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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #include "robot.h" |
| |
| #include <QGraphicsSceneDragDropEvent> |
| #include <QMimeData> |
| #include <QPainter> |
| #include <QParallelAnimationGroup> |
| #include <QPropertyAnimation> |
| |
| //! [0] |
| RobotPart::RobotPart(QGraphicsItem *parent) |
| : QGraphicsObject(parent), color(Qt::lightGray) |
| { |
| setAcceptDrops(true); |
| } |
| //! [0] |
| |
| //! [1] |
| void RobotPart::dragEnterEvent(QGraphicsSceneDragDropEvent *event) |
| { |
| if (event->mimeData()->hasColor()) { |
| event->setAccepted(true); |
| dragOver = true; |
| update(); |
| } else { |
| event->setAccepted(false); |
| } |
| } |
| //! [1] |
| |
| //! [2] |
| void RobotPart::dragLeaveEvent(QGraphicsSceneDragDropEvent *event) |
| { |
| Q_UNUSED(event); |
| dragOver = false; |
| update(); |
| } |
| //! [2] |
| |
| //! [3] |
| void RobotPart::dropEvent(QGraphicsSceneDragDropEvent *event) |
| { |
| dragOver = false; |
| if (event->mimeData()->hasColor()) |
| color = qvariant_cast<QColor>(event->mimeData()->colorData()); |
| update(); |
| } |
| //! [3] |
| |
| //! [4] |
| RobotHead::RobotHead(QGraphicsItem *parent) |
| : RobotPart(parent) |
| { |
| } |
| //! [4] |
| |
| //! [5] |
| QRectF RobotHead::boundingRect() const |
| { |
| return QRectF(-15, -50, 30, 50); |
| } |
| //! [5] |
| |
| //! [6] |
| void RobotHead::paint(QPainter *painter, |
| const QStyleOptionGraphicsItem *option, QWidget *widget) |
| { |
| Q_UNUSED(option); |
| Q_UNUSED(widget); |
| if (pixmap.isNull()) { |
| painter->setBrush(dragOver ? color.lighter(130) : color); |
| painter->drawRoundedRect(-10, -30, 20, 30, 25, 25, Qt::RelativeSize); |
| painter->setBrush(Qt::white); |
| painter->drawEllipse(-7, -3 - 20, 7, 7); |
| painter->drawEllipse(0, -3 - 20, 7, 7); |
| painter->setBrush(Qt::black); |
| painter->drawEllipse(-5, -1 - 20, 2, 2); |
| painter->drawEllipse(2, -1 - 20, 2, 2); |
| painter->setPen(QPen(Qt::black, 2)); |
| painter->setBrush(Qt::NoBrush); |
| painter->drawArc(-6, -2 - 20, 12, 15, 190 * 16, 160 * 16); |
| } else { |
| painter->scale(.2272, .2824); |
| painter->drawPixmap(QPointF(-15 * 4.4, -50 * 3.54), pixmap); |
| } |
| } |
| //! [6] |
| |
| //! [7] |
| void RobotHead::dragEnterEvent(QGraphicsSceneDragDropEvent *event) |
| { |
| if (event->mimeData()->hasImage()) { |
| event->setAccepted(true); |
| dragOver = true; |
| update(); |
| } else { |
| RobotPart::dragEnterEvent(event); |
| } |
| } |
| //! [7] |
| |
| //! [8] |
| void RobotHead::dropEvent(QGraphicsSceneDragDropEvent *event) |
| { |
| if (event->mimeData()->hasImage()) { |
| dragOver = false; |
| pixmap = qvariant_cast<QPixmap>(event->mimeData()->imageData()); |
| update(); |
| } else { |
| RobotPart::dropEvent(event); |
| } |
| } |
| //! [8] |
| |
| QRectF RobotTorso::boundingRect() const |
| { |
| return QRectF(-30, -20, 60, 60); |
| } |
| |
| void RobotTorso::paint(QPainter *painter, |
| const QStyleOptionGraphicsItem *option, QWidget *widget) |
| { |
| Q_UNUSED(option); |
| Q_UNUSED(widget); |
| |
| painter->setBrush(dragOver ? color.lighter(130) : color); |
| painter->drawRoundedRect(-20, -20, 40, 60, 25, 25, Qt::RelativeSize); |
| painter->drawEllipse(-25, -20, 20, 20); |
| painter->drawEllipse(5, -20, 20, 20); |
| painter->drawEllipse(-20, 22, 20, 20); |
| painter->drawEllipse(0, 22, 20, 20); |
| } |
| |
| RobotLimb::RobotLimb(QGraphicsItem *parent) |
| : RobotPart(parent) |
| { |
| } |
| |
| QRectF RobotLimb::boundingRect() const |
| { |
| return QRectF(-5, -5, 40, 10); |
| } |
| |
| void RobotLimb::paint(QPainter *painter, |
| const QStyleOptionGraphicsItem *option, QWidget *widget) |
| { |
| Q_UNUSED(option); |
| Q_UNUSED(widget); |
| |
| painter->setBrush(dragOver ? color.lighter(130) : color); |
| painter->drawRoundedRect(boundingRect(), 50, 50, Qt::RelativeSize); |
| painter->drawEllipse(-5, -5, 10, 10); |
| } |
| |
| //! [10] |
| Robot::Robot(QGraphicsItem *parent) |
| : RobotPart(parent) |
| { |
| setFlag(ItemHasNoContents); |
| |
| QGraphicsObject *torsoItem = new RobotTorso(this); |
| QGraphicsObject *headItem = new RobotHead(torsoItem); |
| QGraphicsObject *upperLeftArmItem = new RobotLimb(torsoItem); |
