Behdad Esfahbod
parent
196610ba4c
commit
2014b8d110
|
|
@ -43,6 +43,8 @@ HBSOURCES += \
|
|||
hb-ot-layout-gsubgpos-private.hh \
|
||||
hb-ot-layout-gsub-private.hh \
|
||||
hb-ot-layout-private.h \
|
||||
hb-ot-shape.c \
|
||||
hb-ot-shape-private.h \
|
||||
hb-ot-tag.c \
|
||||
$(NULL)
|
||||
HBHEADERS += \
|
||||
|
|
|
|||
|
|
@ -377,6 +377,34 @@ hb_ot_layout_table_find_script (hb_face_t *face,
|
|||
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)
|
||||
{
|
||||
ASSERT_STATIC (NO_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;
|
||||
script_tags++;
|
||||
}
|
||||
|
||||
/* try finding 'DFLT' */
|
||||
if (g.find_script_index (HB_OT_TAG_DEFAULT_SCRIPT, script_index))
|
||||
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 (script_index) *script_index = HB_OT_LAYOUT_NO_SCRIPT_INDEX;
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
unsigned int
|
||||
hb_ot_layout_table_get_feature_tags (hb_face_t *face,
|
||||
hb_tag_t table_tag,
|
||||
|
|
|
|||
|
|
@ -113,6 +113,13 @@ hb_ot_layout_table_find_script (hb_face_t *face,
|
|||
hb_tag_t script_tag,
|
||||
unsigned int *script_index);
|
||||
|
||||
/* Like find_script, but takes zero-terminated array of scripts to test */
|
||||
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
|
||||
hb_ot_layout_table_get_feature_tags (hb_face_t *face,
|
||||
hb_tag_t table_tag,
|
||||
|
|
|
|||
|
|
@ -0,0 +1,165 @@
|
|||
/*
|
||||
* Copyright (C) 2009 Red Hat, Inc.
|
||||
*
|
||||
* This is part of HarfBuzz, an OpenType Layout engine 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
|
||||
*/
|
||||
|
||||
#include "hb-ot-shape-private.h"
|
||||
|
||||
#include "hb-buffer-private.h"
|
||||
|
||||
#include "hb-ot-layout.h"
|
||||
|
||||
hb_tag_t default_features[] = {
|
||||
/* GSUB */
|
||||
HB_TAG('c','c','m','p'),
|
||||
HB_TAG('l','o','c','l'),
|
||||
HB_TAG('l','i','g','a'),
|
||||
HB_TAG('c','l','i','g'),
|
||||
/* GPOS */
|
||||
HB_TAG('k','e','r','n'),
|
||||
HB_TAG('m','a','r','k'),
|
||||
HB_TAG('m','k','m','k'),
|
||||
};
|
||||
|
||||
|
||||
static void
|
||||
add_feature (hb_face_t *face,
|
||||
hb_tag_t table_tag,
|
||||
unsigned int feature_index,
|
||||
unsigned int *lookups,
|
||||
unsigned int *num_lookups,
|
||||
unsigned int room_lookups)
|
||||
{
|
||||
unsigned int i = room_lookups - *num_lookups;
|
||||
hb_ot_layout_feature_get_lookup_indexes (face, table_tag, feature_index, 0,
|
||||
&i,
|
||||
lookups + *num_lookups);
|
||||
*num_lookups += i;
|
||||
}
|
||||
|
||||
static int
|
||||
cmp_lookups (const void *p1, const void *p2)
|
||||
{
|
||||
unsigned int a = * (const unsigned int *) p1;
|
||||
unsigned int b = * (const unsigned int *) p2;
|
||||
|
||||
return a - b;
|
||||
}
|
||||
|
||||
static void
|
||||
setup_lookups (hb_font_t *font,
|
||||
hb_face_t *face,
|
||||
hb_buffer_t *buffer,
|
||||
hb_feature_t *features,
|
||||
unsigned int num_features,
|
||||
hb_tag_t table_tag,
|
||||
unsigned int *lookups,
|
||||
unsigned int *num_lookups)
|
||||
{
|
||||
unsigned int i, j, script_index, language_index, feature_index, room_lookups;
|
||||
|
||||
room_lookups = *num_lookups;
|
||||
*num_lookups = 0;
|
||||
|
||||
hb_ot_layout_table_choose_script (face, table_tag,
|
||||
hb_ot_tags_from_script (buffer->script),
|
||||
&script_index);
|
||||
