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50
51#include "robot.h"
52
53#include <QGraphicsSceneDragDropEvent>
54#include <QMimeData>
55#include <QPainter>
56#include <QParallelAnimationGroup>
57#include <QPropertyAnimation>
58
59//! [0]
60RobotPart::RobotPart(QGraphicsItem *parent)
61 : QGraphicsObject(parent), color(Qt::lightGray)
62{
63 setAcceptDrops(true);
64}
65//! [0]
66
67//! [1]
68void RobotPart::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
69{
70 if (event->mimeData()->hasColor()) {
71 event->setAccepted(true);
72 dragOver = true;
73 update();
74 } else {
75 event->setAccepted(false);
76 }
77}
78//! [1]
79
80//! [2]
81void RobotPart::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
82{
83 Q_UNUSED(event);
84 dragOver = false;
85 update();
86}
87//! [2]
88
89//! [3]
90void RobotPart::dropEvent(QGraphicsSceneDragDropEvent *event)
91{
92 dragOver = false;
93 if (event->mimeData()->hasColor())
94 color = qvariant_cast<QColor>(event->mimeData()->colorData());
95 update();
96}
97//! [3]
98
99//! [4]
100RobotHead::RobotHead(QGraphicsItem *parent)
101 : RobotPart(parent)
102{
103}
104//! [4]
105
106//! [5]
107QRectF RobotHead::boundingRect() const
108{
109 return QRectF(-15, -50, 30, 50);
110}
111//! [5]
112
113//! [6]
114void RobotHead::paint(QPainter *painter,
115 const QStyleOptionGraphicsItem *option, QWidget *widget)
116{
117 Q_UNUSED(option);
118 Q_UNUSED(widget);
119 if (pixmap.isNull()) {
120 painter->setBrush(dragOver ? color.lighter(130) : color);
121 painter->drawRoundedRect(-10, -30, 20, 30, 25, 25, Qt::RelativeSize);
122 painter->setBrush(Qt::white);
123 painter->drawEllipse(-7, -3 - 20, 7, 7);
124 painter->drawEllipse(0, -3 - 20, 7, 7);
125 painter->setBrush(Qt::black);
126 painter->drawEllipse(-5, -1 - 20, 2, 2);
127 painter->drawEllipse(2, -1 - 20, 2, 2);
128 painter->setPen(QPen(Qt::black, 2));
129 painter->setBrush(Qt::NoBrush);
130 painter->drawArc(-6, -2 - 20, 12, 15, 190 * 16, 160 * 16);
131 } else {
132 painter->scale(.2272, .2824);
133 painter->drawPixmap(QPointF(-15 * 4.4, -50 * 3.54), pixmap);
134 }
135}
136//! [6]
137
138//! [7]
139void RobotHead::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
140{
141 if (event->mimeData()->hasImage()) {
142 event->setAccepted(true);
143 dragOver = true;
144 update();
145 } else {
146 RobotPart::dragEnterEvent(event);
147 }
148}
149//! [7]
150
151//! [8]
152void RobotHead::dropEvent(QGraphicsSceneDragDropEvent *event)
153{
154 if (event->mimeData()->hasImage()) {
155 dragOver = false;
156 pixmap = qvariant_cast<QPixmap>(event->mimeData()->imageData());
157 update();
158 } else {
159 RobotPart::dropEvent(event);
160 }
161}
162//! [8]
163
164QRectF RobotTorso::boundingRect() const
165{
166 return QRectF(-30, -20, 60, 60);
167}
168
169void RobotTorso::paint(QPainter *painter,
170 const QStyleOptionGraphicsItem *option, QWidget *widget)
171{
172 Q_UNUSED(option);
173 Q_UNUSED(widget);
174
175 painter->setBrush(dragOver ? color.lighter(130) : color);
176 painter->drawRoundedRect(-20, -20, 40, 60, 25, 25, Qt::RelativeSize);
177 painter->drawEllipse(-25, -20, 20, 20);
178 painter->drawEllipse(5, -20, 20, 20);
179 painter->drawEllipse(-20, 22, 20, 20);
180 painter->drawEllipse(0, 22, 20, 20);
181}
182
183RobotLimb::RobotLimb(QGraphicsItem *parent)
184 : RobotPart(parent)
185{
186}
187
188QRectF RobotLimb::boundingRect() const
189{
190 return QRectF(-5, -5, 40, 10);
191}
192
193void RobotLimb::paint(QPainter *painter,
194 const QStyleOptionGraphicsItem *option, QWidget *widget)
195{
196 Q_UNUSED(option);
197 Q_UNUSED(widget);
198
199 painter->setBrush(dragOver ? color.lighter(130) : color);
200 painter->drawRoundedRect(boundingRect(), 50, 50, Qt::RelativeSize);
201 painter->drawEllipse(-5, -5, 10, 10);
202}
203
204//! [10]
205Robot::Robot(QGraphicsItem *parent)
206 : RobotPart(parent)
207{
208 setFlag(ItemHasNoContents);
209
210 QGraphicsObject *torsoItem = new RobotTorso(this);
211 QGraphicsObject *headItem = new RobotHead(torsoItem);
212 QGraphicsObject *upperLeftArmItem = new RobotLimb(torsoItem);
213 QGraphicsObject *lowerLeftArmItem = new RobotLimb(upperLeftArmItem);
