mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-05-25 22:02:37 +02:00
444 lines
16 KiB
ObjectPascal
444 lines
16 KiB
ObjectPascal
unit customdrawn_android;
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{$mode objfpc}{$H+}
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interface
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uses
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// RTL
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Classes, SysUtils, Types, Math,
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// fpimage
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fpcanvas, fpimgcanv, fpimage,
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// LCL -> Use only TForm, TWinControl, TCanvas and TLazIntfImage
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Graphics, Controls, LCLType, LCLIntf, IntfGraphics, LResources,
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//
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customdrawndrawers, customdrawn_common;
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type
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{ TCDDrawerAndroid }
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TCDDrawerAndroid = class(TCDDrawerCommon)
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private
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bmpCheckbox, bmpCheckboxChecked: TBitmap;
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// Draws a line alternating between two colors
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procedure DrawAndroidAlternatedHorzLine(ADest: TCanvas; X1, X2,
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Y: Integer; AColor1, AColor2: TColor);
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// Draws 2 mixed gradients which alternate between one another on each pixel
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procedure DrawAndroidMixedVertGradientFill(ADest: TCanvas; ARect: TRect;
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AStart1, AStop1, AStart2, AStop2: TColor);
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// Fills a rectangular area alternating between two pixels
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procedure DrawAndroidMixedFill(ADest: TCanvas; ARect: TRect; AColor1, AColor2: TColor);
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public
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procedure CreateResources; override;
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procedure LoadResources; override;
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procedure FreeResources; override;
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//procedure LoadFallbackPaletteColors; override;
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function GetDrawStyle: TCDDrawStyle; override;
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// General
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function GetMeasures(AMeasureID: Integer): Integer; override;
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{ function GetMeasuresEx(ADest: TCanvas; AMeasureID: Integer;
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AState: TCDControlState; AStateEx: TCDControlStateEx): Integer; virtual; abstract;
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procedure CalculatePreferredSize(ADest: TCanvas; AControlId: TCDControlID;
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AState: TCDControlState; AStateEx: TCDControlStateEx;
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var PreferredWidth, PreferredHeight: integer; WithThemeSpace: Boolean); virtual; abstract;
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function GetColor(AColorID: Integer): TColor; virtual; abstract;
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function GetClientArea(ADest: TCanvas; ASize: TSize; AControlId: TCDControlID;
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AState: TCDControlState; AStateEx: TCDControlStateEx): TRect; virtual; abstract;}
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// General drawing routines
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{procedure DrawFocusRect(ADest: TCanvas; ADestPos: TPoint; ASize: TSize); override;
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procedure DrawRaisedFrame(ADest: TCanvas; ADestPos: TPoint; ASize: TSize); override;
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procedure DrawSunkenFrame(ADest: TCanvas; ADestPos: TPoint; ASize: TSize); override;
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procedure DrawShallowSunkenFrame(ADest: TCanvas; ADestPos: TPoint; ASize: TSize); override;}
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procedure DrawTickmark(ADest: TCanvas; ADestPos: TPoint); override;
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{procedure DrawSlider(ADest: TCanvas; ADestPos: TPoint; ASize: TSize; AState: TCDControlState); override;
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procedure DrawCompactArrow(ADest: TCanvas; ADestPos: TPoint; ADirection: TCDControlState); override;}
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// ===================================
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// Standard Tab
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// ===================================
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// TCDButton
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procedure DrawButton(ADest: TCanvas; ASize: TSize;
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AState: TCDControlState; AStateEx: TCDButtonStateEx); override;
