| // Copyright 2014 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 "ui/base/cocoa/remote_layer_api.h" |
| |
| #include "base/command_line.h" |
| #include "base/mac/mac_util.h" |
| #include "ui/base/ui_base_switches.h" |
| |
| #include <objc/runtime.h> |
| |
| namespace ui { |
| |
| bool RemoteLayerAPISupported() { |
| // This API only works on Mac OS 10.9 and later. |
| if (!base::mac::IsOSMavericksOrLater()) |
| return false; |
| |
| bool disabled_at_command_line = |
| CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kDisableRemoteCoreAnimation); |
| if (disabled_at_command_line) |
| return false; |
| |
| // Verify the GPU process interfaces are present. |
| static Class caContextClass = NSClassFromString(@"CAContext"); |
| if (!caContextClass) |
| return false; |
| |
| // Note that because the contextId and layer properties are dynamic, |
| // instancesRespondToSelector will return NO for them. |
| static bool caContextClassValid = |
| [caContextClass respondsToSelector: |
| @selector(contextWithCGSConnection:options:)] && |
| class_getProperty(caContextClass, "contextId") && |
| class_getProperty(caContextClass, "layer"); |
| if (!caContextClassValid) |
| return false; |
| |
| // Verify the browser process interfaces are present. |
| static Class caLayerHostClass = NSClassFromString(@"CALayerHost"); |
| if (!caLayerHostClass) |
| return false; |
| |
| static bool caLayerHostClassValid = |
| [caLayerHostClass instancesRespondToSelector:@selector(contextId)] && |
| [caLayerHostClass instancesRespondToSelector:@selector(setContextId:)]; |
| if (!caLayerHostClassValid) |
| return false; |
| |
| // If everything is there, we should be able to use the API. |
| return true; |
| } |
| |
| } // namespace |
| |