Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#pragma once
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#include <QStyle>
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/**
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* RAII-style class that will block unneeded polish requests when doing reparenting.
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* When QWidget::setParent() is called that triggers all children to be repolished, which is expensive
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* as all stylesheet rules have to be recalculated.
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*
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* Repolishing is usually only needed if the stylesheet changed. You can use this class to save CPU cycles
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* when you know you're going to trigger setParent() calls that you're sure wouldn't affect any styling.
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*/
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namespace AzQtComponents
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{
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class RepolishMinimizer
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{
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public:
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RepolishMinimizer()
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{
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#if !defined(AZ_PLATFORM_LINUX)
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// Enable optimizations
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QStyle::enableMinimizePolishOptimizations(true);
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#endif // !defined(AZ_PLATFORM_LINUX)
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}
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~RepolishMinimizer()
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{
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#if !defined(AZ_PLATFORM_LINUX)
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// Disable optimizations. Back to normal.
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QStyle::enableMinimizePolishOptimizations(false);
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#endif // !defined(AZ_PLATFORM_LINUX)
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}
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private:
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Q_DISABLE_COPY(RepolishMinimizer)
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};
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} // namespace AzQtComponents
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