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Diffstat (limited to 'src/declarative/items/qquickdrag.cpp')
| -rw-r--r-- | src/declarative/items/qquickdrag.cpp | 462 |
1 files changed, 0 insertions, 462 deletions
diff --git a/src/declarative/items/qquickdrag.cpp b/src/declarative/items/qquickdrag.cpp deleted file mode 100644 index 9dcc4ac7fe..0000000000 --- a/src/declarative/items/qquickdrag.cpp +++ /dev/null @@ -1,462 +0,0 @@ -/**************************************************************************** -** -** 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 "qquickdrag_p.h" - -#include <private/qquickitem_p.h> -#include <private/qquickevents_p_p.h> -#include <private/qquickitemchangelistener_p.h> -#include <private/qv8engine_p.h> - -#include <QtGui/qevent.h> - -QT_BEGIN_NAMESPACE - -class QQuickDragAttachedPrivate : public QObjectPrivate, public QQuickItemChangeListener -{ - Q_DECLARE_PUBLIC(QQuickDragAttached) -public: - static QQuickDragAttachedPrivate *get(QQuickDragAttached *attached) { - return static_cast<QQuickDragAttachedPrivate *>(QObjectPrivate::get(attached)); } - - QQuickDragAttachedPrivate() - : attachedItem(0) - , mimeData(0) - , proposedAction(Qt::MoveAction) - , supportedActions(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction) - , active(false) - , listening(false) - { - } - - void itemGeometryChanged(QQuickItem *, const QRectF &, const QRectF &); - void start() { start(supportedActions); } - void start(Qt::DropActions supportedActions); - void setTarget(QQuickItem *item); - - QQuickDragGrabber dragGrabber; - - QDeclarativeGuard<QObject> source; - QDeclarativeGuard<QObject> target; - QQuickItem *attachedItem; - QQuickDragMimeData *mimeData; - Qt::DropAction proposedAction; - Qt::DropActions supportedActions; - bool active : 1; - bool listening : 1; - QPointF hotSpot; - QStringList keys; -}; - -/*! - \qmlclass Drag QQuickDrag - \inqmlmodule QtQuick 2 - \brief The Drag attached property provides drag and drop events for moved Items. - - Using the Drag attached property any Item can made a source of drag and drop - events within a scene. - - When a drag is \l active on an item any change in that items position will - generate a drag events that will be sent to any DropArea that intersects - the with new position of the item. Other items which implement drag and - drop event handlers can also receive these events. - - The following snippet shows how an item can be dragged with a MouseArea. - However, dragging is not limited to mouse drags, anything that can move an item - can generate drag events, this can include touch events, animations and bindings. - - \snippet doc/src/snippets/declarative/drag.qml 0 - - A drag can be terminated either by canceling it with Drag.cancel() or setting - Drag.active to false, or it can be terminated with a drop event by calling - Drag.drop(). If the drop event is accepted Drag.drop() will return the - \l {supportedActions}{drop action} chosen by the recipient of the event, - otherwise it will return Qt.IgnoreAction. - -*/ - -void QQuickDragAttachedPrivate::itemGeometryChanged(QQuickItem *, const QRectF &newGeometry, const QRectF &oldGeometry) -{ - Q_Q(QQuickDragAttached); - if (newGeometry.topLeft() == oldGeometry.topLeft() || !active) - return; - - if (QQuickCanvas *canvas = attachedItem->canvas()) { - QPoint scenePos = attachedItem->mapToScene(hotSpot).toPoint(); - QDragMoveEvent event(scenePos, mimeData->m_supportedActions, mimeData, Qt::NoButton, Qt::NoModifier); - QQuickDropEventEx::setProposedAction(&event, proposedAction); - QQuickCanvasPrivate::get(canvas)->deliverDragEvent(&dragGrabber, &event); - if (target != dragGrabber.target()) { - target = dragGrabber.target(); - emit q->targetChanged(); - } - } -} - -QQuickDragAttached::QQuickDragAttached(QObject *parent) - : QObject(*new QQuickDragAttachedPrivate, parent) -{ - Q_D(QQuickDragAttached); - d->attachedItem = qobject_cast<QQuickItem *>(parent); - d->source = d->attachedItem; -} - -QQuickDragAttached::~QQuickDragAttached() -{ - Q_D(QQuickDragAttached); - delete d->mimeData; -} - -/*! - \qmlattachedproperty bool QtQuick2::Drag::active - - This property holds whether a drag event sequence is currently active. - - Setting this property to true will send a QDragEnter event to the scene - with the item's current position. Setting it to false will send a - QDragLeave event. - - While a drag is active any change in an item's position will send a QDragMove - event with item's new position to the scene. -*/ - -bool QQuickDragAttached::isActive() const -{ - Q_D(const QQuickDragAttached); - return d->active; -} - -void QQuickDragAttached::setActive(bool active) -{ - Q_D(QQuickDragAttached); - if (d->active != active) { - if (active) - d->start(d->supportedActions); - else - cancel(); - } -} - -/*! - \qmlattachedproperty Object QtQuick2::Drag::source - - This property holds an object that is identified to recipients of drag events as - the source of the events. By default this is the item Drag property is attached to. - - Changes to source while a Drag is active don't take effect until a new drag is started. -*/ - -QObject *QQuickDragAttached::source() const -{ - Q_D(const QQuickDragAttached); - return d->source; -} - -void QQuickDragAttached::setSource(QObject *item) -{ - Q_D(QQuickDragAttached); - if (d->source != item) { - d->source = item; - emit sourceChanged(); - } -} - -void QQuickDragAttached::resetSource() -{ - Q_D(QQuickDragAttached); - if (d->source != d->attachedItem) { - d->source = d->attachedItem; - emit sourceChanged(); - } -} - -/*! - \qmlattachedproperty Object QtQuick2::Drag::target - - While a drag is active this property holds the last object to accept an - enter event from the dragged item, if the current drag position doesn't - intersect any accepting targets it is null. - - When a drag is not active this property holds the object that accepted - the drop event that ended the drag, if no object accepted the drop or - the drag was canceled the target will then be null. -*/ - -QObject *QQuickDragAttached::target() const -{ - Q_D(const QQuickDragAttached); - return d->target; -} - -/*! - \qmlattachedproperty QPointF QtQuick2::Drag::hotSpot - - This property holds the drag position relative to the top left of the item. - - By default this is (0, 0). - - Changes to hotSpot will take effect when the next event is sent. -*/ - -QPointF QQuickDragAttached::hotSpot() const -{ - Q_D(const QQuickDragAttached); - return d->hotSpot; -} - -void QQuickDragAttached::setHotSpot(const QPointF &hotSpot) -{ - Q_D(QQuickDragAttached); - if (d->hotSpot != hotSpot) { - d->hotSpot = hotSpot; - emit hotSpotChanged(); - // Send a move event if active? - } -} - -/*! - \qmlattachedproperty stringlist QtQuick2::Drag::keys - - This property holds a list of keys that can be used by a DropArea to filter drag events. - - Changes to keys while a Drag is active don't take effect until a new drag is started. -*/ - -QStringList QQuickDragAttached::keys() const -{ - Q_D(const QQuickDragAttached); - return d->keys; -} - -void QQuickDragAttached::setKeys(const QStringList &keys) -{ - Q_D(QQuickDragAttached); - if (d->keys != keys) { - d->keys = keys; - emit keysChanged(); - } -} - -/*! - \qmlattachedproperty flags QtQuick2::Drag::supportedActions - - This property holds return values of Drag.drop() supported by the drag source. - - Changes to supportedActions while a Drag is active don't take effect - until a new drag is started. -*/ - -Qt::DropActions QQuickDragAttached::supportedActions() const -{ - Q_D(const QQuickDragAttached); - return d->supportedActions; -} - -void QQuickDragAttached::setSupportedActions(Qt::DropActions actions) -{ - Q_D(QQuickDragAttached); - if (d->supportedActions != actions) { - d->supportedActions = actions; - emit supportedActionsChanged(); - } -} - -/*! - \qmlattachedproperty enumeration QtQuick2::Drag::proposedAction - - This property holds an action that is recommended by the drag source as a - return value from Drag.drop(). - - Changes to