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{
fpGUI - Free Pascal GUI Library
OpenSoft look-and-feel style implementation
Copyright (C) 2006 - 2007 See the file AUTHORS.txt, included in this
distribution, for details of the copyright.
See the file COPYING.modifiedLGPL, included in this distribution,
for details about redistributing fpGUI.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
}
unit OpenSoftStyle;
{$mode objfpc}{$H+}
interface
uses
Classes
,fpGUI
,gfxBase
,fpGFX
;
type
TGradientDirection = (gdTopToBottom, gdBottomToTop, gdLeftToRight, gdRightToLeft);
TCalcGradientEndX = function(Y, H: Integer): Integer;
TOpenSoftStyle = class(TBasicStyle)
private
procedure PaintGradient(pCanvas: TFCanvas; const R: TRect; StartColor, EndColor: TColor; Direction: TGradientDirection; GradLines: Integer = -1);
public
// Colors
function GetGUIColor(Color: TColor): TGfxColor; override;
// Buttons (todo)
// procedure DrawButtonFace(Canvas: TFCanvas; const ARect: TRect; Flags: TFButtonFlags); override;
// GroupBox
procedure DrawGroupBox(Canvas: TFCanvas; const ARect: TRect; const ALabel: String; WidgetState: TFWidgetState); override;
end;
implementation
const
// Some predefined colors:
rgbaDkBlue: TGfxColor = (Red: $0000; Green: $0000; Blue: $8000; Alpha: $0000);
rgbaLtYellow: TGfxColor = (Red: $ffff; Green: $ffff; Blue: $e100; Alpha: $0000);
rgbaWindowText: TGfxColor = (Red: $0000; Green: $0000; Blue: $0000; Alpha: $0000);
rgbaWindow: TGfxColor = (Red: $efef; Green: $efef; Blue: $efef; Alpha: $0000);
rgbaDkGrey: TGfxColor = (Red: $8686; Green: $8686; Blue: $8686; Alpha: $0000);
rgbaGbAALtGrey: TGfxColor = (Red: $baba; Green: $baba; Blue: $baba; Alpha: $0000);
rgbaGbAADkGrey: TGfxColor = (Red: $7878; Green: $7878; Blue: $7878; Alpha: $0000);
{
procedure DrawGradient(Canvas: TCanvas; const R: TRect; StartColor, EndColor: TColor;
Direction: TGradientDirection; GradLines: Integer = -1; CalcEndX: TCalcGradientEndX = nil);
procedure DrawGradientEx(Canvas: TCanvas; const R: TRect; StartColor: TColor;
StartToMidHeight: Integer; MidColor, EndColor: TColor;
Direction: TGradientDirection; CalcEndX: TCalcGradientEndX = nil);
procedure ToRGB(c: TColor; out rgb: TRGB);
var
l: TColorRef;
begin
c := ColorFromColormap(c);
l := ColorToRGB(c);
rgb.r := TRGBValue(l).r;
rgb.g := TRGBValue(l).g;
rgb.b := TRGBValue(l).b;
end;
}
{ TOpenSoftStyle }
procedure TOpenSoftStyle.PaintGradient(pCanvas: TFCanvas; const R: TRect;
StartColor, EndColor: TColor; Direction: TGradientDirection;
GradLines: Integer = -1);
var
X: integer;
i: integer;
w: integer;
h: integer;
Count: integer;
EndCol: TGfxColor;
StartCol: TGfxColor;
AddCol: TGfxColor;
Tmp: TGfxColor;
begin
(*
w := R.Right - R.Left - 1;
h := R.Bottom - R.Top - 1;
if (w <= 0) or (h <= 0) then
Exit; //==>
StartCol := GetGUIColor(StartColor);
EndCol := GetGUIColor(EndColor);
case Direction of
gdTopToBottom:
Count := h;
gdLeftToRight:
Count := w;
gdBottomToTop:
begin
Count := h;
Tmp := EndCol;
EndCol := StartCol;
StartCol := Tmp;
end;
gdRightToLeft:
begin
Count := w;
Tmp := EndCol;
EndCol := StartCol;
StartCol := Tmp;
end;
else
Exit; //==>
end;
if GradLines < 0 then
GradLines := Count;
AddCol.Red := (EndCol.Red - StartCol.Red) div GradLines;
AddCol.Green := (EndCol.Green - StartCol.Green) div GradLines;
AddCol.Blue := (EndCol.Blue - StartCol.Blue) div GradLines;
// Canvas.Pen.Style := psSolid;
pCanvas.SaveState;
// Canvas.Start;
try
// StartColor := TColor(Round(StartCol.Red), Round(StartCol.Green), Round(StartCol.Blue));
// Canvas.Pen.Color := StartColor;
pCanvas.SetColor(GetGUIColor(StartColor));
for i := 0 to Count - 1 do
begin
if Direction in [gdTopToBottom, gdBottomToTop] then
begin
// pCanvas.MoveTo(R.Left, R.Top + i);
// if Assigned(CalcEndX) then
// X := CalcEndX(i, Count)
// else
X := 0;
// pCanvas.LineTo(R.Right + X, R.Top + i);
pCanvas.DrawLine(Point(R.Left, R.Top + i), Point(R.Right + X, R.Top + i));
end
else
begin
pCanvas.DrawLine(Point(R.Left + i, R.Top), Point(R.Left + i, R.Bottom))
