Polybar had issues when there is no background set or set by a tool like imagemagick which doesn't add the root pixmap to the root window properties.
There's not much we can do about it, but at least polybar doesn't crash anymore.
Fixes#1582Fixes#1585
* fix(tray_manager): only enable transparency if neccessary
Previously, we always enabled transparency
* fix(background_manager): avoid needless fetching
* fix(renderer): move logging message to correct place
* fix(background_manager): handle dummy pixmap (_XSETROOT_ID) right
* fix(background_manager): more initialization + don't free on error
Freeing on error is incorrect, since we could still be called again later in
which case we still need the resources.
* fix(background_manager): add more infos to trace logs
* fix(background): correct typo (XROOTMAP -> XROOTPMAP)
* fix(background_manager): do not report "no background" as error
* style(background_manager): use braces for if
Co-Authored-By: bennofs <benno.fuenfstueck@gmail.com>
* fix(background_manager): better error message for dummy pixmap
Co-Authored-By: bennofs <benno.fuenfstueck@gmail.com>
* style(background): some more style fixes
* fix(connection): initialize pixmap in all cases in root_pixmap()
* style(connection): improve readability using early return