| QGraphicsObject *lowerLeftArmItem = new RobotLimb(upperLeftArmItem); |
| QGraphicsObject *upperRightArmItem = new RobotLimb(torsoItem); |
| QGraphicsObject *lowerRightArmItem = new RobotLimb(upperRightArmItem); |
| QGraphicsObject *upperRightLegItem = new RobotLimb(torsoItem); |
| QGraphicsObject *lowerRightLegItem = new RobotLimb(upperRightLegItem); |
| QGraphicsObject *upperLeftLegItem = new RobotLimb(torsoItem); |
| QGraphicsObject *lowerLeftLegItem = new RobotLimb(upperLeftLegItem); |
| //! [10] |
| |
| //! [11] |
| headItem->setPos(0, -18); |
| upperLeftArmItem->setPos(-15, -10); |
| lowerLeftArmItem->setPos(30, 0); |
| upperRightArmItem->setPos(15, -10); |
| lowerRightArmItem->setPos(30, 0); |
| upperRightLegItem->setPos(10, 32); |
| lowerRightLegItem->setPos(30, 0); |
| upperLeftLegItem->setPos(-10, 32); |
| lowerLeftLegItem->setPos(30, 0); |
| //! [11] |
| |
| //! [12] |
| QParallelAnimationGroup *animation = new QParallelAnimationGroup(this); |
| |
| QPropertyAnimation *headAnimation = new QPropertyAnimation(headItem, "rotation"); |
| headAnimation->setStartValue(20); |
| headAnimation->setEndValue(-20); |
| QPropertyAnimation *headScaleAnimation = new QPropertyAnimation(headItem, "scale"); |
| headScaleAnimation->setEndValue(1.1); |
| animation->addAnimation(headAnimation); |
| animation->addAnimation(headScaleAnimation); |
| //! [12] |
| |
| QPropertyAnimation *upperLeftArmAnimation = new QPropertyAnimation(upperLeftArmItem, "rotation"); |
| upperLeftArmAnimation->setStartValue(190); |
| upperLeftArmAnimation->setEndValue(180); |
| animation->addAnimation(upperLeftArmAnimation); |
| |
| QPropertyAnimation *lowerLeftArmAnimation = new QPropertyAnimation(lowerLeftArmItem, "rotation"); |
| lowerLeftArmAnimation->setStartValue(50); |
| lowerLeftArmAnimation->setEndValue(10); |
| animation->addAnimation(lowerLeftArmAnimation); |
| |
| QPropertyAnimation *upperRightArmAnimation = new QPropertyAnimation(upperRightArmItem, "rotation"); |
| upperRightArmAnimation->setStartValue(300); |
| upperRightArmAnimation->setEndValue(310); |
| animation->addAnimation(upperRightArmAnimation); |
| |
| QPropertyAnimation *lowerRightArmAnimation = new QPropertyAnimation(lowerRightArmItem, "rotation"); |
| lowerRightArmAnimation->setStartValue(0); |
| lowerRightArmAnimation->setEndValue(-70); |
| animation->addAnimation(lowerRightArmAnimation); |
| |
| QPropertyAnimation *upperLeftLegAnimation = new QPropertyAnimation(upperLeftLegItem, "rotation"); |
| upperLeftLegAnimation->setStartValue(150); |
| upperLeftLegAnimation->setEndValue(80); |
| animation->addAnimation(upperLeftLegAnimation); |
| |
| QPropertyAnimation *lowerLeftLegAnimation = new QPropertyAnimation(lowerLeftLegItem, "rotation"); |
| lowerLeftLegAnimation->setStartValue(70); |
| lowerLeftLegAnimation->setEndValue(10); |
| animation->addAnimation(lowerLeftLegAnimation); |
| |
| QPropertyAnimation *upperRightLegAnimation = new QPropertyAnimation(upperRightLegItem, "rotation"); |
| upperRightLegAnimation->setStartValue(40); |
| upperRightLegAnimation->setEndValue(120); |
| animation->addAnimation(upperRightLegAnimation); |
| |
| QPropertyAnimation *lowerRightLegAnimation = new QPropertyAnimation(lowerRightLegItem, "rotation"); |
| lowerRightLegAnimation->setStartValue(10); |
| lowerRightLegAnimation->setEndValue(50); |
| animation->addAnimation(lowerRightLegAnimation); |
| |
| QPropertyAnimation *torsoAnimation = new QPropertyAnimation(torsoItem, "rotation"); |
| torsoAnimation->setStartValue(5); |
| torsoAnimation->setEndValue(-20); |
| animation->addAnimation(torsoAnimation); |
| |
| //! [13] |
| for (int i = 0; i < animation->animationCount(); ++i) { |
| QPropertyAnimation *anim = qobject_cast<QPropertyAnimation *>(animation->animationAt(i)); |
| anim->setEasingCurve(QEasingCurve::SineCurve); |
| anim->setDuration(2000); |
| } |
| |
| animation->setLoopCount(-1); |
| animation->start(); |
| //! [13] |
| } |
| |
| //! [9] |
| QRectF Robot::boundingRect() const |
| { |
| return QRectF(); |
| } |
| |
| void Robot::paint(QPainter *painter, |
| const QStyleOptionGraphicsItem *option, QWidget *widget) |
| { |
| Q_UNUSED(painter); |
| Q_UNUSED(option); |
| Q_UNUSED(widget); |
| } |
| //! [9] |