david
08e42642b8
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.DevExpressVCL@21 05c56307-c608-d34a-929d-697000501d7a
4720 lines
146 KiB
ObjectPascal
4720 lines
146 KiB
ObjectPascal
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{********************************************************************}
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{ }
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{ Developer Express Visual Component Library }
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{ Express Cross Platform Library graphics classes }
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{ }
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{ Copyright (c) 2000-2007 Developer Express Inc. }
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{ ALL RIGHTS RESERVED }
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{ }
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{ The entire contents of this file is protected by U.S. and }
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{ International Copyright Laws. Unauthorized reproduction, }
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{ reverse-engineering, and distribution of all or any portion of }
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{ the code contained in this file is strictly prohibited and may }
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{ result in severe civil and criminal penalties and will be }
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{ prosecuted to the maximum extent possible under the law. }
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{ }
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{ RESTRICTIONS }
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{ }
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{ THIS SOURCE CODE AND ALL RESULTING INTERMEDIATE FILES }
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{ (DCU, OBJ, DLL, ETC.) ARE CONFIDENTIAL AND PROPRIETARY TRADE }
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{ SECRETS OF DEVELOPER EXPRESS INC. THE REGISTERED DEVELOPER IS }
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{ LICENSED TO DISTRIBUTE THE EXPRESSCROSSPLATFORMLIBRARY AND ALL }
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{ ACCOMPANYING VCL CONTROLS AS PART OF AN EXECUTABLE PROGRAM }
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{ ONLY. }
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{ }
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{ THE SOURCE CODE CONTAINED WITHIN THIS FILE AND ALL RELATED }
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{ FILES OR ANY PORTION OF ITS CONTENTS SHALL AT NO TIME BE }
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{ COPIED, TRANSFERRED, SOLD, DISTRIBUTED, OR OTHERWISE MADE }
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{ AVAILABLE TO OTHER INDIVIDUALS WITHOUT EXPRESS WRITTEN CONSENT }
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{ AND PERMISSION FROM DEVELOPER EXPRESS INC. }
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{ }
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{ CONSULT THE END USER LICENSE AGREEMENT FOR INFORMATION ON }
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{ ADDITIONAL RESTRICTIONS. }
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{ }
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{********************************************************************}
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unit cxGraphics;
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{$I cxVer.inc}
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interface
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uses
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{$IFDEF DELPHI6}
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Types,
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{$ENDIF}
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Windows,
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Classes, SysUtils, Controls, Graphics, CommCtrl, ImgList, cxClasses;
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const
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cxAlignLeft = 1;
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cxAlignRight = 2;
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cxAlignHCenter = 4;
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cxAlignTop = 8;
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cxAlignBottom = 16;
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cxAlignVCenter = 32;
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cxAlignCenter = 36;
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cxSingleLine = 64;
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cxDontClip = 128;
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cxExpandTabs = 256;
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cxShowPrefix = 512;
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cxWordBreak = 1024;
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cxShowEndEllipsis = 2048;
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cxDontPrint = 4096;
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cxShowPathEllipsis = 8192;
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cxDontBreakChars = 16384;
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SystemAlignmentsHorz: array[TAlignment] of Integer = (DT_LEFT, DT_RIGHT, DT_CENTER);
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SystemAlignmentsVert: array[TcxAlignmentVert] of Integer = (DT_TOP, DT_BOTTOM, DT_VCENTER);
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cxAlignmentsHorz: array[TAlignment] of Integer = (cxAlignLeft, cxAlignRight, cxAlignHCenter);
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cxAlignmentsVert: array[TcxAlignmentVert] of Integer = (cxAlignTop, cxAlignBottom, cxAlignVCenter);
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{$IFNDEF DELPHI6}
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clMoneyGreen = TColor($C0DCC0);
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clSkyBlue = TColor($F0CAA6);
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clCream = TColor($F0FBFF);
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clMedGray = TColor($A4A0A0);
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{$ENDIF}
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clcxLightGray = $CFCFCF;
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cxEmptyRect: TRect = (Left: 0; Top: 0; Right: 0; Bottom: 0);
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cxDesignSelectionWidth = 2;
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cxDefaultAlphaValue = 200;
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cxHalfToneBrush: TBrush = nil;
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type
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IcxFontListener = interface
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['{B144DD7E-0B27-439A-B908-FC3ACFE6A2D3}']
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procedure Changed(Sender: TObject; AFont: TFont);
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end;
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TcxBorder = (bLeft, bTop, bRight, bBottom);
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TcxBorders = set of TcxBorder;
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const
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cxBordersAll = [bLeft, bTop, bRight, bBottom];
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type
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TBrushHandle = HBRUSH;
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TPointArray = array of TPoint;
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TRectArray = array of TRect;
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TcxColorPart = -100..100;
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TcxGridLines = (glBoth, glNone, glVertical, glHorizontal);
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PcxViewParams = ^TcxViewParams;
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TcxViewParams = record
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Bitmap: TBitmap;
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Color: TColor;
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Font: TFont;
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TextColor: TColor;
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end;
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{ TcxRegion }
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TcxRegionHandle = HRGN;
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TcxRegionOperation = (roSet, roAdd, roSubtract, roIntersect);
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TcxRegion = class {6}
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private
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FHandle: TcxRegionHandle;
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function GetIsEmpty: Boolean;
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protected
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procedure DestroyHandle;
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public
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constructor Create(AHandle: TcxRegionHandle); overload;
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constructor Create(const ABounds: TRect); overload;
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constructor Create; overload;
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constructor Create(ALeft, ATop, ARight, ABottom: Integer); overload;
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destructor Destroy; override;
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procedure Combine(ARegion: TcxRegion; AOperation: TcxRegionOperation;
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ADestroyRegion: Boolean = True);
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function IsEqual(ARegion: TcxRegion): Boolean; overload;
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function IsEqual(ARegionHandle: TcxRegionHandle): Boolean; overload;
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procedure Offset(DX, DY: Integer);
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function PtInRegion(const Pt: TPoint): Boolean; overload;
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function PtInRegion(X, Y: Integer): Boolean; overload;
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function RectInRegion(const R: TRect): Boolean; overload;
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function RectInRegion(ALeft, ATop, ARight, ABottom: Integer): Boolean; overload;
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property Handle: TcxRegionHandle read FHandle write FHandle;
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property IsEmpty: Boolean read GetIsEmpty;
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end;
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{ TcxCanvas }
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TcxRotationAngle = (ra0, raPlus90, raMinus90, ra180);
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TcxCanvasState = record
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Font: TFont;
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Brush: TBrush;
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Pen: TPen;
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end;
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TcxCanvasStates = array of TcxCanvasState;
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TcxCanvas = class
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private
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FCanvas: TCanvas;
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FSavedDCs: TList;
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FSavedRegions: TList;
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FSavedStates: TcxCanvasStates;
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function GetBrush: TBrush;
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function GetCopyMode: TCopyMode;
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function GetDCOrigin: TPoint;
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function GetFont: TFont;
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function GetHandle: HDC;
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function GetPen: TPen;
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function GetViewportOrg: TPoint;
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function GetWindowOrg: TPoint;
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procedure SetBrush(Value: TBrush);
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procedure SetCopyMode(Value: TCopyMode);
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procedure SetFont(Value: TFont);
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procedure SetPen(Value: TPen);
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procedure SetPixel(X, Y: Integer; Value: TColor);
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procedure SetViewportOrg(const P: TPoint);
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procedure SetWindowOrg(const P: TPoint);
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protected
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procedure SynchronizeObjects(ADC: THandle);
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public
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constructor Create(ACanvas: TCanvas); virtual;
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destructor Destroy; override;
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procedure AlignMultiLineTextRectVertically(var R: TRect; const AText: string;
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AAlignmentVert: TcxAlignmentVert; AWordBreak, AShowPrefix: Boolean;
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AEnabled: Boolean = True; ADontBreakChars: Boolean = False);
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procedure CopyRect(const Dest: TRect; ACanvas: TCanvas; const Source: TRect);
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procedure Draw(X, Y: Integer; Graphic: TGraphic);
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procedure DrawComplexFrame(const R: TRect; ALeftTopColor, ARightBottomColor: TColor;
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ABorders: TcxBorders = [bLeft, bTop, bRight, bBottom]; ABorderWidth: Integer = 1);
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procedure DrawEdge(const R: TRect; ASunken, AOuter: Boolean;
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ABorders: TcxBorders = [bLeft, bTop, bRight, bBottom]);
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procedure DrawFocusRect(const R: TRect);
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procedure DrawGlyph(X, Y: Integer; AGlyph: TBitmap; AEnabled: Boolean = True;
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ABackgroundColor: TColor = clNone{; ATempCanvas: TCanvas = nil});
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procedure DrawImage(Images: TCustomImageList; X, Y, Index: Integer;
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Enabled: Boolean = True);
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procedure DrawTexT(const Text: string; R: TRect; Flags: Integer;
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Enabled: Boolean = True);
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procedure FillRect(const R: TRect; AColor: TColor); overload;
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procedure FillRect(const R: TRect; ABitmap: TBitmap = nil;
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AExcludeRect: Boolean = False); overload;
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procedure FillRect(R: TRect; const AParams: TcxViewParams;
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ABorders: TcxBorders = []; ABorderColor: TColor = clDefault;
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ALineWidth: Integer = 1; AExcludeRect: Boolean = False); overload;
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procedure DrawDesignSelection(ARect: TRect; AWidth: Integer = cxDesignSelectionWidth);
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procedure DrawRegion(ARegion: TcxRegion; AContentColor: TColor = clDefault;
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ABorderColor: TColor = clDefault; ABorderWidth: Integer = 1; ABorderHeight: Integer = 1); overload;
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procedure DrawRegion(ARegion: TcxRegionHandle; AContentColor: TColor = clDefault;
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ABorderColor: TColor = clDefault; ABorderWidth: Integer = 1; ABorderHeight: Integer = 1); overload;
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procedure FillRegion(ARegion: TcxRegion; AColor: TColor = clDefault); overload;
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procedure FillRegion(ARegion: TcxRegionHandle; AColor: TColor = clDefault); overload;
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procedure FlipHorizontally(ABitmap: TBitmap);
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procedure FrameRegion(ARegion: TcxRegion; AColor: TColor = clDefault;
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ABorderWidth: Integer = 1; ABorderHeight: Integer = 1); overload;
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procedure FrameRegion(ARegion: TcxRegionHandle; AColor: TColor = clDefault;
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ABorderWidth: Integer = 1; ABorderHeight: Integer = 1); overload;
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procedure Pie(const R: TRect; const ARadial1, ARadial2: TPoint); overload;
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procedure Pie(const R: TRect; AStartAngle, ASweepAngle: Integer); overload;
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function FontHeight(AFont: TFont): Integer;
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procedure FrameRect(const R: TRect; Color: TColor = clDefault;
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ALineWidth: Integer = 1; ABorders: TcxBorders = cxBordersAll;
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AExcludeFrame: Boolean = False);
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procedure InvertFrame(const R: TRect; ABorderSize: Integer);
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procedure InvertRect(const R: TRect);
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procedure LineTo(X, Y: Integer);
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procedure MoveTo(X, Y: Integer);
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procedure Polygon(const Points: array of TPoint);
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procedure Polyline(const Points: array of TPoint);
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procedure RotateBitmap(ABitmap: TBitmap; ARotationAngle: TcxRotationAngle;
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AFlipVertically: Boolean = False);
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function TextExtent(const Text: string): TSize; overload;
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procedure TextExtent(const Text: string; var R: TRect; Flags: Integer); overload;
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function TextHeight(const Text: string): Integer;
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function TextWidth(const Text: string): Integer;
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procedure TransparentDraw(X, Y: Integer; ABitmap: TBitmap; AAlpha: Byte;
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ABackground: TBitmap = nil);
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procedure RestoreDC;
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procedure SaveDC;
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procedure RestoreClipRegion;
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procedure SaveClipRegion;
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procedure RestoreState;
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procedure SaveState;
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procedure GetParams(var AParams: TcxViewParams);
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procedure SetParams(AParams: TcxViewParams);
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procedure SetBrushColor(Value: TColor);
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procedure SetFontAngle(Value: Integer);
