Roll HarfBuzz to 1.1.3

third_party/harfbuzz-ng/src/hb-font.cc

 /*
  * Copyright © 2009  Red Hat, Inc.
  * Copyright © 2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
@@ skipping 27 matching lines @@
 #include "hb-cache-private.hh"
 
 #include <string.h>
 
 
 /*
  * hb_font_funcs_t
  */
 
 static hb_bool_t
+hb_font_get_font_h_extents_nil (hb_font_t *font,
+                                void *font_data HB_UNUSED,
+                                hb_font_extents_t *metrics,
+                                void *user_data HB_UNUSED)
+{
+  memset (metrics, 0, sizeof (*metrics));
+  return false;
+}
+static hb_bool_t
+hb_font_get_font_h_extents_parent (hb_font_t *font,
+                                   void *font_data HB_UNUSED,
+                                   hb_font_extents_t *metrics,
+                                   void *user_data HB_UNUSED)
+{
+  hb_bool_t ret = font->parent->get_font_h_extents (metrics);
+  if (ret) {
+    metrics->ascender = font->parent_scale_y_distance (metrics->ascender);
+    metrics->descender = font->parent_scale_y_distance (metrics->descender);
+    metrics->line_gap = font->parent_scale_y_distance (metrics->line_gap);
+  }
+  return ret;
+}
+
+static hb_bool_t
+hb_font_get_font_v_extents_nil (hb_font_t *font,
+                                void *font_data HB_UNUSED,
+                                hb_font_extents_t *metrics,
+                                void *user_data HB_UNUSED)
+{
+  memset (metrics, 0, sizeof (*metrics));
+  return false;
+}
+static hb_bool_t
+hb_font_get_font_v_extents_parent (hb_font_t *font,
+                                   void *font_data HB_UNUSED,
+                                   hb_font_extents_t *metrics,
+                                   void *user_data HB_UNUSED)
+{
+  hb_bool_t ret = font->parent->get_font_v_extents (metrics);
+  if (ret) {
+    metrics->ascender = font->parent_scale_x_distance (metrics->ascender);
+    metrics->descender = font->parent_scale_x_distance (metrics->descender);
+    metrics->line_gap = font->parent_scale_x_distance (metrics->line_gap);
+  }
+  return ret;
+}
+
+static hb_bool_t
 hb_font_get_glyph_nil (hb_font_t *font HB_UNUSED,
                        void *font_data HB_UNUSED,
                        hb_codepoint_t unicode,
                        hb_codepoint_t variation_selector,
                        hb_codepoint_t *glyph,
                        void *user_data HB_UNUSED)
 {
   *glyph = 0;
   return false;
 }
@@ skipping 44 matching lines @@
 
 static hb_bool_t
 hb_font_get_glyph_h_origin_nil (hb_font_t *font HB_UNUSED,
                                 void *font_data HB_UNUSED,
                                 hb_codepoint_t glyph,
                                 hb_position_t *x,
                                 hb_position_t *y,
                                 void *user_data HB_UNUSED)
 {
   *x = *y = 0;
-  return false;
+  return true;
 }
 static hb_bool_t
 hb_font_get_glyph_h_origin_parent (hb_font_t *font,
                                    void *font_data HB_UNUSED,
                                    hb_codepoint_t glyph,
                                    hb_position_t *x,
                                    hb_position_t *y,
                                    void *user_data HB_UNUSED)
 {
   hb_bool_t ret = font->parent->get_glyph_h_origin (glyph, x, y);
@@ skipping 150 matching lines @@
 static hb_bool_t
 hb_font_get_glyph_from_name_parent (hb_font_t *font,
                                     void *font_data HB_UNUSED,
                                     const char *name, int len, /* -1 means nul-terminated */
                                     hb_codepoint_t *glyph,
                                     void *user_data HB_UNUSED)
 {
   return font->parent->get_glyph_from_name (name, len, glyph);
 }
 
-
 static const hb_font_funcs_t _hb_font_funcs_nil = {
   HB_OBJECT_HEADER_STATIC,
 
   true, /* immutable */
 
   {
 #define HB_FONT_FUNC_IMPLEMENT(name) NULL,
     HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_FONT_FUNC_IMPLEMENT
   },
@@ skipping 221 matching lines @@
 hb_font_t::has_func (unsigned int i)
 {
   if (parent && parent != hb_font_get_empty () && parent->has_func (i))
     return true;
   return this->klass->get.array[i] != _hb_font_funcs_parent.get.array[i];
 }
 
 /* Public getters */
 
 /**
+ * hb_font_get_h_extents:
+ * @font: a font.
+ * @extents: (out):
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 1.1.3
+ **/
+hb_bool_t
+hb_font_get_h_extents (hb_font_t *font,
+                       hb_font_extents_t *extents)
+{
+  return font->get_font_h_extents (extents);
+}
+
+/**
+ * hb_font_get_v_extents:
+ * @font: a font.
+ * @extents: (out):
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 1.1.3
+ **/
+hb_bool_t
+hb_font_get_v_extents (hb_font_t *font,
+                       hb_font_extents_t *extents)
+{
+  return font->get_font_v_extents (extents);
+}
+
+/**
  * hb_font_get_glyph:
  * @font: a font.
  * @unicode: 
  * @variation_selector: 
  * @glyph: (out): 
  *
  * 
  *
  * Return value: 
  *
@@ skipping 204 matching lines @@
                              const char *name, int len, /* -1 means nul-terminated */
                              hb_codepoint_t *glyph)
 {
   return font->get_glyph_from_name (name, len, glyph);
 }
 
 
 /* A bit higher-level, and with fallback */
 
 /**
+ * hb_font_get_extents_for_direction:
+ * @font: a font.
+ * @direction:
+ * @extents:
+ *
+ *
+ *
+ * Since: 1.1.3
+ **/
+void
+hb_font_get_extents_for_direction (hb_font_t *font,
+                                   hb_direction_t direction,
+                                   hb_font_extents_t *extents)
+{
+  return font->get_extents_for_direction (direction, extents);
+}
+/**
  * hb_font_get_glyph_advance_for_direction:
  * @font: a font.
  * @glyph: 
  * @direction: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
  * Since: 0.9.2
@@ skipping 606 matching lines @@
  * Since: 0.9.2
  **/
 void
 hb_font_get_ppem (hb_font_t *font,
                   unsigned int *x_ppem,
                   unsigned int *y_ppem)
 {
   if (x_ppem) *x_ppem = font->x_ppem;
   if (y_ppem) *y_ppem = font->y_ppem;
 }