{*******************************************************************}
{                                                                   }
{       Almediadev Visual Component Library                         }
{       BusinessSkinForm                                            }
{       Version 2.30                                                }
{                                                                   }
{       Copyright (c) 2000-2003 Almediadev                          }
{       ALL RIGHTS RESERVED                                         }
{                                                                   }
{       Home:  http://www.almdev.com                                }
{       Support: support@almdev.com                                 }
{                                                                   }
{*******************************************************************}

unit bsEffects;

{$P+,S-,W-,R-}
{$WARNINGS OFF}
{$HINTS OFF}

interface


uses Graphics, Windows;

type

  TFColor = record
    b, g, r: Byte;
  end;

  PFColor = ^TFColor;

  TLine = array[0..0] of TFColor;
  PLine = ^TLine;

  TbsEffectBmp = class(TObject)
  private
    procedure SetPixel(x,y: Integer; Clr: Integer);
    function GetPixel(x,y: Integer): Integer;
    procedure SetLine(y: Integer; Line: Pointer);
    function GetLine(y:Integer): Pointer;
  public
    Handle, Width, Height, Size: Integer;
    Bits: Pointer;
    BmpHeader: TBITMAPINFOHEADER;
    BmpInfo: TBITMAPINFO;
    constructor Create(cx, cy: Integer);
    constructor CreateFromhWnd(hBmp: Integer);
    constructor CreateCopy(hBmp: TbsEffectBmp);
    destructor  Destroy; override;
    property Pixels[x,y: Integer]: Integer read GetPixel write SetPixel;
    property ScanLines[y:Integer]: Pointer read GetLine write SetLine;
    procedure GetScanLine(y: Integer; Line:Pointer);
    procedure Resize(Dst: TbsEffectBmp);
    procedure Draw(hDC, x, y: Integer);
    procedure Stretch(hDC, x, y, cx, cy: Integer);
    procedure DrawRect(hDC, hx, hy, x, y, cx, cy: Integer);
    procedure CopyRect(BMP: TbsEffectBmp; Rct:TRect; StartX, StartY: Integer);
    procedure MorphRect(BMP: TbsEffectBmp; Kf: Double; Rct: TRect;
                        StartX, StartY: Integer);
    procedure Morph(BMP: TbsEffectBmp; Kf: Double);
    procedure MorphHGrad(BMP: TbsEffectBMP; Kf: Double);
    procedure MorphVGrad(BMP: TbsEffectBMP; Kf: Double);
    procedure MorphGrad(BMP: TbsEffectBMP; Kf: Double);
    procedure MorphLeftGrad(BMP: TbsEffectBMP; Kf: Double);
    procedure MorphRightGrad(BMP: TbsEffectBMP; Kf: Double);
    procedure MorphLeftSlide(BMP: TbsEffectBMP; Kf: Double);
    procedure MorphRightSlide(BMP: TbsEffectBMP; Kf: Double);
    procedure MorphPush(BMP: TbsEffectBMP; Kf: Double);
    procedure ChangeBrightness(Kf: Double);
    procedure ChangeDarkness(Kf: Double);
    procedure GrayScale;
    procedure SplitBlur(Amount: Integer);
    procedure Mosaic(ASize: Integer);
    procedure Invert;
    procedure AddColorNoise(Amount: Integer);
    procedure AddMonoNoise(Amount: Integer);
    procedure Rotate90_1(Dst: TbsEffectBmp);
    procedure Rotate90_2(Dst: TbsEffectBmp);
  end;

