alexpete
51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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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