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112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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//==============================================================================
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class ValueAnimator : public Animator::Impl
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{
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public:
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explicit ValueAnimator (ValueAnimatorBuilder optionsIn) : options (std::move (optionsIn)) {}
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auto getValue() const
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{
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using namespace detail::ArrayAndTupleOps;
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return options.getEasing() == nullptr ? getProgress() : options.getEasing() (getProgress());
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}
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float getProgress() const
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{
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if (isComplete())
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return 1.0f;
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return timeBasedProgress;
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}
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/** Returns the time in milliseconds that it takes for the progress to go from 0.0 to 1.0.
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This is the value returned even if the Animator is infinitely running.
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*/
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double getDurationMs() const override
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{
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return options.getDurationMs();
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}
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bool isComplete() const override
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{
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return Animator::Impl::isComplete()
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|| (! options.isInfinitelyRunning() && timeBasedProgress >= 1.0f);
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}
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private:
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Animator::Status internalUpdate (double timestampMs) override
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{
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timeBasedProgress = (float) ((timestampMs - startedAtMs) / options.getDurationMs());
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NullCheckedInvocation::invoke (onValueChanged, getValue());
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if (! options.isInfinitelyRunning())
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return getProgress() >= 1.0 ? Animator::Status::finished : Animator::Status::inProgress;
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return Animator::Status::inProgress;
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}
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void onStart (double timeMs) override
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{
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startedAtMs = timeMs;
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timeBasedProgress = 0.0f;
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if (auto fn = options.getOnStartWithValueChanged())
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onValueChanged = fn();
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}
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void onComplete() override
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{
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NullCheckedInvocation::invoke (options.getOnComplete());
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}
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double startedAtMs = 0.0;
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float timeBasedProgress = 0.0f;
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const ValueAnimatorBuilder options;
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ValueAnimatorBuilder::ValueChangedCallback onValueChanged;
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};
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//==============================================================================
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Animator ValueAnimatorBuilder::build() const& { return Animator { std::make_unique<ValueAnimator> (*this) }; }
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Animator ValueAnimatorBuilder::build() && { return Animator { std::make_unique<ValueAnimator> (std::move (*this)) }; }
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} // namespace juce
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