Hi,
this is my wishlist on some basic stuff: Zooming and Scrolling:
Zoom
1. Current Zoom rectangle painted using pmNotXor method, looks quite unpleasant on a grainy background. Frame Color is unpredictable on complex bitmap
background. Can we have selection rectangle, similar to standard Windows Explorer? It should have regular frame with pmCopy method, blended background
and a standard Windows selection color (clHighlight)?
2. Other problem is that Zoom Rectangle shows considerable flicker when zooming, especially on large screens, and when Pen.Width is large, and Brush.Style=bsSolid.
3. ZoomRectangle->Pen.Width limited only to 6 pixels max (probably due to considerable flicker discussed above). Can we increase this number to 10-20?
4. Default Zoom Frame PenMode is 'round', can we have default setting as 'flat' (especially for pen.Width>1)?
5. Default Zoom Buton is mbLeft, which is odd. It is custom in most packages nowadays to use left button for scrolling instead (e.g. Google maps).
6. Possibility of having custom ZoomingCursor
Scroll
1. Default Scroll with Right mouse is defective, scrolling stops when mouse leaves ChartRect. This is odd and unnecessary feature. For example Google
Maps can be dragged outside of the panel boundaries.
2. Standard behavior of the Left and Right mouse buttons in Windows is slightly different (Right mouse is slightly deficient, so that MouseUp event is not
fired outside of the Application Form). As a result, simple swapping Left and Right mouse buttons in TChart brakes functionality of the Chart Zoom and
Pan. For example, trying to Zoom with Right mouse outside the ChartRect freezes Zoom event. Wishlist: make Left and Right buttons equivalent, so that
one could swap Zooming/Panning buttons without penalty.
3. Chart onScrolled (end of Scroll) event does not exist. It is very important to have this event to be able synchronize/update chart when amount of
data points is large (so that updating onScrolling is not an option).
4. Possibility of having custom ScrollingCursor
Regards,
odissey1
TeeChart 2010 wishlist 2 (Zoom / Pan)
-
- Site Admin
- Posts: 14730
- Joined: Mon Jun 09, 2003 4:00 am
- Location: Banyoles, Catalonia
- Contact:
Re: TeeChart 2010 wishlist 2 (Zoom / Pan)
Hi odissey1,
Ok, I have added this to the wish-list to be considered for inclusion in future releases with id. number TV52014773.1. Current Zoom rectangle painted using pmNotXor method, looks quite unpleasant on a grainy background. Frame Color is unpredictable on complex bitmap
background. Can we have selection rectangle, similar to standard Windows Explorer? It should have regular frame with pmCopy method, blended background
and a standard Windows selection color (clHighlight)?
Ok, added those issue to the same item in the wish-list: TV52014774.2. Other problem is that Zoom Rectangle shows considerable flicker when zooming, especially on large screens, and when Pen.Width is large, and Brush.Style=bsSolid.
3. ZoomRectangle->Pen.Width limited only to 6 pixels max (probably due to considerable flicker discussed above). Can we increase this number to 10-20?
Both settings can be easily changed to fit your needs using TeeChart native template files, for example. Also, if you are a sourcecode customer you can modify TeeChart sources to fit your exact needs.4. Default Zoom Frame PenMode is 'round', can we have default setting as 'flat' (especially for pen.Width>1)?
5. Default Zoom Buton is mbLeft, which is odd. It is custom in most packages nowadays to use left button for scrolling instead (e.g. Google maps).
Could you please give us some more details of what you would expect from this feature?6. Possibility of having custom ZoomingCursor
Ok, added your suggestion to the list to be enhanced with ticket number TV52014775.1. Default Scroll with Right mouse is defective, scrolling stops when mouse leaves ChartRect. This is odd and unnecessary feature. For example Google
Maps can be dragged outside of the panel boundaries.
I'm not able to reproduce this one here. Can you please attach a simple example project we can run "as-is" to reproduce the problem here, describing the exact steps we should follow and let us know the TeeChart version you are using?2. Standard behavior of the Left and Right mouse buttons in Windows is slightly different (Right mouse is slightly deficient, so that MouseUp event is not
fired outside of the Application Form). As a result, simple swapping Left and Right mouse buttons in TChart brakes functionality of the Chart Zoom and
Pan. For example, trying to Zoom with Right mouse outside the ChartRect freezes Zoom event. Wishlist: make Left and Right buttons equivalent, so that
one could swap Zooming/Panning buttons without penalty.
