本文整理汇总了C++中QWheelEvent::accept方法的典型用法代码示例。如果您正苦于以下问题：C++ QWheelEvent::accept方法的具体用法？C++ QWheelEvent::accept怎么用？C++ QWheelEvent::accept使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QWheelEvent的用法示例。
在下文中一共展示了QWheelEvent::accept方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: zoomOnWheelEvent
bool BaseViewer::zoomOnWheelEvent(QEvent * e)
{
if (e->type() == QEvent::Wheel)
{
QWheelEvent * event = static_cast<QWheelEvent*>(e);
// mouse has X units that covers 360 degrees. Zoom when 15 degrees is provided
#if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
QPoint numDegrees = event->angleDelta() / 8;
#else
QPoint numDegrees(0,event->delta() / 8);
#endif
if (!numDegrees.isNull())
{
if (numDegrees.y() >= 15)
{ // Zoom in
if (_zoomLevel+1<=_zoomMaxLevel)
centerOnAtZoom(_zoomLevel+1);
}
else if (numDegrees.y() <= -15)
{ // Zoom out
if (_zoomLevel-1>=_zoomMinLevel)
centerOnAtZoom(_zoomLevel-1);
}
event->accept();
return true;
}
return true;
}
return false;
}示例2: eventFilter
//.........这里部分代码省略.........
}
ox = mevent->x();
oy = mevent->y();
}
else if(mevent->button() == Qt::RightButton ) //Added by AiO
{
//query the cordinates of the mouse for node
char curNodeTitle[1024];
char * curNode;
char *index; //used for search
QMessageBox msgBox;
curNode = node_xy_title(mevent->x(),mevent->y());
if(curNode == 0) return true;
strncpy(curNodeTitle, curNode, 1024-1);
curNodeTitle[1024-1] = 0;
//label ends with ':'
//test for color characters format sym num num TEXT sym :
// replace : -1 with 0 and use &curNodeTitle[3]
//test with popup
if(curNodeTitle[0] == 0x0c)
{
index = strchr(curNodeTitle, ':');
if(index == 0) goto nocolon; //test for no label but color
--index;
--index;
--index;
*index = 0;
msgBox.setText(&curNodeTitle[3]);
clipboard->setText(&curNodeTitle[3]);
}
else
{
nocolon:
msgBox.setText(curNodeTitle);
clipboard->setText(curNodeTitle);
}
msgBox.exec();
}
}
else if ( event->type() == QEvent::MouseButtonRelease )
{
if ( !sticky )
qApp->restoreOverrideCursor();
}
// wheel
else if ( event->type() == QEvent::Wheel )
{
QWheelEvent *wevent = (QWheelEvent *) event;
if ( (qApp->keyboardModifiers() & Qt::ControlModifier) != 0 )
{
wevent->accept();
int numDegrees = wevent->delta() / 8;
int numSteps = numDegrees / 15;
if ( numSteps < 0)
{
numSteps = -numSteps;
for ( int x = 0; x < numSteps; x++ )
zoomOut();
}
else
{
for ( int x = 0; x < numSteps; x++ )
zoomIn();
}
return true;
}
else
{
bool ret = QMainWindow::eventFilter(obj, event);
QAbstractSlider *slider = (QAbstractSlider *) (wevent->orientation() == Qt::Vertical?
canvas->verticalScrollBar() :
canvas->horizontalScrollBar());
int ScrollPos = slider->sliderPosition();
bool reset_slider;
calc_scroll(QAbstractSlider::SliderMove + 100, ScrollPos, reset_slider);
slider->setSliderPosition(ScrollPos);
return ret;
}
}
// keyboard
else if ( event->type() == QEvent::KeyPress )
{
QKeyEvent *kevent = (QKeyEvent *) event;
int key = kevent->key();
KeyDown(key, kevent->modifiers());
if ( key == 0 )
{
event->accept();
return true;
}
}
}
return QMainWindow::eventFilter(obj, event);
}示例3: eventFilter
bool MapUserInteraction::eventFilter(QObject *obj, QEvent *event)
{
Q_UNUSED(obj);
Q_D(MapUserInteraction);
Q_ASSERT(d->map);
MapHelper *helper = d->map->helper();
// qDebug() << "Event" << event->type() << helper;
if (!helper)
return false;
switch (event->type()) {
case QEvent::MouseButtonPress: {
QMouseEvent *e = static_cast<QMouseEvent*>(event);
if (helper->mouseDown(e))
e->accept();
break;
}
case QEvent::MouseButtonRelease: {
QMouseEvent *e = static_cast<QMouseEvent*>(event);
if (helper->mouseUp(e))
e->accept();
break;
}
case QEvent::MouseMove: {
QMouseEvent *e = static_cast<QMouseEvent*>(event);
if (helper->mouseMove(e))
e->accept();
break;
}
case QEvent::Wheel: {
QWheelEvent *e = static_cast<QWheelEvent*>(event);
if (helper->wheelEvent(e))
e->accept();
break;
}
case QEvent::KeyPress: {
QKeyEvent *e = static_cast<QKeyEvent*>(event);
if (helper->keyPress(e))
e->accept();
break;
}
case QEvent::KeyRelease: {
QKeyEvent *e = static_cast<QKeyEvent*>(event);
if (helper->keyRelease(e))
e->accept();
break;
}
case QEvent::Gesture: {
#if 0
static bool even = false;
even = !even; // ХЗ почему, но ТАП-ХОЛД срабатывает дважды. Чётные срабатывание откидываем
if (even)
helper->gesture(static_cast<QGestureEvent *>(event));
#endif
break;
#if 0
if (QGesture *swipe = ge->gesture(Qt::SwipeGesture)) {
LogD("GE") << "SwipeGesture";
static_cast<QSwipeGesture *>(swipe);
}
if (QGesture *pan = ge->gesture(Qt::PanGesture)) {
static_cast<QPanGesture *>(pan);
LogD("GE") << "PanGesture";
}
#endif
}
case QEvent::TouchBegin:
{
QTouchEvent *e = static_cast<QTouchEvent *>(event);
if (helper->touch(e))
e->accept();
QList<QTouchEvent::TouchPoint> pts = e->touchPoints();
if (pts.size() == 1) {
QRectF r = pts.first().sceneRect();
r.moveCenter(r.center() - d->map->position());
}
break;
}
case QEvent::TouchEnd:
{
QTouchEvent *e = static_cast<QTouchEvent *>(event);
if (helper->touch(e))
e->accept();
QList<QTouchEvent::TouchPoint> pts = e->touchPoints();
if (pts.size() == 1) {
QRectF r = pts.first().sceneRect();
//.........这里部分代码省略.........