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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font-private.hh41
1 files changed, 39 insertions, 2 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font-private.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font-private.hh
index 7255cb95d43..9138c236dd6 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font-private.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font-private.hh
@@ -42,6 +42,8 @@
*/
#define HB_FONT_FUNCS_IMPLEMENT_CALLBACKS \
+ HB_FONT_FUNC_IMPLEMENT (font_h_extents) \
+ HB_FONT_FUNC_IMPLEMENT (font_v_extents) \
HB_FONT_FUNC_IMPLEMENT (glyph) \
HB_FONT_FUNC_IMPLEMENT (glyph_h_advance) \
HB_FONT_FUNC_IMPLEMENT (glyph_v_advance) \
@@ -80,7 +82,7 @@ struct hb_font_funcs_t {
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
} f;
- void (*array[]) (void);
+ void (*array[VAR]) (void);
} get;
};
@@ -160,6 +162,21 @@ struct hb_font_t {
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
+ inline hb_bool_t get_font_h_extents (hb_font_extents_t *extents)
+ {
+ memset (extents, 0, sizeof (*extents));
+ return klass->get.f.font_h_extents (this, user_data,
+ extents,
+ klass->user_data.font_h_extents);
+ }
+ inline hb_bool_t get_font_v_extents (hb_font_extents_t *extents)
+ {
+ memset (extents, 0, sizeof (*extents));
+ return klass->get.f.font_v_extents (this, user_data,
+ extents,
+ klass->user_data.font_v_extents);
+ }
+
inline bool has_glyph (hb_codepoint_t unicode)
{
hb_codepoint_t glyph;
@@ -265,6 +282,26 @@ struct hb_font_t {
/* A bit higher-level, and with fallback */
+ inline void get_extents_for_direction (hb_direction_t direction,
+ hb_font_extents_t *extents)
+ {
+ if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) {
+ if (!get_font_h_extents (extents))
+ {
+ extents->ascender = y_scale * .8;
+ extents->descender = y_scale - extents->ascender;
+ extents->line_gap = 0;
+ }
+ } else {
+ if (!get_font_v_extents (extents))
+ {
+ extents->ascender = x_scale / 2;
+ extents->descender = x_scale - extents->ascender;
+ extents->line_gap = 0;
+ }
+ }
+ }
+
inline void get_glyph_advance_for_direction (hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
@@ -284,7 +321,7 @@ struct hb_font_t {
{
*x = get_glyph_h_advance (glyph) / 2;
- /* TODO use font_metrics.ascent */
+ /* TODO use font_extents.ascender */
*y = y_scale;
}