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{ // TCDEdit
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procedure DrawEditBackground(ADest: TCanvas; ADestPos: TPoint; ASize: TSize;
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AState: TCDControlState; AStateEx: TCDEditStateEx); override;}
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// TCDCheckBox
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procedure DrawCheckBoxSquare(ADest: TCanvas; ADestPos: TPoint; ASize: TSize;
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AState: TCDControlState; AStateEx: TCDControlStateEx); override;
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end;
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implementation
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const
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ANDROID_DPI = 'vldpi';
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// Actually Android buttons are much more complex then this,
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// but this approximation works well
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ANDROID_BUTTON_CORNERS = $006B696B;
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ANDROID_BUTTON_FIRST_LINE_A = $00F7F3F7;
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ANDROID_BUTTON_FIRST_LINE_B = $00EFF3EF;
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ANDROID_BUTTON_SECOND_LINE_A = $00EFF3EF;
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ANDROID_BUTTON_SECOND_LINE_B = $00F7F3F7;
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ANDROID_BUTTON_THIRD_LINE_A = $00EFEFEF;
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ANDROID_BUTTON_THIRD_LINE_B = $00F7F3F7;
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ANDROID_BUTTON_TOP_GRADIENT_A = $00EFEFEF;
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ANDROID_BUTTON_TOP_GRADIENT_B = $00EFEBEF;
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ANDROID_BUTTON_MIDDLE_GRADIENT_A = $00CBCECB;
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ANDROID_BUTTON_MIDDLE_GRADIENT_B = $00CECFCE;
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ANDROID_BUTTON_BOTTOM_GRADIENT_A = $00BDBABD;
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ANDROID_BUTTON_BOTTOM_GRADIENT_B = $00BABDBA;
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ANDROID_BUTTON_PREPRELAST_LINE_A = $00C6C3C6;
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ANDROID_BUTTON_PREPRELAST_LINE_B = $00C6C3C6;
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ANDROID_BUTTON_PRELAST_LINE_A = $00C6CBC6;
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ANDROID_BUTTON_PRELAST_LINE_B = $00CECBCE;
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ANDROID_BUTTON_LAST_LINE_A = $00D6D3D6;
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ANDROID_BUTTON_LAST_LINE_B = $00D6D7D6;
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// Sunken variants
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ANDROID_BUTTON_SUNKEN_FIRST_LINE_A = $0066F366;
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ANDROID_BUTTON_SUNKEN_FIRST_LINE_B = $0066F366;
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ANDROID_BUTTON_SUNKEN_SECOND_LINE_A = $0066F366;
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ANDROID_BUTTON_SUNKEN_SECOND_LINE_B = $0066F366;
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ANDROID_BUTTON_SUNKEN_THIRD_LINE_A = $0066EF66;
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ANDROID_BUTTON_SUNKEN_THIRD_LINE_B = $0066F366;
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ANDROID_BUTTON_SUNKEN_TOP_GRADIENT_A = $0066EF66;
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ANDROID_BUTTON_SUNKEN_TOP_GRADIENT_B = $0066EB66;
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ANDROID_BUTTON_SUNKEN_MIDDLE_GRADIENT_A = $0033CE33;
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ANDROID_BUTTON_SUNKEN_MIDDLE_GRADIENT_B = $0033CF33;
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ANDROID_BUTTON_SUNKEN_BOTTOM_GRADIENT_A = $0000BA00;
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ANDROID_BUTTON_SUNKEN_BOTTOM_GRADIENT_B = $0000BD00;
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ANDROID_BUTTON_SUNKEN_PREPRELAST_LINE_A = $0000C300;
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ANDROID_BUTTON_SUNKEN_PREPRELAST_LINE_B = $0000C300;
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ANDROID_BUTTON_SUNKEN_PRELAST_LINE_A = $0000CB00;
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ANDROID_BUTTON_SUNKEN_PRELAST_LINE_B = $0000CB00;
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ANDROID_BUTTON_SUNKEN_LAST_LINE_A = $0000D300;
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ANDROID_BUTTON_SUNKEN_LAST_LINE_B = $0000D700;
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{procedure TCDButtonDrawerAndroid.DrawToIntfImage(ADest: TFPImageCanvas;
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CDButton: TCDButton);
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begin
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end;
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procedure TCDButtonDrawerAndroid.DrawToCanvas(ADest: TCanvas; CDButton: TCDButton);
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var
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//TmpB: TBitmap;
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Str: string;
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begin
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// Button shape -> This crashes in Gtk2
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{ TmpB.Canvas.Brush.Color := CDButton.Color;
