Window(QWidget *parent = 0)
: QWidget(parent)
{
QPushButton *button = new QPushButton(this);
button->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(button);
layout->setContentsMargins(80, 80, 80, 80);
setLayout(layout);
//! [0]
//! [1]
QStateMachine *machine = new QStateMachine(this);
QState *s1 = new QState();
s1->assignProperty(button, "text", "Outside");
QState *s2 = new QState();
s2->assignProperty(button, "text", "Inside");
//! [1]
//! [2]
QEventTransition *enterTransition = new QEventTransition(button, QEvent::Enter);
enterTransition->setTargetState(s2);
s1->addTransition(enterTransition);
//! [2]
//! [3]
QEventTransition *leaveTransition = new QEventTransition(button, QEvent::Leave);
leaveTransition->setTargetState(s1);
s2->addTransition(leaveTransition);
//! [3]
//! [4]
QState *s3 = new QState();
s3->assignProperty(button, "text", "Pressing...");
QEventTransition *pressTransition = new QEventTransition(button, QEvent::MouseButtonPress);
pressTransition->setTargetState(s3);
s2->addTransition(pressTransition);
QEventTransition *releaseTransition = new QEventTransition(button, QEvent::MouseButtonRelease);
releaseTransition->setTargetState(s2);
s3->addTransition(releaseTransition);
//! [4]
//! [5]
machine->addState(s1);
machine->addState(s2);
machine->addState(s3);
machine->setInitialState(s1);
machine->start();
}
QtMaterialTextFieldStateMachine::QtMaterialTextFieldStateMachine(QtMaterialTextField *parent)
: QStateMachine(parent),
m_textField(parent),
m_normalState(new QState),
m_focusedState(new QState),
m_label(0),
m_offsetAnimation(0),
m_colorAnimation(0),
m_progress(0.0)
{
Q_ASSERT(parent);
addState(m_normalState);
addState(m_focusedState);
setInitialState(m_normalState);
QEventTransition *transition;
QPropertyAnimation *animation;
transition = new QEventTransition(parent, QEvent::FocusIn);
transition->setTargetState(m_focusedState);
m_normalState->addTransition(transition);
animation = new QPropertyAnimation(this, "progress", this);
animation->setEasingCurve(QEasingCurve::InCubic);
animation->setDuration(310);
transition->addAnimation(animation);
transition = new QEventTransition(parent, QEvent::FocusOut);
transition->setTargetState(m_normalState);
m_focusedState->addTransition(transition);
animation = new QPropertyAnimation(this, "progress", this);
animation->setEasingCurve(QEasingCurve::OutCubic);
animation->setDuration(310);
transition->addAnimation(animation);
m_normalState->assignProperty(this, "progress", 0);
m_focusedState->assignProperty(this, "progress", 1);
setupProperties();
connect(m_textField, SIGNAL(textChanged(QString)), this, SLOT(setupProperties()));
}
Window(QWidget *parent = 0)
: QWidget(parent)
{
QPushButton *button = new QPushButton(this);
button->setGeometry(QRect(100, 100, 100, 100));
//! [0]
//! [1]
QStateMachine *machine = new QStateMachine(this);
QState *s1 = new QState();
s1->assignProperty(button, "text", "Outside");
QState *s2 = new QState();
s2->assignProperty(button, "text", "Inside");
//! [1]
//! [2]
QEventTransition *enterTransition = new QEventTransition(button, QEvent::Enter);
enterTransition->setTargetState(s2);
s1->addTransition(enterTransition);
//! [2]
//! [3]
QEventTransition *leaveTransition = new QEventTransition(button, QEvent::Leave);
leaveTransition->setTargetState(s1);
s2->addTransition(leaveTransition);
//! [3]
//! [4]
QState *s3 = new QState();
s3->assignProperty(button, "text", "Pressing...");
QEventTransition *pressTransition = new QEventTransition(button, QEvent::MouseButtonPress);
pressTransition->setTargetState(s3);
s2->addTransition(pressTransition);
QEventTransition *releaseTransition = new QEventTransition(button, QEvent::MouseButtonRelease);
releaseTransition->setTargetState(s2);
s3->addTransition(releaseTransition);
//! [4]
//! [5]
machine->addState(s1);
machine->addState(s2);
machine->addState(s3);
machine->setInitialState(s1);
machine->start();
}
ExampleView::ExampleView(QWidget* parent)
: QFrame(parent)
{
_score = 0;
