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unit OpenSoftStyle;
{$mode objfpc}{$H+}
interface
uses
Classes, fpgui, gfxbase;
type
TGradientDirection = (gdTopToBottom, gdBottomToTop, gdLeftToRight, gdRightToLeft);
TCalcGradientEndX = function(Y, H: Integer): Integer;
TOpenSoftStyle = class(TDefaultStyle)
private
procedure PaintGradient(pCanvas: TGfxCanvas; const R: TRect; StartColor, EndColor: TColor; Direction: TGradientDirection; GradLines: Integer = -1);
public
// Colors
function GetGUIColor(Color: TColor): TGfxColor; override;
// Buttons (todo)
procedure DrawButtonFace(Canvas: TGfxCanvas; const ARect: TRect; Flags: TButtonFlags); override;
// GroupBox
procedure DrawGroupBox(Canvas: TGfxCanvas; const ARect: TRect; const ALabel: String; WidgetState: TWidgetState); override;
end;
var
FOpenSoftStyle: TOpenSoftStyle;
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: TGfxCanvas; const R: TRect; StartColor, EndColor: TColor; Direction: TGradientDirection; GradLines: Integer = -1);
var
X, i, w, h, Count: Integer;
EndCol, StartCol, AddCol, 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.r := (EndCol.r - StartCol.r) / GradLines;
AddCol.g := (EndCol.g - StartCol.g) / GradLines;
AddCol.b := (EndCol.b - StartCol.b) / GradLines;
// Canvas.Pen.Style := psSolid;
pCanvas.SaveState;
// Canvas.Start;
try
StartColor := TColor(Round(StartCol.r), Round(StartCol.g), Round(StartCol.b));
// Canvas.Pen.Color := StartColor;
pCanvas.SetColor(GetGUIColor(StartColor));
for i := 0 to Count - 1 do
begin
if Direction in [gdTopToBottom, gdBottomToTop] then
begin
Canvas.MoveTo(R.Left, R.Top + i);
if Assigned(CalcEndX) then
X := CalcEndX(i, Count)
else
X := 0;
Canvas.LineTo(R.Right + X, R.Top + i);
end
else
begin
Canvas.MoveTo(R.Left + i, R.Top);
Canvas.LineTo(R.Left + i, R.Bottom);
end;
StartCol.r := StartCol.r + AddCol.r;
StartCol.g := StartCol.g + AddCol.g;
StartCol.b := StartCol.b + AddCol.b;
EndColor := RGB(Round(StartCol.r), Round(StartCol.g), Round(StartCol.b));
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 := rgbaWindow;
clMenu: Result := 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 := rgbaWindow;
// cl3DShadow: Result := rgbaDkWhite;
// clGrayText: Result := GetUIColor(clGray);
// clBtnText: Result := GetUIColor(clBlack);
// cl3DHighlight: Result := GetUIColor(clWhite);
cl3DDkShadow: Result := GetUIColor(clMidnightBlue);
// cl3DLight: Result := GetUIColor(clDarkWhite);
// clInfoText: Result := GetUIColor(clBlack);
// clInfoBk: Result := GetUIColor(clLightYellow);
//
// else Result := GetUIColor(clWhite);
end;
end;
procedure TOpenSoftStyle.DrawButtonFace(Canvas: TGfxCanvas; const ARect: TRect;
Flags: TButtonFlags);
begin
// inherited DrawButtonFace(Canvas, ARect, Flags);
PaintGradient(Canvas, ARect, Flags);
Draw3DFrame(Canvas, ARect, cl3DHighlight, cl3DLight, cl3DDkShadow, cl3DShadow);
end;
procedure TOpenSoftStyle.DrawGroupBox(Canvas: TGfxCanvas; const ARect: TRect;
const ALabel: String; WidgetState: TWidgetState);
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
FOpenSoftStyle := TOpenSoftStyle.Create(Application.Display);
finalization
if Assigned(FOpenSoftStyle) then
FOpenSoftStyle.Free;
end.
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