static void lsm_dom_view_set_cairo_context (LsmDomView *view, cairo_t *cairo) { PangoContext *context; cairo_font_options_t *font_options; const cairo_font_options_t *current_font_options; cairo_surface_t *surface; cairo_surface_type_t type; g_return_if_fail (LSM_IS_DOM_VIEW (view)); if (view->cairo == cairo) return; if (view->cairo != NULL) { cairo_destroy (view->cairo); g_object_unref (view->pango_layout); } if (cairo == NULL) { view->cairo = NULL; view->pango_layout = NULL; return; } cairo_reference (cairo); view->cairo = cairo; view->pango_layout = pango_cairo_create_layout (cairo); surface = cairo_get_target (cairo); type = cairo_surface_get_type (surface); view->is_vector = (type == CAIRO_SURFACE_TYPE_SVG || type == CAIRO_SURFACE_TYPE_PDF || type == CAIRO_SURFACE_TYPE_PS); context = pango_layout_get_context (view->pango_layout); pango_cairo_context_set_resolution (context, 72); current_font_options = pango_cairo_context_get_font_options (context); if (current_font_options == NULL) font_options = cairo_font_options_create (); else font_options = cairo_font_options_copy (current_font_options); cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF); pango_cairo_context_set_font_options (context, font_options); cairo_font_options_destroy (font_options); }
FontPlatformData::FontPlatformData(const FontDescription& fontDescription, const AtomicString& familyName) : m_context(0) , m_font(0) , m_size(fontDescription.computedSize()) , m_syntheticBold(false) , m_syntheticOblique(false) , m_scaledFont(0) { FontPlatformData::init(); CString stored_family = familyName.string().utf8(); char const* families[] = { stored_family.data(), NULL }; switch (fontDescription.genericFamily()) { case FontDescription::SerifFamily: families[1] = "serif"; break; case FontDescription::SansSerifFamily: families[1] = "sans"; break; case FontDescription::MonospaceFamily: families[1] = "monospace"; break; case FontDescription::NoFamily: case FontDescription::StandardFamily: default: families[1] = "sans"; break; } PangoFontDescription* description = pango_font_description_new(); pango_font_description_set_absolute_size(description, fontDescription.computedSize() * PANGO_SCALE); // FIXME: Map all FontWeight values to Pango font weights. 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); #if PANGO_VERSION_CHECK(1,21,5) // deprecated in 1.21 m_context = pango_font_map_create_context(m_fontMap); #else m_context = pango_cairo_font_map_create_context(PANGO_CAIRO_FONT_MAP(m_fontMap)); #endif for (unsigned int i = 0; !m_font && i < G_N_ELEMENTS(families); i++) { pango_font_description_set_family(description, families[i]); pango_context_set_font_description(m_context, description); m_font = pango_font_map_load_font(m_fontMap, m_context, description); } #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); }
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); }