Image Tiling in Delphi for Backgrounds and TexturesA short code snippet in Delphi which will do image tiling in Delphi which is useful when you want an application to have background texture.
How to do Image Tiling in Delphi. This procedure will take a TImage instance loaded with a bitmap, and tile it over the area of the destination. Use for creating seamless background textures on forms or controls.
pascal
procedure TileImage(SourceImage, DestImage: TImage);
var
XCnt, YCnt, X, Y: Integer;
BevelSize, SaveIndex: Integer;
Rect: TRect;
begin
if (SourceImage.Picture.Graphic <> nil) and (SourceImage.Width > 0) and
(SourceImage.Height > 0) then
begin
Rect := DestImage.ClientRect;
//BevelSize := BorderWidth;
//if BevelOuter <> bvNone then Inc(BevelSize, BevelWidth);
//if BevelInner <> bvNone then Inc(BevelSize, BevelWidth);
//InflateRect(Rect, -BevelSize, -BevelSize);
SaveIndex := SaveDC(DestImage.Canvas.Handle);
try
IntersectClipRect(DestImage.Canvas.Handle, Rect.Left, Rect.Top,
Rect.Right - Rect.Left + 1,
Rect.Bottom - Rect.Top + 1);
XCnt := DestImage.ClientWidth div SourceImage.Width;
YCnt := DestImage.ClientHeight div SourceImage.Height;
for X := 0 to XCnt do
for Y := 0 to YCnt do
DestImage.Canvas.Draw(Rect.Left + X * SourceImage.Width,
Rect.Top + Y * SourceImage.Height, SourceImage.Picture.Graphic);
finally
RestoreDC(DestImage.Canvas.Handle, SaveIndex);
end;
end;
end;