From 38be0d13830efd2d98281c645c3a60afe05ffece Mon Sep 17 00:00:00 2001 From: Qt by Nokia Date: Wed, 27 Apr 2011 12:05:43 +0200 Subject: Initial import from the monolithic Qt. This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12 --- examples/animation/stickman/lifecycle.cpp | 213 ++++++++++++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 examples/animation/stickman/lifecycle.cpp (limited to 'examples/animation/stickman/lifecycle.cpp') diff --git a/examples/animation/stickman/lifecycle.cpp b/examples/animation/stickman/lifecycle.cpp new file mode 100644 index 0000000000..4abcdc22e5 --- /dev/null +++ b/examples/animation/stickman/lifecycle.cpp @@ -0,0 +1,213 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 +#include + +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(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; inode(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) +{ + 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; iassignProperty(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; +} -- cgit v1.2.3