code release

resources/fonts/QXFontDB.py

@@ -0,0 +1,89 @@
+from pathlib import Path
+
+from localization import Localization
+from PyQt6.QtCore import *
+from PyQt6.QtGui import *
+from xlib import path as lib_path
+
+
+class QXFontDB():
+    _cached = {}
+
+    _file_to_family = {}
+
+    _families_loaded = set()
+
+    @staticmethod
+    def _load_family(name : str):
+        if name in QXFontDB._families_loaded:
+            return
+        QXFontDB._families_loaded.add(name)
+
+        dir = Path(__file__).parent / name
+        if not dir.exists() or not dir.is_dir():
+            raise Exception(f'Font family directory is not found: {dir}')
+
+        filepaths = lib_path.get_files_paths(dir)
+
+        families_loaded = []
+
+        for filepath in filepaths:
+            id = QFontDatabase.addApplicationFont(str(filepath))
+            families_loaded += QFontDatabase.applicationFontFamilies(id)
+
+        families_loaded = list(set(families_loaded))
+
+        if len(families_loaded) > 1:
+            raise Exception(f'More than one font family loaded from {dir}:\n{families_loaded}\nRemove unnecessary files.')
+
+        if name != families_loaded[0]:
+            raise Exception(f'Loaded font family is different from requested: {name} != {families_loaded[0]}')
+
+    @staticmethod
+    def _get(name : str, size : int, weight=None, italic=False, bold=False):
+        key = (name, size, weight, italic)
+        result = QXFontDB._cached.get(key, None)
+        if result is None:
+            QXFontDB._load_family(name)
+
+            result = QFont(name, size)
+            if weight is not None:
+                result.setWeight(weight)
+            result.setItalic(italic)
+            result.setBold(bold)
+
+            QXFontDB._cached[key] = result
+        return result
+
+    @staticmethod
+    def get_default_font(size=8, italic=False, bold=False):
+        lang = Localization.lang
+
+        if lang == 'zh-CN':
+            return QXFontDB.Noto_Sans_SC(size, italic=italic, bold=bold)
+        else:
+            return QXFontDB.Noto_Sans(size, italic=italic, bold=bold)
+
+    @staticmethod
+    def get_fixedwidth_font(size=8):
+        return QXFontDB.Noto_Mono(size)
+
+    @staticmethod
+    def Digital7_Mono(size, italic=False, bold=False):
+        return QXFontDB._get('Digital-7 Mono', size, italic=italic, bold=bold)
+
+    @staticmethod
+    def Noto_Mono(size, italic=False, bold=False):
+        return QXFontDB._get('Noto Mono', size, italic=italic, bold=bold)
+
+    @staticmethod
+    def Noto_Sans(size, italic=False, bold=False):
+        return QXFontDB._get('Noto Sans', size, italic=italic, bold=bold)
+
+    @staticmethod
+    def Noto_Sans_SC(size, italic=False, bold=False):
+        return QXFontDB._get('Noto Sans SC', size, italic=italic, bold=bold)
+
+    @staticmethod
+    def Tahoma(size, italic=False, bold=False):
+        return QXFontDB._get('Tahoma', size, italic=italic, bold=bold)