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mbControls: Refactoring of the 2D gradients and code used in several units over again.
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@5461 8e941d3f-bd1b-0410-a28a-d453659cc2b4
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wp_xxyyzz
@@ -7,57 +7,45 @@ unit CIEAColorPicker;
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interface
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uses
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{$IFDEF FPC}
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LCLIntf, LCLType, LMessages,
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{$ELSE}
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Windows, Messages,
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{$ENDIF}
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SysUtils, Classes, Controls, Graphics, Math, Forms,
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HTMLColors, SelPropUtils, mbColorPickerControl, RGBCIEUtils, Scanlines;
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{$IFDEF FPC}
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LCLIntf, LCLType, LMessages,
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{$ELSE}
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Windows, Messages,
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{$ENDIF}
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SysUtils, Classes, Controls, Graphics, Math, Forms,
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HTMLColors, RGBCIEUtils, mbColorPickerControl;
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type
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TCIEAColorPicker = class(TmbColorPickerControl)
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private
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FSelected: TColor;
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FBmp: TBitmap;
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FOnChange: TNotifyEvent;
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FL, FA, FB: integer;
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FManual: boolean;
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dx, dy, mxx, myy: integer;
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procedure SetLValue(l: integer);
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procedure SetAValue(a: integer);
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procedure SetBValue(b: integer);
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protected
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function GetSelectedColor: TColor; override;
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procedure WebSafeChanged; override;
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procedure SetSelectedColor(c: TColor); override;
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procedure CNKeyDown(var Message: {$IFDEF FPC}TLMKeyDown{$ELSE}TWMKeyDown{$ENDIF});
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message CN_KEYDOWN;
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procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
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procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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procedure DrawMarker(x, y: integer);
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procedure Paint; override;
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procedure CreateLABGradient;
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procedure Resize; override;
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procedure CreateWnd; override;
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procedure CorrectCoords(var x, y: integer);
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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function GetColorAtPoint(x, y: integer): TColor; override;
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property Manual: boolean read FManual;
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published
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property SelectedColor default clFuchsia;
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property LValue: integer read FL write SetLValue default 100;
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property AValue: integer read FA write SetAValue default 127;
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property BValue: integer read FB write SetBValue default -128;
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property MarkerStyle default msCircle;
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property OnChange: TNotifyEvent read FOnChange write FOnChange;
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end;
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TCIEAColorPicker = class(TmbColorPickerControl)
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private
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FL, FA, FB: integer;
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dx, dy, mxx, myy: integer;
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procedure SetLValue(l: integer);
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procedure SetAValue(a: integer);
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procedure SetBValue(b: integer);
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protected
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function GetGradientColor2D(x, y: Integer): TColor; override;
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procedure SetSelectedColor(c: TColor); override;
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procedure CNKeyDown(var Message: {$IFDEF FPC}TLMKeyDown{$ELSE}TWMKeyDown{$ENDIF});
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message CN_KEYDOWN;
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procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
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procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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procedure DrawMarker(x, y: integer);
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procedure Paint; override;
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procedure Resize; override;
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procedure CreateWnd; override;
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procedure CorrectCoords(var x, y: integer);
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public
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constructor Create(AOwner: TComponent); override;
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published
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property SelectedColor default clFuchsia;
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property LValue: integer read FL write SetLValue default 100;
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property AValue: integer read FA write SetAValue default 127;
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property BValue: integer read FB write SetBValue default -128;
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property MarkerStyle default msCircle;
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property OnChange;
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end;
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procedure Register;
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@@ -67,189 +55,165 @@ implementation
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{$R CIEAColorPicker.dcr}
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{$ENDIF}
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uses
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mbUtils;
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procedure Register;
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begin
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RegisterComponents('mbColor Lib', [TCIEAColorPicker]);
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RegisterComponents('mbColor Lib', [TCIEAColorPicker]);
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end;
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{TCIEAColorPicker}
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constructor TCIEAColorPicker.Create(AOwner: TComponent);
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begin
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inherited;
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FBmp := TBitmap.Create;
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FBmp.PixelFormat := pf32bit;
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FBmp.SetSize(256, 256);
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Width := 256;
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Height := 256;
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HintFormat := 'L: %cieL B: %cieB'#13'Hex: %hex';
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FSelected := clFuchsia;
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FL := 100;
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FA := 127;
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FB := -128;
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FManual := false;
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dx := 0;
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dy := 0;
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mxx := 0;
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myy := 0;
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MarkerStyle := msCircle;
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end;
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destructor TCIEAColorPicker.Destroy;
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begin
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FBmp.Free;
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inherited Destroy;
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inherited;
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{
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FBmp := TBitmap.Create;
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FBmp.PixelFormat := pf32bit;
