#include #include "gdkprivate-fb.h" #include "gdkpango.h" #include #include #include #include #include #include #include #include #if !defined(FREETYPE_MAJOR) || FREETYPE_MAJOR != 2 #error "We need Freetype 2.0 (beta?)" #endif #define PANGO_RENDER_TYPE_FB "PangoRenderTypeFB" typedef struct { PangoFontMap parent_instance; GPtrArray *all_descs; GHashTable *all_fonts; int n_fonts; double resolution; } PangoFBFontMap; typedef struct { PangoFontMapClass parent_class; } PangoFBFontMapClass; typedef struct { PangoFontDescription desc; FT_Face ftf; } PangoFBFontListing; FT_Library gdk_fb_ft_lib = NULL; #define USE_FTGRAYS void gdk_fb_font_init(void) { FT_Init_FreeType(&gdk_fb_ft_lib); #ifdef USE_FTGRAYS FT_Set_Raster(gdk_fb_ft_lib, &ft_grays_raster); /* If this is removed, also turn off USE_FTGRAYS define in gdkdrawable-fb2.c */ #endif } void gdk_fb_font_fini(void) { FT_Done_FreeType(gdk_fb_ft_lib); } void pango_fb_font_set_size(PangoFont *font); static void pango_fb_font_map_init(PangoFBFontMap *fontmap); static PangoFont *pango_fb_font_map_load_font(PangoFontMap *fontmap, const PangoFontDescription *desc); static void pango_fb_font_map_list_fonts(PangoFontMap *fontmap, const gchar *family, PangoFontDescription ***descs, int *n_descs); static void pango_fb_font_map_list_families(PangoFontMap *fontmap, gchar ***families, int *n_families); static void pango_fb_font_map_class_init(PangoFBFontMapClass *class) { class->parent_class.load_font = pango_fb_font_map_load_font; class->parent_class.list_fonts = pango_fb_font_map_list_fonts; class->parent_class.list_families = pango_fb_font_map_list_families; } GType pango_fb_font_map_get_type(void) { static GType object_type = 0; if (!object_type) { static const GTypeInfo object_info = { sizeof (PangoFBFontMapClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) pango_fb_font_map_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (PangoFBFontMap), 0, /* n_preallocs */ (GInstanceInitFunc) pango_fb_font_map_init, }; object_type = g_type_register_static (PANGO_TYPE_FONT_MAP, "PangoFBFontMap", &object_info); } return object_type; } static PangoFont * pango_fb_font_map_load_font(PangoFontMap *fontmap, const PangoFontDescription *desc) { PangoFBFontMap *fbfm = (PangoFBFontMap *)fontmap; PangoFBFont *retval; PangoFBFontListing *fl = NULL; int i; PangoFontDescription d2; /* XXX fixme badhack */ if(!strcasecmp(desc->family_name, "sans")) { d2 = *desc; d2.family_name = "Arial"; desc = &d2; } /* XXX fixme badhack */ if(!strcasecmp(desc->family_name, "serif")) { d2 = *desc; d2.family_name = "Times New Roman"; desc = &d2; } retval = g_hash_table_lookup(fbfm->all_fonts, desc); if(retval) { g_object_ref(G_OBJECT(retval)); goto out; } for(i = 0; i < fbfm->all_descs->len; i++) { fl = g_ptr_array_index(fbfm->all_descs, i); /* Can't use pango_font_description_compare() because it checks ->size as well */ if(!g_strcasecmp(desc->family_name, fl->desc.family_name) && desc->style == fl->desc.style && desc->weight == fl->desc.weight && desc->stretch == fl->desc.stretch) break; } if(i >= fbfm->all_descs->len) return NULL; retval = (PangoFBFont *)g_type_create_instance(PANGO_TYPE_FB_FONT); retval->desc = *desc; retval->desc.family_name = g_strdup(desc->family_name); retval->ftf = fl->ftf; g_hash_table_insert(fbfm->all_fonts, &retval->desc, retval); g_object_ref(G_OBJECT(retval)); /* XXX FIXME: We have to keep the font in the cache forever because I'm too clueless to see signals in gobject */ out: return (PangoFont *)retval; } static void list_fonts(PangoFBFontMap *fm, const char *family, GPtrArray *descs, const char *dir) { DIR *dirh; struct dirent *dent; dirh = opendir(dir); if(!dirh) return; while((dent = readdir(dirh))) { PangoFBFontListing *pfd; char *ctmp; char buf[1024]; FT_Face ftf; FT_Error ec; int i = 0, n = 1; ctmp = strrchr(dent->d_name, '.'); if(!ctmp || (strcasecmp(ctmp, ".ttf") && strcasecmp(ctmp, ".pfa") && strcasecmp(ctmp, ".pfb"))) continue; g_snprintf(buf, sizeof(buf), "%s/%s", dir, dent->d_name); while(i < n) { ec = FT_New_Face(gdk_fb_ft_lib, buf, i, &ftf); if(ec) break; /* error opening */ FT_Select_Charmap(ftf, ft_encoding_unicode); n = ftf->num_faces; if(!ftf->family_name || !ftf->style_name) { g_warning("No family/style on %s", buf); FT_Done_Face(ftf); break; } pfd = g_new0(PangoFBFontListing, 1); /* Now add the item */ if(ftf->family_name[0] == '/') pfd->desc.family_name = g_strdup(ftf->family_name+1); else pfd->desc.family_name = g_strdup(ftf->family_name); pfd->desc.style = PANGO_STYLE_NORMAL; pfd->desc.variant = PANGO_VARIANT_NORMAL; pfd->desc.weight = PANGO_WEIGHT_NORMAL; pfd->desc.stretch = PANGO_STRETCH_NORMAL; if(ftf->style_name) { char lcstr[512]; strcpy(lcstr, ftf->style_name); g_strdown(lcstr); if(strstr(lcstr, "italic")) pfd->desc.style = PANGO_STYLE_ITALIC; else if(strstr(lcstr, "oblique")) pfd->desc.style = PANGO_STYLE_OBLIQUE; if(strstr(lcstr, "bold")) pfd->desc.weight = PANGO_WEIGHT_BOLD; if(strstr(lcstr, "condensed")) pfd->desc.stretch = PANGO_STRETCH_CONDENSED; else if(strstr(lcstr, "expanded")) pfd->desc.stretch = PANGO_STRETCH_EXPANDED; } pfd->ftf = ftf; g_ptr_array_add(descs, pfd); i++; } } closedir(dirh); } static guint pango_font_description_hash(gconstpointer a) { const PangoFontDescription *fa = a; return g_str_hash(fa->family_name) ^ (fa->style + fa->weight + fa->stretch + fa->variant + fa->size); } static void pango_fb_font_map_init(PangoFBFontMap *fontmap) { static const char *font_dirs[] = { "/usr/share/fonts/default/TrueType", "/usr/share/fonts/default/Type1", "/usr/lib/X11/fonts/TrueType", "/usr/lib/X11/fonts/Type1", NULL }; int i; fontmap->all_fonts = g_hash_table_new(pango_font_description_hash, (GCompareFunc)pango_font_description_compare); fontmap->all_descs = g_ptr_array_new(); for(i = 0; font_dirs[i]; i++) list_fonts(fontmap, NULL, fontmap->all_descs, font_dirs[i]); } static void pango_fb_font_map_list_fonts(PangoFontMap *fontmap, const gchar *family, PangoFontDescription ***descs, int *n_descs) { PangoFBFontMap *fbfm = (PangoFBFontMap *)fontmap; int i, n; *descs = g_new(PangoFontDescription *, fbfm->all_descs->len); *n_descs = fbfm->all_descs->len; for(i = n = 0; i < fbfm->all_descs->len; i++) { PangoFontDescription *pfd = g_ptr_array_index(fbfm->all_descs, i); if(strcasecmp(family, pfd->family_name)) continue; (*descs)[n++] = pango_font_description_copy(pfd); } *n_descs = n; *descs = g_realloc(*descs, n * sizeof(PangoFontDescription *)); } struct famlist { gchar **families; int last_added; }; static void add_entry(gpointer key, gpointer value, gpointer data) { struct famlist *fl = data; fl->families[fl->last_added++] = g_strdup(key); } static void pango_fb_font_map_list_families(PangoFontMap *fontmap, gchar ***families, int *n_families) { PangoFBFontMap *fbfm = (PangoFBFontMap *)fontmap; int i; GHashTable *thash = g_hash_table_new(g_str_hash, g_str_equal); struct famlist stickittome; for(i = 0; i < fbfm->all_descs->len; i++) { PangoFBFontListing *fl = g_ptr_array_index(fbfm->all_descs, i); g_hash_table_insert(thash, fl->desc.family_name, fl); } *n_families = g_hash_table_size(thash); *families = g_new(gchar *, *n_families); stickittome.families = *families; stickittome.last_added = 0; g_hash_table_foreach(thash, add_entry, &stickittome); g_hash_table_destroy(thash); } static PangoFontMap * pango_fb_font_map(void) { return g_object_new(pango_fb_font_map_get_type(), NULL); } PangoMap * pango_fb_get_shaper_map (const char *lang) { static guint engine_type_id = 0; static guint render_type_id = 0; if (engine_type_id == 0) { engine_type_id = g_quark_try_string(PANGO_ENGINE_TYPE_SHAPE); render_type_id = g_quark_try_string(PANGO_RENDER_TYPE_FB); } if (engine_type_id == 0) { engine_type_id = g_quark_from_static_string (PANGO_ENGINE_TYPE_SHAPE); render_type_id = g_quark_from_static_string (PANGO_RENDER_TYPE_FB); } return pango_find_map (lang, engine_type_id, render_type_id); } /*************** Font impl *****************/ #define PANGO_FB_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FB_FONT, PangoFBFontClass)) #define PANGO_FB_IS_FONT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FB_FONT)) #define PANGO_FB_IS_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FB_FONT)) #define PANGO_FB_FONT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FB_FONT, PangoFBFontClass)) typedef struct _PangoFBFontClass PangoFBFontClass; typedef struct _PangoFBMetricsInfo PangoFBMetricsInfo; typedef struct _PangoFBContextInfo PangoFBContextInfo; struct _PangoFBMetricsInfo { const char *lang; PangoFontMetrics metrics; }; struct _PangoFBContextInfo { }; struct _PangoFBFontClass { PangoFontClass parent_class; }; static void pango_fb_font_class_init (PangoFBFontClass *class); static void pango_fb_font_init (PangoFBFont *font); static void pango_fb_font_finalize (GObject *object); static PangoFontDescription *pango_fb_font_describe (PangoFont *font); static PangoCoverage * pango_fb_font_get_coverage (PangoFont *font, const char *lang); static PangoEngineShape * pango_fb_font_find_shaper (PangoFont *font, const char *lang, guint32 ch); static void pango_fb_font_get_glyph_extents (PangoFont *font, PangoGlyph glyph, PangoRectangle *ink_rect, PangoRectangle *logical_rect); static void pango_fb_font_get_metrics (PangoFont *font, const gchar *lang, PangoFontMetrics *metrics); GType pango_fb_font_get_type (void) { static GType object_type = 0; if (!object_type) { static const GTypeInfo object_info = { sizeof (PangoFBFontClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) pango_fb_font_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (PangoFBFont), 0, /* n_preallocs */ (GInstanceInitFunc) pango_fb_font_init, }; object_type = g_type_register_static (PANGO_TYPE_FONT, "PangoFBFont", &object_info); } return object_type; } static void pango_fb_font_init (PangoFBFont *font) { font->desc.size = -1; font->glyph_info = g_hash_table_new(NULL, NULL); } static gboolean g_free_2(gpointer key, gpointer value, gpointer data) { PangoFBGlyphInfo *pgi = value; g_free(pgi->fbd.drawable_data.mem); g_free(value); return TRUE; } static void pango_fb_font_clear_extent_cache(PangoFBFont *fbf) { g_hash_table_foreach_remove(fbf->glyph_info, g_free_2, NULL); } PangoFBGlyphInfo * pango_fb_font_get_glyph_info(PangoFont *font, PangoGlyph glyph) { PangoFBGlyphInfo *pgi; PangoFBFont *fbf = PANGO_FB_FONT(font); FT_Bitmap *renderme; FT_GlyphSlot g; PangoRectangle *my_logical_rect, *my_ink_rect; FT_Face ftf; gboolean free_buffer = FALSE; ftf = fbf->ftf; pango_fb_font_set_size(font); pgi = g_hash_table_lookup(fbf->glyph_info, GUINT_TO_POINTER(glyph)); if(pgi) return pgi; pgi = g_new0(PangoFBGlyphInfo, 1); FT_Load_Glyph(ftf, glyph, FT_LOAD_DEFAULT); g = ftf->glyph; if(g->format != ft_glyph_format_bitmap) { FT_BitmapGlyph bgy; int bdepth; #if defined(USE_AA) || 1 #ifdef USE_FTGRAYS bdepth = 256; #else bdepth = 128; #endif #else bdepth = 0; #endif if(FT_Get_Glyph_Bitmap(ftf, glyph, 0, bdepth, NULL, &bgy)) g_error("Glyph render failed"); renderme = &bgy->bitmap; free_buffer = TRUE; } else renderme = &g->bitmap; pgi->fbd.drawable_data.mem = g_memdup(renderme->buffer, renderme->pitch * renderme->rows); pgi->fbd.drawable_data.rowstride = renderme->pitch; pgi->fbd.drawable_data.width = pgi->fbd.drawable_data.lim_x = renderme->width; pgi->fbd.drawable_data.height = pgi->fbd.drawable_data.lim_y = renderme->rows; switch(renderme->pixel_mode) { case ft_pixel_mode_mono: pgi->fbd.drawable_data.depth = 1; break; case ft_pixel_mode_grays: #if defined(USE_FTGRAYS) pgi->fbd.drawable_data.depth = 78; #else pgi->fbd.drawable_data.depth = 77; #endif break; default: g_assert_not_reached(); break; } my_ink_rect = &pgi->extents[0]; my_logical_rect = &pgi->extents[1]; { my_ink_rect->width = (PANGO_SCALE * g->metrics.width) >> 6; my_ink_rect->height = (PANGO_SCALE * g->metrics.height) >> 6; my_ink_rect->x = - ((PANGO_SCALE * g->metrics.horiBearingX) >> 6); my_ink_rect->y = - ((PANGO_SCALE * g->metrics.horiBearingY) >> 6); } { my_logical_rect->width = (PANGO_SCALE * g->metrics.horiAdvance) >> 6; my_logical_rect->height = (PANGO_SCALE * ftf->size->metrics.height) >> 6; my_logical_rect->x = - ((PANGO_SCALE * g->metrics.horiBearingX) >> 6); my_logical_rect->y = - ((PANGO_SCALE * ftf->size->metrics.ascender) >> 6); } pgi->hbearing = ((-g->metrics.horiBearingY) >> 6); g_hash_table_insert(fbf->glyph_info, GUINT_TO_POINTER(glyph), pgi); return pgi; } static void pango_fb_font_finalize (GObject *object) { PangoFBFont *fbf = PANGO_FB_FONT(object); /* XXX FIXME g_hash_table_remove(ourfontmap, &fbf->desc); */ pango_coverage_unref(fbf->coverage); g_free(fbf->desc.family_name); pango_fb_font_clear_extent_cache(fbf); g_hash_table_destroy(fbf->glyph_info); } static void pango_fb_font_class_init (PangoFBFontClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); PangoFontClass *font_class = PANGO_FONT_CLASS (class); object_class->finalize = pango_fb_font_finalize; font_class->describe = pango_fb_font_describe; font_class->get_coverage = pango_fb_font_get_coverage; font_class->find_shaper = pango_fb_font_find_shaper; font_class->get_glyph_extents = pango_fb_font_get_glyph_extents; font_class->get_metrics = pango_fb_font_get_metrics; } static PangoFontDescription * pango_fb_font_describe(PangoFont *font) { return pango_font_description_copy(&PANGO_FB_FONT(font)->desc); } static void free_coverages_foreach (gpointer key, gpointer value, gpointer data) { pango_coverage_unref (value); } static PangoCoverage * pango_fb_font_get_coverage (PangoFont *font, const char *lang) { int i, n; PangoCoverage *retval; PangoMap *shape_map; GHashTable *coverage_hash; if(PANGO_FB_FONT(font)->coverage) return pango_coverage_ref(PANGO_FB_FONT(font)->coverage); shape_map = pango_fb_get_shaper_map(lang); coverage_hash = g_hash_table_new (g_str_hash, g_str_equal); retval = pango_coverage_new(); n = MIN(65536,PANGO_FB_FONT(font)->ftf->num_glyphs); for(i = 0; i < n; i++) { PangoCoverageLevel font_level; PangoMapEntry *map_entry; map_entry = pango_map_get_entry (shape_map, i); if (map_entry->info) { PangoCoverage *coverage; coverage = g_hash_table_lookup (coverage_hash, map_entry->info->id); if (!coverage) { PangoEngineShape *engine = (PangoEngineShape *)pango_map_get_engine (shape_map, i); coverage = engine->get_coverage (font, lang); g_hash_table_insert (coverage_hash, map_entry->info->id, coverage); } font_level = pango_coverage_get (coverage, i); if (font_level == PANGO_COVERAGE_EXACT && !map_entry->is_exact) font_level = PANGO_COVERAGE_APPROXIMATE; if (font_level != PANGO_COVERAGE_NONE) pango_coverage_set (retval, i, font_level); } } g_hash_table_foreach (coverage_hash, free_coverages_foreach, NULL); g_hash_table_destroy (coverage_hash); PANGO_FB_FONT(font)->coverage = pango_coverage_ref(retval); return retval; } static PangoEngineShape * pango_fb_font_find_shaper (PangoFont *font, const char *lang, guint32 ch) { PangoMap *shape_map = NULL; shape_map = pango_fb_get_shaper_map (lang); return (PangoEngineShape *)pango_map_get_engine (shape_map, ch); } #if 0 /* freetype.h doesn't declare it, doh */ EXPORT_FUNC(FT_Error) FT_New_GlyphSlot( FT_Face face, FT_GlyphSlot* aslot ); #endif void pango_fb_font_set_size(PangoFont *font) { PangoFBFont *fbf = (PangoFBFont *)font; if(PANGO_FB_FONT(font)->desc.size != GPOINTER_TO_UINT(fbf->ftf->generic.data)) { fbf->ftf->generic.data = GUINT_TO_POINTER(PANGO_FB_FONT(font)->desc.size); FT_Set_Char_Size(fbf->ftf, 0, (PANGO_FB_FONT(font)->desc.size << 6)/PANGO_SCALE, 72, 72); } } static void pango_fb_font_get_glyph_extents (PangoFont *font, PangoGlyph glyph, PangoRectangle *ink_rect, PangoRectangle *logical_rect) { PangoFBFont *fbf; PangoRectangle *my_extents; PangoFBGlyphInfo *gi; fbf = PANGO_FB_FONT(font); pango_fb_font_set_size(font); gi = pango_fb_font_get_glyph_info(font, glyph); my_extents = gi->extents; if(ink_rect) *ink_rect = my_extents[0]; if(logical_rect) *logical_rect = my_extents[1]; } static void pango_fb_font_get_metrics (PangoFont *font, const gchar *lang, PangoFontMetrics *metrics) { FT_Face ftf; ftf = PANGO_FB_FONT(font)->ftf; if(metrics) { metrics->ascent = ftf->ascender * PANGO_SCALE >> 6; metrics->descent = ftf->descender * PANGO_SCALE >> 6; } } /* The following array is supposed to contain enough text to tickle all necessary fonts for each * of the languages in the following. Yes, it's pretty lame. Not all of the languages * in the following have sufficient text to excercise all the accents for the language, and * there are obviously many more languages to include as well. */ #if 0 LangInfo lang_texts[] = { { "ar", "Arabic السلام عليكم" }, { "cs", "Czech (česky) Dobrý den" }, { "da", "Danish (Dansk) Hej, Goddag" }, { "el", "Greek (Ελληνικά) Γειά σας" }, { "en", "English Hello" }, { "eo", "Esperanto Saluton" }, { "es", "Spanish (Español) ¡Hola!" }, { "et", "Estonian Tere, Tervist" }, { "fi", "Finnish (Suomi) Hei" }, { "fr", "French (Français)" }, { "de", "German Grüß Gott" }, { "iw", "Hebrew שלום" }, { "il", "Italiano Ciao, Buon giorno" }, { "ja", "Japanese (日本語) こんにちは, コンニチハ" }, { "ko", "Korean (한글) 안녕하세요, 안녕하십니까" }, { "mt", "Maltese Ċaw, Saħħa" }, { "nl", "Nederlands, Vlaams Hallo, Dag" }, { "no", "Norwegian (Norsk) Hei, God dag" }, { "pl", "Polish Dzień dobry, Hej" }, { "ru", "Russian (Русский)" }, { "sk", "Slovak Dobrý deň" }, { "sv", "Swedish (Svenska) Hej, Goddag" }, { "tr", "Turkish (Türkçe) Merhaba" }, { "zh", "Chinese (中文,普通话,汉语)" } }; #endif /******** misc gdk tie-ins **********/ PangoContext * gdk_pango_context_get (void) { PangoContext *retval; static PangoFontMap *font_map = NULL; if(!font_map) font_map = pango_fb_font_map (); retval = pango_context_new(); pango_context_add_font_map (retval, font_map); return retval; }