git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1528 8e941d3f-bd1b-0410-a28a-d453659cc2b4

This commit is contained in:
yangjixian
2011-03-12 17:48:37 +00:00
parent 393dd345b9
commit 892d2235c3
3 changed files with 1427 additions and 1012 deletions

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@@ -37,18 +37,15 @@
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@@ -0,0 +1,405 @@
unit rgbdrawutils;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, LCLType, LCLIntf, LMessages, LCLProc, Controls, Graphics,
Forms, Types, IntfGraphics, FPImage, Math, FPImgCanv, FPCanvas;
type
PRGBTripleArray = ^TRGBTripleArray;
TRGBTripleArray = array[0..32767] of TRGBTriple;
TCustomRGBBitmapCore = class(TBitmap)
private
FIntfImg: TLazIntfImage;
FFillColor: TColor;
FOutlineColor: TColor;
FPaperColor: TColor;
function GetScanline(Row: integer): Pointer;
function GetFillColor: TColor;
function GetOutlineColor: TColor;
function GetPaperColor: TColor;
procedure SetFillColor(const AValue: TColor);
procedure SetOutlineColor(const AValue: TColor);
procedure SetPaperColor(const AValue: TColor);
protected
procedure SetWidth(Value: integer); override;
procedure SetHeight(Value: integer); override;
public
constructor Create; override;
destructor Destroy; override;
procedure ApplyScanLine;
procedure Clear; virtual;
procedure ClearWhite; virtual;
procedure Invert; virtual;
procedure FlipHorz; virtual;
procedure FlipVert; virtual;
procedure Rotate90; virtual;
procedure Rotate180; virtual;
procedure Rotate270; virtual;
procedure FillEllipse(X1, Y1, X2, Y2: integer); virtual;
property FillColor: TColor read GetFillColor write SetFillColor;
property OutlineColor: TColor read GetOutlineColor write SetOutlineColor;
property PaperColor: TColor read GetPaperColor write SetPaperColor;
property ScanLine[Row: integer]: Pointer read GetScanLine;
end;
implementation
procedure BMPRotate90(const Bitmap: TCustomRGBBitmapCore);
var
i, j: integer;
rowIn, rowOut: PRGBTripleArray;
Bmp: TCustomRGBBitmapCore;
Width, Height: integer;
begin
Bmp := TCustomRGBBitmapCore.Create;
Bmp.Width := Bitmap.Height;
Bmp.Height := Bitmap.Width;
Bmp.PixelFormat := pf24bit;
Width := Bitmap.Width - 1;
Height := Bitmap.Height - 1;
for j := 0 to Height do
begin
rowIn := Bitmap.ScanLine[j];
for i := 0 to Width do
begin
rowOut := Bmp.ScanLine[i];
// Inc(rowOut, Height - j);
rowOut^[i * (Height - j)] := rowIn^[i];
// Inc(rowIn);
end;
end;
Bmp.ApplyScanLine;
Bitmap.Assign(Bmp);
end;
procedure BMPRotate180(const Bitmap: TCustomRGBBitmapCore);
var
i, j: integer;
rowIn, rowOut: pRGBTriple;
Bmp: TCustomRGBBitmapCore;
Width, Height: integer;
begin
Bmp := TCustomRGBBitmapCore.Create;
Bmp.Width := Bitmap.Width;
Bmp.Height := Bitmap.Height;
Bmp.PixelFormat := pf24bit;
Width := Bitmap.Width - 1;
Height := Bitmap.Height - 1;
for j := 0 to Height do
begin
rowIn := Bitmap.ScanLine[j];
for i := 0 to Width do
begin
rowOut := Bmp.ScanLine[Height - j];
Inc(rowOut, Width - i);
rowOut^ := rowIn^;
Inc(rowIn);
end;
end;
Bmp.ApplyScanLine;
Bitmap.Assign(Bmp);
end;
procedure BMPRotate270(const Bitmap: TCustomRGBBitmapCore);
