diff options
Diffstat (limited to 'pango/pangowin32-dwrite-fontmap.cpp')
| -rw-r--r-- | pango/pangowin32-dwrite-fontmap.cpp | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/pango/pangowin32-dwrite-fontmap.cpp b/pango/pangowin32-dwrite-fontmap.cpp index dd2f506a..ae1d11af 100644 --- a/pango/pangowin32-dwrite-fontmap.cpp +++ b/pango/pangowin32-dwrite-fontmap.cpp @@ -204,6 +204,222 @@ pango_win32_dwrite_font_is_monospace (gpointer dwrite_font, return result; } +static PangoStretch +util_to_pango_stretch (DWRITE_FONT_STRETCH stretch) +{ + PangoStretch pango_stretch = PANGO_STRETCH_NORMAL; + + switch (stretch) + { + case DWRITE_FONT_STRETCH_ULTRA_CONDENSED: + pango_stretch = PANGO_STRETCH_ULTRA_CONDENSED; + break; + case DWRITE_FONT_STRETCH_EXTRA_CONDENSED: + pango_stretch = PANGO_STRETCH_EXTRA_CONDENSED; + break; + case DWRITE_FONT_STRETCH_CONDENSED: + pango_stretch = PANGO_STRETCH_CONDENSED; + break; + case DWRITE_FONT_STRETCH_SEMI_CONDENSED: + pango_stretch = PANGO_STRETCH_SEMI_CONDENSED; + break; + case DWRITE_FONT_STRETCH_NORMAL: + /* also DWRITE_FONT_STRETCH_MEDIUM */ + pango_stretch = PANGO_STRETCH_NORMAL; + break; + case DWRITE_FONT_STRETCH_SEMI_EXPANDED: + pango_stretch = PANGO_STRETCH_SEMI_EXPANDED; + break; + case DWRITE_FONT_STRETCH_EXPANDED: + pango_stretch = PANGO_STRETCH_EXPANDED; + break; + case DWRITE_FONT_STRETCH_EXTRA_EXPANDED: + pango_stretch = PANGO_STRETCH_EXTRA_EXPANDED; + break; + case DWRITE_FONT_STRETCH_ULTRA_EXPANDED: + pango_stretch = PANGO_STRETCH_ULTRA_EXPANDED; + break; + case DWRITE_FONT_STRETCH_UNDEFINED: + default: + pango_stretch = PANGO_STRETCH_NORMAL; + } + + return pango_stretch; +} + +static PangoStyle +util_to_pango_style (DWRITE_FONT_STYLE style) +{ + switch (style) + { + case DWRITE_FONT_STYLE_NORMAL: + return PANGO_STYLE_NORMAL; + case DWRITE_FONT_STYLE_OBLIQUE: + return PANGO_STYLE_OBLIQUE; + case DWRITE_FONT_STYLE_ITALIC: + return PANGO_STYLE_ITALIC; + default: + g_assert_not_reached (); + return PANGO_STYLE_NORMAL; + } +} + +static int +util_map_weight (int weight) +{ + if G_UNLIKELY (weight < 100) + weight = 100; + + if G_UNLIKELY (weight > 1000) + weight = 1000; + + return weight; +} + +static PangoWeight +util_to_pango_weight (DWRITE_FONT_WEIGHT weight) +{ + /* DirectWrite weight values range from 1 to 999, Pango weight values + * range from 100 to 1000. */ + + return (PangoWeight) util_map_weight (weight); +} + +static PangoVariant +util_to_pango_variant (IDWriteFont *font) +{ + PangoVariant variant = PANGO_VARIANT_NORMAL; + + return variant; +} + +static PangoFontDescription* +util_get_pango_font_description (IDWriteFont *font, + const char *family_name) +{ + DWRITE_FONT_STRETCH stretch = font->GetStretch (); + DWRITE_FONT_STYLE style = font->GetStyle (); + DWRITE_FONT_WEIGHT weight = font->GetWeight (); + PangoFontDescription *description; + + description = pango_font_description_new (); + pango_font_description_set_family (description, family_name); + + pango_font_description_set_stretch (description, util_to_pango_stretch (stretch)); + pango_font_description_set_variant (description, util_to_pango_variant (font)); + pango_font_description_set_style (description, util_to_pango_style (style)); + pango_font_description_set_weight (description, util_to_pango_weight (weight)); + + return description; +} + +static char* +util_free_to_string (IDWriteLocalizedStrings *strings) +{ + char *string = NULL; + HRESULT hr; + + if (strings->GetCount() > 0) + { + UINT32 index = 0; + BOOL exists = FALSE; + UINT32 length = 0; + + hr = strings->FindLocaleName (L"en-us", &index, &exists); + if (FAILED (hr) || !exists || index == UINT32_MAX) + index = 0; + + hr = strings->GetStringLength (index, &length); + if (SUCCEEDED (hr) && length > 0) + { + gunichar2 *string_utf16 = g_new (gunichar2, length + 1); + + hr = strings->GetString (index, (wchar_t*) string_utf16, length + 1); + if (SUCCEEDED (hr)) + string = g_utf16_to_utf8 (string_utf16, -1, NULL, NULL, NULL); + + g_free (string_utf16); + } + } + + strings->Release (); + + return string; +} + +static char* +util_dwrite_get_font_family_name (IDWriteFontFamily *family) +{ + IDWriteLocalizedStrings *strings = NULL; + HRESULT hr; + + hr = family->GetFamilyNames (&strings); + if (FAILED (hr) || strings == NULL) + { + g_warning ("IDWriteFontFamily::GetFamilyNames failed with error code %x", (unsigned) hr); + return NULL; + } + + return util_free_to_string (strings); +} + +static char* +util_dwrite_get_font_variant_name (IDWriteFont *font) +{ + IDWriteLocalizedStrings *strings = NULL; + HRESULT hr; + + hr = font->GetFaceNames (&strings); + if (FAILED (hr) || strings == NULL) + { + g_warning ("IDWriteFont::GetFaceNames failed with error code %x", (unsigned) hr); + return NULL; + } + + return util_free_to_string (strings); +} + +PangoFontDescription * +pango_win32_font_description_from_logfontw_dwrite (const LOGFONTW *logfontw) +{ + PangoFontDescription *desc = NULL; + IDWriteFont *font = NULL; + HRESULT hr; + gchar *family; + PangoStyle style; + PangoVariant variant; + PangoWeight weight; + PangoStretch stretch; + PangoWin32DWriteItems *dwrite_items; + + dwrite_items = pango_win32_init_direct_write (); + if (dwrite_items == NULL) + return NULL; + + hr = dwrite_items->gdi_interop->CreateFontFromLOGFONT (logfontw, &font); + + if (SUCCEEDED (hr) && font != NULL) + { + IDWriteFontFamily *family = NULL; + + hr = font->GetFontFamily (&family); + + if (SUCCEEDED (hr) && family != NULL) + { + char *family_name = util_dwrite_get_font_family_name (family); + + if (family_name != NULL) + desc = util_get_pango_font_description (font, family_name); + + family->Release (); + } + + font->Release (); + } + + return desc; +} + void pango_win32_dwrite_font_release (gpointer dwrite_font) { |