1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/*
SPDX-FileCopyrightText: 2014-2015 Eike Hein <hein@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "wheelinterceptor.h"
#include <QCoreApplication>
WheelInterceptor::WheelInterceptor(QQuickItem *parent)
: QQuickItem(parent)
{
}
WheelInterceptor::~WheelInterceptor()
{
}
QQuickItem *WheelInterceptor::destination() const
{
return m_destination;
}
void WheelInterceptor::setDestination(QQuickItem *destination)
{
if (m_destination != destination) {
m_destination = destination;
Q_EMIT destinationChanged();
}
}
void WheelInterceptor::wheelEvent(QWheelEvent *event)
{
if (m_destination) {
QCoreApplication::sendEvent(m_destination, event);
}
Q_EMIT wheelMoved(event->angleDelta());
}
QQuickItem *WheelInterceptor::findWheelArea(QQuickItem *parent) const
{
if (!parent) {
return nullptr;
}
const QList<QQuickItem *> childItems = parent->childItems();
for (QQuickItem *child : childItems) {
// HACK: ScrollView adds the WheelArea below its flickableItem with
// z==-1. This is reasonable non-risky considering we know about
// everything else in there, and worst case we break the mouse wheel.
if (child->z() >= -1) {
return child;
}
}
return nullptr;
}
#include "moc_wheelinterceptor.cpp"
|
