/*
- * Copyright (C) 1998-2004 David Turner and Werner Lemberg
- * Copyright (C) 2006 Behdad Esfahbod
- * Copyright (C) 2007,2008,2009 Red Hat, Inc.
+ * Copyright © 1998-2004 David Turner and Werner Lemberg
+ * Copyright © 2006 Behdad Esfahbod
+ * Copyright © 2007,2008,2009 Red Hat, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Red Hat Author(s): Behdad Esfahbod
*/
-#define HB_OT_LAYOUT_CC
-
#include "hb-ot-layout-private.hh"
-#include "hb-ot-layout-gdef-private.hh"
-#include "hb-ot-layout-gsub-private.hh"
-#include "hb-ot-layout-gpos-private.hh"
+#include "hb-ot-layout-gdef-table.hh"
+#include "hb-ot-layout-gsub-table.hh"
+#include "hb-ot-layout-gpos-table.hh"
+#include "hb-ot-maxp-table.hh"
#include <stdlib.h>
#include <string.h>
-HB_BEGIN_DECLS
hb_ot_layout_t *
-_hb_ot_layout_new (hb_face_t *face)
+_hb_ot_layout_create (hb_face_t *face)
{
- /* Remove this object altogether */
+ /* TODO Remove this object altogether */
hb_ot_layout_t *layout = (hb_ot_layout_t *) calloc (1, sizeof (hb_ot_layout_t));
- layout->gdef_blob = Sanitizer<GDEF>::sanitize (hb_face_get_table (face, HB_OT_TAG_GDEF));
+ layout->gdef_blob = Sanitizer<GDEF>::sanitize (hb_face_reference_table (face, HB_OT_TAG_GDEF));
layout->gdef = Sanitizer<GDEF>::lock_instance (layout->gdef_blob);
- layout->gsub_blob = Sanitizer<GSUB>::sanitize (hb_face_get_table (face, HB_OT_TAG_GSUB));
+ layout->gsub_blob = Sanitizer<GSUB>::sanitize (hb_face_reference_table (face, HB_OT_TAG_GSUB));
layout->gsub = Sanitizer<GSUB>::lock_instance (layout->gsub_blob);
- layout->gpos_blob = Sanitizer<GPOS>::sanitize (hb_face_get_table (face, HB_OT_TAG_GPOS));
+ layout->gpos_blob = Sanitizer<GPOS>::sanitize (hb_face_reference_table (face, HB_OT_TAG_GPOS));
layout->gpos = Sanitizer<GPOS>::lock_instance (layout->gpos_blob);
return layout;
}
void
-_hb_ot_layout_free (hb_ot_layout_t *layout)
+_hb_ot_layout_destroy (hb_ot_layout_t *layout)
{
- hb_blob_unlock (layout->gdef_blob);
- hb_blob_unlock (layout->gsub_blob);
- hb_blob_unlock (layout->gpos_blob);
-
hb_blob_destroy (layout->gdef_blob);
hb_blob_destroy (layout->gsub_blob);
hb_blob_destroy (layout->gpos_blob);
- free (layout->new_gdef.klasses);
-
free (layout);
}
-static const GDEF&
+static inline const GDEF&
_get_gdef (hb_face_t *face)
{
return likely (face->ot_layout && face->ot_layout->gdef) ? *face->ot_layout->gdef : Null(GDEF);
}
-
-static const GSUB&
+static inline const GSUB&
_get_gsub (hb_face_t *face)
{
return likely (face->ot_layout && face->ot_layout->gsub) ? *face->ot_layout->gsub : Null(GSUB);
}
-
-static const GPOS&
+static inline const GPOS&
_get_gpos (hb_face_t *face)
{
return likely (face->ot_layout && face->ot_layout->gpos) ? *face->ot_layout->gpos : Null(GPOS);
* GDEF
*/
-/* TODO the public class_t is a mess */
-
hb_bool_t
hb_ot_layout_has_glyph_classes (hb_face_t *face)
{
return _get_gdef (face).has_glyph_classes ();
}
-hb_bool_t
-_hb_ot_layout_has_new_glyph_classes (hb_face_t *face)
-{
- return face->ot_layout->new_gdef.len > 0;
-}
-
-static unsigned int
-_hb_ot_layout_get_glyph_property (hb_face_t *face,
- hb_codepoint_t glyph)
+unsigned int
+_hb_ot_layout_get_glyph_property (hb_face_t *face,
+ hb_glyph_info_t *info)
{
- hb_ot_layout_class_t klass;
- const GDEF &gdef = _get_gdef (face);
-
- klass = gdef.get_glyph_class (glyph);
-
- if (!klass && glyph < face->ot_layout->new_gdef.len)
- klass = face->ot_layout->new_gdef.klasses[glyph];
-
- switch (klass) {
- default:
- case GDEF::UnclassifiedGlyph: return HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED;
- case GDEF::BaseGlyph: return HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH;
- case GDEF::LigatureGlyph: return HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE;
- case GDEF::ComponentGlyph: return HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT;
- case GDEF::MarkGlyph:
- klass = gdef.get_mark_attachment_type (glyph);
