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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "lifecycle.h"
+#include "stickman.h"
+#include "node.h"
+#include "animation.h"
+#include "graphicsview.h"
+
+#include <QtCore>
+#include <QtWidgets>
+
+class KeyPressTransition: public QSignalTransition
+{
+public:
+ KeyPressTransition(GraphicsView *receiver, Qt::Key key)
+ : QSignalTransition(receiver, SIGNAL(keyPressed(int))), m_key(key)
+ {
+ }
+ KeyPressTransition(GraphicsView *receiver, Qt::Key key, QAbstractState *target)
+ : QSignalTransition(receiver, SIGNAL(keyPressed(int))), m_key(key)
+ {
+ setTargetState(target);
+ }
+
+ virtual bool eventTest(QEvent *e)
+ {
+ if (QSignalTransition::eventTest(e)) {
+ QVariant key = static_cast<QStateMachine::SignalEvent*>(e)->arguments().at(0);
+ return (key.toInt() == int(m_key));
+ }
+
+ return false;
+ }
+private:
+ Qt::Key m_key;
+};
+
+//! [4]
+class LightningStrikesTransition: public QEventTransition
+{
+public:
+ LightningStrikesTransition(QAbstractState *target)
+ : QEventTransition(this, QEvent::Timer)
+ {
+ setTargetState(target);
+ qsrand((uint)QDateTime::currentDateTime().toTime_t());
+ startTimer(1000);
+ }
+
+ virtual bool eventTest(QEvent *e)
+ {
+ return QEventTransition::eventTest(e) && ((qrand() % 50) == 0);
+ }
+};
+//! [4]
+
+LifeCycle::LifeCycle(StickMan *stickMan, GraphicsView *keyReceiver)
+ : m_stickMan(stickMan), m_keyReceiver(keyReceiver)
+{
+ // Create animation group to be used for all transitions
+ m_animationGroup = new QParallelAnimationGroup();
+ const int stickManNodeCount = m_stickMan->nodeCount();
+ for (int i=0; i<stickManNodeCount; ++i) {
+ QPropertyAnimation *pa = new QPropertyAnimation(m_stickMan->node(i), "pos");
+ m_animationGroup->addAnimation(pa);
+ }
+
+ // Set up initial state graph
+//! [3]
+ m_machine = new QStateMachine();
+ m_machine->addDefaultAnimation(m_animationGroup);
+//! [3]
+
+ m_alive = new QState(m_machine);
+ m_alive->setObjectName("alive");
+
+ // Make it blink when lightning strikes before entering dead animation
+ QState *lightningBlink = new QState(m_machine);
+ lightningBlink->assignProperty(m_stickMan->scene(), "backgroundBrush", Qt::white);
+ lightningBlink->assignProperty(m_stickMan, "penColor", Qt::black);
+ lightningBlink->assignProperty(m_stickMan, "fillColor", Qt::white);
+ lightningBlink->assignProperty(m_stickMan, "isDead", true);
+
+//! [5]
+ QTimer *timer = new QTimer(lightningBlink);
+ timer->setSingleShot(true);
+ timer->setInterval(100);
+ QObject::connect(lightningBlink, SIGNAL(entered()), timer, SLOT(start()));
+ QObject::connect(lightningBlink, SIGNAL(exited()), timer, SLOT(stop()));
+//! [5]
+
+ m_dead = new QState(m_machine);
+ m_dead->assignProperty(m_stickMan->scene(), "backgroundBrush", Qt::black);
+ m_dead->assignProperty(m_stickMan, "penColor", Qt::white);
+ m_dead->assignProperty(m_stickMan, "fillColor", Qt::black);
+ m_dead->setObjectName("dead");
+
+ // Idle state (sets no properties)
+ m_idle = new QState(m_alive);
+ m_idle->setObjectName("idle");
+
+ m_alive->setInitialState(m_idle);
+
+ // Lightning strikes at random
+ m_alive->addTransition(new LightningStrikesTransition(lightningBlink));
+//! [0]
+ lightningBlink->addTransition(timer, SIGNAL(timeout()), m_dead);
+//! [0]
+
+ m_machine->setInitialState(m_alive);
+}
+
+void LifeCycle::setDeathAnimation(const QString &fileName)
+{
+ QState *deathAnimation = makeState(m_dead, fileName);
+ m_dead->setInitialState(deathAnimation);
+}
+
+void LifeCycle::start()
+{
+ m_machine->start();
+}
+
+void LifeCycle::addActivity(const QString &fileName, Qt::Key key, QObject *sender, const char *signal)
+{
+ QState *state = makeState(m_alive, fileName);
+ m_alive->addTransition(new KeyPressTransition(m_keyReceiver, key, state));
+
+ if((sender != NULL) || (signal != NULL)) {
+ m_alive->addTransition(sender, signal, state);
+ }
+}
+
+QState *LifeCycle::makeState(QState *parentState, const QString &animationFileName)
+{
+ QState *topLevel = new QState(parentState);
+
+ Animation animation;
+ {
+ QFile file(animationFileName);
+ if (file.open(QIODevice::ReadOnly))
+ animation.load(&file);
+ }
+
+ const int frameCount = animation.totalFrames();
+ QState *previousState = 0;
+ for (int i=0; i<frameCount; ++i) {
+ animation.setCurrentFrame(i);
+
+//! [1]
+ QState *frameState = new QState(topLevel);
+ const int nodeCount = animation.nodeCount();
+ for (int j=0; j<nodeCount; ++j)
+ frameState->assignProperty(m_stickMan->node(j), "pos", animation.nodePos(j));
+//! [1]
+
+ frameState->setObjectName(QString::fromLatin1("frame %0").arg(i));
+ if (previousState == 0)
+ topLevel->setInitialState(frameState);
+ else
+//! [2]
+ previousState->addTransition(previousState, SIGNAL(propertiesAssigned()), frameState);
+//! [2]
+
+ previousState = frameState;
+ }
+
+ // Loop
+ previousState->addTransition(previousState, SIGNAL(propertiesAssigned()), topLevel->initialState());
+
+ return topLevel;
+
+}
+
+LifeCycle::~LifeCycle()
+{
+ delete m_machine;
+ delete m_animationGroup;
+}