Rumor has it that Eclipse supports high resolution screens with scaling active. Right now my Eclipse shows icons on my 3840 x 2160 monitor in 16 x 16 pixel, which is not usable.
I debugged the code and found that DPIUtil.setDeviceZoom(int) uses some fixed value for nativeDeviceZoom, and so always calculates 100 for deviceZoom (which is then used to scale images). The culprit seems to be the following line (#439):
deviceZoom = Math.max ((nativeDeviceZoom + 25) / 100 * 100, 100);
However by setting the SWT_AUTOSCALE property I can get around this, and then I'm able to see the Eclipse application with nicely auto-scaled icons.
The bigger problem is that when the scaling is 200, 150 or 100, nativeDeviceZoom is always 150, which means deviceZoom is always 100.
I have no idea what any of these methods are supposed to represent, and the calculation does not make any sense to me.
Still there must be something I can do to get it to work. What is it?
Edit: After restarting twice Eclipse and our application suddenly started to scale. Now, after restarting again, we are back to not scaling at all.
