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TAChart: Add TChart.Proportional property

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git-svn-id: trunk@27069 -
This commit is contained in:
ask 2010-08-12 12:14:17 +00:00
parent 2fd8c5370e
commit 31fc5cd0a0
1 changed files with 17 additions and 0 deletions

17
components/tachart/tagraph.pas
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@ -166,6 +166,7 @@ type
FCurrentExtent: TDoubleRect;
FIsZoomed: Boolean;
FOffset: TDoublePoint; // Coordinates transformation
FProportional: Boolean;
FReticuleMode: TReticuleMode;
FReticulePos: TPoint;
FScale: TDoublePoint; // Coordinates transformation
@ -193,6 +194,7 @@ type
procedure SetLegend(Value: TChartLegend);
procedure SetLogicalExtent(const AValue: TDoubleRect);
procedure SetMargins(AValue: TChartMargins);
procedure SetProportional(AValue: Boolean);
procedure SetReticuleMode(const AValue: TReticuleMode);
procedure SetReticulePos(const AValue: TPoint);
procedure SetTitle(Value: TChartTitle);
@ -279,6 +281,8 @@ type
property LeftAxis: TChartAxis index 2 read GetAxis write SetAxis stored false;
property Legend: TChartLegend read FLegend write SetLegend;
property Margins: TChartMargins read FMargins write SetMargins;
property Proportional: Boolean
read FProportional write SetProportional default false;
property ReticuleMode: TReticuleMode
read FReticuleMode write SetReticuleMode default rmNone;
property Series: TChartSeriesList read FSeries;
@ -532,6 +536,12 @@ begin
@FCurrentExtent.a.Y, @FCurrentExtent.b.Y);
FScale.X := rX.CalcScale(1);
FScale.Y := rY.CalcScale(-1);
if Proportional then begin
if FScale.X > FScale.Y then
FScale.X := FScale.Y
else
FScale.Y := FScale.Y;
end;
FOffset.X := rX.CalcOffset(FScale.X);
FOffset.Y := rY.CalcOffset(FScale.Y);
rX.UpdateMinMax(@XImageToGraph);
@ -903,6 +913,13 @@ begin
Invalidate;
end;
procedure TChart.SetProportional(AValue: Boolean);
begin
if FProportional = AValue then exit;
FProportional := AValue;
Invalidate;
end;
procedure TChart.SetChildOrder(Child: TComponent; Order: Integer);
var
i: Integer;