Add limited support for CSS 'font-face' rule.

Basically, any ttf or otf file found will be loaded but no custom matching is
done nor is the 'font-family' menu updated.

3 files changed, 88 insertions, 1 deletions

diff --git a/src/libnrtype/FontFactory.cpp b/src/libnrtype/FontFactory.cpp
index 95537734d..2b1087eec 100644
--- a/src/libnrtype/FontFactory.cpp
+++ b/src/libnrtype/FontFactory.cpp
@@ -949,6 +949,38 @@ void font_factory::AddFontsDir(char const *utf8dir)
 #endif
 }
 
+void font_factory::AddFontFile(char const *utf8file)
+{
+#ifdef USE_PANGO_WIN32
+    g_info("Adding additional font only supported for fontconfig backend.");
+#else
+    if (!Inkscape::IO::file_test(utf8file, G_FILE_TEST_IS_REGULAR)) {
+        g_warning("Font file '%s' does not exist and will be ignored.", utf8file);
+        return;
+    }
+
+    gchar *file;
+# ifdef WIN32
+    file = g_win32_locale_filename_from_utf8(utf8file);
+# else
+    file = g_filename_from_utf8(utf8file, -1, NULL, NULL, NULL);
+# endif
+
+    FcConfig *conf = NULL;
+# if PANGO_VERSION_CHECK(1,38,0)
+    pango_fc_font_map_get_config(PANGO_FC_FONT_MAP(fontServer));
+# endif
+    FcBool res = FcConfigAppFontAddFile(conf, (FcChar8 const *)file);
+    if (res = FcTrue) {
+        g_info("Font file '%s' added successfully.", utf8file);
+    } else {
+        g_warning("Could not add font file '%s'.", utf8file);
+    }
+
+    g_free(file);
+#endif
+}
+
 /*
   Local Variables:
   mode:c++
diff --git a/src/libnrtype/FontFactory.h b/src/libnrtype/FontFactory.h
index c273be2f4..12260f99a 100644
--- a/src/libnrtype/FontFactory.h
+++ b/src/libnrtype/FontFactory.h
@@ -139,6 +139,9 @@ public:
     /// Add a directory from which to include additional fonts
     void                  AddFontsDir(char const *utf8dir);
 
+    /// Add a an additional font.
+    void                  AddFontFile(char const *utf8file);
+
 private:
     void*                 loadedPtr;
 
diff --git a/src/sp-style-elem.cpp b/src/sp-style-elem.cpp
index 2deaccad0..da02d4ef1 100644
--- a/src/sp-style-elem.cpp
+++ b/src/sp-style-elem.cpp
@@ -12,6 +12,9 @@
 #include <iostream>
 #include <fstream>
 
+// For font-rule
+#include "libnrtype/FontFactory.h"
+
 using Inkscape::XML::TEXT_NODE;
 
 SPStyleElem::SPStyleElem() : SPObject() {
@@ -308,12 +311,61 @@ end_font_face_cb(CRDocHandler *a_handler)
                   unsigned(font_face_rule->type));
     }
 
-    std::cout << "end_font_face_cb: font face rule unsupported." << std::endl;
+    std::cout << "end_font_face_cb: font face rule limited support." << std::endl;
     cr_declaration_dump (font_face_rule->kind.font_face_rule->decl_list, stdout, 2, TRUE);
     printf ("\n");
 
+    // Get document
+    SPDocument* document = parse_tmp.document;
+    if (!document) {
+        std::cerr << "end_font_face_cb: No document!" << std::endl;
+        return;
+    }
+    if (!document->getURI()) {
+        std::cerr << "end_font_face_cb: Document URI is NULL" << std::endl;
+        return;
+    }
+
+    // Add ttf or otf fonts.
+    CRDeclaration const *cur = NULL;
+    for (cur = font_face_rule->kind.font_face_rule->decl_list; cur; cur = cur->next) {
+        if (cur->property &&
+            cur->property->stryng &&
+            cur->property->stryng->str &&
+            strcmp(cur->property->stryng->str, "src") == 0 ) {
+
+            if (cur->value &&
+                cur->value->content.str &&
+                cur->value->content.str->stryng &&
+                cur->value->content.str->stryng->str) {
+
+                Glib::ustring value = cur->value->content.str->stryng->str;
+                std::size_t found = value.find_last_of("ttf");
+
+                if (value.rfind("ttf") == (value.length() - 3) ||
+                    value.rfind("otf") == (value.length() - 3)) {
+
+                    // Get file
+                    Glib::ustring ttf_file =
+                        Inkscape::IO::Resource::get_filename (document->getURI(), value);
+
+                    if (!ttf_file.empty()) {
+                        font_factory *factory = font_factory::Default();
+                        factory->AddFontFile( ttf_file.c_str() );
+                        std::cout << "end_font_face_cb: Added font: " << ttf_file << std::endl;
+
+                        // FIX ME: Need to refresh font list.
+                    } else {
+                        std::cout << "end_font_face_cb: Failed to add: " << value << std::endl;
+                    }
+                }
+            }
+        }
+    }
+
     parse_tmp.currStmt = NULL;
     parse_tmp.stmtType = NO_STMT;
+
 }
 
 static void