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TmpB.Canvas.Brush.Style := bsSolid;
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TmpB.Canvas.RoundRect(0, 0, TmpB.Width, TmpB.Height, 8, 8);
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CDButton.SetShape(TmpB);
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ADest.Draw(0, 0, TmpB);
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TmpB.Free;
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}
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ADest.Brush.Color := CDButton.Parent.Color;
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ADest.Brush.Style := bsSolid;
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ADest.Pen.Color := ADest.Brush.Color;
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ADest.RecTangle(0, 0, CDButton.Width, CDButton.Height);
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// Button image
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if CDButton.IsDown then
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DrawCDButtonDown(ADest, CDButton.GetRGBBackgroundColor)
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else if CDButton.Focused then
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DrawAndroidButton(ADest, GetAColor(CDButton.Color, 98))
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else
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DrawAndroidButton(ADest, GetAColor(CDButton.Color, 96));
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// Button text
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ADest.Font.Assign(CDButton.Font);
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ADest.Brush.Style := bsClear;
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ADest.Pen.Style := psSolid;
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Str := CDButton.Caption;
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ADest.TextOut((CDButton.Width - ADest.TextWidth(Str)) div 2,
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(CDButton.Height - ADest.TextHeight(Str)) div 2, Str);
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end;
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initialization
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RegisterButtonDrawer(TCDButtonDrawerAndroid.Create, dsAndroid);}
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{ TCDDrawerAndroid }
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procedure TCDDrawerAndroid.DrawAndroidAlternatedHorzLine(ADest: TCanvas;
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X1, X2, Y: Integer; AColor1, AColor2: TColor);
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var
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i: Integer;
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begin
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for i := X1 to X2-1 do
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begin
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if i mod 2 = 0 then ADest.Pixels[i, Y] := AColor1
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else ADest.Pixels[i, Y] := AColor2;
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end;
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end;
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procedure TCDDrawerAndroid.DrawAndroidMixedVertGradientFill(ADest: TCanvas;
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ARect: TRect; AStart1, AStop1, AStart2, AStop2: TColor);
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var
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RStart1, RStop1, RStart2, RStop2: Byte;
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GStart1, GStop1, GStart2, GStop2: Byte;
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BStart1, BStop1, BStart2, BStop2: Byte;
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RDiff1, GDiff1, BDiff1: Integer;
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RDiff2, GDiff2, BDiff2: Integer;
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Count, I: Integer;
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lColor1, lColor2: TColor;
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begin
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if IsRectEmpty(ARect) then Exit;
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RedGreenBlue(ColorToRGB(AStart1), RStart1, GStart1, BStart1);
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RedGreenBlue(ColorToRGB(AStop1), RStop1, GStop1, BStop1);
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RedGreenBlue(ColorToRGB(AStart2), RStart2, GStart2, BStart2);
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RedGreenBlue(ColorToRGB(AStop2), RStop2, GStop2, BStop2);
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RDiff1 := RStop1 - RStart1;
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GDiff1 := GStop1 - GStart1;
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BDiff1 := BStop1 - BStart1;
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RDiff2 := RStop2 - RStart2;
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GDiff2 := GStop2 - GStart2;
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BDiff2 := BStop2 - BStart2;
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Count := ARect.Bottom - ARect.Top;
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for I := 0 to Count-1 do
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begin
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lColor1 := RGBToColor(RStart1 + (i * RDiff1) div Count,
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GStart1 + (i * GDiff1) div Count,
