diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/main.cc')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/main.cc | 408 |
1 files changed, 360 insertions, 48 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/main.cc b/src/3rdparty/harfbuzz-ng/src/main.cc index 983cb557db..e898e6e4b6 100644 --- a/src/3rdparty/harfbuzz-ng/src/main.cc +++ b/src/3rdparty/harfbuzz-ng/src/main.cc @@ -1,5 +1,7 @@ /* * 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. * @@ -24,48 +26,335 @@ * Red Hat Author(s): Behdad Esfahbod */ -#include "hb-static.cc" -#include "hb-open-file.hh" -#include "hb-ot-layout-gdef-table.hh" -#include "hb-ot-layout-gsubgpos.hh" - -#ifdef HAVE_GLIB -#include <glib.h> +#ifdef HAVE_CONFIG_H +#include "config.h" #endif -#include <stdlib.h> -#include <stdio.h> +#include "hb.h" +#include "hb-ot.h" -using namespace OT; +#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 -int -main (int argc, char **argv) +#if !defined(HB_NO_COLOR) && !defined(HB_NO_DRAW) && defined(HB_EXPERIMENTAL_API) +static void +svg_dump (hb_face_t *face, unsigned face_index) { - if (argc != 2) + unsigned glyph_count = hb_face_get_glyph_count (face); + + for (unsigned glyph_id = 0; glyph_id < glyph_count; ++glyph_id) { - fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]); - exit (1); + hb_blob_t *blob = hb_ot_color_glyph_reference_svg (face, 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/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); } +} - hb_blob_t *blob = hb_blob_create_from_file (argv[1]); - unsigned int len; - const char *font_data = hb_blob_get_data (blob, &len); - printf ("Opened font file %s: %d bytes long\n", argv[1], len); +/* _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) +{ + 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_blob_t *font_blob = hb_sanitize_context_t().sanitize_blob<OpenTypeFontFile> (blob); + 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); + } + + hb_draw_funcs_destroy (funcs); +} +#endif + +#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; + +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"); - return 1; + exit (1); } const OpenTypeFontFile& ot = *sanitized; - switch (ot.get_tag ()) { case OpenTypeFontFile::TrueTypeTag: @@ -91,22 +380,22 @@ main (int argc, char **argv) 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); + (unsigned) table.offset, + (unsigned) table.length); switch (table.tag) { @@ -115,21 +404,22 @@ main (int argc, char **argv) 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); @@ -137,16 +427,16 @@ main (int argc, char **argv) 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)); @@ -154,29 +444,29 @@ main (int argc, char **argv) } } - 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)); } } - 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 ()); } } @@ -185,7 +475,7 @@ main (int argc, char **argv) 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 "); @@ -202,6 +492,28 @@ main (int argc, char **argv) } } } +} +/* 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; } |