/*
* Copyright © 2007,2008,2009 Red Hat, Inc.
+ * Copyright © 2018,2019,2020 Ebrahim Byagowi
+ * Copyright © 2018 Khaled Hosny
*
* This is part of HarfBuzz, a text shaping library.
*
* Red Hat Author(s): Behdad Esfahbod
*/
-#include "hb-open-file-private.hh"
-#include "hb-ot-layout-gdef-table.hh"
-#include "hb-ot-layout-gsubgpos-private.hh"
-
-#ifdef HAVE_GLIB
-#include <glib.h>
+#ifdef HAVE_CONFIG_H
+#include "config.h"
#endif
+
+#include "hb.h"
+#include "hb-ot.h"
+
#include <stdlib.h>
#include <stdio.h>
+#include <string.h>
+#ifdef HB_NO_OPEN
+#define hb_blob_create_from_file(x) hb_blob_get_empty ()
+#endif
-using namespace OT;
+#if !defined(HB_NO_COLOR) && !defined(HB_NO_DRAW) && defined(HB_EXPERIMENTAL_API)
+static void
+svg_dump (hb_face_t *face, unsigned face_index)
+{
+ unsigned glyph_count = hb_face_get_glyph_count (face);
-#ifndef HB_NO_VISIBILITY
-const void * const OT::_hb_NullPool[HB_NULL_POOL_SIZE / sizeof (void *)] = {};
-#endif
+ for (unsigned glyph_id = 0; glyph_id < glyph_count; ++glyph_id)
+ {
+ hb_blob_t *blob = hb_ot_color_glyph_reference_svg (face, glyph_id);
-int
-main (int argc, char **argv)
+ if (hb_blob_get_length (blob) == 0) continue;
+
+ unsigned length;
+ const char *data = hb_blob_get_data (blob, &length);
+
+ char output_path[255];
+ sprintf (output_path, "out/svg-%u-%u.svg%s",
+ glyph_id,
+ face_index,
+ // append "z" if the content is gzipped, https://stackoverflow.com/a/6059405
+ (length > 2 && (data[0] == '\x1F') && (data[1] == '\x8B')) ? "z" : "");
+
+ FILE *f = fopen (output_path, "wb");
+ fwrite (data, 1, length, f);
+ fclose (f);
+
+ hb_blob_destroy (blob);
+ }
+}
+
+/* _png API is so easy to use unlike the below code, don't get confused */
+static void
+png_dump (hb_face_t *face, unsigned face_index)
{
- if (argc != 2) {
- fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]);
- exit (1);
+ unsigned glyph_count = hb_face_get_glyph_count (face);
+ hb_font_t *font = hb_font_create (face);
+
+ /* scans the font for strikes */
+ unsigned sample_glyph_id;
+ /* we don't care about different strikes for different glyphs at this point */
+ for (sample_glyph_id = 0; sample_glyph_id < glyph_count; ++sample_glyph_id)
+ {
+ hb_blob_t *blob = hb_ot_color_glyph_reference_png (font, sample_glyph_id);
+ unsigned blob_length = hb_blob_get_length (blob);
+ hb_blob_destroy (blob);
+ if (blob_length != 0)
+ break;
+ }
+
+ unsigned upem = hb_face_get_upem (face);
+ unsigned blob_length = 0;
+ unsigned strike = 0;
+ for (unsigned ppem = 1; ppem < upem; ++ppem)
+ {
+ hb_font_set_ppem (font, ppem, ppem);
+ hb_blob_t *blob = hb_ot_color_glyph_reference_png (font, sample_glyph_id);
+ unsigned new_blob_length = hb_blob_get_length (blob);
+ hb_blob_destroy (blob);
+ if (new_blob_length != blob_length)
+ {
+ for (unsigned glyph_id = 0; glyph_id < glyph_count; ++glyph_id)
+ {
+ hb_blob_t *blob = hb_ot_color_glyph_reference_png (font, glyph_id);
+
+ if (hb_blob_get_length (blob) == 0) continue;
+
+ unsigned length;
+ const char *data = hb_blob_get_data (blob, &length);
+
+ char output_path[255];
+ sprintf (output_path, "out/png-%u-%u-%u.png", glyph_id, strike, face_index);
+
+ FILE *f = fopen (output_path, "wb");
+ fwrite (data, 1, length, f);
+ fclose (f);
+
+ hb_blob_destroy (blob);
+ }
+
+ strike++;
+ blob_length = new_blob_length;
+ }
+ }
+
+ hb_font_destroy (font);