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BStart1 + (i * BDiff1) div Count);
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lColor2 := RGBToColor(RStart2 + (i * RDiff2) div Count,
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GStart2 + (i * GDiff2) div Count,
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BStart2 + (i * BDiff2) div Count);
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// draw left to right, because LineTo does not draw last pixel
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DrawAndroidAlternatedHorzLine(ADest, ARect.Left, ARect.Right, ARect.Top+I, lColor1, lColor2);
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end;
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end;
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procedure TCDDrawerAndroid.DrawAndroidMixedFill(ADest: TCanvas; ARect: TRect;
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AColor1, AColor2: TColor);
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var
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I: Integer;
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lColor1, lColor2: TColor;
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begin
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for I := 0 to (ARect.Bottom - ARect.Top)-1 do
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begin
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if i mod 2 = 0 then
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begin
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lColor1 := AColor1;
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lColor2 := AColor2;
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end
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else
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begin
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lColor1 := AColor2;
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lColor2 := AColor1;
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end;
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// draw left to right, because LineTo does not draw last pixel
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DrawAndroidAlternatedHorzLine(ADest, ARect.Left, ARect.Right, ARect.Top+I, lColor1, lColor2);
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end;
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end;
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procedure TCDDrawerAndroid.CreateResources;
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begin
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bmpCheckbox := TBitmap.Create;
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bmpCheckboxChecked := TBitmap.Create;
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end;
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procedure TCDDrawerAndroid.LoadResources;
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begin
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bmpCheckbox.LoadFromLazarusResource('android_checkbox');
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bmpCheckboxChecked.LoadFromLazarusResource('android_checkbox_checked');
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// for now hardcoded to ldpi
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ScaleRasterImage(bmpCheckbox, 160, 96);
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ScaleRasterImage(bmpCheckboxChecked, 160, 96);
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end;
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procedure TCDDrawerAndroid.FreeResources;
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begin
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bmpCheckbox.Free;
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bmpCheckboxChecked.Free;
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end;
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function TCDDrawerAndroid.GetDrawStyle: TCDDrawStyle;
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begin
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Result := dsAndroid;
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end;
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function TCDDrawerAndroid.GetMeasures(AMeasureID: Integer): Integer;
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begin
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case AMeasureID of
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{ TCDEDIT_LEFT_TEXT_SPACING: Result := 4;
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TCDEDIT_RIGHT_TEXT_SPACING: Result := 3;
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TCDEDIT_TOP_TEXT_SPACING: Result := 3;
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TCDEDIT_BOTTOM_TEXT_SPACING: Result := 3;}
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//
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TCDCHECKBOX_SQUARE_HALF_HEIGHT: Result := 9;
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TCDCHECKBOX_SQUARE_HEIGHT: Result := 18;
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{ //
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TCDRADIOBUTTON_CIRCLE_HEIGHT: Result := 15;
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//
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TCDSCROLLBAR_BUTTON_WIDTH: Result := 17;
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TCDSCROLLBAR_LEFT_SPACING: Result := 17;
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TCDSCROLLBAR_RIGHT_SPACING: Result := 17;
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TCDSCROLLBAR_LEFT_BUTTON_POS: Result := 0;
