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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-0.9.8/src/hb-ot-shape-fallback.cc409
1 files changed, 0 insertions, 409 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.8/src/hb-ot-shape-fallback.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.8/src/hb-ot-shape-fallback.cc
deleted file mode 100644
index f4463e4eeca..00000000000
--- a/Build/source/libs/harfbuzz/harfbuzz-0.9.8/src/hb-ot-shape-fallback.cc
+++ /dev/null
@@ -1,409 +0,0 @@
-/*
- * Copyright © 2011,2012 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
- * 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-ot-shape-fallback-private.hh"
-
-static unsigned int
-recategorize_combining_class (hb_codepoint_t u,
- unsigned int klass)
-{
- if (klass >= 200)
- return klass;
-
- /* Thai / Lao need some per-character work. */
- if ((u & ~0xFF) == 0x0E00)
- {
- if (unlikely (klass == 0))
- {
- switch (u)
- {
- case 0x0E31:
- case 0x0E34:
- case 0x0E35:
- case 0x0E36:
- case 0x0E37:
- case 0x0E47:
- case 0x0E4C:
- case 0x0E4D:
- case 0x0E4E:
- klass = HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT;
- break;
-
- case 0x0EB1:
- case 0x0EB4:
- case 0x0EB5:
- case 0x0EB6:
- case 0x0EB7:
- case 0x0EBB:
- case 0x0ECC:
- case 0x0ECD:
- klass = HB_UNICODE_COMBINING_CLASS_ABOVE;
- break;
-
- case 0x0EBC:
- klass = HB_UNICODE_COMBINING_CLASS_BELOW;
- break;
- }
- } else {
- /* Thai virama is below-right */
- if (u == 0x0E3A)
- klass = HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT;
- }
- }
-
- switch (klass)
- {
-
- /* Hebrew */
-
- case HB_MODIFIED_COMBINING_CLASS_CCC10: /* sheva */
- case HB_MODIFIED_COMBINING_CLASS_CCC11: /* hataf segol */
- case HB_MODIFIED_COMBINING_CLASS_CCC12: /* hataf patah */
- case HB_MODIFIED_COMBINING_CLASS_CCC13: /* hataf qamats */
- case HB_MODIFIED_COMBINING_CLASS_CCC14: /* hiriq */
- case HB_MODIFIED_COMBINING_CLASS_CCC15: /* tsere */
- case HB_MODIFIED_COMBINING_CLASS_CCC16: /* segol */
- case HB_MODIFIED_COMBINING_CLASS_CCC17: /* patah */
- case HB_MODIFIED_COMBINING_CLASS_CCC18: /* qamats */
- case HB_MODIFIED_COMBINING_CLASS_CCC20: /* qubuts */
- case HB_MODIFIED_COMBINING_CLASS_CCC22: /* meteg */
- return HB_UNICODE_COMBINING_CLASS_BELOW;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC23: /* rafe */
- return HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC24: /* shin dot */
- return HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC25: /* sin dot */
- case HB_MODIFIED_COMBINING_CLASS_CCC19: /* holam */
- return HB_UNICODE_COMBINING_CLASS_ABOVE_LEFT;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC26: /* point varika */
- return HB_UNICODE_COMBINING_CLASS_ABOVE;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC21: /* dagesh */
- break;
-
-
- /* Arabic and Syriac */
-
- case HB_MODIFIED_COMBINING_CLASS_CCC27: /* fathatan */
- case HB_MODIFIED_COMBINING_CLASS_CCC28: /* dammatan */
- case HB_MODIFIED_COMBINING_CLASS_CCC30: /* fatha */
- case HB_MODIFIED_COMBINING_CLASS_CCC31: /* damma */
- case HB_MODIFIED_COMBINING_CLASS_CCC33: /* shadda */
- case HB_MODIFIED_COMBINING_CLASS_CCC34: /* sukun */
- case HB_MODIFIED_COMBINING_CLASS_CCC35: /* superscript alef */
- case HB_MODIFIED_COMBINING_CLASS_CCC36: /* superscript alaph */
- return HB_UNICODE_COMBINING_CLASS_ABOVE;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC29: /* kasratan */
- case HB_MODIFIED_COMBINING_CLASS_CCC32: /* kasra */
- return HB_UNICODE_COMBINING_CLASS_BELOW;
-
-
- /* Thai */
-
- case HB_MODIFIED_COMBINING_CLASS_CCC103: /* sara u / sara uu */
- return HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC107: /* mai */
- return HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT;
-
-
- /* Lao */
-
- case HB_MODIFIED_COMBINING_CLASS_CCC118: /* sign u / sign uu */
- return HB_UNICODE_COMBINING_CLASS_BELOW;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC122: /* mai */
- return HB_UNICODE_COMBINING_CLASS_ABOVE;
-
-
- /* Tibetan */
-
- case HB_MODIFIED_COMBINING_CLASS_CCC129: /* sign aa */
- return HB_UNICODE_COMBINING_CLASS_BELOW;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC130: /* sign i*/
- return HB_UNICODE_COMBINING_CLASS_ABOVE;
-
