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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #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]