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TAChart: Add TChartAxis.Range property

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git-svn-id: trunk@31822 -
This commit is contained in:
ask 2011-07-30 06:41:55 +00:00
parent c61219fe79
commit aa51debce9
4 changed files with 100 additions and 15 deletions
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26
components/tachart/tachartaxis.pas
View File

@ -110,6 +110,7 @@ type
FInverted: Boolean;
FMinors: TChartMinorAxisList;
FOnMarkToText: TChartAxisMarkToTextEvent;
FRange: TChartRange;
FTitle: TChartAxisTitle;
FTransformations: TChartAxisTransformations;
FZPosition: TChartDistance;
@ -122,6 +123,7 @@ type
procedure SetMarks(AValue: TChartAxisMarks);
procedure SetMinors(AValue: TChartMinorAxisList);
procedure SetOnMarkToText(AValue: TChartAxisMarkToTextEvent);
procedure SetRange(AValue: TChartRange);
procedure SetTitle(AValue: TChartAxisTitle);
procedure SetTransformations(AValue: TChartAxisTransformations);
procedure SetZPosition(AValue: TChartDistance);
@ -155,6 +157,7 @@ type
property Inverted: boolean read FInverted write SetInverted default false;
property Marks: TChartAxisMarks read GetMarks write SetMarks;
property Minors: TChartMinorAxisList read FMinors write SetMinors;
property Range: TChartRange read FRange write SetRange;
property TickLength default DEF_TICK_LENGTH;
property Title: TChartAxisTitle read FTitle write SetTitle;
property Transformations: TChartAxisTransformations
@ -233,6 +236,8 @@ type
var ARect: TRect; AAlignment: TChartAxisAlignment; ADelta: Integer);
function TransformByAxis(
AAxisList: TChartAxisList; AIndex: Integer): TChartAxisTransformations;
procedure UpdateBoundsByAxisRange(
AAxisList: TChartAxisList; AIndex: Integer; var AMin, AMax: Double);
implementation
@ -277,6 +282,18 @@ begin
Result := VIdentityTransform;
end;
procedure UpdateBoundsByAxisRange(
AAxisList: TChartAxisList; AIndex: Integer; var AMin, AMax: Double);
begin
if not InRange(AIndex, 0, AAxisList.Count - 1) then exit;
with AAxisList[AIndex].Range do begin
if UseMin then
AMin := Min;
if UseMax then
AMax := Max;
end;
end;
{ TChartAxisEnumerator }
function TChartAxisEnumerator.GetCurrent: TChartAxis;
@ -407,6 +424,7 @@ begin
FListener := TListener.Create(@FTransformations, @StyleChanged);
FMarks := TChartAxisMarks.Create(ACollection.Owner as TCustomChart);
FMinors := TChartMinorAxisList.Create(Self);
FRange := TChartRange.Create(ACollection.Owner as TCustomChart);
TickLength := DEF_TICK_LENGTH;
FTitle := TChartAxisTitle.Create(ACollection.Owner as TCustomChart);
end;
@ -414,6 +432,7 @@ end;
destructor TChartAxis.Destroy;
begin
FreeAndNil(FTitle);
FreeAndNil(FRange);
FreeAndNil(FMinors);
FreeAndNil(FListener);
FreeAndNil(FHelper);
@ -710,6 +729,13 @@ begin
StyleChanged(Self);
end;
procedure TChartAxis.SetRange(AValue: TChartRange);
begin
if FRange = AValue then exit;
FRange.Assign(AValue);
StyleChanged(Range);
end;
procedure TChartAxis.SetTitle(AValue: TChartAxisTitle);
begin
FTitle.Assign(AValue);

2
components/tachart/tacustomseries.pas
View File

@ -307,6 +307,8 @@ procedure TCustomChartSeries.GetGraphBounds(var ABounds: TDoubleRect);
begin
GetBounds(ABounds);
with ABounds do begin
UpdateBoundsByAxisRange(FChart.AxisList, AxisIndexX, a.X, b.X);
UpdateBoundsByAxisRange(FChart.AxisList, AxisIndexY, a.Y, b.Y);
TransformByAxis(FChart.AxisList, AxisIndexX).UpdateBounds(a.X, b.X);
TransformByAxis(FChart.AxisList, AxisIndexY).UpdateBounds(a.Y, b.Y);
if IsRotated then begin

2
components/tachart/taseries.pas
View File

@ -1222,7 +1222,7 @@ var
ic: IChartTCanvasDrawer;
begin
if Supports(ADrawer, IChartTCanvasDrawer, ic) and Assigned(FOnDraw) then
FOnDraw(ic.Canvas, FChart.ClipRect);
FOnDraw(ic.Canvas, FChart.ClipRect);
end;
procedure TUserDrawnSeries.GetBounds(var ABounds: TDoubleRect);

