diff options
Diffstat (limited to 'pango/pangox.c')
| -rw-r--r-- | pango/pangox.c | 196 |
1 files changed, 171 insertions, 25 deletions
diff --git a/pango/pangox.c b/pango/pangox.c index 94b70297..773c7d03 100644 --- a/pango/pangox.c +++ b/pango/pangox.c @@ -20,6 +20,7 @@ */ #include <X11/Xlib.h> +#include "modules.h" #include "pangox.h" #include <ctype.h> #include <math.h> @@ -149,12 +150,19 @@ static void pango_x_font_map_list_fonts (PangoFontMap *fontmap, PangoFontDescription ***descs, int *n_descs); +static void pango_x_font_destroy (PangoFont *font); +static PangoFontDescription *pango_x_font_describe (PangoFont *font); +static PangoCoverage * pango_x_font_get_coverage (PangoFont *font, + const char *lang); +static PangoEngineShape * pango_x_font_find_shaper (PangoFont *font, + const char *lang, + guint32 ch); + static PangoXSubfontInfo * pango_x_find_subfont (PangoFont *font, PangoXSubfont subfont_index); static XCharStruct * pango_x_get_per_char (PangoFont *font, PangoXSubfontInfo *subfont, guint16 char_index); -static void pango_x_font_destroy (PangoFont *font); static gboolean pango_x_find_glyph (PangoFont *font, PangoGlyph glyph, PangoXSubfontInfo **subfont_return, @@ -172,7 +180,10 @@ static void pango_x_insert_font (PangoXFontMap *fontmap, static GList *fontmaps; PangoFontClass pango_x_font_class = { - pango_x_font_destroy + pango_x_font_destroy, + pango_x_font_describe, + pango_x_font_get_coverage, + pango_x_font_find_shaper }; PangoFontMapClass pango_x_font_map_class = { @@ -873,6 +884,30 @@ name_for_charset (char *xlfd, char *charset) return result; } +static PangoXSubfont +pango_x_insert_subfont (PangoFont *font, const char *xlfd) +{ + PangoXFont *xfont = (PangoXFont *)font; + PangoXSubfontInfo *info; + + info = g_new (PangoXSubfontInfo, 1); + + info->xlfd = g_strdup (xlfd); + info->font_struct = NULL; + + xfont->n_subfonts++; + + if (xfont->n_subfonts > xfont->max_subfonts) + { + xfont->max_subfonts *= 2; + xfont->subfonts = g_renew (PangoXSubfontInfo *, xfont->subfonts, xfont->max_subfonts); + } + + xfont->subfonts[xfont->n_subfonts - 1] = info; + + return xfont->n_subfonts; +} + /** * pango_x_list_subfonts: * @font: a PangoFont @@ -911,7 +946,7 @@ pango_x_list_subfonts (PangoFont *font, for (i = 0; i < xfont->n_fonts; i++) { - PangoXSubfontInfo *info = NULL; + PangoXSubfont subfont = 0; char *xlfd = name_for_charset (xfont->fonts[i], charsets[j]); if (xlfd) @@ -919,31 +954,13 @@ pango_x_list_subfonts (PangoFont *font, int count; char **names = XListFonts (xfont->display, xlfd, 1, &count); if (count > 0) - { - info = g_new (PangoXSubfontInfo, 1); - - info->xlfd = g_strdup (names[0]); - info->font_struct = NULL; - } - + subfont = pango_x_insert_subfont (font, names[0]); + + XFreeFontNames (names); g_free (xlfd); } - if (info) - { - xfont->n_subfonts++; - - if (xfont->n_subfonts > xfont->max_subfonts) - { - xfont->max_subfonts *= 2; - xfont->subfonts = g_renew (PangoXSubfontInfo *, xfont->subfonts, xfont->max_subfonts); - } - - xfont->subfonts[xfont->n_subfonts - 1] = info; - subfont_lists[j][i] = xfont->n_subfonts; - } - else - subfont_lists[j][i] = 0; + subfont_lists[j][i] = subfont; } g_hash_table_insert (xfont->subfonts_by_charset, g_strdup (charsets[j]), subfont_lists[j]); @@ -1015,6 +1032,93 @@ pango_x_font_destroy (PangoFont *font) g_free (font); } +static PangoFontDescription * +pango_x_font_describe (PangoFont *font) +{ + /* FIXME: implement */ + return NULL; +} + +static void +free_coverages_foreach (gpointer key, + gpointer value, + gpointer data) +{ + pango_coverage_destroy (value); +} + +static PangoCoverage * +pango_x_font_get_coverage (PangoFont *font, + const char *lang) +{ + guint32 ch; + PangoMap *shape_map; + PangoSubmap *submap; + PangoMapEntry *entry; + PangoCoverage *coverage; + PangoCoverage *result; + PangoCoverageLevel font_level; + GHashTable *coverage_hash; + + result = pango_coverage_new (); + + coverage_hash = g_hash_table_new (g_str_hash, g_str_equal); + + shape_map = _pango_find_map (lang, PANGO_ENGINE_TYPE_SHAPE, + PANGO_RENDER_TYPE_X); + + for (ch = 0; ch < 65536; ch++) + { + submap = &shape_map->submaps[ch / 256]; + entry = submap->is_leaf ? &submap->d.entry : &submap->d.leaves[ch % 256]; + + if (entry->info) + { + coverage = g_hash_table_lookup (coverage_hash, entry->info->id); + if (!coverage) + { + PangoEngineShape *engine = (PangoEngineShape *)_pango_load_engine (entry->info->id); + coverage = engine->get_coverage (font, lang); + g_hash_table_insert (coverage_hash, entry->info->id, coverage); + } + + font_level = pango_coverage_get (coverage, ch); + if (font_level == PANGO_COVERAGE_EXACT && !entry->is_exact) + font_level = PANGO_COVERAGE_APPROXIMATE; + + if (font_level != PANGO_COVERAGE_NONE) + pango_coverage_set (result, ch, font_level); + } + } + + g_hash_table_foreach (coverage_hash, free_coverages_foreach, NULL); + g_hash_table_destroy (coverage_hash); + + return result; +} + +static PangoEngineShape * +pango_x_font_find_shaper (PangoFont *font, + const gchar *lang, + guint32 ch) +{ + PangoMap *shape_map = NULL; + PangoSubmap *submap; + PangoMapEntry *entry; + + shape_map = _pango_find_map (lang, PANGO_ENGINE_TYPE_SHAPE, + PANGO_RENDER_TYPE_X); + + submap = &shape_map->submaps[ch / 256]; + entry = submap->is_leaf ? &submap->d.entry : &submap->d.leaves[ch % 256]; + + /* FIXME: check entry->is_exact */ + if (entry->info) + return (PangoEngineShape *)_pango_load_engine (entry->info->id); + else + return NULL; +} + /* Utility functions */ static XFontStruct * @@ -1120,3 +1224,45 @@ pango_x_find_glyph (PangoFont *font, else return FALSE; } + +/** + * pango_x_get_unknown_glyph: + * @font: a #PangoFont + * + * Return the index of a glyph suitable for drawing unknown characters. + * + * Return value: a glyph index into @font + **/ +PangoGlyph +pango_x_get_unknown_glyph (PangoFont *font) +{ + PangoXFont *xfont = (PangoXFont *)font; + + /* The strategy here is to find _a_ X font, any X font in the fontset, and + * then get the unknown glyph for that font. + */ + + g_return_val_if_fail (font != 0, 0); + g_return_val_if_fail (xfont->n_fonts != 0, 0); + + if (xfont->n_subfonts == 0) + { + int count; + char **names = XListFonts (xfont->display, xfont->fonts[0], 1, &count); + + if (count > 0) + pango_x_insert_subfont (font, names[0]); + + XFreeFontNames (names); + } + + if (xfont->n_subfonts > 0) + { + XFontStruct *font_struct = pango_x_get_font_struct (font, xfont->subfonts[0]); + + if (font_struct) + return PANGO_X_MAKE_GLYPH (1,font_struct->default_char); + } + + return 0; +} |