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TAChart: Add DoGetFontOrientation event to IChartDrawer interface

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git-svn-id: trunk@30000 -
This commit is contained in:
ask 2011-03-23 10:55:11 +00:00
parent e9ca674759
commit dfe7639567
1 changed files with 19 additions and 0 deletions
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19
components/tachart/tadrawutils.pas
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@ -60,6 +60,7 @@ type
end;
TChartColorToFPColorFunc = function (AColor: TChartColor): TFPColor;
TGetFontOrientationFunc = function (AFont: TFPCustomFont): Integer;
{ IChartDrawer }
@ -97,6 +98,7 @@ type
procedure SetBrush(ABrush: TFPCustomBrush);
procedure SetBrushParams(AStyle: TFPBrushStyle; AColor: TChartColor);
procedure SetFont(AValue: TFPCustomFont);
procedure SetGetFontOrientationFunc(AValue: TGetFontOrientationFunc);
procedure SetPen(APen: TFPCustomPen);
procedure SetPenParams(AStyle: TFPPenStyle; AColor: TChartColor);
function TextExtent(const AText: String): TPoint;
@ -109,6 +111,8 @@ type
property Pen: TFPCustomPen write SetPen;
property DoChartColorToFPColor: TChartColorToFPColorFunc
write SetDoChartColorToFPColorFunc;
property DoGetFontOrientation: TGetFontOrientationFunc
write SetGetFontOrientationFunc;
end;
{ TBasicDrawer }
@ -116,6 +120,7 @@ type
TBasicDrawer = class(TInterfacedObject, ISimpleTextOut)
strict protected
FChartColorToFPColorFunc: TChartColorToFPColorFunc;
FGetFontOrientationFunc: TGetFontOrientationFunc;
function GetFontAngle: Double; virtual; abstract;
function SimpleTextExtent(const AText: String): TPoint; virtual; abstract;
procedure SimpleTextOut(AX, AY: Integer; const AText: String); virtual; abstract;
@ -132,6 +137,7 @@ type
AStartIndex: Integer = 0; ANumPts: Integer = -1); virtual; abstract;
function Scale(ADistance: Integer): Integer; virtual;
procedure SetDoChartColorToFPColorFunc(AValue: TChartColorToFPColorFunc);
procedure SetGetFontOrientationFunc(AValue: TGetFontOrientationFunc);
function TextExtent(const AText: String): TPoint;
function TextExtent(AText: TStrings): TPoint;
function TextOut: TChartTextOut;
@ -161,6 +167,12 @@ begin
end;
end;
function DummyGetFontOrientationFunc(AFont: TFPCustomFont): Integer;
begin
Unused(AFont);
Result := 0;
end;
function FPColorToChartColor(AFPColor: TFPColor): TChartColor;
begin
Result :=
@ -261,6 +273,7 @@ end;
constructor TBasicDrawer.Create;
begin
FChartColorToFPColorFunc := @ChartColorToFPColor;
FGetFontOrientationFunc := @DummyGetFontOrientationFunc;
end;
procedure TBasicDrawer.DrawLineDepth(AX1, AY1, AX2, AY2, ADepth: Integer);
@ -297,6 +310,12 @@ begin
FChartColorToFPColorFunc := AValue;
end;
procedure TBasicDrawer.SetGetFontOrientationFunc(
AValue: TGetFontOrientationFunc);
begin
FGetFontOrientationFunc := AValue;
end;
function TBasicDrawer.TextExtent(const AText: String): TPoint;
var
sl: TStrings;