font

src/utils/__init__.py

@@ -18,13 +18,14 @@ from .constants import (
     is_free_version,
     is_full_version
 )
-from .system import install_pillow, get_system_fonts, get_font_enum_items
+from .system import install_pillow, get_system_fonts, get_font_enum_items, find_default_truetype_font
 
 __all__ = [
     'bl_info',
     'install_pillow',
     'get_system_fonts',
     'get_font_enum_items',
+    'find_default_truetype_font',
     'has_image_overlays',
     'has_basic_utilities',
     'has_presets',
@@ -38,4 +39,4 @@ __all__ = [
     'has_shader_generation',
     'is_free_version',
     'is_full_version'
-]
+]

src/utils/system.py

@@ -7,6 +7,8 @@ import sys
 import platform
 import os
 
+_DEFAULT_FONT_CACHE = None
+
 def install_pillow():
     pass
     """Install Pillow if not available"""
@@ -98,4 +100,100 @@ def get_anchor_point_matrix():
         ['TOP_LEFT', 'TOP_CENTER', 'TOP_RIGHT'],
         ['MIDDLE_LEFT', 'MIDDLE_CENTER', 'MIDDLE_RIGHT'],
         ['BOTTOM_LEFT', 'BOTTOM_CENTER', 'BOTTOM_RIGHT']
-    ]
+    ]
+
+def find_default_truetype_font():
+    pass
+    """Return a system font path that can act as scalable default."""
+    global _DEFAULT_FONT_CACHE
+    if _DEFAULT_FONT_CACHE is not None:
+        pass
+        return _DEFAULT_FONT_CACHE
+
+    system = platform.system().lower()
+    preferred_fonts = []
+    if system == "windows":
+        preferred_fonts = [
+            "C:/Windows/Fonts/arial.ttf",
+            "C:/Windows/Fonts/segoeui.ttf",
+            "C:/Windows/Fonts/calibri.ttf",
+            "C:/Windows/Fonts/tahoma.ttf",
+        ]
+    elif system == "darwin":
+        preferred_fonts = [
+            "/System/Library/Fonts/SFNS.ttf",
+            "/System/Library/Fonts/SFNSDisplay.ttf",
+            "/System/Library/Fonts/Helvetica.ttc",
+            "/Library/Fonts/Arial.ttf",
+            "/Library/Fonts/HelveticaNeue.ttc",
+        ]
+    else:
+        preferred_fonts = [
+            "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
+            "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf",
+            "/usr/share/fonts/truetype/freefont/FreeSans.ttf",
+        ]
+
+    def _font_supports_basic_latin(font_path):
+        pass
+        try:
+            from PIL import ImageFont
+        except ImportError:
+            return False
+
+        try:
+            font = ImageFont.truetype(font_path, 48)
+        except (OSError, IOError, TypeError, ValueError):
+            return False
+
+        try:
+            bbox_upper = font.getbbox("H")
+            bbox_lower = font.getbbox("e")
+        except Exception:
+            return False
+
+        if not bbox_upper or not bbox_lower:
+            return False
+
+        try:
+            upper_width = float(bbox_upper[2] - bbox_upper[0])
+            upper_height = float(bbox_upper[3] - bbox_upper[1])
+            lower_width = float(bbox_lower[2] - bbox_lower[0])
+            lower_height = float(bbox_lower[3] - bbox_lower[1])
+        except (TypeError, ValueError):
+            return False
+
+        if min(upper_width, upper_height, lower_width, lower_height) <= 0:
+            return False
+
+        if lower_height > upper_height * 1.3:
+            return False
+
+        if lower_width > upper_width * 1.5:
+            return False
+
+        return True
+
+    for candidate in preferred_fonts:
+        if candidate and os.path.exists(candidate) and _font_supports_basic_latin(candidate):
+            _DEFAULT_FONT_CACHE = candidate
+            return _DEFAULT_FONT_CACHE
+
+    fonts = get_system_fonts()
+    for _, font_path in sorted(fonts.items()):
+        if os.path.exists(font_path) and _font_supports_basic_latin(font_path):
+            _DEFAULT_FONT_CACHE = font_path
+            return _DEFAULT_FONT_CACHE
+
+    try:
+        from ..ui.preview import get_system_fallback_fonts
+        fallback_fonts = get_system_fallback_fonts()
+        for font_path in fallback_fonts:
+            if os.path.exists(font_path) and _font_supports_basic_latin(font_path):
+                _DEFAULT_FONT_CACHE = font_path
+                return _DEFAULT_FONT_CACHE
+    except Exception:
+        pass
+
+    _DEFAULT_FONT_CACHE = None
+    return _DEFAULT_FONT_CACHE