setAcceptDrops(true);
setFocusPolicy(Qt::StrongFocus);
resetMatrix();
_fgPixmap = nullptr;
if (preferences.getBool(PREF_UI_CANVAS_FG_USECOLOR))
_fgColor = preferences.getColor(PREF_UI_CANVAS_FG_COLOR);
else {
_fgPixmap = new QPixmap(preferences.getString(PREF_UI_CANVAS_FG_WALLPAPER));
if (_fgPixmap == 0 || _fgPixmap->isNull())
qDebug("no valid pixmap %s", qPrintable(preferences.getString(PREF_UI_CANVAS_FG_WALLPAPER)));
}
// setup drag canvas state
sm = new QStateMachine(this);
QState* stateActive = new QState;
QState* s1 = new QState(stateActive);
s1->setObjectName("example-normal");
s1->assignProperty(this, "cursor", QCursor(Qt::ArrowCursor));
QState* s = new QState(stateActive);
s->setObjectName("example-drag");
s->assignProperty(this, "cursor", QCursor(Qt::SizeAllCursor));
QEventTransition* cl = new QEventTransition(this, QEvent::MouseButtonRelease);
cl->setTargetState(s1);
s->addTransition(cl);
s1->addTransition(new DragTransitionExampleView(this));
sm->addState(stateActive);
stateActive->setInitialState(s1);
sm->setInitialState(stateActive);
sm->start();
}
//! [0]
PadNavigator::PadNavigator(const QSize &size, QWidget *parent)
: QGraphicsView(parent)
{
//! [0]
//! [1]
// Splash item
SplashItem *splash = new SplashItem;
splash->setZValue(1);
//! [1]
//! [2]
// Pad item
FlippablePad *pad = new FlippablePad(size);
QGraphicsRotation *flipRotation = new QGraphicsRotation(pad);
QGraphicsRotation *xRotation = new QGraphicsRotation(pad);
QGraphicsRotation *yRotation = new QGraphicsRotation(pad);
flipRotation->setAxis(Qt::YAxis);
xRotation->setAxis(Qt::YAxis);
yRotation->setAxis(Qt::XAxis);
pad->setTransformations(QList<QGraphicsTransform *>()
<< flipRotation
<< xRotation << yRotation);
//! [2]
//! [3]
// Back (proxy widget) item
QGraphicsProxyWidget *backItem = new QGraphicsProxyWidget(pad);
QWidget *widget = new QWidget;
form.setupUi(widget);
form.hostName->setFocus();
backItem->setWidget(widget);
backItem->setVisible(false);
backItem->setFocus();
backItem->setCacheMode(QGraphicsItem::ItemCoordinateCache);
const QRectF r = backItem->rect();
backItem->setTransform(QTransform()
.rotate(180, Qt::YAxis)
.translate(-r.width()/2, -r.height()/2));
//! [3]
//! [4]
// Selection item
RoundRectItem *selectionItem = new RoundRectItem(QRectF(-60, -60, 120, 120), Qt::gray, pad);
selectionItem->setZValue(0.5);
//! [4]
//! [5]
// Splash animations
QPropertyAnimation *smoothSplashMove = new QPropertyAnimation(splash, "y");
QPropertyAnimation *smoothSplashOpacity = new QPropertyAnimation(splash, "opacity");
smoothSplashMove->setEasingCurve(QEasingCurve::InQuad);
smoothSplashMove->setDuration(250);
smoothSplashOpacity->setDuration(250);
//! [5]
//! [6]
// Selection animation
QPropertyAnimation *smoothXSelection = new QPropertyAnimation(selectionItem, "x");
QPropertyAnimation *smoothYSelection = new QPropertyAnimation(selectionItem, "y");
QPropertyAnimation *smoothXRotation = new QPropertyAnimation(xRotation, "angle");
QPropertyAnimation *smoothYRotation = new QPropertyAnimation(yRotation, "angle");
smoothXSelection->setDuration(125);
smoothYSelection->setDuration(125);
smoothXRotation->setDuration(125);
smoothYRotation->setDuration(125);
smoothXSelection->setEasingCurve(QEasingCurve::InOutQuad);
smoothYSelection->setEasingCurve(QEasingCurve::InOutQuad);
smoothXRotation->setEasingCurve(QEasingCurve::InOutQuad);
smoothYRotation->setEasingCurve(QEasingCurve::InOutQuad);
//! [6]
//! [7]
// Flip animation setup
QPropertyAnimation *smoothFlipRotation = new QPropertyAnimation(flipRotation, "angle");
QPropertyAnimation *smoothFlipScale = new QPropertyAnimation(pad, "scale");
QPropertyAnimation *smoothFlipXRotation = new QPropertyAnimation(xRotation, "angle");
QPropertyAnimation *smoothFlipYRotation = new QPropertyAnimation(yRotation, "angle");
QParallelAnimationGroup *flipAnimation = new QParallelAnimationGroup(this);
smoothFlipScale->setDuration(500);
smoothFlipRotation->setDuration(500);
smoothFlipXRotation->setDuration(500);
