Lowres application icon on window switching (alt-tab)

Question

I manually downloaded and installed Sublime Text 2 (instead of adding the repository and installing via apt-get install) and I'm having some trouble getting gnome to find the high res icons for sublime.

I extracted the application to /usr/lib/sublime-text Added the following executable script as /usr/bin/sublime

#!/bin/sh
export SUBLIME_HOME="/usr/lib/sublime-text"
$SUBLIME_HOME/sublime_text $*

The /usr/lib/sublime-text/Icon directory contains icons for various resolutions in subdirectories (16x16, 32x32, 48x48, 128x128, 256x256), and I used the 256x256 one when I added the menu item to the cinnamon menu.

How does Gnome locate the icon for an application? I renamed the /etc/lib/sublime-text/Icon directory and then I didn't get an icon at all (default gnome icon) so

Gnome's obviously using an icon from the /usr/lib/sublime-text folder, but if so why how do I get it to use a highres one? Also how does Gnome match the application to the image name? Currently the script in /usr/bin is named sublime, the directory in /usr/lib is named sublime-text, the executable in /usr/bin/lib/sublime-text is named sublime_text and the menu item is defined in a file named Sublime Text.desktop.

I seriously don't understand how the system manages to match all of this...

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I'm running Linux Mint 13 (Cinnamon)

Answer 1

While this isn't the best solution, I get around the problem of low resolution icons by just pointing directly to the highest possible version inside the .desktop file. In this case specifically, I have it pointing to a local copy of the official 256px icon, but any location should work.

Icon=/home/patrick/.icons/sublime-256.png

Answer 2

I copied the Sublime icons over to the various directories /usr/share/icons/hicolor/[NxN]/apps

Then I made a sublime.desktop file and put it under ~/.local/share/applications, with Icon=sublime_text.

That seemed to work.