Question

This is what I need: Program for quicker making fun posters for facebook page.
Posters have text, picture and frame (white line and black background).
In this case, I want to insert logo on poster (png image).

Depending on picture size, dimensions of frame (who in this case consits of two shapes) must automaticly be resized for picture.

How to save poster from that image from link (2 shape components, 2 image components, 2 labels) as picture?

How to accomplish this? What to use, where to begin?

I hope that this question will not be removed.

Answer 1

If you put all the frames, shapes and pictures inside a new TPanel (named MainPanel in my sample), then you could use:

procedure savePanelAsImage(fpPanel: tPanel; fpFileName: string);
var
   img: TBitmap;
begin
   img := TBitmap.Create;
   try
     img.Width := fpPanel.Width;
     img.Height := fpPanel.Height;
     fpPanel.PaintTo(img.Canvas, 0, 0);
     img.SaveToFile(fpFileName);
   finally
     img.Free;
   end
end;

Usage:

savePanelAsImage(MainPanel, 'd:\someFolder\image001.bmp');

Notes:

• This is VCL based sample;
• To save the image in other format (rather in BMP) use: TPngImage (Vcl.Imaging.pngImage) or TJPEGImage (Vcl.Imaging.jpeg);
• If you use FireMonkey (>= Delphi XE2) you can take advantage of someParentComponent.MakeScreenShot();
• The resulting image will have the same size as the tPanel.

For better results / flexibility I would suggest using Graphics32 library for Delphi (it supports layers, image re-sizing etc.).