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-rw-r--r--src/gui/kernel/qgesture.cpp48
-rw-r--r--src/gui/kernel/qgesture.h2
-rw-r--r--src/gui/kernel/qstandardgestures.cpp43
-rw-r--r--src/gui/kernel/qwidget_win.cpp2
4 files changed, 55 insertions, 40 deletions
diff --git a/src/gui/kernel/qgesture.cpp b/src/gui/kernel/qgesture.cpp
index 8075ad9..38e8851 100644
--- a/src/gui/kernel/qgesture.cpp
+++ b/src/gui/kernel/qgesture.cpp
@@ -197,11 +197,44 @@ Qt::GestureState QGesture::state() const
}
/*!
- Sets this gesture's recognition state to \a state.
+ Sets this gesture's recognition state to \a state and emits appropriate
+ signals.
+
+ This functions emits the signals according to the old state and the new
+ \a state, and it should be called after all the internal properties have been
+ initialized.
+
+ \sa started, triggered, finished, cancelled
*/
-void QGesture::setState(Qt::GestureState state)
+void QGesture::updateState(Qt::GestureState state)
{
- d_func()->state = state;
+ Q_D(QGesture);
+ if (d->state == state) {
+ if (state == Qt::GestureUpdated)
+ emit triggered();
+ return;
+ }
+ const Qt::GestureState oldState = d->state;
+ d->state = state;
+ if (state != Qt::NoGesture && oldState > state) {
+ // comparing the state as ints: state should only be changed from
+ // started to (optionally) updated and to finished.
+ qWarning("QGesture::updateState: incorrect new state");
+ return;
+ }
+ if (oldState == Qt::NoGesture)
+ emit started();
+ if (state == Qt::GestureUpdated)
+ emit triggered();
+ else if (state == Qt::GestureFinished)
+ emit finished();
+ else if (state == Qt::NoGesture)
+ emit cancelled();
+
+ if (state == Qt::GestureFinished) {
+ // gesture is finished, so we reset the internal state.
+ d->state = Qt::NoGesture;
+ }
}
/*!
@@ -238,14 +271,13 @@ QGraphicsItem* QGesture::graphicsItem() const
Resets the internal state of the gesture. This function might be called by
the filterEvent() implementation in a derived class, or by the user to
- cancel a gesture. The base class implementation emits the cancelled()
- signal if the state() of the gesture wasn't empty.
+ cancel a gesture. The base class implementation calls
+ updateState(Qt::NoGesture) which emits the cancelled()
+ signal if the state() of the gesture indicated it was active.
*/
void QGesture::reset()
{
- if (state() != Qt::NoGesture)
- emit cancelled();
- setState(Qt::NoGesture);
+ updateState(Qt::NoGesture);
}
QT_END_NAMESPACE
diff --git a/src/gui/kernel/qgesture.h b/src/gui/kernel/qgesture.h
index 0735160..7da37c4 100644
--- a/src/gui/kernel/qgesture.h
+++ b/src/gui/kernel/qgesture.h
@@ -81,7 +81,7 @@ protected:
QGesture(QGesturePrivate &dd, QObject *parent);
bool eventFilter(QObject*, QEvent*);
- void setState(Qt::GestureState state);
+ void updateState(Qt::GestureState state);
Q_SIGNALS:
void started();
diff --git a/src/gui/kernel/qstandardgestures.cpp b/src/gui/kernel/qstandardgestures.cpp
index 2a5e7e8..89de7c8 100644
--- a/src/gui/kernel/qstandardgestures.cpp
+++ b/src/gui/kernel/qstandardgestures.cpp
@@ -114,9 +114,7 @@ bool QPanGesture::event(QEvent *event)
killTimer(d->panFinishedTimer);
d->panFinishedTimer = 0;
d->lastOffset = QSize(0, 0);
- setState(Qt::GestureFinished);
- emit triggered();
- setState(Qt::NoGesture);
+ updateState(Qt::GestureFinished);
}
}
#endif
@@ -127,6 +125,7 @@ bool QPanGesture::event(QEvent *event)
bool QPanGesture::eventFilter(QObject *receiver, QEvent *event)
{
#ifdef Q_WS_WIN
+ Q_D(QPanGesture);
if (receiver->isWidgetType() && event->type() == QEvent::NativeGesture) {
QNativeGestureEvent *ev = static_cast<QNativeGestureEvent*>(event);
QApplicationPrivate *qAppPriv = getQApplicationPrivateInternal();
@@ -135,30 +134,28 @@ bool QPanGesture::eventFilter(QObject *receiver, QEvent *event)
if (it == qAppPriv->widgetGestures.end())
return false;
QPanGesture *gesture = it.value().pan;
- if (!gesture)
+ if (this != gesture)
return false;
- Qt::GestureState nextState = state();
+ Qt::GestureState nextState = Qt::NoGesture;
switch(ev->gestureType) {
case QNativeGestureEvent::GestureBegin:
// next we might receive the first gesture update event, so we
// prepare for it.
