Initial import of statemachine branch from the old kinetic repository

1 files changed, 275 insertions, 0 deletions

diff --git a/examples/animation/moveblocks/main.cpp b/examples/animation/moveblocks/main.cpp
new file mode 100644
index 0000000..1f253f3
--- /dev/null
+++ b/examples/animation/moveblocks/main.cpp
@@ -0,0 +1,275 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore>
+#include <QtGui>
+#if defined(QT_EXPERIMENTAL_SOLUTION)
+#include "qstatemachine.h"
+#include "qstate.h"
+#include "qabstracttransition.h"
+#include "qpropertyanimation.h"
+#include "qsequentialanimationgroup.h"
+#include "qparallelanimationgroup.h"
+#include "qgraphicswidget.h"
+#endif
+#include <time.h>
+
+class StateSwitchEvent: public QEvent
+{
+public:
+    StateSwitchEvent()
+        : QEvent(Type(StateSwitchType))
+    {
+    }
+
+    StateSwitchEvent(int rand)
+        : QEvent(Type(StateSwitchType)),
+          m_rand(rand)
+    {
+    }
+
+    enum { StateSwitchType = QEvent::User + 256 };
+
+    int rand() const { return m_rand; }
+
+private:
+    int m_rand;
+};
+
+
+class QGraphicsRectWidget : public QGraphicsWidget
+{
+public:
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *,
+               QWidget *)
+    {
+        painter->fillRect(rect(), Qt::blue);
+    }
+};
+
+class StateSwitchTransition: public QAbstractTransition
+{
+public:
+    StateSwitchTransition(int rand)
+        : QAbstractTransition(),
+          m_rand(rand)
+    {
+    }
+
+protected:
+    virtual bool eventTest(QEvent *event) const
+    {
+        return (event->type() == QEvent::Type(StateSwitchEvent::StateSwitchType))
+            && (static_cast<StateSwitchEvent *>(event)->rand() == m_rand);
+    }
+
+    virtual void onTransition() {}
+
+private:
+    int m_rand;
+};
+
+class StateSwitcher : public QState
+{
+    Q_OBJECT
+public:
+    StateSwitcher(QStateMachine *machine)
+        : QState(machine->rootState()), m_machine(machine),
+          m_stateCount(0), m_lastIndex(0)
+    { }
+
+    virtual void onEntry()
+    {
+        int n;
+        while ((n = (qrand() % m_stateCount + 1)) == m_lastIndex)
+        { }
+        m_lastIndex = n;
+        m_machine->postEvent(new StateSwitchEvent(n));
+    }
+    virtual void onExit() {}
+
+    void addState(QState *state, QAbstractAnimation *animation) {
+        StateSwitchTransition *trans = new StateSwitchTransition(++m_stateCount);
+        trans->setTargetState(state);
+        addTransition(trans);
+        trans->addAnimation(animation);
+    }
+
+
+private:
+    QStateMachine *m_machine;
+    int m_stateCount;
+    int m_lastIndex;
+};
+
+QState *createGeometryState(QObject *w1, const QRect &rect1,
+                            QObject *w2, const QRect &rect2,
+                            QObject *w3, const QRect &rect3,
+                            QObject *w4, const QRect &rect4,
+                            QState *parent)
+{
+    QState *result = new QState(parent);
+    result->assignProperty(w1, "geometry", rect1);
+    result->assignProperty(w1, "geometry", rect1);
+    result->assignProperty(w2, "geometry", rect2);
+    result->assignProperty(w3, "geometry", rect3);
+    result->assignProperty(w4, "geometry", rect4);
+
+    return result;
+}
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+#if 0
+    QWidget window;
+    QPalette palette;
+    palette.setBrush(QPalette::Window, Qt::black);
+    window.setPalette(palette);
+    QPushButton *button1 = new QPushButton("A", &window);
+    QPushButton *button2 = new QPushButton("B", &window);
+    QPushButton *button3 = new QPushButton("C", &window);
+    QPushButton *button4 = new QPushButton("D", &window);
+
+    button1->setObjectName("button1");
+    button2->setObjectName("button2");
+    button3->setObjectName("button3");
+    button4->setObjectName("button4");
+#else
+    QGraphicsRectWidget *button1 = new QGraphicsRectWidget;
+    QGraphicsRectWidget *button2 = new QGraphicsRectWidget;
+    QGraphicsRectWidget *button3 = new QGraphicsRectWidget;
+    QGraphicsRectWidget *button4 = new QGraphicsRectWidget;
+    button2->setZValue(1);
+    button3->setZValue(2);
+    button4->setZValue(3);
+    QGraphicsScene scene(0, 0, 300, 300);
+    scene.setBackgroundBrush(Qt::black);
+    scene.addItem(button1);
+    scene.addItem(button2);
+    scene.addItem(button3);
+    scene.addItem(button4);
+
+    QGraphicsView window(&scene);
+    window.setFrameStyle(0);
+    window.setAlignment(Qt::AlignLeft | Qt::AlignTop);
+    window.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    window.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+#endif