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procedure GetTextStringsBounds(Text: string; R: TRect; Flags: Integer;
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Enabled: Boolean; var ABounds: TRectArray);
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procedure BeginPath;
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procedure EndPath;
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function PathToRegion: TcxRegion;
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procedure WidenPath;
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// clipping
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procedure ExcludeClipRect(const R: TRect);
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procedure IntersectClipRect(const R: TRect);
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function GetClipRegion(AConsiderOrigin: Boolean = True): TcxRegion;
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procedure SetClipRegion(ARegion: TcxRegion; AOperation: TcxRegionOperation;
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ADestroyRegion: Boolean = True; AConsiderOrigin: Boolean = True);
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function RectFullyVisible(const R: TRect): Boolean;
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function RectVisible(const R: TRect): Boolean;
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property Brush: TBrush read GetBrush write SetBrush;
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property Canvas: TCanvas read FCanvas write FCanvas;
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property CopyMode: TCopyMode read GetCopyMode write SetCopyMode;
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property DCOrigin: TPoint read GetDCOrigin;
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property Font: TFont read GetFont write SetFont;
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property Handle: HDC read GetHandle;
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property Pen: TPen read GetPen write SetPen;
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property Pixels[X, Y: Integer]: TColor write SetPixel;
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property ViewportOrg: TPoint read GetViewportOrg write SetViewportOrg;
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property WindowOrg: TPoint read GetWindowOrg write SetWindowOrg;
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end;
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{ TcxScreenCanvas }
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TcxScreenCanvas = class(TcxCanvas)
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public
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constructor Create; reintroduce; virtual;
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destructor Destroy; override;
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end;
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{ TcxCustomBitmap }
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TcxCustomBitmap = class(TBitmap)
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private
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FcxCanvas: TcxCanvas;
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FLockCount: Integer;
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FModified: Boolean;
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function GetClientRect: TRect;
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protected
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procedure Changed(Sender: TObject); override;
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function ChangeLocked: Boolean;
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procedure Initialize(AWidth, AHeight: Integer; APixelFormat: TPixelFormat); virtual;
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procedure Update; virtual;
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public
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constructor Create; override;
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constructor CreateSize(ARect: TRect); overload;
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constructor CreateSize(AWidth, AHeight: Integer); overload;
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constructor CreateSize(AWidth, AHeight: Integer; APixelFormat: TPixelFormat); overload; virtual;
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destructor Destroy; override;
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procedure BeginUpdate;
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procedure EndUpdate(AForceUpdate: Boolean = True);
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procedure Rotate(ARotationAngle: TcxRotationAngle; AFlipVertically: Boolean = False);
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procedure SetSize(AWidth, AHeight: Integer); {$IFDEF DELPHI10}override;{$ELSE}virtual;{$ENDIF}
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property ClientRect: TRect read GetClientRect;
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property cxCanvas: TcxCanvas read FcxCanvas;
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end;
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{ TcxBitmap }
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TRGBColors = array of TRGBQuad;
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TcxImageDrawMode = (idmNormal, idmDisabled, idmFaded, idmGrayScale, idmDingy, idmShadowed);
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TcxBitmapTransformationMode = (btmDingy, btmDirty, btmGrayScale, btmSetOpaque, btmMakeMask, btmFade, btmDisable, btmCorrectBlend, btmHatch, btmClear);
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TcxBitmapTransformationProc = procedure(var AColor: TRGBQuad) of object;
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TcxDrawImageProc = function (ACanvas: TCanvas; AImages: TCustomImageList; AImageIndex: Integer; AGlyph: TBitmap; ARect: TRect; ADrawMode: TcxImageDrawMode): Boolean;
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TcxColorTransitionMap = record
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RedScale: Single;
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GreenScale: Single;
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BlueScale: Single;
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SrcAlpha: Byte;
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SrcConstantAlpha: Byte;
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end;
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TcxHatchData = record
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Color1: TRGBQuad;
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Alpha1: Byte;
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Color2: TRGBQuad;
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Alpha2: Byte;
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Step: Byte;
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end;
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TcxColorList = class(TList)
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public
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function Add(AColor: TColor): Integer;
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end;
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TcxBitmap = class(TcxCustomBitmap)
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private
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FBitmapInfo: TBitmapInfo;
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FDC: HDC;
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FTransparentBkColor: TRGBQuad;
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FTransparentPixels: TcxColorList;
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FCurrentColorIndex: TPoint;
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FHatchData: TcxHatchData;
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function GetIsAlphaUsed: Boolean;
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procedure CorrectBlend(var AColor: TRGBQuad);
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procedure ClearColor(var AColor: TRGBQuad);
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procedure Dingy(var AColor: TRGBQuad);
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procedure Dirty(var AColor: TRGBQuad);
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procedure Disable(var AColor: TRGBQuad);
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procedure Fade(var AColor: TRGBQuad);
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procedure GrayScale(var AColor: TRGBQuad);
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procedure Hatch(var AColor: TRGBQuad);
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procedure MakeMask(var AColor: TRGBQuad);
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procedure SetOpaque(var AColor: TRGBQuad);
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procedure Scale(var AColor: TRGBQuad; const AColorMap: TcxColorTransitionMap);
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procedure UpdateBitmapInfo;
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function IsColorTransparent(const AColor: TRGBQuad): Boolean;
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protected
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procedure Initialize(AWidth, AHeight: Integer; APixelFormat: TPixelFormat); override;
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procedure Update; override;
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property HatchData: TcxHatchData read FHatchData write FHatchData;
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property TransparentBkColor: TRGBQuad read FTransparentBkColor write FTransparentBkColor;
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property TransparentPixels: TcxColorList read FTransparentPixels;
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public
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constructor CreateSize(AWidth, AHeight: Integer; APixelFormat: TPixelFormat); overload; override;
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constructor CreateSize(AWidth, AHeight: Integer; ATransparentBkColor: TRGBQuad); overload;
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destructor Destroy; override;
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procedure GetBitmapColors(out AColors: TRGBColors);
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procedure SetBitmapColors(const AColors: TRGBColors);
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procedure AlphaBlend(ABitmap: TcxBitmap; const ARect: TRect; ASmoothImage: Boolean; AConstantAlpha: Byte = $FF);
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procedure Clear;
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procedure CopyBitmap(ABitmap: TBitmap; ACopyMode: DWORD = SRCCOPY); overload;
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procedure CopyBitmap(ABitmap: TBitmap; const ADestRect: TRect; const ASrcTopLeft: TPoint; ACopyMode: DWORD = SRCCOPY); overload;
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procedure DrawHatch(const AHatchData: TcxHatchData); overload;
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procedure DrawHatch(AColor1, AColor2: TColor; AStep: Byte; AAlpha1: Byte = $FF; AAlpha2: Byte = $FF); overload;
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procedure DrawShadow(AMaskBitmap: TcxBitmap; AShadowSize: Integer; AShadowColor: TColor; AInflateSize: Boolean = False);
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procedure Filter(AMaskBitmap: TcxBitmap);
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procedure Invert;
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procedure MakeOpaque;
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procedure RecoverAlphaChannel(ATransparentColor: TColor);
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procedure SetSize(AWidth, AHeight: Integer); override;
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procedure Shade(AMaskBitmap: TcxBitmap);
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procedure TransformBitmap(AMode: TcxBitmapTransformationMode);
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property IsAlphaUsed: Boolean read GetIsAlphaUsed;
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end;
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TcxImageList = class(TDragImageList)
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private
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FAlphaBlending: Boolean;
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FLockCount: Integer;
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function GetImageHandle(AImage: TBitmap): Integer;
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class function GetPixelFormat(AHandle: HIMAGELIST): Integer;
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protected
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function ChangeLocked: Boolean;
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procedure Change; override;
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procedure DoDraw(Index: Integer; Canvas: TCanvas; X, Y: Integer;
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Style: Cardinal; Enabled: Boolean = True); override;
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procedure DoDrawEx(AIndex: Integer; ACanvas: TCanvas;
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const ARect: TRect; AStyle: Cardinal; AStretch, ASmoothResize, AEnabled: Boolean);
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procedure Initialize; override;
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public
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function Add(AImage, AMask: TBitmap): Integer;
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procedure AddImages(AImageList: TCustomImageList);
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function AddMasked(AImage: TBitmap; AMaskColor: TColor): Integer;
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procedure Assign(Source: TPersistent); override;
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procedure CopyImages(AImageList: TCustomImageList; AStartIndex: Integer = 0; AEndIndex: Integer = -1);
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procedure Insert(AIndex: Integer; AImage, AMask: TBitmap);
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procedure InsertMasked(AIndex: Integer; AImage: TBitmap; AMaskColor: TColor);
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procedure Move(ACurIndex, ANewIndex: Integer);
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function Replace(AIndex: Integer; AImage, AMask: TBitmap): Boolean;
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procedure ReplaceMasked(AIndex: Integer; ANewImage: TBitmap; AMaskColor: TColor);
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procedure BeginUpdate;
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procedure EndUpdate(AForceUpdate: Boolean = True);
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{$IFNDEF DELPHI6}
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procedure Draw(ACanvas: TCanvas; X, Y, AIndex: Integer;
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ADrawingStyle: TDrawingStyle; AImageType: TImageType;
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AEnabled: Boolean = True); overload;
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{$ENDIF}
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procedure Draw(ACanvas: TCanvas; const ARect: TRect; AIndex: Integer;
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AStretch: Boolean = True; ASmoothResize: Boolean = False; AEnabled: Boolean = True); overload;
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procedure GetImageInfo(AIndex: Integer; AImage, AMask: TBitmap); overload;
|
|
procedure GetImage(AIndex: Integer; AImage: TBitmap);
|
|
procedure GetMask(AIndex: Integer; AMask: TBitmap);
|
|
|
|
class procedure GetImageInfo(AHandle: HIMAGELIST; AIndex: Integer; AImage, AMask: TBitmap); overload;
|
|
property AlphaBlending: Boolean read FAlphaBlending write FAlphaBlending;
|
|
published
|
|
property BlendColor;
|
|
property BkColor;
|
|
property DrawingStyle;
|
|
property Height;
|
|
property ImageType;
|
|
property ShareImages;
|
|
property Width;
|
|
property OnChange;
|
|
end;
|
|
|
|
{ TcxBrushCache }
|
|
|
|
TcxBrushData = record
|
|
Brush: TBrush;
|
|
Color: TColor;
|
|
RefCount: Integer;
|
|
end;
|
|
|
|
TcxBrushesData = array of TcxBrushData;
|
|
|
|
EBrushCache = class(Exception);
|
|
|
|
TcxBrushCache = class
|
|
private
|
|
FCapacity: Integer;
|
|
FCount: Integer;
|
|
FData: TcxBrushesData;
|
|
FDeletedCount: Integer;
|
|
FLockRef: Integer;
|
|
protected
|
|
function Add(AColor: TColor): TBrush;
|
|
function AddItemAt(AIndex: Integer; AColor: TColor): TBrush;
|
|
procedure CacheCheck(Value: Boolean; const AMessage: string);
|
|
procedure Delete(AIndex: Integer);
|
|
function IndexOf(AColor: TColor; out AIndex: Integer): Boolean;
|
|
procedure InitItem(var AItem: TcxBrushData; AColor: TColor);
|
|
function IsSystemBrush(ABrush: TBrush): Boolean;
|
|
function FindNearestItem(AColor: TColor): Integer;
|
|
procedure Move(ASrc, ADst, ACount: Integer);
|
|
procedure Pack;
|
|
procedure Recreate;
|
|
procedure Release(AIndex: Integer);
|
|
public
|
|
destructor Destroy; override;
|
|
procedure BeginUpdate;
|
|
procedure EndUpdate;
|
|
procedure ReleaseBrush(var ABrush: TBrush);
|
|
procedure SetBrushColor(var ABrush: TBrush; AColor: TColor);
|
|
end;
|
|
|
|
const
|
|
DisableMap: TcxColorTransitionMap = (RedScale: 0.0729; GreenScale: 0.7146; BlueScale: 0.2125; SrcAlpha: 105; SrcConstantAlpha: 151);
|
|
FadeMap: TcxColorTransitionMap = (RedScale: 0.299; GreenScale: 0.587; BlueScale: 0.114; SrcAlpha: 192; SrcConstantAlpha: 64);
|
|
GrayMap: TcxColorTransitionMap = (RedScale: 0.299; GreenScale: 0.587; BlueScale: 0.114; SrcAlpha: $FF; SrcConstantAlpha: $FF);
|
|
|
|
type
|
|
TcxColorInfo = record
|
|
Name: string;
|
|
Color: TColor;
|
|
end;
|
|
|
|
const
|
|
cxColorsByName: array[0..168] of TcxColorInfo = (
|
|
(Name: 'aliceblue'; Color: $00FFF8F0),
|
|
(Name: 'antiquewhite'; Color: $00D7EBFA),
|
|
(Name: 'aqua'; Color: clAqua),
|
|
(Name: 'aquamarine'; Color: $007FD4FF),
|
|
(Name: 'azure'; Color: $00FFFFF0),
|
|
(Name: 'beige'; Color: $00DCF5F5),
|
|
(Name: 'bisque'; Color: $00C4E4FF),
|
|
(Name: 'black'; Color: clBlack),
|
|
(Name: 'blanchedalmond'; Color: $00CDFFFF),
|
|
(Name: 'blue'; Color: clBlue),
|
|
(Name: 'blueviolet'; Color: $00E22B8A),
|
|
(Name: 'brown'; Color: $002A2AA5),
|
|
(Name: 'burlywood'; Color: $0087B8DE),
|
|
(Name: 'cadetblue'; Color: $00A09E5F),
|
|
(Name: 'chartreuse'; Color: $0000FF7F),
|
|
(Name: 'chocolate'; Color: $001E69D2),
|
|
(Name: 'coral'; Color: $00507FFF),
|
|
(Name: 'cornflowerblue'; Color: $00ED9564),
|
|
(Name: 'cornsilk'; Color: $00DCF8FF),
|
|
(Name: 'crimson'; Color: $003C14DC),
|
|
(Name: 'cyan'; Color: $00FFFF00),
|
|
(Name: 'darkblue'; Color: $008B0000),
|
|
(Name: 'darkcyan'; Color: $008B8B00),
|
|
(Name: 'darkgoldenrod'; Color: $000B86B8),
|
|
(Name: 'darkgray'; Color: $00A9A9A9),
|
|
(Name: 'darkgreen'; Color: $00006400),
|
|
(Name: 'darkkhaki'; Color: $006BB7BD),
|
|
(Name: 'darkmagenta'; Color: $008B008B),
|
|
(Name: 'darkolivegreen'; Color: $002F6B55),
|
|
(Name: 'darkorange'; Color: $00008CFF),
|
|
(Name: 'darkorchid'; Color: $00CC3299),
|
|
(Name: 'darkred'; Color: $0000008B),
|
|
(Name: 'darksalmon'; Color: $007A96E9),
|
|
(Name: 'darkseagreen'; Color: $008FBC8F),
|
|
(Name: 'darkslateblue'; Color: $008B3D48),
|
|
(Name: 'darkslategray'; Color: $004F4F2F),
|
|
(Name: 'darkturquoise'; Color: $00D1CE00),
|
|
(Name: 'darkviolet'; Color: $00D30094),
|
|
(Name: 'deeppink'; Color: $009314FF),
|
|
(Name: 'deepskyblue'; Color: $00FFBF00),
|
|
(Name: 'dimgray'; Color: $00696969),
|
|
(Name: 'dodgerblue'; Color: $00FF901E),
|
|
(Name: 'firebrick'; Color: $002222B2),
|
|
(Name: 'floralwhite'; Color: $00F0FAFF),
|
|
(Name: 'forestgreen'; Color: $00228B22),
|
|
(Name: 'fuchsia'; Color: $00FF00FF),
|
|
(Name: 'gainsboro'; Color: $00DCDCDC),
|
|
(Name: 'ghostwhite'; Color: $00FFF8F8),
|
|
(Name: 'gold'; Color: $0000D7FF),
|
|
(Name: 'goldenrod'; Color: $0020A5DA),
|
|
(Name: 'gray'; Color: clGray),
|
|
(Name: 'green'; Color: clGreen),
|
|
(Name: 'greenyellow'; Color: $002FFFAD),
|
|
(Name: 'honeydew'; Color: $00F0FFF0),
|
|
(Name: 'hotpink'; Color: $00B469FF),
|
|
(Name: 'indianred'; Color: $005C5CCD),
|
|
(Name: 'indigo'; Color: $0082004B),
|
|
(Name: 'ivory'; Color: $00F0F0FF),
|
|
(Name: 'khaki'; Color: $008CE6F0),
|
|
(Name: 'lavender'; Color: $00FAE6E6),
|
|