hb_ot_layout_script_find_language (face, table_tag, script_index,
|
||||
hb_ot_tag_from_language (buffer->language),
|
||||
&language_index);
|
||||
|
||||
if (hb_ot_layout_language_get_required_feature_index (face, table_tag, script_index, language_index,
|
||||
&feature_index))
|
||||
add_feature (face, table_tag, feature_index, lookups, num_lookups, room_lookups);
|
||||
|
||||
for (i = 0; i < ARRAY_LENGTH (default_features); i++)
|
||||
{
|
||||
if (hb_ot_layout_language_find_feature (face, table_tag, script_index, language_index,
|
||||
default_features[i],
|
||||
&feature_index))
|
||||
add_feature (face, table_tag, feature_index, lookups, num_lookups, room_lookups);
|
||||
}
|
||||
|
||||
qsort (lookups, *num_lookups, sizeof (lookups[0]), cmp_lookups);
|
||||
|
||||
if (*num_lookups)
|
||||
{
|
||||
for (i = 1, j = 0; i < *num_lookups; i++)
|
||||
if (lookups[i] != lookups[j])
|
||||
lookups[++j] = lookups[i];
|
||||
lookups[j++] = lookups[i - 1];
|
||||
*num_lookups = j;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
gboolean
|
||||
_hb_ot_substitute_complex (hb_font_t *font,
|
||||
hb_face_t *face,
|
||||
hb_buffer_t *buffer,
|
||||
hb_feature_t *features,
|
||||
unsigned int num_features)
|
||||
{
|
||||
unsigned int lookups[1000];
|
||||
unsigned int num_lookups = ARRAY_LENGTH (lookups);
|
||||
unsigned int i;
|
||||
|
||||
if (!hb_ot_layout_has_substitution (face))
|
||||
return FALSE;
|
||||
|
||||
setup_lookups (font, face, buffer, features, num_features,
|
||||
HB_OT_TAG_GSUB,
|
||||
lookups, &num_lookups);
|
||||
|
||||
for (i = 0; i < num_lookups; i++)
|
||||
hb_ot_layout_substitute_lookup (face, buffer, lookups[i], 0xFFFF);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
gboolean
|
||||
_hb_ot_position_complex (hb_font_t *font,
|
||||
hb_face_t *face,
|
||||
hb_buffer_t *buffer,
|
||||
hb_feature_t *features,
|
||||
unsigned int num_features)
|
||||
{
|
||||
unsigned int lookups[1000];
|
||||
unsigned int num_lookups = ARRAY_LENGTH (lookups);
|
||||
unsigned int i;
|
||||
|
||||
if (!hb_ot_layout_has_positioning (face))
|
||||
return FALSE;
|
||||
|
||||
setup_lookups (font, face, buffer, features, num_features,
|
||||
HB_OT_TAG_GPOS,
|
||||
lookups, &num_lookups);
|
||||
|
||||
for (i = 0; i < num_lookups; i++)
|
||||
hb_ot_layout_position_lookup (font, face, buffer, lookups[i], 0xFFFF);
|
||||
|
||||
hb_ot_layout_position_finish (font, face, buffer);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
|
@ -30,6 +30,8 @@
|
|||
|
||||
#include "hb-buffer-private.h"
|
||||
|
||||
#include "hb-ot-shape-private.h"
|
||||
|
||||
|
||||
/* Prepare */
|
||||
|
||||
|
|
@ -125,8 +127,7 @@ hb_substitute_complex (hb_font_t *font,
|
|||
hb_feature_t *features,
|
||||
unsigned int num_features)
|
||||
{
|
||||
/* TODO GSUB */
|
||||
return FALSE;
|
||||
return _hb_ot_substitute_complex (font, face, buffer, features, num_features);
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -169,8 +170,7 @@ hb_position_complex (hb_font_t *font,
|
|||
hb_feature_t *features,
|
||||
unsigned int num_features)
|
||||
{
|
||||
/* TODO GPOS */
|
||||
return FALSE;
|
||||
return _hb_ot_position_complex (font, face, buffer, features, num_features);
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
|
|||
Loading…
Reference in New Issue