[bug 39159] chart title size is not preserved

Muso

Sr. Member
Posts: 356

[bug 39159] chart title size is not preserved

« on: July 05, 2021, 12:48:57 am »

I have set the chart title to size 12 in the IDE. When I run my program on a laptop with a higher DPI resolution, the title gets to small. When I open the *.lpi file on that laptop, I see that the title size is set to 8.

I understand that the form sizes must be adjusted according to the resolution but the font size must not be changed in my opinion because when I explicitly set the title size at runtime then it looks correct on different screens (laptops and monitors).

The question is if I maybe made a mistake. In the project options I set DPI awareness to true. Do I have to make a further setting to keep the title font size constant or is it a bug?

« Last Edit: July 05, 2021, 01:47:36 pm by Muso »

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wp

Hero Member
Posts: 11911

Re: chart title size is not preserved

« Reply #1 on: July 05, 2021, 10:55:55 am »

You are right: TAChart does not follow the rules of LCL scaling obeyed by other controls. The problem is that drawing on a monitor is only one possibility to output charts, there are other drawers for svg file, opengl, wmf file etc; charts even can be painted in a no-gui environment. Therefore, it is difficult to keep all these possibilities together. I am not saying that LCLScaling is not possible for screen output, but I do not want to address it now, immediately before the release of v2.2, since it will certainly introduce some bugs here and there.

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