(Name: 'lavenderblush'; Color: $00F5F0FF),
|
|
(Name: 'lawngreen'; Color: $0000FC7C),
|
|
(Name: 'lemonchiffon'; Color: $00CDFAFF),
|
|
(Name: 'lightblue'; Color: $00E6D8AD),
|
|
(Name: 'lightcoral'; Color: $008080F0),
|
|
(Name: 'lightcyan'; Color: $00FFFFE0),
|
|
(Name: 'lightgoldenrodyellow'; Color: $00D2FAFA),
|
|
(Name: 'lightgreen'; Color: $0090EE90),
|
|
(Name: 'lightgrey'; Color: $00D3D3D3),
|
|
(Name: 'lightpink'; Color: $00C1B6FF),
|
|
(Name: 'lightsalmon'; Color: $007AA0FF),
|
|
(Name: 'lightseagreen'; Color: $00AAB220),
|
|
(Name: 'lightskyblue'; Color: $00FACE87),
|
|
(Name: 'lightslategray'; Color: $00998877),
|
|
(Name: 'lightsteelblue'; Color: $00DEC4B0),
|
|
(Name: 'lightyellow'; Color: $00E0FFFF),
|
|
(Name: 'lime'; Color: clLime),
|
|
(Name: 'limegreen'; Color: $0032CD32),
|
|
(Name: 'linen'; Color: $00E6F0FA),
|
|
(Name: 'magenta'; Color: $00FF00FF),
|
|
(Name: 'maroon'; Color: clMaroon),
|
|
(Name: 'mediumaquamarine'; Color: $00AACD66),
|
|
(Name: 'mediumblue'; Color: $00CD0000),
|
|
(Name: 'mediumorchid'; Color: $00D355BA),
|
|
(Name: 'mediumpurple'; Color: $00DB7093),
|
|
(Name: 'mediumseagreen'; Color: $0071B33C),
|
|
(Name: 'mediumpurple'; Color: $00DB7093),
|
|
(Name: 'mediumslateblue'; Color: $00EE687B),
|
|
(Name: 'mediumspringgreen'; Color: $009AFA00),
|
|
(Name: 'mediumturquoise'; Color: $00CCD148),
|
|
(Name: 'mediumvioletred'; Color: $008515C7),
|
|
(Name: 'midnightblue'; Color: $00701919),
|
|
(Name: 'mintcream'; Color: $00FAFFF5),
|
|
(Name: 'mistyrose'; Color: $00E1E4FF),
|
|
(Name: 'moccasin'; Color: $00B5E4FF),
|
|
(Name: 'navajowhite'; Color: $00ADDEFF),
|
|
(Name: 'navy'; Color: clNavy),
|
|
(Name: 'oldlace'; Color: $00E6F5FD),
|
|
(Name: 'olive'; Color: $00008080),
|
|
(Name: 'olivedrab'; Color: $00238E6B),
|
|
(Name: 'orange'; Color: $0000A5FF),
|
|
(Name: 'orangered'; Color: $000045FF),
|
|
(Name: 'orchid'; Color: $00D670DA),
|
|
(Name: 'palegoldenrod'; Color: $00AAE8EE),
|
|
(Name: 'palegreen'; Color: $0098FB98),
|
|
(Name: 'paleturquoise'; Color: $00EEEEAF),
|
|
(Name: 'palevioletred'; Color: $009370DB),
|
|
(Name: 'papayawhip'; Color: $00D5EFFF),
|
|
(Name: 'peachpuff'; Color: $00BDDBFF),
|
|
(Name: 'peru'; Color: $003F85CD),
|
|
(Name: 'pink'; Color: $00CBC0FF),
|
|
(Name: 'plum'; Color: $00DDA0DD),
|
|
(Name: 'powderblue'; Color: $00E6E0B0),
|
|
(Name: 'purple'; Color: $00800080),
|
|
(Name: 'red'; Color: clRed),
|
|
(Name: 'rosybrown'; Color: $008F8FBC),
|
|
(Name: 'royalblue'; Color: $00E16941),
|
|
(Name: 'saddlebrown'; Color: $0013458B),
|
|
(Name: 'salmon'; Color: $007280FA),
|
|
(Name: 'sandybrown'; Color: $0060A4F4),
|
|
(Name: 'seagreen'; Color: $00578B2E),
|
|
(Name: 'seashell'; Color: $00EEF5FF),
|
|
(Name: 'sienna'; Color: $002D52A0),
|
|
(Name: 'silver'; Color: $00C0C0C0),
|
|
(Name: 'skyblue'; Color: $00EBCE87),
|
|
(Name: 'slateblue'; Color: $00CD5A6A),
|
|
(Name: 'slategray'; Color: $00908070),
|
|
(Name: 'snow'; Color: $00FAFAFF),
|
|
(Name: 'springgreen'; Color: $007FFF00),
|
|
(Name: 'steelblue'; Color: $00B48246),
|
|
(Name: 'tan'; Color: $008CB4D2),
|
|
(Name: 'teal'; Color: clTeal),
|
|
(Name: 'thistle'; Color: $00D8BFD8),
|
|
(Name: 'tomato'; Color: $004763FD),
|
|
(Name: 'turquoise'; Color: $00D0E040),
|
|
(Name: 'violet'; Color: $00EE82EE),
|
|
(Name: 'wheat'; Color: $00B3DEF5),
|
|
(Name: 'white'; Color: clWhite),
|
|
(Name: 'whitesmoke'; Color: $00F5F5F5),
|
|
(Name: 'yellow'; Color: clYellow),
|
|
(Name: 'yellowgreen'; Color: $0032CD9A),
|
|
|
|
(Name: 'activeborder'; Color: clActiveBorder),
|
|
(Name: 'activecaption'; Color: clActiveCaption),
|
|
(Name: 'appworkspace'; Color: clAppWorkSpace),
|
|
(Name: 'background'; Color: clBackground),
|
|
(Name: 'buttonface'; Color: clBtnFace),
|
|
(Name: 'buttonhighlight'; Color: clBtnHighlight),
|
|
(Name: 'buttonshadow'; Color: clBtnShadow),
|
|
(Name: 'buttontext'; Color: clBtnText),
|
|
(Name: 'captiontext'; Color: clCaptionText),
|
|
(Name: 'graytext'; Color: clGrayText),
|
|
(Name: 'highlight'; Color: clHighlight),
|
|
(Name: 'highlighttext'; Color: clHighlightText),
|
|
(Name: 'inactiveborder'; Color: clInactiveBorder),
|
|
(Name: 'inactivecaption'; Color: clInactiveCaption),
|
|
(Name: 'inactivecaptiontext'; Color: clInactiveCaptionText),
|
|
(Name: 'infobackground'; Color: clInfoBk),
|
|
(Name: 'infotext'; Color: clInfoText),
|
|
(Name: 'menu'; Color: clMenu),
|
|
(Name: 'menutext'; Color: clMenuText),
|
|
(Name: 'scrollbar'; Color: clScrollBar),
|
|
(Name: 'threeddarkshadow'; Color: cl3DDkShadow),
|
|
(Name: 'threedface'; Color: clBtnFace),
|
|
(Name: 'threedhighlight'; Color: clHighlightText),
|
|
(Name: 'threedlightshadow'; Color: cl3DLight),
|
|
(Name: 'threedshadow'; Color: clBtnShadow),
|
|
(Name: 'window'; Color: clWindow),
|
|
(Name: 'windowframe'; Color: clWindowFrame),
|
|
(Name: 'windowtext'; Color: clWindowText)
|
|
);
|
|
|
|
var
|
|
CustomDrawImageProc: TcxDrawImageProc = nil;
|
|
|
|
function cxFlagsToDTFlags(Flags: Integer): Integer;
|
|
|
|
procedure cxSetImageList(const AValue: TCustomImageList; var AFieldValue: TCustomImageList; const AChangeLink: TChangeLink; ANotifyComponent: TComponent);
|
|
procedure ExtendRect(var Rect: TRect; const AExtension: TRect);
|
|
function IsGlyphAssigned(AGlyph: TBitmap): Boolean;
|
|
function IsImageAssigned(AImageList: TCustomImageList; AImageIndex: Integer): Boolean;
|
|
|
|
function GetRealColor(AColor: TColor): TColor;
|
|
|
|
// light colors
|
|
function GetLightColor(ABtnFaceColorPart, AHighlightColorPart, AWindowColorPart: TcxColorPart): TColor;
|
|
function GetLightBtnFaceColor: TColor;
|
|
function GetLightDownedColor: TColor;
|
|
function GetLightDownedSelColor: TColor;
|
|
function GetLightSelColor: TColor;
|
|
|
|
function GetBitmapBits(ABitmap: TBitmap; ATopDownDIB: Boolean): TRGBColors;
|
|
procedure SetBitmapBits(ABitmap: TBitmap; var AColors: TRGBColors;
|
|
ATopDownDIB: Boolean);
|
|
function SystemAlphaBlend(ADestDC, ASrcDC: HDC; const ADestRect, ASrcRect: TRect; AConstantAlpha: Byte = $FF): Boolean;
|
|
|
|
function cxColorByName(const AText: string; var AColor: TColor): Boolean;
|
|
function cxNameByColor(AColor: TColor; var AText: string): Boolean;
|
|
function cxColorToRGBQuad(AColor: TColor; AReserved: Byte = 0): TRGBQuad;
|
|
|
|
procedure cxAlphaBlend(ADestBitmap, ASrcBitmap: TBitmap; const ADestRect, ASrcRect: TRect; ASmoothImage: Boolean = False; AConstantAlpha: Byte = $FF); overload;
|
|
procedure cxAlphaBlend(ADestDC: HDC; ASrcBitmap: TBitmap; const ADestRect, ASrcRect: TRect; ASmoothImage: Boolean = False; AConstantAlpha: Byte = $FF); overload;
|
|
procedure cxAlphaBlend(ADestDC, ASrcDC: HDC; const ADestRect, ASrcRect: TRect; ASmoothImage: Boolean = False; AConstantAlpha: Byte = $FF); overload;
|
|
procedure cxBitBlt(ADestDC, ASrcDC: HDC; const ADestRect: TRect; const ASrcTopLeft: TPoint; ROP: DWORD);
|
|
//procedure cxBitmapToTrueColorBitmap(ABitmap: TBitmap); -> cxMakeTrueColorBitmap
|
|
procedure cxBlendFunction(const ASource: TRGBQuad; var ADest: TRGBQuad; ASourceConstantAlpha: Byte);
|
|
function cxCreateBitmap(const ASize: TSize; AFormat: TPixelFormat = pf24bit): TBitmap; overload;
|
|
function cxCreateBitmap(const ARect: TRect; AFormat: TPixelFormat = pf24bit): TBitmap; overload;
|
|
function cxCreateBitmap(AWidth, AHeight: Integer; AFormat: TPixelFormat = pf24bit): TBitmap; overload;
|
|
function cxCreateTrueColorBitmap(const ASize: TSize): TBitmap; overload;
|
|
function cxCreateTrueColorBitmap(AWidth, AHeight: Integer): TBitmap; overload;
|
|
function cxCreateTrueColorBitmapHandle(AWidth, AHeight: Integer; ABPP: Integer = 32): HBitmap;
|
|
procedure cxDrawDesignRect(ACanvas: TcxCanvas; const ARect: TRect; ASelected: Boolean);
|
|
procedure cxDrawImage(ADC: THandle; AGlyphRect, ABackgroundRect: TRect; AGlyph: TBitmap;
|
|
AImages: TCustomImageList; AImageIndex: Integer; ADrawMode: TcxImageDrawMode;
|
|
ASmoothImage: Boolean = False; ABrush: THandle = 0;
|
|
ATransparentColor: TColor = clNone; AUseLeftBottomPixelAsTransparent: Boolean = True);
|
|
procedure cxDrawImageList(AImageListHandle: HIMAGELIST; AImageIndex: Integer;
|
|
ADC: HDC; APoint: TPoint; ADrawingStyle: TDrawingStyle; AImageType: TImageType);
|
|
procedure cxDrawHatch(ADC: HDC; const ARect: TRect; AColor1, AColor2: TColor; AStep: Byte; AAlpha1: Byte = $FF; AAlpha2: Byte = $FF);
|
|
procedure cxSmoothResizeBitmap(ASource, ADestination: TBitmap; AForceUseLanczos3Filter: Boolean = False);
|
|
|
|
procedure cxMakeTrueColorBitmap(ASourceBitmap, ATrueColorBitmap: TBitmap);
|
|
procedure cxMakeMaskBitmap(ASourceBitmap, AMaskBitmap: TBitmap);
|
|
|
|
{!!! TODO: adapt to .net}
|
|
// mouse cursor size
|
|
function cxGetCursorSize: TSize;
|
|
|
|
// image helper routines
|
|
procedure cxAlphaBlend(ASource: TBitmap; ARect: TRect; const ASelColor: TColor; Alpha: Byte = 170); overload;
|
|
procedure cxAlphaBlend(ADest, ABkSource, ASource: TBitmap; Alpha: Byte = cxDefaultAlphaValue); overload;
|
|
procedure cxApplyViewParams(ACanvas: TcxCanvas; const AViewParams: TcxViewParams);
|
|
procedure cxCopyImage(ASource, ADest: TBitmap; const ASrcOffset, ADstOffset: TPoint; const ARect: TRect); overload;
|
|
procedure cxCopyImage(ASource, ADest: TCanvas; const ASrcOffset, ADstOffset: TPoint; const ARect: TRect); overload;
|
|
procedure cxDrawArrows(ACanvas: TCanvas; const ARect: TRect;
|
|
ASide: TcxBorder; AColor: TColor; APenColor: TColor = clDefault);
|
|
procedure cxFillHalfToneRect(Canvas: TCanvas; const ARect: TRect; ABkColor, AColor: TColor);
|
|
procedure cxSetCanvasOrg(ACanvas: TCanvas; var AOrg: TRect);
|
|
|
|
function cxGetTextExtentPoint32(ADC: THandle; const AText: string; out ASize: TSize; ACharCount: Integer = -1): Boolean;
|
|
procedure cxGetTextLines(const AText: string; ACanvas: TcxCanvas; const ARect: TRect; ALines: TStrings);
|
|
function cxDrawText(ADC: THandle; const AText: string; var ARect: TRect;
|
|
AFormat: UINT; ACharCount: Integer = - 1): Integer;
|
|
function cxExtTextOut(ADC: THandle; const AText: string; const APoint: TPoint;
|
|
const ARect: TRect; AOptions: UINT; ACharCount: Integer = -1): Boolean; overload;
|
|
function cxExtTextOut(ADC: THandle; const AText: string; const APoint: TPoint;
|
|
AOptions: UINT; ACharCount: Integer = -1): Boolean; overload;
|
|
procedure cxInvalidateRect(AHandle: THandle; const ARect: TRect; AEraseBackground: Boolean = True); overload;
|
|
procedure cxInvalidateRect(AHandle: THandle; AEraseBackground: Boolean = True); overload;
|
|
|
|
function cxTextHeight(AFont: TFont; const S: string = 'Wg'; AFontSize: Integer = 0): Integer;
|
|
function cxTextWidth(AFont: TFont; const S: string; AFontSize: Integer = 0): Integer;
|
|
function cxTextExtent(AFont: TFont; const S: string; AFontSize: Integer = 0): TSize;
|
|
function cxTextSize(ADC: THandle; const AText: string): TSize;
|
|
function cxGetTextRect(ADC: THandle; const AText: string; ARowCount: Integer;
|
|
AReturnMaxRectHeight: Boolean = False): TRect; overload;
|
|
function cxGetTextRect(AFont: TFont; const AText: string; ARowCount: Integer): TRect; overload;
|
|
function cxGetScreenPixelsPerInch(AHorizontal: Boolean = False): Integer;
|
|
|
|
function cxGetBitmapData(ABitmapHandle: HBITMAP; out ABitmapData: Windows.TBitmap): Boolean;
|
|
function cxGetBrushData(ABrushHandle: HBRUSH; out ALogBrush: TLogBrush): Boolean; overload;
|
|
function cxGetBrushData(ABrushHandle: HBRUSH): TLogBrush; overload;
|
|
function cxGetFontData(AFontHandle: HFONT; out ALogFont: TLogFont): Boolean;
|
|
function cxGetPenData(APenHandle: HPEN; out ALogPen: TLogPen): Boolean;
|
|
|
|
function cxGetWritingDirection(AFontCharset: TFontCharset; const AText: string): TCanvasOrientation;
|
|
procedure cxDrawThemeParentBackground(AControl: TWinControl; ACanvas: TcxCanvas; const ARect: TRect); overload;
|
|
procedure cxDrawThemeParentBackground(AControl: TWinControl; ACanvas: TCanvas; const ARect: TRect); overload;
|
|
procedure cxDrawTransparentControlBackground(AControl: TWinControl;
|
|
ACanvas: TcxCanvas; ARect: TRect; APaintParentWithChildren: Boolean = True); overload;
|
|
procedure cxDrawTransparentControlBackground(AControl: TWinControl;
|
|
ACanvas: TCanvas; const ARect: TRect; APaintParentWithChildren: Boolean = True); overload;
|
|
function cxScreenCanvas: TcxScreenCanvas;
|
|
|
|
implementation
|
|
|
|
uses
|
|
Messages, Math, Menus, cxControls, cxGeometry, dxUxTheme, dxOffice11;
|
|
|
|
type
|
|
TCanvasAccess = class(TCanvas);
|
|
TBitmapAccess = class(TBitmap);
|
|
|
|
TContributor = record
|
|
Pixel: Integer;
|
|
Weight: Integer;
|
|
end;
|
|
TContributorArray = array of TContributor;
|
|
|
|
TContributors = record
|
|
Count: Integer;
|
|
Contributors: TContributorArray;
|
|
end;
|
|
TContributorList = array of TContributors;
|
|
|
|
const
|
|
{!!! TODO: adapt to .net}
|
|
BaseRgns: array[0..3, 0..6, 0..1] of Integer =
|
|
(((0, -1), (-5, -6),(-2, -6), (-2, -9), (2, -9), (2, -6), (5, -6)),
|
|
((0, 0), (5, 5), (2, 5), (2, 8), (-2, 8), (-2, 5), (-5, 5)),
|
|
((-1, 0), (-6, -5), (-6, -2), (-9, -2), (-9, 2), (-6, 2), (-6, 5)),
|
|
((0, 0), (5, 5), (5, 2), (8, 2), (8, -2), (5, -2), (5, -5)));
|
|
DefaultBlendFunction: TBlendFunction =
|
|
(BlendOp: AC_SRC_OVER;
|
|
BlendFlags: 0;
|
|
SourceConstantAlpha: cxDefaultAlphaValue;
|
|
AlphaFormat: $0);
|
|
|
|
var
|
|
VCLAlphaBlend: function(DC: LongWord; p2, p3, p4, p5: Integer; DC6: LongWord;
|
|
p7, p8, p9, p10: Integer; p11: TBlendFunction): BOOL; stdcall;
|
|
ScreenCanvas: TcxScreenCanvas = nil;
|
|
DrawBitmap, ImageBitmap, MaskBitmap: TcxBitmap;
|
|
|
|
procedure cxBitmapInit(var ABitmap: TcxBitmap; AWidth, AHeight: Integer);
|
|
begin
|
|
if ABitmap = nil then
|
|
ABitmap := TcxBitmap.CreateSize(AWidth, AHeight)
|
|
else
|
|
begin
|
|
ABitmap.TransparentPixels.Clear;
|
|
ABitmap.SetSize(AWidth, AHeight);
|
|
end;
|
|
end;
|
|
|
|
function GetDrawBitmap(AWidth, AHeight: Integer): TcxBitmap;
|
|
begin
|
|
cxBitmapInit(DrawBitmap, AWidth, AHeight);
|
|
Result := DrawBitmap;
|
|
end;
|
|
|
|
function GetImageBitmap(AWidth, AHeight: Integer): TcxBitmap;
|
|
begin
|
|
cxBitmapInit(ImageBitmap, AWidth, AHeight);
|
|
Result := ImageBitmap;
|
|
end;
|
|
|
|
function GetMaskBitmap(AWidth, AHeight: Integer): TcxBitmap;
|
|
begin
|
|
cxBitmapInit(MaskBitmap, AWidth, AHeight);
|
|
Result := MaskBitmap;
|
|
end;
|
|
|
|
function cxFlagsToDTFlags(Flags: Integer): Integer;
|
|
begin
|
|
Result := DT_NOPREFIX;
|
|
if cxAlignLeft and Flags <> 0 then
|
|
Result := Result or DT_LEFT;
|
|
if cxAlignRight and Flags <> 0 then
|
|
Result := Result or DT_RIGHT;
|
|
if cxAlignHCenter and Flags <> 0 then
|
|
Result := Result or DT_CENTER;
|
|
if cxAlignTop and Flags <> 0 then
|
|
Result := Result or DT_TOP;
|
|
if cxAlignBottom and Flags <> 0 then
|
|
Result := Result or DT_BOTTOM;
|
|
if cxAlignVCenter and Flags <> 0 then
|
|
Result := Result or DT_VCENTER;
|
|
if cxSingleLine and Flags <> 0 then
|
|
Result := Result or DT_SINGLELINE;
|
|
if cxDontClip and Flags <> 0 then
|
|
Result := Result or DT_NOCLIP;
|
|
if cxExpandTabs and Flags <> 0 then
|
|
Result := Result or DT_EXPANDTABS;
|
|
if cxShowPrefix and Flags <> 0 then
|
|
Result := Result and not DT_NOPREFIX;
|
|
if cxWordBreak and Flags <> 0 then
|
|
begin
|
|
Result := Result or DT_WORDBREAK;
|
|
if cxDontBreakChars and Flags = 0 then
|
|
Result := Result or DT_EDITCONTROL;
|
|
end;
|
|
if cxShowEndEllipsis and Flags <> 0 then
|
|
Result := Result or DT_END_ELLIPSIS;
|
|
if cxDontPrint and Flags <> 0 then
|
|
Result := Result or DT_CALCRECT;
|
|
if cxShowPathEllipsis and Flags <> 0 then
|
|
Result := Result or DT_PATH_ELLIPSIS;
|
|
end;
|
|
|
|
procedure cxSetImageList(const AValue: TCustomImageList; var AFieldValue: TCustomImageList; const AChangeLink: TChangeLink; ANotifyComponent: TComponent);
|
|
begin
|
|
if AValue <> AFieldValue then
|
|
begin
|
|
if AFieldValue <> nil then
|
|
begin
|
|
AFieldValue.RemoveFreeNotification(ANotifyComponent);
|
|
if AChangeLink <> nil then
|
|
AFieldValue.UnRegisterChanges(AChangeLink);
|
|
end;
|
|
AFieldValue := AValue;
|
|
if AValue <> nil then
|
|
begin
|
|
if AChangeLink <> nil then
|
|
AValue.RegisterChanges(AChangeLink);
|
|
AValue.FreeNotification(ANotifyComponent);
|
|
end;
|
|
if AChangeLink <> nil then
|
|
AChangeLink.Change;
|
|
end;
|
|
end;
|
|
|
|
procedure ExtendRect(var Rect: TRect; const AExtension: TRect);
|
|
begin
|
|
with AExtension do
|
|
begin
|
|
Inc(Rect.Left, Left);
|
|
Inc(Rect.Top, Top);
|
|
Dec(Rect.Right, Right);
|
|
Dec(Rect.Bottom, Bottom);
|
|
end;
|
|
end;
|
|
|
|
function IsGlyphAssigned(AGlyph: TBitmap): Boolean;
|
|
begin
|
|
Result := (AGlyph <> nil) and not AGlyph.Empty;
|
|
end;
|
|
|
|
function IsImageAssigned(AImageList: TCustomImageList; AImageIndex: Integer): Boolean;
|
|
begin
|
|
Result := (AImageList <> nil) and (0 <= AImageIndex) and (AImageIndex < AImageList.Count);
|
|
end;
|
|
|
|
function GetRealColor(AColor: TColor): TColor;
|
|
var
|
|
DC: HDC;
|
|
begin
|
|
DC := GetDC(0);
|
|
Result := GetNearestColor(DC, AColor);
|
|
ReleaseDC(0, DC);
|
|
end;
|
|
|
|
function GetLightColor(ABtnFaceColorPart, AHighlightColorPart, AWindowColorPart: TcxColorPart): TColor;
|
|
var
|
|
ABtnFaceColor, AHighlightColor, AWindowColor: TColor;
|
|
|
|
function GetLightIndex(ABtnFaceValue, AHighlightValue, AWindowValue: Byte): Integer;
|
|
begin
|
|
Result :=
|
|
MulDiv(ABtnFaceValue, ABtnFaceColorPart, 100) +
|
|
MulDiv(AHighlightValue, AHighlightColorPart, 100) +
|
|
MulDiv(AWindowValue, AWindowColorPart, 100);
|
|
if Result < 0 then Result := 0;
|
|
if Result > 255 then Result := 255;
|
|
end;
|
|
|
|
begin
|
|
ABtnFaceColor := ColorToRGB(clBtnFace);
|
|
AHighlightColor := ColorToRGB(clHighlight);
|
|
AWindowColor := ColorToRGB(clWindow);
|
|
if (ABtnFaceColor = 0) or (ABtnFaceColor = $FFFFFF) then
|
|
Result := AHighlightColor
|
|
else
|
|
Result := RGB(
|
|
GetLightIndex(GetRValue(ABtnFaceColor), GetRValue(AHighlightColor), GetRValue(AWindowColor)),
|
|
GetLightIndex(GetGValue(ABtnFaceColor), GetGValue(AHighlightColor), GetGValue(AWindowColor)),
|
|
GetLightIndex(GetBValue(ABtnFaceColor), GetBValue(AHighlightColor), GetBValue(AWindowColor)));
|
|
end;
|
|
|
|
function GetLightBtnFaceColor: TColor;
|
|
|
|
function GetLightValue(Value: Byte): Byte;
|
|
begin
|
|
Result := Value + MulDiv(255 - Value, 16, 100);
|
|
end;
|
|
|
|
begin
|
|
Result := ColorToRGB(clBtnFace);
|
|
Result := RGB(
|
|
GetLightValue(GetRValue(Result)),
|
|
GetLightValue(GetGValue(Result)),
|
|
GetLightValue(GetBValue(Result)));
|
|
Result := GetRealColor(Result);
|
|
end;
|
|
|
|
function GetLightDownedColor: TColor;
|
|
begin
|
|
Result := GetRealColor(GetLightColor(11, 9, 73));
|
|
end;
|
|
|
|
function GetLightDownedSelColor: TColor;
|
|
begin
|
|
Result := GetRealColor(GetLightColor(14, 44, 40));
|
|
end;
|
|
|
|
function GetLightSelColor: TColor;
|
|
begin
|
|
Result := GetRealColor(GetLightColor(-2, 30, 72));
|
|
end;
|
|
|
|
procedure FillBitmapInfoHeader(out AHeader: TBitmapInfoHeader; AWidth, AHeight: Integer;
|
|
ATopDownDIB: Boolean); overload;
|
|
begin
|
|
AHeader.biSize := SizeOf(TBitmapInfoHeader);
|
|
AHeader.biWidth := AWidth;
|
|
if ATopDownDIB then
|
|
AHeader.biHeight := -AHeight
|
|
else
|
|
AHeader.biHeight := AHeight;
|
|
AHeader.biPlanes := 1;
|
|
AHeader.biBitCount := 32;
|
|
AHeader.biCompression := BI_RGB;
|
|
end;
|
|
|
|
procedure FillBitmapInfoHeader(out AHeader: TBitmapInfoHeader; ABitmap: TBitmap;
|
|
ATopDownDIB: Boolean); overload;
|
|
begin
|
|
FillBitmapInfoHeader(AHeader, ABitmap.Width, ABitmap.Height, ATopDownDIB);
|
|
end;
|
|
|
|
function GetBitmapBits(ABitmap: TBitmap; ATopDownDIB: Boolean): TRGBColors;
|
|
var
|
|
AInfo: TBitmapInfo;
|
|
begin
|
|
SetLength(Result, ABitmap.Width * ABitmap.Height);
|
|
FillBitmapInfoHeader(AInfo.bmiHeader, ABitmap, ATopDownDIB);
|
|
// GetDIBits(ABitmap.Canvas.Handle, ABitmap.Handle, 0, ABitmap.Height, nil, AInfo,
|
|
// DIB_RGB_COLORS);
|
|
GetDIBits(cxScreenCanvas.Handle, ABitmap.Handle, 0, ABitmap.Height, Result,
|
|
AInfo, DIB_RGB_COLORS);
|
|
end;
|
|
|
|
procedure SetBitmapBits(ABitmap: TBitmap; var AColors: TRGBColors;
|
|
ATopDownDIB: Boolean);
|
|
var
|
|
AInfo: TBitmapInfo;
|
|
begin
|
|
FillBitmapInfoHeader(AInfo.bmiHeader, ABitmap, ATopDownDIB);
|
|
SetDIBits(cxScreenCanvas.Handle, ABitmap.Handle, 0, ABitmap.Height,
|
|
AColors, AInfo, DIB_RGB_COLORS);
|
|
AColors := nil;
|
|
end;
|
|
|
|
function SystemAlphaBlend(ADestDC, ASrcDC: HDC; const ADestRect, ASrcRect: TRect; AConstantAlpha: Byte = $FF): Boolean;
|
|
{$IFNDEF DELPHI6}
|
|
const
|
|
AC_SRC_ALPHA = 1;
|
|
{$ENDIF}
|
|
var
|
|
ABlendFunction: TBlendFunction;
|
|
begin
|
|
ABlendFunction.BlendOp := AC_SRC_OVER;
|
|
ABlendFunction.BlendFlags := 0;
|
|
ABlendFunction.SourceConstantAlpha := AConstantAlpha;
|
|
ABlendFunction.AlphaFormat := AC_SRC_ALPHA;
|
|
Result := Assigned(VCLAlphaBlend) and VCLAlphaBlend(
|
|
ADestDC, ADestRect.Left, ADestRect.Top, cxRectWidth(ADestRect), cxRectHeight(ADestRect),
