Index: third_party/harfbuzz-ng/src/hb-tt-font.cc |
diff --git a/third_party/harfbuzz-ng/src/hb-tt-font.cc b/third_party/harfbuzz-ng/src/hb-tt-font.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ccd86e1accd515fa7157328524ce578b8f3303f4 |
--- /dev/null |
+++ b/third_party/harfbuzz-ng/src/hb-tt-font.cc |
@@ -0,0 +1,242 @@ |
+/* |
+ * 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. |
+ * |
+ * Google Author(s): Behdad Esfahbod |
+ */ |
+ |
+#include "hb-open-type-private.hh" |
+ |
+#include "hb-ot-hhea-table.hh" |
+#include "hb-ot-hmtx-table.hh" |
+ |
+#include "hb-font-private.hh" |
+#include "hb-blob.h" |
+ |
+#include <string.h> |
+ |
+ |
+ |
+#if 0 |
+struct hb_tt_font_t |
+{ |
+ const struct hhea *hhea; |
+ hb_blob_t *hhea_blob; |
+}; |
+ |
+ |
+static hb_tt_font_t * |
+_hb_tt_font_create (hb_font_t *font) |
+{ |
+ /* TODO Remove this object altogether */ |
+ hb_tt_font_t *tt = (hb_tt_font_t *) calloc (1, sizeof (hb_tt_font_t)); |
+ |
+ tt->hhea_blob = Sanitizer<hhea>::sanitize (hb_face_reference_table (font->face, HB_OT_TAG_hhea)); |
+ tt->hhea = Sanitizer<hhea>::lock_instance (tt->hhea_blob); |
+ |
+ return tt; |
+} |
+ |
+static void |
+_hb_tt_font_destroy (hb_tt_font_t *tt) |
+{ |
+ hb_blob_destroy (tt->hhea_blob); |
+ |
+ free (tt); |
+} |
+ |
+static inline const hhea& |
+_get_hhea (hb_face_t *face) |
+{ |
+// return likely (face->tt && face->tt->hhea) ? *face->tt->hhea : Null(hhea); |
+} |
+ |
+ |
+/* |
+ * hb_tt_font_funcs_t |
+ */ |
+ |
+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) |
+{ |
+ if (font->parent) |
+ return hb_font_get_glyph (font->parent, unicode, variation_selector, glyph); |
+ |
+ *glyph = 0; |
+ return FALSE; |
+} |
+ |
+static hb_position_t |
+hb_font_get_glyph_h_advance_nil (hb_font_t *font HB_UNUSED, |
+ void *font_data HB_UNUSED, |
+ hb_codepoint_t glyph, |
+ void *user_data HB_UNUSED) |
+{ |
+ if (font->parent) |
+ return font->parent_scale_x_distance (hb_font_get_glyph_h_advance (font->parent, glyph)); |
+ |
+ return font->x_scale; |
+} |
+ |
+static hb_position_t |
+hb_font_get_glyph_v_advance_nil (hb_font_t *font HB_UNUSED, |
+ void *font_data HB_UNUSED, |
+ hb_codepoint_t glyph, |
+ void *user_data HB_UNUSED) |
+{ |
+ if (font->parent) |
+ return font->parent_scale_y_distance (hb_font_get_glyph_v_advance (font->parent, glyph)); |
+ |
+ return font->y_scale; |
+} |
+ |
+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) |
+{ |
+ if (font->parent) { |
+ hb_bool_t ret = hb_font_get_glyph_h_origin (font->parent, |
+ glyph, |
+ x, y); |
+ if (ret) |
+ font->parent_scale_position (x, y); |
+ return ret; |
+ } |
+ |
+ *x = *y = 0; |
+ return FALSE; |
+} |
+ |
+static hb_bool_t |
+hb_font_get_glyph_v_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) |
+{ |
+ if (font->parent) { |
+ hb_bool_t ret = hb_font_get_glyph_v_origin (font->parent, |
+ glyph, |
+ x, y); |
+ if (ret) |
+ font->parent_scale_position (x, y); |
+ return ret; |
+ } |
+ |
+ *x = *y = 0; |
+ return FALSE; |
+} |
+ |
+static hb_position_t |
+hb_font_get_glyph_h_kerning_nil (hb_font_t *font HB_UNUSED, |
+ void *font_data HB_UNUSED, |
+ hb_codepoint_t left_glyph, |
+ hb_codepoint_t right_glyph, |
+ void *user_data HB_UNUSED) |
+{ |
+ if (font->parent) |
+ return font->parent_scale_x_distance (hb_font_get_glyph_h_kerning (font->parent, left_glyph, right_glyph)); |
+ |
+ return 0; |
+} |
+ |
+static hb_position_t |
+hb_font_get_glyph_v_kerning_nil (hb_font_t *font HB_UNUSED, |
+ void *font_data HB_UNUSED, |
+ hb_codepoint_t top_glyph, |
+ hb_codepoint_t bottom_glyph, |
+ void *user_data HB_UNUSED) |
+{ |
+ if (font->parent) |
+ return font->parent_scale_y_distance (hb_font_get_glyph_v_kerning (font->parent, top_glyph, bottom_glyph)); |
+ |
+ return 0; |
+} |
+ |
+static hb_bool_t |
+hb_font_get_glyph_extents_nil (hb_font_t *font HB_UNUSED, |
+ void *font_data HB_UNUSED, |
+ hb_codepoint_t glyph, |
+ hb_glyph_extents_t *extents, |
+ void *user_data HB_UNUSED) |
+{ |
+ if (font->parent) { |
+ hb_bool_t ret = hb_font_get_glyph_extents (font->parent, |
+ glyph, |
+ extents); |
+ if (ret) { |
+ font->parent_scale_position (&extents->x_bearing, &extents->y_bearing); |
+ font->parent_scale_distance (&extents->width, &extents->height); |
+ } |
+ return ret; |
+ } |
+ |
+ memset (extents, 0, sizeof (*extents)); |
+ return FALSE; |
+} |
+ |
+static hb_bool_t |
+hb_font_get_glyph_contour_point_nil (hb_font_t *font HB_UNUSED, |
+ void *font_data HB_UNUSED, |
+ hb_codepoint_t glyph, |
+ unsigned int point_index, |
+ hb_position_t *x, |
+ hb_position_t *y, |
+ void *user_data HB_UNUSED) |
+{ |
+ if (font->parent) { |
+ hb_bool_t ret = hb_font_get_glyph_contour_point (font->parent, |
+ glyph, point_index, |
+ x, y); |
+ if (ret) |
+ font->parent_scale_position (x, y); |
+ return ret; |
+ } |
+ |
+ *x = *y = 0; |
+ return FALSE; |
+} |
+ |
+ |
+static hb_font_funcs_t _hb_font_funcs_nil = { |
+ HB_OBJECT_HEADER_STATIC, |
+ |
+ TRUE, /* immutable */ |
+ |
+ { |
+#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_nil, |
+ HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
+#undef HB_FONT_FUNC_IMPLEMENT |
+ } |
+}; |
+#endif |
+ |