proposedAction will take effect when the next event is sent. -*/ - -Qt::DropAction QQuickDragAttached::proposedAction() const -{ - Q_D(const QQuickDragAttached); - return d->proposedAction; -} - -void QQuickDragAttached::setProposedAction(Qt::DropAction action) -{ - Q_D(QQuickDragAttached); - if (d->proposedAction != action) { - d->proposedAction = action; - emit proposedActionChanged(); - // send a move event with the new default action if active? - } -} - -void QQuickDragAttachedPrivate::start(Qt::DropActions supportedActions) -{ - Q_Q(QQuickDragAttached); - Q_ASSERT(!active); - - if (QQuickCanvas *canvas = attachedItem ? attachedItem->canvas() : 0) { - if (!mimeData) - mimeData = new QQuickDragMimeData; - if (!listening) { - QQuickItemPrivate::get(attachedItem)->addItemChangeListener(this, QQuickItemPrivate::Geometry); - listening = true; - } - - mimeData->m_source = source; - mimeData->m_supportedActions = supportedActions; - mimeData->m_keys = keys; - active = true; - - QPoint scenePos = attachedItem->mapToScene(hotSpot).toPoint(); - QDragEnterEvent event(scenePos, supportedActions, mimeData, Qt::NoButton, Qt::NoModifier); - QQuickDropEventEx::setProposedAction(&event, proposedAction); - QQuickCanvasPrivate::get(canvas)->deliverDragEvent(&dragGrabber, &event); - - emit q->activeChanged(); - if (target != dragGrabber.target()) { - target = dragGrabber.target(); - emit q->targetChanged(); - } - } -} - -/*! - \qmlattachedmethod void QtQuick2::Drag::start(flags supportedActions) - - Starts sending drag events. - - The optional \a supportedActions argument can be used to override the \l supportedActions - property for the started sequence. -*/ - -void QQuickDragAttached::start(QDeclarativeV8Function *args) -{ - Q_D(QQuickDragAttached); - if (d->active) - cancel(); - - Qt::DropActions supportedActions = d->supportedActions; - // check arguments for supportedActions, maybe data? - if (args->Length() >= 1) { - v8::Local<v8::Value> v = (*args)[0]; - if (v->IsInt32()) - supportedActions = Qt::DropActions(v->Int32Value()); - } - - d->start(supportedActions); -} - -/*! - \qmlattachedmethod enum QtQuick2::Drag::drop() - - Ends a drag sequence by sending a drop event to the target item. - - Returns the action accepted by the target item. If the target item or a parent doesn't accept - the drop event then Qt.IgnoreAction will be returned. - - The returned drop action may be one of: - - \list - \o Qt.CopyAction Copy the data to the target - \o Qt.MoveAction Move the data from the source to the target - \o Qt.LinkAction Create a link from the source to the target. - \o Qt.IgnoreAction Ignore the action (do nothing with the data). - \endlist - -*/ - -int QQuickDragAttached::drop() -{ - Q_D(QQuickDragAttached); - Qt::DropAction acceptedAction = Qt::IgnoreAction; - - if (!d->active) - return acceptedAction; - - QObject *target = 0; - - if (QQuickCanvas *canvas = d->attachedItem->canvas()) { - QPoint scenePos = d->attachedItem->mapToScene(d->hotSpot).toPoint(); - - QDropEvent event( - scenePos, d->mimeData->m_supportedActions, d->mimeData, Qt::NoButton, Qt::NoModifier); - QQuickDropEventEx::setProposedAction(&event, d->proposedAction); - QQuickCanvasPrivate::get(canvas)->deliverDragEvent(&d->dragGrabber, &event); - - if (event.isAccepted()) { - acceptedAction = event.dropAction(); - target = d->dragGrabber.target(); - } - } - - d->active = false; - if (d->target != target) { - d->target = target; - emit targetChanged(); - } - - emit activeChanged(); - return acceptedAction; -} - -/*! - \qmlattachedmethod void QtQuick2::Drag::cancel() - - Ends a drag sequence. -*/ - -void QQuickDragAttached::cancel() -{ - Q_D(QQuickDragAttached); - if (!d->active) - return; - - if (QQuickCanvas *canvas = d->attachedItem->canvas()) { - QDragLeaveEvent event; - QQuickCanvasPrivate::get(canvas)->deliverDragEvent(&d->dragGrabber, &event); - } - - d->active = false; - if (d->target) { - d->target = 0; - emit targetChanged(); - } - emit activeChanged(); -} - -QT_END_NAMESPACE |