85
components/tachart/tatypes.pas
View File

@ -307,6 +307,25 @@ type
EExtentError = class(EChartError);
TChartRange = class(TChartElement)
private
FBounds: array [1..2] of Double;
FUseBounds: array [1..2] of Boolean;
function GetBounds(AIndex: Integer): Double;
function GetUseBounds(AIndex: integer): Boolean;
function IsBoundsStored(AIndex: Integer): Boolean;
procedure SetBounds(AIndex: Integer; const AValue: Double);
procedure SetUseBounds(AIndex: Integer; AValue: Boolean);
public
procedure CheckBoundsOrder;
published
property Max: Double index 2 read GetBounds write SetBounds stored IsBoundsStored;
property Min: Double index 1 read GetBounds write SetBounds stored IsBoundsStored;
property UseMax: Boolean index 2 read GetUseBounds write SetUseBounds default false;
property UseMin: Boolean index 1 read GetUseBounds write SetUseBounds default false;
end;
{ TChartExtent }
TChartExtent = class(TChartElement)
@ -316,20 +335,20 @@ type
function GetBounds(AIndex: Integer): Double;
function GetUseBounds(AIndex: integer): Boolean;
function IsBoundsStored(AIndex: Integer): boolean;
function IsBoundsStored(AIndex: Integer): Boolean;
procedure SetBounds(AIndex: Integer; const AValue: Double);
procedure SetUseBounds(AIndex: Integer; AValue: Boolean);
public
procedure CheckBoundsOrder;
published
property XMin: Double index 1 read GetBounds write SetBounds stored IsBoundsStored;
property YMin: Double index 2 read GetBounds write SetBounds stored IsBoundsStored;
property XMax: Double index 3 read GetBounds write SetBounds stored IsBoundsStored;
property YMax: Double index 4 read GetBounds write SetBounds stored IsBoundsStored;
property UseXMin: Boolean index 1 read GetUseBounds write SetUseBounds default false;
property UseYMin: Boolean index 2 read GetUseBounds write SetUseBounds default false;
property UseXMax: Boolean index 3 read GetUseBounds write SetUseBounds default false;
property UseXMin: Boolean index 1 read GetUseBounds write SetUseBounds default false;
property UseYMax: Boolean index 4 read GetUseBounds write SetUseBounds default false;
property UseYMin: Boolean index 2 read GetUseBounds write SetUseBounds default false;
property XMax: Double index 3 read GetBounds write SetBounds stored IsBoundsStored;
property XMin: Double index 1 read GetBounds write SetBounds stored IsBoundsStored;
property YMax: Double index 4 read GetBounds write SetBounds stored IsBoundsStored;
property YMin: Double index 2 read GetBounds write SetBounds stored IsBoundsStored;
end;
TRectArray = array [1..4] of Integer;
@ -1015,18 +1034,46 @@ begin
StyleChanged(Self);
end;
{ TChartExtent }
{ TChartRange }
function TChartExtent.GetUseBounds(AIndex: Integer): Boolean;
procedure TChartRange.CheckBoundsOrder;
begin
if UseMin and UseMax and (Min >= Max) then begin
UseMin := false;
UseMax := false;
raise EExtentError.Create('ChartRange: Min >= Max');
end;
end;
function TChartRange.GetBounds(AIndex: Integer): Double;
begin
Result := FBounds[AIndex];
end;
function TChartRange.GetUseBounds(AIndex: integer): Boolean;
begin
Result := FUseBounds[AIndex];
end;
function TChartExtent.IsBoundsStored(AIndex: Integer): boolean;
function TChartRange.IsBoundsStored(AIndex: Integer): Boolean;
begin
Result := FExtent.coords[AIndex] <> 0;
Result := FBounds[AIndex] <> 0;
end;
procedure TChartRange.SetBounds(AIndex: Integer; const AValue: Double);
begin
FBounds[AIndex] := AValue;
StyleChanged(Self);
end;
procedure TChartRange.SetUseBounds(AIndex: Integer; AValue: Boolean);
begin
FUseBounds[AIndex] := AValue;
StyleChanged(Self);
end;
{ TChartExtent }
procedure TChartExtent.CheckBoundsOrder;
begin
if UseXMin and UseXMax and (XMin >= XMax) then begin
@ -1046,10 +1093,14 @@ begin
Result := FExtent.coords[AIndex];
end;
procedure TChartExtent.SetUseBounds(AIndex: Integer; AValue: Boolean);
function TChartExtent.GetUseBounds(AIndex: Integer): Boolean;
begin
FUseBounds[AIndex] := AValue;
StyleChanged(Self);
Result := FUseBounds[AIndex];
end;
function TChartExtent.IsBoundsStored(AIndex: Integer): Boolean;
begin
Result := FExtent.coords[AIndex] <> 0;
end;
procedure TChartExtent.SetBounds(AIndex: Integer; const AValue: Double);
@ -1058,6 +1109,12 @@ begin
StyleChanged(Self);
end;
procedure TChartExtent.SetUseBounds(AIndex: Integer; AValue: Boolean);
begin
FUseBounds[AIndex] := AValue;
StyleChanged(Self);
end;
{ TChartMargins }
procedure TChartMargins.Assign(Source: TPersistent);