- return HB_OT_LAYOUT_GLYPH_CLASS_MARK + (klass << 8);
+ if (!info->props_cache())
+ {
+ const GDEF &gdef = _get_gdef (face);
+ info->props_cache() = gdef.get_glyph_props (info->codepoint);
}
+
+ return info->props_cache();
}
-hb_bool_t
-_hb_ot_layout_check_glyph_property (hb_face_t *face,
- hb_internal_glyph_info_t *ginfo,
- unsigned int lookup_flags,
- unsigned int *property_out)
+static hb_bool_t
+_hb_ot_layout_match_properties (hb_face_t *face,
+ hb_codepoint_t codepoint,
+ unsigned int glyph_props,
+ unsigned int lookup_props)
{
- unsigned int property;
-
- if (ginfo->gproperty == HB_BUFFER_GLYPH_PROPERTIES_UNKNOWN)
- ginfo->gproperty = _hb_ot_layout_get_glyph_property (face, ginfo->codepoint);
- property = ginfo->gproperty;
- if (property_out)
- *property_out = property;
-
/* Not covered, if, for example, glyph class is ligature and
- * lookup_flags includes LookupFlags::IgnoreLigatures
+ * lookup_props includes LookupFlags::IgnoreLigatures
*/
- if (property & lookup_flags & LookupFlag::IgnoreFlags)
+ if (glyph_props & lookup_props & LookupFlag::IgnoreFlags)
return false;
- if (property & HB_OT_LAYOUT_GLYPH_CLASS_MARK)
+ if (glyph_props & HB_OT_LAYOUT_GLYPH_CLASS_MARK)
{
/* If using mark filtering sets, the high short of
- * lookup_flags has the set index.
+ * lookup_props has the set index.
*/
- if (lookup_flags & LookupFlag::UseMarkFilteringSet)
- return _get_gdef (face).mark_set_covers (lookup_flags >> 16, ginfo->codepoint);
+ if (lookup_props & LookupFlag::UseMarkFilteringSet)
+ return _get_gdef (face).mark_set_covers (lookup_props >> 16, codepoint);
- /* The second byte of lookup_flags has the meaning
+ /* The second byte of lookup_props has the meaning
* "ignore marks of attachment type different than
* the attachment type specified."
*/
- if (lookup_flags & LookupFlag::MarkAttachmentType && property & LookupFlag::MarkAttachmentType)
- return (lookup_flags & LookupFlag::MarkAttachmentType) == (property & LookupFlag::MarkAttachmentType);
+ if (lookup_props & LookupFlag::MarkAttachmentType && glyph_props & LookupFlag::MarkAttachmentType)
+ return (lookup_props & LookupFlag::MarkAttachmentType) == (glyph_props & LookupFlag::MarkAttachmentType);
}
return true;
}
hb_bool_t
-_hb_ot_layout_skip_mark (hb_face_t *face,
- hb_internal_glyph_info_t *ginfo,
- unsigned int lookup_flags,
- unsigned int *property_out)
+_hb_ot_layout_check_glyph_property (hb_face_t *face,
+ hb_glyph_info_t *ginfo,
+ unsigned int lookup_props,
+ unsigned int *property_out)
{
unsigned int property;
- if (ginfo->gproperty == HB_BUFFER_GLYPH_PROPERTIES_UNKNOWN)
- ginfo->gproperty = _hb_ot_layout_get_glyph_property (face, ginfo->codepoint);
- property = ginfo->gproperty;
- if (property_out)
- *property_out = property;
-
- if (property & HB_OT_LAYOUT_GLYPH_CLASS_MARK)
- {
- /* Skip mark if lookup_flags includes LookupFlags::IgnoreMarks */
- if (lookup_flags & LookupFlag::IgnoreMarks)
- return true;
+ property = _hb_ot_layout_get_glyph_property (face, ginfo);
+ (void) (property_out && (*property_out = property));
- /* If using mark filtering sets, the high short of lookup_flags has the set index. */
- if (lookup_flags & LookupFlag::UseMarkFilteringSet)
- return !_get_gdef (face).mark_set_covers (lookup_flags >> 16, ginfo->codepoint);
-
- /* The second byte of lookup_flags has the meaning "ignore marks of attachment type
- * different than the attachment type specified." */
- if (lookup_flags & LookupFlag::MarkAttachmentType && property & LookupFlag::MarkAttachmentType)
- return (lookup_flags & LookupFlag::MarkAttachmentType) != (property & LookupFlag::MarkAttachmentType);
- }
-
- return false;
+ return _hb_ot_layout_match_properties (face, ginfo->codepoint, property, lookup_props);
}
-void
-_hb_ot_layout_set_glyph_class (hb_face_t *face,
- hb_codepoint_t glyph,
- hb_ot_layout_glyph_class_t klass)
+hb_bool_t
+_hb_ot_layout_skip_mark (hb_face_t *face,
+ hb_glyph_info_t *ginfo,
+ unsigned int lookup_props,
