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TAChart: Extract TLineSeries.DrawSingleLineInStack procedure

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git-svn-id: trunk@27130 -
This commit is contained in:
ask 2010-08-18 02:49:17 +00:00
parent 73ef160d47
commit 823ef24846
1 changed files with 16 additions and 10 deletions
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26
components/tachart/taseries.pas
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@ -164,6 +164,7 @@ type
FPointer: TSeriesPointer; FPointer: TSeriesPointer;
FShowPoints: Boolean; FShowPoints: Boolean;
procedure DrawSingleLineInStack(ACanvas: TCanvas);
function GetShowLines: Boolean; function GetShowLines: Boolean;
procedure SetLinePen(AValue: TPen); procedure SetLinePen(AValue: TPen);
procedure SetLineType(AValue: TLineType); procedure SetLineType(AValue: TLineType);
@ -363,6 +364,21 @@ begin
end; end;
procedure TLineSeries.Draw(ACanvas: TCanvas); procedure TLineSeries.Draw(ACanvas: TCanvas);
var
ext: TDoubleRect;
begin
// Do not draw anything if the series extent does not intersect CurrentExtent.
ext.a := AxisToGraph(Source.Extent.a);
ext.b := AxisToGraph(Source.Extent.b);
if LineType = ltFromOrigin then
ExpandRect(ext, AxisToGraph(ZeroDoublePoint));
if not RectIntersectsRect(ext, ParentChart.CurrentExtent) then exit;
PrepareGraphPoints(ext, LineType <> ltFromOrigin);
DrawSingleLineInStack(ACanvas);
end;
procedure TLineSeries.DrawSingleLineInStack(ACanvas: TCanvas);
var var
points: array of TPoint; points: array of TPoint;
pointCount: Integer = 0; pointCount: Integer = 0;
@ -443,18 +459,8 @@ var
var var
i: Integer; i: Integer;
ai: TPoint; ai: TPoint;
ext: TDoubleRect;
p: TDoublePoint; p: TDoublePoint;
begin begin
// Do not draw anything if the series extent does not intersect CurrentExtent.
ext.a := AxisToGraph(Source.Extent.a);
ext.b := AxisToGraph(Source.Extent.b);
if LineType = ltFromOrigin then
ExpandRect(ext, AxisToGraph(ZeroDoublePoint));
if not RectIntersectsRect(ext, ParentChart.CurrentExtent) then exit;
PrepareGraphPoints(ext, LineType <> ltFromOrigin);
DrawLines; DrawLines;
DrawLabels(ACanvas); DrawLabels(ACanvas);