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FBmp.SetSize(256, 256);
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}
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FGradientWidth := 256;
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FGradientHeight := 256;
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{$IFDEF DELPHI}
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Width := 256;
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Height := 256;
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{$ELSE}
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SetInitialBounds(0, 0, 256, 256);
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{$ENDIF}
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HintFormat := 'L: %cieL B: %cieB'#13'Hex: %hex';
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FSelected := clFuchsia;
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FL := 100;
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FA := 127;
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FB := -128;
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FManual := false;
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dx := 0;
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dy := 0;
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mxx := 0;
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myy := 0;
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MarkerStyle := msCircle;
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end;
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procedure TCIEAColorPicker.CreateWnd;
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begin
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inherited;
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CreateLABGradient;
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CreateGradient;
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end;
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procedure TCIEAColorPicker.CreateLABGradient;
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var
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l, b: integer;
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row: pRGBQuadArray;
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// In the original code: for L ... for B ... LabToRGB(Round(100-L*100/255), FA, B-128);
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// --> x is B, y is L
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function TCIEAColorPicker.GetGradientColor2D(x, y: Integer): TColor;
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begin
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if FBmp = nil then
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begin
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FBmp := TBitmap.Create;
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FBmp.PixelFormat := pf32bit;
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FBmp.Width := 256;
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FBmp.Height := 256;
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end;
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for l := 255 downto 0 do
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begin
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row := FBmp.Scanline[l];
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for b := 0 to 255 do
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if not WebSafe then
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row[b] := RGBtoRGBQuad(LabToRGB(Round(100 - l*100/255), FA, b - 128))
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else
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row[b] := RGBtoRGBQuad(GetWebSafe(LabToRGB(Round(100 - l*100/255), FA, b - 128)));
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end;
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Result := LabToRGB(Round(100 - y*100/255), FA, x - 128);
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end;
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procedure TCIEAColorPicker.CorrectCoords(var x, y: integer);
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begin
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if x < 0 then x := 0;
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if y < 0 then y := 0;
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if x > Width - 1 then x := Width - 1;
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if y > Height - 1 then y := Height - 1;
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Clamp(x, 0, Width - 1);
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Clamp(y, 0, Height - 1);
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end;
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procedure TCIEAColorPicker.DrawMarker(x, y: integer);
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var
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c: TColor;
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c: TColor;
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begin
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CorrectCoords(x, y);
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FL := Round(GetCIELValue(FSelected));
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FA := Round(GetCIEAValue(FSelected));
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FB := Round(GetCIEBValue(FSelected));
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if Assigned(FOnChange) then
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FOnChange(Self);
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dx := x;
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dy := y;
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if Focused or (csDesigning in ComponentState) then
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c := clBlack
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else
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c := clWhite;
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case MarkerStyle of
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msCircle: DrawSelCirc(x, y, Canvas);
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msSquare: DrawSelSquare(x, y, Canvas);
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msCross: DrawSelCross(x, y, Canvas, c);
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msCrossCirc: DrawSelCrossCirc(x, y, Canvas, c);
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end;
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end;
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function TCIEAColorPicker.GetSelectedColor: TColor;
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begin
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Result := FSelected;
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CorrectCoords(x, y);
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FL := Round(GetCIELValue(FSelected));
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FA := Round(GetCIEAValue(FSelected));
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FB := Round(GetCIEBValue(FSelected));
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if Assigned(FOnChange) then
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FOnChange(Self);
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dx := x;
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dy := y;
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if Focused or (csDesigning in ComponentState) then
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c := clBlack
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else
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c := clWhite;
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InternalDrawMarker(x, y, c);
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end;
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procedure TCIEAColorPicker.SetSelectedColor(c: TColor);
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begin
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if WebSafe then c := GetWebSafe(c);
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FL := Round(GetCIELValue(c));
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FA := Round(GetCIEAValue(c));
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FB := Round(GetCIEBValue(c));
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FSelected := c;
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FManual := false;
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mxx := Round((FB+128)*(Width/255));
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myy := Round(((100-FL)*255/100)*(Height/255));
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CreateLABGradient;
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Invalidate;
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if WebSafe then c := GetWebSafe(c);
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FL := Round(GetCIELValue(c));
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FA := Round(GetCIEAValue(c));
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FB := Round(GetCIEBValue(c));
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FSelected := c;
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FManual := false;
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mxx := Round((FB+128)*(Width/255));
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myy := Round(((100-FL)*255/100)*(Height/255));
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CreateGradient;
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Invalidate;
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end;
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procedure TCIEAColorPicker.Paint;
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begin
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Canvas.StretchDraw(ClientRect, FBmp);
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CorrectCoords(mxx, myy);
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DrawMarker(mxx, myy);
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Canvas.StretchDraw(ClientRect, FGradientBmp);
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CorrectCoords(mxx, myy);
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DrawMarker(mxx, myy);
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end;
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procedure TCIEAColorPicker.Resize;
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begin
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FManual := false;
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mxx := Round((FB+128)*(Width/255));
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myy := Round(((100-FL)*255/100)*(Height/255));
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inherited;
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FManual := false;
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mxx := Round((FB+128)*(Width/255));
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myy := Round(((100-FL)*255/100)*(Height/255));
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inherited;
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end;
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procedure TCIEAColorPicker.MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
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var
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R: TRect;
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R: TRect;
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begin
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inherited;
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mxx := x;
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myy := y;
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if Button = mbLeft then
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inherited;
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mxx := x;
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myy := y;
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if Button = mbLeft then
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begin
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R := ClientRect;
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R.TopLeft := ClientToScreen(R.TopLeft);
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R.BottomRight := ClientToScreen(R.BottomRight);
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{$IFDEF DELPHI}
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ClipCursor(@R);
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{$ENDIF}
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FSelected := GetColorAtPoint(x, y);
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FManual := true;
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Invalidate;
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R := ClientRect;
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R.TopLeft := ClientToScreen(R.TopLeft);
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R.BottomRight := ClientToScreen(R.BottomRight);
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{$IFDEF DELPHI}
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ClipCursor(@R);
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{$ENDIF}
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FSelected := GetColorAtPoint(x, y);
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FManual := true;
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Invalidate;
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end;
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SetFocus;
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SetFocus;
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end;
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procedure TCIEAColorPicker.MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
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begin
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inherited;
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{$IFDEF DELPHI}
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ClipCursor(nil);
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{$ENDIF}
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mxx := x;
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myy := y;
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FSelected := GetColorAtPoint(x, y);
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FManual := true;
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Invalidate;
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inherited;
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{$IFDEF DELPHI}
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ClipCursor(nil);
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{$ENDIF}
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mxx := x;
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myy := y;
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FSelected := GetColorAtPoint(x, y);
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FManual := true;
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Invalidate;
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end;
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procedure TCIEAColorPicker.MouseMove(Shift: TShiftState; X, Y: Integer);
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begin
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inherited;
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if ssLeft in Shift then
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inherited;
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if ssLeft in Shift then
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begin
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mxx := x;
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myy := y;
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FSelected := GetColorAtPoint(x, y);
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FManual := true;
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Invalidate;
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mxx := x;
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myy := y;
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FSelected := GetColorAtPoint(x, y);
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FManual := true;
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Invalidate;
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end;
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end;
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procedure TCIEAColorPicker.CNKeyDown(
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var Message: {$IFDEF FPC}TLMKeyDown{$ELSE}TWMKeyDown{$ENDIF} );
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var
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Shift: TShiftState;
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FInherited: boolean;
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Shift: TShiftState;
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FInherited: boolean;
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begin
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FInherited := false;
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Shift := KeyDataToShiftState(Message.KeyData);
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@@ -344,38 +308,23 @@ end;
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procedure TCIEAColorPicker.SetLValue(l: integer);
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begin
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if l > 100 then l := 100;
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if l < 0 then l := 0;
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FL := l;
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SetSelectedColor(LabToRGB(FL, FA, FB));
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Clamp(L, 0, 100);
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FL := L;
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SetSelectedColor(LabToRGB(FL, FA, FB));
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end;
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procedure TCIEAColorPicker.SetAValue(a: integer);
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begin
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if a > 127 then a := 127;
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if a < -128 then a := -128;
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FA := a;
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SetSelectedColor(LabToRGB(FL, FA, FB));
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Clamp(a, -128, 127);
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FA := a;
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SetSelectedColor(LabToRGB(FL, FA, FB));
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end;
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procedure TCIEAColorPicker.SetBValue(b: integer);
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begin
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if b > 127 then b := 127;
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if b < -128 then b := -128;
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FB := b;
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SetSelectedColor(LabToRGB(FL, FA, FB));
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end;
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function TCIEAColorPicker.GetColorAtPoint(x, y: integer): TColor;
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begin
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Result := Canvas.Pixels[x, y];
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end;
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procedure TCIEAColorPicker.WebSafeChanged;
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begin
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inherited;
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CreateLABGradient;
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Invalidate;
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Clamp(b, -128, 127);
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FB := b;
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SetSelectedColor(LabToRGB(FL, FA, FB));
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end;
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end.
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Block a user