File open dialog size larger than screen resolution #73451
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Reference: blender/blender#73451
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System Information
Operating system: Windows-10-10.0.17134-SP0 64 Bits
Graphics card: GeForce RTX 2080 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.67
Blender Version
Broken: version: 2.83 (sub 1), branch: master, commit date: 2020-01-23 15:59, hash:
6fff73e3f0
Worked: 2.80 and before
Short description of error
The file open dialog opens with a larger size than the resolution of the monitor it is on. I am using an external monitor with a larger resolution (4K) than my laptop. Now I run Blender on the larger monitor. It then opens the file open dialog on the smaller laptop screen, but makes the window as big as though it was on the larger monitor.
This is bad, as important parts of the window are not visible, like the options on the right, the file name at the bottom, the OK and Cancel buttons. You then have to manually rescale it. Now this is even more annoying due to the fact that Blender does not remember the last size and location of the window, so every time it opens it like this.
The problem seems to be, that Blender opens the dialog on your "main" display, but calculates the size of the window based on the size of the parent Blender window.
Exact steps for others to reproduce the error
Added subscriber: @ZsoltStefan
#81314 was marked as duplicate of this issue
Added subscriber: @JulianEisel
Added subscriber: @ChristopherAnderssarian
Changed status from 'Needs Triage' to: 'Confirmed'
This might not be a simple issue to solve (but there's also hope for a simple fix).
On one side because monitors with different DPIs are at play, which is always finicky. AFAIK we use the main monitor to clamp windows. So if your 4K monitor is the main window, that would explain this.
Another thing that might happen is that, if the window opens on a different monitor than the current Blender window, it may use the DPI hint of that window. If that is the issue, we could clamp the window size of the new window after it has been created (by sending a resize request). Then we have an updated DPI hint for this window.
The OS window-manager should generally prevent such large windows, although I'm afraid we can't rely on that.
Actually it should remember the size, at least it's supposed to. If it still opens at a bigger size than it was set to on last usage, that's again a hint towards DPI issues.
Will mark this as bug for now, although it's really close to being a known issue, not a bug.
I don't know when I'll find the time to investigate this properly. If somebody else has access to such a setup, you're welcome to check ;)
I played around with the file open window on both monitors and at different scale factors (Is that what you mean with DPI?).
I then set the 4K display as "main" in Windows. Then everything worked the other way around:
So it seems that it doesn't matter on which monitor you have your Blender window open, the file open window always opens on the "main" display. If this happens to be another display, than the window size gets reset. And the size it gets reset to depends on the DPI of the display of the parent Blender window, not the display it opens on.
Added subscribers: @kittrick, @iss
This has been fixed for quite a while now. The File Browser will open on the same monitor as the main window, not just on the main monitor as before.