Introduce PPB_Flash_Font.

ppapi/cpp/private/flash_font.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/cpp/private/flash_font.h"
+
+#include "ppapi/c/private/ppb_pdf.h"
+#include "ppapi/cpp/instance_handle.h"
+#include "ppapi/cpp/module_impl.h"
+
+namespace pp {
+
+namespace {
+
+// TODO(yzshen): Once PPB_Flash_Font gets to the stable channel, we can remove
+// the code of using PPB_PDF in this file.
+template <> const char* interface_name<PPB_PDF>() {
+  return PPB_PDF_INTERFACE;
+}
+
+template <> const char* interface_name<PPB_Flash_Font_0_1>() {
+  return PPB_FLASH_FONT_INTERFACE_0_1;
+}
+
+class FontFile : public Resource {
+ public:
+  FontFile(PassRef, PP_Resource resource) : Resource(PASS_REF, resource) {
+  }
+
+  virtual ~FontFile() {}
+};
+
+}  // namespace
+
+namespace flash {
+
+// static
+bool Font::IsAvailable() {
+  return has_interface<PPB_PDF>() || has_interface<PPB_Flash_Font_0_1>();
+}
+
+// static
+Resource Font::GetFontFileWithFallback(
+    const InstanceHandle& instance,
+    const PP_FontDescription_Dev* description,
+    PP_PrivateFontCharset charset) {
+  if (has_interface<PPB_Flash_Font_0_1>()) {
+    return FontFile(PASS_REF,
+        get_interface<PPB_Flash_Font_0_1>()->GetFontFileWithFallback(
+            instance.pp_instance(), description, charset));
+  }
+  if (has_interface<PPB_PDF>()) {
+    return FontFile(PASS_REF,
+        get_interface<PPB_PDF>()->GetFontFileWithFallback(
+            instance.pp_instance(), description, charset));
+  }
+  return Resource();
+}
+
+// static
+bool Font::GetFontTableForPrivateFontFile(const Resource& font_file,
+                                          uint32_t table,
+                                          void* output,
+                                          uint32_t* output_length) {
+  if (has_interface<PPB_Flash_Font_0_1>()) {
+    return !!get_interface<PPB_Flash_Font_0_1>()->
+        GetFontTableForPrivateFontFile(
+            font_file.pp_resource(), table, output, output_length);
+  }
+  if (has_interface<PPB_PDF>()) {
+    return get_interface<PPB_PDF>()->GetFontTableForPrivateFontFile(
+        font_file.pp_resource(), table, output, output_length);
+  }
+  return false;
+}
+
+}  // namespace flash
+}  // namespace pp