make prototype using theme files handle fonts better

Author: MyreMylar

docs/source/theme_guide.rst

@@ -413,7 +413,10 @@ of our UI theme.
 Prototype theme blocks must be defined higher in the theme file than where they are used, otherwise they won't exist to
 be imported.
 
-Here's a quick example:
+If you are using multiple locale specifiers in font blocks, you will need to specify these in every font block in your
+prototype hierarchy so that the theme loading can determine which locale's font to apply the theming to.
+
+Here's a quick example of using a simple prototype:
 
 .. code-block:: json
    :caption: theme.json

docs/source/theme_reference/theme_button.rst

@@ -52,7 +52,7 @@ Font
 block has these parameters:
 
  - "**name**" - Necessary to make a valid block. This is the name that this font goes by in the UI, if this is a new font then subsequent font instances with different styles or sizes should use the same name.
- - "**locale**" - Optional parameter to set this font as belonging to a particular locale only. See the :ref:`localization` guide.
+ - "**locale**" - Optional parameter to set this font as belonging to a particular locale only. See the :ref:`localization` guide. You will need to keep repeating the locale specifier if using prototypes to make a hierarchy.
  - "**size**" - Necessary to make a valid block. This is the point size of the font to use on the button.
  - "**bold**" - Optional parameter. Set it to "1" to make this font bold.
  - "**italic**" - Optional parameter. Set it to "1" to make this font italic.

docs/source/theme_reference/theme_label.rst

@@ -27,6 +27,7 @@ Font
 :class:`UILabel <pygame_gui.elements.UILabel>` accepts a font specified in the theme via a 'font' block. A 'font' block has these parameters:
 
  - "**name**" - Necessary to make a valid block. This is the name that this font goes by in the UI, if this is a new font then subsequent font instances with different styles or sizes should use the same name.
+ - "**locale**" - Optional parameter to set this font as belonging to a particular locale only. See the :ref:`localization` guide. You will need to keep repeating the locale specifier if using prototypes to make a hierarchy.
  - "**size**" - Necessary to make a valid block. This is the point size of the font to use on the label.
  - "**bold**" - Optional parameter. Set it to "1" to make this font bold.
  - "**italic**" - Optional parameter. Set it to "1" to make this font italic.

docs/source/theme_reference/theme_progress_bar.rst

@@ -46,6 +46,7 @@ Font
 :class:`UIProgressBar <pygame_gui.elements.UIProgressBar>` accepts a font specified in the theme via a 'font' block. A 'font' block has these parameters:
 
  - "**name**" - Necessary to make a valid block. This is the name that this font goes by in the UI, if this is a new font then subsequent font instances with different styles or sizes should use the same name.
+ - "**locale**" - Optional parameter to set this font as belonging to a particular locale only. See the :ref:`localization` guide. You will need to keep repeating the locale specifier if using prototypes to make a hierarchy.
  - "**size**" - Necessary to make a valid block. This is the point size of the font to use on the health bar.
  - "**bold**" - Optional parameter. Set it to "1" to make this font bold.
  - "**italic**" - Optional parameter. Set it to "1" to make this font italic.

docs/source/theme_reference/theme_screen_space_health_bar.rst

@@ -46,6 +46,7 @@ Font
 :class:`UIScreenSpaceHealthBar <pygame_gui.elements.UIScreenSpaceHealthBar>` accepts a font specified in the theme via a 'font' block. A 'font' block has these parameters:
 
  - "**name**" - Necessary to make a valid block. This is the name that this font goes by in the UI, if this is a new font then subsequent font instances with different styles or sizes should use the same name.
+ - "**locale**" - Optional parameter to set this font as belonging to a particular locale only. See the :ref:`localization` guide. You will need to keep repeating the locale specifier if using prototypes to make a hierarchy.
  - "**size**" - Necessary to make a valid block. This is the point size of the font to use on the health bar.
  - "**bold**" - Optional parameter. Set it to "1" to make this font bold.
  - "**italic**" - Optional parameter. Set it to "1" to make this font italic.

docs/source/theme_reference/theme_text_entry_line.rst

@@ -35,6 +35,7 @@ Font
 :class:`UITextEntryLine <pygame_gui.elements.UITextEntryLine>` accepts a font specified in the theme via a 'font' block. A 'font' block has these parameters:
 
  - "**name**" - Necessary to make a valid block. This is the name that this font goes by in the UI, if this is a new font then subsequent font instances with different styles or sizes should use the same name.
+ - "**locale**" - Optional parameter to set this font as belonging to a particular locale only. See the :ref:`localization` guide. You will need to keep repeating the locale specifier if using prototypes to make a hierarchy.
  - "**size**" - Necessary to make a valid block. This is the point size of the font to use on the text entry line.
  - "**bold**" - Optional parameter. Set it to "1" to make this font bold.
  - "**italic**" - Optional parameter. Set it to "1" to make this font italic.

pygame_gui/core/ui_appearance_theme.py

@@ -897,26 +897,36 @@ def _load_element_font_data_from_theme(self,
             self.ui_element_fonts_info[element_name][locale] = {}
 
         font_info_dict = self.ui_element_fonts_info[element_name][locale]
-        font_info_dict['name'] = file_dict['name']
-        try:
-            font_info_dict['size'] = int(file_dict['size'])
-        except ValueError:
-            default_size = self.font_dict.default_font.size
-            font_info_dict['size'] = default_size
+        if 'name' in file_dict:
+            font_info_dict['name'] = file_dict['name']
+        if 'name' not in font_info_dict:
+            font_info_dict['name'] = self.font_dict.default_font.name
+
+        if 'size' in file_dict:
+            try:
+                font_info_dict['size'] = int(file_dict['size'])
+            except ValueError:
+                default_size = self.font_dict.default_font.size
+                font_info_dict['size'] = default_size
+        if 'size' not in font_info_dict:
+            font_info_dict['size'] = self.font_dict.default_font.size
+
         if 'bold' in file_dict:
             try:
                 font_info_dict['bold'] = bool(int(file_dict['bold']))
             except ValueError:
                 font_info_dict['bold'] = False
-        else:
+        if 'bold' not in font_info_dict:
             font_info_dict['bold'] = False
+
         if 'italic' in file_dict:
             try:
                 font_info_dict['italic'] = bool(int(file_dict['italic']))
             except ValueError:
                 font_info_dict['italic'] = False
-        else:
+        if 'italic' not in font_info_dict:
             font_info_dict['italic'] = False
+
         if 'regular_path' in file_dict:
             font_info_dict['regular_path'] = file_dict['regular_path']
         if 'bold_path' in file_dict:

pygame_gui/core/ui_font_dictionary.py

@@ -116,9 +116,9 @@ def __init__(self, resource_loader: IResourceLoader, locale: str):
                                         'zh': self._chinese_font}
 
         try:
-            self.default_font = self.default_font_dictionary[locale]
+            self.default_font: DefaultFontData = self.default_font_dictionary[locale]
         except KeyError:
-            self.default_font = self._latin_font
+            self.default_font: DefaultFontData = self._latin_font
 
         self.debug_font_size = 8