Behdad Esfahbod
14 years ago
parent
0e6d36d8a3
commit
1f49cf32c9
9 changed files with 542 additions and 18 deletions
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#!/bin/sh |
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LD_LIBRARY_PATH=../../src/.libs PYTHONPATH=build/lib.`python -c 'import distutils.util, sys; print distutils.util.get_platform()+"-"+str(sys.version_info[0])+"."+str(sys.version_info[1])'` "$@" |
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@ -0,0 +1,446 @@ |
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/*
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* Copyright (C) 2011 Martin Hosken |
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* Copyright (C) 2011 SIL International |
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* |
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* This is part of HarfBuzz, a text shaping library. |
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* |
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* Permission is hereby granted, without written agreement and without |
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* license or royalty fees, to use, copy, modify, and distribute this |
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* software and its documentation for any purpose, provided that the |
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* above copyright notice and the following two paragraphs appear in |
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* all copies of this software. |
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* |
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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* DAMAGE. |
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* |
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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*/ |
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#include "hb-private.hh" |
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#include "hb-buffer-private.hh" |
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#include "hb-font-private.hh" |
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#include "hb-ot-tag.h" |
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#include <graphite2/Font.h> |
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#include <graphite2/Segment.h> |
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#include "hb-graphite2.h" |
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#include <stdlib.h> |
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#include <string.h> |
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HB_BEGIN_DECLS |
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typedef struct hbgr_tablelist_t { |
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hb_blob_t *blob; |
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struct hbgr_tablelist_t *next; |
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unsigned int tag; |
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} hbgr_tablelist_t; |
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typedef struct hbgr_face_t { |
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gr_face *grface; |
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hbgr_tablelist_t *tlist; |
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hb_destroy_func_t destroy; |
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hb_reference_table_func_t get_table; |
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hb_face_t *face; |
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void *data; |
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} hbgr_face_t; |
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typedef struct hbgr_font_t { |
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gr_font *grfont; |
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hb_face_t *face; |
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hb_font_t *font; |
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hb_destroy_func_t destroy; |
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hb_font_funcs_t *klass; |
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void *data; |
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} hbgr_font_t; |
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typedef struct hbgr_cluster_t { |
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unsigned int base_char; |
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unsigned int num_chars; |
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unsigned int base_glyph; |
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unsigned int num_glyphs; |
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} hbgr_cluster_t; |
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static const void *hbgr_get_table(const void *face, unsigned int tag, size_t *len); |
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static float hbgr_get_advance(const void *font, unsigned short gid); |
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static void hbgr_face_destroy(void *data); |
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static hb_blob_t *hbgr_face_get_table(hb_face_t *face, hb_tag_t tag, void *data); |
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static void hbgr_font_destroy(void *data); |
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/* static hb_codepoint_t hbgr_font_get_glyph (hb_font_t *font, hb_face_t *face, const void *user_data, hb_codepoint_t unicode, hb_codepoint_t variation_selector);
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static void hbgr_font_get_glyph_advance (hb_font_t *font, hb_face_t *face, const void *user_data, hb_codepoint_t glyph, hb_position_t *x_advance, hb_position_t *y_advance); |
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static void hbgr_font_get_glyph_extents (hb_font_t *font, hb_face_t *face, const void *user_data, hb_codepoint_t glyph, hb_glyph_extents_t *extents); |
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static hb_bool_t hbgr_font_get_contour_point (hb_font_t *font, hb_face_t *face, const void *user_data, unsigned int point_index, hb_codepoint_t glyph, hb_position_t *x, hb_position_t *y); |
