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unit DessinerEtEcrire;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, Jpeg, ExtCtrls, Menus;
type
TForm1 = class(TForm)
MainMenu1: TMainMenu;
MnFichier: TMenuItem;
MnOuvrir: TMenuItem;
Panel2: TPanel;
ScrollBox1: TScrollBox;
Image1: TImage;
procedure FormPaint(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
private
Graph: TBitmap;
public
{ Déclarations publiques }
procedure ChargementJPEGversBMP(FichierEntree :string; H,W : integer);
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.ChargementJPEGversBMP(FichierEntree : string; H,W : integer);
var ImageJPEG : TJPEGImage;
ImageBitmap : TBitmap;
begin
ImageJPEG := TJPEGImage.Create;
try
ImageJPEG.LoadFromFile(FichierEntree); //Chargement de l'image
ImageBitmap := TBitmap.Create;
try
{ jpeg sur le canvas du Bitmap }
ImageBitmap.Width := ImageJPEG.Width;
ImageBitmap.Height := ImageJPEG.Height;
Graph.Canvas.Draw(H,W,ImageJPEG);
finally
ImageBitmap.Free;
end;
finally
ImageJPEG.Free;
end;
end;
procedure TForm1.FormPaint(Sender: TObject);
begin
if Assigned(Graph) then
begin
with Image1.Canvas do
begin
Draw(0,0,Graph); // Affichage des images cumulées dans le Graph
Font.Color:=clRed;
Brush.Style:= bsSolid;
Font.Size:=14;
TextOut(10,10,'Voici du texte');
Rectangle(100,100,200,200);
Font.Height:=30;
TextOut(110,110,'Ceci est un autre texte');
end;
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
var ChnRep : string;
begin
Graph:=TBitmap.Create; // variable de type TBitmap
ChnRep:=ExtractFilePath(Application.ExeName);
Graph.Width:=ScrollBox1.HorzScrollBar.Range;
Graph.Height:=ScrollBox1.VertScrollBar.Range;
ChargementJPEGversBMP(ChnRep + 'iceland.jpg',10,10);
ChargementJPEGversBMP(ChnRep + 'texture_a.jpg',300,100);
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
FreeAndNil(Graph);
end;
end. |
