JUCE/modules/juce_gui_extra/misc/juce_AnimatedAppComponent.cpp

/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2017 - ROLI Ltd.

   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 5 End-User License
   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
   27th April 2017).

   End User License Agreement: www.juce.com/juce-5-licence
   Privacy Policy: www.juce.com/juce-5-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.

  ==============================================================================
*/

AnimatedAppComponent::AnimatedAppComponent()
    : lastUpdateTime (Time::getCurrentTime()), totalUpdates (0)
{
    setOpaque (true);
}

void AnimatedAppComponent::setFramesPerSecond (int framesPerSecond)
{
    jassert (framesPerSecond > 0 && framesPerSecond < 1000);
    startTimerHz (framesPerSecond);
}

int AnimatedAppComponent::getMillisecondsSinceLastUpdate() const noexcept
{
    return (int) (Time::getCurrentTime() - lastUpdateTime).inMilliseconds();
}

void AnimatedAppComponent::timerCallback()
{
    ++totalUpdates;
    update();
    repaint();
    lastUpdateTime = Time::getCurrentTime();
}