Search found 60 matches

by jens.mertelmeyer
Tue Nov 18, 2014 10:22 am
Forum: VCL
Topic: TScrollpagerTool - Can I delay repainting of the main chart?
Replies: 4
Views: 1148

Re: TScrollpagerTool - Can I delay repainting of the main chart?

Yes, I also thought of that. But I'm lazy. Why would I do that if I can also lean back, just use a TScrollpagerTool and let TeeChart do the work? :D

I probably should rather investigate the performance issue for this chart than trying to make it less obvious. Thanks for your help, as always.
by jens.mertelmeyer
Mon Nov 17, 2014 11:02 am
Forum: VCL
Topic: TScrollpagerTool - Can I delay repainting of the main chart?
Replies: 4
Views: 1148

TScrollpagerTool - Can I delay repainting of the main chart?

I have a fancy looking long-term trend with a TScrollpagerTool. On slower machines, scrolling around is not quite smooth. Because of that, I'd like to block auto-repainting the main chart until the mousebutton is released.

Is that possible?
by jens.mertelmeyer
Mon Nov 17, 2014 9:43 am
Forum: VCL
Topic: Selecting an area of a TPolarSeries?
Replies: 9
Views: 2623

Re: Selecting an area of a TPolarSeries?

It does indeed look flawless. I should have put more emphasis on the " and moving the bits around ": I'm a but clueless how to implement rotating the red selection pie around. Or even make it grow or shrink (greater/smaller angle selection). It could easily be done by using additional components lik...
by jens.mertelmeyer
Fri Nov 14, 2014 12:02 pm
Forum: VCL
Topic: Selecting an area of a TPolarSeries?
Replies: 9
Views: 2623

Selecting an area of a TPolarSeries?

Imagine a user wants to select a certain range on a TLineSeries. With a TColorBandTool, it's easy to implement and easy to make look good ( like this ). Now what if we also have a polar series? The axis tools (like TColorLineTool or TColorBandTool) don't seem to work here. I fully understand that a ...
by jens.mertelmeyer
Tue Nov 04, 2014 4:53 pm
Forum: VCL
Topic: Bug with TLegendPalette?
Replies: 18
Views: 5429

Re: Bug with TLegendPalette?

If I add a Chart1.SeriesList.FillSampleValues(); to the OnFormCreate-event, it quickly produces an access violation at runtime. Win32, VCL, XE7. Here is my callstack: 2014.12.140923 Win32 VCL :007415bc SortCells + $38 :00741854 DrawAllSorted + $B0 :00741b8a TSurfaceSeries.DrawAllValues + $152 :0074c...
by jens.mertelmeyer
Tue Nov 04, 2014 9:40 am
Forum: VCL
Topic: OpenGL initialization performance
Replies: 6
Views: 1612

Re: OpenGL initialization performance

Thanks for the Benchmark. But please note that both of us were perfectly fine with the OpenGL initialization taking a bit of time. Our main gripe was the fact the main thread is blocked. If it really has to be the main thread, please give us a way to do it in advance. When, for example, the TChart i...
by jens.mertelmeyer
Tue Oct 28, 2014 4:37 pm
Forum: VCL
Topic: Generally disable the new "hover" effect of 2014.12
Replies: 18
Views: 4935

Re: Generally disable the new "hover" effect of 2014.12

And making this property public means users should still set it for each chart. No, why? Take the example you posted. Replace the hardcoded "False" with a public class variable "HoverGloballyEnabled". Done. This way, annoying persons like me just need to set a single variable once. They now have th...
by jens.mertelmeyer
Tue Oct 28, 2014 12:16 pm
Forum: VCL
Topic: Suggestion: Make dragging a TColorLine easier for touch
Replies: 2
Views: 745

Suggestion: Make dragging a TColorLine easier for touch

You can do a lot of cool stuff with a TColorBandTool. Drag it around, resize it, whatever. As long as you have a mouse it works flawlessly. TColorBand_Cursor.png Now what if we have a touchscreen? You can still move the selection around easily, but the start and end lines (which are TColorLineTools)...
by jens.mertelmeyer
Tue Oct 28, 2014 9:38 am
Forum: VCL
Topic: Generally disable the new "hover" effect of 2014.12
Replies: 18
Views: 4935

Re: Generally disable the new "hover" effect of 2014.12

I probably made it sound too complicated. I see there are already some "global" variables that seem very similar: TeEngine.TeeAxisClickCap: Integer , for example. It " Determines the amount in pixels that is allowed when clicking near an Axis to trigger selection of the axis." I am now asking for so...
by jens.mertelmeyer
Mon Oct 27, 2014 6:35 pm
Forum: VCL
Topic: Generally disable the new "hover" effect of 2014.12
Replies: 18
Views: 4935

Re: Generally disable the new "hover" effect of 2014.12

We can't consider this as a bug to be fixed. It's a new feature important enough to be enabled by default. Although I can understand, I'm still not happy the way it is now. I will have to write code which targets the exact release of 2014.12- For every existing project in the company. For every cha...
by jens.mertelmeyer
Mon Oct 27, 2014 3:53 pm
Forum: VCL
Topic: OpenGL initialization performance
Replies: 6
Views: 1612

Re: OpenGL initialization performance

I also wondered the same. It's really taking a lot of time.
In case it has to be the main thread, is it possible to do it in advance? I'd like to do it when my application starts up. For now, it seems to be delayed until the chart becomes visible.
by jens.mertelmeyer
Fri Oct 17, 2014 12:11 pm
Forum: Beta versions
Topic: New beta private community at Google+
Replies: 2
Views: 8804

Re: New beta private community at Google+

Careful, rant ahead. Steema, why do you always bind yourself to external services like Twitter, Google and whatever? There isn't even an official mail-powered newsletter. Instead, I will have to sign up to Twitter or Facebook to keep up to date (ok, in this case there's also an RSS feed). Now I wil...
by jens.mertelmeyer
Tue Oct 14, 2014 11:22 am
Forum: VCL
Topic: Question about files path
Replies: 3
Views: 731

Re: Question about files path

I also wondered how to do that. I either did something terribly wrong, or adding the source folder isn't going to help you since the PAS files are not prefixed with stuff like "VCLTee" and the IDE isn't going to find them.