+ unsigned int *property_out)
{
- if (HB_OBJECT_IS_INERT (face))
- return;
-
- /* TODO optimize this? similar to old harfbuzz code for example */
-
- hb_ot_layout_t *layout = face->ot_layout;
- hb_ot_layout_class_t gdef_klass;
- unsigned int len = layout->new_gdef.len;
-
- if (unlikely (glyph > 65535))
- return;
-
- /* XXX this is not threadsafe */
- if (glyph >= len) {
- unsigned int new_len;
- unsigned char *new_klasses;
-
- new_len = len == 0 ? 120 : 2 * len;
- while (new_len <= glyph)
- new_len *= 2;
-
- if (new_len > 65536)
- new_len = 65536;
- new_klasses = (unsigned char *) realloc (layout->new_gdef.klasses, new_len * sizeof (unsigned char));
-
- if (unlikely (!new_klasses))
- return;
-
- memset (new_klasses + len, 0, new_len - len);
-
- layout->new_gdef.klasses = new_klasses;
- layout->new_gdef.len = new_len;
- }
-
- switch (klass) {
- default:
- case HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED: gdef_klass = GDEF::UnclassifiedGlyph; break;
- case HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH: gdef_klass = GDEF::BaseGlyph; break;
- case HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE: gdef_klass = GDEF::LigatureGlyph; break;
- case HB_OT_LAYOUT_GLYPH_CLASS_MARK: gdef_klass = GDEF::MarkGlyph; break;
- case HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT: gdef_klass = GDEF::ComponentGlyph; break;
- }
-
- layout->new_gdef.klasses[glyph] = gdef_klass;
- return;
-}
-
-void
-_hb_ot_layout_set_glyph_property (hb_face_t *face,
- hb_codepoint_t glyph,
- unsigned int property)
-{ _hb_ot_layout_set_glyph_class (face, glyph, (hb_ot_layout_glyph_class_t) (property & 0xff)); }
+ unsigned int property;
+ property = _hb_ot_layout_get_glyph_property (face, ginfo);
+ (void) (property_out && (*property_out = property));
-hb_ot_layout_glyph_class_t
-hb_ot_layout_get_glyph_class (hb_face_t *face,
- hb_codepoint_t glyph)
-{
- return (hb_ot_layout_glyph_class_t) (_hb_ot_layout_get_glyph_property (face, glyph) & 0xff);
-}
+ /* If it's a mark, skip it we don't accept it. */
+ if (unlikely (property & HB_OT_LAYOUT_GLYPH_CLASS_MARK))
+ return !_hb_ot_layout_match_properties (face, ginfo->codepoint, property, lookup_props);
-void
-hb_ot_layout_set_glyph_class (hb_face_t *face,
- hb_codepoint_t glyph,
- hb_ot_layout_glyph_class_t klass)
-{
- _hb_ot_layout_set_glyph_class (face, glyph, klass);
+ /* If not a mark, don't skip. */
+ return false;
}
-void
-hb_ot_layout_build_glyph_classes (hb_face_t *face,
- hb_codepoint_t *glyphs,
- unsigned char *klasses,
- uint16_t count)
-{
- if (HB_OBJECT_IS_INERT (face))
- return;
-
- hb_ot_layout_t *layout = face->ot_layout;
- if (unlikely (!count || !glyphs || !klasses))
- return;
-
- if (layout->new_gdef.len == 0) {
- layout->new_gdef.klasses = (unsigned char *) calloc (count, sizeof (unsigned char));
- layout->new_gdef.len = count;
- }
-
- for (unsigned int i = 0; i < count; i++)
- _hb_ot_layout_set_glyph_class (face, glyphs[i], (hb_ot_layout_glyph_class_t) klasses[i]);
-}
unsigned int
hb_ot_layout_get_attach_points (hb_face_t *face,
unsigned int
hb_ot_layout_get_ligature_carets (hb_font_t *font,
- hb_face_t *face,
hb_direction_t direction,
hb_codepoint_t glyph,
unsigned int start_offset,
unsigned int *caret_count /* IN/OUT */,
int *caret_array /* OUT */)
{
- hb_ot_layout_context_t c;
- c.font = font;
- c.face = face;
- return _get_gdef (face).get_lig_carets (&c, direction, glyph, start_offset, caret_count, caret_array);
+ return _get_gdef (font->face).get_lig_carets (font, direction, glyph, start_offset, caret_count, caret_array);
}
/*
const GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
if (g.find_script_index (script_tag, script_index))
- return TRUE;
+ return true;
/* try finding 'DFLT' */
if (g.find_script_index (HB_OT_TAG_DEFAULT_SCRIPT, script_index))
- return FALSE;
+ return false;
/* try with 'dflt'; MS site has had typos and many fonts use it now :(.