214 QGraphicsObject *upperRightArmItem = new RobotLimb(torsoItem);
215 QGraphicsObject *lowerRightArmItem = new RobotLimb(upperRightArmItem);
216 QGraphicsObject *upperRightLegItem = new RobotLimb(torsoItem);
217 QGraphicsObject *lowerRightLegItem = new RobotLimb(upperRightLegItem);
218 QGraphicsObject *upperLeftLegItem = new RobotLimb(torsoItem);
219 QGraphicsObject *lowerLeftLegItem = new RobotLimb(upperLeftLegItem);
220//! [10]
221
222//! [11]
223 headItem->setPos(0, -18);
224 upperLeftArmItem->setPos(-15, -10);
225 lowerLeftArmItem->setPos(30, 0);
226 upperRightArmItem->setPos(15, -10);
227 lowerRightArmItem->setPos(30, 0);
228 upperRightLegItem->setPos(10, 32);
229 lowerRightLegItem->setPos(30, 0);
230 upperLeftLegItem->setPos(-10, 32);
231 lowerLeftLegItem->setPos(30, 0);
232//! [11]
233
234//! [12]
235 QParallelAnimationGroup *animation = new QParallelAnimationGroup(this);
236
237 QPropertyAnimation *headAnimation = new QPropertyAnimation(headItem, "rotation");
238 headAnimation->setStartValue(20);
239 headAnimation->setEndValue(-20);
240 QPropertyAnimation *headScaleAnimation = new QPropertyAnimation(headItem, "scale");
241 headScaleAnimation->setEndValue(1.1);
242 animation->addAnimation(headAnimation);
243 animation->addAnimation(headScaleAnimation);
244//! [12]
245
246 QPropertyAnimation *upperLeftArmAnimation = new QPropertyAnimation(upperLeftArmItem, "rotation");
247 upperLeftArmAnimation->setStartValue(190);
248 upperLeftArmAnimation->setEndValue(180);
249 animation->addAnimation(upperLeftArmAnimation);
250
251 QPropertyAnimation *lowerLeftArmAnimation = new QPropertyAnimation(lowerLeftArmItem, "rotation");
252 lowerLeftArmAnimation->setStartValue(50);
253 lowerLeftArmAnimation->setEndValue(10);
254 animation->addAnimation(lowerLeftArmAnimation);
255
256 QPropertyAnimation *upperRightArmAnimation = new QPropertyAnimation(upperRightArmItem, "rotation");
257 upperRightArmAnimation->setStartValue(300);
258 upperRightArmAnimation->setEndValue(310);
259 animation->addAnimation(upperRightArmAnimation);
260
261 QPropertyAnimation *lowerRightArmAnimation = new QPropertyAnimation(lowerRightArmItem, "rotation");
262 lowerRightArmAnimation->setStartValue(0);
263 lowerRightArmAnimation->setEndValue(-70);
264 animation->addAnimation(lowerRightArmAnimation);
265
266 QPropertyAnimation *upperLeftLegAnimation = new QPropertyAnimation(upperLeftLegItem, "rotation");
267 upperLeftLegAnimation->setStartValue(150);
268 upperLeftLegAnimation->setEndValue(80);
269 animation->addAnimation(upperLeftLegAnimation);
270
271 QPropertyAnimation *lowerLeftLegAnimation = new QPropertyAnimation(lowerLeftLegItem, "rotation");
272 lowerLeftLegAnimation->setStartValue(70);
273 lowerLeftLegAnimation->setEndValue(10);
274 animation->addAnimation(lowerLeftLegAnimation);
275
276 QPropertyAnimation *upperRightLegAnimation = new QPropertyAnimation(upperRightLegItem, "rotation");
277 upperRightLegAnimation->setStartValue(40);
278 upperRightLegAnimation->setEndValue(120);
279 animation->addAnimation(upperRightLegAnimation);
280
281 QPropertyAnimation *lowerRightLegAnimation = new QPropertyAnimation(lowerRightLegItem, "rotation");
282 lowerRightLegAnimation->setStartValue(10);
283 lowerRightLegAnimation->setEndValue(50);
284 animation->addAnimation(lowerRightLegAnimation);
285
286 QPropertyAnimation *torsoAnimation = new QPropertyAnimation(torsoItem, "rotation");
287 torsoAnimation->setStartValue(5);
288 torsoAnimation->setEndValue(-20);
289 animation->addAnimation(torsoAnimation);
290
291//! [13]
292 for (int i = 0; i < animation->animationCount(); ++i) {
293 QPropertyAnimation *anim = qobject_cast<QPropertyAnimation *>(animation->animationAt(i));
294 anim->setEasingCurve(QEasingCurve::SineCurve);
295 anim->setDuration(2000);
296 }
297
298 animation->setLoopCount(-1);
299 animation->start();
300//! [13]
301}
302
303//! [9]
304QRectF Robot::boundingRect() const
305{
306 return QRectF();
307}
308
309void Robot::paint(QPainter *painter,
310 const QStyleOptionGraphicsItem *option, QWidget *widget)
311{
312 Q_UNUSED(painter);
313 Q_UNUSED(option);
314 Q_UNUSED(widget);
315}
316//! [9]
317