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388 lines
9.8 KiB
C++
388 lines
9.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2016-2019 Ivailo Monev
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**
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** This file is part of the QtGui module of the Katie Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qaccessibleobject.h"
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#ifndef QT_NO_ACCESSIBILITY
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#include "qapplication.h"
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#include "qwidget.h"
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#include "qpointer.h"
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#include "qmetaobject.h"
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QT_BEGIN_NAMESPACE
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class QAccessibleObjectPrivate
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{
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public:
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QPointer<QObject> object;
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QList<QByteArray> actionList() const;
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};
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QList<QByteArray> QAccessibleObjectPrivate::actionList() const
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{
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QList<QByteArray> actionList;
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if (!object)
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return actionList;
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const QMetaObject *mo = object->metaObject();
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Q_ASSERT(mo);
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QByteArray defaultAction = QMetaObject::normalizedSignature(
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mo->classInfo(mo->indexOfClassInfo("DefaultSlot")).value());
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for (int i = 0; i < mo->methodCount(); ++i) {
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const QMetaMethod member = mo->method(i);
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if (member.methodType() != QMetaMethod::Slot && member.access() != QMetaMethod::Public)
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continue;
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if (!qstrcmp(member.tag(), "QACCESSIBLE_SLOT")) {
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if (member.signature() == defaultAction)
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actionList.prepend(defaultAction);
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else
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actionList << member.signature();
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}
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}
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return actionList;
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}
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/*!
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\class QAccessibleObject
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\brief The QAccessibleObject class implements parts of the
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QAccessibleInterface for QObjects.
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\ingroup accessibility
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This class is mainly provided for convenience. All subclasses of
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the QAccessibleInterface that provide implementations of non-widget objects
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should use this class as their base class.
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\sa QAccessible, QAccessibleWidget
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*/
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/*!
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Creates a QAccessibleObject for \a object.
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*/
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QAccessibleObject::QAccessibleObject(QObject *object)
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{
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d = new QAccessibleObjectPrivate;
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d->object = object;
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}
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/*!
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Destroys the QAccessibleObject.
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This only happens when a call to release() decrements the internal
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reference counter to zero.
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*/
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QAccessibleObject::~QAccessibleObject()
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{
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delete d;
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}
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/*!
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\reimp
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*/
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QObject *QAccessibleObject::object() const
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{
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#ifndef QT_NO_DEBUG
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if (!d->object)
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qWarning("QAccessibleInterface is invalid. Crash pending...");
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#endif
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return d->object;
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}
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/*!
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\reimp
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*/
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bool QAccessibleObject::isValid() const
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{
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return !d->object.isNull();
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}
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/*! \reimp */
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QRect QAccessibleObject::rect(int) const
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{
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return QRect();
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}
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/*! \reimp */
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void QAccessibleObject::setText(Text, int, const QString &)
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{
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}
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/*! \reimp */
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int QAccessibleObject::userActionCount(int) const
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{
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return 0;
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}
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/*! \reimp */
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bool QAccessibleObject::doAction(int, int, const QVariantList &)
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{
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return false;
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}
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static const char * const action_text[][5] =
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{
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// Name, Description, Value, Help, Accelerator
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{ "Press", "", "", "", "Space" },
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{ "SetFocus", "Passes focus to this widget", "", "", "" },
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{ "Increase", "", "", "", "" },
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{ "Decrease", "", "", "", "" },
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{ "Accept", "", "", "", "" },
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{ "Cancel", "", "", "", "" },
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{ "Select", "", "", "", "" },
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{ "ClearSelection", "", "", "", "" },
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{ "RemoveSelection", "", "", "", "" },
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{ "ExtendSelection", "", "", "", "" },
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{ "AddToSelection", "", "", "", "" }
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};
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/*! \reimp */
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QString QAccessibleObject::actionText(int action, Text t, int child) const
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{
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if (child || action > FirstStandardAction || action < LastStandardAction || t > Accelerator)
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return QString();
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return QString::fromLatin1(action_text[-(action - FirstStandardAction)][t]);
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}
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/*!
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\class QAccessibleApplication
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\brief The QAccessibleApplication class implements the QAccessibleInterface for QApplication.
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\internal
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\ingroup accessibility
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*/
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/*!
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Creates a QAccessibleApplication for the QApplication object referenced by qApp.
