void RGBMatrix::insertStartValues(FadeChannel& fc, uint fadeTime) const
{
Q_ASSERT(m_fader != NULL);
// To create a nice and smooth fade, get the starting value from
// m_fader's existing FadeChannel (if any). Otherwise just assume
// we're starting from zero.
QHash <FadeChannel,FadeChannel>::const_iterator oldChannelIterator = m_fader->channels().find(fc);
if (oldChannelIterator != m_fader->channels().end())
{
FadeChannel old = oldChannelIterator.value();
fc.setCurrent(old.current());
if (fc.target() == old.target())
{
fc.setStart(old.start());
fc.setElapsed(old.elapsed());
}
else
fc.setStart(old.current());
}
else
{
fc.setCurrent(0);
fc.setStart(0);
}
// The channel is not ready yet
fc.setReady(false);
// Fade in speed is used for all non-zero targets
if (fc.target() == 0)
fc.setFadeTime(fadeOutSpeed());
else
fc.setFadeTime(fadeTime);
}
void FadeChannel_Test::nextStep()
{
FadeChannel fc;
fc.setStart(0);
fc.setTarget(250);
fc.setFadeTime(1000);
for (int i = 5; i < 250; i += 5)
{
int value = fc.nextStep(MasterTimer::tick());
QCOMPARE(value, i);
}
fc.setCurrent(0);
fc.setReady(false);
fc.setFadeTime(0);
fc.setElapsed(0);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(250));
fc.setCurrent(0);
fc.setReady(false);
fc.setFadeTime(MasterTimer::tick() / 5);
fc.setElapsed(0);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(250));
fc.setCurrent(0);
fc.setReady(false);
fc.setFadeTime(1 * MasterTimer::tick());
fc.setElapsed(0);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(250));
fc.setCurrent(0);
fc.setReady(false);
fc.setFadeTime(2 * MasterTimer::tick());
fc.setElapsed(0);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(125));
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(250));
fc.setCurrent(0);
fc.setReady(false);
fc.setFadeTime(5 * MasterTimer::tick());
fc.setElapsed(0);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(50));
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(100));
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(150));
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(200));
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(250));
// Maximum elapsed() reached
fc.setCurrent(0);
fc.setTarget(255);
fc.setReady(false);
fc.setElapsed(UINT_MAX);
fc.setFadeTime(5 * MasterTimer::tick());
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(255));
QCOMPARE(fc.elapsed(), UINT_MAX);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(255));
QCOMPARE(fc.elapsed(), UINT_MAX);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(255));
QCOMPARE(fc.elapsed(), UINT_MAX);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(255));
QCOMPARE(fc.elapsed(), UINT_MAX);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(255));
QCOMPARE(fc.elapsed(), UINT_MAX);
// Channel marked as ready
fc.setReady(true);
fc.setElapsed(0);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(255));
QCOMPARE(fc.elapsed(), MasterTimer::tick() * 1);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(255));
QCOMPARE(fc.elapsed(), MasterTimer::tick() * 2);
QCOMPARE(fc.nextStep(MasterTimer::tick()), uchar(255));
QCOMPARE(fc.elapsed(), MasterTimer::tick() * 3);
}