Mac: More pluming for OOP font loading

chrome/common/render_messages_internal.h

 // 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <map>
 #include <string>
@@ skipping 21 matching lines @@
 #include "ipc/ipc_message_macros.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "webkit/glue/dom_operations.h"
 #include "webkit/glue/form_field.h"
 #include "webkit/glue/webcursor.h"
 
 #if defined(OS_POSIX)
 #include "base/file_descriptor_posix.h"
 #endif
 
+#if defined(OS_MACOSX)
+#include "chrome/common/font_descriptor_mac.h"
+#endif
+
 // TODO(mpcomplete): rename ViewMsg and ViewHostMsg to something that makes
 // more sense with our current design.
 
 // IPC_MESSAGE macros choke on extra , in the std::map, when expanding. We need
 // to typedef it to avoid that.
 // Substitution map for l10n messages.
 typedef std::map<std::string, std::string> SubstitutionMap;
 
 //-----------------------------------------------------------------------------
 // RenderView messages
@@ skipping 1374 matching lines @@
                               Clipboard::Buffer  /* buffer */,
                               std::string /* result */)
   IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_ClipboardReadHTML,
                               Clipboard::Buffer  /* buffer */,
                               string16 /* markup */,
                               GURL /* url */)
 
 #if defined(OS_MACOSX)
   IPC_MESSAGE_CONTROL1(ViewHostMsg_ClipboardFindPboardWriteStringAsync,
       string16 /* text */)
+
+  // Request that the browser load a font into shared memory for us.
+  IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_LoadFont,

[agl, 2010/06/15 14:10:15]

Am I just being dumb, or is the implementation of this message missing from this
CL?

[jeremy, 2010/06/15 14:26:55]

Due to the way the WebKit and Chrome code interact I can't land the
implementation together with the definition since it depends on code on the
WebKit side.

But this basically makes a straightforward call to font_loader.mm .

+                             FontDescriptor /* font to load */,
+                             uint32 /* buffer size */,
+                             base::SharedMemoryHandle /* font data */)
 #endif
 
 #if defined(OS_WIN)
   // Request that the given font be loaded by the browser so it's cached by the
   // OS. Please see ResourceMessageFilter::OnPreCacheFont for details.
   IPC_SYNC_MESSAGE_CONTROL1_0(ViewHostMsg_PreCacheFont,
                               LOGFONT /* font data */)
 #endif  // defined(OS_WIN)
 
   // Returns WebScreenInfo corresponding to the view.
@@ skipping 1038 matching lines @@
   IPC_MESSAGE_CONTROL2(ViewHostMsg_Geolocation_Resume,
                        int /* render_view_id */,
                        int /* bridge_id */)
 
   // Send the tree of accessibility data to the browser, where it's cached
   // in order to respond to OS accessibility queries immediately.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_AccessibilityTree,
                       webkit_glue::WebAccessibility)
 
 IPC_END_MESSAGES(ViewHost)