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TCDSCROLLBAR_RIGHT_BUTTON_POS: Result := -17;
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//
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TCDTRACKBAR_LEFT_SPACING: Result := 9;
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TCDTRACKBAR_RIGHT_SPACING: Result := 9;
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TCDTRACKBAR_TOP_SPACING: Result := 5;
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TCDTRACKBAR_FRAME_HEIGHT: Result := 17;
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//
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TCDLISTVIEW_COLUMN_LEFT_SPACING: Result := 10;
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TCDLISTVIEW_COLUMN_RIGHT_SPACING: Result := 10;
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TCDLISTVIEW_COLUMN_TEXT_LEFT_SPACING: Result := 5;
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TCDLISTVIEW_LINE_TOP_SPACING: Result := 3;
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TCDLISTVIEW_LINE_BOTTOM_SPACING: Result := 3;}
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else
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Result := inherited GetMeasures(AMeasureID);
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end;
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end;
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procedure TCDDrawerAndroid.DrawTickmark(ADest: TCanvas; ADestPos: TPoint);
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begin
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// Don't draw anything, tickmarks are impressed into the general images
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end;
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procedure TCDDrawerAndroid.DrawButton(ADest: TCanvas; ASize: TSize;
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AState: TCDControlState; AStateEx: TCDButtonStateEx);
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var
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Str: string;
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lGlyphLeftSpacing: Integer = 0;
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lTextOutPos: TPoint;
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lGlyphCaptionHeight: Integer;
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lColor: TColor;
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lRect: TRect;
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begin
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// Background corners
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lColor := AStateEx.ParentRGBColor;
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ADest.Pixels[0, 0] := lColor;
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ADest.Pixels[1, 0] := lColor;
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ADest.Pixels[0, 1] := lColor;
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ADest.Pixels[ASize.cx-1, 0] := lColor;
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ADest.Pixels[ASize.cx-2, 0] := lColor;
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ADest.Pixels[ASize.cx-1, 1] := lColor;
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ADest.Pixels[0, ASize.cy-1] := lColor;
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ADest.Pixels[1, ASize.cy-1] := lColor;
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ADest.Pixels[0, ASize.cy-2] := lColor;
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ADest.Pixels[ASize.cx-1, ASize.cy-1] := lColor;
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ADest.Pixels[ASize.cx-2, ASize.cy-1] := lColor;
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ADest.Pixels[ASize.cx-1, ASize.cy-2] := lColor;
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// Darker corners
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lColor := ANDROID_BUTTON_CORNERS;
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ADest.Pixels[1, 1] := lColor;
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ADest.Pixels[2, 0] := lColor;
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ADest.Pixels[0, 2] := lColor;
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ADest.Pixels[ASize.cx-3, 0] := lColor;
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ADest.Pixels[ASize.cx-2, 1] := lColor;
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ADest.Pixels[ASize.cx-1, 2] := lColor;
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ADest.Pixels[0, ASize.cy-3] := lColor;
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ADest.Pixels[1, ASize.cy-2] := lColor;
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ADest.Pixels[2, ASize.cy-1] := lColor;
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ADest.Pixels[ASize.cx-1, ASize.cy-3] := lColor;
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ADest.Pixels[ASize.cx-2, ASize.cy-2] := lColor;
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ADest.Pixels[ASize.cx-3, ASize.cy-1] := lColor;
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// Button image
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if csfSunken in AState then
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begin
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// Top lines
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DrawAndroidAlternatedHorzLine(ADest, 3, ASize.cx-3, 0, ANDROID_BUTTON_SUNKEN_FIRST_LINE_A, ANDROID_BUTTON_SUNKEN_FIRST_LINE_B);
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DrawAndroidAlternatedHorzLine(ADest, 2, ASize.cx-2, 1, ANDROID_BUTTON_SUNKEN_SECOND_LINE_A, ANDROID_BUTTON_SUNKEN_SECOND_LINE_B);
