summaryrefslogtreecommitdiff
path: root/Build/source/libs/harfbuzz/harfbuzz-src/src/dump-emoji.cc
blob: 65214692ff58083561d9e5aaf588651b0ce23b3c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
/*
 * Copyright © 2018  Ebrahim Byagowi
 *
 *  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.
 */

#include "hb-static.cc"
#include "hb-ot-color-cbdt-table.hh"
#include "hb-ot-color-colr-table.hh"
#include "hb-ot-color-cpal-table.hh"
#include "hb-ot-color-sbix-table.hh"
#include "hb-ot-color-svg-table.hh"

#include "hb-ft.h"

#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H

#include <cairo.h>
#include <cairo-ft.h>
#include <cairo-svg.h>

#ifdef HAVE_GLIB
#include <glib.h>
#endif
#include <stdlib.h>
#include <stdio.h>

void cbdt_callback (const uint8_t* data, unsigned int length,
                    unsigned int group, unsigned int gid)
{
  char output_path[255];
  sprintf (output_path, "out/cbdt-%d-%d.png", group, gid);
  FILE *f = fopen (output_path, "wb");
  fwrite (data, 1, length, f);
  fclose (f);
}

void sbix_callback (const uint8_t* data, unsigned int length,
                    unsigned int group, unsigned int gid)
{
  char output_path[255];
  sprintf (output_path, "out/sbix-%d-%d.png", group, gid);
  FILE *f = fopen (output_path, "wb");
  fwrite (data, 1, length, f);
  fclose (f);
}

void svg_callback (const uint8_t* data, unsigned int length,
                   unsigned int start_glyph, unsigned int end_glyph)
{
  char output_path[255];
  if (start_glyph == end_glyph)
    sprintf (output_path, "out/svg-%d.svg", start_glyph);
  else
    sprintf (output_path, "out/svg-%d-%d.svg", start_glyph, end_glyph);

  // append "z" if the content is gzipped
  if ((data[0] == 0x1F) && (data[1] == 0x8B))
    strcat (output_path, "z");

  FILE *f = fopen (output_path, "wb");
  fwrite (data, 1, length, f);
  fclose (f);
}

void colr_cpal_rendering (cairo_font_face_t *cairo_face, unsigned int upem, unsigned int num_glyphs,
			  const OT::COLR *colr, const OT::CPAL *cpal)
{
  for (unsigned int i = 0; i < num_glyphs; ++i)
  {
    unsigned int first_layer_index, num_layers;
    if (colr->get_base_glyph_record (i, &first_layer_index, &num_layers))
    {
      // Measure
      cairo_text_extents_t extents;
      {
	cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
	cairo_t *cr = cairo_create (surface);
	cairo_set_font_face (cr, cairo_face);
	cairo_set_font_size (cr, upem);

	cairo_glyph_t *glyphs = (cairo_glyph_t *) calloc (num_layers, sizeof (cairo_glyph_t));
	for (unsigned int j = 0; j < num_layers; ++j)
	{
	  hb_codepoint_t glyph_id;
	  unsigned int color_index;
	  colr->get_layer_record (first_layer_index + j, &glyph_id, &color_index);
	  glyphs[j].index = glyph_id;
	}
	cairo_glyph_extents (cr, glyphs, num_layers, &extents);
	free (glyphs);
	cairo_surface_destroy (surface);
	cairo_destroy (cr);
      }

      // Add a slight margin
      extents.width += extents.width / 10;
      extents.height += extents.height / 10;
      extents.x_bearing -= extents.width / 20;
      extents.y_bearing -= extents.height / 20;

      // Render
      unsigned int pallet_count = cpal->get_palette_count ();
      for (unsigned int pallet = 0; pallet < pallet_count; ++pallet) {
	char output_path[255];