smoothFlipYRotation->setDuration(500);
smoothFlipScale->setEasingCurve(QEasingCurve::InOutQuad);
smoothFlipRotation->setEasingCurve(QEasingCurve::InOutQuad);
smoothFlipXRotation->setEasingCurve(QEasingCurve::InOutQuad);
smoothFlipYRotation->setEasingCurve(QEasingCurve::InOutQuad);
smoothFlipScale->setKeyValueAt(0, qvariant_cast<qreal>(1.0));
smoothFlipScale->setKeyValueAt(0.5, qvariant_cast<qreal>(0.7));
smoothFlipScale->setKeyValueAt(1, qvariant_cast<qreal>(1.0));
flipAnimation->addAnimation(smoothFlipRotation);
flipAnimation->addAnimation(smoothFlipScale);
flipAnimation->addAnimation(smoothFlipXRotation);
flipAnimation->addAnimation(smoothFlipYRotation);
//! [7]
//! [8]
// Flip animation delayed property assignment
QSequentialAnimationGroup *setVariablesSequence = new QSequentialAnimationGroup;
QPropertyAnimation *setFillAnimation = new QPropertyAnimation(pad, "fill");
QPropertyAnimation *setBackItemVisibleAnimation = new QPropertyAnimation(backItem, "visible");
QPropertyAnimation *setSelectionItemVisibleAnimation = new QPropertyAnimation(selectionItem, "visible");
setFillAnimation->setDuration(0);
setBackItemVisibleAnimation->setDuration(0);
setSelectionItemVisibleAnimation->setDuration(0);
setVariablesSequence->addPause(250);
setVariablesSequence->addAnimation(setBackItemVisibleAnimation);
setVariablesSequence->addAnimation(setSelectionItemVisibleAnimation);
setVariablesSequence->addAnimation(setFillAnimation);
flipAnimation->addAnimation(setVariablesSequence);
//! [8]
//! [9]
// Build the state machine
QStateMachine *stateMachine = new QStateMachine(this);
QState *splashState = new QState(stateMachine);
QState *frontState = new QState(stateMachine);
QHistoryState *historyState = new QHistoryState(frontState);
QState *backState = new QState(stateMachine);
//! [9]
//! [10]
frontState->assignProperty(pad, "fill", false);
frontState->assignProperty(splash, "opacity", 0.0);
frontState->assignProperty(backItem, "visible", false);
frontState->assignProperty(flipRotation, "angle", qvariant_cast<qreal>(0.0));
frontState->assignProperty(selectionItem, "visible", true);
backState->assignProperty(pad, "fill", true);
backState->assignProperty(backItem, "visible", true);
backState->assignProperty(xRotation, "angle", qvariant_cast<qreal>(0.0));
backState->assignProperty(yRotation, "angle", qvariant_cast<qreal>(0.0));
backState->assignProperty(flipRotation, "angle", qvariant_cast<qreal>(180.0));
backState->assignProperty(selectionItem, "visible", false);
stateMachine->addDefaultAnimation(smoothXRotation);
stateMachine->addDefaultAnimation(smoothYRotation);
stateMachine->addDefaultAnimation(smoothXSelection);
stateMachine->addDefaultAnimation(smoothYSelection);
stateMachine->setInitialState(splashState);
//! [10]
//! [11]
// Transitions
QEventTransition *anyKeyTransition = new QEventTransition(this, QEvent::KeyPress, splashState);
anyKeyTransition->setTargetState(frontState);
anyKeyTransition->addAnimation(smoothSplashMove);
anyKeyTransition->addAnimation(smoothSplashOpacity);
//! [11]
//! [12]
QKeyEventTransition *enterTransition = new QKeyEventTransition(this, QEvent::KeyPress,
Qt::Key_Enter, backState);
QKeyEventTransition *returnTransition = new QKeyEventTransition(this, QEvent::KeyPress,
Qt::Key_Return, backState);
QKeyEventTransition *backEnterTransition = new QKeyEventTransition(this, QEvent::KeyPress,
Qt::Key_Enter, frontState);
QKeyEventTransition *backReturnTransition = new QKeyEventTransition(this, QEvent::KeyPress,
Qt::Key_Return, frontState);
enterTransition->setTargetState(historyState);
returnTransition->setTargetState(historyState);
backEnterTransition->setTargetState(backState);
backReturnTransition->setTargetState(backState);
enterTransition->addAnimation(flipAnimation);
returnTransition->addAnimation(flipAnimation);
backEnterTransition->addAnimation(flipAnimation);
backReturnTransition->addAnimation(flipAnimation);
//! [12]
//! [13]
// Create substates for each icon; store in temporary grid.
