On Thu, 22 Apr 2004, Alan Mead wrote:
> What is the easiest way to create PNG or JPG images from within a FPC
> program? Ideally, in a cross-platform way although I mostly use
> Linux. Thanks!
Very easy.
Roughly like this:
uses fpimage,fpcanvas,fpwritepng, fpwritejpg;
Var
Image : TMemoryImage;
Canvas : TFPimageCanvas;
begin
// Create image,
Image:=TMemoryImage.Create(640,480);
Image.PaletteBased:=False;
// Create canvas.
Canvas:=TFPImageCanvas.Create(Image);
Canvas.Pen.Color:=colRed;
Canvas.Circle(100,100,50);
Canvas.Rectangle(50,50,150,150);
// Free canvas
Canvas.Free;
Image.SaveToFile('myfile.png'); // Write as png
Image.SaveToFile('myfile.jpg'); // Alternatively, write as jpg
// Free Image.
Image.Free;
end.
See the fcl/image directory for all needed units.
Supported are bmp,png,jpg,xpm and PPM/PBM.
There is no documentation yet, but I can provide some examples and explanations.
This is fully cross-platform.
Michael.
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