Roll harfbuzz-ng to 1.0.5

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 218 matching lines @@
 };
 
 
 /**
  * hb_font_funcs_create: (Xconstructor)
  *
  * 
  *
  * Return value: (transfer full): 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_font_funcs_t *
 hb_font_funcs_create (void)
 {
   hb_font_funcs_t *ffuncs;
 
   if (!(ffuncs = hb_object_create<hb_font_funcs_t> ()))
     return hb_font_funcs_get_empty ();
 
   ffuncs->get = _hb_font_funcs_nil.get;
 
   return ffuncs;
 }
 
 /**
  * hb_font_funcs_get_empty:
  *
  * 
  *
  * Return value: (transfer full): 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_font_funcs_t *
 hb_font_funcs_get_empty (void)
 {
   return const_cast<hb_font_funcs_t *> (&_hb_font_funcs_nil);
 }
 
 /**
  * hb_font_funcs_reference: (skip)
  * @ffuncs: font functions.
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_font_funcs_t *
 hb_font_funcs_reference (hb_font_funcs_t *ffuncs)
 {
   return hb_object_reference (ffuncs);
 }
 
 /**
  * hb_font_funcs_destroy: (skip)
  * @ffuncs: font functions.
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_funcs_destroy (hb_font_funcs_t *ffuncs)
 {
   if (!hb_object_destroy (ffuncs)) return;
 
 #define HB_FONT_FUNC_IMPLEMENT(name) if (ffuncs->destroy.name) \
   ffuncs->destroy.name (ffuncs->user_data.name);
   HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_FONT_FUNC_IMPLEMENT
 
   free (ffuncs);
 }
 
 /**
  * hb_font_funcs_set_user_data: (skip)
  * @ffuncs: font functions.
  * @key: 
  * @data: 
  * @destroy: 
  * @replace: 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_funcs_set_user_data (hb_font_funcs_t    *ffuncs,
                              hb_user_data_key_t *key,
                              void *              data,
                              hb_destroy_func_t   destroy,
                              hb_bool_t           replace)
 {
   return hb_object_set_user_data (ffuncs, key, data, destroy, replace);
 }
 
 /**
  * hb_font_funcs_get_user_data: (skip)
  * @ffuncs: font functions.
  * @key: 
  *
  * 
  *
  * Return value: (transfer none): 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void *
 hb_font_funcs_get_user_data (hb_font_funcs_t    *ffuncs,
                              hb_user_data_key_t *key)
 {
   return hb_object_get_user_data (ffuncs, key);
 }
 
 
 /**
  * hb_font_funcs_make_immutable:
  * @ffuncs: font functions.
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs)
 {
   if (unlikely (hb_object_is_inert (ffuncs)))
     return;
 
   ffuncs->immutable = true;
 }
 
 /**
  * hb_font_funcs_is_immutable:
  * @ffuncs: font functions.
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs)
 {
   return ffuncs->immutable;
 }
 
 
 #define HB_FONT_FUNC_IMPLEMENT(name) \
                                                                          \
@@ skipping 33 matching lines @@
  * hb_font_get_glyph:
  * @font: a font.
  * @unicode: 
  * @variation_selector: 
  * @glyph: (out): 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_get_glyph (hb_font_t *font,
                    hb_codepoint_t unicode, hb_codepoint_t variation_selector,
                    hb_codepoint_t *glyph)
 {
   return font->get_glyph (unicode, variation_selector, glyph);
 }
 
 /**
  * hb_font_get_glyph_h_advance:
  * @font: a font.
  * @glyph: 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_position_t
 hb_font_get_glyph_h_advance (hb_font_t *font,
                              hb_codepoint_t glyph)
 {
   return font->get_glyph_h_advance (glyph);
 }
 
 /**
  * hb_font_get_glyph_v_advance:
  * @font: a font.
  * @glyph: 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_position_t
 hb_font_get_glyph_v_advance (hb_font_t *font,
                              hb_codepoint_t glyph)
 {
   return font->get_glyph_v_advance (glyph);
 }
 
 /**
  * hb_font_get_glyph_h_origin:
  * @font: a font.
  * @glyph: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_get_glyph_h_origin (hb_font_t *font,
                             hb_codepoint_t glyph,
                             hb_position_t *x, hb_position_t *y)
 {
   return font->get_glyph_h_origin (glyph, x, y);
 }
 
 /**
  * hb_font_get_glyph_v_origin:
  * @font: a font.
  * @glyph: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_get_glyph_v_origin (hb_font_t *font,
                             hb_codepoint_t glyph,
                             hb_position_t *x, hb_position_t *y)
 {
   return font->get_glyph_v_origin (glyph, x, y);
 }
 
 /**
  * hb_font_get_glyph_h_kerning:
  * @font: a font.
  * @left_glyph: 
  * @right_glyph: 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_position_t
 hb_font_get_glyph_h_kerning (hb_font_t *font,
                              hb_codepoint_t left_glyph, hb_codepoint_t right_glyph)
 {
   return font->get_glyph_h_kerning (left_glyph, right_glyph);
 }
 
