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Diffstat (limited to 'src/plugins/accessible/qtquick1/qaccessibledeclarativeitem.cpp')
| -rw-r--r-- | src/plugins/accessible/qtquick1/qaccessibledeclarativeitem.cpp | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/src/plugins/accessible/qtquick1/qaccessibledeclarativeitem.cpp b/src/plugins/accessible/qtquick1/qaccessibledeclarativeitem.cpp new file mode 100644 index 0000000000..202023990b --- /dev/null +++ b/src/plugins/accessible/qtquick1/qaccessibledeclarativeitem.cpp @@ -0,0 +1,290 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative 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 "qaccessibledeclarativeitem.h" + +#include <QtQuick1/qdeclarativeitem.h> +#include <QtQuick1/private/qdeclarativeaccessibleattached_p.h> + +QT_BEGIN_NAMESPACE + +QAccessibleDeclarativeItem::QAccessibleDeclarativeItem(QGraphicsObject *item, QGraphicsView *view) + :QDeclarativeAccessible(item) + ,m_item(item) + ,m_view(view) +{ + +} + +int QAccessibleDeclarativeItem::childCount() const +{ + QList<QGraphicsItem *> children = m_item->childItems(); + return children.count(); +} + +QRect QAccessibleDeclarativeItem::rect() const +{ + QRectF sceneRect = m_item->sceneTransform().mapRect(m_item->boundingRect()); + QPoint pos = m_view->mapFromScene(m_view->mapToGlobal(sceneRect.topLeft().toPoint())); + QSize size = sceneRect.size().toSize(); + return QRect(pos, size); +} + +QRect QAccessibleDeclarativeItem::viewRect() const +{ + QPoint screenPos = m_view->mapToGlobal(m_view->pos()); + return QRect(screenPos, m_view->size()); +} + +bool QAccessibleDeclarativeItem::clipsChildren() const +{ + return static_cast<QDeclarativeItem *>(m_item)->clip(); +} + +static inline bool isAncestor(const QObject *ancestorCandidate, const QObject *child) +{ + while (child) { + if (child == ancestorCandidate) + return true; + child = child->parent(); + } + return false; +} + + +QAccessibleInterface *QAccessibleDeclarativeItem::parent() const +{ + QGraphicsItem *parent = m_item->parentItem(); + QGraphicsObject *parentObj = parent ? parent->toGraphicsObject() : 0; + if (parent && !parentObj) + qWarning("Can not make QGraphicsItems accessible"); + QAccessibleInterface *ancestor = (parentObj + ? new QAccessibleDeclarativeItem(parentObj, m_view) + : QAccessible::queryAccessibleInterface(m_view)); + return ancestor; +} + +QAccessibleInterface *QAccessibleDeclarativeItem::child(int index) const +{ + QList<QGraphicsItem *> children = m_item->childItems(); + + if (index >= children.count()) + return 0; + + QGraphicsItem *child = children.at(index); + QGraphicsObject *childObject = qobject_cast<QGraphicsObject *>(child); + if (!childObject) + return 0; + + return new QAccessibleDeclarativeItem(childObject, m_view); +} + +int QAccessibleDeclarativeItem::navigate(QAccessible::RelationFlag rel, int entry, QAccessibleInterface **target) const +{ + //qDebug() << "QAccessibleDeclarativeItem navigate" << rel << entry; + Q_ASSERT(entry >= 0); + + *target = 0; + if (entry == 0) { + *target = new QAccessibleDeclarativeItem(m_item->toGraphicsObject(), m_view); + return 0; + } + + switch (rel) { + case QAccessible::Child: { + QList<QGraphicsItem *> children = m_item->childItems(); + const int childIndex = entry - 1; + + if (childIndex >= children.count()) + return -1; + + QGraphicsItem *child = children.at(childIndex); + QGraphicsObject *childObject = qobject_cast<QGraphicsObject *>(child); + if (!childObject) + return -1; + + *target = new QAccessibleDeclarativeItem(childObject, m_view); + return 0; + break;} + case QAccessible::Ancestor: { + Q_ASSERT(entry >= 1); + QGraphicsItem *parent = m_item->parentItem(); + QGraphicsObject *parentObj = parent ? parent->toGraphicsObject() : 0; + if (parent && !parentObj) + qWarning("Can not make QGraphicsItems accessible"); + QAccessibleInterface *ancestor = (parentObj + ? new QAccessibleDeclarativeItem(parentObj, m_view) + : QAccessible::queryAccessibleInterface(m_view)); + if (entry == 1) { + *target = ancestor; + return 0; + } else if (entry > 1) { + int ret = ancestor->navigate(QAccessible::Ancestor, entry - 1, target); + delete ancestor; + return ret; + } + break;} + case QAccessible::Sibling: { + QAccessibleInterface *iface = 0; + if (navigate(QAccessible::Ancestor, 1, &iface) == 0) { + if (iface) { + int ret = iface->navigate(QAccessible::Child, entry, target); + delete iface; + return ret; + } + } + return -1; + break;} + case QAccessible::FocusChild: { + QGraphicsObject *focusObject = 0; + if (m_item->hasFocus()) { + focusObject = m_item->toGraphicsObject(); + } else { + if (QGraphicsItem *focusItem = m_view->scene()->focusItem()) { + if (m_item->isAncestorOf(focusItem)) { + focusObject = focusItem->toGraphicsObject(); + } + } + } + //qDebug() << "QAccessibleDeclarativeItem navigate QAccessible::FocusChild" << rel << entry; + if (focusObject) { + *target = new QAccessibleDeclarativeItem(focusObject, m_view); + return 0; + } + } + default: break; + } + + return -1; + +} + +int QAccessibleDeclarativeItem::indexOfChild(const QAccessibleInterface *iface) const +{ + // ### No QAccessibleInterfaces are created with a QGraphicsItem. + // However, we want to support QML, not QGraphicsView in general. + // And since the UI is written in QML, this means we can assume that *all* + // QGraphicsItems are actually QGraphicsObjects + + const QGraphicsObject *childObj = static_cast<QGraphicsObject*>(iface->object()); + if (m_item == childObj) + return 0; + + QList<QGraphicsItem*> kids = m_item->childItems(); + int index = kids.indexOf(const_cast<QGraphicsItem*>(static_cast<const QGraphicsItem*>(childObj))); + if (index != -1) { + ++index; + } + return index; +} + +QFlags<QAccessible::StateFlag> QAccessibleDeclarativeItem::state() const +{ + QAccessible::State state = QAccessible::Normal; + + if (m_item->hasFocus()) { + state |= QAccessible::Focused; + } + return state; +} + +QAccessible::Role QAccessibleDeclarativeItem::role() const +{ + // ### Workaround for setAccessibleRole() not working. + // Text items are special since they are defined + // entirely from C++ (setting the role from QML works.) +// if (qobject_cast<QDeclarative1Text*>(m_item)) +// return QAccessible::StaticText; + + QVariant v = QDeclarativeAccessibleAttached::property(m_item, "role"); + bool ok; + QAccessible::Role role = (QAccessible::Role)v.toInt(&ok); + if (!ok) // Not sure if this check is needed. + role = QAccessible::Pane; + return role; +} + +bool QAccessibleDeclarativeItem::isAccessible() const +{ + return true; +} + +QString QAccessibleDeclarativeItem::text(QAccessible::Text textType) const +{ + // handles generic behaviour not specific to an item + switch (textType) { + case QAccessible::Name: { + QVariant accessibleName = QDeclarativeAccessibleAttached::property(object(), "name"); + if (!accessibleName.isNull()) + return accessibleName.toString(); + break;} + case QAccessible::Description: { + QVariant accessibleDecription = QDeclarativeAccessibleAttached::property(object(), "description"); + if (!accessibleDecription.isNull()) + return accessibleDecription.toString(); + break;} + case QAccessible::Value: + case QAccessible::Help: + case QAccessible::Accelerator: + default: + break; + } + + // the following blocks handles item-specific behaviour + if (role() == QAccessible::EditableText) { + if (textType == QAccessible::Value) { + QVariant text = object()->property("text"); + return text.toString(); + } else if (textType == QAccessible::Name) { + return object()->objectName(); + } + } else { + if (textType == QAccessible::Name) { + QVariant text = object()->property("text"); + return text.toString(); + } + } + + + return QString(); +} + +QT_END_NAMESPACE |