179 lines
5.7 KiB
ObjectPascal
179 lines
5.7 KiB
ObjectPascal
{********************************************************************}
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{ }
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{ Developer Express Visual Component Library }
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{ ExpressQuantumGrid }
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{ }
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{ Copyright (c) 1998-2009 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 EXPRESSQUANTUMGRID AND ALL }
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{ ACCOMPANYING VCL CONTROLS AS PART OF AN EXECUTABLE PROGRAM 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 cxGridCommon;
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{$I cxVer.inc}
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interface
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uses
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Classes, Graphics, cxGraphics, cxControls, cxLookAndFeelPainters,
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Windows;
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const
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ScxGridPrefixName = 'TcxGrid';
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cxGridInvisibleCoordinate = 30000{100000};
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cxGridCellTextOffset = 2;
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cxGridEditOffset = 1;
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cxGridHeaderTextOffset = 2;
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type
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TcxGridCellState = (gcsNone, gcsSelected, gcsPressed);
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TcxGridClassEnumeratorProc = procedure(AClass: TClass) of object;
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{ custom change }
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TcxCustomGridChange = class
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private
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FControl: TcxControl;
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public
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function CanExecuteWhenLocked: Boolean; virtual;
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procedure Execute; virtual; abstract;
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function IsCompatibleWith(AChange: TcxCustomGridChange): Boolean; virtual;
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function IsCumulative: Boolean; virtual;
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function IsEqual(AChange: TcxCustomGridChange): Boolean; virtual;
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function IsLockable: Boolean; virtual;
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property Control: TcxControl read FControl write FControl; // TcxCustomGrid
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end;
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{ custom drag open info }
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TcxCustomGridDragOpenInfo = class
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public
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function Equals(AInfo: TcxCustomGridDragOpenInfo): Boolean; virtual;
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procedure Run; virtual; abstract;
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end;
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function GetValidName(AComponent: TComponent; const AName: string;
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AIsBaseName: Boolean = False): string;
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procedure GetCellTextAreaSize(var ATextSize: Integer);
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function GridCellStateToButtonState(ACellState: TcxGridCellState): TcxButtonState;
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implementation
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{$R cxGrid.res}
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uses
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Controls, Forms, SysUtils, cxLibraryConsts;
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{ TcxCustomGridChange }
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function TcxCustomGridChange.CanExecuteWhenLocked: Boolean;
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begin
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Result:= True;
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end;
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function TcxCustomGridChange.IsCompatibleWith(AChange: TcxCustomGridChange): Boolean;
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begin
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Result := False;
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end;
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function TcxCustomGridChange.IsCumulative: Boolean;
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begin
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Result := True;
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end;
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function TcxCustomGridChange.IsEqual(AChange: TcxCustomGridChange): Boolean;
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begin
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Result := ClassType = AChange.ClassType;
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end;
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function TcxCustomGridChange.IsLockable: Boolean;
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begin
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Result := True;
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end;
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{ TcxCustomGridDragOpenInfo }
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function TcxCustomGridDragOpenInfo.Equals(AInfo: TcxCustomGridDragOpenInfo): Boolean;
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begin
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Result := ClassType = AInfo.ClassType;
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end;
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{ functions }
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function GetValidName(AComponent: TComponent; const AName: string;
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AIsBaseName: Boolean = False): string;
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var
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AOwner: TComponent;
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I: Integer;
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function GetNextName: string;
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begin
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Result := AName + IntToStr(I);
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Inc(I);
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end;
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begin
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Result := AName;
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AOwner := AComponent.Owner;
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if AOwner = nil then Exit;
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I := 1;
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if AIsBaseName then Result := GetNextName;
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while AOwner.FindComponent(Result) <> nil do
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Result := GetNextName;
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end;
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procedure GetCellTextAreaSize(var ATextSize: Integer);
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begin
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Inc(ATextSize, 2 * cxGridCellTextOffset);
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end;
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function GridCellStateToButtonState(ACellState: TcxGridCellState): TcxButtonState;
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const
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ButtonStates: array[TcxGridCellState] of TcxButtonState =
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(cxbsNormal, cxbsHot, cxbsPressed);
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begin
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Result := ButtonStates[ACellState];
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end;
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initialization
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crcxGridHorzSize := crcxHorzSize;
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crcxGridVertSize := crcxVertSize;
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crcxGridRemove := crcxRemove;
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crcxGridNoDrop := crcxNoDrop;
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crcxGridDrag := crcxDrag;
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crcxGridMultiDrag := crcxDragMulti;
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Screen.Cursors[crcxGridSelectRow] := LoadCursor(HInstance, 'CX_GRIDSELECTROWCURSOR');
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end.
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