* including many versions of DejaVu Sans Mono! */
if (g.find_script_index (HB_OT_TAG_DEFAULT_LANGUAGE, script_index))
- return FALSE;
+ return false;
if (script_index) *script_index = HB_OT_LAYOUT_NO_SCRIPT_INDEX;
- return FALSE;
+ return false;
}
hb_bool_t
hb_ot_layout_table_choose_script (hb_face_t *face,
hb_tag_t table_tag,
const hb_tag_t *script_tags,
- unsigned int *script_index)
+ unsigned int *script_index,
+ hb_tag_t *chosen_script)
{
ASSERT_STATIC (Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_SCRIPT_INDEX);
const GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
while (*script_tags)
{
- if (g.find_script_index (*script_tags, script_index))
- return TRUE;
+ if (g.find_script_index (*script_tags, script_index)) {
+ if (chosen_script)
+ *chosen_script = *script_tags;
+ return true;
+ }
script_tags++;
}
/* try finding 'DFLT' */
- if (g.find_script_index (HB_OT_TAG_DEFAULT_SCRIPT, script_index))
- return FALSE;
+ if (g.find_script_index (HB_OT_TAG_DEFAULT_SCRIPT, script_index)) {
+ if (chosen_script)
+ *chosen_script = HB_OT_TAG_DEFAULT_SCRIPT;
+ return false;
+ }
/* try with 'dflt'; MS site has had typos and many fonts use it now :( */
- if (g.find_script_index (HB_OT_TAG_DEFAULT_LANGUAGE, script_index))
- return FALSE;
+ if (g.find_script_index (HB_OT_TAG_DEFAULT_LANGUAGE, script_index)) {
+ if (chosen_script)
+ *chosen_script = HB_OT_TAG_DEFAULT_LANGUAGE;
+ return false;
+ }
+
+ /* try with 'latn'; some old fonts put their features there even though
+ they're really trying to support Thai, for example :( */
+#define HB_OT_TAG_LATIN_SCRIPT HB_TAG ('l', 'a', 't', 'n')
+ if (g.find_script_index (HB_OT_TAG_LATIN_SCRIPT, script_index)) {
+ if (chosen_script)
+ *chosen_script = HB_OT_TAG_LATIN_SCRIPT;
+ return false;
+ }
if (script_index) *script_index = HB_OT_LAYOUT_NO_SCRIPT_INDEX;
- return FALSE;
+ if (chosen_script)
+ *chosen_script = HB_OT_LAYOUT_NO_SCRIPT_INDEX;
+ return false;
}
unsigned int
const Script &s = get_gsubgpos_table (face, table_tag).get_script (script_index);
if (s.find_lang_sys_index (language_tag, language_index))
- return TRUE;
+ return true;
/* try with 'dflt'; MS site has had typos and many fonts use it now :( */
if (s.find_lang_sys_index (HB_OT_TAG_DEFAULT_LANGUAGE, language_index))
- return FALSE;
+ return false;
if (language_index) *language_index = HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX;
- return FALSE;
+ return false;
}
hb_bool_t
if (feature_tag == g.get_feature_tag (f_index)) {
if (feature_index) *feature_index = f_index;
- return TRUE;
+ return true;
}
}
if (feature_index) *feature_index = HB_OT_LAYOUT_NO_FEATURE_INDEX;
- return FALSE;
+ return false;
}
unsigned int
return &_get_gsub (face) != &Null(GSUB);
}
+void
+hb_ot_layout_substitute_start (hb_buffer_t *buffer)
+{
+ GSUB::substitute_start (buffer);
+}
+
hb_bool_t
hb_ot_layout_substitute_lookup (hb_face_t *face,
hb_buffer_t *buffer,
unsigned int lookup_index,
hb_mask_t mask)
