High DPI issue

[ZeroDot1]

The surface is very large, and a part of the window to fill the entire screen

Log:
$ '/home/user/Downloads/MellowPlayer-develop/src/MellowPlayer'qt5ct: using qt5ct plugin
[I] [2017-07-12 22-42-15:012707] [main] Log directory: /home/user/.local/share/MellowPlayer/MellowPlayer/Logs/
[I] [2017-07-12 22-42-15:012792] [main] MellowPlayer 2.95.0.0 - Built on Jul 12 2017 at 19:35:47 (GCC 7.1.1 20170621, 64 bit) with Qt 5.9.1
[W] [2017-07-12 22-42-15:267146] [qt] : QML QQuickAnchors: Binding loop detected for property "rightMargin"
[W] [2017-07-12 22-42-15:631883] [Mpris] failed to register service on the session bus: org.mpris.MediaPlayer2.MellowPlayer
[W] [2017-07-12 22-42-15:631941] [Mpris] failed to register object on the session bus: /org/mpris/MediaPla

Download: https://github.com/ColinDuquesnoy/MellowPlayer/files/1142917/src.zip
src.zip

Screenshot: https://user-images.githubusercontent.com/28985171/28132795-2bd1adee-673e-11e7-96ba-394327923791.png

[ColinDuquesnoy]

What is the resolution of your screen?

[ColinDuquesnoy]

The minimum size of the windows is set to 1280x720. If your screen resolution is greater or equal to 1280x720 your window should resize properly so I would suspect a bug with High DPI scaling. If that's the case, maybe try to comment this line (https://github.com/ColinDuquesnoy/MellowPlayer/blob/develop/src/main.cpp#L27) and report back.

[ZeroDot1]

$ xdpyinfo | grep dimensions
dimensions: 1920x1080 pixels (508x285 millimeters)
$ xdpyinfo | grep dots
resolution: 96x96 dots per inch

[ZeroDot1]

The problem only occurs when you use an FullHD monitor
On the regular screen of the notebook does not occur the problem

Notebookscreen:
$ xdpyinfo | grep dots
resolution: 96x96 dots per inch
$ xdpyinfo | grep dimensions
dimensions: 1600x900 pixels (423x238 millimeters)

[ColinDuquesnoy]

Did you try to comment line 27 in src/main.cpp (QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);). Did that make any differences?

Normally Qt should handle FullHD monitors just fine (I have one and I don't have any issues). Can you also try with other Qt/QML applications with that setup and the AppImage too?

[ZeroDot1]

It is working

:: https://vicrucann.github.io/tutorials/osg-qt-high-dpi/

[ZeroDot1]

Download:
src.zip