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| |
| #include "private/qparallelanimationgroupjob_p.h" |
| #include "private/qanimationjobutil_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| QParallelAnimationGroupJob::QParallelAnimationGroupJob() |
| : QAnimationGroupJob() |
| , m_previousLoop(0) |
| , m_previousCurrentTime(0) |
| { |
| } |
| |
| QParallelAnimationGroupJob::~QParallelAnimationGroupJob() |
| { |
| } |
| |
| int QParallelAnimationGroupJob::duration() const |
| { |
| int ret = 0; |
| |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) { |
| int currentDuration = animation->totalDuration(); |
| if (currentDuration == -1) |
| return -1; // Undetermined length |
| ret = qMax(ret, currentDuration); |
| } |
| |
| return ret; |
| } |
| |
| void QParallelAnimationGroupJob::updateCurrentTime(int /*currentTime*/) |
| { |
| if (!firstChild()) |
| return; |
| |
| if (m_currentLoop > m_previousLoop) { |
| // simulate completion of the loop |
| int dura = duration(); |
| if (dura < 0) { |
| // For an uncontrolled parallel group, we need to simulate the end of running animations. |
| // As uncontrolled animation finish time is already reset for this next loop, we pick the |
| // longest of the known stop times. |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) { |
| int currentDuration = animation->totalDuration(); |
| if (currentDuration >= 0) |
| dura = qMax(dura, currentDuration); |
| } |
| } |
| if (dura > 0) { |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) { |
| if (!animation->isStopped()) |
| RETURN_IF_DELETED(animation->setCurrentTime(dura)); // will stop |
| } |
| } |
| } else if (m_currentLoop < m_previousLoop) { |
| // simulate completion of the loop seeking backwards |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) { |
| //we need to make sure the animation is in the right state |
| //and then rewind it |
| applyGroupState(animation); |
| RETURN_IF_DELETED(animation->setCurrentTime(0)); |
| animation->stop(); |
| } |
| } |
| |
| // finally move into the actual time of the current loop |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) { |
| const int dura = animation->totalDuration(); |
| //if the loopcount is bigger we should always start all animations |
| if (m_currentLoop > m_previousLoop |
| //if we're at the end of the animation, we need to start it if it wasn't already started in this loop |
| //this happens in Backward direction where not all animations are started at the same time |
| || shouldAnimationStart(animation, m_previousCurrentTime > dura /*startIfAtEnd*/)) { |
| applyGroupState(animation); |
| } |
| |
| if (animation->state() == state()) { |
| RETURN_IF_DELETED(animation->setCurrentTime(m_currentTime)); |
| if (dura > 0 && m_currentTime > dura) |
| animation->stop(); |
| } |
| } |
| m_previousLoop = m_currentLoop; |
| m_previousCurrentTime = m_currentTime; |
| } |
| |
| void QParallelAnimationGroupJob::updateState(QAbstractAnimationJob::State newState, |
| QAbstractAnimationJob::State oldState) |
| { |
| QAnimationGroupJob::updateState(newState, oldState); |
| |
| switch (newState) { |
| case Stopped: |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) |
| animation->stop(); |
| break; |
| case Paused: |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) |
| if (animation->isRunning()) |
| animation->pause(); |
| break; |
| case Running: |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) { |
| if (oldState == Stopped) { |
| animation->stop(); |
| m_previousLoop = m_direction == Forward ? 0 : m_loopCount - 1; |
| } |
| resetUncontrolledAnimationFinishTime(animation); |
| animation->setDirection(m_direction); |
| if (shouldAnimationStart(animation, oldState == Stopped)) |
| animation->start(); |
| } |
| break; |
| } |
| } |
| |
| bool QParallelAnimationGroupJob::shouldAnimationStart(QAbstractAnimationJob *animation, bool startIfAtEnd) const |
| { |
| const int dura = animation->totalDuration(); |
| |
| if (dura == -1) |
| return uncontrolledAnimationFinishTime(animation) == -1; |
| |
| if (startIfAtEnd) |
| return m_currentTime <= dura; |
| if (m_direction == Forward) |
| return m_currentTime < dura; |
| else //direction == Backward |
| return m_currentTime && m_currentTime <= dura; |
| } |
| |
| void QParallelAnimationGroupJob::applyGroupState(QAbstractAnimationJob *animation) |
| { |
| switch (m_state) |
| { |
| case Running: |
| animation->start(); |
| break; |
| case Paused: |
| animation->pause(); |
| break; |
| case Stopped: |
| default: |
| break; |
| } |
| } |
| |
| void QParallelAnimationGroupJob::updateDirection(QAbstractAnimationJob::Direction direction) |
| { |
| //we need to update the direction of the current animation |
| if (!isStopped()) { |
| for (QAbstractAnimationJob *animation = firstChild(); animation; animation = animation->nextSibling()) { |
| animation->setDirection(direction); |
| } |
| } else { |
| if (direction == Forward) { |
| m_previousLoop = 0; |
| m_previousCurrentTime = 0; |
| } else { |
| // Looping backwards with loopCount == -1 does not really work well... |
| m_previousLoop = (m_loopCount == -1 ? 0 : m_loopCount - 1); |
| m_previousCurrentTime = duration(); |
| } |
| } |
| } |
| |
| void QParallelAnimationGroupJob::uncontrolledAnimationFinished(QAbstractAnimationJob *animation) |
| { |
| Q_ASSERT(animation && (animation->duration() == -1 || animation->loopCount() < 0)); |
| int uncontrolledRunningCount = 0; |
| |
| for (QAbstractAnimationJob *child = firstChild(); child; child = child->nextSibling()) { |
| if (child == animation) { |
| setUncontrolledAnimationFinishTime(animation, animation->currentTime()); |
| } else if (child->duration() == -1 || child->loopCount() < 0) { |
| if (uncontrolledAnimationFinishTime(child) == -1) |
| ++uncontrolledRunningCount; |
| } |
| } |
| |
| if (uncontrolledRunningCount > 0) |
| return; |
| |
| int maxDuration = 0; |
| bool running = false; |
| for (QAbstractAnimationJob *job = firstChild(); job; job = job->nextSibling()) { |
| if (job->state() == Running) |
| running = true; |
| maxDuration = qMax(maxDuration, job->totalDuration()); |
| } |
| |
| setUncontrolledAnimationFinishTime(this, qMax(maxDuration + m_currentLoopStartTime, currentTime())); |
| |
| if (!running |
| && ((m_direction == Forward && m_currentLoop == m_loopCount -1) |
| || (m_direction == Backward && m_currentLoop == 0))) { |
| stop(); |
| } |
| } |
| |
| void QParallelAnimationGroupJob::debugAnimation(QDebug d) const |
| { |
| d << "ParallelAnimationGroupJob(" << hex << (const void *) this << dec << ")"; |
| |
| debugChildren(d); |
| } |
| |
| QT_END_NAMESPACE |
| |