summaryrefslogtreecommitdiffstats
path: root/examples/animation/stickman/lifecycle.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'examples/animation/stickman/lifecycle.cpp')
-rw-r--r--examples/animation/stickman/lifecycle.cpp212
1 files changed, 212 insertions, 0 deletions
diff --git a/examples/animation/stickman/lifecycle.cpp b/examples/animation/stickman/lifecycle.cpp
new file mode 100644
index 0000000..eb4ed11
--- /dev/null
+++ b/examples/animation/stickman/lifecycle.cpp
@@ -0,0 +1,212 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "lifecycle.h"
+#include "stickman.h"
+#include "node.h"
+#include "animation.h"
+#include "graphicsview.h"
+
+#include <QtCore>
+#include <QtGui>
+
+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)), QList<QAbstractState*>() << target), m_key(key)
+ {
+ }
+
+ virtual bool eventTest(QEvent *e)
+ {
+ if (QSignalTransition::eventTest(e)) {
+ QVariant key = static_cast<QSignalEvent*>(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, QList<QAbstractState*>() << 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), "position");
+ m_animationGroup->addAnimation(pa);
+ }
+
+ // Set up intial state graph
+//! [3]
+ m_machine = new QStateMachine();
+ m_machine->addDefaultAnimation(m_animationGroup);
+//! [3]
+
+ m_alive = new QState(m_machine->rootState());
+ m_alive->setObjectName("alive");
+
+ // Make it blink when lightning strikes before entering dead animation
+ QState *lightningBlink = new QState(m_machine->rootState());
+ 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->rootState());
+ 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)
+{
+ QState *state = makeState(m_alive, fileName);
+ m_alive->addTransition(new KeyPressTransition(m_keyReceiver, key, 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), "position", animation.nodePos(j));
+//! [1]
+
+ frameState->setObjectName(QString::fromLatin1("frame %0").arg(i));
+ if (previousState == 0)
+ topLevel->setInitialState(frameState);
+ else
+//! [2]
+ previousState->addTransition(previousState, SIGNAL(polished()), frameState);
+//! [2]
+
+ previousState = frameState;
+ }
+
+ // Loop
+ previousState->addTransition(previousState, SIGNAL(polished()), topLevel->initialState());
+
+ return topLevel;
+
+}
+
+LifeCycle::~LifeCycle()
+{
+ delete m_machine;
+ delete m_animationGroup;
+}