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39
40
41#include "qguiapplication.h"
42
43#include <private/qobject_p.h>
44#include "qkeymapper_p.h"
45
46#include <private/qguiapplication_p.h>
47#include <qpa/qplatformintegration.h>
48
49QT_BEGIN_NAMESPACE
50
51/*!
52 \class QKeyMapper
53 \since 4.2
54 \internal
55
56 \sa QObject
57*/
58
59/*!
60 Constructs a new key mapper.
61*/
62QKeyMapper::QKeyMapper()
63 : QObject(*new QKeyMapperPrivate, nullptr)
64{
65}
66
67/*!
68 Destroys the key mapper.
69*/
70QKeyMapper::~QKeyMapper()
71{
72}
73
74QList<int> QKeyMapper::possibleKeys(QKeyEvent *e)
75{
76 QList<int> result;
77
78 if (!e->nativeScanCode()) {
79 if (e->key() && (e->key() != Qt::Key_unknown))
80 result << int(e->key() + e->modifiers());
81 else if (!e->text().isEmpty())
82 result << int(e->text().at(i: 0).unicode() + e->modifiers());
83 return result;
84 }
85
86 return instance()->d_func()->possibleKeys(e);
87}
88
89extern bool qt_sendSpontaneousEvent(QObject *receiver, QEvent *event); // in qapplication_*.cpp
90void QKeyMapper::changeKeyboard()
91{
92 instance()->d_func()->clearMappings();
93
94 // ## TODO: Support KeyboardLayoutChange on QPA
95#if 0
96 // inform all toplevel widgets of the change
97 QEvent e(QEvent::KeyboardLayoutChange);
98 QWidgetList list = QApplication::topLevelWidgets();
99 for (int i = 0; i < list.size(); ++i) {
100 QWidget *w = list.at(i);
101 qt_sendSpontaneousEvent(w, &e);
102 }
103#endif
104}
105
106Q_GLOBAL_STATIC(QKeyMapper, keymapper)
107/*!
108 Returns the pointer to the single instance of QKeyMapper in the application.
109 If none yet exists, the function ensures that one is created.
110*/
111QKeyMapper *QKeyMapper::instance()
112{
113 return keymapper();
114}
115
116QKeyMapperPrivate *qt_keymapper_private()
117{
118 return QKeyMapper::instance()->d_func();
119}
120
121QKeyMapperPrivate::QKeyMapperPrivate()
122{
123 keyboardInputLocale = QLocale::system();
124 keyboardInputDirection = keyboardInputLocale.textDirection();
125}
126
127QKeyMapperPrivate::~QKeyMapperPrivate()
128{
129 // clearMappings();
130}
131
132void QKeyMapperPrivate::clearMappings()
133{
134}
135
136QList<int> QKeyMapperPrivate::possibleKeys(QKeyEvent *e)
137{
138 QList<int> result = QGuiApplicationPrivate::platformIntegration()->possibleKeys(e);
139 if (!result.isEmpty())
140 return result;
141
142 if (e->key() && (e->key() != Qt::Key_unknown))
143 result << int(e->key() + e->modifiers());
144 else if (!e->text().isEmpty())
145 result << int(e->text().at(i: 0).unicode() + e->modifiers());
146 return result;
147}
148
149QT_END_NAMESPACE
150

source code of qtbase/src/gui/kernel/qkeymapper.cpp