+}
+
+struct user_data_t
+{
+ FILE *f;
+ hb_position_t ascender;
+};
+
+static void
+move_to (hb_position_t to_x, hb_position_t to_y, user_data_t &user_data)
+{
+ fprintf (user_data.f, "M%d,%d", to_x, user_data.ascender - to_y);
+}
+
+static void
+line_to (hb_position_t to_x, hb_position_t to_y, user_data_t &user_data)
+{
+ fprintf (user_data.f, "L%d,%d", to_x, user_data.ascender - to_y);
+}
+
+static void
+quadratic_to (hb_position_t control_x, hb_position_t control_y,
+ hb_position_t to_x, hb_position_t to_y,
+ user_data_t &user_data)
+{
+ fprintf (user_data.f, "Q%d,%d %d,%d", control_x, user_data.ascender - control_y,
+ to_x, user_data.ascender - to_y);
+}
+
+static void
+cubic_to (hb_position_t control1_x, hb_position_t control1_y,
+ hb_position_t control2_x, hb_position_t control2_y,
+ hb_position_t to_x, hb_position_t to_y,
+ user_data_t &user_data)
+{
+ fprintf (user_data.f, "C%d,%d %d,%d %d,%d", control1_x, user_data.ascender - control1_y,
+ control2_x, user_data.ascender - control2_y,
+ to_x, user_data.ascender - to_y);
+}
+
+static void
+close_path (user_data_t &user_data)
+{
+ fprintf (user_data.f, "Z");
+}
+
+static void
+layered_glyph_dump (hb_font_t *font, hb_draw_funcs_t *funcs, unsigned face_index)
+{
+ hb_face_t *face = hb_font_get_face (font);
+ unsigned palette_count = hb_ot_color_palette_get_count (face);
+ for (unsigned palette = 0; palette < palette_count; ++palette)
+ {
+ unsigned num_colors = hb_ot_color_palette_get_colors (face, palette, 0, nullptr, nullptr);
+ if (!num_colors) continue;
+
+ hb_color_t *colors = (hb_color_t*) calloc (num_colors, sizeof (hb_color_t));
+ hb_ot_color_palette_get_colors (face, palette, 0, &num_colors, colors);
+ if (!num_colors)
+ {
+ free (colors);
+ continue;
+ }
+
+ unsigned num_glyphs = hb_face_get_glyph_count (face);
+ for (hb_codepoint_t gid = 0; gid < num_glyphs; ++gid)
+ {
+ unsigned num_layers = hb_ot_color_glyph_get_layers (face, gid, 0, nullptr, nullptr);
+ if (!num_layers) continue;
+
+ hb_ot_color_layer_t *layers = (hb_ot_color_layer_t*) malloc (num_layers * sizeof (hb_ot_color_layer_t));
+
+ hb_ot_color_glyph_get_layers (face, gid, 0, &num_layers, layers);
+ if (num_layers)
+ {
+ hb_font_extents_t font_extents;
+ hb_font_get_extents_for_direction (font, HB_DIRECTION_LTR, &font_extents);
+ hb_glyph_extents_t extents = {0};
+ if (!hb_font_get_glyph_extents (font, gid, &extents))
+ {
+ printf ("Skip gid: %d\n", gid);
+ continue;
+ }
+
+ char output_path[255];
+ sprintf (output_path, "out/colr-%u-%u-%u.svg", gid, palette, face_index);
+ FILE *f = fopen (output_path, "wb");
+ fprintf (f, "<svg xmlns=\"http://www.w3.org/2000/svg\""
+ " viewBox=\"%d %d %d %d\">\n",
+ extents.x_bearing, 0,
+ extents.x_bearing + extents.width, -extents.height);
+ user_data_t user_data;
+ user_data.ascender = extents.y_bearing;
+ user_data.f = f;
+
+ for (unsigned layer = 0; layer < num_layers; ++layer)
+ {
+ hb_color_t color = 0x000000FF;
+ if (layers[layer].color_index != 0xFFFF)
+ color = colors[layers[layer].color_index];
+ fprintf (f, "<path fill=\"#%02X%02X%02X\" ",
+ hb_color_get_red (color), hb_color_get_green (color), hb_color_get_green (color));
+ if (hb_color_get_alpha (color) != 255)
+ fprintf (f, "fill-opacity=\"%.3f\"", (double) hb_color_get_alpha (color) / 255.);
+ fprintf (f, "d=\"");
+ if (!hb_font_draw_glyph (font, layers[layer].glyph, funcs, &user_data))