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static hb_position_t hbgr_font_get_kerning (hb_font_t *font, hb_face_t *face, const void *user_data, hb_codepoint_t first_glyph, hb_codepoint_t second_glyph); |
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*/ |
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static const void *hbgr_get_table(const void *data, unsigned int tag, size_t *len) |
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{ |
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const void *res; |
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hbgr_tablelist_t *pl, *p; |
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hbgr_face_t *face = (hbgr_face_t *)data; |
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hbgr_tablelist_t *tlist = face->tlist; |
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for (p = tlist; p; p = p->next) |
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if (p->tag == tag) |
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return hb_blob_get_data(p->blob, (unsigned int *)len); |
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else |
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pl = p; |
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hb_blob_t *blob = face->get_table(face->face, tag, face->data); |
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if (pl->blob) |
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{ |
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p = (hbgr_tablelist_t *)malloc(sizeof(hbgr_tablelist_t)); |
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if (!p) |
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{ |
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hb_blob_destroy(blob); |
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return NULL; |
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} |
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p->next = NULL; |
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pl->next = p; |
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pl = p; |
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} |
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pl->blob = blob; |
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pl->tag = tag; |
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return hb_blob_get_data(blob, (unsigned int *)len); |
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} |
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static float hbgr_get_advance(const void *dat, unsigned short gid) |
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{ |
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hbgr_font_t *font = (hbgr_font_t *)dat; |
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return (float)(font->klass->get.glyph_h_advance(font->font, font->data, gid, font->klass->user_data.glyph_h_advance)); |
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} |
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static void hbgr_face_destroy(void *data) |
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{ |
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hbgr_face_t *fcomp = (hbgr_face_t *)data; |
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hbgr_tablelist_t *tlist = fcomp->tlist; |
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while (tlist) |
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{ |
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hbgr_tablelist_t *old = tlist; |
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hb_blob_destroy(tlist->blob); |
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tlist = tlist->next; |
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free(old); |
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} |
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fcomp->destroy(fcomp->data); |
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gr_face_destroy(fcomp->grface); |
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} |
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static hb_blob_t *hbgr_face_get_table(hb_face_t *face, hb_tag_t tag, void *data) |
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{ |
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hbgr_face_t *fcomp = (hbgr_face_t *)data; |
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return fcomp->get_table(fcomp->face, tag, fcomp->data); |
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} |
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static void hbgr_font_destroy(void *data) |
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{ |
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hbgr_font_t *fcomp = (hbgr_font_t *)data; |
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fcomp->destroy(fcomp->data); |
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gr_font_destroy(fcomp->grfont); |
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} |
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static hb_bool_t hbgr_font_get_glyph (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t unicode, |
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hb_codepoint_t variation_selector, |
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hb_codepoint_t *glyph, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph(((hbgr_font_t *)font)->font, font_data, unicode, variation_selector, glyph, user_data); |
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} |
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static hb_bool_t hbgr_font_get_glyph_h_advance (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t glyph, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph_h_advance(((hbgr_font_t *)font)->font, font_data, glyph, user_data); |
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} |
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static hb_position_t hbgr_font_get_glyph_v_advance (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t glyph, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph_v_advance(((hbgr_font_t *)font)->font, font_data, glyph, user_data); |