|
|
ASrcDC, ASrcRect.Left, ASrcRect.Top, cxRectWidth(ASrcRect), cxRectHeight(ASrcRect), ABlendFunction);
|
|
end;
|
|
|
|
function cxColorByName(const AText: string; var AColor: TColor): Boolean;
|
|
var
|
|
I: Integer;
|
|
begin
|
|
Result := False;
|
|
for I := Low(cxColorsByName) to High(cxColorsByName) do
|
|
if SameText(AText, cxColorsByName[I].Name) then
|
|
begin
|
|
AColor := cxColorsByName[I].Color;
|
|
Result := True;
|
|
Break;
|
|
end;
|
|
end;
|
|
|
|
function cxNameByColor(AColor: TColor; var AText: string): Boolean;
|
|
var
|
|
I: Integer;
|
|
begin
|
|
Result := False;
|
|
for I := Low(cxColorsByName) to High(cxColorsByName) do
|
|
if AColor = cxColorsByName[I].Color then
|
|
begin
|
|
AText := cxColorsByName[I].Name;
|
|
Result := True;
|
|
Break;
|
|
end;
|
|
end;
|
|
|
|
function cxColorToRGBQuad(AColor: TColor; AReserved: Byte = 0): TRGBQuad;
|
|
begin
|
|
DWORD(Result) := ColorToRGB(AColor);
|
|
|
|
//#DG exchange values
|
|
Result.rgbBlue := Result.rgbBlue xor Result.rgbRed;
|
|
Result.rgbRed := Result.rgbBlue xor Result.rgbRed;
|
|
Result.rgbBlue := Result.rgbBlue xor Result.rgbRed;
|
|
Result.rgbReserved := AReserved;
|
|
end;
|
|
|
|
procedure CommonAlphaBlend(ADestDC, ASrcDC: HDC; const ADestRect, ASrcRect: TRect; ASmoothImage: Boolean; AConstantAlpha: Byte = $FF);
|
|
|
|
function CreateDirectBitmap(ASrcDC: HDC; const ASrcRect: TRect): TBitmap;
|
|
var
|
|
ARect: TRect;
|
|
begin
|
|
ARect := Rect(0, 0, cxRectWidth(ASrcRect), cxRectHeight(ASrcRect));
|
|
Result := cxCreateBitmap(ARect, pf32bit);
|
|
Result.Canvas.Brush.Color := 0;
|
|
Result.Canvas.FillRect(ARect);
|
|
cxBitBlt(Result.Canvas.Handle, ASrcDC, ARect, ASrcRect.TopLeft, SRCCOPY);
|
|
end;
|
|
|
|
function cxRectIdentical(const ARect1, ARect2: TRect): Boolean;
|
|
begin
|
|
Result := (cxRectWidth(ARect1) = cxRectWidth(ARect2)) and (cxRectHeight(ARect1) = cxRectHeight(ARect2));
|
|
end;
|
|
|
|
procedure ResizeBitmap(ADestBitmap, ASrcBitmap: TBitmap);
|
|
begin
|
|
StretchBlt(ADestBitmap.Canvas.Handle, 0, 0, ADestBitmap.Width, ADestBitmap.Height,
|
|
ASrcBitmap.Canvas.Handle, 0, 0, ASrcBitmap.Width, ASrcBitmap.Height, SRCCOPY);
|
|
end;
|
|
|
|
procedure InternalAlphaBlend(ADestBitmap, ASrcBitmap: TBitmap);
|
|
|
|
procedure SoftwareAlphaBlend(AWidth, AHeight: Integer);
|
|
var
|
|
ASourceColors, ADestColors: TRGBColors;
|
|
I: Integer;
|
|
begin
|
|
ASourceColors := GetBitmapBits(ASrcBitmap, False);
|
|
ADestColors := GetBitmapBits(ADestBitmap, False);
|
|
for I := 0 to AWidth * AHeight - 1 do
|
|
cxBlendFunction(ASourceColors[I], ADestColors[I], AConstantAlpha);
|
|
SetBitmapBits(ADestBitmap, ADestColors, False);
|
|
end;
|
|
|
|
var
|
|
AClientRect: TRect;
|
|
begin
|
|
AClientRect := Rect(0, 0, ADestBitmap.Width, ADestBitmap.Height);
|
|
if not SystemAlphaBlend(ADestBitmap.Canvas.Handle, ASrcBitmap.Canvas.Handle, AClientRect, AClientRect, AConstantAlpha) then
|
|
SoftwareAlphaBlend(AClientRect.Right, AClientRect.Bottom);
|
|
end;
|
|
|
|
procedure ComplexAlphaBlend;
|
|
var
|
|
ADirectDestBitmap, ADirectSrcBitmap, AStretchedSrcBitmap: TBitmap;
|
|
begin
|
|
ADirectSrcBitmap := CreateDirectBitmap(ASrcDC, ASrcRect);
|
|
ADirectDestBitmap := CreateDirectBitmap(ADestDC, ADestRect);
|
|
AStretchedSrcBitmap := cxCreateBitmap(ADestRect, pf32bit);
|
|
try
|
|
if ASmoothImage then
|
|
cxSmoothResizeBitmap(ADirectSrcBitmap, AStretchedSrcBitmap, True)
|
|
else
|
|
ResizeBitmap(AStretchedSrcBitmap, ADirectSrcBitmap);
|
|
InternalAlphaBlend(ADirectDestBitmap, AStretchedSrcBitmap);
|
|
cxBitBlt(ADestDC, ADirectDestBitmap.Canvas.Handle, ADestRect, cxNullPoint, SRCCOPY);
|
|
finally
|
|
AStretchedSrcBitmap.Free;
|
|
ADirectDestBitmap.Free;
|
|
ADirectSrcBitmap.Free;
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
ASmoothImage := ASmoothImage and not cxRectIdentical(ADestRect, ASrcRect);
|
|
if IsWin95X or not Assigned(VCLAlphaBlend) or ASmoothImage then
|
|
ComplexAlphaBlend
|
|
else
|
|
SystemAlphaBlend(ADestDC, ASrcDC, ADestRect, ASrcRect, AConstantAlpha);
|
|
end;
|
|
|
|
procedure cxAlphaBlend(ADestBitmap, ASrcBitmap: TBitmap; const ADestRect, ASrcRect: TRect; ASmoothImage: Boolean = False; AConstantAlpha: Byte = $FF); overload;
|
|
begin
|
|
CommonAlphaBlend(ADestBitmap.Canvas.Handle, ASrcBitmap.Canvas.Handle, ADestRect, ASrcRect, ASmoothImage, AConstantAlpha);
|
|
end;
|
|
|
|
procedure cxAlphaBlend(ADestDC: HDC; ASrcBitmap: TBitmap; const ADestRect, ASrcRect: TRect; ASmoothImage: Boolean = False; AConstantAlpha: Byte = $FF); overload;
|
|
begin
|
|
CommonAlphaBlend(ADestDC, ASrcBitmap.Canvas.Handle, ADestRect, ASrcRect, ASmoothImage, AConstantAlpha);
|
|
end;
|
|
|
|
procedure cxAlphaBlend(ADestDC, ASrcDC: HDC; const ADestRect, ASrcRect: TRect; ASmoothImage: Boolean = False; AConstantAlpha: Byte = $FF); overload;
|
|
begin
|
|
CommonAlphaBlend(ADestDC, ASrcDC, ADestRect, ASrcRect, ASmoothImage, AConstantAlpha);
|
|
end;
|
|
|
|
procedure cxBitBlt(ADestDC, ASrcDC: HDC; const ADestRect: TRect; const ASrcTopLeft: TPoint; ROP: DWORD);
|
|
begin
|
|
BitBlt(ADestDC, ADestRect.Left, ADestRect.Top, cxRectWidth(ADestRect), cxRectHeight(ADestRect),
|
|
ASrcDC, ASrcTopLeft.X, ASrcTopLeft.Y, ROP);
|
|
end;
|
|
|
|
procedure cxBlendFunction(const ASource: TRGBQuad; var ADest: TRGBQuad; ASourceConstantAlpha: Byte);
|
|
|
|
function GetValue(AValue: Single): Byte;
|
|
begin
|
|
if AValue < 255 then
|
|
Result := Round(AValue)
|
|
else
|
|
Result := 255;
|
|
end;
|
|
|
|
var
|
|
ASCA, ASrcAlpha: Single;
|
|
begin
|
|
ASCA := ASourceConstantAlpha / 255;
|
|
ASrcAlpha := 1 - ASource.rgbReserved * ASCA / 255;
|
|
|
|
ADest.rgbRed := GetValue(ASource.rgbRed * ASCA + ASrcAlpha * ADest.rgbRed);
|
|
ADest.rgbGreen := GetValue(ASource.rgbGreen * ASCA + ASrcAlpha * ADest.rgbGreen);
|
|
ADest.rgbBlue := GetValue(ASource.rgbBlue * ASCA + ASrcAlpha * ADest.rgbBlue);
|
|
ADest.rgbReserved := GetValue(ASource.rgbReserved * ASCA + ASrcAlpha * ADest.rgbReserved);
|
|
end;
|
|
|
|
function cxCreateBitmap(const ASize: TSize; AFormat: TPixelFormat = pf24bit): TBitmap;
|
|
begin
|
|
Result := cxCreateBitmap(ASize.cx, ASize.cy, AFormat);
|
|
end;
|
|
|
|
function cxCreateBitmap(const ARect: TRect; AFormat: TPixelFormat = pf24bit): TBitmap;
|
|
begin
|
|
Result := cxCreateBitmap(cxRectWidth(ARect), cxRectHeight(ARect), AFormat);
|
|
end;
|
|
|
|
function cxCreateBitmap(AWidth, AHeight: Integer; AFormat: TPixelFormat = pf24bit): TBitmap;
|
|
begin
|
|
Result := TBitmap.Create;
|
|
{$IFDEF DELPHI6}
|
|
Result.PixelFormat := AFormat;
|
|
{$ENDIF}
|
|
Result.Width := AWidth;
|
|
Result.Height := AHeight;
|
|
{$IFNDEF DELPHI6}
|
|
Result.PixelFormat := AFormat;
|
|
{$ENDIF}
|
|
end;
|
|
|
|
function cxCreateTrueColorBitmap(const ASize: TSize): TBitmap;
|
|
begin
|
|
Result := cxCreateTrueColorBitmap(ASize.cx, ASize.cy);
|
|
end;
|
|
|
|
function cxCreateTrueColorBitmap(AWidth, AHeight: Integer): TBitmap;
|
|
begin
|
|
Result := TBitmap.Create;
|
|
Result.Handle := cxCreateTrueColorBitmapHandle(AWidth, AHeight);
|
|
end;
|
|
|
|
function cxCreateTrueColorBitmapHandle(AWidth, AHeight: Integer; ABPP: Integer = 32): HBitmap;
|
|
begin
|
|
Result := CreateBitmap(AWidth, AHeight, 1, ABPP, nil);
|
|
end;
|
|
|
|
procedure cxDrawDesignRect(ACanvas: TcxCanvas; const ARect: TRect; ASelected: Boolean);
|
|
const
|
|
Colors: array[Boolean] of TColor = ($A0FFA0, $9090FF);
|
|
var
|
|
AColor: TColor;
|
|
I: Integer;
|
|
AShadowRect: TRect;
|
|
begin
|
|
if not IsRectEmpty(ARect) then
|
|
begin
|
|
ACanvas.SaveState;
|
|
try
|
|
ACanvas.SetClipRegion(TcxRegion.Create(ARect), roSet);
|
|
AColor := Colors[ASelected];
|
|
ACanvas.FillRect(ARect, AColor);
|
|
ACanvas.Pen.Color := Dark(AColor, 75);
|
|
for I := 1 to MulDiv(ARect.Right, 3, 2) do
|
|
ACanvas.Polyline([Point(ARect.Right - I * 3, ARect.Top), Point(ARect.Right, ARect.Top + I * 3)]);
|
|
ACanvas.FrameRect(ARect, Dark(AColor, 50));
|
|
finally
|
|
ACanvas.RestoreState;
|
|
end;
|
|
ACanvas.ExcludeClipRect(ARect);
|
|
AShadowRect := cxRectOffset(ARect, 1, 1);
|
|
ACanvas.FillRect(AShadowRect, clBtnShadow);
|
|
ACanvas.ExcludeClipRect(AShadowRect);
|
|
end;
|
|
end;
|
|
|
|
procedure cxDrawImage(ADC: THandle; AGlyphRect, ABackgroundRect: TRect; AGlyph: TBitmap;
|
|
AImages: TCustomImageList; AImageIndex: Integer; ADrawMode: TcxImageDrawMode;
|
|
ASmoothImage: Boolean = False; ABrush: THandle = 0;
|
|
ATransparentColor: TColor = clNone; AUseLeftBottomPixelAsTransparent: Boolean = True);
|
|
|
|
procedure DrawBackGround(ABitmap: TcxBitmap);
|
|
begin
|
|
if ABrush = 0 then
|
|
cxBitBlt(ABitmap.Canvas.Handle, ADC, ABitmap.ClientRect, ABackgroundRect.TopLeft, SRCCOPY)
|
|
else
|
|
FillRect(ABitmap.Canvas.Handle, ABitmap.ClientRect, ABrush);
|
|
end;
|
|
|
|
procedure DrawImage(ABitmap: TcxBitmap; ADrawMode: TcxImageDrawMode);
|
|
|
|
procedure MakeImage(AImageBitmap: TcxBitmap; out AIsAlphaUsed: Boolean);
|
|
begin
|
|
if not IsGlyphAssigned(AGlyph) then
|
|
begin
|
|
TcxImageList.GetImageInfo(AImages.Handle, AImageIndex, AImageBitmap, nil);
|
|
// cxDrawImageList(AImages.Handle, AImageIndex, AImageBitmap.Canvas.Handle,
|
|
// cxNullPoint, AImages.DrawingStyle, AImages.ImageType)
|
|
//#DG can break destination AImages.Draw(AImageBitmap.Canvas, 0, 0, AImageIndex)
|
|
AIsAlphaUsed := TcxImageList.GetPixelFormat(AImages.Handle) >= 32;
|
|
end
|
|
else
|
|
begin
|
|
AImageBitmap.CopyBitmap(AGlyph);
|
|
AIsAlphaUsed := (AGlyph.PixelFormat = pf32bit) or
|
|
((AGlyph.PixelFormat = pfDevice) and (GetDeviceCaps(cxScreenCanvas.Handle, BITSPIXEL) >= 32));
|
|
end;
|
|
AIsAlphaUsed := AIsAlphaUsed and AImageBitmap.IsAlphaUsed;
|
|
if not AIsAlphaUsed then
|
|
AImageBitmap.TransformBitmap(btmSetOpaque);
|
|
end;
|
|
|
|
procedure MakeMask(AImageBitmap, AMaskBitmap: TcxBitmap; AIsAlphaUsed: Boolean);
|
|
var
|
|
AImageListMask: TcxBitmap;
|
|
begin
|
|
AMaskBitmap.CopyBitmap(AImageBitmap);
|
|
if not AIsAlphaUsed then
|
|
begin
|
|
if not IsGlyphAssigned(AGlyph) then
|
|
begin
|
|
AImageListMask := TcxBitmap.CreateSize(AMaskBitmap.ClientRect);
|
|
try
|
|
TcxImageList.GetImageInfo(AImages.Handle, AImageIndex, nil, AImageListMask);
|
|
AImageListMask.TransformBitmap(btmCorrectBlend);
|
|
AMaskBitmap.Filter(AImageListMask);
|
|
finally
|
|
AImageListMask.Free;
|
|
end;
|
|
end;
|
|
if ATransparentColor <> clNone then
|
|
AMaskBitmap.TransparentPixels.Add(ATransparentColor);
|
|
if AUseLeftBottomPixelAsTransparent and IsGlyphAssigned(AGlyph) then
|
|
AMaskBitmap.TransparentPixels.Add(AMaskBitmap.TransparentColor);
|
|
end;
|
|
AMaskBitmap.TransformBitmap(btmMakeMask);
|
|
end;
|
|
|
|
const
|
|
AImageShadowSize = 2;
|
|
var
|
|
BW, BH: Integer;
|
|
AImageBitmap, AMaskBitmap: TcxBitmap;
|
|
AConstantAlpha: Byte;
|
|
AIsAlphaUsed: Boolean;
|
|
begin
|
|
OffsetRect(AGlyphRect, -ABackgroundRect.Left, -ABackgroundRect.Top);
|
|
if not Assigned(CustomDrawImageProc) or not CustomDrawImageProc(ABitmap.Canvas, AImages, AImageIndex, AGlyph, AGlyphRect, ADrawMode) then
|
|
begin
|
|
if not IsGlyphAssigned(AGlyph) then
|
|
begin
|
|
BW := AImages.Width;
|
|
BH := AImages.Height;
|
|
end
|
|
else
|
|
begin
|
|
BW := AGlyph.Width;
|
|
BH := AGlyph.Height;
|
|
end;
|
|
|
|
AImageBitmap := GetImageBitmap(BW, BH);
|
|
MakeImage(AImageBitmap, AIsAlphaUsed);
|
|
|
|
AMaskBitmap := GetMaskBitmap(BW, BH);
|
|
MakeMask(AImageBitmap, AMaskBitmap, AIsAlphaUsed);
|
|
AImageBitmap.Filter(AMaskBitmap);
|
|
AConstantAlpha := $FF;
|
|
case ADrawMode of
|
|
idmFaded:
|
|
begin
|
|
AImageBitmap.TransformBitmap(btmFade);
|
|
AConstantAlpha := FadeMap.SrcConstantAlpha;
|
|
end;
|
|
idmGrayScale:
|
|
AImageBitmap.TransformBitmap(btmGrayScale);
|
|
idmDingy:
|
|
AImageBitmap.TransformBitmap(btmDingy);
|
|
idmShadowed:
|
|
begin
|
|
AImageBitmap.DrawShadow(AMaskBitmap, AImageShadowSize, clBtnShadow, True);
|
|
AGlyphRect := cxRectInflate(AGlyphRect, 0, 0, AImageShadowSize, AImageShadowSize);
|
|
OffsetRect(AGlyphRect, -AImageShadowSize div 2, -AImageShadowSize div 2);
|
|
end;
|
|
idmDisabled:
|
|
begin
|
|
if AIsAlphaUsed then
|
|
begin
|
|
AImageBitmap.TransformBitmap(btmDisable);
|
|
AConstantAlpha := DisableMap.SrcConstantAlpha;
|
|
end
|
|
else
|
|
begin
|
|
AImageBitmap.TransformBitmap(btmDirty);
|
|
AImageBitmap.DrawShadow(AMaskBitmap, 1, clBtnHighlight);
|
|
end;
|
|
end;
|
|
end;
|
|
AImageBitmap.AlphaBlend(ABitmap, AGlyphRect, ASmoothImage, AConstantAlpha);
|
|
end;
|
|
end;
|
|
|
|
var
|
|
ADrawBitmap: TcxBitmap;
|
|
begin
|
|
if not (IsGlyphAssigned(AGlyph) or IsImageAssigned(AImages, AImageIndex)) then
|
|
Exit;
|
|
|
|
ADrawBitmap := GetDrawBitmap(cxRectWidth(ABackgroundRect), cxRectHeight(ABackgroundRect));
|
|
DrawBackGround(ADrawBitmap);
|
|
DrawImage(ADrawBitmap, ADrawMode);
|
|
cxBitBlt(ADC, ADrawBitmap.Canvas.Handle, ABackgroundRect, cxNullPoint, SRCCOPY);
|
|
end;
|
|
|
|
function GetImageListStyle(ADrawingStyle: TDrawingStyle; AImageType: TImageType): DWORD;
|
|
const
|
|
ADrawingStyles: array[TDrawingStyle] of DWORD = (ILD_FOCUS, ILD_SELECTED, ILD_NORMAL, ILD_TRANSPARENT);
|
|
AImageTypes: array[TImageType] of DWORD = (0, ILD_MASK);
|
|
begin
|
|
Result := ADrawingStyles[ADrawingStyle] or AImageTypes[AImageType];
|
|
end;
|
|
|
|
procedure cxDrawImageList(AImageListHandle: HIMAGELIST; AImageIndex: Integer;
|
|
ADC: HDC; APoint: TPoint; ADrawingStyle: TDrawingStyle; AImageType: TImageType);
|
|
begin
|
|
ImageList_Draw(AImageListHandle, AImageIndex, ADC, APoint.X, APoint.Y, GetImageListStyle(ADrawingStyle, AImageType));
|
|
end;
|
|
|
|
procedure cxDrawHatch(ADC: HDC; const ARect: TRect; AColor1, AColor2: TColor; AStep: Byte; AAlpha1: Byte = $FF; AAlpha2: Byte = $FF);
|
|
var
|
|
ADrawBitmap: TcxBitmap;
|
|
begin
|
|
ADrawBitmap := TcxBitmap.CreateSize(ARect);
|
|
try
|
|
cxBitBlt(ADrawBitmap.Canvas.Handle, ADC, ADrawBitmap.ClientRect, ARect.TopLeft, SRCCOPY);
|
|
ADrawBitmap.DrawHatch(AColor1, AColor2, AStep, AAlpha1, AAlpha2);
|
|
cxBitBlt(ADC, ADrawBitmap.Canvas.Handle, ARect, cxNullPoint, SRCCOPY);
|
|
finally
|
|
ADrawBitmap.Free;
|
|
end;
|
|
end;
|
|
|
|
function Lanczos3Filter(Value: Single): Single;
|
|
|
|
function SinC(Value: Single): Single;
|
|
begin
|
|
if (Value <> 0.0) then
|
|
begin
|
|
Value := Value * PI;
|
|
Result := Sin(Value) / Value
|
|
end
|
|
else Result := 1.0;
|
|
end;
|
|
|
|
begin
|
|
if (Value < 0.0) then Value := -Value;
|
|
if (Value < 3.0) then
|
|
Result := SinC(Value) * SinC(Value / 3.0)
|
|
else
|
|
Result := 0.0;
|
|
end;
|
|
|
|
procedure BuildFilter(out AContributorList: TContributorList; AScale: Single; ASrcSize, ADestSize: Integer);
|
|
var
|
|
I, J, APixel, AMaxContributors, AWeight: Integer;
|
|
ACenter, ARadius, AScaleFactor: Single;
|
|
begin
|
|
SetLength(AContributorList, ADestSize);
|
|
if AScale < 1.0 then AScaleFactor := 1.0 / AScale else AScaleFactor := 1.0;
|
|
ARadius := 3 * AScaleFactor;
|
|
AMaxContributors := Trunc(ARadius * 2.0 + 1);
|
|
for I := 0 to ADestSize - 1 do
|
|
with AContributorList[I] do
|
|
begin
|
|
SetLength(Contributors, AMaxContributors);
|
|
Count := 0;
|
|
ACenter := I / AScale;
|
|
for J := Floor(ACenter - ARadius) to Ceil(ACenter + ARadius) do
|
|
begin
|
|
AWeight := Round(Lanczos3Filter((ACenter - J) / AScaleFactor) / AScaleFactor * 256);
|
|
if AWeight = 0 then continue;
|
|
if J < 0 then
|
|
APixel := -J
|
|
else
|
|
if (J >= ASrcSize) then
|
|
APixel := ASrcSize - J + ASrcSize - 1
|
|
else
|
|
APixel := J;
|
|
Contributors[Count].Pixel := APixel;
|
|
Contributors[Count].Weight := AWeight;
|
|
Inc(Count);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure ApplyFilter(var AContributorList: TContributorList;
|
|
var ASource: TRGBColors; ASrcSize, ASrcLineLength: Integer;
|
|
var ADest: TRGBColors; ADestSize, ADestLineLength: Integer;
|
|
AHorizontal: Boolean);
|
|
|
|
function GetColorPart(Value: Integer): Integer;
|
|
begin
|
|
if Value < 0 then
|
|
Result := 0
|
|
else
|
|
begin
|
|
Value := Value shr 8;
|
|
Result := Min(255, Value);
|
|
end;
|
|
end;
|
|
|
|
var
|
|
AWeight: Integer;
|
|
AColor: TRGBQuad;
|
|
R, G, B, A: Integer;
|
|
K, I, J: Integer;
|
|
begin
|
|
for I := 0 to ASrcSize - 1 do
|
|
for J := 0 to ADestSize - 1 do
|
|
with AContributorList[J] do
|
|
begin
|
|
R := 0; G := 0; B := 0; A := 0;
|
|
for K := 0 to Count - 1 do
|
|
begin
|
|
if AHorizontal then
|
|
AColor := ASource[Contributors[K].Pixel + (I * ASrcLineLength)]
|
|
else
|
|
AColor := ASource[I + (Contributors[K].Pixel * ASrcLineLength)];
|
|
AWeight := Contributors[K].Weight;
|
|
if AWeight = 0 then continue;
|
|
Inc(R, AColor.rgbRed * AWeight);
|
|
Inc(G, AColor.rgbGreen * AWeight);
|
|
Inc(B, AColor.rgbBlue * AWeight);
|
|
Inc(A, AColor.rgbReserved * AWeight);
|
|
end;
|
|
AColor.rgbRed := GetColorPart(R);
|
|
AColor.rgbGreen := GetColorPart(G);
|
|
AColor.rgbBlue := GetColorPart(B);
|
|
AColor.rgbReserved := GetColorPart(A);
|
|
if AHorizontal then
|
|
ADest[J + (I * ADestLineLength)] := AColor
|
|
else
|
|
ADest[I + (J * ADestLineLength)] := AColor;
|
|
end;
|
|
//dispose contributors and source buffer
|
|
for I := 0 to HIGH(AContributorList) do
|
|
AContributorList[I].Contributors := nil;
|
|
AContributorList := nil;
|
|
ASource := nil;
|
|
end;
|
|
|
|
procedure cxSmoothResizeBitmap(ASource, ADestination: TBitmap; AForceUseLanczos3Filter: Boolean = False);
|
|
var
|
|
AContributorList: TContributorList;
|
|
ASrcWidth, ASrcHeight, ADestWidth, ADestHeight: Integer;
|
|
ABuffer1, ABuffer2: TRGBColors;
|
|
AOldMode: Cardinal;
|
|
AScale: Single;
|
|
begin
|
|
ADestWidth := ADestination.Width;
|
|
ADestHeight := ADestination.Height;
|
|
ASrcWidth := ASource.Width;
|
|
ASrcHeight := ASource.Height;
|
|
if (ADestWidth = 0) or (ADestHeight = 0) or (ASrcWidth = 0) or (ASrcHeight = 0) then Exit;
|
|
ASource.Canvas.Lock;
|
|
ADestination.Canvas.Lock;
|
|
try
|
|
if IsWinNT and not AForceUseLanczos3Filter then
|
|
begin
|
|
AOldMode := SetStretchBltMode(ADestination.Canvas.Handle, HALFTONE);
|
|
StretchBlt(ADestination.Canvas.Handle, 0, 0, ADestWidth, ADestHeight,
|
|
ASource.Canvas.Handle, 0, 0, ASrcWidth, ASrcHeight, srcCopy);
|
|
SetStretchBltMode(ADestination.Canvas.Handle, AOldMode);
|
|
end
|
|
else
|
|
begin
|
|
ABuffer1 := GetBitmapBits(ASource, False);
|
|
SetLength(ABuffer2, ADestWidth * ASrcHeight);
|
|
if ASrcWidth = 1 then
|
|
AScale := ADestWidth / ASrcWidth
|
|
else
|
|
AScale := (ADestWidth - 1) / (ASrcWidth - 1);
|
|
BuildFilter(AContributorList, AScale, ASrcWidth, ADestWidth);
|
|
ApplyFilter(AContributorList, ABuffer1, ASrcHeight, ASrcWidth, ABuffer2, ADestWidth, ADestWidth, True);
|
|
ABuffer1 := GetBitmapBits(ADestination, False);
|
|
if (ASrcHeight = 1) or (ADestHeight = 1) then
|
|
AScale := ADestHeight / ASrcHeight
|
|
else
|
|
AScale := (ADestHeight - 1) / (ASrcHeight - 1);
|
|
BuildFilter(AContributorList, AScale, ASrcHeight, ADestHeight);
|
|
ApplyFilter(AContributorList, ABuffer2, ADestWidth, ADestWidth, ABuffer1, ADestHeight, ADestWidth, False);
|
|
SetBitmapBits(ADestination, ABuffer1, False);
|
|
end;
|
|
finally
|
|
ASource.Canvas.Unlock;
|
|
ADestination.Canvas.Unlock;
|
|
end;
|
|
end;
|
|
|
|
function cxCreateBitmapCopy(ASourceBitmap: TBitmap): TcxBitmap;
|
|
begin
|
|
Result := TcxBitmap.CreateSize(ASourceBitmap.Width, ASourceBitmap.Height);
|
|
Result.CopyBitmap(ASourceBitmap);
|
|
end;
|
|
|
|
procedure cxMakeTrueColorBitmap(ASourceBitmap, ATrueColorBitmap: TBitmap);
|
|
var
|
|
AcxBitmap, AcxMask: TcxBitmap;
|
|
begin
|
|
AcxBitmap := cxCreateBitmapCopy(ASourceBitmap);
|
|
try
|
|
AcxBitmap.TransformBitmap(btmSetOpaque);
|
|
AcxMask := cxCreateBitmapCopy(ASourceBitmap);
|
|
try
|
|
AcxMask.TransparentPixels.Add(ASourceBitmap.TransparentColor);
|
|
AcxMask.TransformBitmap(btmMakeMask);
|
|
AcxBitmap.Filter(AcxMask);
|
|
ATrueColorBitmap.Assign(AcxBitmap);
|
|
finally
|
|
AcxMask.Free;
|
|
end;
|
|
finally
|
|
AcxBitmap.Free;
|
|
end;
|
|
end;
|
|
|
|
procedure cxMakeMaskBitmap(ASourceBitmap, AMaskBitmap: TBitmap);
|
|
var
|
|
ABitmap: TcxBitmap;
|
|
begin
|
|
ABitmap := cxCreateBitmapCopy(ASourceBitmap);
|
|
try
|
|
if not ABitmap.IsAlphaUsed then
|
|
ABitmap.RecoverAlphaChannel(ASourceBitmap.TransparentColor);
|
|
ABitmap.TransformBitmap(btmMakeMask);
|
|
cxBitBlt(AMaskBitmap.Canvas.Handle, ABitmap.Canvas.Handle, ABitmap.ClientRect, cxNullPoint, SRCCOPY);
|
|
finally
|
|
ABitmap.Free;
|
|
end;
|
|
end;
|
|
|
|
{!!! TODO: adapt to .net}
|
|
|
|
function cxGetCursorSize: TSize;
|
|
var
|
|
IconInfo: TIconInfo;
|
|
BitmapInfoSize, BitmapBitsSize, ImageSize: DWORD;
|
|
Bitmap: PBitmapInfoHeader;
|
|
Bits: Pointer;
|
|
BytesPerScanline: Integer;
|
|
|
|
function FindScanline(Source: Pointer; MaxLen: Cardinal;
|
|
Value: Cardinal): Cardinal; assembler;
|
|
asm
|
|
PUSH ECX
|
|
MOV ECX,EDX
|
|
MOV EDX,EDI
|
|
MOV EDI,EAX
|
|
POP EAX
|
|
REPE SCASB
|
|
MOV EAX,ECX
|
|
MOV EDI,EDX
|
|
end;
|
|
|
|
begin
|
|
{ Default value is entire icon height }
|
|
Result.cy := GetSystemMetrics(SM_CYCURSOR);
|
|
