mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
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899c458ad0
- implemented TPicture saving to different format - improved picture formats management, added more JPEG extensions LCL picture dialogs: - added function for retrieving extension from selected filter git-svn-id: trunk@15653 -
141 lines
4.0 KiB
ObjectPascal
141 lines
4.0 KiB
ObjectPascal
{
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*****************************************************************************
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* *
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* See the file COPYING.modifiedLGPL, included in this distribution, *
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* for details about the copyright. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
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* *
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*****************************************************************************
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Author: Tomas Gregorovic
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Abstract:
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This units defines the Load Image Dialog (TGraphicPropertyEditorForm)
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for graphic or picture property editor.
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}
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unit GraphicPropEdit;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, StdCtrls,
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ExtCtrls, Buttons, ButtonPanel, ExtDlgs,
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IDEDialogs, ObjInspStrConsts;
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type
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{ TGraphicPropertyEditorForm }
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TGraphicPropertyEditorForm = class(TForm)
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OkCancelButtonPanel: TButtonPanel;
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ImagePreview: TImage;
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LoadButton: TButton;
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LoadSaveBtnPanel: TPanel;
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OpenDialog: TOpenPictureDialog;
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SaveButton: TButton;
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ClearButton: TButton;
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GroupBox1: TGroupBox;
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SaveDialog: TSavePictureDialog;
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ScrollBox: TScrollBox;
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procedure ClearButtonClick(Sender: TObject);
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procedure FormCreate(Sender: TObject);
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procedure LoadButtonClick(Sender: TObject);
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procedure SaveButtonClick(Sender: TObject);
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private
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FModified: Boolean;
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procedure SetModified(const AValue: Boolean);
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{ private declarations }
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public
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FileName: String;
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property Modified: Boolean read FModified write SetModified;
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property Preview: TImage read ImagePreview write ImagePreview;
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end;
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var
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GraphicPropertyEditorForm: TGraphicPropertyEditorForm;
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implementation
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{ TGraphicPropertyEditorForm }
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procedure TGraphicPropertyEditorForm.FormCreate(Sender: TObject);
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begin
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FileName := '';
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Caption := oisLoadImageDialog;
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GroupBox1.Caption:=oisPEPicture;
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OkCancelButtonPanel.OKButton.Caption := oisOK;
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OkCancelButtonPanel.CancelButton.Caption := oisCancel;
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LoadButton.Caption := oisLoad;
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SaveButton.Caption := oisSave;
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ClearButton.Caption := oisClear;
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OpenDialog.Title:=oisPEOpenImageFile;
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SaveDialog.Title:=oisPESaveImageAs;
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end;
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procedure TGraphicPropertyEditorForm.ClearButtonClick(Sender: TObject);
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begin
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with Preview do
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begin
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Picture.Clear;
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end;
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ScrollBox.Invalidate;
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SaveButton.Enabled := False;
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Modified := True;
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end;
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procedure TGraphicPropertyEditorForm.LoadButtonClick(Sender: TObject);
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begin
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InitIDEFileDialog(OpenDialog);
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if OpenDialog.Execute then
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begin
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FileName := OpenDialog.FileName;
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try
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Preview.Picture.LoadFromFile(FileName);
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Modified := True;
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except
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on E: Exception do begin
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MessageDlg(oisErrorLoadingImage,
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Format(oisErrorLoadingImage2, ['"', FileName, '"', #13, E.Message]),
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mtError, [mbOk], 0);
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exit;
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end;
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end;
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end;
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StoreIDEFileDialog(OpenDialog);
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SaveButton.Enabled := False;
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if Assigned(Preview.Picture.Graphic) then
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if not Preview.Picture.Graphic.Empty then
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SaveButton.Enabled := True;
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end;
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procedure TGraphicPropertyEditorForm.SaveButtonClick(Sender: TObject);
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begin
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InitIDEFileDialog(SaveDialog);
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if SaveDialog.Execute then
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if SaveDialog.FilterIndex > 1 then
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Preview.Picture.SaveToFile(SaveDialog.FileName, SaveDialog.GetFilterExt)
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else
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Preview.Picture.SaveToFile(SaveDialog.FileName);
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StoreIDEFileDialog(SaveDialog);
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end;
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procedure TGraphicPropertyEditorForm.SetModified(const AValue: Boolean);
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begin
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if FModified = AValue then Exit;
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FModified := AValue;
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end;
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initialization
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{$I graphicpropedit.lrs}
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end.
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