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} |
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static hb_bool_t hbgr_font_get_glyph_h_origin (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t glyph, |
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hb_position_t *x, |
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hb_position_t *y, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph_h_origin(((hbgr_font_t *)font)->font, font_data, glyph, x, y, user_data); |
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} |
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static hb_bool_t hbgr_font_get_glyph_v_origin (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t glyph, |
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hb_position_t *x, |
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hb_position_t *y, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph_v_origin(((hbgr_font_t *)font)->font, font_data, glyph, x, y, user_data); |
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} |
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static hb_position_t hbgr_font_get_glyph_h_kerning (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t first_glyph, |
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hb_codepoint_t second_glyph, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph_h_kerning(((hbgr_font_t *)font)->font, font_data, first_glyph, second_glyph, user_data); |
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} |
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static hb_position_t hbgr_font_get_glyph_v_kerning (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t first_glyph, |
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hb_codepoint_t second_glyph, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph_v_kerning(((hbgr_font_t *)font)->font, font_data, first_glyph, second_glyph, user_data); |
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} |
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static hb_bool_t hbgr_font_get_glyph_extents (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t glyph, |
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hb_glyph_extents_t *extents, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph_extents(((hbgr_font_t *)font)->font, font_data, glyph, extents, user_data); |
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} |
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static hb_bool_t hbgr_font_get_glyph_contour_point (hb_font_t *font, |
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void *font_data, |
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hb_codepoint_t glyph, |
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unsigned int point_index, |
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hb_position_t *x, |
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hb_position_t *y, |
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void *user_data) |
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{ |
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return ((hbgr_font_t *)font)->klass->get.glyph_contour_point(((hbgr_font_t *)font)->font, font_data, glyph, point_index, x, y, user_data); |
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} |
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hb_font_funcs_t hbgr_klass = { |
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HB_OBJECT_HEADER_STATIC, |
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TRUE, |
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{ |
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hbgr_font_get_glyph, |
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hbgr_font_get_glyph_h_advance, |
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hbgr_font_get_glyph_v_advance, |
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hbgr_font_get_glyph_h_origin, |
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hbgr_font_get_glyph_v_origin, |
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hbgr_font_get_glyph_h_kerning, |
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hbgr_font_get_glyph_v_kerning, |
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hbgr_font_get_glyph_extents, |
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hbgr_font_get_glyph_contour_point |
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} |
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}; |
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// returns 0 = success, 1 = fallback
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static int hbgr_make_fonts(hb_font_t *font, hb_face_t *face) |
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{ |
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// check face for having already added gr_face (based on destroy fn)
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if (face->destroy != &hbgr_face_destroy) |
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{ |
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hb_blob_t *silf_blob; |
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silf_blob = hb_face_reference_table (font->face, HB_GRAPHITE_TAG_Silf); |
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if (!hb_blob_get_length(silf_blob)) // return as early as possible if no Silf table
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{ |
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hb_blob_destroy(silf_blob); |
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return 1; |
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} |
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hbgr_tablelist_t *flist = (hbgr_tablelist_t *)malloc(sizeof(hbgr_tablelist_t)); |
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hbgr_face_t *fcomp = (hbgr_face_t *)malloc(sizeof(hbgr_face_t)); |
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if (!flist || !fcomp) return 1; |
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flist->next = NULL; |
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flist->tag = 0; |
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flist->blob = NULL; |
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fcomp->tlist = flist; |