Result.cx := GetSystemMetrics(SM_CXCURSOR);
|
|
|
|
if GetIconInfo(GetCursor, IconInfo) then
|
|
try
|
|
GetDIBSizes(IconInfo.hbmMask, BitmapInfoSize, BitmapBitsSize);
|
|
Bitmap := AllocMem(DWORD(BitmapInfoSize) + BitmapBitsSize);
|
|
try
|
|
Bits := Pointer(DWORD(Bitmap) + BitmapInfoSize);
|
|
if GetDIB(IconInfo.hbmMask, 0, Bitmap^, Bits^) and
|
|
(Bitmap^.biBitCount = 1) then
|
|
begin
|
|
{ Point Bits to the end of this bottom-up bitmap }
|
|
with Bitmap^ do
|
|
begin
|
|
Result.cx := biWidth;
|
|
BytesPerScanline := ((biWidth * biBitCount + 31) and not 31) div 8;
|
|
ImageSize := biWidth * BytesPerScanline;
|
|
Bits := Pointer(DWORD(Bits) + BitmapBitsSize - ImageSize);
|
|
{ Use the width to determine the height since another mask bitmap
|
|
may immediately follow }
|
|
Result.cy := FindScanline(Bits, ImageSize, $FF);
|
|
{ In case the and mask is blank, look for an empty scanline in the
|
|
xor mask. }
|
|
if (Result.cy = 0) and (biHeight >= 2 * biWidth) then
|
|
Result.cy := FindScanline(Pointer(DWORD(Bits) - ImageSize),
|
|
ImageSize, $00);
|
|
Result.cy := Result.cy div BytesPerScanline;
|
|
end;
|
|
Dec(Result.cy, IconInfo.yHotSpot);
|
|
end;
|
|
finally
|
|
FreeMem(Bitmap);
|
|
end;
|
|
finally
|
|
if IconInfo.hbmColor <> 0 then DeleteObject(IconInfo.hbmColor);
|
|
if IconInfo.hbmMask <> 0 then DeleteObject(IconInfo.hbmMask);
|
|
end;
|
|
end;
|
|
|
|
procedure cxAlphaBlend(ASource: TBitmap; ARect: TRect;
|
|
const ASelColor: TColor; Alpha: Byte = 170);
|
|
var
|
|
ARow, ACol: Integer;
|
|
SrcLine: Pointer;
|
|
C1, C2: Double;
|
|
AColorValues: array[0..3] of Byte;
|
|
P: TPoint;
|
|
begin
|
|
C1 := Alpha / 255;
|
|
C2 := 1.0 - C1;
|
|
AColorValues[0] := Round(GetBValue(ASelColor) * C1);
|
|
AColorValues[1] := Round(GetGValue(ASelColor) * C1);
|
|
AColorValues[2] := Round(GetRValue(ASelColor) * C1);
|
|
AColorValues[3] := 0;
|
|
GetWindowOrgEx(ASource.Canvas.Handle, P);
|
|
OffsetRect(ARect, -P.X, -P.Y);
|
|
for ARow := Max(ARect.Top, 0) to Min(ARect.Bottom, ASource.Height - 1) do
|
|
begin
|
|
SrcLine := ASource.ScanLine[ARow];
|
|
ACol := Max(0, ARect.Left * 4);
|
|
while ACol < Min(ARect.Right * 4, ASource.Width * 4 - 1) do
|
|
begin
|
|
WriteByte(SrcLine, AColorValues[ACol mod 4] + Round(ReadByte(SrcLine, ACol) * C2), ACol);
|
|
Inc(ACol);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure cxAlphaBlend(
|
|
ADest, ABkSource, ASource: TBitmap; Alpha: Byte = cxDefaultAlphaValue);
|
|
|
|
function SystemAlphaPaint: Boolean;
|
|
var
|
|
ABlendFunction: TBlendFunction;
|
|
begin
|
|
if not Assigned(VCLAlphaBlend) then
|
|
begin
|
|
Result := False;
|
|
Exit;
|
|
end;
|
|
ABlendFunction := DefaultBlendFunction;
|
|
ABlendFunction.SourceConstantAlpha := Alpha;
|
|
with ADest do
|
|
begin
|
|
Canvas.Draw(0, 0, ABkSource); // Assign(ABkSource); todo: graphics bug image not copying but _AddRef called
|
|
Result := VCLAlphaBlend(Canvas.Handle,
|
|
0, 0, Width, Height, ASource.Canvas.Handle, 0, 0, Width, Height, ABlendFunction);
|
|
end;
|
|
end;
|
|
|
|
procedure AlphaPaint;
|
|
var
|
|
ACount, K: Integer;
|
|
DstLine, BkSrcLine, SrcLine: Pointer;
|
|
C1, C2: Double;
|
|
begin
|
|
C1 := Alpha / 255;
|
|
C2 := 1.0 - C1;
|
|
with ASource do
|
|
begin
|
|
K := Height;
|
|
ACount := ((Width * 24 + 31) and not 31) shr 3 * K;
|
|
end;
|
|
BkSrcLine := ABkSource.ScanLine[K - 1];
|
|
SrcLine := ASource.ScanLine[K - 1];
|
|
DstLine := ADest.ScanLine[K - 1];
|
|
for K := 0 to ACount - 1 do
|
|
WriteByte(DstLine,
|
|
Round(ReadByte(SrcLine, K) * C1) + Round(ReadByte(BkSrcLine, K) * C2), K);
|
|
end;
|
|
|
|
procedure DoAlphaPaint;
|
|
begin
|
|
if GetDeviceCaps(cxScreenCanvas.Handle, BITSPIXEL) in [16, 24, 32] then
|
|
AlphaPaint
|
|
else
|
|
ADest.Canvas.Draw(0, 0, ASource); // .Assign(ASource);
|
|
end;
|
|
|
|
begin
|
|
if not SystemAlphaPaint then DoAlphaPaint;
|
|
end;
|
|
|
|
procedure cxApplyViewParams(ACanvas: TcxCanvas;
|
|
const AViewParams: TcxViewParams);
|
|
begin
|
|
with ACanvas do
|
|
begin
|
|
Font := AViewParams.Font;
|
|
Font.Color := AViewParams.TextColor;
|
|
Brush.Color := AViewParams.Color;
|
|
end;
|
|
end;
|
|
|
|
procedure cxCopyImage(ASource, ADest: TBitmap;
|
|
const ASrcOffset, ADstOffset: TPoint; const ARect: TRect);
|
|
var
|
|
ADstRect, ASrcRect: TRect;
|
|
begin
|
|
ADstRect := ARect;
|
|
ASrcRect := ARect;
|
|
OffsetRect(ASrcRect, ASrcOffset.X, ASrcOffset.Y);
|
|
OffsetRect(ADstRect, ADstOffset.X, ADstOffset.Y);
|
|
ADest.Canvas.CopyRect(ASrcRect, ASource.Canvas, ADstRect);
|
|
end;
|
|
|
|
procedure cxCopyImage(ASource, ADest: TCanvas;
|
|
const ASrcOffset, ADstOffset: TPoint; const ARect: TRect);
|
|
var
|
|
ADstRect, ASrcRect: TRect;
|
|
begin
|
|
ADstRect := ARect;
|
|
ASrcRect := ARect;
|
|
OffsetRect(ASrcRect, ASrcOffset.X, ASrcOffset.Y);
|
|
OffsetRect(ADstRect, ADstOffset.X, ADstOffset.Y);
|
|
ADest.CopyRect(ADstRect, ASource, ASrcRect);
|
|
end;
|
|
|
|
procedure cxDrawArrows(ACanvas: TCanvas; const ARect: TRect;
|
|
ASide: TcxBorder; AColor: TColor; APenColor: TColor = clDefault);
|
|
type
|
|
TArrowPolygon = array[0..6] of TPoint;
|
|
var
|
|
ArrowRgns: array[0..1, 0..6, 0..1] of Integer;
|
|
BaseLine: array[0..1, 0..1] of Integer;
|
|
I, J, K: Integer;
|
|
begin
|
|
with ARect do
|
|
begin
|
|
BaseLine[0, 0] := Left;
|
|
BaseLine[0, 1] := Top;
|
|
BaseLine[1, 0] := Right;
|
|
BaseLine[1, 1] := Bottom;
|
|
end;
|
|
if ASide in [bLeft, bBottom] then
|
|
begin
|
|
BaseLine[Byte(ASide = bLeft), 0] := ARect.Left;
|
|
BaseLine[Byte(ASide = bLeft), 1] := ARect.Bottom;
|
|
end
|
|
else
|
|
begin
|
|
BaseLine[Byte(ASide = bTop), 0] := ARect.Right;
|
|
BaseLine[Byte(ASide = bTop), 1] := ARect.Top;
|
|
end;
|
|
Move(BaseRgns[Byte(ASide in [bTop, bBottom]) shl 1], ArrowRgns, SizeOf(ArrowRgns));
|
|
for I := 0 to 1 do
|
|
for J := 0 to 6 do
|
|
for K := 0 to 1 do
|
|
Inc(ArrowRgns[I, J, K], BaseLine[I, K]);
|
|
ACanvas.Brush.Color := AColor;
|
|
if APenColor = clDefault then
|
|
ACanvas.Pen.Color := $FFFFFF xor ColorToRgb(AColor)
|
|
else
|
|
ACanvas.Pen.Color := APenColor;
|
|
for I := 0 to 1 do
|
|
ACanvas.Polygon(TArrowPolygon(ArrowRgns[I]));
|
|
end;
|
|
|
|
procedure cxFillHalfToneRect(
|
|
Canvas: TCanvas; const ARect: TRect; ABkColor, AColor: TColor);
|
|
begin
|
|
with Canvas do
|
|
begin
|
|
ABkColor := SetBkColor(Handle, ColorToRgb(ABkColor));
|
|
AColor := SetTextColor(Handle, ColorToRgb(AColor));
|
|
Windows.FillRect(Handle, ARect, cxHalfToneBrush.Handle);
|
|
SetBkColor(Handle, ABkColor);
|
|
SetTextColor(Handle, AColor);
|
|
end;
|
|
end;
|
|
|
|
procedure cxSetCanvasOrg(ACanvas: TCanvas; var AOrg: TRect);
|
|
begin
|
|
with AOrg do
|
|
SetWindowOrgEx(ACanvas.Handle, Left, Top, @TopLeft);
|
|
end;
|
|
|
|
function cxGetTextExtentPoint32(ADC: THandle; const AText: string; out ASize: TSize; ACharCount: Integer = -1): Boolean;
|
|
begin
|
|
if ACharCount = -1 then
|
|
ACharCount := Length(AText);
|
|
Result := GetTextExtentPoint32(ADC, PChar(AText), ACharCount, ASize);
|
|
end;
|
|
|
|
type
|
|
TcxPosition = record
|
|
Start: Integer;
|
|
Finish: Integer;
|
|
end;
|
|
|
|
procedure cxGetTextLines(const AText: string; ACanvas: TcxCanvas; const ARect: TRect; ALines: TStrings);
|
|
|
|
procedure GetNextWordPos(const AText: string; ALength: Integer; const ACurrentWord: TcxPosition; var ANextWord: TcxPosition);
|
|
|
|
function IsDelimiter(AIndex: Integer): Boolean;
|
|
begin
|
|
Result := (cxStrCharLength(AText, AIndex) = 1) and (AText[AIndex] <= ' ');
|
|
end;
|
|
|
|
function IsDoubleDelimiter(AIndex: Integer): Boolean;
|
|
begin
|
|
Result := (AIndex > 1) and IsDelimiter(AIndex) and IsDelimiter(cxPrevCharPos(AText, AIndex));
|
|
end;
|
|
|
|
function IsWordStart(AIndex: Integer): Boolean;
|
|
begin
|
|
Result := not IsDelimiter(AIndex);
|
|
end;
|
|
|
|
function IsWordEnd(AIndex: Integer): Boolean;
|
|
begin
|
|
Result := {SysLocale.FarEast and (cxStrCharLength(AText, AIndex) > 1) or }IsDelimiter(AIndex);
|
|
end;
|
|
|
|
var
|
|
ACharPos: Integer;
|
|
begin
|
|
ANextWord.Start := ACurrentWord.Finish + 1;
|
|
|
|
while (ANextWord.Start < ALength) and not IsWordStart(ANextWord.Start) and not IsDoubleDelimiter(ANextWord.Start) do
|
|
ANextWord.Start := cxNextCharPos(AText, ANextWord.Start);
|
|
ACharPos := ANextWord.Start;
|
|
while (ACharPos + 1 <= ALength) and not IsWordEnd(cxNextCharPos(AText, ACharPos)) and not IsDoubleDelimiter(ACharPos) do
|
|
ACharPos := cxNextCharPos(AText, ACharPos);
|
|
ANextWord.Finish := ACharPos + cxStrCharLength(AText, ACharPos) - 1;
|
|
end;
|
|
|
|
var
|
|
ADrawText: string;
|
|
ACurrentWord, ANextWord: TcxPosition;
|
|
ALineStart, ALength, ARectWidth: Integer;
|
|
begin
|
|
ARectWidth := cxRectWidth(ARect);
|
|
ACurrentWord.Finish := 0;
|
|
ALineStart := 1;
|
|
ALength := Length(AText);
|
|
repeat
|
|
GetNextWordPos(AText, ALength, ACurrentWord, ANextWord);
|
|
|
|
ADrawText := Copy(AText, ALineStart, ANextWord.Finish - ALineStart + 1);
|
|
if cxTextSize(ACanvas.Handle, ADrawText).cx > ARectWidth then
|
|
begin
|
|
ALines.Add(Copy(AText, ALineStart, ACurrentWord.Finish - ALineStart + 1));
|
|
ALineStart := ANextWord.Start;
|
|
end;
|
|
ACurrentWord := ANextWord;
|
|
until ACurrentWord.Finish >= ALength;
|
|
ALines.Add(Copy(AText, ALineStart, ALength));
|
|
end;
|
|
|
|
function cxDrawText(ADC: THandle; const AText: string; var ARect: TRect; AFormat: UINT; ACharCount: Integer = - 1): Integer;
|
|
begin
|
|
Result := Windows.DrawText(ADC, PChar(AText), ACharCount, ARect, AFormat);
|
|
end;
|
|
|
|
function cxExtTextOut(ADC: THandle; const AText: string; const APoint: TPoint;
|
|
const ARect: TRect; AOptions: UINT; ACharCount: Integer = -1): Boolean;
|
|
begin
|
|
if ACharCount = -1 then
|
|
ACharCount := Length(AText);
|
|
Result := ExtTextOut(ADC, APoint.X, APoint.Y, AOptions,
|
|
@ARect, PChar(AText), ACharCount, nil);
|
|
end;
|
|
|
|
function cxExtTextOut(ADC: THandle; const AText: string; const APoint: TPoint;
|
|
AOptions: UINT; ACharCount: Integer = -1): Boolean; overload;
|
|
begin
|
|
if ACharCount = -1 then
|
|
ACharCount := Length(AText);
|
|
Result := ExtTextOut(ADC, APoint.X, APoint.Y, AOptions,
|
|
nil, PChar(AText), ACharCount, nil);
|
|
end;
|
|
|
|
procedure cxInvalidateRect(AHandle: THandle; const ARect: TRect; AEraseBackground: Boolean = True);
|
|
begin
|
|
InvalidateRect(AHandle, @ARect, AEraseBackground);
|
|
end;
|
|
|
|
procedure cxInvalidateRect(AHandle: THandle; AEraseBackground: Boolean = True);
|
|
begin
|
|
InvalidateRect(AHandle, nil, AEraseBackground);
|
|
end;
|
|
|
|
function cxTextHeight(AFont: TFont; const S: string = 'Wg'; AFontSize: Integer = 0): Integer;
|
|
begin
|
|
Result := cxTextExtent(AFont, S, AFontSize).cy;
|
|
end;
|
|
|
|
function cxTextWidth(AFont: TFont; const S: string; AFontSize: Integer = 0): Integer;
|
|
begin
|
|
Result := cxTextExtent(AFont, S, AFontSize).cx;
|
|
end;
|
|
|
|
function cxTextExtent(AFont: TFont; const S: string; AFontSize: Integer = 0): TSize;
|
|
begin
|
|
with cxScreenCanvas do
|
|
begin
|
|
Font.Assign(AFont);
|
|
if AFontSize <> 0 then Font.Size := AFontSize;
|
|
Result := TextExtent(S);
|
|
end;
|
|
end;
|
|
|
|
function cxTextSize(ADC: THandle; const AText: string): TSize; // differs from cxTextExtent
|
|
var
|
|
ARect: TRect;
|
|
begin
|
|
ARect := cxGetTextRect(ADC, AText, 1);
|
|
Result := Size(ARect.Right, ARect.Bottom);
|
|
end;
|
|
|
|
function cxGetTextRect(ADC: THandle; const AText: string; ARowCount: Integer; AReturnMaxRectHeight: Boolean = False): TRect;
|
|
|
|
const
|
|
DT_NOFULLWIDTHCHARBREAK = $80000;
|
|
ASingleLineTextFlag = DT_SINGLELINE or DT_CALCRECT;
|
|
AMultiLineTextFlag = DT_WORDBREAK or DT_NOFULLWIDTHCHARBREAK or DT_CALCRECT;
|
|
|
|
function GetMaxWidth: Integer;
|
|
var
|
|
R: TRect;
|
|
begin
|
|
R := cxEmptyRect;
|
|
cxDrawText(ADC, AText, R, ASingleLineTextFlag);
|
|
Result := R.Right;
|
|
end;
|
|
|
|
function GetMinWidth: Integer;
|
|
var
|
|
R: TRect;
|
|
begin
|
|
R := Rect(0, 0, 1, 1);
|
|
cxDrawText(ADC, AText, R, AMultiLineTextFlag);
|
|
Result := R.Right;
|
|
end;
|
|
|
|
function GetTextSize(AWidth: Integer): TRect;
|
|
begin
|
|
Result := Rect(0, 0, AWidth, 1);
|
|
cxDrawText(ADC, AText, Result, AMultiLineTextFlag);
|
|
end;
|
|
|
|
var
|
|
AMaxTextHeight, AMaxWidth, AMinWidth, AWidth: Integer;
|
|
begin
|
|
Result := cxEmptyRect;
|
|
if ARowCount <= 0 then
|
|
Exit;
|
|
if ARowCount = 1 then
|
|
cxDrawText(ADC, AText, Result, ASingleLineTextFlag)
|
|
else
|
|
begin
|
|
AMaxTextHeight := cxTextSize(ADC, 'Wg').cy * ARowCount;
|
|
AMinWidth := GetMinWidth;
|
|
AMaxWidth := GetMaxWidth;
|
|
AWidth := (AMinWidth + AMaxWidth) div 2;
|
|
while AMaxWidth - AMinWidth > 1 do
|
|
begin
|
|
if GetTextSize(AWidth).Bottom > AMaxTextHeight then
|
|
AMinWidth := AWidth
|
|
else
|
|
AMaxWidth := AWidth;
|
|
AWidth := (AMinWidth + AMaxWidth) div 2;
|
|
end;
|
|
Result := GetTextSize(AMinWidth);
|
|
if Result.Bottom > AMaxTextHeight then
|
|
Result := GetTextSize(AMaxWidth);
|
|
if AReturnMaxRectHeight then
|
|
Result.Bottom := AMaxTextHeight;
|
|
end;
|
|
end;
|
|
|
|
function cxGetTextRect(AFont: TFont; const AText: string; ARowCount: Integer): TRect;
|
|
begin
|
|
cxScreenCanvas.Font := AFont;
|
|
Result := cxGetTextRect(cxScreenCanvas.Handle, AText, ARowCount);
|
|
end;
|
|
|
|
function cxGetScreenPixelsPerInch(AHorizontal: Boolean): Integer;
|
|
const
|
|
ADirectionMap: array [Boolean] of DWORD = (LOGPIXELSY, LOGPIXELSX);
|
|
begin
|
|
Result := GetDeviceCaps(cxScreenCanvas.Handle, ADirectionMap[AHorizontal]);
|
|
end;
|
|
|
|
function cxGetBitmapData(ABitmapHandle: HBITMAP; out ABitmapData: Windows.TBitmap): Boolean;
|
|
begin
|
|
Result := GetObject(ABitmapHandle, SizeOf(Windows.TBitmap), @ABitmapData) <> 0;
|
|
end;
|
|
|
|
function cxGetBrushData(ABrushHandle: HBRUSH; out ALogBrush: TLogBrush): Boolean;
|
|
begin
|
|
Result := GetObject(ABrushHandle, SizeOf(TLogBrush), @ALogBrush) <> 0;
|
|
end;
|
|
|
|
function cxGetBrushData(ABrushHandle: HBRUSH): TLogBrush;
|
|
begin
|
|
cxGetBrushData(ABrushHandle, Result);
|
|
end;
|
|
|
|
function cxGetFontData(AFontHandle: HFONT; out ALogFont: TLogFont): Boolean;
|
|
begin
|
|
Result := GetObject(AFontHandle, SizeOf(TLogFont), @ALogFont) <> 0;
|
|
end;
|
|
|
|
function cxGetPenData(APenHandle: HPEN; out ALogPen: TLogPen): Boolean;
|
|
begin
|
|
Result := GetObject(APenHandle, SizeOf(TLogPen), @ALogPen) <> 0;
|
|
end;
|
|
|
|
function cxGetWritingDirection(AFontCharset: TFontCharset; const AText: string): TCanvasOrientation;
|
|
|
|
function IsStandardASCIIChar: Boolean;
|
|
begin
|
|
Result := (Length(AText) > 0) and (cxStrCharLength(AText) = 1) and (Integer(AText[1]) < 128);
|
|
end;
|
|
|
|
begin
|
|
if AFontCharset = DEFAULT_CHARSET then
|
|
AFontCharset := GetDefFontCharset;
|
|
if not IsStandardASCIIChar and (AFontCharset in [ARABIC_CHARSET, CHINESEBIG5_CHARSET, GB2312_CHARSET]) then
|
|
Result := coRightToLeft
|
|
else
|
|
Result := coLeftToRight;
|
|
end;
|
|
|
|
procedure cxDrawThemeParentBackground(AControl: TWinControl; ACanvas: TcxCanvas; const ARect: TRect);
|
|
begin
|
|
if AControl.Parent.DoubleBuffered or not IsThemeLibraryLoaded then
|
|
cxDrawTransparentControlBackground(AControl, ACanvas, ARect, False)
|
|
else
|
|
DrawThemeParentBackground(AControl.Handle, ACanvas.Handle, ARect);
|
|
end;
|
|
|
|
procedure cxDrawThemeParentBackground(AControl: TWinControl; ACanvas: TCanvas; const ARect: TRect);
|
|
var
|
|
AcxCanvas: TcxCanvas;
|
|
begin
|
|
AcxCanvas := TcxCanvas.Create(ACanvas);
|
|
try
|
|
cxDrawThemeParentBackground(AControl, AcxCanvas, ARect);
|
|
finally
|
|
AcxCanvas.Free;
|
|
end;
|
|
end;
|
|
|
|
procedure cxDrawTransparentControlBackground(AControl: TWinControl;
|
|
ACanvas: TcxCanvas; ARect: TRect; APaintParentWithChildren: Boolean = True);
|
|
|
|
procedure cxPaintControlTo(ADrawControl: TWinControl;
|
|
AOffsetX, AOffsetY: Integer; ADrawRect: TRect);
|
|
|
|
procedure DrawEdgesAndBorders;
|
|
var
|
|
AEdgeFlags, ABorderFlags: Integer;
|
|
ABorderRect: TRect;
|
|
begin
|
|
ABorderFlags := 0;
|
|
AEdgeFlags := 0;
|
|
if GetWindowLong(ADrawControl.Handle, GWL_EXSTYLE) and WS_EX_CLIENTEDGE <> 0 then
|
|
begin
|
|
AEdgeFlags := EDGE_SUNKEN;
|
|
ABorderFlags := BF_RECT or BF_ADJUST
|
|
end
|
|
else
|
|
if GetWindowLong(ADrawControl.Handle, GWL_STYLE) and WS_BORDER <> 0 then
|
|
begin
|
|
AEdgeFlags := BDR_OUTER;
|
|
ABorderFlags := BF_RECT or BF_ADJUST or BF_MONO;
|
|
end;
|
|
if ABorderFlags <> 0 then
|
|
begin
|
|
ABorderRect := Rect(0, 0, ADrawControl.Width, ADrawControl.Height);
|
|
DrawEdge(ACanvas.Handle, ABorderRect, AEdgeFlags, ABorderFlags);
|
|
ACanvas.SetClipRegion(TcxRegion.Create(ABorderRect), roIntersect);
|
|
MoveWindowOrg(ACanvas.Handle, ABorderRect.Left, ABorderRect.Top);
|
|
end;
|
|
end;
|
|
|
|
var
|
|
I: Integer;
|
|
AChildControl: TControl;
|
|
begin
|
|
ACanvas.SaveDC;
|
|
try
|
|
MoveWindowOrg(ACanvas.Handle, AOffsetX, AOffsetY);
|
|
if not RectVisible(ACanvas.Handle, ADrawRect) then Exit;
|
|
|
|
ADrawControl.ControlState := ADrawControl.ControlState + [csPaintCopy];
|
|
try
|
|
if ADrawControl <> AControl.Parent then
|
|
DrawEdgesAndBorders;
|
|
ACanvas.Canvas.Lock;
|
|
try
|
|
ADrawControl.Perform(WM_ERASEBKGND, ACanvas.Handle, ACanvas.Handle);
|
|
ADrawControl.Perform(WM_PAINT, ACanvas.Handle, 0);
|
|
finally
|
|
ACanvas.Canvas.Unlock;
|
|
end;
|
|
if APaintParentWithChildren then
|
|
for I := 0 to ADrawControl.ControlCount - 1 do
|
|
begin
|
|
AChildControl := ADrawControl.Controls[I];
|
|
if AChildControl = AControl then
|
|
Break;
|
|
if (AChildControl is TWinControl) and TWinControl(AChildControl).Visible then
|
|
cxPaintControlTo(TWinControl(AChildControl), AChildControl.Left, AChildControl.Top, Rect(0, 0, AChildControl.Width, AChildControl.Height));
|
|
end;
|
|
finally
|
|
ADrawControl.ControlState := ADrawControl.ControlState - [csPaintCopy];
|
|
end;
|
|
finally
|
|
ACanvas.RestoreDC;
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
if AControl.Parent <> nil then
|
|
begin
|
|
OffsetRect(ARect, AControl.Left, AControl.Top);
|
|
cxPaintControlTo(AControl.Parent, -ARect.Left, -ARect.Top, ARect);
|
|
// wrong cxLabel painting cxPaintControlTo(AControl.Parent, -AControl.Left, -AControl.Top, ARect);
|
|
end;
|
|
end;
|
|
|
|
procedure cxDrawTransparentControlBackground(AControl: TWinControl;
|
|
ACanvas: TCanvas; const ARect: TRect; APaintParentWithChildren: Boolean = True);
|
|
var
|
|
AcxCanvas: TcxCanvas;
|
|
begin
|
|
AcxCanvas := TcxCanvas.Create(ACanvas);
|
|
try
|
|
cxDrawTransparentControlBackground(AControl, AcxCanvas, ARect, APaintParentWithChildren);
|
|
finally
|
|
AcxCanvas.Free;
|
|
end;
|
|
end;
|
|
|
|
function cxScreenCanvas: TcxScreenCanvas;
|
|
begin
|
|
if ScreenCanvas = nil then
|
|
ScreenCanvas := TcxScreenCanvas.Create;
|
|
Result := ScreenCanvas;
|
|
end;
|
|
|
|
{ TcxRegion }
|
|
|
|
constructor TcxRegion.Create(AHandle: TcxRegionHandle);
|
|
begin
|
|
inherited Create;
|
|
FHandle := AHandle;
|
|
end;
|
|
|
|
constructor TcxRegion.Create(const ABounds: TRect);
|
|
var
|
|
AHandle: TcxRegionHandle;
|
|
begin
|
|
AHandle := CreateRectRgnIndirect(ABounds);
|
|
Create(AHandle);
|
|
end;
|
|
|
|
constructor TcxRegion.Create;
|
|
begin
|
|
Create(0, 0, 0, 0);
|
|
end;
|
|
|
|
constructor TcxRegion.Create(ALeft, ATop, ARight, ABottom: Integer);
|
|
begin
|
|
Create(Rect(ALeft, ATop, ARight, ABottom));
|
|
end;
|
|
|
|
destructor TcxRegion.Destroy;
|
|
begin
|
|
DestroyHandle;
|
|
inherited;
|
|
end;
|
|
|
|
function TcxRegion.GetIsEmpty: Boolean;
|
|
var
|
|
R: TRect;
|
|
begin
|
|
Result := GetRgnBox(FHandle, R) = NULLREGION;
|
|
end;
|
|
|
|
procedure TcxRegion.DestroyHandle;
|
|
begin
|
|
if FHandle <> 0 then
|
|
begin
|
|
DeleteObject(FHandle);
|
|
FHandle := 0;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxRegion.Combine(ARegion: TcxRegion; AOperation: TcxRegionOperation;
|
|
ADestroyRegion: Boolean = True);
|
|
const
|
|
Modes: array[TcxRegionOperation] of Integer = (RGN_COPY, RGN_OR, RGN_DIFF, RGN_AND);
|
|
begin
|
|
if AOperation = roSet then
|
|
CombineRgn(FHandle, ARegion.Handle, 0, Modes[AOperation])
|
|
else
|
|
CombineRgn(FHandle, FHandle, ARegion.Handle, Modes[AOperation]);
|
|
if ADestroyRegion then ARegion.Free;
|
|
end;
|
|
|
|
function TcxRegion.IsEqual(ARegion: TcxRegion): Boolean;
|
|
begin
|
|
Result := (ARegion <> nil) and ((IsEmpty and ARegion.IsEmpty) or IsEqual(ARegion.Handle));
|
|
end;
|
|
|
|
function TcxRegion.IsEqual(ARegionHandle: TcxRegionHandle): Boolean;
|
|
begin
|
|
Result := EqualRgn(Handle, ARegionHandle);
|
|
end;
|
|
|
|
procedure TcxRegion.Offset(DX, DY: Integer);
|
|
begin
|
|
OffsetRgn(FHandle, DX, DY);
|
|
end;
|
|
|
|
function TcxRegion.PtInRegion(const Pt: TPoint): Boolean;
|
|
begin
|
|
Result := Windows.PtInRegion(Handle, Pt.X, Pt.Y);
|
|
end;
|
|
|
|
function TcxRegion.PtInRegion(X, Y: Integer): Boolean;
|
|
begin
|
|
Result := PtInRegion(Point(X, Y));
|
|
end;
|
|
|
|
function TcxRegion.RectInRegion(const R: TRect): Boolean;