  PEfBmp = ^TbsEffectBmp;

implementation

uses Forms;

procedure CheckRGB(var r, g, b: Integer);
begin
  if r > 255 then r := 255 else if r < 0 then r := 0;
  if g > 255 then g := 255 else if g < 0 then g := 0;
  if b > 255 then b := 255 else if b < 0 then b := 0;
end;

procedure TbsEffectBmp.SetPixel(x, y: Integer; Clr:Integer);
begin
  CopyMemory(
    Pointer(Integer(Bits) + (y * (Width mod 4)) + (((y * Width) + x) * 3)), @Clr, 3);
end;

function TbsEffectBmp.GetPixel(x,y:Integer):Integer;
begin
  CopyMemory(
    @Result,
    Pointer(Integer(Bits) + (y * (Width mod 4)) + (((y * Width) + x) * 3)), 3);
end;

procedure TbsEffectBmp.SetLine(y:Integer;Line:Pointer);
begin
  CopyMemory(
    Pointer(Integer(Bits) + (y*(Width mod 4)) + ((y * Width) * 3)), Line, Width * 3);
end;

function TbsEffectBmp.GetLine(y:Integer):Pointer;
begin
  Result := Pointer(Integer(Bits) + (y * (Width mod 4)) + ((y * Width) * 3));
end;

procedure TbsEffectBmp.GetScanLine(y:Integer;Line:Pointer);
begin
  CopyMemory(
    Line,
    Pointer(Integer(Bits) + (y * (Width mod 4)) + ((y * Width) * 3)), Width * 3);
end;

constructor TbsEffectBmp.Create(cx,cy:Integer);
begin
  Width := cx;
  Height := cy;
  Size := ((Width * 3) + (Width mod 4)) * Height;
  with BmpHeader do
  begin
    biSize := SizeOf(BmpHeader);
    biWidth := Width;
    biHeight := -Height;
    biPlanes := 1;
    biBitCount := 24;
    biCompression := BI_RGB;
  end;
  BmpInfo.bmiHeader := BmpHeader;
  Handle := CreateDIBSection(0, BmpInfo, DIB_RGB_COLORS, Bits, 0, 0);
end;

constructor TbsEffectBmp.CreateFromhWnd(hBmp:Integer);
var
  Bmp: TBITMAP;
  hDC: Integer;
begin
  hDC := CreateDC('DISPLAY', nil, nil, nil);
  SelectObject(hDC, hBmp);
  GetObject(hBmp, SizeOf(Bmp), @Bmp);
  Width := Bmp.bmWidth;
  Height := Bmp.bmHeight;
  Size := ((Width * 3) + (Width mod 4)) * Height;

  with BmpHeader do
  begin
    biSize := SizeOf(BmpHeader);
    biWidth := Width;
    biHeight := -Height;
    biPlanes := 1;
    biBitCount := 24;
    biCompression := BI_RGB;
  end;

  BmpInfo.bmiHeader := BmpHeader;
  Handle := CreateDIBSection(0, BmpInfo, DIB_RGB_COLORS, Bits, 0, 0);
  GetDIBits(hDC, hBmp, 0, Height, Bits, BmpInfo, DIB_RGB_COLORS);
  DeleteDC(hDC);
end;

constructor TbsEffectBmp.CreateCopy(hBmp:TbsEffectBmp);
begin
  BmpHeader := hBmp.BmpHeader;
  BmpInfo := hBmp.BmpInfo;
  Width := hBmp.Width;
  Height := hBmp.Height;
  Size := ((Width * 3) + (Width mod 4)) * Height;
  Handle := CreateDIBSection(0, BmpInfo, DIB_RGB_COLORS, Bits, 0 , 0);
  CopyMemory(Bits, hBmp.Bits, Size);
end;

procedure TbsEffectBmp.Stretch(hDC,x,y,cx,cy:Integer);
begin
  StretchDiBits(hDC,
                x, y, cx, cy,
                0, 0, Width, Height,
                Bits,
                BmpInfo,
                DIB_RGB_COLORS,
                SRCCOPY);
end;

procedure TbsEffectBmp.Draw(hDC,x,y:Integer);
begin
  SetDIBitsToDevice(hDC,
                    x, y, Width, Height,
                    0, 0, 0, Height,
                    Bits,
                    BmpInfo,
                    DIB_RGB_COLORS);
end;

