TSubChartTool and center title without AdjustFrame

TeeChart VCL for Borland/CodeGear/Embarcadero RAD Studio, Delphi and C++ Builder.
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Eic
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TSubChartTool and center title without AdjustFrame

Post by Eic » Wed Jun 28, 2017 3:32 pm

Hi,

I want to center the title of my subgraph with AdjustFrame = false.

I use this code:

Code: Select all

TChart * Chart1 = new TChart(this);
	Chart1->Parent = this;
	Chart1->Align = alClient;

	TSubChartTool *SubChart1 = new TSubChartTool(NULL);
	Chart1->Tools->Add(SubChart1);

	TChart * Chart2 = SubChart1->Charts->AddChart("MySubChart");
	Chart2->AddSeries(new TPointSeries(Chart1))->FillSampleValues();
	Chart2->Legend->Visible = true;
	Chart2->Title->Caption = "SubChart Title";
	Chart2->Title->Visible = true;
	Chart2->Title->AdjustFrame = false;

	SubChart1->Charts->Items[0]->Left = SubChart1->ParentChart->Width / 2;
	SubChart1->Charts->Items[0]->Width = SubChart1->ParentChart->Width / 2;
In this situation, the title is not centered above my graph, as you can see in the attachment file.

While waiting for the bug fix, is there a solution ?
Attachments
SubChart Title.png
SubChart Title.png (10.35 KiB) Viewed 8712 times

Yeray
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Re: TSubChartTool and center title without AdjustFrame

Post by Yeray » Fri Jun 30, 2017 10:09 am

Hello,

I'm not sure to understand why do you set AdjustFrame to false if you want the title to move with the Chart. Removing that line of code the title move to the desired position, isn't it?
Best Regards,
ImageYeray Alonso
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Steema Software
Av. Montilivi 33, 17003 Girona, Catalonia (SP)
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Eic
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Joined: Fri Mar 24, 2017 12:00 am

Re: TSubChartTool and center title without AdjustFrame

Post by Eic » Fri Jun 30, 2017 10:21 am

Hi,

I just want my title to be centered on the graph + legend.
When the line is deleted, the title is centered above the graph, without taking into account the place taken by the plenum.
There may be another property to do that?

I attached the file "Test 2" with the expected centering in red for the title
Attachments
Test 2.png
Test 2.png (20.62 KiB) Viewed 8696 times

Yeray
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Re: TSubChartTool and center title without AdjustFrame

Post by Yeray » Fri Jun 30, 2017 11:32 am

Hello,

You can use the SubChart's (Chart2 in your example) OnBeforeDrawChart event to manually reposition its Title. Ie (delphi):

Code: Select all

procedure TForm1.SubChartBeforeDraw(Sender: TObject);
begin
  with TChart(Sender) do
  begin
    Title.Top:=Top - Canvas.TextHeight(Title.Caption);
    Title.Left:=Left+(Width div 2) - (Canvas.TextWidth(Title.Caption) div 2);
  end;
end;
Best Regards,
ImageYeray Alonso
Development & Support
Steema Software
Av. Montilivi 33, 17003 Girona, Catalonia (SP)
Image Image Image Image Image Image Please read our Bug Fixing Policy

Eic
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Posts: 5
Joined: Fri Mar 24, 2017 12:00 am

Re: TSubChartTool and center title without AdjustFrame

Post by Eic » Fri Jun 30, 2017 11:44 am

Thank you for this temporary solution.

This bug will be corrected, or is it normal ?

Yeray
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Re: TSubChartTool and center title without AdjustFrame

Post by Yeray » Fri Jun 30, 2017 1:43 pm

Hello,

The AdjustFrame property was designed to align the title with the ChartRect, not with the whole TChart.
If we changed this behaviour we'd break the compatibility. However, we could add some extra property to choose where to align the chart with more detail.
Best Regards,
ImageYeray Alonso
Development & Support
Steema Software
Av. Montilivi 33, 17003 Girona, Catalonia (SP)
Image Image Image Image Image Image Please read our Bug Fixing Policy

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