|
|
begin
|
|
Result := Windows.RectInRegion(Handle, R);
|
|
end;
|
|
|
|
function TcxRegion.RectInRegion(ALeft, ATop, ARight, ABottom: Integer): Boolean;
|
|
begin
|
|
Result := RectInRegion(Rect(ALeft, ATop, ARight, ABottom));
|
|
end;
|
|
|
|
{ TcxCanvas }
|
|
|
|
constructor TcxCanvas.Create(ACanvas: TCanvas);
|
|
begin
|
|
inherited Create;
|
|
FCanvas := ACanvas;
|
|
FSavedDCs := TList.Create;
|
|
FSavedRegions := TList.Create;
|
|
end;
|
|
|
|
destructor TcxCanvas.Destroy;
|
|
begin
|
|
FreeAndNil(FSavedRegions);
|
|
FreeAndNil(FSavedDCs);
|
|
inherited;
|
|
end;
|
|
|
|
function TcxCanvas.GetBrush: TBrush;
|
|
begin
|
|
Result := Canvas.Brush;
|
|
end;
|
|
|
|
function TcxCanvas.GetCopyMode: TCopyMode;
|
|
begin
|
|
Result := Canvas.CopyMode;
|
|
end;
|
|
|
|
function TcxCanvas.GetDCOrigin: TPoint;
|
|
var
|
|
AWindowOrg, AViewportOrg: TPoint;
|
|
begin
|
|
AWindowOrg := WindowOrg;
|
|
AViewportOrg := ViewportOrg;
|
|
Result := Point(AViewportOrg.X - AWindowOrg.X, AViewportOrg.Y - AWindowOrg.Y);
|
|
end;
|
|
|
|
function TcxCanvas.GetFont: TFont;
|
|
begin
|
|
Result := Canvas.Font;
|
|
end;
|
|
|
|
function TcxCanvas.GetHandle: HDC;
|
|
begin
|
|
Result := Canvas.Handle;
|
|
end;
|
|
|
|
function TcxCanvas.GetPen: TPen;
|
|
begin
|
|
Result := Canvas.Pen;
|
|
end;
|
|
|
|
function TcxCanvas.GetViewportOrg: TPoint;
|
|
begin
|
|
GetViewportOrgEx(Handle, Result);
|
|
end;
|
|
|
|
function TcxCanvas.GetWindowOrg: TPoint;
|
|
begin
|
|
GetWindowOrgEx(Handle, Result);
|
|
end;
|
|
|
|
procedure TcxCanvas.SetBrush(Value: TBrush);
|
|
begin
|
|
Canvas.Brush := Value;
|
|
end;
|
|
|
|
procedure TcxCanvas.SetCopyMode(Value: TCopyMode);
|
|
begin
|
|
Canvas.CopyMode := Value;
|
|
end;
|
|
|
|
procedure TcxCanvas.SetFont(Value: TFont);
|
|
begin
|
|
Canvas.Font := Value;
|
|
end;
|
|
|
|
procedure TcxCanvas.SetPen(Value: TPen);
|
|
begin
|
|
Canvas.Pen := Value;
|
|
end;
|
|
|
|
procedure TcxCanvas.SetPixel(X, Y: Integer; Value: TColor);
|
|
begin
|
|
Canvas.Pixels[X, Y] := Value;
|
|
end;
|
|
|
|
procedure TcxCanvas.SetViewportOrg(const P: TPoint);
|
|
begin
|
|
SetViewportOrgEx(Handle, P.X, P.Y, nil);
|
|
end;
|
|
|
|
procedure TcxCanvas.SetWindowOrg(const P: TPoint);
|
|
begin
|
|
SetWindowOrgEx(Handle, P.X, P.Y, nil);
|
|
end;
|
|
|
|
procedure TcxCanvas.SynchronizeObjects(ADC: THandle);
|
|
|
|
procedure AssignFont;
|
|
var
|
|
ALogFont: TLogFont;
|
|
begin
|
|
cxGetFontData(GetCurrentObject(ADC, OBJ_FONT), ALogFont);
|
|
Font.Handle := CreateFontIndirect(ALogFont);
|
|
Font.Color := GetTextColor(ADC);
|
|
end;
|
|
|
|
procedure AssignBrush;
|
|
|
|
function GetBrushStyle(const ALogBrush: TLogBrush): TBrushStyle;
|
|
begin
|
|
Result := bsSolid;
|
|
case ALogBrush.lbStyle of // TODO lbStyle = BS_PATTERN
|
|
BS_HATCHED:
|
|
case ALogBrush.lbHatch of
|
|
HS_BDIAGONAL: Result := bsBDiagonal;
|
|
HS_CROSS: Result := bsCross;
|
|
HS_DIAGCROSS: Result := bsDiagCross;
|
|
HS_FDIAGONAL: Result := bsFDiagonal;
|
|
HS_HORIZONTAL: Result := bsHorizontal;
|
|
HS_VERTICAL: Result := bsVertical;
|
|
end;
|
|
BS_HOLLOW:
|
|
Result := bsClear;
|
|
end;
|
|
end;
|
|
|
|
var
|
|
ALogBrush: TLogBrush;
|
|
begin
|
|
cxGetBrushData(GetCurrentObject(ADC, OBJ_BRUSH), ALogBrush);
|
|
Brush.Handle := CreateBrushIndirect(ALogBrush);
|
|
Brush.Color := ALogBrush.lbColor; // required: set Color before Style
|
|
Brush.Style := GetBrushStyle(ALogBrush)
|
|
end;
|
|
|
|
procedure AssignPen;
|
|
|
|
function GetPenStyle(const ALogPen: TLogPen): TPenStyle;
|
|
begin
|
|
Result := TPenStyle(ALogPen.lopnStyle);
|
|
end;
|
|
|
|
function GetPenMode: TPenMode;
|
|
const
|
|
PenModes: array[TPenMode] of Integer =
|
|
(R2_BLACK, R2_WHITE, R2_NOP, R2_NOT, R2_COPYPEN, R2_NOTCOPYPEN, R2_MERGEPENNOT,
|
|
R2_MASKPENNOT, R2_MERGENOTPEN, R2_MASKNOTPEN, R2_MERGEPEN, R2_NOTMERGEPEN,
|
|
R2_MASKPEN, R2_NOTMASKPEN, R2_XORPEN, R2_NOTXORPEN);
|
|
var
|
|
I: TPenMode;
|
|
ADrawMode: Integer;
|
|
begin
|
|
Result := pmCopy;
|
|
ADrawMode := GetROP2(ADC);
|
|
for I := Low(TPenMode) to High(TPenMode) do
|
|
if PenModes[I] = ADrawMode then
|
|
Result := I;
|
|
end;
|
|
|
|
var
|
|
ALogPen: TLogPen;
|
|
begin
|
|
cxGetPenData(GetCurrentObject(ADC, OBJ_PEN), ALogPen);
|
|
Pen.Handle := CreatePenIndirect(ALogPen);
|
|
Pen.Color := ALogPen.lopnColor;
|
|
Pen.Style := GetPenStyle(ALogPen);
|
|
Pen.Mode := GetPenMode;
|
|
Pen.Width := ALogPen.lopnWidth.X;
|
|
end;
|
|
|
|
begin
|
|
AssignFont;
|
|
AssignBrush;
|
|
AssignPen;
|
|
end;
|
|
|
|
procedure TcxCanvas.AlignMultiLineTextRectVertically(var R: TRect;
|
|
const AText: string; AAlignmentVert: TcxAlignmentVert;
|
|
AWordBreak, AShowPrefix: Boolean; AEnabled: Boolean = True;
|
|
ADontBreakChars: Boolean = False);
|
|
var
|
|
ASizeR: TRect;
|
|
AFlags: Integer;
|
|
begin
|
|
if AAlignmentVert = vaTop then Exit;
|
|
ASizeR := Rect(0, 0, R.Right - R.Left - Ord(not AEnabled), 0);
|
|
AFlags := cxAlignLeft or cxAlignTop;
|
|
if AWordBreak then
|
|
AFlags := AFlags or cxWordBreak;
|
|
if AShowPrefix then
|
|
AFlags := AFlags or cxShowPrefix;
|
|
if ADontBreakChars then
|
|
AFlags := AFlags or cxDontBreakChars;
|
|
TextExtent(AText, ASizeR, AFlags);
|
|
case AAlignmentVert of
|
|
vaCenter:
|
|
R.Top := (R.Top + R.Bottom - (ASizeR.Bottom - ASizeR.Top)) div 2;
|
|
vaBottom:
|
|
R.Top := R.Bottom - (ASizeR.Bottom - ASizeR.Top + Ord(not AEnabled));
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.CopyRect(const Dest: TRect; ACanvas: TCanvas;
|
|
const Source: TRect);
|
|
begin
|
|
Canvas.CopyRect(Dest, ACanvas, Source);
|
|
end;
|
|
|
|
procedure TcxCanvas.Draw(X, Y: Integer; Graphic: TGraphic);
|
|
begin
|
|
Canvas.Draw(X, Y, Graphic);
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawComplexFrame(const R: TRect;
|
|
ALeftTopColor, ARightBottomColor: TColor; ABorders: TcxBorders;
|
|
ABorderWidth: Integer);
|
|
var
|
|
ABorder: TcxBorder;
|
|
|
|
function GetBorderColor: TColor;
|
|
begin
|
|
if ABorder in [bLeft, bTop] then
|
|
Result := ALeftTopColor
|
|
else
|
|
Result := ARightBottomColor;
|
|
end;
|
|
|
|
function GetBorderBounds: TRect;
|
|
begin
|
|
Result := R;
|
|
with Result do
|
|
case ABorder of
|
|
bLeft:
|
|
Right := Left + ABorderWidth;
|
|
bTop:
|
|
Bottom := Top + ABorderWidth;
|
|
bRight:
|
|
Left := Right - ABorderWidth;
|
|
bBottom:
|
|
Top := Bottom - ABorderWidth;
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
for ABorder := Low(ABorder) to High(ABorder) do
|
|
if ABorder in ABorders then
|
|
begin
|
|
SetBrushColor(GetBorderColor);
|
|
FillRect(GetBorderBounds);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawEdge(const R: TRect; ASunken, AOuter: Boolean;
|
|
ABorders: TcxBorders);
|
|
begin
|
|
if ASunken then
|
|
if AOuter then
|
|
DrawComplexFrame(R, clBtnShadow, clBtnHighlight, ABorders)
|
|
else
|
|
DrawComplexFrame(R, cl3DDkShadow{clBtnText}, cl3DLight{clBtnFace}, ABorders)
|
|
else
|
|
if AOuter then
|
|
DrawComplexFrame(R, cl3DLight{clBtnFace}, cl3DDkShadow{clBtnText}, ABorders)
|
|
else
|
|
DrawComplexFrame(R, clBtnHighlight, clBtnShadow, ABorders);
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawFocusRect(const R: TRect);
|
|
begin
|
|
SetBrushColor(clWhite);
|
|
Canvas.Font.Color := clBlack;
|
|
TCanvasAccess(Canvas).RequiredState([csFontValid]);
|
|
Canvas.DrawFocusRect(R);
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawGlyph(X, Y: Integer; AGlyph: TBitmap; AEnabled: Boolean = True;
|
|
ABackgroundColor: TColor = clNone{; ATempCanvas: TCanvas = nil});
|
|
var
|
|
APrevBrushStyle: TBrushStyle;
|
|
AImageList: TImageList;
|
|
ABitmap: TBitmap;
|
|
begin
|
|
if AEnabled {and (ATempCanvas = nil)} then
|
|
begin
|
|
APrevBrushStyle := Brush.Style;
|
|
if ABackgroundColor = clNone then
|
|
Brush.Style := bsClear
|
|
else
|
|
Brush.Color := ABackgroundColor;
|
|
Canvas.BrushCopy(Bounds(X, Y, AGlyph.Width, AGlyph.Height), AGlyph,
|
|
Rect(0, 0, AGlyph.Width, AGlyph.Height), AGlyph.TransparentColor);
|
|
Brush.Style := APrevBrushStyle;
|
|
Exit;
|
|
end;
|
|
|
|
AImageList := nil;
|
|
ABitmap := nil;
|
|
try
|
|
AImageList := TImageList.Create(nil);
|
|
AImageList.Width := AGlyph.Width;
|
|
AImageList.Height := AGlyph.Height;
|
|
if ABackgroundColor <> clNone then
|
|
//if ATempCanvas = nil then
|
|
begin
|
|
ABitmap := TBitmap.Create;
|
|
ABitmap.Width := AImageList.Width;
|
|
ABitmap.Height := AImageList.Height;
|
|
with ABitmap.Canvas do
|
|
begin
|
|
Brush.Color := ABackgroundColor;
|
|
FillRect(Rect(0, 0, ABitmap.Width, ABitmap.Height));
|
|
end;
|
|
end
|
|
{else
|
|
with ATempCanvas do
|
|
begin
|
|
Brush.Color := ABackgroundColor;
|
|
FillRect(Bounds(X, Y, AGlyph.Width, AGlyph.Height));
|
|
end};
|
|
|
|
if AGlyph.TransparentMode = tmFixed then
|
|
AImageList.AddMasked(AGlyph, AGlyph.TransparentColor)
|
|
else
|
|
AImageList.AddMasked(AGlyph, clDefault);
|
|
|
|
if ABitmap <> nil then
|
|
begin
|
|
AImageList.Draw(ABitmap.Canvas, 0, 0, 0, AEnabled); // ??? itMask TODO
|
|
Draw(X, Y, ABitmap);
|
|
end
|
|
else
|
|
(*if ATempCanvas <> nil then
|
|
AImageList.Draw(ATempCanvas, X, Y, 0, AEnabled) // ??? itMask TODO
|
|
else*)
|
|
AImageList.Draw(Canvas, X, Y, 0, AEnabled); // ??? itMask TODO
|
|
finally
|
|
ABitmap.Free;
|
|
AImageList.Free;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawImage(Images: TCustomImageList; X, Y, Index: Integer;
|
|
Enabled: Boolean = True);
|
|
begin
|
|
if (0 <= Index) and (Index < Images.Count) then
|
|
begin
|
|
SaveDC;
|
|
Images.Draw(Canvas, X, Y, Index, Enabled);
|
|
RestoreDC;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawText(const Text: string; R: TRect; Flags: Integer;
|
|
Enabled: Boolean);
|
|
var
|
|
AUseDrawText: Boolean;
|
|
PrevBrushStyle: TBrushStyle;
|
|
PrevFontColor: TColor;
|
|
|
|
procedure ProcessFlags;
|
|
var
|
|
ASize: TSize;
|
|
AAlignmentVert: TcxAlignmentVert;
|
|
begin
|
|
ASize := TextExtent(Text);
|
|
if (ASize.cx <= R.Right - R.Left) and (ASize.cy <= R.Bottom - R.Top) then
|
|
Flags := Flags or cxDontClip;
|
|
if AUseDrawText then
|
|
begin
|
|
if (Flags and cxSingleLine = 0) and (Flags and (cxAlignBottom or cxAlignVCenter) <> 0) then
|
|
begin
|
|
if Flags and cxAlignBottom <> 0 then
|
|
AAlignmentVert := vaBottom
|
|
else
|
|
AAlignmentVert := vaCenter;
|
|
AlignMultiLineTextRectVertically(R, Text, AAlignmentVert,
|
|
cxWordBreak and Flags <> 0, cxShowPrefix and Flags <> 0, Enabled,
|
|
cxDontBreakChars and Flags <> 0);
|
|
end;
|
|
Flags := cxFlagsToDTFlags(Flags);
|
|
end
|
|
else
|
|
begin
|
|
if ASize.cx < R.Right - R.Left then
|
|
case Flags and (cxAlignLeft or cxAlignRight or cxAlignHCenter) of
|
|
cxAlignRight:
|
|
R.Left := R.Right - ASize.cx - Ord(not Enabled);
|
|
cxAlignHCenter:
|
|
R.Left := (R.Left + R.Right - ASize.cx) div 2;
|
|
end;
|
|
if ASize.cy < R.Bottom - R.Top then
|
|
case Flags and (cxAlignTop or cxAlignBottom or cxAlignVCenter) of
|
|
cxAlignBottom:
|
|
R.Top := R.Bottom - ASize.cy - Ord(not Enabled);
|
|
cxAlignVCenter:
|
|
R.Top := (R.Top + R.Bottom - ASize.cy) div 2;
|
|
end;
|
|
if Flags and cxDontClip = 0 then
|
|
Flags := ETO_CLIPPED
|
|
else
|
|
Flags := 0;
|
|
end;
|
|
end;
|
|
|
|
procedure DoDrawText;
|
|
begin
|
|
if AUseDrawText then
|
|
cxDrawText(Canvas.Handle, Text, R, Flags)
|
|
else
|
|
cxExtTextOut(Canvas.Handle, Text, R.TopLeft, R, Flags);
|
|
end;
|
|
|
|
begin
|
|
if Length(Text) = 0 then Exit;
|
|
AUseDrawText := (Flags and cxSingleLine = 0) or
|
|
(Flags and (cxShowPrefix or cxShowEndEllipsis or cxShowPathEllipsis) <> 0);
|
|
ProcessFlags;
|
|
PrevBrushStyle := Brush.Style;
|
|
PrevFontColor := Font.Color;
|
|
if not Enabled then
|
|
begin
|
|
with R do
|
|
begin
|
|
Inc(Left);
|
|
Inc(Top);
|
|
end;
|
|
Brush.Style := bsClear;
|
|
Font.Color := clBtnHighlight;
|
|
DoDrawText;
|
|
OffsetRect(R, -1, -1);
|
|
Font.Color := clBtnShadow;
|
|
end;
|
|
DoDrawText;
|
|
if Brush.Style <> PrevBrushStyle then
|
|
Brush.Style := PrevBrushStyle;
|
|
Font.Color := PrevFontColor;
|
|
end;
|
|
|
|
procedure TcxCanvas.FillRect(const R: TRect; AColor: TColor);
|
|
begin
|
|
if AColor = clNone then Exit;
|
|
if AColor <> clDefault then
|
|
SetBrushColor(AColor);
|
|
Canvas.FillRect(R);
|
|
end;
|
|
|
|
procedure TcxCanvas.FillRect(const R: TRect; ABitmap: TBitmap = nil;
|
|
AExcludeRect: Boolean = False);
|
|
var
|
|
ABitmapSize, AOffset: TPoint;
|
|
AFirstCol, AFirstRow, ALastCol, ALastRow, I, J: Integer;
|
|
ABitmapRect, ACellRect: TRect;
|
|
begin
|
|
if IsRectEmpty(R) then Exit;
|
|
if not IsGlyphAssigned(ABitmap) then
|
|
Canvas.FillRect(R)
|
|
else
|
|
with ABitmapSize do
|
|
begin
|
|
X := ABitmap.Width;
|
|
Y := ABitmap.Height;
|
|
AFirstCol := R.Left div X;
|
|
AFirstRow := R.Top div Y;
|
|
ALastCol := R.Right div X - Ord(R.Right mod X = 0);
|
|
ALastRow := R.Bottom div Y - Ord(R.Bottom mod Y = 0);
|
|
for J := AFirstRow to ALastRow do
|
|
for I := AFirstCol to ALastCol do
|
|
begin
|
|
AOffset.X := I * X;
|
|
AOffset.Y := J * Y;
|
|
ACellRect := Bounds(AOffset.X, AOffset.Y, X, Y);
|
|
IntersectRect(ACellRect, ACellRect, R);
|
|
ABitmapRect := ACellRect;
|
|
OffsetRect(ABitmapRect, -AOffset.X, -AOffset.Y);
|
|
CopyRect(ACellRect, ABitmap.Canvas, ABitmapRect);
|
|
end;
|
|
end;
|
|
if AExcludeRect then
|
|
SetClipRegion(TcxRegion.Create(R), roSubtract);
|
|
end;
|
|
|
|
procedure TcxCanvas.FillRect(R: TRect; const AParams: TcxViewParams;
|
|
ABorders: TcxBorders = []; ABorderColor: TColor = clDefault;
|
|
ALineWidth: Integer = 1; AExcludeRect: Boolean = False);
|
|
begin
|
|
FrameRect(R, ABorderColor, ALineWidth, ABorders, AExcludeRect);
|
|
with R do
|
|
begin
|
|
if bLeft in ABorders then
|
|
Inc(Left, ALineWidth);
|
|
if bRight in ABorders then
|
|
Dec(Right, ALineWidth);
|
|
if bTop in ABorders then
|
|
Inc(Top, ALineWidth);
|
|
if bBottom in ABorders then
|
|
Dec(Bottom, ALineWidth);
|
|
end;
|
|
SetBrushColor(AParams.Color);
|
|
FillRect(R, AParams.Bitmap, AExcludeRect);
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawDesignSelection(ARect: TRect; AWidth: Integer = cxDesignSelectionWidth);
|
|
var
|
|
I: Integer;
|
|
begin
|
|
for I := 0 to AWidth - 1 do
|
|
begin
|
|
DrawFocusRect(ARect);
|
|
InflateRect(ARect, -1, -1);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawRegion(ARegion: TcxRegion; AContentColor: TColor = clDefault;
|
|
ABorderColor: TColor = clDefault; ABorderWidth: Integer = 1; ABorderHeight: Integer = 1);
|
|
begin
|
|
DrawRegion(ARegion.Handle, AContentColor, ABorderColor, ABorderWidth, ABorderHeight);
|
|
end;
|
|
|
|
procedure TcxCanvas.DrawRegion(ARegion: TcxRegionHandle; AContentColor: TColor = clDefault;
|
|
ABorderColor: TColor = clDefault; ABorderWidth: Integer = 1; ABorderHeight: Integer = 1);
|
|
begin
|
|
FillRegion(ARegion, AContentColor);
|
|
FrameRegion(ARegion, ABorderColor, ABorderWidth, ABorderHeight);
|
|
end;
|
|
|
|
procedure TcxCanvas.FillRegion(ARegion: TcxRegion; AColor: TColor = clDefault);
|
|
begin
|
|
FillRegion(ARegion.Handle, AColor);
|
|
end;
|
|
|
|
procedure TcxCanvas.FillRegion(ARegion: TcxRegionHandle; AColor: TColor = clDefault);
|
|
begin
|
|
SetBrushColor(AColor);
|
|
FillRgn(Handle, ARegion, Brush.Handle);
|
|
end;
|
|
|
|
procedure TcxCanvas.FlipHorizontally(ABitmap: TBitmap);
|
|
var
|
|
Bits: TRGBColors;
|
|
ARow, ACol, W, H, ARowStart: Integer;
|
|
AValue: TRGBQuad;
|
|
begin
|
|
W := ABitmap.Width;
|
|
H := ABitmap.Height;
|
|
|
|
Bits := GetBitmapBits(ABitmap, True);
|
|
ARowStart := 0;
|
|
for ARow := 0 to H - 1 do
|
|
begin
|
|
for ACol := 0 to (W - 1) div 2 do
|
|
begin
|
|
AValue := Bits[ARowStart + ACol];
|
|
Bits[ARowStart + ACol] := Bits[ARowStart + W - 1 - ACol];
|
|
Bits[ARowStart + W - 1 - ACol] := AValue;
|
|
end;
|
|
Inc(ARowStart, W);
|
|
end;
|
|
SetBitmapBits(ABitmap, Bits, True);
|
|
end;
|
|
|
|
procedure TcxCanvas.FrameRegion(ARegion: TcxRegion; AColor: TColor = clDefault;
|
|
ABorderWidth: Integer = 1; ABorderHeight: Integer = 1);
|
|
begin
|
|
FrameRegion(ARegion.Handle, AColor, ABorderWidth, ABorderHeight);
|
|
end;
|
|
|
|
procedure TcxCanvas.FrameRegion(ARegion: TcxRegionHandle; AColor: TColor = clDefault;
|
|
ABorderWidth: Integer = 1; ABorderHeight: Integer = 1);
|
|
begin
|
|
SetBrushColor(AColor);
|
|
FrameRgn(Handle, ARegion, Brush.Handle, ABorderWidth, ABorderHeight);
|
|
end;
|
|
|
|
procedure TcxCanvas.Pie(const R: TRect; const ARadial1, ARadial2: TPoint);
|
|
begin
|
|
with R do
|
|
Canvas.Pie(Left, Top, Right, Bottom, ARadial1.X, ARadial1.Y, ARadial2.X, ARadial2.Y);
|
|
end;
|
|
|
|
procedure TcxCanvas.Pie(const R: TRect; AStartAngle, ASweepAngle: Integer);
|
|
|
|
{
|
|
A * B
|
|
V = ---------------------------------------------
|
|
Sqrt(A^2 * Sin^2(Alpha) + B^2 * Cos^2(Alpha))
|
|
|
|
Radial.X = V * Cos(Alpha)
|
|
Radial.Y = V * Sin(Alpha)
|
|
|
|
where:
|
|
A - horizontal ellipse semiaxis
|
|
B - vertical ellipse semiaxis
|
|
Angle - an angle between Radius-Vector and A calculated in counterclockwise direction
|
|
}
|
|
|
|
function CalculateRadial(A, B: Integer; const ACenter: TPoint; AnAngle: Integer): TPoint;
|
|
var
|
|
Sin, Cos, V: Extended;
|
|
begin
|
|
SinCos(DegToRad(AnAngle), Sin, Cos);
|
|
if (A <> 0) and (B <> 0) then
|
|
V := A * B / Sqrt(A * A * Sin * Sin + B * B * Cos * Cos)
|
|
else
|
|
V := 0;
|
|
Result.X := ACenter.X + Round(V * Cos);
|
|
Result.Y := ACenter.Y - Round(V * Sin);
|
|
end;
|
|
|
|
var
|
|
A, B: Integer;
|
|
Center, Radial1, Radial2: TPoint;
|
|
begin
|
|
if IsRectEmpty(R) or (ASweepAngle = 0) then Exit;
|
|
with R do
|
|
begin
|
|
A := (Right - Left) div 2;
|
|
B := (Bottom - Top) div 2;
|
|
Center.X := Left + A;
|
|
Center.Y := Top + B;
|
|
end;
|
|
Radial1 := CalculateRadial(A, B, Center, AStartAngle);
|
|
if ASweepAngle = 360 then
|
|
Radial2 := Radial1
|
|
else
|
|
Radial2 := CalculateRadial(A, B, Center, AStartAngle + ASweepAngle);
|
|
if (Radial1.X <> Radial2.X) or (Radial1.Y <> Radial2.Y) or (ASweepAngle > 180) then
|
|
Pie(R, Radial1, Radial2);
|
|
end;
|
|
|
|
function TcxCanvas.FontHeight(AFont: TFont): Integer;
|
|
begin
|
|
Font := AFont;
|
|
Result := TextHeight('Qq');
|
|
end;
|
|
|
|
procedure TcxCanvas.FrameRect(const R: TRect; Color: TColor = clDefault;
|
|
ALineWidth: Integer = 1; ABorders: TcxBorders = cxBordersAll;
|
|
AExcludeFrame: Boolean = False);
|
|
begin
|
|
if IsRectEmpty(R) then Exit;
|
|
if Color <> clDefault then
|
|
begin
|
|
SetBrushColor(Color);
|
|
end;
|
|
with R do
|
|
begin
|
|
if bLeft in ABorders then
|
|
FillRect(Rect(Left, Top, Min(Left + ALineWidth, Right), Bottom), nil, AExcludeFrame);
|
|
if bRight in ABorders then
|
|
FillRect(Rect(Max(Right - ALineWidth, Left), Top, Right, Bottom), nil, AExcludeFrame);
|
|
if bTop in ABorders then
|
|
FillRect(Rect(Left, Top, Right, Min(Top + ALineWidth, Bottom)), nil, AExcludeFrame);
|
|
if bBottom in ABorders then
|
|
FillRect(Rect(Left, Max(Bottom - ALineWidth, Top), Right, Bottom), nil, AExcludeFrame);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.InvertFrame(const R: TRect; ABorderSize: Integer);
|
|
begin
|
|
with R do
|
|
begin
|
|
InvertRect(Rect(Left, Top, Left + ABorderSize, Bottom));
|
|
InvertRect(Rect(Right - ABorderSize, Top, Right, Bottom));
|
|
InvertRect(Rect(Left + ABorderSize, Top,
|
|
Right - ABorderSize, Top + ABorderSize));
|
|
InvertRect(Rect(Left + ABorderSize, Bottom - ABorderSize,
|
|
Right - ABorderSize, Bottom));
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.InvertRect(const R: TRect);
|
|
begin
|
|
with Canvas do
|
|
begin
|
|
CopyMode := cmDstInvert;
|
|
CopyRect(R, Canvas, R);
|
|
CopyMode := cmSrcCopy;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.LineTo(X, Y: Integer);
|
|
begin
|
|
Canvas.LineTo(X, Y);
|
|
end;
|
|
|
|
procedure TcxCanvas.MoveTo(X, Y: Integer);
|
|
begin
|
|
Canvas.MoveTo(X, Y);
|
|
end;
|
|
|
|
procedure TcxCanvas.Polygon(const Points: array of TPoint);
|
|
begin
|
|
Canvas.Polygon(Points);
|
|
end;
|
|
|
|
procedure TcxCanvas.Polyline(const Points: array of TPoint);
|
|
begin
|
|
Canvas.Polyline(Points);
|
|
end;
|
|
|
|
procedure TcxCanvas.RotateBitmap(ABitmap: TBitmap; ARotationAngle: TcxRotationAngle;
|
|
AFlipVertically: Boolean = False);
|
|
var
|
|
SourceRGBs, DestRGBs: TRGBColors;
|
|
ARow, ACol, H, W, ASourceI, ADestI: Integer;
|
|
begin
|
|
SourceRGBs := nil; // to remove compiler's warning
|
|
if (ARotationAngle = ra0) and not AFlipVertically then exit;
|
|
H := ABitmap.Height;
|
|
W := ABitmap.Width;
|
|
|
|
SourceRGBs := GetBitmapBits(ABitmap, True);
|
|
SetLength(DestRGBs, Length(SourceRGBs));
|
|
|
|
for ARow := 0 to H - 1 do
|
|
for ACol := 0 to W - 1 do
|
|
begin
|
|
ASourceI := ARow * W + ACol;
|
|
case ARotationAngle of
|
|
raPlus90:
|
|
if AFlipVertically then
|
|
ADestI := ACol * H + ARow
|
|
else
|
|
ADestI := (W - ACol - 1) * H + ARow;
|
|
ra0:
|
|
ADestI := (H - 1 - ARow) * W + ACol;
|
|
ra180:
|
|
if AFlipVertically then
|
|
ADestI := ARow * W + W - ACol - 1
|
|
else
|
|
ADestI := (H - ARow - 1) * W + W - ACol - 1;
|
|
else
|
|
if AFlipVertically then
|
|