{
- hb_ot_layout_context_t c;
- c.font = NULL;
- c.face = face;
- return _get_gsub (face).substitute_lookup (&c, buffer, lookup_index, mask);
+ hb_apply_context_t c (NULL, face, buffer, mask);
+ return _get_gsub (face).substitute_lookup (&c, lookup_index);
+}
+
+void
+hb_ot_layout_substitute_finish (hb_buffer_t *buffer HB_UNUSED)
+{
+ GSUB::substitute_finish (buffer);
}
+void
+hb_ot_layout_substitute_closure_lookup (hb_face_t *face,
+ hb_set_t *glyphs,
+ unsigned int lookup_index)
+{
+ hb_closure_context_t c (face, glyphs);
+ _get_gsub (face).closure_lookup (&c, lookup_index);
+}
/*
* GPOS
return &_get_gpos (face) != &Null(GPOS);
}
+void
+hb_ot_layout_position_start (hb_buffer_t *buffer)
+{
+ GPOS::position_start (buffer);
+}
+
hb_bool_t
hb_ot_layout_position_lookup (hb_font_t *font,
- hb_face_t *face,
hb_buffer_t *buffer,
unsigned int lookup_index,
hb_mask_t mask)
{
- hb_ot_layout_context_t c;
- c.font = font;
- c.face = face;
- return _get_gpos (face).position_lookup (&c, buffer, lookup_index, mask);
+ hb_apply_context_t c (font, font->face, buffer, mask);
+ return _get_gpos (font->face).position_lookup (&c, lookup_index);
}
void
-hb_ot_layout_position_finish (hb_font_t *font HB_UNUSED,
- hb_face_t *face HB_UNUSED,
- hb_buffer_t *buffer)
+hb_ot_layout_position_finish (hb_buffer_t *buffer)
{
- unsigned int i, j;
- unsigned int len = hb_buffer_get_length (buffer);
- hb_internal_glyph_position_t *pos = (hb_internal_glyph_position_t *) hb_buffer_get_glyph_positions (buffer);
- hb_direction_t direction = buffer->props.direction;
-
- /* TODO: Vertical */
-
- /* Handle cursive connections:
- * First handle all chain-back connections, then handle all chain-forward connections. */
- if (likely (HB_DIRECTION_IS_HORIZONTAL (direction)))
- {
- for (j = 0; j < len; j++) {
- if (pos[j].cursive_chain < 0)
- pos[j].y_offset += pos[j + pos[j].cursive_chain].y_offset;
- }
- for (i = len; i > 0; i--) {
- j = i - 1;
- if (pos[j].cursive_chain > 0)
- pos[j].y_offset += pos[j + pos[j].cursive_chain].y_offset;
- }
- }
- else
- {
- for (j = 0; j < len; j++) {
- if (pos[j].cursive_chain < 0)
- pos[j].x_offset += pos[j + pos[j].cursive_chain].x_offset;
- }
- for (i = len; i > 0; i--) {
- j = i - 1;
- if (pos[j].cursive_chain > 0)
- pos[j].x_offset += pos[j + pos[j].cursive_chain].x_offset;
- }
- }
-
-
- /* Handle attachments */
- for (i = 0; i < len; i++)
- if (pos[i].back)
- {
- unsigned int back = i - pos[i].back;
- pos[i].back = 0;
- pos[i].x_offset += pos[back].x_offset;
- pos[i].y_offset += pos[back].y_offset;
-
- if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
- for (j = back + 1; j < i + 1; j++) {
- pos[i].x_offset += pos[j].x_advance;
- pos[i].y_offset += pos[j].y_advance;
- }
- else
- for (j = back; j < i; j++) {
- pos[i].x_offset -= pos[j].x_advance;
- pos[i].y_offset -= pos[j].y_advance;
- }
- }
+ GPOS::position_finish (buffer);
}
-HB_END_DECLS
projects / framework / uifw / harfbuzz.git / blobdiff