Icons tweaked #4469

- The "light" icon theme is now a little lighter, to increase contrast.
- Toolbox icons are now small.
- Buttons:
  - Buttons without labels which use icons as their only source of info regarding what the button does (e.g. the white-balance pipette button) use normal-sized icons.
  - Labeled buttons which use icons as an auxiliary source of information (e.g. Auto-Crop) now use small icons. Curve type icons are also small even though they have no labels.
- Colored circles are smaller.
- Curve type icons redesigned and small.
- Hand icons (when panning the preview) redesigned to have a clear outline regardless of background color.
- Magnifier icons redesigned to have a thinner magnifier frame and larger inner parts.
- Perspective, distortion and crop icons redesigned.
- Some small icons were missing the `-small` suffix, now renamed.

rtgui/filebrowser.cc

@@ -203,8 +203,8 @@ FileBrowser::FileBrowser () :
      ***********************/
 
     // Same image arrays in filecatalog.cc
-    std::array<std::string, 6> clabelActiveIcons = {"circle-empty-gray.png", "circle-red.png", "circle-yellow.png", "circle-green.png", "circle-blue.png", "circle-purple.png"};
-    std::array<std::string, 6> clabelInactiveIcons = {"circle-empty-darkgray.png", "circle-empty-red.png", "circle-empty-yellow.png", "circle-empty-green.png", "circle-empty-blue.png", "circle-empty-purple.png"};
+    std::array<std::string, 6> clabelActiveIcons = {"circle-empty-gray-small.png", "circle-red-small.png", "circle-yellow-small.png", "circle-green-small.png", "circle-blue-small.png", "circle-purple-small.png"};
+    std::array<std::string, 6> clabelInactiveIcons = {"circle-empty-darkgray-small.png", "circle-empty-red-small.png", "circle-empty-yellow-small.png", "circle-empty-green-small.png", "circle-empty-blue-small.png", "circle-empty-purple-small.png"};
 
     if (options.menuGroupLabel) {
         pmenu->attach (*Gtk::manage(menuLabel = new Gtk::MenuItem (M("FILEBROWSER_POPUPCOLORLABEL"))), 0, 1, p, p + 1);