procedure TbsEffectBmp.DrawRect(hDC,hx,hy,x,y,cx,cy:Integer);
begin
  StretchDiBits(hDC,
                hx, hy + cy - 1, cx,-cy + 1,
                x, Height - y, cx, -cy + 1,
                Bits,
                BmpInfo,
                DIB_RGB_COLORS,
                SRCCOPY);
end;

procedure TbsEffectBmp.Resize(Dst:TbsEffectBmp);
var
  xCount, yCount, x,y: Integer;
  xScale, yScale: Double;
begin
  xScale := (Dst.Width-1) / Width;
  yScale := (Dst.Height-1) / Height;

  for y := 0 to Height-1 do
  for x := 0 to Width-1 do
    begin
      for yCount := 0 to Round(yScale) do
      for xCount := 0 to Round(xScale) do
        Dst.Pixels[Round(xScale * x) + xCount, Round(yScale * y) + yCount] := Pixels[x,y];
    end;
end;

procedure TbsEffectBmp.Morph(BMP: TbsEffectBmp; Kf: Double);
var
  x, y, r, g, b: Integer;
  Line, L: PLine;
begin
  if (BMP.Width <> Width) or (BMP.Height <> Height) then Exit;
  if kf < 0 then kf := 0;
  if kf > 1 then kf := 1;
  GetMem(Line, Width * 3);
  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    for x := 0 to Width - 1 do
    begin
      r := Round(Line^[x].r * (1 - kf) + L^[x].r * kf);
      g := Round(Line^[x].g * (1 - kf) + L^[x].g * kf);
      b := Round(Line^[x].b * (1 - kf) + L^[x].b * kf);
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
    end;
    ScanLines[y] := Line;
  end;

  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.MorphRect(BMP: TbsEffectBmp; Kf: Double;
                                 Rct: TRect;
                                 StartX, StartY: Integer);
var
  x,y, x1,y1, r, g, b : Integer;
  Line, L: PLine;
begin
  if kf < 0 then kf := 0;
  if kf > 1 then kf := 1;
  GetMem(Line,Width*3);
  y1 := StartY;
  for y := Rct.Top to Rct.Bottom - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y1];
    x1 := StartX;
    for x := Rct.Left to Rct.Right - 1 do
    begin
      r := Round(Line^[x].r * (1 - kf) + L^[x1].r * kf);
      g := Round(Line^[x].g * (1 - kf) + L^[x1].g * kf);
      b := Round(Line^[x].b * (1 - kf) + L^[x1].b * kf);
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
      Inc(x1);
    end;
    ScanLines[y] := Line;
    Inc(y1);
  end;
  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.CopyRect(BMP: TbsEffectBmp; Rct: TRect;
                                StartX, StartY:Integer);
var
  x,y,x1,y1: Integer;
  Line, L: PLine;
begin
  GetMem(Line,Width*3);
  y1 := StartY;
  if Rct.Right > Width - 1 then Rct.Right := Width - 1;
  if Rct.Bottom > Height - 1 then Rct.Bottom := Height - 1;
  for y := Rct.Top to Rct.Bottom do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y1];
    x1 := StartX;
    for x := Rct.Left to Rct.Right do
    begin
      Line^[x] := L^[x1];
      Inc(x1);
    end;
    ScanLines[y] := Line;
    Inc(y1);
  end;
  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.MorphHGrad;
var
  x, y, r, g, b: Integer;
  Line, L: PLine;
  kf1: Double;
  step: Double;
  f : Double;
  p1, p2: Integer;
  Offset: Integer;
begin
  if (BMP.Width <> Width) or (BMP.Height <> Height) then Exit;
  GetMem(Line,Width * 3);