	// If we have more than one pallet, use a better namin
	if (pallet_count == 1)
	  sprintf (output_path, "out/colr-%d.svg", i);
	else
	  sprintf (output_path, "out/colr-%d-%d.svg", i, pallet);

	cairo_surface_t *surface = cairo_svg_surface_create (output_path, extents.width, extents.height);
	cairo_t *cr = cairo_create (surface);
	cairo_set_font_face (cr, cairo_face);
	cairo_set_font_size (cr, upem);

	for (unsigned int j = 0; j < num_layers; ++j)
	{
	  hb_codepoint_t glyph_id;
	  unsigned int color_index;
	  colr->get_layer_record (first_layer_index + j, &glyph_id, &color_index);

	  uint32_t color = cpal->get_color_record_argb (color_index, pallet);
	  int alpha = color & 0xFF;
	  int r = (color >> 8) & 0xFF;
	  int g = (color >> 16) & 0xFF;
	  int b = (color >> 24) & 0xFF;
	  cairo_set_source_rgba (cr, r / 255.f, g / 255.f, b / 255.f, alpha);

	  cairo_glyph_t glyph;
	  glyph.index = glyph_id;
	  glyph.x = -extents.x_bearing;
	  glyph.y = -extents.y_bearing;
	  cairo_show_glyphs (cr, &glyph, 1);
	}

	cairo_surface_destroy (surface);
	cairo_destroy (cr);
      }
    }
  }
}

void dump_glyphs (cairo_font_face_t *cairo_face, unsigned int upem, unsigned int num_glyphs)
{
  // Dump every glyph available on the font
  return; // disabled for now
  for (unsigned int i = 0; i < num_glyphs; ++i)
  {
    cairo_text_extents_t extents;
    cairo_glyph_t glyph = {0};
    glyph.index = i;

    // Measure
    {
      cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
      cairo_t *cr = cairo_create (surface);
      cairo_set_font_face (cr, cairo_face);
      cairo_set_font_size (cr, upem);

      cairo_glyph_extents (cr, &glyph, 1, &extents);
      cairo_surface_destroy (surface);
      cairo_destroy (cr);
    }

    // Add a slight margin
    extents.width += extents.width / 10;
    extents.height += extents.height / 10;
    extents.x_bearing -= extents.width / 20;
    extents.y_bearing -= extents.height / 20;

    // Render
    {
      char output_path[255];
      sprintf (output_path, "out/%d.svg", i);
      cairo_surface_t *surface = cairo_svg_surface_create (output_path, extents.width, extents.height);
      cairo_t *cr = cairo_create (surface);
      cairo_set_font_face (cr, cairo_face);
      cairo_set_font_size (cr, upem);
      glyph.x = -extents.x_bearing;
      glyph.y = -extents.y_bearing;
      cairo_show_glyphs (cr, &glyph, 1);
      cairo_surface_destroy (surface);
      cairo_destroy (cr);
    }
  }
}

int main (int argc, char **argv)
{
  if (argc != 2) {
    fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]);
    exit (1);
  }

  hb_blob_t *blob = hb_blob_create_from_file (argv[1]);
  hb_face_t *face = hb_face_create (blob, 0);
  hb_font_t *font = hb_font_create (face);

  OT::CBDT::accelerator_t cbdt;
  cbdt.init (face);
  cbdt.dump (cbdt_callback);
  cbdt.fini ();

  OT::sbix::accelerator_t sbix;
  sbix.init (face);
  sbix.dump (sbix_callback);
  sbix.fini ();

  OT::SVG::accelerator_t svg;
  svg.init (face);
  svg.dump (svg_callback);
  svg.fini ();

  hb_blob_t* colr_blob = hb_sanitize_context_t ().reference_table<OT::COLR> (face);
  const OT::COLR *colr = colr_blob->as<OT::COLR> ();

  hb_blob_t* cpal_blob = hb_sanitize_context_t ().reference_table<OT::CPAL> (face);
  const OT::CPAL *cpal = cpal_blob->as<OT::CPAL> ();

  cairo_font_face_t *cairo_face;
  {
    FT_Library library;
    FT_Init_FreeType (&library);
    FT_Face ftface;
    FT_New_Face (library, argv[1], 0, &ftface);
    cairo_face = cairo_ft_font_face_create_for_ft_face (ftface, 0);
  }
  unsigned int num_glyphs = hb_face_get_glyph_count (face);
  unsigned int upem = hb_face_get_upem (face);
  colr_cpal_rendering (cairo_face, upem, num_glyphs, colr, cpal);
  dump_glyphs (cairo_face, upem, num_glyphs);


  hb_font_destroy (font);
  hb_face_destroy (face);
  hb_blob_destroy (blob);

  return 0;
}