- setState(Qt::GestureStarted);
+ d->state = Qt::NoGesture;
return false;
case QNativeGestureEvent::Pan:
nextState = Qt::GestureUpdated;
+ event->accept();
break;
case QNativeGestureEvent::GestureEnd:
- if (state() != QNativeGestureEvent::Pan)
+ if (state() == Qt::NoGesture)
return false; // some other gesture has ended
- setState(Qt::GestureFinished);
nextState = Qt::GestureFinished;
break;
default:
return false;
}
- QPanGesturePrivate *d = gesture->d_func();
- if (state() == Qt::GestureStarted) {
- d->lastPosition = ev->position;
+ if (state() == Qt::NoGesture) {
d->lastOffset = d->totalOffset = QSize();
} else {
d->lastOffset = QSize(ev->position.x() - d->lastPosition.x(),
@@ -166,14 +163,7 @@ bool QPanGesture::eventFilter(QObject *receiver, QEvent *event)
d->totalOffset += d->lastOffset;
}
d->lastPosition = ev->position;
-
- if (state() == Qt::GestureStarted)
- emit gesture->started();
- emit gesture->triggered();
- if (state() == Qt::GestureFinished)
- emit gesture->finished();
- event->accept();
- gesture->setState(nextState);
+ gesture->updateState(nextState);
return true;
}
#endif
@@ -193,7 +183,6 @@ bool QPanGesture::filterEvent(QEvent *event)
d->lastOffset = d->totalOffset = QSize();
} else if (event->type() == QEvent::TouchEnd) {
if (state() != Qt::NoGesture) {
- setState(Qt::GestureFinished);
if (!ev->touchPoints().isEmpty()) {
QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
const QPoint pos = p.pos().toPoint();
@@ -202,10 +191,8 @@ bool QPanGesture::filterEvent(QEvent *event)
d->lastOffset = QSize(pos.x() - lastPos.x(), pos.y() - lastPos.y());
d->totalOffset = QSize(pos.x() - startPos.x(), pos.y() - startPos.y());
}
- emit triggered();
- emit finished();
+ updateState(Qt::GestureFinished);
}
- setState(Qt::NoGesture);
reset();
} else if (event->type() == QEvent::TouchUpdate) {
QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
@@ -216,11 +203,7 @@ bool QPanGesture::filterEvent(QEvent *event)
d->totalOffset = QSize(pos.x() - startPos.x(), pos.y() - startPos.y());
if (d->totalOffset.width() > 10 || d->totalOffset.height() > 10 ||
d->totalOffset.width() < -10 || d->totalOffset.height() < -10) {
- if (state() == Qt::NoGesture)
- setState(Qt::GestureStarted);
- else
- setState(Qt::GestureUpdated);
- emit triggered();
+ updateState(Qt::GestureUpdated);
}
}
#ifdef Q_OS_MAC
@@ -239,16 +222,14 @@ bool QPanGesture::filterEvent(QEvent *event)
d->lastOffset = wev->orientation() == Qt::Horizontal ? QSize(offset, 0) : QSize(0, offset);
if (state() == Qt::NoGesture) {
- setState(Qt::GestureStarted);
d->totalOffset = d->lastOffset;
} else {
- setState(Qt::GestureUpdated);
d->totalOffset += d->lastOffset;
}
killTimer(d->panFinishedTimer);
d->panFinishedTimer = startTimer(200);
- emit triggered();
+ updateState(Qt::GestureUpdated);
#endif
return true;
}
diff --git a/src/gui/kernel/qwidget_win.cpp b/src/gui/kernel/qwidget_win.cpp
index ce853d2..6647f3f 100644
--- a/src/gui/kernel/qwidget_win.cpp
+++ b/src/gui/kernel/qwidget_win.cpp
@@ -2074,6 +2074,8 @@ void QWidgetPrivate::winSetupGestures()
needv = (vbarpolicy == Qt::ScrollBarAlwaysOn
|| (vbarpolicy == Qt::ScrollBarAsNeeded && vbar->minimum() < vbar->maximum()));
singleFingerPanEnabled = asa->d_func()->singleFingerPanEnabled;
+ } else {
+ winid = q->winId();
}
if (qAppPriv->SetGestureConfig) {
GESTURECONFIG gc[2];
generated by cgit v0.12 at 2024-09-25 17:26:31 (GMT)