Index: content/browser/renderer_host/compositor_resize_lock.h |
diff --git a/content/browser/renderer_host/compositor_resize_lock.h b/content/browser/renderer_host/compositor_resize_lock.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a49f6c5840516f41356190f37af1bc849b601ec3 |
--- /dev/null |
+++ b/content/browser/renderer_host/compositor_resize_lock.h |
@@ -0,0 +1,65 @@ |
+// 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. |
+ |
+#ifndef CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_RESIZE_LOCK_H_ |
+#define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_RESIZE_LOCK_H_ |
+ |
+#include "base/macros.h" |
+#include "base/memory/ref_counted.h" |
+#include "base/memory/weak_ptr.h" |
+#include "base/time/time.h" |
+#include "content/common/content_export.h" |
+#include "ui/compositor/compositor_lock.h" |
+#include "ui/gfx/geometry/size.h" |
+ |
+namespace content { |
+ |
+class CompositorResizeLockClient { |
+ public: |
+ virtual ~CompositorResizeLockClient() {} |
+ |
+ // Creates and returns a CompositorLock for the CompositoResizeLock to |
+ // hold. |
+ virtual std::unique_ptr<ui::CompositorLock> GetCompositorLock( |
+ ui::CompositorLockClient* client) = 0; |
+ |
+ // Called when the CompositorResizeLock ends. This can happen |
+ // before the CompositorResizeLock is destroyed if it times out. |
+ virtual void CompositorResizeLockEnded() = 0; |
+}; |
+ |
+// Used to prevent further resizes while a resize is pending. |
+class CONTENT_EXPORT CompositorResizeLock |
+ : NON_EXPORTED_BASE(public ui::CompositorLockClient) { |
+ public: |
+ CompositorResizeLock(CompositorResizeLockClient* client, |
+ const gfx::Size& new_size); |
+ ~CompositorResizeLock() override; |
+ |
+ // Returns |true| if the call locks the compositor, or false if it was ever |
+ // locked/unlocked. |
+ bool Lock(); |
+ |
+ // Releases the lock on the compositor without releasing the whole resize |
+ // lock. The client is not told about this. If called before locking, it will |
+ // prevent locking from happening. |
+ void UnlockCompositor(); |
+ |
+ const gfx::Size& expected_size() const { return expected_size_; } |
+ |
+ private: |
+ // ui::CompositorLockClient implementation. |
+ void CompositorLockTimedOut() override; |
+ |
+ CompositorResizeLockClient* client_; |
+ const gfx::Size expected_size_; |
+ std::unique_ptr<ui::CompositorLock> compositor_lock_; |
+ bool unlocked_ = false; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(CompositorResizeLock); |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_RESIZE_LOCK_AURA_H_ |