+    QStateMachine machine;
+
+    QState *group = new QState();
+    group->setObjectName("group");
+    QTimer timer;
+    timer.setInterval(1250);
+    timer.setSingleShot(true);
+    group->invokeMethodOnEntry(&timer, "start");
+
+    QState *state1;
+    QState *state2;
+    QState *state3;
+    QState *state4;
+    QState *state5;
+    QState *state6;
+    QState *state7;
+
+    state1 = createGeometryState(button1, QRect(100, 0, 50, 50),
+                                 button2, QRect(150, 0, 50, 50),
+                                 button3, QRect(200, 0, 50, 50),
+                                 button4, QRect(250, 0, 50, 50),
+                                 group);
+    state2 = createGeometryState(button1, QRect(250, 100, 50, 50),
+                                 button2, QRect(250, 150, 50, 50),
+                                 button3, QRect(250, 200, 50, 50),
+                                 button4, QRect(250, 250, 50, 50),
+                                 group);
+    state3 = createGeometryState(button1, QRect(150, 250, 50, 50),
+                                 button2, QRect(100, 250, 50, 50),
+                                 button3, QRect(50, 250, 50, 50),
+                                 button4, QRect(0, 250, 50, 50),
+                                 group);
+    state4 = createGeometryState(button1, QRect(0, 150, 50, 50),
+                                 button2, QRect(0, 100, 50, 50),
+                                 button3, QRect(0, 50, 50, 50),
+                                 button4, QRect(0, 0, 50, 50),
+                                 group);
+    state5 = createGeometryState(button1, QRect(100, 100, 50, 50),
+                                 button2, QRect(150, 100, 50, 50),
+                                 button3, QRect(100, 150, 50, 50),
+                                 button4, QRect(150, 150, 50, 50),
+                                 group);
+    state6 = createGeometryState(button1, QRect(50, 50, 50, 50),
+                                 button2, QRect(200, 50, 50, 50),
+                                 button3, QRect(50, 200, 50, 50),
+                                 button4, QRect(200, 200, 50, 50),
+                                 group);
+    state7 = createGeometryState(button1, QRect(0, 0, 50, 50),
+                                 button2, QRect(250, 0, 50, 50),
+                                 button3, QRect(0, 250, 50, 50),
+                                 button4, QRect(250, 250, 50, 50),
+                                 group);
+    group->setInitialState(state1);
+
+    QParallelAnimationGroup animationGroup;
+    QSequentialAnimationGroup *subGroup;
+
+    QPropertyAnimation *anim = new QPropertyAnimation(button4, "geometry");
+    anim->setDuration(1000);
+    anim->setEasingCurve(QEasingCurve::OutElastic);
+    animationGroup.addAnimation(anim);
+
+    subGroup = new QSequentialAnimationGroup(&animationGroup);
+    subGroup->addPause(100);
+    anim = new QPropertyAnimation(button3, "geometry");
+    anim->setDuration(1000);
+    anim->setEasingCurve(QEasingCurve::OutElastic);
+    subGroup->addAnimation(anim);
+
+    subGroup = new QSequentialAnimationGroup(&animationGroup);
+    subGroup->addPause(150);
+    anim = new QPropertyAnimation(button2, "geometry");
+    anim->setDuration(1000);
+    anim->setEasingCurve(QEasingCurve::OutElastic);
+    subGroup->addAnimation(anim);
+
+    subGroup = new QSequentialAnimationGroup(&animationGroup);
+    subGroup->addPause(200);
+    anim = new QPropertyAnimation(button1, "geometry");
+    anim->setDuration(1000);
+    anim->setEasingCurve(QEasingCurve::OutElastic);
+    subGroup->addAnimation(anim);
+
+    StateSwitcher *stateSwitcher = new StateSwitcher(&machine);
+    stateSwitcher->setObjectName("stateSwitcher");
+    group->addTransition(&timer, SIGNAL(timeout()), stateSwitcher);
+    stateSwitcher->addState(state1, &animationGroup);
+    stateSwitcher->addState(state2, &animationGroup);
+    stateSwitcher->addState(state3, &animationGroup);
+    stateSwitcher->addState(state4, &animationGroup);
+    stateSwitcher->addState(state5, &animationGroup);
+    stateSwitcher->addState(state6, &animationGroup);
+    stateSwitcher->addState(state7, &animationGroup);
+
+    machine.addState(group);
+    machine.setInitialState(group);
+    machine.start();
+
+
+    window.resize(300, 300);
+    window.show();
+
+    qsrand(time(0));
+
+    return app.exec();
+}
+
+#include "main.moc"