// pCanvas.MoveTo(R.Left + i, R.Top);
// pCanvas.LineTo(R.Left + i, R.Bottom);
end;
StartCol.Red := StartCol.Red + AddCol.Red;
StartCol.Green := StartCol.Green + AddCol.Green;
StartCol.Blue := StartCol.Blue + AddCol.Blue;
EndColor := RGB(Round(StartCol.Red), Round(StartCol.Green), Round(StartCol.Blue));
if StartColor <> EndColor then
begin
// Canvas.Pen.Color := EndColor;
pCanvas.SetColor(GetGUIColor(EndColor));
StartColor := EndColor;
end;
end; // for
finally
// Canvas.Stop;
pCanvas.RestoreState;
end;
*)
end;
function TOpenSoftStyle.GetGUIColor(Color: TColor): TGfxColor;
begin
Result := inherited GetGUIColor(Color);
case Color of
// UI element colors
clScrollBar: Result := GetUIColor(clLightGrey); //rgbaWindow;
clMenu: Result := GetUIColor(clLightGrey); //rgbaWindow;
// clWindow: Result := GetUIColor(clWhite);
// clMenuText: Result := GetUIColor(clBlack);
// clWindowText: Result := GetUIColor(clBlack);
// clAppWorkSpace: Result := GetUIColor(clGray);
// clHighlight: Result := GetUIColor(clNavy);
// clHighlightText: Result := GetUIColor(clWhite);
cl3DFace: Result := GetUIColor(clLightGrey); //rgbaWindow;
// cl3DShadow: Result := rgbaDkWhite;
// clGrayText: Result := GetUIColor(clGray);
// clBtnText: Result := GetUIColor(clBlack);
// cl3DHighlight: Result := GetUIColor(clWhite);
cl3DDkShadow: Result := GetUIColor(clBlack);
// cl3DLight: Result := GetUIColor(clDarkWhite);
// clInfoText: Result := GetUIColor(clBlack);
// clInfoBk: Result := GetUIColor(clLightYellow);
//
// else Result := GetUIColor(clWhite);
end;
end;
(*
procedure TOpenSoftStyle.DrawButtonFace(Canvas: TFCanvas; const ARect: TRect;
Flags: TFButtonFlags);
begin
// inherited DrawButtonFace(Canvas, ARect, Flags);
// PaintGradient(Canvas, ARect, Flags);
Draw3DFrame(Canvas, ARect, cl3DHighlight, cl3DLight, cl3DDkShadow, cl3DShadow);
end;
*)
procedure TOpenSoftStyle.DrawGroupBox(Canvas: TFCanvas; const ARect: TRect;
const ALabel: String; WidgetState: TFWidgetState);
var
TitleWidth, TitleHeight, TopLine: Integer;
begin
TitleWidth := Canvas.TextWidth(ALabel);
TitleHeight := Canvas.FontCellHeight;
TopLine := ARect.Top + TitleHeight div 3;
Canvas.SetColor(rgbaDkGrey);
// box outline
with ARect do
begin
// top
Canvas.DrawLine(Point(Left + 2, TopLine), Point(Left + 12, TopLine));
Canvas.DrawLine(Point(Left + TitleWidth + 16, TopLine), Point(Right - 2, TopLine));
// right
Canvas.DrawLine(Point(Right-1, TopLine + 2), Point(Right-1, Bottom - 2));
// bottom
Canvas.DrawLine(Point(Right - 3, Bottom-1), Point(Left + 1, Bottom-1));
// left
Canvas.DrawLine(Point(Left, Bottom - 3), Point(Left, TopLine + 1));
end;
// Text caption
SetUIColor(Canvas, clWindowText);
DrawText(Canvas, ARect.TopLeft + Point(14, 0), ALabel, WidgetState);
{ Anti-Aliasing - Top/Left }
Canvas.SetColor(rgbaGbAALtGrey);
Canvas.DrawPoint(ARect.TopLeft + Point(0, TopLine+1));
Canvas.DrawPoint(ARect.TopLeft + Point(1, TopLine));
Canvas.SetColor(rgbaGbAADkGrey);
Canvas.DrawPoint(ARect.TopLeft + Point(1, TopLine+1));
{ Anti-Aliasing - Top/Right }
Canvas.SetColor(rgbaGbAALtGrey);
Canvas.DrawPoint(ARect.TopLeft + Point(ARect.Right-1, TopLine+1));
Canvas.DrawPoint(ARect.TopLeft + Point(ARect.Right-2, TopLine));
Canvas.SetColor(rgbaGbAADkGrey);
Canvas.DrawPoint(ARect.TopLeft + Point(ARect.Right-2, TopLine+1));
{ Anti-Aliasing - Bottom/Right }
Canvas.SetColor(rgbaGbAALtGrey);
Canvas.DrawPoint(ARect.TopLeft + Point(ARect.Right-1, ARect.Bottom-2));
Canvas.DrawPoint(ARect.TopLeft + Point(ARect.Right-2, ARect.Bottom-1));
Canvas.SetColor(rgbaGbAADkGrey);
Canvas.DrawPoint(ARect.TopLeft + Point(ARect.Right-2, ARect.Bottom-2));
{ Anti-Aliasing - Bottom/Left }
Canvas.SetColor(rgbaGbAALtGrey);
Canvas.DrawPoint(ARect.TopLeft + Point(0, ARect.Bottom-2));
Canvas.DrawPoint(ARect.TopLeft + Point(1, ARect.Bottom-1));
Canvas.SetColor(rgbaGbAADkGrey);
Canvas.DrawPoint(ARect.TopLeft + Point(1, ARect.Bottom-2));
end;
//initialization
//finalization
// gStyleManager.RegisterClass('OpenSoft', TOpenSoftStyle);
end.
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