david
08e42642b8
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.DevExpressVCL@21 05c56307-c608-d34a-929d-697000501d7a
123 lines
3.5 KiB
ObjectPascal
123 lines
3.5 KiB
ObjectPascal
unit CustomRowHeightDemoMain;
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{$I ..\..\cxVer.inc}
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interface
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uses
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Windows, Forms, Messages, SysUtils, Classes, ActnList, ImgList, Controls, Menus,
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StdCtrls, cxButtons, cxCheckBox, cxContainer, cxEdit, cxTextEdit,
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cxMaskEdit, cxSpinEdit, ExtCtrls, cxGridLevel, cxGridCustomTableView,
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cxGridCardView, cxGridDBCardView, cxClasses, cxControls,
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cxGridCustomView, cxGrid, ComCtrls, cxStyles, cxCustomData, cxGraphics,
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cxFilter, cxData, DB, cxDBData, cxDataStorage, cxLookAndFeelPainters,
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cxLookAndFeels, cxHyperLinkEdit, cxImageComboBox, cxDBLookupComboBox,
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cxMemo, cxImage, cxGridTableView, cxGridDBTableView;
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type
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TCustomRowHeightDemoMainForm = class(TForm)
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mmMain: TMainMenu;
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miAbout: TMenuItem;
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miFile: TMenuItem;
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miOptions: TMenuItem;
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miExit: TMenuItem;
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sbMain: TStatusBar;
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lbDescrip: TLabel;
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LookAndFeelController: TcxLookAndFeelController;
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Grid: TcxGrid;
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tvFilms: TcxGridDBTableView;
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tvFilmsCAPTION: TcxGridDBColumn;
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tvFilmsPLOTOUTLINE: TcxGridDBColumn;
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tvFilmsPHOTO: TcxGridDBColumn;
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lvFilms: TcxGridLevel;
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miPictureZoom: TMenuItem;
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miZoom100perc: TMenuItem;
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miZoom75perc: TMenuItem;
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miZoom50perc: TMenuItem;
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miZoom25perc: TMenuItem;
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procedure miAboutClick(Sender: TObject);
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procedure miExitClick(Sender: TObject);
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procedure miZoomClick(Sender: TObject);
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procedure tvFilmsGetCellHeight(Sender: TcxCustomGridTableView;
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ARecord: TcxCustomGridRecord; AItem: TcxCustomGridTableItem;
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ACellViewInfo: TcxGridTableDataCellViewInfo; var AHeight: Integer);
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private
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FCurrentZoom: Integer;
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function GetZoomByMenuItem(AMenuItemIndex: Integer): Integer;
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public
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constructor Create(AOwner: TComponent); override;
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end;
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var
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CustomRowHeightDemoMainForm: TCustomRowHeightDemoMainForm;
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implementation
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{$R *.dfm}
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uses
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{$IFDEF DELPHI6}
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Variants,
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{$ENDIF}
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CustomRowHeightDemoData, Dialogs, AboutDemoForm, Graphics, cxVariants;
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constructor TCustomRowHeightDemoMainForm.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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FCurrentZoom := 50;
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end;
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procedure TCustomRowHeightDemoMainForm.miAboutClick(Sender: TObject);
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begin
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ShowAboutDemoForm;
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end;
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procedure TCustomRowHeightDemoMainForm.miExitClick(Sender: TObject);
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begin
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Close;
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end;
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procedure TCustomRowHeightDemoMainForm.miZoomClick(Sender: TObject);
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begin
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TMenuItem(Sender).Checked := True;
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FCurrentZoom := GetZoomByMenuItem(TMenuItem(Sender).MenuIndex);
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tvFilms.SizeChanged;
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end;
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procedure TCustomRowHeightDemoMainForm.tvFilmsGetCellHeight(
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Sender: TcxCustomGridTableView; ARecord: TcxCustomGridRecord;
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AItem: TcxCustomGridTableItem;
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ACellViewInfo: TcxGridTableDataCellViewInfo; var AHeight: Integer);
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var
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AEditValue: Variant;
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APicture: TPicture;
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begin
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if AItem <> tvFilmsPHOTO then
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begin
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AHeight := 0;
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Exit;
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end;
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AEditValue := ARecord.Values[tvFilmsPHOTO.Index];
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if VarIsStr(AEditValue) then
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begin
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APicture := TPicture.Create;
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try
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LoadPicture(APicture,
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TcxImageProperties(tvFilmsPHOTO.Properties).GraphicClass, AEditValue);
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AHeight := APicture.Height;
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AHeight := AHeight * FCurrentZoom div 100;
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finally
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APicture.Free;
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end;
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end;
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end;
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function TCustomRowHeightDemoMainForm.GetZoomByMenuItem(AMenuItemIndex: Integer): Integer;
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const
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Zoom: array[0..3] of Integer = (100, 75, 50, 25);
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begin
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Result := Zoom[AMenuItemIndex];
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end;
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end.
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