[Linux] Get rid of custom key theme and replace it with gtk.css

dotfiles/config/gtk-3.0/gtk.css

@@ -0,0 +1,91 @@
+@binding-set gtk-emacs-text-entry
+{
+  bind "<ctrl>b" { "move-cursor" (logical-positions, -1, 0) };
+  bind "<shift><ctrl>b" { "move-cursor" (logical-positions, -1, 1) };
+  bind "<ctrl>f" { "move-cursor" (logical-positions, 1, 0) };
+  bind "<shift><ctrl>f" { "move-cursor" (logical-positions, 1, 1) };
+
+  bind "<alt>b" { "move-cursor" (words, -1, 0) };
+  bind "<shift><alt>b" { "move-cursor" (words, -1, 1) };
+  bind "<alt>f" { "move-cursor" (words, 1, 0) };
+  bind "<shift><alt>f" { "move-cursor" (words, 1, 1) };
+
+  bind "<ctrl>a" { "move-cursor" (paragraph-ends, -1, 0) };
+  bind "<shift><ctrl>a" { "move-cursor" (paragraph-ends, -1, 1) };
+  bind "<ctrl>e" { "move-cursor" (paragraph-ends, 1, 0) };
+  bind "<shift><ctrl>e" { "move-cursor" (paragraph-ends, 1, 1) };
+
+  bind "<ctrl>w" { "cut-clipboard" () };
+  bind "<ctrl>y" { "paste-clipboard" () };
+
+  bind "<ctrl>d" { "delete-from-cursor" (chars, 1) };
+  bind "<alt>d" { "delete-from-cursor" (word-ends, 1) };
+  bind "<alt>BackSpace" { "delete-from-cursor" (word-ends, -1) };
+  bind "<alt>backspace" { "delete-from-cursor" (word-ends, -1) };
+  bind "<ctrl>k" { "delete-from-cursor" (paragraph-ends, 1) };
+  bind "<alt>backslash" { "delete-from-cursor" (whitespace, 1) };
+
+  bind "<alt>space" { "delete-from-cursor" (whitespace, 1)
+                      "insert-at-cursor" (" ") };
+  bind "<alt>KP_Space" { "delete-from-cursor" (whitespace, 1)
+                         "insert-at-cursor" (" ")  };
+  /*
+   * Some non-Emacs keybindings people are attached to
+   */
+  bind "<ctrl>u" { "move-cursor" (paragraph-ends, -1, 0)
+                   "delete-from-cursor" (paragraph-ends, 1) };
+
+  bind "<ctrl>h" { "delete-from-cursor" (chars, -1) };
+  bind "<ctrl>w" { "delete-from-cursor" (word-ends, -1) };
+}
+
+/*
+ * Bindings for GtkTextView
+ */
+@binding-set gtk-emacs-text-view
+{
+  bind "<ctrl>p" { "move-cursor" (display-lines, -1, 0) };
+  bind "<shift><ctrl>p" { "move-cursor" (display-lines, -1, 1) };
+  bind "<ctrl>n" { "move-cursor" (display-lines, 1, 0) };
+  bind "<shift><ctrl>n" { "move-cursor" (display-lines, 1, 1) };
+
+  bind "<ctrl>space" { "set-anchor" () };
+  bind "<ctrl>KP_Space" { "set-anchor" () };
+}
+
+/*
+ * Bindings for GtkTreeView
+ */
+@binding-set gtk-emacs-tree-view
+{
+  bind "<ctrl>s" { "start-interactive-search" () };
+  bind "<ctrl>f" { "move-cursor" (logical-positions, 1) };
+  bind "<ctrl>b" { "move-cursor" (logical-positions, -1) };
+}
+
+/*
+ * Bindings for menus
+ */
+@binding-set gtk-emacs-menu
+{
+  bind "<ctrl>n" { "move-current" (next) };
+  bind "<ctrl>p" { "move-current" (prev) };
+  bind "<ctrl>f" { "move-current" (child) };
+  bind "<ctrl>b" { "move-current" (parent) };
+}
+
+entry {
+  -gtk-key-bindings: gtk-emacs-text-entry;
+}
+
+textview {
+  -gtk-key-bindings: gtk-emacs-text-entry, gtk-emacs-text-view;
+}
+
+treeview {
+  -gtk-key-bindings: gtk-emacs-tree-view;
+}
+
+GtkMenuShell {
+  -gtk-key-bindings: gtk-emacs-menu;
+}

dotfiles/config/gtk-3.0/settings.ini

@@ -1,11 +1,11 @@
 [Settings]
-gtk-key-theme-name=MyEmacs
+gtk-key-theme-name=Emacs
 gtk-application-prefer-dark-theme=false
-gtk-theme-name=Adwaita-dark
+gtk-theme-name=Arc
 gtk-fallback-icon-theme=gnome
-gtk-icon-theme-name=Paper
+gtk-icon-theme-name=Numix-Circle
 gtk-font-name=Roboto 11
-gtk-cursor-theme-name=Paper
+gtk-cursor-theme-name=Breeze_Snow
 gtk-cursor-theme-size=0
 gtk-toolbar-style=GTK_TOOLBAR_BOTH
 gtk-toolbar-icon-size=GTK_ICON_SIZE_LARGE_TOOLBAR
@@ -15,5 +15,5 @@ gtk-enable-event-sounds=1
 gtk-enable-input-feedback-sounds=1
 gtk-xft-antialias=1
 gtk-xft-hinting=1
-gtk-xft-hintstyle=hintfull
+gtk-xft-hintstyle=hintslight
 gtk-xft-rgba=rgb