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DrawAndroidAlternatedHorzLine(ADest, 1, ASize.cx-1, 2, ANDROID_BUTTON_SUNKEN_THIRD_LINE_A, ANDROID_BUTTON_SUNKEN_THIRD_LINE_B);
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// The central gradient
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lRect := Bounds(0, 3, ASize.cx, (ASize.cy-6) div 3+1);
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DrawAndroidMixedVertGradientFill(ADest, lRect, ANDROID_BUTTON_SUNKEN_TOP_GRADIENT_A,
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ANDROID_BUTTON_SUNKEN_MIDDLE_GRADIENT_A, ANDROID_BUTTON_SUNKEN_TOP_GRADIENT_B, ANDROID_BUTTON_SUNKEN_MIDDLE_GRADIENT_B);
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lRect := Bounds(0, 3+(ASize.cy-6) div 3, ASize.cx, (ASize.cy-6) div 3+1);
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DrawAndroidMixedFill(ADest, lRect, ANDROID_BUTTON_SUNKEN_MIDDLE_GRADIENT_A, ANDROID_BUTTON_SUNKEN_MIDDLE_GRADIENT_B);
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lRect := Bounds(0, 3+2*(ASize.cy-6) div 3, ASize.cx, (ASize.cy-6) div 3+1);
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DrawAndroidMixedVertGradientFill(ADest, lRect, ANDROID_BUTTON_SUNKEN_MIDDLE_GRADIENT_A,
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ANDROID_BUTTON_SUNKEN_BOTTOM_GRADIENT_A, ANDROID_BUTTON_SUNKEN_MIDDLE_GRADIENT_B, ANDROID_BUTTON_SUNKEN_BOTTOM_GRADIENT_B);
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// Bottom lines
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DrawAndroidAlternatedHorzLine(ADest, 1, ASize.cx-1, ASize.cy-3, ANDROID_BUTTON_SUNKEN_PREPRELAST_LINE_A, ANDROID_BUTTON_SUNKEN_PREPRELAST_LINE_B);
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DrawAndroidAlternatedHorzLine(ADest, 2, ASize.cx-2, ASize.cy-2, ANDROID_BUTTON_SUNKEN_PRELAST_LINE_A, ANDROID_BUTTON_SUNKEN_PRELAST_LINE_B);
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DrawAndroidAlternatedHorzLine(ADest, 3, ASize.cx-3, ASize.cy-1, ANDROID_BUTTON_SUNKEN_LAST_LINE_A, ANDROID_BUTTON_SUNKEN_LAST_LINE_B);
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end
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else
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begin
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// Top lines
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DrawAndroidAlternatedHorzLine(ADest, 3, ASize.cx-3, 0, ANDROID_BUTTON_FIRST_LINE_A, ANDROID_BUTTON_FIRST_LINE_B);
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DrawAndroidAlternatedHorzLine(ADest, 2, ASize.cx-2, 1, ANDROID_BUTTON_SECOND_LINE_A, ANDROID_BUTTON_SECOND_LINE_B);
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DrawAndroidAlternatedHorzLine(ADest, 1, ASize.cx-1, 2, ANDROID_BUTTON_THIRD_LINE_A, ANDROID_BUTTON_THIRD_LINE_B);
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// The central gradient
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lRect := Bounds(0, 3, ASize.cx, (ASize.cy-6) div 3+1);
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DrawAndroidMixedVertGradientFill(ADest, lRect, ANDROID_BUTTON_TOP_GRADIENT_A,
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ANDROID_BUTTON_MIDDLE_GRADIENT_A, ANDROID_BUTTON_TOP_GRADIENT_B, ANDROID_BUTTON_MIDDLE_GRADIENT_B);
|
|
lRect := Bounds(0, 3+(ASize.cy-6) div 3, ASize.cx, (ASize.cy-6) div 3+1);
|
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DrawAndroidMixedFill(ADest, lRect, ANDROID_BUTTON_MIDDLE_GRADIENT_A, ANDROID_BUTTON_MIDDLE_GRADIENT_B);
|
|
lRect := Bounds(0, 3+2*(ASize.cy-6) div 3, ASize.cx, (ASize.cy-6) div 3+1);
|
|
DrawAndroidMixedVertGradientFill(ADest, lRect, ANDROID_BUTTON_MIDDLE_GRADIENT_A,
|
|
ANDROID_BUTTON_BOTTOM_GRADIENT_A, ANDROID_BUTTON_MIDDLE_GRADIENT_B, ANDROID_BUTTON_BOTTOM_GRADIENT_B);
|
|
|
|
// Bottom lines
|
|
DrawAndroidAlternatedHorzLine(ADest, 1, ASize.cx-1, ASize.cy-3, ANDROID_BUTTON_PREPRELAST_LINE_A, ANDROID_BUTTON_PREPRELAST_LINE_B);
|
|
DrawAndroidAlternatedHorzLine(ADest, 2, ASize.cx-2, ASize.cy-2, ANDROID_BUTTON_PRELAST_LINE_A, ANDROID_BUTTON_PRELAST_LINE_B);
|
|
DrawAndroidAlternatedHorzLine(ADest, 3, ASize.cx-3, ASize.cy-1, ANDROID_BUTTON_LAST_LINE_A, ANDROID_BUTTON_LAST_LINE_B);
|
|
end;
|
|
|
|
if csfHasFocus in AState then
|
|
DrawFocusRect(ADest, Point(5, 5), Size(ASize.cx-10, ASize.cy-10));
|
|
|
|
// Position calculations
|
|
ADest.Font.Assign(AStateEx.Font);
|
|
Str := AStateEx.Caption;
|
|
lGlyphCaptionHeight := Max(ADest.TextHeight(Str), AStateEx.Glyph.Height);
|
|
lTextOutPos.X := (ASize.cx - ADest.TextWidth(Str) - AStateEx.Glyph.Width) div 2;
|
|
lTextOutPos.Y := (ASize.cy - lGlyphCaptionHeight) div 2;
|
|
lTextOutPos.X := Max(lTextOutPos.X, 5);
|
|
lTextOutPos.Y := Max(lTextOutPos.Y, 5);
|
|
|
|
// Button glyph
|
|
if not AStateEx.Glyph.Empty then
|
|
begin
|
|
ADest.Draw(lTextOutPos.X, lTextOutPos.Y, AStateEx.Glyph);
|
|
lGlyphLeftSpacing := AStateEx.Glyph.Width+5;
|
|
end;
|
|
|
|
// Button text
|
|
lTextOutPos.X := lTextOutPos.X + lGlyphLeftSpacing;
|
|
lTextOutPos.Y := (ASize.cy - ADest.TextHeight(Str)) div 2;
|
|
ADest.Brush.Style := bsClear;
|
|
ADest.Pen.Style := psSolid;
|
|
if csfSunken in AState then
|
|
begin
|
|
Inc(lTextOutPos.X);
|
|
Inc(lTextOutPos.Y);
|
|
end;
|
|
ADest.TextOut(lTextOutPos.X, lTextOutPos.Y, Str)
|
|
end;
|
|
|
|
procedure TCDDrawerAndroid.DrawCheckBoxSquare(ADest: TCanvas; ADestPos: TPoint;
|
|
ASize: TSize; AState: TCDControlState; AStateEx: TCDControlStateEx);
|
|
begin
|
|
if csfOn in AState then ADest.Draw(0, 0, bmpCheckboxChecked)
|
|
else ADest.Draw(0, 0, bmpCheckbox);
|
|
end;
|
|
|
|
initialization
|
|
{$I customdrawnimages/android.lrs}
|
|
|
|
RegisterDrawer(TCDDrawerAndroid.Create, dsAndroid);
|
|
end.
|
|
|