1 files changed, 33 insertions, 16 deletions

diff --git a/source/blender/blenfont/intern/blf_glyph.c b/source/blender/blenfont/intern/blf_glyph.c
index 4f25f99b65c..bcd9e1fb3a2 100644
--- a/source/blender/blenfont/intern/blf_glyph.c
+++ b/source/blender/blenfont/intern/blf_glyph.c
@@ -34,6 +34,7 @@
 #include FT_GLYPH_H
 #include FT_OUTLINE_H
 #include FT_BITMAP_H
+#include FT_ADVANCES_H /* For FT_Get_Advance. */
 
 #include "MEM_guardedalloc.h"
 
@@ -73,7 +74,7 @@ static FT_Fixed to_16dot16(double val)
 /** \name Glyph Cache
  * \{ */
 
-GlyphCacheBLF *blf_glyph_cache_find(FontBLF *font, float size, unsigned int dpi)
+static GlyphCacheBLF *blf_glyph_cache_find(FontBLF *font, float size, unsigned int dpi)
 {
   GlyphCacheBLF *gc = (GlyphCacheBLF *)font->cache.first;
   while (gc) {
@@ -86,7 +87,7 @@ GlyphCacheBLF *blf_glyph_cache_find(FontBLF *font, float size, unsigned int dpi)
   return NULL;
 }
 
-GlyphCacheBLF *blf_glyph_cache_new(FontBLF *font)
+static GlyphCacheBLF *blf_glyph_cache_new(FontBLF *font)
 {
   GlyphCacheBLF *gc = (GlyphCacheBLF *)MEM_callocN(sizeof(GlyphCacheBLF), "blf_glyph_cache_new");
 
@@ -100,6 +101,22 @@ GlyphCacheBLF *blf_glyph_cache_new(FontBLF *font)
   memset(gc->glyph_ascii_table, 0, sizeof(gc->glyph_ascii_table));
   memset(gc->bucket, 0, sizeof(gc->bucket));
 
+  /* Determine ideal fixed-width size for monospaced output. */
+  FT_UInt gindex = FT_Get_Char_Index(font->face, U'0');
+  if (gindex) {
+    FT_Fixed advance = 0;
+    FT_Get_Advance(font->face, gindex, FT_LOAD_NO_HINTING, &advance);
+    /* Use CSS 'ch unit' width, advance of zero character. */
+    gc->fixed_width = (int)(advance >> 16);
+  }
+  else {
+    /* Font does not contain "0" so use CSS fallback of 1/2 of em. */
+    gc->fixed_width = (int)((font->face->size->metrics.height / 2) >> 6);
+  }
+  if (gc->fixed_width < 1) {
+    gc->fixed_width = 1;
+  }
+
   BLI_addhead(&font->cache, gc);
   return gc;
 }
@@ -122,20 +139,7 @@ void blf_glyph_cache_release(FontBLF *font)
   BLI_spin_unlock(font->glyph_cache_mutex);
 }
 
-void blf_glyph_cache_clear(FontBLF *font)
-{
-  GlyphCacheBLF *gc;
-
-  BLI_spin_lock(font->glyph_cache_mutex);
-
-  while ((gc = BLI_pophead(&font->cache))) {
-    blf_glyph_cache_free(gc);
-  }
-
-  BLI_spin_unlock(font->glyph_cache_mutex);
-}
-
-void blf_glyph_cache_free(GlyphCacheBLF *gc)
+static void blf_glyph_cache_free(GlyphCacheBLF *gc)
 {
   GlyphBLF *g;
   for (uint i = 0; i < ARRAY_SIZE(gc->bucket); i++) {
@@ -152,6 +156,19 @@ void blf_glyph_cache_free(GlyphCacheBLF *gc)
   MEM_freeN(gc);
 }
 
+void blf_glyph_cache_clear(FontBLF *font)
+{
+  GlyphCacheBLF *gc;
+
+  BLI_spin_lock(font->glyph_cache_mutex);
+
+  while ((gc = BLI_pophead(&font->cache))) {
+    blf_glyph_cache_free(gc);
+  }
+
+  BLI_spin_unlock(font->glyph_cache_mutex);
+}
+
 /**
  * Try to find a glyph in cache.
  *