static VALUE
rg_load_fontset(VALUE self, VALUE context, VALUE desc, VALUE lang)
{
return GOBJ2RVAL(pango_font_map_load_fontset(_SELF(self),
RVAL2PANGOCONTEXT(context),
RVAL2PANGOFONTDESCRIPTION(desc),
RVAL2PANGOLANGUAGE(lang)));
}
void glyph_cache_set_font(TGlyphCache *cache, PangoFontDescription *font_desc)
{
PangoFontMap *font_map;
PangoFontMetrics *metrics;
if (cache->hash) {
g_hash_table_destroy(cache->hash);
g_object_unref(cache->font_set);
}
cache->hash = g_hash_table_new_full(NULL, NULL, NULL, glyph_destroy_gfi);
font_map = pango_xft_get_font_map(
GDK_DISPLAY_XDISPLAY(cache->display),
GDK_SCREEN_XNUMBER(cache->screen)
);
g_object_ref (font_map);
cache->font_set = pango_font_map_load_fontset(
font_map,
cache->context,
font_desc,
cache->lang
);
g_object_unref(font_map);
font_map = NULL;
metrics = pango_fontset_get_metrics(cache->font_set);
pango_font_metrics_ref(metrics);
cache->ascent = pango_font_metrics_get_ascent(metrics);
cache->descent = pango_font_metrics_get_descent(metrics);
cache->width = pango_font_metrics_get_approximate_digit_width(metrics);
cache->height = cache->ascent + cache->descent;
if (cache->width <= 0) {
fprintf (stderr, "Warning: cache->width = %d\n", cache->width);
cache->width = cache->height / 2;
}
pango_font_metrics_unref(metrics);
}
FontPlatformData::FontPlatformData(const FontDescription& fontDescription, const UChar *characters, int length)
: m_context(0)
, m_font(0)
, m_size(fontDescription.computedSize())
, m_syntheticBold(false)
, m_syntheticOblique(false)
, m_scaledFont(0)
{
FontPlatformData::init();
const UChar character = characters[0];
char const *family;
switch (fontDescription.genericFamily()) {
case FontDescription::SerifFamily:
family = "serif";
break;
case FontDescription::SansSerifFamily:
family = "sans";
break;
case FontDescription::MonospaceFamily:
family = "monospace";
break;
case FontDescription::NoFamily:
case FontDescription::StandardFamily:
default:
family = "sans";
break;
}
m_context = pango_cairo_font_map_create_context(PANGO_CAIRO_FONT_MAP(m_fontMap));
PangoFontDescription* description = pango_font_description_new();
pango_font_description_set_absolute_size(description, fontDescription.computedSize() * PANGO_SCALE);
if (fontDescription.weight() >= FontWeight600)
pango_font_description_set_weight(description, PANGO_WEIGHT_BOLD);
if (fontDescription.italic())
pango_font_description_set_style(description, PANGO_STYLE_ITALIC);
pango_font_description_set_family(description, family);
pango_context_set_font_description(m_context, description);
PangoFontset *fset = pango_font_map_load_fontset (m_fontMap, m_context, description, NULL);
// Get the font from the fontset which contains the best glyph for this character
m_font = pango_fontset_get_font(fset, (guint)character);
#if PANGO_VERSION_CHECK(1,18,0)
if (m_font)
m_scaledFont = cairo_scaled_font_reference(pango_cairo_font_get_scaled_font(PANGO_CAIRO_FONT(m_font)));
#else
// This compatibility code for older versions of Pango is not well-tested.
if (m_font) {
PangoFcFont* fcfont = PANGO_FC_FONT(m_font);
cairo_font_face_t* face = cairo_ft_font_face_create_for_pattern(fcfont->font_pattern);
double size;
if (FcPatternGetDouble(fcfont->font_pattern, FC_PIXEL_SIZE, 0, &size) != FcResultMatch)
size = 12.0;
cairo_matrix_t fontMatrix;
cairo_matrix_init_scale(&fontMatrix, size, size);
cairo_font_options_t* fontOptions;
if (pango_cairo_context_get_font_options(m_context))
fontOptions = cairo_font_options_copy(pango_cairo_context_get_font_options(m_context));
else
fontOptions = cairo_font_options_create();
cairo_matrix_t ctm;
cairo_matrix_init_identity(&ctm);
m_scaledFont = cairo_scaled_font_create(face, &fontMatrix, &ctm, fontOptions);
cairo_font_options_destroy(fontOptions);
cairo_font_face_destroy(face);
}
#endif
pango_font_description_free(description);
}