Have you tried doing this with OnZoom event? Also you could enable a flag in OnZoom which enabled some code in the OnAfterDraw event. Does this help?3. Chart onScrolled (end of Scroll) event does not exist. It is very important to have this event to be able synchronize/update chart when amount of
data points is large (so that updating onScrolling is not an option).
Could you also give us some more details of what you would expect from this feature?4. Possibility of having custom ScrollingCursor
Best Regards,
Narcís Calvet / Development & Support Steema Software Avinguda Montilivi 33, 17003 Girona, Catalonia Tel: 34 972 218 797 http://www.steema.com |
![]() ![]() ![]() ![]() ![]() ![]() |
Instructions - How to post in this forum |
Re: TeeChart 2010 wishlist 2 (Zoom / Pan)
Hi Narcis,
Please find attached demo with new class TAlphaBlendZoom, which I drafted for myself some time ago. It covers all wishlist items I mentioned above.
Included class TAlphaBlendZoom replaces original Zoom procedure in TeeChart, and slightly patches Pan.
Demo shows:
1. make Zoom alpha-blended
2. add onScrolled event
3. make Left mouse and Right mouse buttons interchangeable.
4. shows patch to Chart.pas 'MouseMove' procedure to allow unlimited mouse dragging
5. Introduces properties ZoomingCursor and PanningCursor (cursors to show while Zooming/panning)
Regards,
odissey1
(due to 500kB upload limit, EXE file uploaded separately below)
Please find attached demo with new class TAlphaBlendZoom, which I drafted for myself some time ago. It covers all wishlist items I mentioned above.
Included class TAlphaBlendZoom replaces original Zoom procedure in TeeChart, and slightly patches Pan.
Demo shows:
1. make Zoom alpha-blended
2. add onScrolled event
3. make Left mouse and Right mouse buttons interchangeable.
4. shows patch to Chart.pas 'MouseMove' procedure to allow unlimited mouse dragging
5. Introduces properties ZoomingCursor and PanningCursor (cursors to show while Zooming/panning)
Regards,
odissey1
(due to 500kB upload limit, EXE file uploaded separately below)
- Attachments
-
- AlphaBlend_no_EXE.zip
- Alpha blended zoom demo (no EXE)
- (10.43 KiB) Downloaded 2132 times
AlphaBlendedZoom (full demo)
Full demo project
- Attachments
-
- AlphaBlend_06p1.part1.rar
- This is part1 of the archived AlphaBlend zoom demo
- (488.28 KiB) Downloaded 2290 times
AlphaBlendZoom (full demo)
Full demo project
- Attachments
-
- AlphaBlend_06p1.part2.rar
- This is part2 of the archived AlphaBlend zoom demo
- (267.96 KiB) Downloaded 2203 times
-
- Site Admin
- Posts: 14730
- Joined: Mon Jun 09, 2003 4:00 am
- Location: Banyoles, Catalonia
- Contact:
Re: TeeChart 2010 wishlist 2 (Zoom / Pan)
Hi odissey1,
Thank you very much for your feedback. Steema office's will be closed from tomorrow until next Monday, both included, due to Easter holidays. We will check out your project and get back to you next week.
Have a nice weekend![Exclamation :!:](./images/smilies/icon_exclaim.gif)
Thank you very much for your feedback. Steema office's will be closed from tomorrow until next Monday, both included, due to Easter holidays. We will check out your project and get back to you next week.
Have a nice weekend
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
Best Regards,
Narcís Calvet / Development & Support Steema Software Avinguda Montilivi 33, 17003 Girona, Catalonia Tel: 34 972 218 797 http://www.steema.com |
![]() ![]() ![]() ![]() ![]() ![]() |
Instructions - How to post in this forum |
Re: TeeChart 2010 wishlist 2 (Zoom / Pan)
Hi Narcis,
Have a happy holiday!
odissey1
Have a happy holiday!
odissey1
-
- Site Admin
- Posts: 14730
- Joined: Mon Jun 09, 2003 4:00 am
- Location: Banyoles, Catalonia
- Contact:
Re: TeeChart 2010 wishlist 2 (Zoom / Pan)
Hi odissey1,
Thanks, I did! Hope you had a good time too.
Thanks for the example project too. I've added it to the wish-list to be reviewed and investigated for future releases.
Thanks, I did! Hope you had a good time too.
Thanks for the example project too. I've added it to the wish-list to be reviewed and investigated for future releases.
Best Regards,
Narcís Calvet / Development & Support Steema Software Avinguda Montilivi 33, 17003 Girona, Catalonia Tel: 34 972 218 797 http://www.steema.com |
![]() ![]() ![]() ![]() ![]() ![]() |
Instructions - How to post in this forum |