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Old 01-02-2017, 14:58   #1
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OpenCPN scaling problems with high resolution displays

On my HP x360's QHD+ (32001800) display, tide icons are displayed too small to be usable.

Tools -> User Interface -> scaling settings have no effect.

OpenCPN 4.4.0 and 4.5.127 beta.

Windows 10 Home 64 bit, build 14393.693.

Attached screenshot is with an NOAA ENC chart, but the same occurs with NOAA RNC and CM93.

Thanks for any help,

--Paul
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Old 01-02-2017, 15:14   #2
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Re: OpenCPN scaling problems with high resolution displays

Also, tide graph dialogs are not displayed properly; this seems to be a scaling issue due to the high resolution (in my case QHD+ (32001800)) display.

I see that this problem has been previously pointed out by Patience242 FS#2104 : Tide & Current popup boxes too small with 4K display on Win10 and Tide & Current popup boxes too small with 4K display on Win10.

OpenCPN 4.4.0 and 4.5.127 beta; Windows 10 Home 64 bit, build 14393.693.

Thanks for any help,

--Paul
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Old 01-02-2017, 18:32   #3
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Re: OpenCPN scaling problems with high resolution displays

what is wrong with the dialog?

Would simply scaling the icons solve the problem?
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Old 01-02-2017, 21:44   #4
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Re: OpenCPN scaling problems with high resolution displays

Quote:
Originally Posted by boat_alexandra View Post
what is wrong with the dialog?
The PREV and NEXT buttons obscure the date legend. The CLOSE or CANCEL button is truncated. The time axis markings are partly obscured by the buttons. See the attached image in the post above.

Quote:
Would simply scaling the icons solve the problem?
That would solve the icon visibility problem, but the target for clicking and popping up the graph needs to be enlarged too. It's very hard to hit on this machine now.

Pixels are just too damn small on some of these new displays!

--Paul
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Old 09-02-2017, 12:58   #5
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Re: OpenCPN scaling problems with high resolution displays

OK, I've made some changes to the tide rectangle icon drawing code in chcanv.cpp so that they are scaled depending on screen resolution. Also added a TideRectangleScale setting in the config file, analogous to CurrentArrowScale, so users can modify the default scaling if it is not to their liking. Tested under Ubuntu 16.04 and Windows 10 and seems to work well.

What should I do to submit these changes to the project?

--Paul
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Old 10-02-2017, 19:53   #6
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Re: OpenCPN scaling problems with high resolution displays

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Originally Posted by _QB_ View Post
What should I do to submit these changes to the project?
The answer, courtesy Pavel:

Quote:
The best way to contribute to OpenCPN code is to fork the main repository from https://github.com/OpenCPN/OpenCPN, push your changes to your fork and create a pull request. There is a short guide to the whole process at https://guides.github.com/activities/forking/
Thanks!

--Paul
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