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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qnamespace.h>
#include "qqmlaccessible.h"
#ifndef QT_NO_ACCESSIBILITY
QT_BEGIN_NAMESPACE
QString Q_GUI_EXPORT qTextBeforeOffsetFromString(int offset, QAccessible2::BoundaryType boundaryType,
int *startOffset, int *endOffset, const QString& text);
QString Q_GUI_EXPORT qTextAtOffsetFromString(int offset, QAccessible2::BoundaryType boundaryType,
int *startOffset, int *endOffset, const QString& text);
QString Q_GUI_EXPORT qTextAfterOffsetFromString(int offset, QAccessible2::BoundaryType boundaryType,
int *startOffset, int *endOffset, const QString& text);
QQmlAccessible::QQmlAccessible(QObject *object)
:QAccessibleObject(object)
{
}
void *QQmlAccessible::interface_cast(QAccessible::InterfaceType t)
{
if (t == QAccessible::ActionInterface)
return static_cast<QAccessibleActionInterface*>(this);
return QAccessibleObject::interface_cast(t);
}
QQmlAccessible::~QQmlAccessible()
{
}
QAccessibleInterface *QQmlAccessible::childAt(int x, int y) const
{
// Note that this function will disregard stacking order.
// (QAccessibleQuickView::childAt() does this correctly and more efficient)
// If the item clips its children, we can return early if the coordinate is outside its rect
if (clipsChildren()) {
if (!rect().contains(x, y))
return 0;
}
for (int i = childCount() - 1; i >= 0; --i) {
QAccessibleInterface *childIface = child(i);
if (childIface && !childIface->state().invisible) {
if (childIface->rect().contains(x, y))
return childIface;
}
delete childIface;
}
return 0;
}
QAccessible::State QQmlAccessible::state() const
{
QAccessible::State state;
//QRect viewRect(QPoint(0, 0), m_implementation->size());
//QRect itemRect(m_item->scenePos().toPoint(), m_item->boundingRect().size().toSize());
QRect viewRect_ = viewRect();
QRect itemRect = rect();
// qDebug() << "viewRect" << viewRect << "itemRect" << itemRect;
// error case:
if (viewRect_.isNull() || itemRect.isNull()) {
state.invisible = true;
}
if (!viewRect_.intersects(itemRect)) {
state.offscreen = true;
// state.invisible = true; // no set at this point to ease development
}
if (!object()->property("visible").toBool() || qFuzzyIsNull(object()->property("opacity").toDouble())) {
state.invisible = true;
}
if ((role() == QAccessible::CheckBox || role() == QAccessible::RadioButton) && object()->property("checked").toBool()) {
state.checked = true;
}
if (role() == QAccessible::EditableText)
state.focusable = true;
//qDebug() << "state?" << m_item->property("state").toString() << m_item->property("status").toString() << m_item->property("visible").toString();
return state;
}
QStringList QQmlAccessible::actionNames() const
{
QStringList actions;
switch (role()) {
case QAccessible::PushButton:
actions << QAccessibleActionInterface::pressAction();
break;
case QAccessible::RadioButton:
case QAccessible::CheckBox:
actions << QAccessibleActionInterface::checkAction()
<< QAccessibleActionInterface::uncheckAction()
<< QAccessibleActionInterface::pressAction();
break;
case QAccessible::Slider:
case QAccessible::SpinBox:
case QAccessible::ScrollBar:
actions << QAccessibleActionInterface::increaseAction()
<< QAccessibleActionInterface::decreaseAction();
break;
default:
break;
}
return actions;
}
void QQmlAccessible::doAction(const QString &actionName)
{
// Look for and call the accessible[actionName]Action() function on the item.
// This allows for overriding the default action handling.
const QByteArray functionName = "accessible" + actionName.toLatin1() + "Action";
if (object()->metaObject()->indexOfMethod(functionName + "()") != -1) {
QMetaObject::invokeMethod(object(), functionName);
return;
}
// Role-specific default action handling follows. Items are excepted to provide
// properties according to role conventions. These will then be read and/or updated
// by the accessibility system.
// Checkable roles : checked
// Value-based roles : (via the value interface: value, minimumValue, maximumValue), stepSize
switch (role()) {
case QAccessible::RadioButton:
case QAccessible::CheckBox: {
QVariant checked = object()->property("checked");
if (checked.isValid()) {
if (actionName == QAccessibleActionInterface::pressAction()) {
object()->setProperty("checked", QVariant(!checked.toBool()));
} else if (actionName == QAccessibleActionInterface::checkAction()) {
object()->setProperty("checked", QVariant(true));
} else if (actionName == QAccessibleActionInterface::uncheckAction()) {
object()->setProperty("checked", QVariant(false));
}
}
break;
}
case QAccessible::Slider:
case QAccessible::SpinBox:
case QAccessible::Dial:
case QAccessible::ScrollBar: {
if (actionName != QAccessibleActionInterface::increaseAction() &&
actionName != QAccessibleActionInterface::decreaseAction())
break;
// Update the value using QAccessibleValueInterface, respecting
// the minimum and maximum value (if set). Also check for and
// use the "stepSize" property on the item
if (QAccessibleValueInterface *valueIface = valueInterface()) {
QVariant valueV = valueIface->currentValue();
qreal newValue = valueV.toInt();
QVariant stepSizeV = object()->property("stepSize");
qreal stepSize = stepSizeV.isValid() ? stepSizeV.toReal() : qreal(1.0);
if (actionName == QAccessibleActionInterface::increaseAction()) {
newValue += stepSize;
} else {
newValue -= stepSize;
}
QVariant minimumValueV = valueIface->minimumValue();
if (minimumValueV.isValid()) {
newValue = qMax(newValue, minimumValueV.toReal());
}
QVariant maximumValueV = valueIface->maximumValue();
if (maximumValueV.isValid()) {
newValue = qMin(newValue, maximumValueV.toReal());
}
valueIface->setCurrentValue(QVariant(newValue));
}
break;
}
default:
break;
}
}
QStringList QQmlAccessible::keyBindingsForAction(const QString &actionName) const
{
Q_UNUSED(actionName)
return QStringList();
}
QT_END_NAMESPACE
#endif // QT_NO_ACCESSIBILITY
|
