Timezone selection screen

[kernc]

This commit introduces the following changes:

• everything related to timezones is in a separate timezones.py module,
• the timezone-coordinate-to-pixel-function has been severely simplified (watch and learn),
• hence some cc.png colors may have "moved" or had been inconsistent already before — this was also fixed,
• fixed the bug when timezone map-click selection doesn't work correctly on installer window being full screen or resized,
• the timezone screen now shows a timezone-dependent current local time the user can confirm being equal to what they expect,
• the timezone selection combobox has been replaced with a multi-level menu which is a bit easier to preview and less to scroll,
• the radio-style dot.png has been replaced with a red cross,
• the elevation map on the timezone screen has been replaced with a satellite image,
• added was a superposed daylight overlay showing daytime and nighttime places in the world.

Let me know what you think.

[corbin-auriti]

instead of a salelight image or hight map, could you match the Ubuquity timezone image for consistancy? http://www.blackviper.com/images/Articles/OS/Install_Ubuntu_9_10/images/Install_Ubuntu_9_10_04_png.jpg

[kernc]

could I or would I? :smiley: is this a consensus? I wasn't actually trying to match ubiquity in any way and I consider, with exception of time displayed right on the map (done) and more up-to-date timezone bands (looking into it), my additions far superior. :stuck_out_tongue:

[kernc]

Ok, I moved the current time label next to the "dot" pointer, which is no longer a red cross (our map is not a treasure map!) but instead one of the standard map pins everybody is used to. I did investigate how ubiquity does it, and it so happens that for Gtk variant, it uses Gnome's Timezone selection which faces all the same challenges of out-of-date timezone overlays. (FWIW, I've checked the UTC+0..10 and they are equally wrong in places as those we have now.) Once live-installer sets to use gi.repository or as long as they use the same bg map and, assuming, update those overlays, we can rely on those, but for the time being, the calculated time is perfectly correct, the timezone map looks good, and I would consider this branch feature complete.

[kernc]

Ok, one issue I noticed with LMDE201404 Mate with default Mint-X theme. The GtkEventBox holding the current time label is not black as is set but has some white to black gradient instead. The problem seems to be in /usr/share/themes/Mint-X/gtk-2.0/gtkrc, line 273: widget_class "*<GtkNotebook>*<GtkEventBox>" style "notebook-fix". I don't know how crucial the line is or what it was supposed to "fix," but with this line commented out, everything looks correct (great) as does with any other theme. :smiley:

[monsta]

The theme issue seems to be fixed in https://github.com/linuxmint/mint-themes/commit/640f8ed15e2b7521dda5d13d19944f731cf06af9#diff-216 (warning, the commit is huge). No more "notebook-fix" entries anywhere. LMDE currently uses quite an old version of Mint-X theme.