Icons for HiDPI screens (sharp vs. blurred)

[Friedrich Beckmann]

Hi,

starting with this commit

http://git.savannah.gnu.org/cgit/pspp.git/commit/?id=105d9f01f4f93cf9ff26ad9f6d8924ed69f79689

and the following four commits I have modified the icon setup to avoid the blurred icons which are shown on Debian and on MacOS. The setup works for the normal DPI and the HiDPI settings (Settings -> Display -> Scale (200%)) on Linux.

Here is a screenshot of the original icon setup from MacOS with gtk/quartz:

You see that the icons in the toolbar are blurred except the „Find“ icon. The find icon is taken from the Adwaita icon theme - all others are our icons.

Here is the new icon setup:

Not blurred.

This is from a Macbook Pro with Retina display at 2560x1600 pixels. I did not expect that the HiDPI setting in Linux would work so nicely. Here is a screenshot of the new setup in HiDPI on debian (via vmware on Mac).

With the new setup the icons are derived from one svg, except when there is a size dependent layout with more and less details. I found the size dependent layouts for the mimetype icons but all other icons seem to be simply scaled.

Fritz