Also allow custom icon themes

docs/source/int_customise.rst

@@ -52,14 +52,16 @@ modify it as you like.
   `novelwriter/assets/syntax <https://github.com/vkbo/novelWriter/tree/main/novelwriter/assets/syntax>`_.
 * The existing GUI themes are stored in
   `novelwriter/assets/themes <https://github.com/vkbo/novelWriter/tree/main/novelwriter/assets/themes>`_.
+* The existing icon themes are stored in
+  `novelwriter/assets/icons <https://github.com/vkbo/novelWriter/tree/main/novelwriter/assets/icons>`_.
 
 Remember to also change the name of your theme by modifying the ``name`` setting at the top of the
 file, otherwise you may not be able to distinguish them in :guilabel:`Preferences`.
 
 For novelWriter to be able to locate the custom theme files, you must copy them to the
 :ref:`a_locations_data` location in your home or user area. There should be a folder there named
-``syntax`` for syntax themes and just ``themes`` for GUI themes. These folders are created the
-first time you start novelWriter.
+``syntax`` for syntax themes, just ``themes`` for GUI themes, and ``icons`` for icon themes. These
+folders are created the first time you start novelWriter.
 
 Once the files are copied there, they should show up in :guilabel:`Preferences` with the label you
 set as ``name`` inside the file.
@@ -70,8 +72,8 @@ set as ``name`` inside the file.
    theme colour scheme.
 
 
-Gustom GUI Theme
-----------------
+Gustom GUI and Icons Theme
+--------------------------
 
 A GUI theme conf file consists of the follwing settings:
 
@@ -109,8 +111,9 @@ A GUI theme conf file consists of the follwing settings:
    statusunsaved   = 100, 100, 100
 
 In the Main section you must at least define the ``name`` and ``icontheme`` settings. The
-``icontheme`` settings should correspond to one of the internal icon themes. Either
-``typicons_light`` or ``typicons_dark``.
+``icontheme`` settings should correspond to one of the internal icon themes, either
+``typicons_light`` or ``typicons_dark``, or to an icon theme in your custom icons directory. The
+setting must match the icon theme's folder name.
 
 The Palette values correspond the the Qt enum values for QPalette::ColorRole, see the
 `Qt documentation <https://doc.qt.io/qt-5.15/qpalette.html#ColorRole-enum>`_ for more details. The

novelwriter/config.py

@@ -461,10 +461,11 @@ class Config:
         self._confPath.mkdir(exist_ok=True)
         self._dataPath.mkdir(exist_ok=True)
 
-        # Also create the syntax and themes folders if possible
+        # Also create the syntax, themes and icons folders if possible
         if self._dataPath.is_dir():
             (self._dataPath / "syntax").mkdir(exist_ok=True)
             (self._dataPath / "themes").mkdir(exist_ok=True)
+            (self._dataPath / "icons").mkdir(exist_ok=True)
 
         # Check if config file exists, and load it. If not, we save defaults
         if (self._confPath / nwFiles.CONF_FILE).is_file():

novelwriter/gui/theme.py

@@ -507,8 +507,10 @@ class GuiIcons:
         self._themeMap = {}
         themePath = self._iconPath / iconTheme
         if not themePath.is_dir():
-            logger.warning("No icons loaded for '%s'", iconTheme)
-            return False
+            themePath = self.mainConf.dataPath("icons") / iconTheme
+            if not themePath.is_dir():
+                logger.warning("No icons loaded for '%s'", iconTheme)
+                return False
 
         themeConf = themePath / self._confName
         logger.info("Loading icon theme '%s'", iconTheme)

tests/test_gui/test_gui_theme.py

@@ -282,7 +282,6 @@ def testGuiTheme_Icons(qtbot, caplog, monkeypatch, nwGUI, fncPath):
     # Load a broken theme file
     iconsDir = fncPath / "icons"
     testIcons = iconsDir / "testicons"
-    iconsDir.mkdir()
     testIcons.mkdir()
     writeFile(testIcons / "icons.conf", (
         "[Main]\n"