+ printf ("Failed to decompose layer %d while %d\n", layers[layer].glyph, gid);
+ fprintf (f, "\"/>\n");
+ }
+
+ fprintf (f, "</svg>");
+ fclose (f);
+ }
+ free (layers);
+ }
+
+ free (colors);
+ }
+}
+
+static void
+dump_glyphs (hb_font_t *font, hb_draw_funcs_t *funcs, unsigned face_index)
+{
+ unsigned num_glyphs = hb_face_get_glyph_count (hb_font_get_face (font));
+ for (unsigned gid = 0; gid < num_glyphs; ++gid)
+ {
+ hb_font_extents_t font_extents;
+ hb_font_get_extents_for_direction (font, HB_DIRECTION_LTR, &font_extents);
+ hb_glyph_extents_t extents = {0};
+ if (!hb_font_get_glyph_extents (font, gid, &extents))
+ {
+ printf ("Skip gid: %d\n", gid);
+ continue;
+ }
+
+ char output_path[255];
+ sprintf (output_path, "out/%u-%u.svg", face_index, gid);
+ FILE *f = fopen (output_path, "wb");
+ fprintf (f, "<svg xmlns=\"http://www.w3.org/2000/svg\""
+ " viewBox=\"%d %d %d %d\"><path d=\"",
+ extents.x_bearing, 0,
+ extents.x_bearing + extents.width, font_extents.ascender - font_extents.descender);
+ user_data_t user_data;
+ user_data.ascender = font_extents.ascender;
+ user_data.f = f;
+ if (!hb_font_draw_glyph (font, gid, funcs, &user_data))
+ printf ("Failed to decompose gid: %d\n", gid);
+ fprintf (f, "\"/></svg>");
+ fclose (f);
+ }
+}
+
+static void
+dump_glyphs (hb_blob_t *blob, const char *font_name)
+{
+ FILE *font_name_file = fopen ("out/.dumped_font_name", "r");
+ if (font_name_file)
+ {
+ fprintf (stderr, "Purge or rename ./out folder if you like to run a glyph dump,\n"
+ "run it like `rm -rf out && mkdir out && src/main font-file.ttf`\n");
+ return;
+ }
+
+ font_name_file = fopen ("out/.dumped_font_name", "w");
+ if (!font_name_file)
+ {
+ fprintf (stderr, "./out is not accessible as a folder, create it please\n");
+ return;
+ }
+ fwrite (font_name, 1, strlen (font_name), font_name_file);
+ fclose (font_name_file);
+
+ hb_draw_funcs_t *funcs = hb_draw_funcs_create ();
+ hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) move_to);
+ hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) line_to);
+ hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) quadratic_to);
+ hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) cubic_to);
+ hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) close_path);
+
+ unsigned num_faces = hb_face_count (blob);
+ for (unsigned face_index = 0; face_index < num_faces; ++face_index)
+ {
+ hb_face_t *face = hb_face_create (blob, face_index);
+ hb_font_t *font = hb_font_create (face);
+
+ if (hb_ot_color_has_png (face))
+ printf ("Dumping png (CBDT/sbix)...\n");
+ png_dump (face, face_index);
+
+ if (hb_ot_color_has_svg (face))
+ printf ("Dumping svg (SVG )...\n");
+ svg_dump (face, face_index);
+
+ if (hb_ot_color_has_layers (face) && hb_ot_color_has_palettes (face))
+ printf ("Dumping layered color glyphs (COLR/CPAL)...\n");
+ layered_glyph_dump (font, funcs, face_index);
+
+ dump_glyphs (font, funcs, face_index);
+
+ hb_font_destroy (font);
+ hb_face_destroy (face);
}
- const char *font_data = nullptr;
- int len = 0;
-
-#ifdef HAVE_GLIB
- GMappedFile *mf = g_mapped_file_new (argv[1], false, nullptr);
- font_data = g_mapped_file_get_contents (mf);
- len = g_mapped_file_get_length (mf);
-#else
- FILE *f = fopen (argv[1], "rb");
- fseek (f, 0, SEEK_END);
- len = ftell (f);
- fseek (f, 0, SEEK_SET);
