/* Pango * pango-fontmap.c: Font handling * * Copyright (C) 2000 Red Hat Software * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include #include "pango-fontmap.h" #include "pango-impl-utils.h" #include static PangoFontset *pango_font_map_real_load_fontset (PangoFontMap *fontmap, PangoContext *context, const PangoFontDescription *desc, PangoLanguage *language); G_DEFINE_TYPE (PangoFontMap, pango_font_map, G_TYPE_OBJECT) static void pango_font_map_class_init (PangoFontMapClass *class) { class->load_fontset = pango_font_map_real_load_fontset; } static void pango_font_map_init (PangoFontMap *fontmap) { } /** * pango_font_map_load_font: * @fontmap: a #PangoFontMap * @context: the #PangoContext the font will be used with * @desc: a #PangoFontDescription describing the font to load * * Load the font in the fontmap that is the closest match for @desc. * * Returns the font loaded, or %NULL if no font matched. **/ PangoFont * pango_font_map_load_font (PangoFontMap *fontmap, PangoContext *context, const PangoFontDescription *desc) { g_return_val_if_fail (fontmap != NULL, NULL); g_return_val_if_fail (pango_font_description_get_family (desc) != NULL, NULL); return PANGO_FONT_MAP_GET_CLASS (fontmap)->load_font (fontmap, context, desc); } /** * pango_font_map_list_families: * @fontmap: a #PangoFontMap * @families: location to store a pointer to an array of #PangoFontFamily *. * This array should be freed with g_free(). * @n_families: location to store the number of elements in @families * * List all families for a fontmap. **/ void pango_font_map_list_families (PangoFontMap *fontmap, PangoFontFamily ***families, int *n_families) { g_return_if_fail (fontmap != NULL); PANGO_FONT_MAP_GET_CLASS (fontmap)->list_families (fontmap, families, n_families); } /** * pango_font_map_load_fontset: * @fontmap: a #PangoFontMap * @context: the #PangoContext the font will be used with * @desc: a #PangoFontDescription describing the font to load * @language: a #PangoLanguage the fonts will be used for * * Load a set of fonts in the fontmap that can be used to render * a font matching @desc. * * Returns the fontset, or %NULL if no font matched. **/ PangoFontset * pango_font_map_load_fontset (PangoFontMap *fontmap, PangoContext *context, const PangoFontDescription *desc, PangoLanguage *language) { g_return_val_if_fail (fontmap != NULL, NULL); g_return_val_if_fail (pango_font_description_get_family (desc) != NULL, NULL); return PANGO_FONT_MAP_GET_CLASS (fontmap)->load_fontset (fontmap, context, desc, language); } static void pango_font_map_fontset_add_fonts (PangoFontMap *fontmap, PangoContext *context, PangoFontsetSimple *fonts, PangoFontDescription *desc, const char *family) { char **aliases; int n_aliases; int j; PangoFont *font; pango_lookup_aliases (family, &aliases, &n_aliases); if (n_aliases) { for (j = 0; j < n_aliases; j++) { pango_font_description_set_family_static (desc, aliases[j]); font = pango_font_map_load_font (fontmap, context, desc); if (font) pango_fontset_simple_append (fonts, font); } } else { pango_font_description_set_family_static (desc, family); font = pango_font_map_load_font (fontmap, context, desc); if (font) pango_fontset_simple_append (fonts, font); } } static PangoFontset * pango_font_map_real_load_fontset (PangoFontMap *fontmap, PangoContext *context, const PangoFontDescription *desc, PangoLanguage *language) { PangoFontDescription *tmp_desc = pango_font_description_copy_static (desc); char **families; int i; PangoFontsetSimple *fonts; static GHashTable *warned_fonts = NULL; families = g_strsplit (pango_font_description_get_family (desc), ",", -1); fonts = pango_fontset_simple_new (language); for (i = 0; families[i]; i++) pango_font_map_fontset_add_fonts (fontmap, context, fonts, tmp_desc, families[i]); g_strfreev (families); /* The font description was completely unloadable, try with * family == "Sans" */ if (pango_fontset_simple_size (fonts) == 0) { char *ctmp1, *ctmp2; pango_font_description_set_family_static (tmp_desc, pango_font_description_get_family (desc)); ctmp1 = pango_font_description_to_string (desc); pango_font_description_set_family_static (tmp_desc, "Sans"); if (!warned_fonts || !g_hash_table_lookup (warned_fonts, ctmp1)) { if (!warned_fonts) warned_fonts = g_hash_table_new (g_str_hash, g_str_equal); g_hash_table_insert (warned_fonts, g_strdup (ctmp1), GINT_TO_POINTER (1)); ctmp2 = pango_font_description_to_string (tmp_desc); g_warning ("couldn't load font \"%s\", falling back to \"%s\", " "expect ugly output.", ctmp1, ctmp2); g_free (ctmp2); } g_free (ctmp1); pango_font_map_fontset_add_fonts (fontmap, context, fonts, tmp_desc, "Sans"); } /* We couldn't try with Sans and the specified style. Try Sans Normal */ if (pango_fontset_simple_size (fonts) == 0) { char *ctmp1, *ctmp2; pango_font_description_set_family_static (tmp_desc, "Sans"); ctmp1 = pango_font_description_to_string (tmp_desc); pango_font_description_set_style (tmp_desc, PANGO_STYLE_NORMAL); pango_font_description_set_weight (tmp_desc, PANGO_WEIGHT_NORMAL); pango_font_description_set_variant (tmp_desc, PANGO_VARIANT_NORMAL); pango_font_description_set_stretch (tmp_desc, PANGO_STRETCH_NORMAL); if (!warned_fonts || !g_hash_table_lookup (warned_fonts, ctmp1)) { g_hash_table_insert (warned_fonts, g_strdup (ctmp1), GINT_TO_POINTER (1)); ctmp2 = pango_font_description_to_string (tmp_desc); g_warning ("couldn't load font \"%s\", falling back to \"%s\", " "expect ugly output.", ctmp1, ctmp2); g_free (ctmp2); } g_free (ctmp1); pango_font_map_fontset_add_fonts (fontmap, context, fonts, tmp_desc, "Sans"); } pango_font_description_free (tmp_desc); /* Everything failed, we are screwed, there is no way to continue, * but lets just not crash here. */ if (pango_fontset_simple_size (fonts) == 0) g_warning ("All font fallbacks failed!!!!"); return PANGO_FONTSET (fonts); } /** * pango_font_map_get_shape_engine_type: * @fontmap: a #PangoFontMap * * Returns the render ID for shape engines for this fontmap. * See the render_type field of * #PangoEngineInfo. * * Return value: the ID string for shape engines for * this fontmap. Owned by Pango, should not be modified * or freed. * * Since: 1.4 **/ G_CONST_RETURN char * pango_font_map_get_shape_engine_type (PangoFontMap *fontmap) { g_return_val_if_fail (PANGO_IS_FONT_MAP (fontmap), NULL); return PANGO_FONT_MAP_GET_CLASS (fontmap)->shape_engine_type; }
