320 lines
8.3 KiB
ObjectPascal
320 lines
8.3 KiB
ObjectPascal
{-----------------------------------------------------------------------------
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The contents of this file are subject to the Mozilla Public License
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Version 1.1 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.mozilla.org/MPL/MPL-1.1.html
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
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the specific language governing rights and limitations under the License.
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The Original Code is: JvImageWindow.PAS, released on 2002-05-26.
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The Initial Developer of the Original Code is Peter Thörnqvist [peter3 at sourceforge dot net]
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Portions created by Peter Thörnqvist are Copyright (C) 2002 Peter Thörnqvist.
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All Rights Reserved.
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Contributor(s):
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You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
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located at http://jvcl.sourceforge.net
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Known Issues:
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-----------------------------------------------------------------------------}
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// $Id: JvImageSquare.pas,v 1.14 2005/02/17 10:20:37 marquardt Exp $
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unit JvImageSquare;
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{$I jvcl.inc}
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interface
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uses
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{$IFDEF UNITVERSIONING}
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JclUnitVersioning,
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{$ENDIF UNITVERSIONING}
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SysUtils, Classes, Windows, Messages, Graphics, Controls, ImgList, Forms,
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JvComponent;
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type
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TJvImageSquare = class(TJvGraphicControl)
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private
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FHiColor: TColor;
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FTmpColor: TColor;
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FBackColor: TColor;
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FBorderStyle: TBorderStyle;
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FImageList: TCustomImageList;
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FIndex: Integer;
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FDown: Boolean;
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FShowClick: Boolean;
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FImageChangeLink: TChangeLink;
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procedure SetHiColor(Value: TColor);
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procedure SetBorderStyle(Value: TBorderStyle);
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procedure SetIndex(Value: Integer);
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procedure SetImageList(Value: TCustomImageList);
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procedure ImageListChange(Sender: TObject);
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protected
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procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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procedure MouseEnter(Control: TControl); override;
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procedure MouseLeave(Control: TControl); override;
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procedure ColorChanged; override;
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procedure PaintFrame; virtual;
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procedure Paint; override;
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procedure Notification(AComponent: TComponent; Operation: TOperation); override;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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published
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property Color default clWindow;
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property BorderStyle: TBorderStyle read FBorderStyle write SetBorderStyle default bsSingle;
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property HiColor: TColor read FHiColor write SetHiColor default clActiveCaption;
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property Images: TCustomImageList read FImageList write SetImageList;
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property ImageIndex: Integer read FIndex write SetIndex default 0;
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property ShowClick: Boolean read FShowClick write FShowClick default False;
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property Width default 36;
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property Height default 36;
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property Align;
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property Anchors;
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property Action;
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property Text;
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property Visible;
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property Enabled;
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{$IFDEF VCL}
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property DragCursor;
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{$ENDIF VCL}
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property DragMode;
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property PopupMenu;
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property ParentShowHint;
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property Hint;
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property ShowHint;
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property OnMouseEnter;
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property OnMouseLeave;
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property OnClick;
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property OnMouseDown;
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property OnMouseMove;
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property OnMouseUp;
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property OnDragDrop;
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property OnDragOver;
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property OnEndDrag;
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property OnStartDrag;
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end;
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{$IFDEF UNITVERSIONING}
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const
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UnitVersioning: TUnitVersionInfo = (
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RCSfile: '$RCSfile: JvImageSquare.pas,v $';
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Revision: '$Revision: 1.14 $';
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Date: '$Date: 2005/02/17 10:20:37 $';
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LogPath: 'JVCL\run'
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);
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{$ENDIF UNITVERSIONING}
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implementation
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uses
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{$IFDEF VCL}
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ExtCtrls, CommCtrl,
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{$ENDIF VCL}
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{$IFDEF VisualCLX}
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QExtCtrls,
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{$ENDIF VisualCLX}
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JvThemes, JvResources;
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//=== { TJvImageSquare } =====================================================
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constructor TJvImageSquare.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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FHiColor := clActiveCaption;
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Color := clWindow;
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FTmpColor := clWindow;
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FBackColor := clWindow;
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FIndex := 0;
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FDown := False;
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FShowClick := False;
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Width := 36;
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Height := 36;
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FBorderStyle := bsSingle;
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FImageChangeLink := TChangeLink.Create;
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FImageChangeLink.OnChange := ImageListChange;
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end;
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destructor TJvImageSquare.Destroy;
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begin
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FImageChangeLink.Free;
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inherited Destroy;
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end;
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procedure TJvImageSquare.ImageListChange(Sender: TObject);
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begin
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Repaint;
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end;
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procedure TJvImageSquare.Notification(AComponent: TComponent; Operation: TOperation);
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begin
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if (AComponent = FImageList) and (Operation = opRemove) then