- font_data = (const char *) malloc (len);
- len = fread ((char *) font_data, 1, len, f);
+ hb_draw_funcs_destroy (funcs);
+}
#endif
- printf ("Opened font file %s: %d bytes long\n", argv[1], len);
+#ifndef MAIN_CC_NO_PRIVATE_API
+/* Only this part of this mini app uses private API */
+#include "hb-static.cc"
+#include "hb-open-file.hh"
+#include "hb-ot-layout-gdef-table.hh"
+#include "hb-ot-layout-gsubgpos.hh"
+
+using namespace OT;
- const OpenTypeFontFile &ot = *CastP<OpenTypeFontFile> (font_data);
+static void
+print_layout_info_using_private_api (hb_blob_t *blob)
+{
+ const char *font_data = hb_blob_get_data (blob, nullptr);
+ hb_blob_t *font_blob = hb_sanitize_context_t ().sanitize_blob<OpenTypeFontFile> (blob);
+ const OpenTypeFontFile* sanitized = font_blob->as<OpenTypeFontFile> ();
+ if (!font_blob->data)
+ {
+ printf ("Sanitization of the file wasn't successful. Exit");
+ exit (1);
+ }
+ const OpenTypeFontFile& ot = *sanitized;
- switch (ot.get_tag ()) {
+ switch (ot.get_tag ())
+ {
case OpenTypeFontFile::TrueTypeTag:
printf ("OpenType font with TrueType outlines\n");
break;
case OpenTypeFontFile::Typ1Tag:
printf ("Obsolete Apple Type1 font in SFNT container\n");
break;
+ case OpenTypeFontFile::DFontTag:
+ printf ("DFont Mac Resource Fork\n");
+ break;
default:
printf ("Unknown font format\n");
break;
}
- int num_fonts = ot.get_face_count ();
- printf ("%d font(s) found in file\n", num_fonts);
- for (int n_font = 0; n_font < num_fonts; n_font++) {
+ unsigned num_faces = hb_face_count (blob);
+ printf ("%d font(s) found in file\n", num_faces);
+ for (unsigned n_font = 0; n_font < num_faces; ++n_font)
+ {
const OpenTypeFontFace &font = ot.get_face (n_font);
- printf ("Font %d of %d:\n", n_font, num_fonts);
+ printf ("Font %d of %d:\n", n_font, num_faces);
- int num_tables = font.get_table_count ();
+ unsigned num_tables = font.get_table_count ();
printf (" %d table(s) found in font\n", num_tables);
- for (int n_table = 0; n_table < num_tables; n_table++) {
+ for (unsigned n_table = 0; n_table < num_tables; ++n_table)
+ {
const OpenTypeTable &table = font.get_table (n_table);
printf (" Table %2d of %2d: %.4s (0x%08x+0x%08x)\n", n_table, num_tables,
- (const char *)table.tag,
- (unsigned int) table.offset,
- (unsigned int) table.length);
+ (const char *) table.tag,
+ (unsigned) table.offset,
+ (unsigned) table.length);
- switch (table.tag) {
+ switch (table.tag)
+ {
case HB_OT_TAG_GSUB:
case HB_OT_TAG_GPOS:
{
- const GSUBGPOS &g = *CastP<GSUBGPOS> (font_data + table.offset);
+ const GSUBGPOS &g = *reinterpret_cast<const GSUBGPOS *> (font_data + table.offset);
- int num_scripts = g.get_script_count ();
+ unsigned num_scripts = g.get_script_count ();
printf (" %d script(s) found in table\n", num_scripts);
- for (int n_script = 0; n_script < num_scripts; n_script++) {
+ for (unsigned n_script = 0; n_script < num_scripts; ++n_script)
+ {
const Script &script = g.get_script (n_script);
printf (" Script %2d of %2d: %.4s\n", n_script, num_scripts,
- (const char *)g.get_script_tag(n_script));
+ (const char *) g.get_script_tag (n_script));
- if (!script.has_default_lang_sys())
+ if (!script.has_default_lang_sys ())
printf (" No default language system\n");
int num_langsys = script.get_lang_sys_count ();
printf (" %d language system(s) found in script\n", num_langsys);
