Index: third_party/harfbuzz-ng/src/hb-font-private.hh |
diff --git a/third_party/harfbuzz-ng/src/hb-font-private.hh b/third_party/harfbuzz-ng/src/hb-font-private.hh |
new file mode 100644 |
index 0000000000000000000000000000000000000000..d896e72efe80df3476f0c8552ab3b49658c68277 |
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+++ b/third_party/harfbuzz-ng/src/hb-font-private.hh |
@@ -0,0 +1,163 @@ |
+/* |
+ * Copyright © 2009 Red Hat, Inc. |
+ * Copyright © 2011 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 |
+ * all copies of this software. |
+ * |
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
+ * DAMAGE. |
+ * |
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
+ * |
+ * Red Hat Author(s): Behdad Esfahbod |
+ * Google Author(s): Behdad Esfahbod |
+ */ |
+ |
+#ifndef HB_FONT_PRIVATE_HH |
+#define HB_FONT_PRIVATE_HH |
+ |
+#include "hb-private.hh" |
+ |
+#include "hb-font.h" |
+#include "hb-object-private.hh" |
+ |
+ |
+ |
+/* |
+ * hb_font_funcs_t |
+ */ |
+ |
+#define HB_FONT_FUNCS_IMPLEMENT_CALLBACKS \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph) \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph_h_advance) \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph_v_advance) \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph_h_origin) \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph_v_origin) \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph_h_kerning) \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph_v_kerning) \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph_extents) \ |
+ HB_FONT_FUNC_IMPLEMENT (glyph_contour_point) \ |
+ /* ^--- Add new callbacks here */ |
+ |
+struct _hb_font_funcs_t { |
+ hb_object_header_t header; |
+ |
+ hb_bool_t immutable; |
+ |
+ /* Don't access these directly. Call hb_font_get_*() instead. */ |
+ |
+ struct { |
+#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_func_t name; |
+ HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
+#undef HB_FONT_FUNC_IMPLEMENT |
+ } get; |
+ |
+ struct { |
+#define HB_FONT_FUNC_IMPLEMENT(name) void *name; |
+ HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
+#undef HB_FONT_FUNC_IMPLEMENT |
+ } user_data; |
+ |
+ struct { |
+#define HB_FONT_FUNC_IMPLEMENT(name) hb_destroy_func_t name; |
+ HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
+#undef HB_FONT_FUNC_IMPLEMENT |
+ } destroy; |
+}; |
+ |
+ |
+/* |
+ * hb_face_t |
+ */ |
+ |
+struct _hb_face_t { |
+ hb_object_header_t header; |
+ |
+ hb_bool_t immutable; |
+ |
+ hb_reference_table_func_t reference_table; |
+ void *user_data; |
+ hb_destroy_func_t destroy; |
+ |
+ struct hb_ot_layout_t *ot_layout; |
+ |
+ unsigned int index; |
+ unsigned int upem; |
+}; |
+ |
+ |
+/* |
+ * hb_font_t |
+ */ |
+ |
+struct _hb_font_t { |
+ hb_object_header_t header; |
+ |
+ hb_bool_t immutable; |
+ |
+ hb_font_t *parent; |
+ hb_face_t *face; |
+ |
+ int x_scale; |
+ int y_scale; |
+ |
+ unsigned int x_ppem; |
+ unsigned int y_ppem; |
+ |
+ hb_font_funcs_t *klass; |
+ void *user_data; |
+ hb_destroy_func_t destroy; |
+ |
+ |
+ /* Convert from font-space to user-space */ |
+ inline hb_position_t em_scale_x (int16_t v) { return em_scale (v, this->x_scale); } |
+ inline hb_position_t em_scale_y (int16_t v) { return em_scale (v, this->y_scale); } |
+ |
+ /* Convert from parent-font user-space to our user-space */ |
+ inline hb_position_t parent_scale_x_distance (hb_position_t v) { |
+ if (unlikely (parent && parent->x_scale != x_scale)) |
+ return v * (int64_t) this->x_scale / this->parent->x_scale; |
+ return v; |
+ } |
+ inline hb_position_t parent_scale_y_distance (hb_position_t v) { |
+ if (unlikely (parent && parent->y_scale != y_scale)) |
+ return v * (int64_t) this->y_scale / this->parent->y_scale; |
+ return v; |
+ } |
+ inline hb_position_t parent_scale_x_position (hb_position_t v) { |
+ return parent_scale_x_distance (v); |
+ } |
+ inline hb_position_t parent_scale_y_position (hb_position_t v) { |
+ return parent_scale_y_distance (v); |
+ } |
+ |
+ inline void parent_scale_distance (hb_position_t *x, hb_position_t *y) { |
+ *x = parent_scale_x_distance (*x); |
+ *y = parent_scale_y_distance (*y); |
+ } |
+ inline void parent_scale_position (hb_position_t *x, hb_position_t *y) { |
+ *x = parent_scale_x_position (*x); |
+ *y = parent_scale_y_position (*y); |
+ } |
+ |
+ |
+ private: |
+ inline hb_position_t em_scale (int16_t v, int scale) { return v * (int64_t) scale / hb_face_get_upem (this->face); } |
+}; |
+ |
+ |
+ |
+#endif /* HB_FONT_PRIVATE_HH */ |