ADestI := (W - ACol - 1) * H + H - ARow - 1
|
|
else
|
|
ADestI := H - 1 + ACol * H - ARow;
|
|
end;
|
|
DestRGBs[ADestI] := SourceRGBs[ASourceI];
|
|
end;
|
|
|
|
if ARotationAngle in [raPlus90, raMinus90] then
|
|
begin
|
|
ABitmap.Height := 0;
|
|
ABitmap.Width := H;
|
|
ABitmap.Height := W;
|
|
end;
|
|
SetBitmapBits(ABitmap, DestRGBs, True);
|
|
end;
|
|
|
|
function TcxCanvas.TextExtent(const Text: string): TSize;
|
|
begin
|
|
TCanvasAccess(Canvas).RequiredState([csHandleValid, csFontValid]);
|
|
Result.cX := 0;
|
|
Result.cY := 0;
|
|
cxGetTextExtentPoint32(Handle, Text, Result);
|
|
end;
|
|
|
|
procedure TcxCanvas.TextExtent(const Text: string; var R: TRect; Flags: Integer);
|
|
var
|
|
RWidth, RHeight, TextWidth, TextHeight: Integer;
|
|
|
|
procedure CalcRSizes(var AWidth, AHeight: Integer);
|
|
begin
|
|
with R do
|
|
begin
|
|
AWidth := Right - Left;
|
|
AHeight := Bottom - Top;
|
|
end;
|
|
end;
|
|
|
|
procedure AlignR;
|
|
begin
|
|
if Flags and DT_CENTER <> 0 then
|
|
OffsetRect(R, (RWidth - TextWidth) div 2, 0)
|
|
else
|
|
if Flags and DT_RIGHT <> 0 then
|
|
OffsetRect(R, RWidth - TextWidth, 0);
|
|
if Flags and DT_VCENTER <> 0 then
|
|
OffsetRect(R, 0, (RHeight - TextHeight) div 2)
|
|
else
|
|
if Flags and DT_BOTTOM <> 0 then
|
|
OffsetRect(R, 0, RHeight - TextHeight);
|
|
end;
|
|
|
|
begin
|
|
CalcRSizes(RWidth, RHeight);
|
|
Flags := cxFlagsToDTFlags(Flags);
|
|
if (RWidth <= 0) and (Text <> '') then // A2079
|
|
R.Right := R.Left + 1;
|
|
if cxDrawText(Canvas.Handle, Text, R, Flags and not DT_VCENTER or DT_CALCRECT) = 0 then
|
|
begin
|
|
R.Right := R.Left;
|
|
R.Bottom := R.Top;
|
|
end;
|
|
CalcRSizes(TextWidth, TextHeight);
|
|
AlignR;
|
|
end;
|
|
|
|
function TcxCanvas.TextHeight(const Text: string): Integer;
|
|
begin
|
|
Result := TextExtent(Text).cy;
|
|
end;
|
|
|
|
function TcxCanvas.TextWidth(const Text: string): Integer;
|
|
begin
|
|
Result := TextExtent(Text).cx;
|
|
end;
|
|
|
|
procedure TcxCanvas.TransparentDraw(X, Y: Integer; ABitmap: TBitmap; AAlpha: Byte;
|
|
ABackground: TBitmap = nil);
|
|
|
|
function BlendValues(ASource, ADestination: DWORD): DWORD;
|
|
begin
|
|
Result := MulDiv(ASource, AAlpha, 255) + MulDiv(ADestination, 255 - AAlpha, 255);
|
|
end;
|
|
|
|
procedure BlendValue(const ASource: TRGBQuad; var ADestination: TRGBQuad);
|
|
begin
|
|
ADestination.rgbBlue := BlendValues(ASource.rgbBlue, ADestination.rgbBlue);
|
|
ADestination.rgbGreen := BlendValues(ASource.rgbGreen, ADestination.rgbGreen);
|
|
ADestination.rgbRed := BlendValues(ASource.rgbRed, ADestination.rgbRed);
|
|
end;
|
|
|
|
var
|
|
W, H, ARow, ACol: Integer;
|
|
ABackgroundBitmap: TBitmap;
|
|
ABlendFunction: TBlendFunction;
|
|
ABits, ABackgroundBits: TRGBColors;
|
|
begin
|
|
ABits := nil; // to remove compiler's warning
|
|
W := ABitmap.Width;
|
|
H := ABitmap.Height;
|
|
|
|
ABackgroundBitmap := TBitmap.Create;
|
|
ABackgroundBitmap.Width := W;
|
|
ABackgroundBitmap.Height := H;
|
|
|
|
if ABackground = nil then
|
|
ABackgroundBitmap.Canvas.CopyRect(Rect(0, 0, W, H), Canvas, Bounds(X, Y, W, H))
|
|
else
|
|
ABackgroundBitmap.Canvas.Draw(0, 0, ABackground);
|
|
|
|
if Assigned(VCLAlphaBlend) then
|
|
begin
|
|
ABlendFunction := DefaultBlendFunction;
|
|
ABlendFunction.SourceConstantAlpha := AAlpha;
|
|
VCLAlphaBlend(ABackgroundBitmap.Canvas.Handle,
|
|
0, 0, W, H, ABitmap.Canvas.Handle, 0, 0, W, H, ABlendFunction);
|
|
end
|
|
else
|
|
begin
|
|
ABits := GetBitmapBits(ABitmap, True);
|
|
ABackgroundBits := GetBitmapBits(ABackgroundBitmap, True);
|
|
|
|
for ARow := 0 to H - 1 do
|
|
for ACol := 0 to W - 1 do
|
|
BlendValue(ABits[ACol * H + ARow], ABackgroundBits[ACol * H + ACol]);
|
|
|
|
SetBitmapBits(ABackgroundBitmap, ABackgroundBits, True);
|
|
end;
|
|
|
|
Draw(X, Y, ABackgroundBitmap);
|
|
|
|
ABackgroundBitmap.Free;
|
|
end;
|
|
|
|
procedure TcxCanvas.RestoreDC;
|
|
var
|
|
ALastSavedDCIndex: Integer;
|
|
begin
|
|
ALastSavedDCIndex := FSavedDCs.Count - 1;
|
|
if ALastSavedDCIndex >= 0 then
|
|
begin
|
|
Windows.RestoreDC(Handle, Integer(FSavedDCs[ALastSavedDCIndex]));
|
|
FSavedDCs.Delete(ALastSavedDCIndex);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.SaveDC;
|
|
begin
|
|
FSavedDCs.Add(TObject(Windows.SaveDC(Handle)));
|
|
end;
|
|
|
|
procedure TcxCanvas.RestoreClipRegion;
|
|
var
|
|
ALastSavedRegionIndex: Integer;
|
|
begin
|
|
ALastSavedRegionIndex := FSavedRegions.Count - 1;
|
|
if ALastSavedRegionIndex >= 0 then
|
|
begin
|
|
SetClipRegion(TcxRegion(FSavedRegions[ALastSavedRegionIndex]), roSet);
|
|
FSavedRegions.Delete(ALastSavedRegionIndex);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.SaveClipRegion;
|
|
begin
|
|
FSavedRegions.Add(GetClipRegion);
|
|
end;
|
|
|
|
procedure TcxCanvas.RestoreState;
|
|
|
|
procedure InternalRestoreState(var ACurrentState: TcxCanvasState);
|
|
begin
|
|
Font.Assign(ACurrentState.Font);
|
|
ACurrentState.Font.Free;
|
|
Brush.Assign(ACurrentState.Brush);
|
|
ACurrentState.Brush.Free;
|
|
Pen.Assign(ACurrentState.Pen);
|
|
ACurrentState.Pen.Free;
|
|
end;
|
|
|
|
begin
|
|
if Length(FSavedStates) > 0 then
|
|
begin
|
|
InternalRestoreState(FSavedStates[High(FSavedStates)]);
|
|
SetLength(FSavedStates, Length(FSavedStates) - 1);
|
|
RestoreDC;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCanvas.SaveState;
|
|
|
|
procedure InternalSaveState(var ACurrentState: TcxCanvasState);
|
|
begin
|
|
ACurrentState.Font := TFont.Create;
|
|
ACurrentState.Font.Assign(Font);
|
|
ACurrentState.Brush := TBrush.Create;
|
|
ACurrentState.Brush.Assign(Brush);
|
|
ACurrentState.Pen := TPen.Create;
|
|
ACurrentState.Pen.Assign(Pen);
|
|
end;
|
|
|
|
begin
|
|
SaveDC;
|
|
SetLength(FSavedStates, Length(FSavedStates) + 1);
|
|
InternalSaveState(FSavedStates[High(FSavedStates)]);
|
|
end;
|
|
|
|
procedure TcxCanvas.GetParams(var AParams: TcxViewParams);
|
|
begin
|
|
AParams.Color := Brush.Color;
|
|
AParams.Font := Font;
|
|
AParams.TextColor := Font.Color;
|
|
end;
|
|
|
|
procedure TcxCanvas.SetParams(AParams: TcxViewParams);
|
|
begin
|
|
SetBrushColor(AParams.Color);
|
|
Font := AParams.Font;
|
|
Font.Color := AParams.TextColor;
|
|
end;
|
|
|
|
procedure TcxCanvas.SetBrushColor(Value: TColor);
|
|
begin
|
|
if Brush.Color <> Value then
|
|
Brush.Color := Value;
|
|
end;
|
|
|
|
procedure TcxCanvas.SetFontAngle(Value: Integer);
|
|
var
|
|
ALogFont: TLogFont;
|
|
begin
|
|
cxGetFontData(Font.Handle, ALogFont);
|
|
ALogFont.lfEscapement := Value * 10;
|
|
if Value <> 0 then
|
|
ALogFont.lfOutPrecision := OUT_TT_ONLY_PRECIS;
|
|
Font.Handle := CreateFontIndirect(ALogFont);
|
|
end;
|
|
|
|
procedure TcxCanvas.GetTextStringsBounds(Text: string; R: TRect; Flags: Integer;
|
|
Enabled: Boolean; var ABounds: TRectArray);
|
|
var
|
|
AAlignHorz, AAlignVert, AMaxCharCount: Integer;
|
|
ATextR: TRect;
|
|
AStringSize: TSize;
|
|
|
|
procedure PrepareRects;
|
|
begin
|
|
if not Enabled then
|
|
with R do
|
|
begin
|
|
Dec(Right);
|
|
Dec(Bottom);
|
|
end;
|
|
ATextR := R;
|
|
TextExtent(Text, ATextR, Flags);
|
|
case AAlignVert of
|
|
cxAlignBottom:
|
|
OffsetRect(ATextR, 0, R.Bottom - ATextR.Bottom);
|
|
cxAlignVCenter:
|
|
OffsetRect(ATextR, 0, (R.Bottom - ATextR.Bottom) div 2);
|
|
end;
|
|
end;
|
|
|
|
procedure CheckMaxCharCount;
|
|
|
|
function ProcessSpecialChars: Boolean;
|
|
const
|
|
SpecialChars = [#10, #13];
|
|
var
|
|
I, ACharCount: Integer;
|
|
begin
|
|
Result := False;
|
|
for I := 1 to AMaxCharCount do
|
|
if Text[I] in SpecialChars then
|
|
begin
|
|
AMaxCharCount := I - 1;
|
|
ACharCount := 1;
|
|
if (I < Length(Text)) and
|
|
(Text[I + 1] in SpecialChars) and (Text[I] <> Text[I + 1]) then
|
|
Inc(ACharCount);
|
|
Delete(Text, I, ACharCount);
|
|
Result := True;
|
|
Break;
|
|
end;
|
|
end;
|
|
|
|
procedure ProcessSpaces;
|
|
var
|
|
I: Integer;
|
|
begin
|
|
if AMaxCharCount < Length(Text) then
|
|
for I := AMaxCharCount + 1 downto 1 do
|
|
if Text[I] = ' ' then
|
|
begin
|
|
if I < AMaxCharCount then
|
|
begin
|
|
AMaxCharCount := I;
|
|
if AAlignHorz <> cxAlignLeft then
|
|
begin
|
|
Delete(Text, I, 1);
|
|
Dec(AMaxCharCount);
|
|
end;
|
|
end;
|
|
Break;
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
if not ProcessSpecialChars then
|
|
ProcessSpaces;
|
|
end;
|
|
|
|
procedure GetStringSize;
|
|
begin
|
|
if AMaxCharCount = 0 then
|
|
AStringSize.cx := 0
|
|
else
|
|
cxGetTextExtentPoint32(Handle, Copy(Text, 1, AMaxCharCount), AStringSize, AMaxCharCount);
|
|
end;
|
|
|
|
function GetBounds: TRect;
|
|
begin
|
|
Result := ATextR;
|
|
with Result, AStringSize do
|
|
begin
|
|
case AAlignHorz of
|
|
cxAlignLeft:
|
|
Right := Left + cx;
|
|
cxAlignRight:
|
|
Left := Right - cx;
|
|
cxAlignHCenter:
|
|
begin
|
|
Left := (Left + Right - cx) div 2;
|
|
Right := Left + cx;
|
|
end;
|
|
end;
|
|
Bottom := Top + cy;
|
|
end;
|
|
ATextR.Top := Result.Bottom;
|
|
end;
|
|
|
|
begin
|
|
if Text = '' then Exit;
|
|
if Flags and cxShowPrefix <> 0 then
|
|
begin
|
|
Text := StripHotKey(Text);
|
|
Flags := Flags and not cxShowPrefix;
|
|
end;
|
|
AAlignHorz := Flags and (cxAlignLeft or cxAlignRight or cxAlignHCenter);
|
|
AAlignVert := Flags and (cxAlignTop or cxAlignBottom or cxAlignVCenter);
|
|
PrepareRects;
|
|
repeat
|
|
GetTextExtentExPoint(Handle, PChar(Text), Length(Text), R.Right - R.Left,
|
|
@AMaxCharCount, nil, AStringSize);
|
|
CheckMaxCharCount;
|
|
GetStringSize;
|
|
SetLength(ABounds, High(ABounds) + 2);
|
|
ABounds[High(ABounds)] := GetBounds;
|
|
Delete(Text, 1, AMaxCharCount);
|
|
until Text = '';
|
|
end;
|
|
|
|
procedure TcxCanvas.BeginPath;
|
|
begin
|
|
Windows.BeginPath(Handle);
|
|
end;
|
|
|
|
procedure TcxCanvas.EndPath;
|
|
begin
|
|
Windows.EndPath(Handle);
|
|
end;
|
|
|
|
function TcxCanvas.PathToRegion: TcxRegion;
|
|
begin
|
|
Result := TcxRegion.Create(Windows.PathToRegion(Handle));
|
|
end;
|
|
|
|
procedure TcxCanvas.WidenPath;
|
|
begin
|
|
Windows.WidenPath(Handle);
|
|
end;
|
|
|
|
procedure TcxCanvas.ExcludeClipRect(const R: TRect);
|
|
begin
|
|
with R do
|
|
Windows.ExcludeClipRect(Handle, Left, Top, Right, Bottom);
|
|
end;
|
|
|
|
procedure TcxCanvas.IntersectClipRect(const R: TRect);
|
|
begin
|
|
with R do
|
|
Windows.IntersectClipRect(Canvas.Handle, Left, Top, Right, Bottom);
|
|
end;
|
|
|
|
function TcxCanvas.GetClipRegion(AConsiderOrigin: Boolean = True): TcxRegion;
|
|
const
|
|
MaxRegionSize = 30000;
|
|
begin
|
|
Result := TcxRegion.Create;
|
|
if GetClipRgn(Handle, Result.Handle) = 0 then
|
|
SetRectRgn(Result.Handle, 0, 0, MaxRegionSize, MaxRegionSize);
|
|
if AConsiderOrigin then
|
|
Result.Offset(-DCOrigin.X, -DCOrigin.Y);
|
|
end;
|
|
|
|
procedure TcxCanvas.SetClipRegion(ARegion: TcxRegion; AOperation: TcxRegionOperation;
|
|
ADestroyRegion: Boolean = True; AConsiderOrigin: Boolean = True);
|
|
var
|
|
AClipRegion: TcxRegion;
|
|
ARegionOrigin: TPoint;
|
|
begin
|
|
if AOperation = roSet then
|
|
begin
|
|
if AConsiderOrigin then
|
|
begin
|
|
ARegionOrigin := DCOrigin;
|
|
ARegion.Offset(ARegionOrigin.X, ARegionOrigin.Y);
|
|
end;
|
|
SelectClipRgn(Handle, ARegion.Handle);
|
|
if ADestroyRegion then
|
|
ARegion.Free
|
|
else
|
|
if AConsiderOrigin then
|
|
ARegion.Offset(-ARegionOrigin.X, -ARegionOrigin.Y);
|
|
end
|
|
else
|
|
begin
|
|
AClipRegion := GetClipRegion(AConsiderOrigin);
|
|
AClipRegion.Combine(ARegion, AOperation, ADestroyRegion);
|
|
SetClipRegion(AClipRegion, roSet, True, AConsiderOrigin);
|
|
end;
|
|
end;
|
|
|
|
function TcxCanvas.RectFullyVisible(const R: TRect): Boolean;
|
|
var
|
|
AClipRegion, ARegion: TcxRegion;
|
|
begin
|
|
AClipRegion := GetClipRegion;
|
|
ARegion := TcxRegion.Create(R);
|
|
try
|
|
CombineRgn(AClipRegion.Handle, AClipRegion.Handle, ARegion.Handle, RGN_AND);
|
|
Result := AClipRegion.IsEqual(ARegion);
|
|
finally
|
|
ARegion.Free;
|
|
AClipRegion.Free;
|
|
end;
|
|
end;
|
|
|
|
function TcxCanvas.RectVisible(const R: TRect): Boolean;
|
|
begin
|
|
Result := Windows.RectVisible(Handle, R);
|
|
end;
|
|
|
|
{ TcxScreen }
|
|
|
|
type
|
|
TcxScreenControl = class(TControl)
|
|
protected
|
|
function GetDeviceContext(var WindowHandle: HWnd): HDC; override;
|
|
end;
|
|
|
|
function TcxScreenControl.GetDeviceContext(var WindowHandle: HWnd): HDC;
|
|
begin
|
|
WindowHandle := GetDesktopWindow;
|
|
Result := GetDCEx(WindowHandle, 0, DCX_CACHE or DCX_LOCKWINDOWUPDATE);
|
|
end;
|
|
|
|
{ TScreenCanvas }
|
|
|
|
type
|
|
TScreenCanvas = class(TControlCanvas)
|
|
public
|
|
constructor Create;
|
|
destructor Destroy; override;
|
|
end;
|
|
|
|
constructor TScreenCanvas.Create;
|
|
begin
|
|
inherited;
|
|
Control := TcxScreenControl.Create(nil);
|
|
end;
|
|
|
|
destructor TScreenCanvas.Destroy;
|
|
begin
|
|
FreeHandle;
|
|
Control.Free;
|
|
Control := nil;
|
|
inherited;
|
|
end;
|
|
|
|
{ TcxScreenCanvas }
|
|
|
|
constructor TcxScreenCanvas.Create;
|
|
begin
|
|
inherited Create(TScreenCanvas.Create);
|
|
end;
|
|
|
|
destructor TcxScreenCanvas.Destroy;
|
|
begin
|
|
FreeAndNil(FCanvas);
|
|
inherited;
|
|
end;
|
|
|
|
{ TcxCustomBitmap }
|
|
|
|
constructor TcxCustomBitmap.Create;
|
|
begin
|
|
CreateSize(0, 0);
|
|
end;
|
|
|
|
constructor TcxCustomBitmap.CreateSize(ARect: TRect);
|
|
begin
|
|
CreateSize(cxRectWidth(ARect), cxRectHeight(ARect));
|
|
end;
|
|
|
|
constructor TcxCustomBitmap.CreateSize(AWidth, AHeight: Integer);
|
|
begin
|
|
CreateSize(AWidth, AHeight, pf24bit);
|
|
end;
|
|
|
|
constructor TcxCustomBitmap.CreateSize(AWidth, AHeight: Integer; APixelFormat: TPixelFormat);
|
|
begin
|
|
inherited Create;
|
|
|
|
Initialize(AWidth, AHeight, APixelFormat);
|
|
end;
|
|
|
|
destructor TcxCustomBitmap.Destroy;
|
|
begin
|
|
FreeAndNil(FcxCanvas);
|
|
inherited;
|
|
end;
|
|
|
|
procedure TcxCustomBitmap.BeginUpdate;
|
|
begin
|
|
Inc(FLockCount);
|
|
end;
|
|
|
|
procedure TcxCustomBitmap.EndUpdate(AForceUpdate: Boolean = True);
|
|
begin
|
|
if FLockCount > 0 then
|
|
begin
|
|
Dec(FLockCount);
|
|
if AForceUpdate or FModified then
|
|
Changed(Self);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCustomBitmap.Rotate(ARotationAngle: TcxRotationAngle; AFlipVertically: Boolean);
|
|
begin
|
|
cxCanvas.RotateBitmap(Self, ARotationAngle, AFlipVertically);
|
|
end;
|
|
|
|
procedure TcxCustomBitmap.SetSize(AWidth, AHeight: Integer);
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
{$IFDEF DELPHI10}
|
|
inherited;
|
|
{$ELSE}
|
|
Width := AWidth;
|
|
Height := AHeight;
|
|
{$ENDIF}
|
|
finally
|
|
EndUpdate(False);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCustomBitmap.Changed(Sender: TObject);
|
|
begin
|
|
if not ChangeLocked then
|
|
begin
|
|
inherited;
|
|
Update;
|
|
FModified := False;
|
|
end
|
|
else
|
|
FModified := True;
|
|
end;
|
|
|
|
function TcxCustomBitmap.ChangeLocked: Boolean;
|
|
begin
|
|
Result := FLockCount > 0;
|
|
end;
|
|
|
|
procedure TcxCustomBitmap.Initialize(AWidth, AHeight: Integer; APixelFormat: TPixelFormat);
|
|
begin
|
|
FcxCanvas := TcxCanvas.Create(Canvas);
|
|
|
|
BeginUpdate;
|
|
try
|
|
Width := AWidth;
|
|
Height := AHeight;
|
|
PixelFormat := APixelFormat;
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxCustomBitmap.Update;
|
|
begin
|
|
// do nothing
|
|
end;
|
|
|
|
function TcxCustomBitmap.GetClientRect: TRect;
|
|
begin
|
|
Result := Rect(0, 0, Width, Height);
|
|
end;
|
|
|
|
{ TcxBitmap }
|
|
|
|
const
|
|
ClrNone: TRGBQuad = (rgbBlue: $FF; rgbGreen: $FF; rgbRed: $FF; rgbReserved: $FF);
|
|
ClrTransparent: TRGBQuad = (rgbBlue: 0; rgbGreen: 0; rgbRed: 0; rgbReserved: 0);
|
|
|
|
function cxColorIsEqual(const AColor1, AColor2: TRGBQuad): Boolean;
|
|
begin
|
|
Result := DWORD(AColor1) = DWORD(AColor2);
|
|
end;
|
|
|
|
function cxColorEssence(const AColor: TRGBQuad): DWORD;
|
|
begin
|
|
Result := DWORD(AColor) and $00FFFFFF;
|
|
end;
|
|
|
|
function TcxColorList.Add(AColor: TColor): Integer;
|
|
begin
|
|
Result := inherited Add(Pointer(cxColorEssence(cxColorToRGBQuad(AColor))));
|
|
end;
|
|
|
|
constructor TcxBitmap.CreateSize(AWidth, AHeight: Integer; APixelFormat: TPixelFormat);
|
|
begin
|
|
inherited CreateSize(AWidth, AHeight, pf32bit);
|
|
Clear;
|
|
end;
|
|
|
|
constructor TcxBitmap.CreateSize(AWidth, AHeight: Integer; ATransparentBkColor: TRGBQuad);
|
|
begin
|
|
inherited CreateSize(AWidth, AHeight, pf32bit);
|
|
|
|
TransparentBkColor := ATransparentBkColor;
|
|
Clear;
|
|
end;
|
|
|
|
destructor TcxBitmap.Destroy;
|
|
begin
|
|
FreeAndNil(FTransparentPixels);
|
|
DeleteDC(FDC);
|
|
inherited;
|
|
end;
|
|
|
|
procedure TcxBitmap.GetBitmapColors(out AColors: TRGBColors);
|
|
begin
|
|
SetLength(AColors, Width * Height);
|
|
GetDIBits(FDC, Handle, 0, Height, AColors, FBitmapInfo, DIB_RGB_COLORS);
|
|
end;
|
|
|
|
procedure TcxBitmap.SetBitmapColors(const AColors: TRGBColors);
|
|
begin
|
|
SetDIBits(FDC, Handle, 0, Height, AColors, FBitmapInfo, DIB_RGB_COLORS);
|
|
end;
|
|
|
|
procedure TcxBitmap.AlphaBlend(ABitmap: TcxBitmap; const ARect: TRect; ASmoothImage: Boolean; AConstantAlpha: Byte = $FF);
|
|
begin
|
|
cxAlphaBlend(ABitmap, Self, ARect, ClientRect, ASmoothImage, AConstantAlpha);
|
|
end;
|
|
|
|
procedure TcxBitmap.Clear;
|
|
begin
|
|
if FTransparentBkColor.rgbReserved <> 0 then
|
|
TransformBitmap(btmClear)
|
|
else
|
|
begin
|
|
Canvas.Brush.Color := 0;
|
|
Canvas.FillRect(ClientRect);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBitmap.CopyBitmap(ABitmap: TBitmap; ACopyMode: DWORD);
|
|
begin
|
|
CopyBitmap(ABitmap, ClientRect, cxNullPoint, ACopyMode);
|
|
end;
|
|
|
|
procedure TcxBitmap.CopyBitmap(ABitmap: TBitmap; const ADestRect: TRect; const ASrcTopLeft: TPoint; ACopyMode: DWORD);
|
|
begin
|
|
cxBitBlt(Canvas.Handle, ABitmap.Canvas.Handle, ADestRect, ASrcTopLeft, ACopyMode);
|
|
end;
|
|
|
|
procedure TcxBitmap.DrawHatch(const AHatchData: TcxHatchData);
|
|
begin
|
|
HatchData := AHatchData;
|
|
TransformBitmap(btmHatch);
|
|
end;
|
|
|
|
procedure TcxBitmap.DrawHatch(AColor1, AColor2: TColor; AStep, AAlpha1, AAlpha2: Byte);
|
|
var
|
|
AHatchData: TcxHatchData;
|
|
begin
|
|
AHatchData.Color1 := cxColorToRGBQuad(AColor1, $FF);
|
|
AHatchData.Alpha1 := AAlpha1;
|
|
AHatchData.Color2 := cxColorToRGBQuad(AColor2, $FF);
|
|
AHatchData.Alpha2 := AAlpha2;
|
|
AHatchData.Step := AStep;
|
|
DrawHatch(AHatchData);
|
|
end;
|
|
|
|
procedure TcxBitmap.DrawShadow(AMaskBitmap: TcxBitmap; AShadowSize: Integer; AShadowColor: TColor; AInflateSize: Boolean);
|
|
const
|
|
DPSnaa = $00200F09;
|
|
var
|
|
AShadowBitmap, ASelfCopy: TcxBitmap;
|
|
begin
|
|
AShadowBitmap := TcxBitmap.CreateSize(Width + AShadowSize * 2, Height + AShadowSize * 2, ClrNone);
|
|
try
|
|
AShadowBitmap.CopyBitmap(AMaskBitmap, cxRectOffset(ClientRect, AShadowSize, AShadowSize), cxNullPoint);
|
|
AShadowBitmap.Canvas.Brush.Color := AShadowColor;
|
|
AShadowBitmap.Canvas.CopyMode := DPSnaa;
|
|
AShadowBitmap.Canvas.Draw(AShadowSize, AShadowSize, AShadowBitmap);
|
|
|
|
AShadowBitmap.TransparentBkColor := ClrTransparent;
|
|
AShadowBitmap.TransformBitmap(btmCorrectBlend);
|
|
|
|
ASelfCopy := TcxBitmap.CreateSize(Width + AShadowSize, Height + AShadowSize);
|
|
try
|
|
ASelfCopy.CopyBitmap(Self);
|
|
ASelfCopy.CopyBitmap(AShadowBitmap, ASelfCopy.ClientRect, Point(AShadowSize, AShadowSize), SRCPAINT);
|
|
if AInflateSize then
|
|
SetSize(Width + AShadowSize, Height + AShadowSize);
|
|
CopyBitmap(ASelfCopy);
|
|
finally
|
|
ASelfCopy.Free;
|
|
end;
|
|
finally
|
|
AShadowBitmap.Free;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBitmap.Filter(AMaskBitmap: TcxBitmap);
|
|
const
|
|
DSna = $00220326;
|
|
begin
|
|
CopyBitmap(AMaskBitmap, DSna);
|
|
end;
|
|
|
|
procedure TcxBitmap.Invert;
|
|
begin
|
|
CopyBitmap(Self, NOTSRCCOPY);
|
|
end;
|
|
|
|
procedure TcxBitmap.MakeOpaque;
|
|
var
|
|
AColors: TRGBColors;
|
|
I: Integer;
|
|
begin
|
|
GetBitmapColors(AColors);
|
|
for I := 0 to Length(AColors) - 1 do
|
|
AColors[I].rgbReserved := 255;
|
|
SetBitmapColors(AColors);
|
|
end;
|
|
|
|
procedure TcxBitmap.RecoverAlphaChannel(ATransparentColor: TColor);
|
|
begin
|
|
TransparentPixels.Clear;
|
|
TransparentPixels.Add(ATransparentColor);
|
|
TransparentBkColor := cxColorToRGBQuad(ATransparentColor);
|
|
TransformBitmap(btmCorrectBlend);
|
|
end;
|
|
|
|
procedure TcxBitmap.SetSize(AWidth, AHeight: Integer);
|
|
begin
|
|
inherited;
|
|
Clear;
|
|
end;
|
|
|
|
procedure TcxBitmap.Shade(AMaskBitmap: TcxBitmap);
|
|
const
|
|
DSPDxax = $00E20746;
|
|
begin
|
|
AMaskBitmap.Canvas.CopyMode := cmPatInvert;
|
|
AMaskBitmap.Canvas.Draw(0, 0, AMaskBitmap);
|
|
|
|
Canvas.CopyMode := cmSrcCopy;
|
|
Canvas.Draw(1, 1, AMaskBitmap);
|
|
|
|
Canvas.CopyMode := DSPDxax;
|
|
Canvas.Brush.Color := clBtnShadow;
|
|
Canvas.Draw(0, 0, AMaskBitmap);
|
|
|
|
TransformBitmap(btmCorrectBlend);
|
|
end;
|
|
|
|
procedure TcxBitmap.TransformBitmap(AMode: TcxBitmapTransformationMode);
|
|
var
|
|
AColors: TRGBColors;
|
|
I, J: Integer;
|
|
ATransformProc: TcxBitmapTransformationProc;
|
|
begin
|
|
case AMode of
|
|
btmDingy:
|
|
ATransformProc := Dingy;