- for (int n_langsys = script.has_default_lang_sys() ? -1 : 0; n_langsys < num_langsys; n_langsys++) {
+ for (int n_langsys = script.has_default_lang_sys () ? -1 : 0; n_langsys < num_langsys; ++n_langsys)
+ {
const LangSys &langsys = n_langsys == -1
? script.get_default_lang_sys ()
: script.get_lang_sys (n_langsys);
printf (" Default Language System\n");
else
printf (" Language System %2d of %2d: %.4s\n", n_langsys, num_langsys,
- (const char *)script.get_lang_sys_tag (n_langsys));
+ (const char *) script.get_lang_sys_tag (n_langsys));
if (!langsys.has_required_feature ())
printf (" No required feature\n");
else
printf (" Required feature index: %d\n",
langsys.get_required_feature_index ());
- int num_features = langsys.get_feature_count ();
+ unsigned num_features = langsys.get_feature_count ();
printf (" %d feature(s) found in language system\n", num_features);
- for (int n_feature = 0; n_feature < num_features; n_feature++) {
+ for (unsigned n_feature = 0; n_feature < num_features; ++n_feature)
+ {
printf (" Feature index %2d of %2d: %d\n", n_feature, num_features,
- langsys.get_feature_index (n_feature));
+ langsys.get_feature_index (n_feature));
}
}
}
- int num_features = g.get_feature_count ();
+ unsigned num_features = g.get_feature_count ();
printf (" %d feature(s) found in table\n", num_features);
- for (int n_feature = 0; n_feature < num_features; n_feature++) {
+ for (unsigned n_feature = 0; n_feature < num_features; ++n_feature)
+ {
const Feature &feature = g.get_feature (n_feature);
- int num_lookups = feature.get_lookup_count ();
+ unsigned num_lookups = feature.get_lookup_count ();
printf (" Feature %2d of %2d: %c%c%c%c\n", n_feature, num_features,
- HB_UNTAG(g.get_feature_tag(n_feature)));
+ HB_UNTAG (g.get_feature_tag (n_feature)));
printf (" %d lookup(s) found in feature\n", num_lookups);
- for (int n_lookup = 0; n_lookup < num_lookups; n_lookup++) {
+ for (unsigned n_lookup = 0; n_lookup < num_lookups; ++n_lookup) {
printf (" Lookup index %2d of %2d: %d\n", n_lookup, num_lookups,
- feature.get_lookup_index (n_lookup));
+ feature.get_lookup_index (n_lookup));
}
}
- int num_lookups = g.get_lookup_count ();
+ unsigned num_lookups = g.get_lookup_count ();
printf (" %d lookup(s) found in table\n", num_lookups);
- for (int n_lookup = 0; n_lookup < num_lookups; n_lookup++) {
+ for (unsigned n_lookup = 0; n_lookup < num_lookups; ++n_lookup)
+ {
const Lookup &lookup = g.get_lookup (n_lookup);
printf (" Lookup %2d of %2d: type %d, props 0x%04X\n", n_lookup, num_lookups,
- lookup.get_type(), lookup.get_props());
+ lookup.get_type (), lookup.get_props ());
}
}
case GDEF::tableTag:
{
- const GDEF &gdef = *CastP<GDEF> (font_data + table.offset);
+ const GDEF &gdef = *reinterpret_cast<const GDEF *> (font_data + table.offset);
printf (" Has %sglyph classes\n",
gdef.has_glyph_classes () ? "" : "no ");
}
}
}
-
- return 0;
}
+/* end of private API use */
+#endif
+
+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]);
+ printf ("Opened font file %s: %d bytes long\n", argv[1], hb_blob_get_length (blob));
+#ifndef MAIN_CC_NO_PRIVATE_API
+ print_layout_info_using_private_api (blob);
+#endif
+#if !defined(HB_NO_COLOR) && !defined(HB_NO_DRAW) && defined(HB_EXPERIMENTAL_API)
+ dump_glyphs (blob, argv[1]);
+#endif
+ hb_blob_destroy (blob);
+ return 0;
+}
projects / platform / upstream / harfbuzz.git / blobdiff