- case HB_MODIFIED_COMBINING_CLASS_CCC132: /* sign u */
- return HB_UNICODE_COMBINING_CLASS_BELOW;
-
- }
-
- return klass;
-}
-
-void
-_hb_ot_shape_fallback_position_recategorize_marks (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer)
-{
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- if (_hb_glyph_info_get_general_category (&buffer->info[i]) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) {
- unsigned int combining_class = _hb_glyph_info_get_modified_combining_class (&buffer->info[i]);
- combining_class = recategorize_combining_class (buffer->info[i].codepoint, combining_class);
- _hb_glyph_info_set_modified_combining_class (&buffer->info[i], combining_class);
- }
-}
-
-
-static void
-zero_mark_advances (hb_buffer_t *buffer,
- unsigned int start,
- unsigned int end)
-{
- for (unsigned int i = start; i < end; i++)
- if (_hb_glyph_info_get_general_category (&buffer->info[i]) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)
- {
- buffer->pos[i].x_advance = 0;
- buffer->pos[i].y_advance = 0;
- }
-}
-
-static inline void
-position_mark (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer,
- hb_glyph_extents_t &base_extents,
- unsigned int i,
- unsigned int combining_class)
-{
- hb_glyph_extents_t mark_extents;
- if (!font->get_glyph_extents (buffer->info[i].codepoint,
- &mark_extents))
- return;
-
- hb_position_t y_gap = font->y_scale / 16;
-
- hb_glyph_position_t &pos = buffer->pos[i];
- pos.x_offset = pos.y_offset = 0;
-
-
- /* We dont position LEFT and RIGHT marks. */
-
- /* X positioning */
- switch (combining_class)
- {
- case HB_UNICODE_COMBINING_CLASS_DOUBLE_BELOW:
- case HB_UNICODE_COMBINING_CLASS_DOUBLE_ABOVE:
- if (buffer->props.direction == HB_DIRECTION_LTR) {
- pos.x_offset += base_extents.x_bearing - mark_extents.width / 2 - mark_extents.x_bearing;
- break;
- } else if (buffer->props.direction == HB_DIRECTION_RTL) {
- pos.x_offset += base_extents.x_bearing + base_extents.width - mark_extents.width / 2 - mark_extents.x_bearing;
- break;
- }
- /* Fall through */
-
- default:
- case HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW:
- case HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE:
- case HB_UNICODE_COMBINING_CLASS_BELOW:
- case HB_UNICODE_COMBINING_CLASS_ABOVE:
- /* Center align. */
- pos.x_offset += base_extents.x_bearing + (base_extents.width - mark_extents.width) / 2 - mark_extents.x_bearing;
- break;
-
- case HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW_LEFT:
- case HB_UNICODE_COMBINING_CLASS_BELOW_LEFT:
- case HB_UNICODE_COMBINING_CLASS_ABOVE_LEFT:
- /* Left align. */
- pos.x_offset += base_extents.x_bearing - mark_extents.x_bearing;
- break;
-
- case HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE_RIGHT:
- case HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT:
- case HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT:
- /* Right align. */
- pos.x_offset += base_extents.x_bearing + base_extents.width - mark_extents.width - mark_extents.x_bearing;
- break;
- }
-
- /* Y positioning */
- switch (combining_class)
- {
- case HB_UNICODE_COMBINING_CLASS_DOUBLE_BELOW:
- case HB_UNICODE_COMBINING_CLASS_BELOW_LEFT:
- case HB_UNICODE_COMBINING_CLASS_BELOW:
- case HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT:
- /* Add gap, fall-through. */
- base_extents.height -= y_gap;
-
- case HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW_LEFT:
- case HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW:
- pos.y_offset += base_extents.y_bearing + base_extents.height - mark_extents.y_bearing;
- base_extents.height += mark_extents.height;
- break;
-
- case HB_UNICODE_COMBINING_CLASS_DOUBLE_ABOVE:
- case HB_UNICODE_COMBINING_CLASS_ABOVE_LEFT:
- case HB_UNICODE_COMBINING_CLASS_ABOVE:
- case HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT:
- /* Add gap, fall-through. */
- base_extents.y_bearing += y_gap;
- base_extents.height -= y_gap;
-
- case HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE:
- case HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE_RIGHT:
- pos.y_offset += base_extents.y_bearing - (mark_extents.y_bearing + mark_extents.height);
- base_extents.y_bearing -= mark_extents.height;
- base_extents.height += mark_extents.height;
