No transparency when using outline

[Metman]

Hi

I noticed this problem a while ago, but now its just getting to me!

Capture1.png (26.93 KiB) Viewed 11310 times

When I add an outline to a line series and add an outline width=3, color=clYellow and transparency=50% I don't get any transparency when I overlay the series on top of another series.

I don't in fact get any transparency either when working in the chart editor in the IDE.

This functionality always worked well in previous versions.

Bruce.

[Sandra]

Hello Bruce,

I am afraid the problem you are experiencing doesn't occur for me, the outline transparency works fine here. Could you please arrange a simple project where we can reproduce the problem here because we can find a good solution for you?

Thanks in advance,

[Metman]

Hi Sandra

I have created a project and I get exactly the same results.

The problem might be how I think the chart editor works. I thought logically that the transparency of the outline was controlled by the track bar in the first screen shot. Now I have looked a bit deeper this is probably not correct, because when I look at the object inspector I don't seen any transparency property for outline to match the value in the track bar.

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Capture7.png (43.35 KiB) Viewed 11288 times

If I set transparency at this level (see second screen shot) the line and the outline do become transparent.

I thought because there are two track bars for transparency one is for the line, and one is for the outline, and the transparency for line and outline are independent of each other, because maybe the outline is drawn first and line is drawn on top. If this isn't the case what is the purpose of the track bar in the first screen shot?

Bruce.

[Sandra]

Hello Bruce,

I would like inform you that the Series transparency property work in a global way and it controls as default the transparency of line and OutLine. The Outline transparency property is a local property that only controls OutLine transparency. We consider the properties work correctly; therefore the behaviour you are experiencing with both properties is correct.

Thanks in advance,

[Metman]

Hi Sandra

Thanks for this info which is what I expected the functionality was supposed to do.

All I can say it doesn't work that way for me with Delphi XE6, and what I think is the latest available version of TeeChart.

Do you have any demo programs that you have that show this functionality working?

I could then run the code and see if the problem disappears?

Bruce.

[Sandra]

Hello Bruce,

Thanks for the information. The problem you are experiencing occurs only when you work in GDI canvas instead of GDI+ We've added the problem in VCL TeeChart bugzilla tracker to fix it to upcoming versions of TeeChartVCL with number ID867. Feel Free to add your email account to the ticket so you can be automatically notified when and update arrives.
Meantime, if you want, you can use GDI+ canvas instead of GDI canvas to work without problems. Moreover, I have prepared for you an example, where Outline property of Series works fine in GDI+ Canvas. The example also contains the executable. Please send an email to info at steema dot com with your licensing details and a reference to this thread and we will send you the project.

Thanks in advance,