var
i, j: integer;
rowIn, rowOut: pRGBTriple;
Bmp: TCustomRGBBitmapCore;
Width, Height: integer;
begin
Bmp := TCustomRGBBitmapCore.Create;
Bmp.Width := Bitmap.Height;
Bmp.Height := Bitmap.Width;
Bmp.PixelFormat := pf24bit;
Width := Bitmap.Width - 1;
Height := Bitmap.Height - 1;
for j := 0 to Height do
begin
rowIn := Bitmap.ScanLine[j];
for i := 0 to Width do
begin
rowOut := Bmp.ScanLine[Width - i];
Inc(rowOut, j);
rowOut^ := rowIn^;
Inc(rowIn);
end;
end;
Bmp.ApplyScanLine;
Bitmap.Assign(Bmp);
end;
function RotateBitmap(Bitmap: TCustomRGBBitmapCore; Angle: integer;
BackColor: TColor): TCustomRGBBitmapCore;
var
i, j, iOriginal, jOriginal, CosPoint, SinPoint: integer;
RowOriginal, RowRotated: pRGBTriple;
SinTheta, CosTheta: extended;
AngleAdd: integer;
begin
Result := TCustomRGBBitmapCore.Create;
Result.PixelFormat := pf24bit;
Result.Canvas.Brush.Color := BackColor;
Angle := Angle mod 360;
if Angle < 0 then
Angle := 360 - Abs(Angle);
if Angle = 0 then
Result.Assign(Bitmap)
else if Angle = 90 then
begin
Result.Assign(Bitmap);
BMPRotate90(Result);
end
else if (Angle > 90) and (Angle < 180) then
begin
AngleAdd := 90;
Angle := Angle - AngleAdd;
end
else if Angle = 180 then
begin
Result.Assign(Bitmap);
BMPRotate180(Result);
end
else if (Angle > 180) and (Angle < 270) then
begin
AngleAdd := 180;
Angle := Angle - AngleAdd;
end
else if Angle = 270 then
begin
Result.Assign(Bitmap);
BMPRotate270(Result);
end
else if (Angle > 270) and (Angle < 360) then
begin
AngleAdd := 270;
Angle := Angle - AngleAdd;
end
else
AngleAdd := 0;
if (Angle > 0) and (Angle < 90) then
begin
SinCos((Angle + AngleAdd) * Pi / 180, SinTheta, CosTheta);
if (SinTheta * CosTheta) < 0 then
begin
Result.Width := Round(Abs(Bitmap.Width * CosTheta - Bitmap.Height * SinTheta));
Result.Height := Round(Abs(Bitmap.Width * SinTheta - Bitmap.Height * CosTheta));
end
else
begin
Result.Width := Round(Abs(Bitmap.Width * CosTheta + Bitmap.Height * SinTheta));
Result.Height := Round(Abs(Bitmap.Width * SinTheta + Bitmap.Height * CosTheta));
end;
CosTheta := Abs(CosTheta);
SinTheta := Abs(SinTheta);
if (AngleAdd = 0) or (AngleAdd = 180) then
begin
CosPoint := Round(Bitmap.Height * CosTheta);
SinPoint := Round(Bitmap.Height * SinTheta);
end
else
begin
SinPoint := Round(Bitmap.Width * CosTheta);
CosPoint := Round(Bitmap.Width * SinTheta);
end;
for j := 0 to Result.Height - 1 do
begin
RowRotated := Result.Scanline[j];
for i := 0 to Result.Width - 1 do
begin
case AngleAdd of
0:
begin
jOriginal := Round((j + 1) * CosTheta - (i + 1 - SinPoint) * SinTheta) - 1;
iOriginal := Round((i + 1) * CosTheta - (CosPoint - j - 1) * SinTheta) - 1;
end;
90:
begin
iOriginal := Round((j + 1) * SinTheta - (i + 1 - SinPoint) * CosTheta) - 1;
jOriginal := Bitmap.Height - Round((i + 1) * SinTheta -
(CosPoint - j - 1) * CosTheta);
end;
180:
begin
jOriginal := Bitmap.Height - Round((j + 1) * CosTheta -
(i + 1 - SinPoint) * SinTheta);
iOriginal := Bitmap.Width - Round((i + 1) * CosTheta -
(CosPoint - j - 1) * SinTheta);
end;
270:
begin
iOriginal := Bitmap.Width - Round((j + 1) * SinTheta -
(i + 1 - SinPoint) * CosTheta);
