High DPI: Coordinate conversion under multi-screen

There are two screens under wayland, the zoom factor is 1.25, and the window is displayed on the second screen, as shown below:

Maindow is displayed on the second screen, we want to get the geometry

  gemoetry.x  = ( topleft - 1920) * 1.25 + 1920

But the topleft of the window under wayland is always 0,0. So no matter where the window is, gemoetry.x = ( 0 - 1920) * 1.25 + 1920 = 384

At the moment QCursor::pos() will also get the wrong result.

The location of the menu also shows an error.