juce_AnimatedAppComponent.cpp

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 /*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   By using JUCE, you agree to the terms of both the JUCE 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-privacy-policy
 
   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce
{
 
AnimatedAppComponent::AnimatedAppComponent()
{
    setOpaque (true);
}
 
void AnimatedAppComponent::setFramesPerSecond (int framesPerSecondIn)
{
    jassert (0 < framesPerSecond && framesPerSecond < 1000);
    framesPerSecond = framesPerSecondIn;
    updateSync();
}
 
void AnimatedAppComponent::updateSync()
{
    if (useVBlank)
    {
        stopTimer();
 
        if (vBlankAttachment.isEmpty())
            vBlankAttachment = { this, [this] { timerCallback(); } };
    }
    else
    {
        vBlankAttachment = {};
 
        const auto interval = 1000 / framesPerSecond;
 
        if (getTimerInterval() != interval)
            startTimer (interval);
    }
}
 
void AnimatedAppComponent::setSynchroniseToVBlank (bool syncToVBlank)
{
    useVBlank = syncToVBlank;
    updateSync();
}
 
int AnimatedAppComponent::getMillisecondsSinceLastUpdate() const noexcept
{
    return (int) (Time::getCurrentTime() - lastUpdateTime).inMilliseconds();
}
 
void AnimatedAppComponent::timerCallback()
{
    ++totalUpdates;
    update();
    repaint();
    lastUpdateTime = Time::getCurrentTime();
}
 
} // namespace juce