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| unit IconLoader_MainForm;
interface
uses
(*Winapi.*)Windows, (*Winapi.*)
(*System.*)SysUtils, (*System.*)Variants, (*System.*)Classes,
(*Vcl.*)Graphics, (*Vcl.*)Controls, (*Vcl.*)Forms,
(*Vcl.*)Dialogs, (*Vcl.*)StdCtrls, Vcl.ExtCtrls;
type
TIconLoaderMainForm = class(TForm)
btnLoad: TButton;
OpenDialogIcon: TOpenDialog;
ImageDefault: TImage;
ScrollBoxSubIcons: TScrollBox;
lblImageDefaultResolution: TLabel;
procedure btnLoadClick(Sender: TObject);
private
{ Déclarations privées }
public
{ Déclarations publiques }
end;
var
IconLoaderMainForm: TIconLoaderMainForm;
implementation
uses
(*System.*)Math,
(*System.Generics.Collections, *)(*System.*)Contnrs;
type
TIconMulti = class(TIcon)
private
FIcons: TObjectList(*<TIcon>*);
function GetIconCount(): Integer;
function GetIcon(Index: Integer): TIcon;
public
constructor Create(); override;
destructor Destroy(); override;
procedure LoadFromStream(Stream: TStream); override;
property IconCount: Integer read GetIconCount;
property Icons[Index: Integer]: TIcon read GetIcon;
end;
{$R *.dfm}
procedure TIconLoaderMainForm.btnLoadClick(Sender: TObject);
var
LIcon: TIconMulti;
LSubIcon: TIcon;
I, Y: Integer;
PanelSub: TPanel;
LabelSub: TLabel;
ImageSub: TImage;
DefaultRes: string;
begin
ImageDefault.Picture.Bitmap.Assign(nil);
for I := ScrollBoxSubIcons.ControlCount - 1 downto 0 do
ScrollBoxSubIcons.Controls[I].Free();
// OpenDialogIcon.FileName := 'C:\Program Files (x86)\Embarcadero\Studio\17.0\Images\Default\Default.ico';
// OpenDialogIcon.FileName := 'C:\Program Files (x86)\Embarcadero\Studio\17.0\bin\delphi_PROJECTICON.ico';
if OpenDialogIcon.Execute then
begin
LIcon := TIconMulti.Create();
try
DefaultRes := Format('%d x %d', [LIcon.Width, LIcon.Height]);
LIcon.LoadFromFile(OpenDialogIcon.FileName);
ImageDefault.Width := LIcon.Width;
ImageDefault.Height := LIcon.Height;
ImageDefault.Picture.Bitmap.Assign(LIcon);
lblImageDefaultResolution.Caption := Format('%d x %d (Expected: %s)', [LIcon.Width, LIcon.Height, DefaultRes]);
Y := 0;
for I := 0 to LIcon.IconCount - 1 do
begin
LSubIcon := LIcon.Icons[I];
PanelSub := TPanel.Create(Self);
LabelSub := TLabel.Create(Self);
ImageSub := TImage.Create(Self);
ImageSub.Width := LSubIcon.Width;
ImageSub.Height := LSubIcon.Height;
ImageSub.Picture.Bitmap.Assign(LSubIcon);
LabelSub.Caption := Format('%d x %d', [LSubIcon.Width, LSubIcon.Height]);
PanelSub.Parent := ScrollBoxSubIcons;
LabelSub.Parent := PanelSub;
LabelSub.Align := alTop;
ImageSub.Parent := PanelSub;
ImageSub.Align := alClient;
PanelSub.ClientHeight := LSubIcon.Height + LabelSub.Height + 8;
PanelSub.ClientWidth := Max(LSubIcon.Width, LabelSub.Canvas.TextWidth(LabelSub.Caption)) + 8;
PanelSub.Left := 4;
PanelSub.Top := Y;
Inc(Y, PanelSub.Height);
end;
finally
LIcon.Free();
end;
end;
end;
{ TIconMulti }
constructor TIconMulti.Create();
begin
inherited Create();
FIcons := TObjectList(*<TIcon>*).Create(True);
end;
destructor TIconMulti.Destroy();
begin
FreeAndNil(FIcons);
inherited Destroy();
end;
function TIconMulti.GetIcon(Index: Integer): TIcon;
begin
Result := FIcons[Index] as TIcon;
end;
function TIconMulti.GetIconCount(): Integer;
begin
Result := FIcons.Count;
end;
procedure TIconMulti.LoadFromStream(Stream: TStream);
type
PIconRecArray = ^TIconRecArray;
TIconRecArray = array[0..300] of TIconRec;
var
CI: TCursorOrIcon;
I: Integer;
HeaderLen: Integer;
ListIcon: PIconRecArray;
SubIcon: TIcon;
begin
FIcons.Clear();
inherited LoadFromStream(Stream);
Stream.Seek(0, soBeginning); // ou soFromBeginning en D6
Stream.ReadBuffer(CI, SizeOf(CI));
if CI.wType = RC3_ICON then
begin
HeaderLen := SizeOf(TIconRec) * CI.Count;
ListIcon := AllocMem(HeaderLen);
try
Stream.Read(ListIcon^, HeaderLen);
for I := 0 to CI.Count - 1 do
begin
SubIcon := TIcon.Create();
try
SubIcon.Width := ListIcon^[I].Width;
SubIcon.Height := ListIcon^[I].Height;
Stream.Seek(0, soBeginning); // ou soFromBeginning en D6
SubIcon.LoadFromStream(Stream);
FIcons.Add(SubIcon);
except
SubIcon.Free();
raise;
end;
end;
finally
FreeMem(ListIcon, HeaderLen);
end;
end;
end;
end. |
