commit e05a999495e6575f7cebd7f35db087d964f11ef6
author Behdad Esfahbod <behdad@behdad.org> Thu Nov 15 16:23:21 2012 -0800
committer Behdad Esfahbod <behdad@behdad.org> Thu Nov 15 16:23:21 2012 -0800
tree c759bf73a0c80bd4359fc6c64202b159bb3f3c8d
parent aec89de5641fbe1c3031d63dd5f40ec99bf2a538

Add hb_face_[sg]et_glyph_count()

src/hb-font-private.hh

diff --git a/src/hb-font-private.hh b/src/hb-font-private.hh
index b6dafbf..48fbb0e 100644
--- a/src/hb-font-private.hh
+++ b/src/hb-font-private.hh
@@ -100,6 +100,7 @@
 
   unsigned int index;
   mutable unsigned int upem;
+  mutable unsigned int num_glyphs;
 
   struct hb_shaper_data_t shaper_data;
 
@@ -130,8 +131,16 @@
     return upem;
   }
 
+  inline unsigned int get_num_glyphs (void) const
+  {
+    if (unlikely (num_glyphs == (unsigned int) -1))
+      load_num_glyphs ();
+    return num_glyphs;
+  }
+
   private:
   HB_INTERNAL void load_upem (void) const;
+  HB_INTERNAL void load_num_glyphs (void) const;
 };
 
 #define HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS

src/hb-font.cc

diff --git a/src/hb-font.cc b/src/hb-font.cc
index 0627032..b59fdeb 100644
--- a/src/hb-font.cc
+++ b/src/hb-font.cc
@@ -34,6 +34,7 @@
 #include "hb-blob.h"
 #include "hb-open-file-private.hh"
 #include "hb-ot-head-table.hh"
+#include "hb-ot-maxp-table.hh"
 
 #include "hb-cache-private.hh"
 
@@ -520,6 +521,7 @@
 
   0,    /* index */
   1000, /* upem */
+  0,    /* num_glyphs */
 
   {
 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
@@ -549,6 +551,7 @@
   face->destroy = destroy;
 
   face->upem = 0;
+  face->num_glyphs = (unsigned int) -1;
 
   return face;
 }
@@ -736,7 +739,6 @@
   return face->get_upem ();
 }
 
-
 void
 hb_face_t::load_upem (void) const
 {
@@ -746,6 +748,31 @@
   hb_blob_destroy (head_blob);
 }
 
+void
+hb_face_set_glyph_count (hb_face_t    *face,
+			 unsigned int  glyph_count)
+{
+  if (hb_object_is_inert (face))
+    return;
+
+  face->num_glyphs = glyph_count;
+}
+
+unsigned int
+hb_face_get_glyph_count (hb_face_t *face)
+{
+  return face->get_num_glyphs ();
+}
+
+void
+hb_face_t::load_num_glyphs (void) const
+{
+  hb_blob_t *maxp_blob = OT::Sanitizer<OT::maxp>::sanitize (reference_table (HB_OT_TAG_maxp));
+  const OT::maxp *maxp_table = OT::Sanitizer<OT::maxp>::lock_instance (maxp_blob);
+  num_glyphs = maxp_table->get_num_glyphs ();
+  hb_blob_destroy (maxp_blob);
+}
+
 
 /*
  * hb_font_t

src/hb-font.h

diff --git a/src/hb-font.h b/src/hb-font.h
index d796856..88d4895 100644
--- a/src/hb-font.h
+++ b/src/hb-font.h
@@ -105,6 +105,13 @@
 unsigned int
 hb_face_get_upem (hb_face_t *face);
 
+void
+hb_face_set_glyph_count (hb_face_t    *face,
+			 unsigned int  glyph_count);
+
+unsigned int
+hb_face_get_glyph_count (hb_face_t *face);
+
 
 /*
  * hb_font_funcs_t