globalScaleProperty

When using high DPI devices (dots per inch), the scene needs to be scaled, otherwise all the controls will be too small to be usable. In this case, coordinates used in Node and Scene aren't pixels. Instead, 1 logical unit is 1 physical pixel on a low DPI device, but is globalScale physical pixels on a high DPI device.

This property can be set manually, allowing your entire application to be scaled by any amount (which may be useful for the visually impaired). When an application is started, globalScale is based on the first of these :

1. The value of the environment variable GDK_SCALE

2. The value of the environment variable QT_SCALE_FACTOR

3. A guess is made based on the size in pixels of the display. Anything over 2000 pixels wide, globalScale is set to : round(SCREEN_WIDTH / 2000)

Unless stated otherwise, glok uses LogicalPixels. If the documentation uses the word pixels only, that's just a short-cut LogicalPixels.

NOTE. When using high DPI monitors, expect mouse events with non-integer values!