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39
40#include "qquickwindow.h"
41#include "qquickitem.h"
42#include "qquickwindowattached_p.h"
43
44QT_BEGIN_NAMESPACE
45
46// QDoc comments must go in qquickwindow.cpp to avoid overwriting the Window docs
47
48QQuickWindowAttached::QQuickWindowAttached(QObject* attachee)
49 : QObject(attachee)
50 , m_window(nullptr)
51{
52 m_attachee = qobject_cast<QQuickItem*>(object: attachee);
53 if (m_attachee && m_attachee->window()) // It might not be in a window yet
54 windowChange(m_attachee->window());
55 if (m_attachee)
56 connect(sender: m_attachee, signal: &QQuickItem::windowChanged, receiver: this, slot: &QQuickWindowAttached::windowChange);
57}
58
59QWindow::Visibility QQuickWindowAttached::visibility() const
60{
61 return (m_window ? m_window->visibility() : QWindow::Hidden);
62}
63
64bool QQuickWindowAttached::isActive() const
65{
66 return (m_window ? m_window->isActive() : false);
67}
68
69QQuickItem *QQuickWindowAttached::activeFocusItem() const
70{
71 return (m_window ? m_window->activeFocusItem() : nullptr);
72}
73
74QQuickItem *QQuickWindowAttached::contentItem() const
75{
76 return (m_window ? m_window->contentItem() : nullptr);
77}
78
79int QQuickWindowAttached::width() const
80{
81 return (m_window ? m_window->width() : 0);
82}
83
84int QQuickWindowAttached::height() const
85{
86 return (m_window ? m_window->height() : 0);
87}
88
89QQuickWindow *QQuickWindowAttached::window() const
90{
91 return m_window;
92}
93
94void QQuickWindowAttached::windowChange(QQuickWindow *window)
95{
96 if (window != m_window) {
97 QQuickWindow* oldWindow = m_window;
98 m_window = window;
99
100 if (oldWindow)
101 oldWindow->disconnect(receiver: this);
102
103 emit windowChanged();
104
105 if (!oldWindow || !window || window->visibility() != oldWindow->visibility())
106 emit visibilityChanged();
107 if (!oldWindow || !window || window->isActive() != oldWindow->isActive())
108 emit activeChanged();
109 if (!oldWindow || !window || window->activeFocusItem() != oldWindow->activeFocusItem())
110 emit activeFocusItemChanged();
111 emit contentItemChanged();
112 if (!oldWindow || !window || window->width() != oldWindow->width())
113 emit widthChanged();
114 if (!oldWindow || !window || window->height() != oldWindow->height())
115 emit heightChanged();
116
117 if (!window)
118 return;
119
120 // QQuickWindowQmlImpl::visibilityChanged also exists, and window might even
121 // be QQuickWindowQmlImpl, but that's not what we are connecting to.
122 // So this is actual window state rather than a buffered or as-requested one.
123 // If we used the metaobject connect syntax there would be a warning:
124 // QMetaObjectPrivate::indexOfSignalRelative - QMetaObject::indexOfSignal:
125 // signal visibilityChanged(QWindow::Visibility) from QQuickWindow redefined in QQuickWindowQmlImpl
126 connect(sender: window, signal: &QQuickWindow::visibilityChanged,
127 receiver: this, slot: &QQuickWindowAttached::visibilityChanged);
128 connect(sender: window, signal: &QQuickWindow::activeChanged,
129 receiver: this, slot: &QQuickWindowAttached::activeChanged);
130 connect(sender: window, signal: &QQuickWindow::activeFocusItemChanged,
131 receiver: this, slot: &QQuickWindowAttached::activeFocusItemChanged);
132 connect(sender: window, signal: &QQuickWindow::widthChanged,
133 receiver: this, slot: &QQuickWindowAttached::widthChanged);
134 connect(sender: window, signal: &QQuickWindow::heightChanged,
135 receiver: this, slot: &QQuickWindowAttached::heightChanged);
136 }
137}
138
139QT_END_NAMESPACE
140
141#include "moc_qquickwindowattached_p.cpp"
142

source code of qtdeclarative/src/quick/items/qquickwindowattached.cpp