 /**
  * hb_font_get_glyph_v_kerning:
  * @font: a font.
  * @top_glyph: 
  * @bottom_glyph: 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_position_t
 hb_font_get_glyph_v_kerning (hb_font_t *font,
                              hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph)
 {
   return font->get_glyph_v_kerning (top_glyph, bottom_glyph);
 }
 
 /**
  * hb_font_get_glyph_extents:
  * @font: a font.
  * @glyph: 
  * @extents: (out): 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_get_glyph_extents (hb_font_t *font,
                            hb_codepoint_t glyph,
                            hb_glyph_extents_t *extents)
 {
   return font->get_glyph_extents (glyph, extents);
 }
 
 /**
  * hb_font_get_glyph_contour_point:
  * @font: a font.
  * @glyph: 
  * @point_index: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_get_glyph_contour_point (hb_font_t *font,
                                  hb_codepoint_t glyph, unsigned int point_index,
                                  hb_position_t *x, hb_position_t *y)
 {
   return font->get_glyph_contour_point (glyph, point_index, x, y);
 }
 
 /**
@@ skipping 44 matching lines @@
 /**
  * hb_font_get_glyph_advance_for_direction:
  * @font: a font.
  * @glyph: 
  * @direction: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_get_glyph_advance_for_direction (hb_font_t *font,
                                          hb_codepoint_t glyph,
                                          hb_direction_t direction,
                                          hb_position_t *x, hb_position_t *y)
 {
   return font->get_glyph_advance_for_direction (glyph, direction, x, y);
 }
 
 /**
  * hb_font_get_glyph_origin_for_direction:
  * @font: a font.
  * @glyph: 
  * @direction: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_get_glyph_origin_for_direction (hb_font_t *font,
                                         hb_codepoint_t glyph,
                                         hb_direction_t direction,
                                         hb_position_t *x, hb_position_t *y)
 {
   return font->get_glyph_origin_for_direction (glyph, direction, x, y);
 }
 
 /**
  * hb_font_add_glyph_origin_for_direction:
  * @font: a font.
  * @glyph: 
  * @direction: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_add_glyph_origin_for_direction (hb_font_t *font,
                                         hb_codepoint_t glyph,
                                         hb_direction_t direction,
                                         hb_position_t *x, hb_position_t *y)
 {
   return font->add_glyph_origin_for_direction (glyph, direction, x, y);
 }
 
 /**
  * hb_font_subtract_glyph_origin_for_direction:
  * @font: a font.
  * @glyph: 
  * @direction: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_subtract_glyph_origin_for_direction (hb_font_t *font,
                                              hb_codepoint_t glyph,
                                              hb_direction_t direction,
                                              hb_position_t *x, hb_position_t *y)
 {
   return font->subtract_glyph_origin_for_direction (glyph, direction, x, y);
 }
 
 /**
  * hb_font_get_glyph_kerning_for_direction:
  * @font: a font.
  * @first_glyph: 
  * @second_glyph: 
  * @direction: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
                                          hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
                                          hb_direction_t direction,
                                          hb_position_t *x, hb_position_t *y)
 {
   return font->get_glyph_kerning_for_direction (first_glyph, second_glyph, direction, x, y);
 }
 
 /**
  * hb_font_get_glyph_extents_for_origin:
  * @font: a font.
  * @glyph: 
  * @direction: 
  * @extents: (out): 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_get_glyph_extents_for_origin (hb_font_t *font,
                                       hb_codepoint_t glyph,
                                       hb_direction_t direction,
                                       hb_glyph_extents_t *extents)
 {
   return font->get_glyph_extents_for_origin (glyph, direction, extents);
 }
 
 /**
  * hb_font_get_glyph_contour_point_for_origin:
  * @font: a font.
  * @glyph: 
  * @point_index: 
  * @direction: 
  * @x: (out): 
  * @y: (out): 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_get_glyph_contour_point_for_origin (hb_font_t *font,
                                             hb_codepoint_t glyph, unsigned int point_index,
                                             hb_direction_t direction,
                                             hb_position_t *x, hb_position_t *y)
 {
   return font->get_glyph_contour_point_for_origin (glyph, point_index, direction, x, y);
 }
 
@@ skipping 45 matching lines @@
  */
 
 /**
  * hb_font_create: (Xconstructor)
  * @face: a face.
  *
  * 
  *
  * Return value: (transfer full): 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_font_t *
 hb_font_create (hb_face_t *face)
 {
   hb_font_t *font;
 
   if (unlikely (!face))
     face = hb_face_get_empty ();
   if (!(font = hb_object_create<hb_font_t> ()))
     return hb_font_get_empty ();
 
   hb_face_make_immutable (face);
   font->face = hb_face_reference (face);
   font->klass = hb_font_funcs_get_empty ();
 