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*/
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QAccessibleApplication::QAccessibleApplication()
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: QAccessibleObject(qApp)
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{
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}
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// all toplevel widgets except popups and the desktop
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static QWidgetList topLevelWidgets()
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{
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QWidgetList list;
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const QWidgetList tlw(QApplication::topLevelWidgets());
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for (int i = 0; i < tlw.count(); ++i) {
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QWidget *w = tlw.at(i);
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if (!(w->windowType() == Qt::Popup) && !(w->windowType() == Qt::Desktop))
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list.append(w);
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}
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return list;
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}
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/*! \reimp */
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int QAccessibleApplication::childCount() const
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{
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return topLevelWidgets().count();
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}
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/*! \reimp */
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int QAccessibleApplication::indexOfChild(const QAccessibleInterface *child) const
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{
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if (!child->object()->isWidgetType())
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return -1;
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const QWidgetList tlw(topLevelWidgets());
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int index = tlw.indexOf(static_cast<QWidget*>(child->object()));
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if (index != -1)
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++index;
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return index;
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}
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/*! \reimp */
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int QAccessibleApplication::childAt(int x, int y) const
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{
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const QWidgetList tlw(topLevelWidgets());
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for (int i = 0; i < tlw.count(); ++i) {
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QWidget *w = tlw.at(i);
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if (w->frameGeometry().contains(x,y))
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return i+1;
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}
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return -1;
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}
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/*! \reimp */
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QAccessible::Relation QAccessibleApplication::relationTo(int child, const
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QAccessibleInterface *other, int otherChild) const
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{
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QObject *o = other ? other->object() : 0;
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if (!o)
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return Unrelated;
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if(o == object()) {
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if (child && !otherChild)
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return Child;
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if (!child && otherChild)
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return Ancestor;
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if (!child && !otherChild)
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return Self;
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}
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QWidgetList tlw(topLevelWidgets());
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if (tlw.contains(qobject_cast<QWidget*>(o)))
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return Ancestor;
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for (int i = 0; i < tlw.count(); ++i) {
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QWidget *w = tlw.at(i);
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QObjectList cl = w->findChildren<QObject *>(QString());
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if (cl.contains(o))
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return Ancestor;
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}
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return Unrelated;
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}
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/*! \reimp */
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int QAccessibleApplication::navigate(RelationFlag relation, int entry,
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QAccessibleInterface **target) const
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{
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if (!target)
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return -1;
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*target = 0;
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QObject *targetObject = 0;
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switch (relation) {
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case Self:
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targetObject = object();
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break;
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case Child:
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if (entry > 0 && entry <= childCount()) {
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const QWidgetList tlw(topLevelWidgets());
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if (tlw.count() >= entry)
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targetObject = tlw.at(entry-1);
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} else {
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return -1;
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}
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break;
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case FocusChild:
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targetObject = QApplication::activeWindow();
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break;
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default:
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break;
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}
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*target = QAccessible::queryAccessibleInterface(targetObject);
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return *target ? 0 : -1;
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}
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/*! \reimp */
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QString QAccessibleApplication::text(Text t, int) const
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{
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switch (t) {
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case Name:
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return QApplication::applicationName();
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case Description:
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return QApplication::applicationFilePath();
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default:
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break;
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}
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return QString();
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}
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/*! \reimp */
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QAccessible::Role QAccessibleApplication::role(int) const
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{
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return Application;
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}
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/*! \reimp */
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QAccessible::State QAccessibleApplication::state(int) const
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{
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return QApplication::activeWindow() ? Focused : Normal;
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}
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/*! \reimp */
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int QAccessibleApplication::userActionCount(int) const
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{
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return 1;
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}
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/*! \reimp */
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bool QAccessibleApplication::doAction(int action, int child, const QVariantList ¶m)
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{
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if (action == 0 || action == 1) {
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QWidget *w = 0;
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w = QApplication::activeWindow();
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if (!w)
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w = topLevelWidgets().at(0);
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if (!w)
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return false;
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w->activateWindow();
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return true;
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}
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return QAccessibleObject::doAction(action, child, param);
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}
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/*! \reimp */
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QString QAccessibleApplication::actionText(int action, Text text, int child) const
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{
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QString str;
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if ((action == 0 || action == 1) && !child) switch (text) {
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case Name:
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return QApplication::tr("Activate");
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case Description:
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return QApplication::tr("Activates the program's main window");
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default:
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break;
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}
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return QAccessibleObject::actionText(action, text, child);
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}
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QT_END_NAMESPACE
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#endif //QT_NO_ACCESSIBILITY
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