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chromium/base/scoped_nsdisable_screen_updates.h
pinkerton@chromium.org d233fb5219 Add a stack-based class for property disabling and re-enabling screen updating without epic fail. Fixes issues where we weren't re-enabling updates in many cases which caused both jank and resize issues.
BUG=13476
TEST=closing windows shouldn't have jank regardless of the # of tabs. Resizing a window shouldn't explode visually in the chrome.
Review URL: http://codereview.chromium.org/119363

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17956 0039d316-1c4b-4281-b951-d872f2087c98
2009-06-09 17:39:34 +00:00

36 linhas
948 B
Objective-C

// Copyright (c) 2009 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 BASE_SCOPED_NSDISABLE_SCREEN_UPDATES_H_
#define BASE_SCOPED_NSDISABLE_SCREEN_UPDATES_H_
#import <Cocoa/Cocoa.h>
#include "base/basictypes.h"
namespace base {
// 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
#endif