jOriginal := Round((i + 1) * SinTheta - (CosPoint - j - 1) * CosTheta) - 1;
end;
end;
if (iOriginal >= 0) and (iOriginal <= Bitmap.Width - 1) and
(jOriginal >= 0) and (jOriginal <= Bitmap.Height - 1) then
begin
RowOriginal := Bitmap.Scanline[jOriginal];
Inc(RowOriginal, iOriginal);
RowRotated^ := RowOriginal^;
Inc(RowRotated);
end
else
begin
Inc(RowRotated);
end;
end;
end;
end;
Result.ApplyScanLine;
end;
procedure DrawSamePixel(ABitmap: TCustomRGBBitmapCore; Value: integer);
var
LNew: TRGBTriple;
LMinusRatio: real;
LScan: PRGBTripleArray;
i, j: integer;
begin
for i := 0 to ABitmap.Height - 1 do
begin
LScan := ABitmap.Scanline[i];
for j := 0 to ABitmap.Width - 1 do
begin
LNew.rgbtBlue := Value; //LNew.rgbtBlue - Value;
LNew.rgbtGreen := Value; //LNew.rgbtGreen - Value;
LNew.rgbtRed := Value; //LNew.rgbtRed - Value;
LScan^[j] := LNew;
end;
end;
ABitmap.ApplyScanLine;
end;
constructor TCustomRGBBitmapCore.Create;
begin
inherited;
PixelFormat := pf24bit;
FIntfImg := TLazIntfImage.Create(0, 0);
FIntfImg.LoadFromBitmap(Handle, MaskHandle);
end;
destructor TCustomRGBBitmapCore.Destroy;
begin
FIntfImg.Free;
inherited;
end;
function TCustomRGBBitmapCore.GetScanLine(Row: integer): Pointer;
var
ImgHandle, ImgMaskHandle: HBitmap;
begin
Result := FIntfImg.GetDataLineStart(Row);
end;
procedure TCustomRGBBitmapCore.ApplyScanLine;
var
TmpBmp: TBitmap;
ImgHandle, ImgMaskHandle: HBitmap;
begin
TmpBmp := TBitmap.Create;
TmpBmp.PixelFormat := pf24bit;
FIntfImg.CreateBitmaps(ImgHandle, ImgMaskHandle, False);
TmpBmp.Handle := ImgHandle;
TmpBmp.MaskHandle := ImgMaskHandle;
Empty;
Canvas.Draw(0, 0, TmpBmp);
TmpBmp.Free;
FIntfImg.LoadFromBitmap(Handle, MaskHandle);
end;
function TCustomRGBBitmapCore.GetFillColor: TColor;
begin
Result := FFillColor;
end;
function TCustomRGBBitmapCore.GetOutlineColor: TColor;
begin
Result := FOutlineColor;
end;
function TCustomRGBBitmapCore.GetPaperColor: TColor;
begin
Result := FPaperColor;
end;
procedure TCustomRGBBitmapCore.SetFillColor(const AValue: TColor);
begin
FFillColor := AValue;
end;
procedure TCustomRGBBitmapCore.SetOutlineColor(const AValue: TColor);
begin
FOutlineColor := AValue;
end;
procedure TCustomRGBBitmapCore.SetPaperColor(const AValue: TColor);
begin
FPaperColor := AValue;
end;
procedure TCustomRGBBitmapCore.SetWidth(Value: integer);
begin
inherited;
FIntfImg.LoadFromBitmap(Handle, MaskHandle);
end;
procedure TCustomRGBBitmapCore.SetHeight(Value: integer);
begin
inherited;
FIntfImg.LoadFromBitmap(Handle, MaskHandle);
end;
procedure TCustomRGBBitmapCore.Clear;
begin
end;
procedure TCustomRGBBitmapCore.ClearWhite;
begin
end;
procedure TCustomRGBBitmapCore.Invert;
begin
end;
procedure TCustomRGBBitmapCore.FlipHorz;
begin
end;
procedure TCustomRGBBitmapCore.FlipVert;
begin
end;
procedure TCustomRGBBitmapCore.Rotate90;
begin
//DrawSamePixel(Self, 240);
BMPRotate90(Self);
end;
procedure TCustomRGBBitmapCore.Rotate180;
begin
RotateBitmap(Self, 180, clWhite);
end;
procedure TCustomRGBBitmapCore.Rotate270;
begin
RotateBitmap(Self, 270, clWhite);
end;
procedure TCustomRGBBitmapCore.FillEllipse(X1, Y1, X2, Y2: integer);
begin
end;
end.