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unit Unit1;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Forms, Controls, Graphics, GraphType, ExtCtrls, StdCtrls,
ExtDlgs, LazUTF8;
type
{ TForm1 }
TForm1 = class(TForm)
Button1: TButton;
GroupBox1: TGroupBox;
GroupBox2: TGroupBox;
GroupBox3: TGroupBox;
GroupBox4: TGroupBox;
GroupBox5: TGroupBox;
Image1: TImage;
Image2: TImage;
Image3: TImage;
Image4: TImage;
Image5: TImage;
ImageList1: TImageList;
ListBox1: TListBox;
OpenPictureDialog1: TOpenPictureDialog;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
function GetImageMap(AEffect: TGraphicsDrawEffect): TImage;
procedure ListBox1SelectionChange(Sender: TObject; User: boolean);
private
public
procedure ShowImages(AIndex: Integer);
procedure AddFile(AFileName: String);
property ImageMap[AEffect: TGraphicsDrawEffect]: TImage read GetImageMap;
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
{ TForm1 }
function LoadBitmapFromFile(AFileName: String): TCustomBitmap;
var
Stream: TStream;
GraphicClass: TGraphicClass;
begin
Result := nil;
Stream := nil;
try
Stream := TFileStream.Create(UTF8ToSys(AFileName), fmOpenRead or fmShareDenyNone);
GraphicClass := GetGraphicClassForFileExtension(ExtractFileExt(AFileName));
if (GraphicClass <> nil) and (GraphicClass.InheritsFrom(TCustomBitmap)) then
begin
Result := TCustomBitmap(GraphicClass.Create);
Result.LoadFromStream(Stream);
end;
finally
Stream.Free;
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
AddFile(ExtractFilePath(ParamStrUTF8(0)) + SetDirSeparators('images/edit-clear.png'));
AddFile(ExtractFilePath(ParamStrUTF8(0)) + SetDirSeparators('images/edit-find-replace.png'));
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
if OpenPictureDialog1.Execute then
AddFile(OpenPictureDialog1.FileName);
end;
function TForm1.GetImageMap(AEffect: TGraphicsDrawEffect): TImage;
begin
case AEffect of
gdeNormal: Result := Image1;
gdeDisabled: Result := Image2;
gdeHighlighted: Result := Image3;
gdeShadowed: Result := Image4;
gde1Bit: Result := Image5;
else
Result := nil;
end;
end;
procedure TForm1.ListBox1SelectionChange(Sender: TObject; User: boolean);
begin
if ListBox1.ItemIndex <> -1 then
ShowImages(ListBox1.ItemIndex);
end;
procedure TForm1.ShowImages(AIndex: Integer);
var
AEffect: TGraphicsDrawEffect;
Bmp: TBitmap;
begin
for AEffect := Low(TGraphicsDrawEffect) to High(TGraphicsDrawEffect) do
begin
Bmp := TBitmap.Create;
ImageList1.GetBitmap(AIndex, Bmp, AEffect);
if ImageMap[AEffect] <> nil then
ImageMap[AEffect].Picture.Assign(Bmp);
Bmp.Free;
end;
end;
procedure TForm1.AddFile(AFileName: String);
var
bmp: TCustomBitmap;
begin
bmp := LoadBitmapFromFile(AFileName);
if bmp <> nil then
begin
ImageList1.Add(bmp, nil);
ListBox1.Items.Add(ExtractFileName(AFileName));
if ListBox1.ItemIndex = -1 then
ListBox1.ItemIndex := 0;
end;
bmp.Free;
end;
end.
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