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FImageList := nil;
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end;
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procedure TJvImageSquare.PaintFrame;
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var
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R: TRect;
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begin
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R := GetClientRect;
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if FDown and FShowClick then
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begin
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Frame3D(Canvas, R, cl3DDkShadow, cl3DDkShadow, 1);
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Frame3D(Canvas, R, clBtnHighLight, clBtnHighLight, 1);
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Frame3D(Canvas, R, cl3DDkShadow, cl3DDkShadow, 1);
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end
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else
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{$IFDEF JVCLThemesEnabled}
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if (FBorderStyle = bsSingle) and ThemeServices.ThemesEnabled then
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DrawThemedBorder(Self)
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else
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{$ENDIF JVCLThemesEnabled}
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if FBorderStyle = bsSingle then
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begin
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Frame3D(Canvas, R, clBtnFace, clBtnFace, 1);
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Frame3D(Canvas, R, clBtnShadow, clBtnHighLight, 1);
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Frame3D(Canvas, R, cl3DDkShadow, clBtnFace, 1);
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end
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else
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Frame3D(Canvas, R, FHiColor, FHiColor, 3);
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end;
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procedure TJvImageSquare.Paint;
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var
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R: TRect;
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DX, DY: Integer;
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begin
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R := Rect(0, 0, Width, Height);
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if FBorderStyle = bsSingle then
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begin
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PaintFrame;
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InflateRect(R, -3, -3);
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end;
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{ fill in the rest }
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with Canvas do
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begin
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Brush.Color := FTmpColor;
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Brush.Style := bsSolid;
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FillRect(R);
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end;
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if Assigned(FImageList) then
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begin
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{ draw in middle }
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DX := (Width - FImageList.Width) div 2;
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DY := (Height - FImageList.Height) div 2;
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{$IFDEF VCL}
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ImageList_DrawEx(FImageList.Handle, FIndex, Canvas.Handle,
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DX, DY, 0, 0, CLR_NONE, CLR_NONE, ILD_TRANSPARENT);
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{$ENDIF VCL}
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{$IFDEF VisualCLX}
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FImageList.Draw(Canvas, DX, DY, FIndex);
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{$ENDIF VisualCLX}
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end;
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end;
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procedure TJvImageSquare.SetHiColor(Value: TColor);
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begin
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if FHiColor <> Value then
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begin
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FHiColor := Value;
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Repaint;
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end;
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end;
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procedure TJvImageSquare.SetBorderStyle(Value: TBorderStyle);
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begin
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if FBorderStyle <> Value then
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begin
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FBorderStyle := Value;
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Repaint;
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end;
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end;
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procedure TJvImageSquare.SetIndex(Value: Integer);
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begin
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if FIndex <> Value then
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begin
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FIndex := Value;
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Repaint;
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end;
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end;
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procedure TJvImageSquare.SetImageList(Value: TCustomImageList);
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begin
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if Images <> nil then
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Images.UnRegisterChanges(FImageChangeLink);
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FImageList := Value;
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if Images <> nil then
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FImageList.RegisterChanges(FImageChangeLink);
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Repaint;
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end;
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procedure TJvImageSquare.MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
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begin
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inherited MouseUp(Button, Shift, X, Y);
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FDown := False;
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if FShowClick then
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PaintFrame;
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end;
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procedure TJvImageSquare.MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
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begin
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inherited MouseDown(Button, Shift, X, Y);
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FDown := True;
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if FShowClick then
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PaintFrame;
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end;
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procedure TJvImageSquare.MouseEnter(Control: TControl);
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begin
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if csDesigning in ComponentState then
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Exit;
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inherited MouseEnter(Control);
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if ColorToRGB(FTmpColor) <> ColorToRGB(FHiColor) then
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begin
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FTmpColor := FHiColor;
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Repaint;
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end;
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end;
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procedure TJvImageSquare.MouseLeave(Control: TControl);
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begin
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FDown := False;
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if csDesigning in ComponentState then
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Exit;
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inherited MouseLeave(Control);
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if ColorToRGB(FTmpColor) <> ColorToRGB(FBackColor) then
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begin
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FTmpColor := FBackColor;
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Repaint;
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end;
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end;
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procedure TJvImageSquare.ColorChanged;
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begin
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inherited ColorChanged;
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FBackColor := Color;
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FTmpColor := Color;
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Repaint;
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end;
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{$IFDEF UNITVERSIONING}
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initialization
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RegisterUnitVersion(HInstance, UnitVersioning);
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finalization
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UnregisterUnitVersion(HInstance);
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{$ENDIF UNITVERSIONING}
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end.
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