int columns = size.width();
int rows = size.height();
QVector< QVector< QState * > > stateGrid;
stateGrid.resize(rows);
for (int y = 0; y < rows; ++y) {
stateGrid[y].resize(columns);
for (int x = 0; x < columns; ++x)
stateGrid[y][x] = new QState(frontState);
}
frontState->setInitialState(stateGrid[0][0]);
selectionItem->setPos(pad->iconAt(0, 0)->pos());
//! [13]
//! [14]
// Enable key navigation using state transitions
for (int y = 0; y < rows; ++y) {
for (int x = 0; x < columns; ++x) {
QState *state = stateGrid[y][x];
QKeyEventTransition *rightTransition = new QKeyEventTransition(this, QEvent::KeyPress,
Qt::Key_Right, state);
QKeyEventTransition *leftTransition = new QKeyEventTransition(this, QEvent::KeyPress,
Qt::Key_Left, state);
QKeyEventTransition *downTransition = new QKeyEventTransition(this, QEvent::KeyPress,
Qt::Key_Down, state);
QKeyEventTransition *upTransition = new QKeyEventTransition(this, QEvent::KeyPress,
Qt::Key_Up, state);
rightTransition->setTargetState(stateGrid[y][(x + 1) % columns]);
leftTransition->setTargetState(stateGrid[y][((x - 1) + columns) % columns]);
downTransition->setTargetState(stateGrid[(y + 1) % rows][x]);
upTransition->setTargetState(stateGrid[((y - 1) + rows) % rows][x]);
//! [14]
//! [15]
RoundRectItem *icon = pad->iconAt(x, y);
state->assignProperty(xRotation, "angle", -icon->x() / 6.0);
state->assignProperty(yRotation, "angle", icon->y() / 6.0);
state->assignProperty(selectionItem, "x", icon->x());
state->assignProperty(selectionItem, "y", icon->y());
frontState->assignProperty(icon, "visible", true);
backState->assignProperty(icon, "visible", false);
QPropertyAnimation *setIconVisibleAnimation = new QPropertyAnimation(icon, "visible");
setIconVisibleAnimation->setDuration(0);
setVariablesSequence->addAnimation(setIconVisibleAnimation);
}
}
//! [15]
//! [16]
// Scene
QGraphicsScene *scene = new QGraphicsScene(this);
scene->setBackgroundBrush(QPixmap(":/images/blue_angle_swirl.jpg"));
scene->setItemIndexMethod(QGraphicsScene::NoIndex);
scene->addItem(pad);
scene->setSceneRect(scene->itemsBoundingRect());
setScene(scene);
//! [16]
//! [17]
// Adjust splash item to scene contents
const QRectF sbr = splash->boundingRect();
splash->setPos(-sbr.width() / 2, scene->sceneRect().top() - 2);
frontState->assignProperty(splash, "y", splash->y() - 100.0);
scene->addItem(splash);
//! [17]
//! [18]
// View
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setMinimumSize(50, 50);
setViewportUpdateMode(FullViewportUpdate);
setCacheMode(CacheBackground);
setRenderHints(QPainter::Antialiasing
| QPainter::SmoothPixmapTransform
| QPainter::TextAntialiasing);
#ifndef QT_NO_OPENGL
setViewport(new QOpenGLWidget);
#endif
stateMachine->start();
//! [18]
}