1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/base/cocoa/remote_layer_api.h"
7 #include "base/command_line.h"
8 #include "base/mac/mac_util.h"
9 #include "ui/base/ui_base_switches.h"
11 #include <objc/runtime.h>
15 bool RemoteLayerAPISupported() {
16 // This API only works on Mac OS 10.9 and later.
17 if (!base::mac::IsOSMavericksOrLater())
20 bool disabled_at_command_line =
21 base::CommandLine::ForCurrentProcess()->HasSwitch(
22 switches::kDisableRemoteCoreAnimation);
23 if (disabled_at_command_line)
26 // Verify the GPU process interfaces are present.
27 static Class caContextClass = NSClassFromString(@"CAContext");
31 // Note that because the contextId and layer properties are dynamic,
32 // instancesRespondToSelector will return NO for them.
33 static bool caContextClassValid =
34 [caContextClass respondsToSelector:
35 @selector(contextWithCGSConnection:options:)] &&
36 class_getProperty(caContextClass, "contextId") &&
37 class_getProperty(caContextClass, "layer");
38 if (!caContextClassValid)
41 // Verify the browser process interfaces are present.
42 static Class caLayerHostClass = NSClassFromString(@"CALayerHost");
43 if (!caLayerHostClass)
46 static bool caLayerHostClassValid =
47 [caLayerHostClass instancesRespondToSelector:@selector(contextId)] &&
48 [caLayerHostClass instancesRespondToSelector:@selector(setContextId:)];
49 if (!caLayerHostClassValid)
52 // If everything is there, we should be able to use the API.