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qt: Add touch event support

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1633>
This commit is contained in:
Vivienne Watermeier 2022-02-23 12:53:04 +01:00 committed by GStreamer Marge Bot
parent 59199a0131
commit ea2f686487
2 changed files with 69 additions and 0 deletions
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68
subprojects/gst-plugins-good/ext/qt/qtitem.cc
View file

@ -124,6 +124,12 @@ QtGLVideoItem::QtGLVideoItem()
setAcceptedMouseButtons(Qt::AllButtons);
setAcceptHoverEvents(true);
#if (QT_VERSION >= QT_VERSION_CHECK(5, 10, 0))
setAcceptTouchEvents(true);
#else
GST_INFO ("Qt version is below 5.10, touchscreen events will not work");
#endif
GST_DEBUG ("%p init Qt Video Item", this);
}
@ -484,6 +490,68 @@ QtGLVideoItem::hoverMoveEvent(QHoverEvent * event)
g_mutex_unlock (&this->priv->lock);
}
void
QtGLVideoItem::touchEvent(QTouchEvent * event)
{
g_mutex_lock (&this->priv->lock);
/* can't do anything when we don't have input format */
if (!this->priv->caps) {
g_mutex_unlock (&this->priv->lock);
return;
}
GstElement *element = GST_ELEMENT_CAST (g_weak_ref_get (&this->priv->sink));
if (element == NULL)
return;
if (event->type() == QEvent::TouchCancel) {
gst_navigation_send_event_simple (GST_NAVIGATION (element),
gst_navigation_event_new_touch_cancel ());
} else {
const QList<QTouchEvent::TouchPoint> points = event->touchPoints();
gboolean sent_event = FALSE;
for (int i = 0; i < points.count(); i++) {
GstEvent *nav_event;
QPointF pos = mapPointToStreamSize(points[i].pos());
switch (points[i].state()) {
case Qt::TouchPointPressed:
nav_event = gst_navigation_event_new_touch_down ((guint) points[i].id(),
pos.x(), pos.y(), (gdouble) points[i].pressure());
break;
case Qt::TouchPointMoved:
nav_event = gst_navigation_event_new_touch_motion ((guint) points[i].id(),
pos.x(), pos.y(), (gdouble) points[i].pressure());
break;
case Qt::TouchPointReleased:
nav_event = gst_navigation_event_new_touch_up ((guint) points[i].id(),
pos.x(), pos.y());
break;
/* Don't send an event if the point did not change */
default:
nav_event = NULL;
break;
}
if (nav_event) {
gst_navigation_send_event_simple (GST_NAVIGATION (element), nav_event);
sent_event = TRUE;
}
}
/* Group simultaneos touch events with a frame event */
if (sent_event) {
gst_navigation_send_event_simple (GST_NAVIGATION (element),
gst_navigation_event_new_touch_frame ());
}
}
g_object_unref (element);
g_mutex_unlock (&this->priv->lock);
}
void
QtGLVideoItem::sendMouseEvent(QMouseEvent * event, gboolean is_press)
{

1
subprojects/gst-plugins-good/ext/qt/qtitem.h
View file

@ -103,6 +103,7 @@ protected:
void hoverMoveEvent (QHoverEvent *) override;
void mousePressEvent(QMouseEvent*) override;
void mouseReleaseEvent(QMouseEvent*) override;
void touchEvent(QTouchEvent*) override;
private: