main.cpp 范例文件

animation/animatedtiles/main.cpp
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#include <QtWidgets/QtWidgets> #include <QtCore/qmath.h> #include <QtCore/qrandom.h> #include <QtCore/qstate.h> class Pixmap : public QObject, public QGraphicsPixmapItem { Q_OBJECT Q_PROPERTY(QPointF pos READ pos WRITE setPos) public: Pixmap(const QPixmap &pix) : QObject(), QGraphicsPixmapItem(pix) { setCacheMode(DeviceCoordinateCache); } }; class Button : public QGraphicsWidget { Q_OBJECT public: Button(const QPixmap &pixmap, QGraphicsItem *parent = 0) : QGraphicsWidget(parent), _pix(pixmap) { setAcceptHoverEvents(true); setCacheMode(DeviceCoordinateCache); } QRectF boundingRect() const override { return QRectF(-65, -65, 130, 130); } QPainterPath shape() const override { QPainterPath path; path.addEllipse(boundingRect()); return path; } void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *) override { bool down = option->state & QStyle::State_Sunken; QRectF r = boundingRect(); QLinearGradient grad(r.topLeft(), r.bottomRight()); grad.setColorAt(down ? 1 : 0, option->state & QStyle::State_MouseOver ? Qt::white : Qt::lightGray); grad.setColorAt(down ? 0 : 1, Qt::darkGray); painter->setPen(Qt::darkGray); painter->setBrush(grad); painter->drawEllipse(r); QLinearGradient grad2(r.topLeft(), r.bottomRight()); grad.setColorAt(down ? 1 : 0, Qt::darkGray); grad.setColorAt(down ? 0 : 1, Qt::lightGray); painter->setPen(Qt::NoPen); painter->setBrush(grad); if (down) painter->translate(2, 2); painter->drawEllipse(r.adjusted(5, 5, -5, -5)); painter->drawPixmap(-_pix.width()/2, -_pix.height()/2, _pix); } signals: void pressed(); protected: void mousePressEvent(QGraphicsSceneMouseEvent *) override { emit pressed(); update(); } void mouseReleaseEvent(QGraphicsSceneMouseEvent *) override { update(); } private: QPixmap _pix; }; class View : public QGraphicsView { public: View(QGraphicsScene *scene) : QGraphicsView(scene) { } protected: void resizeEvent(QResizeEvent *event) override { QGraphicsView::resizeEvent(event); fitInView(sceneRect(), Qt::KeepAspectRatio); } }; int main(int argc, char **argv) { Q_INIT_RESOURCE(animatedtiles); QApplication app(argc, argv); QPixmap kineticPix(":/images/kinetic.png"); QPixmap bgPix(":/images/Time-For-Lunch-2.jpg"); QGraphicsScene scene(-350, -350, 700, 700); QList<Pixmap *> items; for (int i = 0; i < 64; ++i) { Pixmap *item = new Pixmap(kineticPix); item->setOffset(-kineticPix.width()/2, -kineticPix.height()/2); item->setZValue(i); items << item; scene.addItem(item); } // Buttons QGraphicsItem *buttonParent = new QGraphicsRectItem; Button *ellipseButton = new Button(QPixmap(":/images/ellipse.png"), buttonParent); Button *figure8Button = new Button(QPixmap(":/images/figure8.png"), buttonParent); Button *randomButton = new Button(QPixmap(":/images/random.png"), buttonParent); Button *tiledButton = new Button(QPixmap(":/images/tile.png"), buttonParent); Button *centeredButton = new Button(QPixmap(":/images/centered.png"), buttonParent); ellipseButton->setPos(-100, -100); figure8Button->setPos(100, -100); randomButton->setPos(0, 0); tiledButton->setPos(-100, 100); centeredButton->setPos(100, 100); scene.addItem(buttonParent); buttonParent->setTransform(QTransform::fromScale(0.75, 0.75), true); buttonParent->setPos(200, 200); buttonParent->setZValue(65); // States QState *rootState = new QState; QState *ellipseState = new QState(rootState); QState *figure8State = new QState(rootState); QState *randomState = new QState(rootState); QState *tiledState = new QState(rootState); QState *centeredState = new QState(rootState); // Values for (int i = 0; i < items.count(); ++i) { Pixmap *item = items.at(i); // Ellipse ellipseState->assignProperty(item, "pos", QPointF(qCos((i / 63.0) * 6.28) * 250, qSin((i / 63.0) * 6.28) * 250)); // Figure 8 figure8State->assignProperty(item, "pos", QPointF(qSin((i / 63.0) * 6.28) * 250, qSin(((i * 2)/63.0) * 6.28) * 250)); // Random randomState->assignProperty(item, "pos", QPointF(-250 + QRandomGenerator::global()->bounded(500), -250 + QRandomGenerator::global()->bounded(500))); // Tiled tiledState->assignProperty(item, "pos", QPointF(((i % 8) - 4) * kineticPix.width() + kineticPix.width() / 2, ((i / 8) - 4) * kineticPix.height() + kineticPix.height() / 2)); // Centered centeredState->assignProperty(item, "pos", QPointF()); } // Ui View *view = new View(&scene); view->setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Animated Tiles")); view->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate); view->setBackgroundBrush(bgPix); view->setCacheMode(QGraphicsView::CacheBackground); view->setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform); view->show(); QStateMachine states; states.addState(rootState); states.setInitialState(rootState); rootState->setInitialState(centeredState); QParallelAnimationGroup *group = new QParallelAnimationGroup; for (int i = 0; i < items.count(); ++i) { QPropertyAnimation *anim = new QPropertyAnimation(items[i], "pos"); anim->setDuration(750 + i * 25); anim->setEasingCurve(QEasingCurve::InOutBack); group->addAnimation(anim); } QAbstractTransition *trans = rootState->addTransition(ellipseButton, &Button::pressed, ellipseState); trans->addAnimation(group); trans = rootState->addTransition(figure8Button, &Button::pressed, figure8State); trans->addAnimation(group); trans = rootState->addTransition(randomButton, &Button::pressed, randomState); trans->addAnimation(group); trans = rootState->addTransition(tiledButton, &Button::pressed, tiledState); trans->addAnimation(group); trans = rootState->addTransition(centeredButton, &Button::pressed, centeredState); trans->addAnimation(group); QTimer timer; timer.start(125); timer.setSingleShot(true); trans = rootState->addTransition(&timer, &QTimer::timeout, ellipseState); trans->addAnimation(group); states.start(); #ifdef QT_KEYPAD_NAVIGATION QApplication::setNavigationMode(Qt::NavigationModeCursorAuto); #endif return app.exec(); } #include "main.moc"