Pepper v2 Font API browser implementation.

webkit/glue/plugins/pepper_font.cc

+// Copyright (c) 2010 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 "build/build_config.h"
+
+#include "webkit/glue/plugins/pepper_font.h"
+
+#if defined(OS_LINUX)
+#include <unistd.h>
+#endif
+
+#include "base/logging.h"
+#include "third_party/ppapi/c/ppb_font.h"
+#include "webkit/glue/plugins/pepper_plugin_module.h"
+#include "webkit/glue/webkit_glue.h"
+
+namespace pepper {
+
+namespace {
+
+PP_Resource MatchFontWithFallback(PP_Module module_id,
+                                  const PP_FontDescription* description) {
+#if defined(OS_LINUX)
+  PluginModule* module = PluginModule::FromPPModule(module_id);
+  if (!module)
+    return NULL;
+
+  int fd = webkit_glue::MatchFontWithFallback(description->face,
+                                              description->weight >= 700,
+                                              description->italic,
+                                              description->charset);
+  if (fd == -1)
+    return NULL;
+
+  scoped_refptr<Font> font(new Font(module, fd));
+  font->AddRef();  // AddRef for the caller.
+
+  return font->GetResource();
+#else
+  // For trusted pepper plugins, this is only needed in Linux since font loading
+  // on Windows and Mac works through the renderer sandbox.
+  return false;
+#endif
+}
+
+bool IsFont(PP_Resource resource) {
+  return !!Resource::GetAs<Font>(resource).get();
+}
+
+bool GetFontTable(PP_Resource font_id,
+                  uint32_t table,
+                  void* output,
+                  uint32_t* output_length) {
+  scoped_refptr<Font> font(Resource::GetAs<Font>(font_id));
+  if (!font.get())
+    return false;
+
+  return font->GetFontTable(table, output, output_length);
+}
+
+const PPB_Font ppb_font = {
+  &MatchFontWithFallback,
+  &IsFont,
+  &GetFontTable,
+};
+
+}  // namespace
+
+Font::Font(PluginModule* module, int fd)
+    : Resource(module),
+      fd_(fd) {
+}
+
+Font::~Font() {
+#if defined (OS_LINUX)
+  close(fd_);
+#endif
+}
+
+// static
+const PPB_Font* Font::GetInterface() {
+  return &ppb_font;
+}
+
+bool Font::GetFontTable(uint32_t table,
+                        void* output,
+                        uint32_t* output_length) {
+#if defined(OS_LINUX)
+  size_t temp_size = static_cast<size_t>(*output_length);
+  bool rv = webkit_glue::GetFontTable(
+      fd_, table, static_cast<uint8_t*>(output), &temp_size);
+  *output_length = static_cast<uint32_t>(temp_size);
+  return rv;
+#else
+  return false;
+#endif
+}
+
+}  // namespace pepper