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fcomp->get_table = face->reference_table; |
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fcomp->destroy = face->destroy; |
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fcomp->data = face->user_data; |
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fcomp->grface = gr_make_face(fcomp, &hbgr_get_table, gr_face_preloadGlyphs); |
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if (fcomp->grface) |
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{ |
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face->user_data = fcomp; |
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face->reference_table = &hbgr_face_get_table; |
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face->destroy = &hbgr_face_destroy; |
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} |
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else |
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{ |
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free(flist); |
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free(fcomp); |
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return 1; |
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} |
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} |
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// check font for having already added gr_font (based on destroy fn)
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if (font->destroy != &hbgr_font_destroy) |
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{ |
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hbgr_font_t *fcomp = (hbgr_font_t *)malloc(sizeof(hbgr_font_t)); |
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if (fcomp) |
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{ |
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int scale; |
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gr_face *grface = ((hbgr_face_t *)(face->user_data))->grface; |
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hb_font_get_scale(font, &scale, NULL); |
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fcomp->face = face; |
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fcomp->font = font; |
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fcomp->destroy = font->destroy; |
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fcomp->klass = font->klass; |
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fcomp->data = font->user_data; |
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fcomp->grfont = gr_make_font_with_advance_fn(scale, fcomp, &hbgr_get_advance, grface); |
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if (fcomp->grfont) |
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{ |
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font->destroy = &hbgr_font_destroy; |
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font->klass = &hbgr_klass; |
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font->user_data = fcomp; |
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return 0; |
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} |
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} |
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// something went wrong, back out of the whole thing
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hbgr_face_t *facecomp = (hbgr_face_t *)(face->user_data); |
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free(facecomp->tlist); |
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face->reference_table = facecomp->get_table; |
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face->destroy = facecomp->destroy; |
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face->user_data = facecomp->data; |
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free(facecomp); |
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if (fcomp) free(fcomp); |
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return 1; |
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// create gr_font and put into struct along with stuff in font
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// replace font component with struct and fns
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} |
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return 0; |
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} |
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hb_bool_t hb_graphite_shape (hb_font_t *font, |
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hb_buffer_t *buffer, |
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const hb_feature_t *features, |
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unsigned int num_features, |
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const char * const *shaper_options) |
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{ |
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hb_face_t *face = font->face; |
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gr_face *grface = NULL; |
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gr_font *grfont = NULL; |
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gr_segment *seg = NULL; |
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unsigned int *text = NULL; |
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hbgr_cluster_t *clusters = NULL; |
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unsigned short *gids = NULL; |
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unsigned int charlen; |
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hb_glyph_info_t *bufferi = hb_buffer_get_glyph_infos(buffer, &charlen); |
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int success = 0; |
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unsigned int *p; |
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const gr_slot *is; |
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unsigned int glyphlen; |
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unsigned short *pg; |
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unsigned int ci = 0, ic = 0; |
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float curradvx = 0., curradvy = 0.; |
