From 497ee87d5105fb3b6a957abdaf4754ab1d6c6533 Mon Sep 17 00:00:00 2001 From: Chun-wei Fan Date: Wed, 11 Nov 2020 20:15:25 +0800 Subject: PangoWin32: Initialize DirectWrite as well We want to start using DirectWrite to help us implement some features that are not that easily done with GDI/Uniscribe, via a GDI interop layer as provided by DirectWrite, and by creating and keeping track of the IDWriteFont's that are created from each of the LOGFONTs that we acquire by quering the fonts that is installed on the system. --- pango/pangowin32-fontmap.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) (limited to 'pango/pangowin32-fontmap.c') diff --git a/pango/pangowin32-fontmap.c b/pango/pangowin32-fontmap.c index 6bc10a7a..23902981 100644 --- a/pango/pangowin32-fontmap.c +++ b/pango/pangowin32-fontmap.c @@ -1588,12 +1588,19 @@ ff_name (int ff, char* num) } } +/* remove later... */ +extern GHashTable * +_pango_win32_acquire_script_locale_ht (void); + static void pango_win32_insert_font (PangoWin32FontMap *win32fontmap, LOGFONTW *lfp, gboolean is_synthetic) { LOGFONTW *lfp2 = NULL; + IDWriteGdiInterop *gdi_interop = _pango_win32_acquire_dwrite_gdi_interop (); + IDWriteLocalizedStrings *dwrite_result_str; + gboolean exists = FALSE; PangoFontDescription *description; PangoWin32Family *win32family; PangoWin32Face *win32face; @@ -1645,6 +1652,12 @@ pango_win32_insert_font (PangoWin32FontMap *win32fontmap, PING (("win32face created: %p for %S", win32face, lfp->lfFaceName)); win32face->logfontw = *lfp; + + if (IDWriteGdiInterop_CreateFontFromLOGFONT (gdi_interop, + &win32face->logfontw, + &win32face->dwrite_font) != S_OK) + g_warning ("Failed to create DirectWriteFont from LOGFONTW"); + win32face->description = description; win32face->coverage = NULL; @@ -1667,6 +1680,48 @@ pango_win32_insert_font (PangoWin32FontMap *win32fontmap, win32family->faces = g_slist_append (win32family->faces, win32face); + if (IDWriteFont_GetInformationalStrings (win32face->dwrite_font, + DWRITE_INFORMATIONAL_STRING_SUPPORTED_SCRIPT_LANGUAGE_TAG, + &dwrite_result_str, + &exists) != S_OK) + { + gchar *name = g_utf16_to_utf8 (lfp->lfFaceName, -1, NULL, NULL, NULL); + g_warning ("Failed to get supported languages of font %p (name: %s)", lfp, name); + g_free (name); + } + + if (exists) + { + gchar *name = g_utf16_to_utf8 (lfp->lfFaceName, -1, NULL, NULL, NULL); + guint num_langs = IDWriteLocalizedStrings_GetCount (dwrite_result_str); + guint i = 0; + GHashTable *ht_script_language = _pango_win32_acquire_script_locale_ht(); + + for (i = 0; i < num_langs; i ++) + { + guint strlength = 0; + wchar_t *str_utf16 = NULL; + gchar *str_utf8 = NULL; + GSList *langs = NULL; + IDWriteLocalizedStrings_GetStringLength (dwrite_result_str, i, &strlength); + str_utf16 = g_new0 (wchar_t, strlength + 1); + IDWriteLocalizedStrings_GetString (dwrite_result_str, i, str_utf16, strlength + 1); + str_utf8 = g_utf16_to_utf8 (str_utf16, -1, NULL, NULL, NULL); + langs = g_hash_table_lookup (ht_script_language, str_utf8); + if (langs != NULL) + { + GSList *p; + + for (p = g_slist_reverse (langs); p != NULL; p = p->next) + if (pango_language_from_string (p->data) == NULL) + g_print ("NULL!\n"); + } + g_free (str_utf8); + g_free (str_utf16); + } + g_free (name); + } + PING (("name=%s, length(faces)=%d", win32family->family_name, g_slist_length (win32family->faces))); } @@ -1763,6 +1818,8 @@ pango_win32_face_finalize (GObject *object) g_slist_free (win32face->cached_fonts); // g_slist_free_full (win32face->cached_fonts, g_object_unref); // This doesn't work. + if (win32face->dwrite_font != NULL) + IDWriteFont_Release (win32face->dwrite_font); G_OBJECT_CLASS (pango_win32_family_parent_class)->finalize (object); } -- cgit v1.2.1