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|
unit SBitmap;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, LCLProc, LResources, Forms, Controls, Graphics, Dialogs, FileCtrl, StdCtrls, ExtCtrls, ComCtrls,
IntfGraphics, GraphType, FPImage, LCLType;
type
TSColor =
packed record
B: Byte;
G: Byte;
R: Byte;
A: Byte;
end;
type
TSBitmap = class
private
{ private declarations }
// vars
FWidth: Integer;
FHeight: Integer;
RID: TRawImageDescription;
// img
FBitmap: TBitmap;
FBitmapCore: TLazIntfImage;
FBitmapTemp: TLazIntfImage;
PLine: Pointer;
PLinePByte: PByte;
FLine: Integer;
FColor: TSColor;
public
{ public declarations }
// object
constructor Create;
destructor Destroy; override;
// load / get bitmap
procedure LoadBitmap(aBitmap: TBitmap);
function Bitmap:TBitmap;
// Color
procedure Fill(Color: TSColor);
end;
implementation
{ private declarations }
{ public declarations }
/////////////////////////////////////////////////////
// object
/////////////////////////////////////////////////////
constructor TSBitmap.Create;
begin
FWidth := 10;
FHeight := 10;
FBitmap := TBitmap.Create;
FBitmapCore := TLazIntfImage.Create(FWidth,FHeight);
RID.Init_BPP24_B8G8R8_BIO_TTB(FWidth,FHeight);
FBitmapCore.DataDescription := RID;
FLine := 0;
PLine := FBitmapCore.GetDataLineStart(FLine);
PLinePByte := PByte(PLine);
end;
destructor TSBitmap.Destroy;
begin
FBitmapCore.Free;
FBitmap.Free;
inherited;
end;
/////////////////////////////////////////////////////
// load / get bitmap
/////////////////////////////////////////////////////
procedure TSBitmap.LoadBitmap(aBitmap: TBitmap);
begin
FBitmapTemp := TLazIntfImage.Create(0,0);
FBitmapTemp.LoadFromBitmap(aBitmap.Handle,aBitmap.MaskHandle);
FWidth := FBitmapTemp.Width;
FHeight := FBitmapTemp.Height;
FBitmapCore.Width := FWidth;
FBitmapCore.Height := Fheight;
RID.Init_BPP24_B8G8R8_BIO_TTB(FWidth,FHeight);
FBitmapCore.DataDescription := RID;
FBitmapCore.CopyPixels(FBitmapTemp);
FLine := 0;
PLine := FBitmapCore.GetDataLineStart(FLine);
PLinePByte := PByte(PLine);
FBitmapTemp.Free;
end;
function TSBitmap.Bitmap:TBitmap;
begin
FBitmap.Width := FBitmapCore.Width;
FBitmap.Height := FBitmapCore.Height;
FBitmapTemp := FBitmap.CreateIntfImage;
FBitmapTemp.CopyPixels(FBitmapCore);
FBitmap.LoadFromIntfImage(FBitmapTemp);
// result
Result := FBitmap;
// free
FBitmapTemp.Free;
end;
/////////////////////////////////////////////////////
// color
/////////////////////////////////////////////////////
procedure TSBitmap.Fill(Color: TSColor);
var
X,Y,R,G,B,A,AI: Integer;
begin
// alpha
A := Color.A;
AI := 255 - A;
//
for Y := 0 to FHeight-1 do
begin
FLine := Y;
PLine := FBitmapCore.GetDataLineStart(Y);
PLinePByte := PByte(PLine);
for X := 0 to FWidth-1 do
begin
// blend
B := Round(((Color.B*A)+(PLinePByte[X * 3]*AI))/255);
G := Round(((Color.G*A)+(PLinePByte[X * 3 + 1]*AI))/255);
R := Round(((Color.R*A)+(PLinePByte[X * 3 + 2]*AI))/255);
// secure color
if B < 0 then B := 0;
if B > 255 then B := 255;
if G < 0 then G := 0;
if G > 255 then G := 255;
if R < 0 then R := 0;
if R > 255 then R := 255;
// set new
PLinePByte[X * 3] := B;
PLinePByte[X * 3 + 1] := G;
PLinePByte[X * 3 + 2] := R;
end;
end;
end;
initialization
end. |