- break;
- }
-}
-
-static inline void
-position_around_base (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer,
- unsigned int base,
- unsigned int end)
-{
- hb_direction_t horiz_dir = HB_DIRECTION_INVALID;
- hb_glyph_extents_t base_extents;
- if (!font->get_glyph_extents (buffer->info[base].codepoint,
- &base_extents))
- {
- /* If extents don't work, zero marks and go home. */
- zero_mark_advances (buffer, base + 1, end);
- return;
- }
- base_extents.x_bearing += buffer->pos[base].x_offset;
- base_extents.y_bearing += buffer->pos[base].y_offset;
-
- unsigned int lig_id = get_lig_id (buffer->info[base]);
- unsigned int num_lig_components = get_lig_num_comps (buffer->info[base]);
-
- hb_position_t x_offset = 0, y_offset = 0;
- if (HB_DIRECTION_IS_FORWARD (buffer->props.direction)) {
- x_offset -= buffer->pos[base].x_advance;
- y_offset -= buffer->pos[base].y_advance;
- }
-
- hb_glyph_extents_t component_extents = base_extents;
- unsigned int last_lig_component = (unsigned int) -1;
- unsigned int last_combining_class = 255;
- hb_glyph_extents_t cluster_extents = base_extents; /* Initialization is just to shut gcc up. */
- for (unsigned int i = base + 1; i < end; i++)
- if (_hb_glyph_info_get_modified_combining_class (&buffer->info[i]))
- {
- if (num_lig_components > 1) {
- unsigned int this_lig_id = get_lig_id (buffer->info[i]);
- unsigned int this_lig_component = get_lig_comp (buffer->info[i]) - 1;
- /* Conditions for attaching to the last component. */
- if (!lig_id || lig_id != this_lig_id || this_lig_component >= num_lig_components)
- this_lig_component = num_lig_components - 1;
- if (last_lig_component != this_lig_component)
- {
- last_lig_component = this_lig_component;
- last_combining_class = 255;
- component_extents = base_extents;
- if (unlikely (horiz_dir == HB_DIRECTION_INVALID)) {
- if (HB_DIRECTION_IS_HORIZONTAL (plan->props.direction))
- horiz_dir = plan->props.direction;
- else
- horiz_dir = hb_script_get_horizontal_direction (plan->props.script);
- }
- if (horiz_dir == HB_DIRECTION_LTR)
- component_extents.x_bearing += (this_lig_component * component_extents.width) / num_lig_components;
- else
- component_extents.x_bearing += ((num_lig_components - 1 - this_lig_component) * component_extents.width) / num_lig_components;
- component_extents.width /= num_lig_components;
- }
- }
-
- unsigned int this_combining_class = _hb_glyph_info_get_modified_combining_class (&buffer->info[i]);
- if (last_combining_class != this_combining_class)
- {
- last_combining_class = this_combining_class;
- cluster_extents = component_extents;
- }
-
- position_mark (plan, font, buffer, cluster_extents, i, this_combining_class);
-
- buffer->pos[i].x_advance = 0;
- buffer->pos[i].y_advance = 0;
- buffer->pos[i].x_offset += x_offset;
- buffer->pos[i].y_offset += y_offset;
-
- } else {
- if (HB_DIRECTION_IS_FORWARD (buffer->props.direction)) {
- x_offset -= buffer->pos[i].x_advance;
- y_offset -= buffer->pos[i].y_advance;
- } else {
- x_offset += buffer->pos[i].x_advance;
- y_offset += buffer->pos[i].y_advance;
- }
- }
-}
-
-static inline void
-position_cluster (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer,
- unsigned int start,
- unsigned int end)
-{
- if (end - start < 2)
- return;
-
- /* Find the base glyph */
- for (unsigned int i = start; i < end; i++)
- if (!HB_UNICODE_GENERAL_CATEGORY_IS_MARK (_hb_glyph_info_get_general_category (&buffer->info[i])))
- {
- /* Find mark glyphs */
- unsigned int j;
- for (j = i + 1; j < end; j++)
- if (!HB_UNICODE_GENERAL_CATEGORY_IS_MARK (_hb_glyph_info_get_general_category (&buffer->info[j])))
- break;
-
- position_around_base (plan, font, buffer, i, j);
-
- i = j - 1;
- }
-}
-
-void
-_hb_ot_shape_fallback_position (const hb_ot_shape_plan_t *plan,
- hb_font_t *font,
- hb_buffer_t *buffer)
-{
- unsigned int start = 0;
- unsigned int last_cluster = buffer->info[0].cluster;
- unsigned int count = buffer->len;
- for (unsigned int i = 1; i < count; i++)
- if (buffer->info[i].cluster != last_cluster) {
- position_cluster (plan, font, buffer, start, i);
- start = i;
- last_cluster = buffer->info[i].cluster;
- }
- position_cluster (plan, font, buffer, start, count);
-}