// Copyright (c) 2011 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 UI_GFX_MAC_SCOPED_NS_DISABLE_SCREEN_UPDATES_H_
#define UI_GFX_MAC_SCOPED_NS_DISABLE_SCREEN_UPDATES_H_
#import <Cocoa/Cocoa.h>
#include "base/basictypes.h"
namespace gfx {
// A stack-based class to disable Cocoa screen updates. When instantiated, it
// disables screen updates and enables them when destroyed. Update disabling
// can be nested, and there is a time-maximum (about 1 second) after which
// Cocoa will automatically re-enable updating. This class doesn't attempt to
// overrule that.
class ScopedNSDisableScreenUpdates {
public:
ScopedNSDisableScreenUpdates() {
NSDisableScreenUpdates();
}
~ScopedNSDisableScreenUpdates() {
NSEnableScreenUpdates();
}
private:
DISALLOW_COPY_AND_ASSIGN(ScopedNSDisableScreenUpdates);
};
} // namespace gfx
#endif // UI_GFX_MAC_SCOPED_NS_DISABLE_SCREEN_UPDATES_H_