  Offset := Round(Width * kf);

  f := (Width - Offset) div 2;

  if f <> 0
  then
    Step := 1 / f
  else
    Step := 1;

  p1 := Width div 2 - Offset div 2;
  if p1 < 0 then p1 := 0;
  p2 := Width div 2 + Offset div 2;
  if p2 > Width - 1 then p2 := Width - 1;

  for y := 0 to Height - 1 do
  begin
    GetScanLine(y, Line);
    L := BMP.ScanLines[y];
    for x := p1 to p2 do
    begin
      Line^[x].r := L^[x].r;
      Line^[x].g := L^[x].g;
      Line^[x].b := L^[x].b;
     end;
     ScanLines[y] := Line;
   end;

  for y := 0 to Height - 1 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    kf1 := 0;
    for x := p1 downto 0 do
    begin
      r := Round(Line^[x].r * kf1 + L^[x].r * (1 - kf1));
      g := Round(Line^[x].g * kf1 + L^[x].g * (1 - kf1));
      b := Round(Line^[x].b * kf1 + L^[x].b * (1 - kf1));
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
      kf1 := kf1 + Step;
      if kf1 > 1 then kf1 := 1;
     end;
     ScanLines[y] := Line;
   end;

   for y := 0 to Height - 1 do
   begin
     GetScanLine(y,Line);
     L := BMP.ScanLines[y];
     kf1 := 0;
     for x := p2 to Width - 1 do
     begin
       r := Round(Line^[x].r * kf1 + L^[x].r * (1 - kf1));
       g := Round(Line^[x].g * kf1 + L^[x].g * (1 - kf1));
       b := Round(Line^[x].b * kf1 + L^[x].b * (1 - kf1));
       CheckRGB(r, g, b);
       Line^[x].r := r;
       Line^[x].g := g;
       Line^[x].b := b;
       kf1 := kf1 + Step;
       if kf1 > 1 then kf1 := 1;
     end;
     ScanLines[y] := Line;
   end;

  FreeMem(Line, Width * 3);
end;

procedure TbsEffectBmp.MorphVGrad;
var
  x, y, r, g, b: Integer;
  Line, L: PLine;
  kf1: Double;
  step: Double;
  f : Double;
  p1, p2: Integer;
  Offset: Integer;
begin
  if (BMP.Width <> Width) or (BMP.Height <> Height) then Exit;
  GetMem(Line, Width * 3);

  Offset := Round(Height * kf);

  f := (Height - 1 - Offset) div 2;

  if f <> 0
  then
    Step := 1 / f
  else
    Step := 0;

  p1 := Height div 2 - Offset div 2;
  if p1 < 0 then p1 := 0;
  p2 := Height div 2 + Offset div 2;
  if p2 > Height - 1 then p2 := Height - 1;

  for y := p1 to p2 do
  begin
    GetScanLine(y, Line);
    L := BMP.ScanLines[y];
    for x := 0 to Width - 1 do
    begin
      Line^[x].r := L^[x].r;
      Line^[x].g := L^[x].g;
      Line^[x].b := L^[x].b;
     end;
     ScanLines[y] := Line;
   end;

  kf1 := 0;
  for y := p1 downto 0 do
  begin
    GetScanLine(y,Line);
    L := BMP.ScanLines[y];
    for x := 0 to Width - 1 do
    begin
      r := Round(Line^[x].r * kf1 + L^[x].r * (1 - kf1));
      g := Round(Line^[x].g * kf1 + L^[x].g * (1 - kf1));
      b := Round(Line^[x].b * kf1 + L^[x].b * (1 - kf1));
      CheckRGB(r, g, b);
      Line^[x].r := r;
      Line^[x].g := g;
      Line^[x].b := b;
     end;
     ScanLines[y] := Line;
     kf1 := kf1 + Step;
     if kf1 > 1 then kf1 := 1;
   end;

   kf1 := 0;
   for y := p2 to Height - 1 do
   begin
     GetScanLine(y,Line);
     L := BMP.ScanLines[y];
     for x := 0 to Width - 1 do
     begin