animation.cpp Example File

animation/stickman/animation.cpp
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#include "animation.h" #include <QPointF> #include <QVector> #include <QIODevice> #include <QDataStream> class Frame { public: Frame() { } int nodeCount() const { return m_nodePositions.size(); } void setNodeCount(int nodeCount) { m_nodePositions.resize(nodeCount); } QPointF nodePos(int idx) const { return m_nodePositions.at(idx); } void setNodePos(int idx, const QPointF &pos) { m_nodePositions[idx] = pos; } private: QVector<QPointF> m_nodePositions; }; Animation::Animation() { m_currentFrame = 0; m_frames.append(new Frame); } Animation::~Animation() { qDeleteAll(m_frames); } void Animation::setTotalFrames(int totalFrames) { while (m_frames.size() < totalFrames) m_frames.append(new Frame); while (totalFrames < m_frames.size()) delete m_frames.takeLast(); } int Animation::totalFrames() const { return m_frames.size(); } void Animation::setCurrentFrame(int currentFrame) { m_currentFrame = qMax(qMin(currentFrame, totalFrames()-1), 0); } int Animation::currentFrame() const { return m_currentFrame; } void Animation::setNodeCount(int nodeCount) { Frame *frame = m_frames.at(m_currentFrame); frame->setNodeCount(nodeCount); } int Animation::nodeCount() const { Frame *frame = m_frames.at(m_currentFrame); return frame->nodeCount(); } void Animation::setNodePos(int idx, const QPointF &pos) { Frame *frame = m_frames.at(m_currentFrame); frame->setNodePos(idx, pos); } QPointF Animation::nodePos(int idx) const { Frame *frame = m_frames.at(m_currentFrame); return frame->nodePos(idx); } QString Animation::name() const { return m_name; } void Animation::setName(const QString &name) { m_name = name; } void Animation::save(QIODevice *device) const { QDataStream stream(device); stream << m_name; stream << m_frames.size(); foreach (Frame *frame, m_frames) { stream << frame->nodeCount(); for (int i=0; i<frame->nodeCount(); ++i) stream << frame->nodePos(i); } } void Animation::load(QIODevice *device) { if (!m_frames.isEmpty()) qDeleteAll(m_frames); m_frames.clear(); QDataStream stream(device); stream >> m_name; int frameCount; stream >> frameCount; for (int i=0; i<frameCount; ++i) { int nodeCount; stream >> nodeCount; Frame *frame = new Frame; frame->setNodeCount(nodeCount); for (int j=0; j<nodeCount; ++j) { QPointF pos; stream >> pos; frame->setNodePos(j, pos); } m_frames.append(frame); } }