|
|
btmDirty:
|
|
ATransformProc := Dirty;
|
|
btmGrayScale:
|
|
ATransformProc := GrayScale;
|
|
btmSetOpaque:
|
|
ATransformProc := SetOpaque;
|
|
btmMakeMask:
|
|
ATransformProc := MakeMask;
|
|
btmFade:
|
|
ATransformProc := Fade;
|
|
btmDisable:
|
|
ATransformProc := Disable;
|
|
btmCorrectBlend:
|
|
ATransformProc := CorrectBlend;
|
|
btmHatch:
|
|
ATransformProc := Hatch;
|
|
btmClear:
|
|
ATransformProc := ClearColor;
|
|
else
|
|
Exit;
|
|
end;
|
|
|
|
GetBitmapColors(AColors);
|
|
|
|
for I := 0 to Width - 1 do
|
|
for J := 0 to Height - 1 do
|
|
begin
|
|
FCurrentColorIndex.X := I;
|
|
FCurrentColorIndex.Y := J;
|
|
|
|
ATransformProc(AColors[J * Width + I]);
|
|
end;
|
|
|
|
SetBitmapColors(AColors);
|
|
Changed(Self);
|
|
end;
|
|
|
|
procedure TcxBitmap.Initialize(AWidth, AHeight: Integer; APixelFormat: TPixelFormat);
|
|
begin
|
|
FillBitmapInfoHeader(FBitmapInfo.bmiHeader, Self, False);
|
|
FDC := CreateCompatibleDC(0);
|
|
FTransparentPixels := TcxColorList.Create;
|
|
inherited;
|
|
end;
|
|
|
|
procedure TcxBitmap.Update;
|
|
begin
|
|
UpdateBitmapInfo;
|
|
end;
|
|
|
|
function TcxBitmap.GetIsAlphaUsed: Boolean;
|
|
var
|
|
AColors: TRGBColors;
|
|
I: Integer;
|
|
begin
|
|
Result := False;
|
|
GetBitmapColors(AColors);
|
|
for I := Low(AColors) to High(AColors) do
|
|
begin
|
|
Result := AColors[I].rgbReserved <> 0;
|
|
if Result then
|
|
Break;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBitmap.CorrectBlend(var AColor: TRGBQuad);
|
|
begin
|
|
if not IsColorTransparent(AColor) and (AColor.rgbReserved = 0) then
|
|
AColor.rgbReserved := $FF;
|
|
end;
|
|
|
|
procedure TcxBitmap.ClearColor(var AColor: TRGBQuad);
|
|
begin
|
|
AColor := TransparentBkColor;
|
|
end;
|
|
|
|
procedure TcxBitmap.Dingy(var AColor: TRGBQuad);
|
|
|
|
procedure LightColor(var AColor: Byte);
|
|
begin
|
|
Inc(AColor, MulDiv(255 - AColor, 3, 10));
|
|
end;
|
|
|
|
begin
|
|
if not IsColorTransparent(AColor) then
|
|
begin
|
|
LightColor(AColor.rgbRed);
|
|
LightColor(AColor.rgbGreen);
|
|
LightColor(AColor.rgbBlue);
|
|
LightColor(AColor.rgbReserved);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBitmap.Dirty(var AColor: TRGBQuad);
|
|
var
|
|
ADirtyScreen:TRGBQuad;
|
|
begin
|
|
if not IsColorTransparent(AColor) then
|
|
begin
|
|
Scale(AColor, GrayMap);
|
|
|
|
ADirtyScreen := cxColorToRGBQuad(clBtnShadow);
|
|
ADirtyScreen.rgbReserved := $C0;
|
|
|
|
cxBlendFunction(ADirtyScreen, AColor, $EE);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBitmap.Disable(var AColor: TRGBQuad);
|
|
begin
|
|
if not IsColorTransparent(AColor) then
|
|
Scale(AColor, DisableMap);
|
|
end;
|
|
|
|
procedure TcxBitmap.Fade(var AColor: TRGBQuad);
|
|
begin
|
|
if not IsColorTransparent(AColor) then
|
|
Scale(AColor, FadeMap);
|
|
end;
|
|
|
|
procedure TcxBitmap.GrayScale(var AColor: TRGBQuad);
|
|
var
|
|
AValue: Byte;
|
|
begin
|
|
if not IsColorTransparent(AColor) then
|
|
begin
|
|
AValue := (AColor.rgbRed + AColor.rgbGreen + AColor.rgbBlue) div 3;
|
|
AColor.rgbRed := AValue;
|
|
AColor.rgbGreen := AValue;
|
|
AColor.rgbBlue := AValue;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBitmap.Hatch(var AColor: TRGBQuad);
|
|
begin
|
|
if Odd(FCurrentColorIndex.X div FHatchData.Step + FCurrentColorIndex.Y div FHatchData.Step) then
|
|
cxBlendFunction(FHatchData.Color2, AColor, FHatchData.Alpha2)
|
|
else
|
|
cxBlendFunction(FHatchData.Color1, AColor, FHatchData.Alpha1);
|
|
end;
|
|
|
|
procedure TcxBitmap.MakeMask(var AColor: TRGBQuad);
|
|
begin
|
|
if IsColorTransparent(AColor) then
|
|
AColor := ClrNone
|
|
else
|
|
AColor := ClrTransparent;
|
|
end;
|
|
|
|
procedure TcxBitmap.SetOpaque(var AColor: TRGBQuad);
|
|
begin
|
|
AColor.rgbReserved := $FF;
|
|
end;
|
|
|
|
procedure TcxBitmap.Scale(var AColor: TRGBQuad; const AColorMap: TcxColorTransitionMap);
|
|
var
|
|
AResultValue: Byte;
|
|
begin
|
|
AResultValue := Round(AColorMap.RedScale * AColor.rgbRed + AColorMap.GreenScale * AColor.rgbGreen + AColorMap.BlueScale * AColor.rgbBlue);
|
|
AColor.rgbBlue := AResultValue;
|
|
AColor.rgbGreen := AResultValue;
|
|
AColor.rgbRed := AResultValue;
|
|
end;
|
|
|
|
procedure TcxBitmap.UpdateBitmapInfo;
|
|
begin
|
|
FBitmapInfo.bmiHeader.biHeight := Height;
|
|
FBitmapInfo.bmiHeader.biWidth := Width;
|
|
end;
|
|
|
|
function TcxBitmap.IsColorTransparent(const AColor: TRGBQuad): Boolean;
|
|
|
|
function IsTransparentPixel(AColor: DWORD): Boolean;
|
|
begin
|
|
Result := TransparentPixels.IndexOf(Pointer(AColor)) <> -1;
|
|
end;
|
|
|
|
begin
|
|
Result := cxColorIsEqual(AColor, TransparentBkColor) or IsTransparentPixel(cxColorEssence(AColor));
|
|
end;
|
|
|
|
{ TcxImageList }
|
|
|
|
function cxCopyImage(ASrcHandle: THandle): HBITMAP; overload;
|
|
|
|
function SystemCopyImage: HBITMAP;
|
|
begin
|
|
Result := CopyImage(ASrcHandle, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
|
|
end;
|
|
|
|
function SoftwareCopyImage: HBITMAP;
|
|
var
|
|
ABitmapData: Windows.TBitmap;
|
|
AInfo: TBitmapInfo;
|
|
ADestinationBits: Pointer;
|
|
ABits: TBytes;
|
|
begin
|
|
cxGetBitmapData(ASrcHandle, ABitmapData);
|
|
if ABitmapData.bmBitsPixel = 32 then
|
|
begin
|
|
FillBitmapInfoHeader(AInfo.bmiHeader, ABitmapData.bmWidth, ABitmapData.bmHeight, False);
|
|
if ABitmapData.bmBits = nil then
|
|
begin
|
|
SetLength(ABits, ABitmapData.bmWidth * ABitmapData.bmHeight * 4);
|
|
GetDIBits(cxScreenCanvas.Handle, ASrcHandle, 0, ABitmapData.bmHeight, ABits, AInfo, 0);
|
|
ABitmapData.bmBits := ABits;
|
|
end;
|
|
Result := CreateDIBSection(cxScreenCanvas.Handle, AInfo, DIB_RGB_COLORS, ADestinationBits, 0, 0);
|
|
cxCopyData(ABitmapData.bmBits, ADestinationBits, ABitmapData.bmWidth * ABitmapData.bmHeight * 4);
|
|
end
|
|
else
|
|
Result := SystemCopyImage;
|
|
end;
|
|
|
|
begin
|
|
if IsWin95X then
|
|
Result := SoftwareCopyImage
|
|
else
|
|
Result := SystemCopyImage;
|
|
end;
|
|
|
|
function TcxImageList.Add(AImage, AMask: TBitmap): Integer;
|
|
var
|
|
AImageHandle, AMaskHandle: HBITMAP;
|
|
begin
|
|
AImagehandle := GetImageHandle(AImage);
|
|
if AMask = nil then
|
|
AMaskHandle := CreateBitmap(Width, Height, 1, 1, nil)
|
|
else
|
|
AMaskHandle := AMask.Handle;
|
|
Result := ImageList_Add(Handle, AImageHandle, AMaskHandle);
|
|
if AMask = nil then
|
|
DeleteObject(AMaskHandle);
|
|
Change;
|
|
end;
|
|
|
|
procedure TcxImageList.AddImages(AImageList: TCustomImageList);
|
|
begin
|
|
if AImageList <> nil then
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
CopyImages(AImageList);
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function TcxImageList.AddMasked(AImage: TBitmap; AMaskColor: TColor): Integer;
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
if AMaskColor = clNone then
|
|
Result := Add(AImage, nil)
|
|
else
|
|
Result := ImageList_AddMasked(Handle, AImage.Handle, ColorToRGB(AMaskColor));
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxImageList.Assign(Source: TPersistent);
|
|
begin
|
|
if Source is TCustomImageList then
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
inherited;
|
|
Clear;
|
|
CopyImages(TCustomImageList(Source));
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxImageList.CopyImages(AImageList: TCustomImageList; AStartIndex, AEndIndex: Integer);
|
|
var
|
|
I: Integer;
|
|
AImage, AMask: TBitmap;
|
|
begin
|
|
BeginUpdate;
|
|
AImage := nil;
|
|
AMask := nil;
|
|
try
|
|
AImage := cxCreateBitmap(Width, Height, pf32bit);
|
|
AMask := cxCreateBitmap(Width, Height, pf1bit);
|
|
if AEndIndex < 0 then
|
|
AEndIndex := AImageList.Count - 1
|
|
else
|
|
AEndIndex := Min(AImageList.Count - 1, AEndIndex);
|
|
for I := Max(AStartIndex, 0) to AEndIndex do
|
|
begin
|
|
GetImageInfo(AImageList.Handle, I, AImage, AMask);
|
|
Add(AImage, AMask);
|
|
end;
|
|
finally
|
|
AImage.Free;
|
|
AMask.Free;
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxImageList.Insert(AIndex: Integer; AImage, AMask: TBitmap);
|
|
begin
|
|
if (AIndex >= 0) and (AIndex <= Count) then
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
Move(Add(AImage, AMask), AIndex);
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxImageList.InsertMasked(AIndex: Integer; AImage: TBitmap; AMaskColor: TColor);
|
|
begin
|
|
if (AIndex >= 0) and (AIndex <= Count) then
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
Move(AddMasked(AImage, AMaskColor), AIndex);
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxImageList.Move(ACurIndex, ANewIndex: Integer);
|
|
var
|
|
AStep: Integer;
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
AStep := cxSign(ANewIndex - ACurIndex);
|
|
while ACurIndex <> ANewIndex do
|
|
begin
|
|
ImageList_Copy(Handle, ACurIndex + AStep, Handle, ACurIndex, ILCF_SWAP);
|
|
Inc(ACurIndex, AStep);
|
|
end;
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
|
|
function TcxImageList.Replace(AIndex: Integer; AImage, AMask: TBitmap): Boolean;
|
|
var
|
|
AImageHandle, AMaskHandle: HBITMAP;
|
|
begin
|
|
AImagehandle := GetImageHandle(AImage);
|
|
AMaskHandle := GetImageHandle(AMask);
|
|
Result := ImageList_Replace(Handle, AIndex, AImageHandle, AMaskHandle);
|
|
Change;
|
|
end;
|
|
|
|
procedure TcxImageList.ReplaceMasked(AIndex: Integer; ANewImage: TBitmap; AMaskColor: TColor);
|
|
begin
|
|
BeginUpdate;
|
|
try
|
|
Delete(AIndex);
|
|
InsertMasked(AIndex, ANewImage, AMaskColor);
|
|
finally
|
|
EndUpdate;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxImageList.BeginUpdate;
|
|
begin
|
|
Inc(FLockCount);
|
|
end;
|
|
|
|
procedure TcxImageList.EndUpdate(AForceUpdate: Boolean = True);
|
|
begin
|
|
if FLockCount > 0 then
|
|
begin
|
|
Dec(FLockCount);
|
|
if AForceUpdate then
|
|
Change;
|
|
end;
|
|
end;
|
|
|
|
{$IFNDEF DELPHI6}
|
|
procedure TcxImageList.Draw(ACanvas: TCanvas; X, Y, AIndex: Integer;
|
|
ADrawingStyle: TDrawingStyle; AImageType: TImageType; AEnabled: Boolean);
|
|
begin
|
|
if HandleAllocated then
|
|
DoDraw(AIndex, ACanvas, X, Y, GetImageListStyle(ADrawingStyle, AImageType), AEnabled);
|
|
end;
|
|
{$ENDIF}
|
|
|
|
procedure TcxImageList.Draw(ACanvas: TCanvas; const ARect: TRect; AIndex: Integer;
|
|
AStretch, ASmoothResize, AEnabled: Boolean);
|
|
begin
|
|
DoDrawEx(AIndex, ACanvas, ARect, GetImageListStyle(DrawingStyle, ImageType), AStretch, ASmoothResize, AEnabled);
|
|
end;
|
|
|
|
procedure TcxImageList.GetImageInfo(AIndex: Integer; AImage, AMask: TBitmap);
|
|
begin
|
|
GetImageInfo(Handle, AIndex, AImage, AMask);
|
|
end;
|
|
|
|
procedure TcxImageList.GetImage(AIndex: Integer; AImage: TBitmap);
|
|
begin
|
|
GetImageInfo(AIndex, AImage, nil);
|
|
end;
|
|
|
|
procedure TcxImageList.GetMask(AIndex: Integer; AMask: TBitmap);
|
|
begin
|
|
GetImageInfo(AIndex, nil, AMask);
|
|
end;
|
|
|
|
class procedure TcxImageList.GetImageInfo(AHandle: HIMAGELIST; AIndex: Integer; AImage, AMask: TBitmap);
|
|
|
|
procedure GetBitmap(ASrcHandle: HBITMAP; ADestBitmap: TBitmap; ACopyAll: Boolean; const ARect: TRect);
|
|
|
|
procedure CopyRect;
|
|
var
|
|
ASrcBitmap: TBitmap;
|
|
AWidth, AHeight: Integer;
|
|
begin
|
|
ASrcBitmap := TBitmap.Create;
|
|
try
|
|
ASrcBitmap.Handle := cxCopyImage(ASrcHandle);
|
|
AWidth := cxRectWidth(ARect);
|
|
AHeight := cxRectHeight(ARect);
|
|
ADestBitmap.Width := AWidth;
|
|
ADestBitmap.Height := AHeight;
|
|
cxBitBlt(ADestBitmap.Canvas.Handle, ASrcBitmap.Canvas.Handle,
|
|
cxRect(0, 0, AWidth, AHeight), ARect.TopLeft, SRCCOPY);
|
|
TBitmapAccess(ADestBitmap).Changed(ADestBitmap);
|
|
finally
|
|
ASrcBitmap.Free;
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
if ACopyAll then
|
|
ADestBitmap.Handle := cxCopyImage(ASrcHandle)
|
|
else
|
|
CopyRect;
|
|
end;
|
|
|
|
var
|
|
AImageInfo: TImageInfo;
|
|
ACopyAll: Boolean;
|
|
begin
|
|
ACopyAll := AIndex = -1;
|
|
if ACopyAll then
|
|
AIndex := 0;
|
|
if ImageList_GetImageInfo(AHandle, AIndex, AImageInfo) then
|
|
begin
|
|
if AMask <> nil then
|
|
GetBitmap(AImageInfo.hbmMask, AMask, ACopyAll, AImageInfo.rcImage);
|
|
if AImage <> nil then
|
|
GetBitmap(AImageInfo.hbmImage, AImage, ACopyAll, AImageInfo.rcImage);
|
|
DeleteObject(AImageInfo.hbmImage);
|
|
DeleteObject(AImageInfo.hbmMask);
|
|
end;
|
|
end;
|
|
|
|
function TcxImageList.ChangeLocked: Boolean;
|
|
begin
|
|
Result := FLockCount > 0;
|
|
end;
|
|
|
|
procedure TcxImageList.Change;
|
|
begin
|
|
if not ChangeLocked then
|
|
inherited Change;
|
|
end;
|
|
|
|
procedure TcxImageList.DoDraw(Index: Integer; Canvas: TCanvas; X, Y: Integer;
|
|
Style: Cardinal; Enabled: Boolean = True);
|
|
begin
|
|
DoDrawEx(Index, Canvas, cxRectBounds(X, Y, Width, Height), Style, False, False, Enabled);
|
|
end;
|
|
|
|
procedure TcxImageList.DoDrawEx(AIndex: Integer; ACanvas: TCanvas;
|
|
const ARect: TRect; AStyle: Cardinal; AStretch, ASmoothResize, AEnabled: Boolean);
|
|
const
|
|
ADrawModes: array [Boolean] of TcxImageDrawMode = (idmDisabled, idmNormal);
|
|
var
|
|
AGlyphRect: TRect;
|
|
ADrawBitmap: TBitmap;
|
|
begin
|
|
if AStretch then
|
|
AGlyphRect := ARect
|
|
else
|
|
AGlyphRect := cxRectCenter(ARect, Width, Height);
|
|
if AlphaBlending then
|
|
cxDrawImage(ACanvas.Handle, AGlyphRect, ARect, nil, Self, AIndex, ADrawModes[AEnabled], ASmoothResize)
|
|
else
|
|
begin
|
|
if AStretch then
|
|
begin
|
|
ADrawBitmap := cxCreateBitmap(Width, Height, pfDevice);
|
|
try
|
|
inherited DoDraw(AIndex, ADrawBitmap.Canvas, 0, 0, AStyle, AEnabled);
|
|
cxDrawImage(ACanvas.Handle, AGlyphRect, ARect, ADrawBitmap, nil, 0, ADrawModes[AEnabled], ASmoothResize);
|
|
finally
|
|
ADrawBitmap.Free;
|
|
end;
|
|
end
|
|
else
|
|
inherited DoDraw(AIndex, ACanvas, AGlyphRect.Left, AGlyphRect.Top, AStyle, AEnabled);
|
|
end;
|
|
end;
|
|
|
|
procedure TcxImageList.Initialize;
|
|
begin
|
|
inherited;
|
|
FAlphaBlending := True;
|
|
Handle := ImageList_Create(Width, Height, ILC_COLOR32 or ILC_MASK, AllocBy, AllocBy);
|
|
end;
|
|
|
|
function TcxImageList.GetImageHandle(AImage: TBitmap): Integer;
|
|
begin
|
|
if AImage <> nil then
|
|
Result := AImage.Handle
|
|
else
|
|
Result := 0;
|
|
end;
|
|
|
|
class function TcxImageList.GetPixelFormat(AHandle: HIMAGELIST): Integer;
|
|
var
|
|
AImageInfo: TImageInfo;
|
|
ABitmap: Windows.TBitmap;
|
|
begin
|
|
Result := 0;
|
|
if ImageList_GetImageInfo(AHandle, 0, AImageInfo) then
|
|
begin
|
|
cxGetBitmapData(AImageInfo.hbmImage, ABitmap);
|
|
Result := ABitmap.bmBitsPixel;
|
|
DeleteObject(AImageInfo.hbmImage);
|
|
DeleteObject(AImageInfo.hbmMask);
|
|
end;
|
|
end;
|
|
|
|
const
|
|
SystemBrushes: TList = nil;
|
|
SysColorPrefix = {$IFDEF DELPHI7} clSystemColor {$ELSE} $80000000 {$ENDIF};
|
|
BrushDataSize = SizeOf(TcxBrushData);
|
|
scxBrushCacheReleaseUnusedBrush = 'Release unused brush';
|
|
|
|
destructor TcxBrushCache.Destroy;
|
|
var
|
|
I: Integer;
|
|
begin
|
|
try
|
|
for I := 0 to FCount - 1 do
|
|
FData[I].Brush.Free;
|
|
finally
|
|
inherited Destroy;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBrushCache.BeginUpdate;
|
|
begin
|
|
Inc(FLockRef);
|
|
end;
|
|
|
|
procedure TcxBrushCache.EndUpdate;
|
|
begin
|
|
Inc(FLockRef);
|
|
if (FLockRef = 0) and (FDeletedCount <> 0) then Pack;
|
|
end;
|
|
|
|
procedure TcxBrushCache.ReleaseBrush(var ABrush: TBrush);
|
|
var
|
|
AIndex: Integer;
|
|
begin
|
|
if ABrush <> nil then
|
|
begin
|
|
if not IsSystemBrush(ABrush) and IndexOf(ABrush.Color, AIndex) then
|
|
begin
|
|
with FData[AIndex] do
|
|
begin
|
|
Dec(RefCount);
|
|
CacheCheck(RefCount < 0, scxBrushCacheReleaseUnusedBrush);
|
|
if RefCount <= 0 then Delete(AIndex);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBrushCache.SetBrushColor(var ABrush: TBrush; AColor: TColor);
|
|
begin
|
|
ReleaseBrush(ABrush);
|
|
ABrush := Add(AColor);
|
|
end;
|
|
|
|
function TcxBrushCache.Add(AColor: TColor): TBrush;
|
|
begin
|
|
if AColor and SysColorPrefix <> 0 then
|
|
Result := TBrush(SystemBrushes[AColor and not SysColorPrefix])
|
|
else
|
|
Result := AddItemAt(FindNearestItem(AColor), AColor);
|
|
Result.Color := AColor;
|
|
end;
|
|
|
|
function TcxBrushCache.AddItemAt(AIndex: Integer; AColor: TColor): TBrush;
|
|
var
|
|
Delta: Integer;
|
|
begin
|
|
if (AIndex >= FCount) or (FData[AIndex].Color <> AColor) then
|
|
begin
|
|
if FCapacity <= FCount then
|
|
begin
|
|
Delta := FCapacity shr 2;
|
|
if Delta < 8 then Delta := 8;
|
|
Inc(FCapacity, Delta);
|
|
SetLength(FData, FCapacity);
|
|
end;
|
|
if AIndex < FCount then Move(AIndex, AIndex + 1, FCount - AIndex);
|
|
InitItem(FData[AIndex], AColor);
|
|
Inc(FCount);
|
|
end
|
|
else
|
|
if FData[AIndex].RefCount = 0 then Dec(FDeletedCount);
|
|
Inc(FData[AIndex].RefCount);
|
|
Result := FData[AIndex].Brush;
|
|
end;
|
|
|
|
procedure TcxBrushCache.CacheCheck(Value: Boolean; const AMessage: string);
|
|
begin
|
|
if Value then
|
|
raise EBrushCache.Create(AMessage);
|
|
end;
|
|
|
|
procedure TcxBrushCache.Delete(AIndex: Integer);
|
|
begin
|
|
if FLockRef = 0 then
|
|
begin
|
|
FData[AIndex].Brush.Free;
|
|
Dec(FCount);
|
|
if AIndex < FCount then
|
|
Move(AIndex + 1, AIndex, FCount - AIndex);
|
|
end
|
|
else
|
|
Inc(FDeletedCount);
|
|
end;
|
|
|
|
function TcxBrushCache.IndexOf(AColor: TColor; out AIndex: Integer): Boolean;
|
|
begin
|
|
AIndex := -1;
|
|
if (AColor and SysColorPrefix = 0) then
|
|
AIndex := FindNearestItem(AColor);
|
|
Result := (AIndex >= 0) and (AIndex < FCount) and (FData[AIndex].Color = AColor);
|
|
end;
|
|
|
|
procedure TcxBrushCache.InitItem(var AItem: TcxBrushData; AColor: TColor);
|
|
begin
|
|
FillChar(AItem, BrushDataSize, 0);
|
|
AItem.Brush := TBrush.Create;
|
|
AItem.Brush.Color := AColor;
|
|
end;
|
|
|
|
function TcxBrushCache.IsSystemBrush(ABrush: TBrush): Boolean;
|
|
begin
|
|
Result := ABrush = nil;
|
|
Result := Result or ((ABrush.Color and SysColorPrefix) <> 0);
|
|
end;
|
|
|
|
function TcxBrushCache.FindNearestItem(AColor: TColor): Integer;
|
|
|
|
function Check(Min, Max: Integer): Integer;
|
|
begin
|
|
Result := Max;
|
|
if AColor <= FData[Min].Color then
|
|
Result := Min
|
|
else
|
|
if AColor > FData[Max].Color then
|
|
AColor := Max + 1;
|
|
end;
|
|
|
|
var
|
|
A, B, C: Integer;
|
|
begin
|
|
if FCount > 0 then
|
|
begin
|
|
A := 0;
|
|
B := FCount - 1;
|
|
if (FData[0].Color >= AColor) or (FData[B].Color <= AColor) then
|
|
Result := Check(A, B)
|
|
else
|
|
begin
|
|
while A < B do
|
|
begin
|
|
C := (A + B) shr 1;
|
|
with FData[C] do
|
|
begin
|
|
if Color < AColor then
|
|
A := C
|
|
else
|
|
if Color > AColor then
|
|
B := C
|
|
else
|
|
B := A;
|
|
end;
|
|
end;
|
|
Result := Check(A, B);
|
|
end;
|
|
end
|
|
else
|
|
Result := 0;
|
|
end;
|
|
|
|
procedure TcxBrushCache.Move(ASrc, ADst, ACount: Integer);
|
|
begin
|
|
System.Move(FData[ASrc], FData[ADst], ACount * BrushDataSize);
|
|
end;
|
|
|
|
procedure TcxBrushCache.Pack;
|
|
var
|
|
I, ACount: Integer;
|
|
begin
|
|
try
|
|
ACount := 0;
|
|
I := FCount - 1;
|
|
while (ACount < FDeletedCount) and (I >= 0) do
|
|
begin
|
|
if FData[I].RefCount < 0 then
|
|
begin
|
|
Delete(I);
|
|
Inc(ACount);
|
|
end;
|
|
Dec(I);
|
|
end;
|
|
finally
|
|
FDeletedCount := 0;
|
|
end;
|
|
end;
|
|
|
|
procedure TcxBrushCache.Recreate;
|
|
var
|
|
I: Integer;
|
|
begin
|
|
for I := 0 to FCount - 1 do
|
|
with FData[I] do Brush.Color := Color;
|
|
end;
|
|
|
|
procedure TcxBrushCache.Release(AIndex: Integer);
|
|
begin
|
|
Dec(FData[AIndex].RefCount);
|
|
if FData[AIndex].RefCount = 0 then Delete(AIndex);
|
|
end;
|
|
|
|
procedure InitSystemBrushes;
|
|
var
|
|
I: Word;
|
|
ABrush: TBrush;
|
|
begin
|
|
SystemBrushes := TList.Create;
|
|
for I := COLOR_SCROLLBAR to COLOR_ENDCOLORS do
|
|
begin
|
|
ABrush := TBrush.Create;
|
|
ABrush.Handle := GetSysColorBrush(I);
|
|
SystemBrushes.Add(ABrush);
|
|
end;
|
|
end;
|
|
|
|
procedure DestroySystemBrushes;
|
|
var
|
|
I: Integer;
|
|
begin
|
|
try
|
|
for I := 0 to SystemBrushes.Count - 1 do
|
|
TBrush(SystemBrushes[I]).Free;
|
|
finally
|
|
SystemBrushes.Free;
|
|
end;
|
|
end;
|
|
|
|
procedure InitPredefinedBrushes;
|
|
var
|
|
ABitmap: HBitmap ;
|
|
const
|
|
APattern: array[0..7] of Word =
|
|
($00AA, $0055, $00AA, $0055, $00AA, $0055, $00AA, $0055);
|
|
begin
|
|
cxHalfToneBrush := TBrush.Create;
|
|
InitSystemBrushes;
|
|
ABitmap := CreateBitmap(8, 8, 1, 1, @APattern);
|
|
cxHalfToneBrush.Handle := CreatePatternBrush(ABitmap);
|
|
DeleteObject(ABitmap);
|
|
end;
|
|
|
|
procedure DestroyPredefinedBrushes;
|
|
begin
|
|
DestroySystemBrushes;
|
|
{$IFDEF DELPHI9}
|
|
{$IFNDEF DELPHI10}
|
|
cxHalfToneBrush.Bitmap.Free;
|
|
{$ENDIF}
|
|
{$ENDIF}
|
|
cxHalfToneBrush.Free;
|
|
end;
|
|
|
|
var
|
|
ALib: Integer;
|
|
|
|
initialization
|
|
InitPredefinedBrushes;
|
|
ALib := LoadLibrary('msimg32.dll');
|
|
if ALib <> 0 then
|
|
VCLAlphaBlend := GetProcAddress(ALib, 'AlphaBlend')
|
|
else
|
|
VCLAlphaBlend := nil;
|
|
|
|
finalization
|
|
if ALib <> 0 then FreeLibrary(ALib);
|
|
DestroyPredefinedBrushes;
|
|
FreeAndNil(ScreenCanvas);
|
|
FreeAndNil(MaskBitmap);
|
|
FreeAndNil(ImageBitmap);
|
|
FreeAndNil(DrawBitmap);
|
|
|
|
end.
|