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if (!charlen || hbgr_make_fonts(font, face)) return 0; |
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grface = ((hbgr_face_t *)face->user_data)->grface; |
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grfont = ((hbgr_font_t *)font->user_data)->grfont; |
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const char *lang = hb_language_to_string(hb_buffer_get_language(buffer)); |
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gr_feature_val *feats = gr_face_featureval_for_lang(grface, lang ? hb_tag_from_string(lang) : 0); |
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while (num_features--) |
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{ |
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const gr_feature_ref *fref = gr_face_find_fref(grface, features->tag); |
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if (fref) |
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gr_fref_set_feature_value(fref, features->value, feats); |
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features++; |
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} |
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text = (unsigned int *)malloc((charlen + 1) * sizeof(unsigned int)); |
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if (!text) goto dieout; |
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p = text; |
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for (unsigned int i = 0; i < charlen; ++i) |
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*p++ = bufferi++->codepoint; |
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*p = 0; |
||||||
|
|
||||||
|
hb_tag_t script_tag_1, script_tag_2; |
||||||
|
hb_ot_tags_from_script(hb_buffer_get_script(buffer), &script_tag_1, &script_tag_2); |
||||||
|
seg = gr_make_seg(grfont, grface, script_tag_2 == HB_TAG_NONE ? script_tag_1 : script_tag_2, |
||||||
|
feats, gr_utf32, text, charlen, hb_buffer_get_direction(buffer) == HB_DIRECTION_RTL ? 3 : 0); |
||||||
|
if (!seg) goto dieout; |
||||||
|
glyphlen = gr_seg_n_slots(seg); |
||||||
|
clusters = (hbgr_cluster_t *)malloc(charlen * sizeof(hbgr_cluster_t)); |
||||||
|
if (!glyphlen || !clusters) goto dieout; |
||||||
|
memset(clusters, 0, charlen * sizeof(hbgr_cluster_t)); |
||||||
|
gids = (unsigned short *)malloc(glyphlen * sizeof(unsigned short)); |
||||||
|
if (!gids) goto dieout; |
||||||
|
pg = gids; |
||||||
|
for (is = gr_seg_first_slot(seg), ic = 0; is; is = gr_slot_next_in_segment(is), ic++) |
||||||
|
{ |
||||||
|
unsigned int before = gr_slot_before(is); |
||||||
|
unsigned int after = gr_slot_after(is); |
||||||
|
*pg = gr_slot_gid(is); |
||||||
|
*pg++ = hb_be_uint16(*pg); // insane: swap bytes so be16 can swap them back
|
||||||
|
while (clusters[ci].base_char > before && ci) |
||||||
|
{ |
||||||
|
clusters[ci-1].num_chars += clusters[ci].num_chars; |
||||||
|
clusters[ci-1].num_glyphs += clusters[ci].num_glyphs; |
||||||
|
--ci; |
||||||
|
} |
||||||
|
|
||||||
|
if (gr_slot_can_insert_before(is) && clusters[ci].num_chars && before >= clusters[ci].base_char + clusters[ci].num_chars) |
||||||
|
{ |
||||||
|
hbgr_cluster_t *c = clusters + ci + 1; |
||||||
|
c->base_char = clusters[ci].base_char + clusters[ci].num_chars; |
||||||
|
c->num_chars = before - c->base_char; |
||||||
|
c->base_glyph = ic; |
||||||
|
c->num_glyphs = 0; |
||||||
|
++ci; |
||||||
|
} |
||||||
|
++clusters[ci].num_glyphs; |
||||||
|
|
||||||
|
if (clusters[ci].base_char + clusters[ci].num_chars < after + 1) |
||||||
|
clusters[ci].num_chars = after + 1 - clusters[ci].base_char; |
||||||
|
} |
||||||
|
|
||||||
|
buffer->clear_output(); |
||||||
|
for (unsigned int i = 0; i <= ci; ++i) |
||||||
|
buffer->replace_glyphs_be16(clusters[i].num_chars, clusters[i].num_glyphs, gids + clusters[i].base_glyph); |
||||||
|
buffer->swap_buffers(); |
||||||
|
|
||||||
|
hb_glyph_position_t *pPos; |
||||||
|
for (pPos = hb_buffer_get_glyph_positions(buffer, NULL), is = gr_seg_first_slot(seg); |
||||||
|
is; pPos++, is = gr_slot_next_in_segment(is)) |
||||||
|
{ |
||||||
|
pPos->x_offset = gr_slot_origin_X(is) - curradvx; |
||||||
|
pPos->y_offset = gr_slot_origin_Y(is) - curradvy; |
||||||
|
pPos->x_advance = gr_slot_advance_X(is, grface, grfont); |
||||||
|
pPos->y_advance = gr_slot_advance_Y(is, grface, grfont); |
||||||
|
// if (pPos->x_advance < 0 && gr_slot_attached_to(is))
|
||||||
|
// pPos->x_advance = 0;
|
||||||
|
curradvx += pPos->x_advance; |
||||||
|
curradvy += pPos->y_advance; |
||||||
|
} |
||||||
|
pPos[-1].x_advance += gr_seg_advance_X(seg) - curradvx; |
||||||
|
success = 1; |
||||||
|
|
||||||
|
dieout: |
||||||
|
if (gids) free(gids); |
||||||
|
if (clusters) free(clusters); |
||||||
|
if (seg) gr_seg_destroy(seg); |
||||||
|
if (text) free(text); |
||||||
|
return success; |
||||||
|
} |
||||||
|
|
||||||
|
int hb_graphite2_feature_check(const hb_feature_t *feats, unsigned int num_feats) |
||||||
|
{ |
||||||
|
while (num_feats--) |
||||||
|
{ |
||||||
|
if (feats[num_feats].tag == HB_TAG(' ', 'R', 'N', 'D')) |
||||||
|
return (feats[num_feats].value == 1); |
||||||
|
} |
||||||
|
return 1; |
||||||
|
} |
||||||
|
|
||||||
|
HB_END_DECLS |
||||||
@ -0,0 +1,47 @@ |
|||||||
|
/*
|
||||||
|
* Copyright (C) 2011 Martin Hosken |
||||||
|
* Copyright (C) 2011 SIL International |
||||||
|
* |
||||||
|
* 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. |
||||||
|
*/ |
||||||
|
|
||||||
|
#ifndef HB_GRAPHITE2_H |
||||||
|
#define HB_GRAPHITE2_H |
||||||
|
|
||||||
|
#include "hb.h" |
||||||
|
#include "hb-shape.h" |
||||||
|
|
||||||
|
HB_BEGIN_DECLS |
||||||
|
|
||||||
|
|
||||||
|
#define HB_GRAPHITE_TAG_Silf HB_TAG('S','i','l','f') |
||||||
|
|
||||||
|
hb_bool_t hb_graphite_shape (hb_font_t *font, |
||||||
|
hb_buffer_t *buffer, |
||||||
|
const hb_feature_t *features, |
||||||
|
unsigned int num_features, |
||||||
|
const char * const *shaper_options); |
||||||
|
|
||||||
|
int hb_graphite2_feature_check(const hb_feature_t *feats, unsigned int num_feats); |
||||||
|
|
||||||
|
HB_END_DECLS |
||||||
|
|
||||||
|
#endif /* HB_GRAPHITE2_H */ |
||||||
Loading…
Reference in new issue