+  font->x_scale = font->y_scale = hb_face_get_upem (face);
+
   return font;
 }
 
 /**
  * hb_font_create_sub_font:
  * @parent: parent font.
  *
  * 
  *
  * Return value: (transfer full): 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_font_t *
 hb_font_create_sub_font (hb_font_t *parent)
 {
   if (unlikely (!parent))
     parent = hb_font_get_empty ();
 
   hb_font_t *font = hb_font_create (parent->face);
 
   if (unlikely (hb_object_is_inert (font)))
     return font;
 
-  hb_font_make_immutable (parent);
   font->parent = hb_font_reference (parent);
 
   font->x_scale = parent->x_scale;
   font->y_scale = parent->y_scale;
   font->x_ppem = parent->x_ppem;
   font->y_ppem = parent->y_ppem;
 
   return font;
 }
 
 /**
  * hb_font_get_empty:
  *
  * 
  *
  * Return value: (transfer full)
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_font_t *
 hb_font_get_empty (void)
 {
   static const hb_font_t _hb_font_nil = {
     HB_OBJECT_HEADER_STATIC,
 
     true, /* immutable */
 
     NULL, /* parent */
@@ skipping 20 matching lines @@
 }
 
 /**
  * hb_font_reference: (skip)
  * @font: a font.
  *
  * 
  *
  * Return value: (transfer full): 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_font_t *
 hb_font_reference (hb_font_t *font)
 {
   return hb_object_reference (font);
 }
 
 /**
  * hb_font_destroy: (skip)
  * @font: a font.
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_destroy (hb_font_t *font)
 {
   if (!hb_object_destroy (font)) return;
 
 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, font);
 #include "hb-shaper-list.hh"
 #undef HB_SHAPER_IMPLEMENT
 
@@ skipping 12 matching lines @@
  * @font: a font.
  * @key: 
  * @data: 
  * @destroy: 
  * @replace: 
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_set_user_data (hb_font_t          *font,
                        hb_user_data_key_t *key,
                        void *              data,
                        hb_destroy_func_t   destroy,
                        hb_bool_t           replace)
 {
   return hb_object_set_user_data (font, key, data, destroy, replace);
 }
 
 /**
  * hb_font_get_user_data: (skip)
  * @font: a font.
  * @key: 
  *
  * 
  *
  * Return value: (transfer none): 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void *
 hb_font_get_user_data (hb_font_t          *font,
                        hb_user_data_key_t *key)
 {
   return hb_object_get_user_data (font, key);
 }
 
 /**
  * hb_font_make_immutable:
  * @font: a font.
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_make_immutable (hb_font_t *font)
 {
   if (unlikely (hb_object_is_inert (font)))
     return;
 
+  if (font->parent)
+    hb_font_make_immutable (font->parent);
+
   font->immutable = true;
 }
 
 /**
  * hb_font_is_immutable:
  * @font: a font.
  *
  * 
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_bool_t
 hb_font_is_immutable (hb_font_t *font)
 {
   return font->immutable;
 }
 
 /**
+ * hb_font_set_parent:
+ * @font: a font.
+ * @parent: new parent.
+ *
+ * Sets parent font of @font.
+ *
+ * Since: 1.0.5
+ **/
+void
+hb_font_set_parent (hb_font_t *font,
+                    hb_font_t *parent)
+{
+  if (font->immutable)
+    return;
+
+  if (!parent)
+    parent = hb_font_get_empty ();
+
+  hb_font_t *old = font->parent;
+
+  font->parent = hb_font_reference (parent);
+
+  hb_font_destroy (old);
+}
+
+/**
  * hb_font_get_parent:
  * @font: a font.
  *
  * 
  *
  * Return value: (transfer none): 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_font_t *
 hb_font_get_parent (hb_font_t *font)
 {
   return font->parent;
 }
 
 /**
  * hb_font_get_face:
  * @font: a font.
@@ skipping 78 matching lines @@
 
 
 /**
  * hb_font_set_scale:
  * @font: a font.
  * @x_scale: 
  * @y_scale: 
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_set_scale (hb_font_t *font,
                    int x_scale,
                    int y_scale)
 {
   if (font->immutable)
     return;
 
   font->x_scale = x_scale;
   font->y_scale = y_scale;
 }
 
 /**
  * hb_font_get_scale:
  * @font: a font.
  * @x_scale: (out): 
  * @y_scale: (out): 
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_get_scale (hb_font_t *font,
                    int *x_scale,
                    int *y_scale)
 {
   if (x_scale) *x_scale = font->x_scale;
   if (y_scale) *y_scale = font->y_scale;
 }
 
 /**
  * hb_font_set_ppem:
  * @font: a font.
  * @x_ppem: 
  * @y_ppem: 
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 void
 hb_font_set_ppem (hb_font_t *font,
                   unsigned int x_ppem,
                   unsigned int y_ppem)
 {
   if (font->immutable)
     return;
 
   font->x_ppem = x_ppem;
   font->y_ppem = y_ppem;
 }
 
 /**
  * hb_font_get_ppem:
  * @font: a font.
  * @x_ppem: (out): 
  * @y_ppem: (out): 
  *
  * 
  *
- * Since: 1.0
+ * 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;
 }