Say hello to QtQuick module

This change moves the QtQuick 2 types and C++ API (including
SceneGraph) to a new module (AKA library), QtQuick.

99% of this change is moving files from src/declarative to
src/quick, and from tests/auto/declarative to
tests/auto/qtquick2.

The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to
a plugin, src/imports/qtquick2, just like it's done for QtQuick 1.

All tools, examples, and tests that use QtQuick C++ API have gotten
"QT += quick" or "QT += quick-private" added to their .pro file.

A few additional internal QtDeclarative classes had to be exported
(via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the
QtQuick 2 implementation.

The old header locations (e.g. QtDeclarative/qquickitem.h) will
still be supported for some time, but will produce compile-time
warnings. (To avoid the QtQuick implementation using the
compatibility headers (since QtDeclarative's includepath comes
first), a few include statements were modified, e.g. from
"#include <qsgnode.h>" to "#include <QtQuick/qsgnode.h>".)

There's a change in qtbase that automatically adds QtQuick to the
module list if QtDeclarative is used. Together with the compatibility
headers, this should help reduce the migration pain for existing
projects.

In theory, simply getting an existing QtDeclarative-based project
to compile and link shouldn't require any changes for now -- but
porting to the new scheme is of course recommended, and will
eventually become mandatory.

Task-number: QTBUG-22889
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

1 files changed, 428 insertions, 0 deletions

diff --git a/src/quick/items/qquickdroparea.cpp b/src/quick/items/qquickdroparea.cpp
new file mode 100644
index 0000000000..6ea1467e41
--- /dev/null
+++ b/src/quick/items/qquickdroparea.cpp
@@ -0,0 +1,428 @@
+/****************************************************************************
+**
+** 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 "qquickdroparea_p.h"
+#include "qquickdrag_p.h"
+#include "qquickitem_p.h"
+#include "qquickcanvas.h"
+
+#include <private/qdeclarativeengine_p.h>
+
+QT_BEGIN_NAMESPACE
+
+QQuickDropAreaDrag::QQuickDropAreaDrag(QQuickDropAreaPrivate *d, QObject *parent)
+    : QObject(parent)
+    , d(d)
+{
+}
+
+QQuickDropAreaDrag::~QQuickDropAreaDrag()
+{
+}
+
+class QQuickDropAreaPrivate : public QQuickItemPrivate
+{
+    Q_DECLARE_PUBLIC(QQuickDropArea)
+
+public:
+    QQuickDropAreaPrivate();
+    ~QQuickDropAreaPrivate();
+
+    bool hasMatchingKey(const QStringList &keys) const;
+
+    QStringList getKeys(const QMimeData *mimeData) const;
+
+    QStringList keys;
+    QRegExp keyRegExp;
+    QPointF dragPosition;
+    QQuickDropAreaDrag *drag;
+    QDeclarativeGuard<QObject> source;
+    QDeclarativeGuard<QMimeData> mimeData;
+};
+
+QQuickDropAreaPrivate::QQuickDropAreaPrivate()
+    : drag(0)
+{
+}
+
+QQuickDropAreaPrivate::~QQuickDropAreaPrivate()
+{
+    delete drag;
+}
+
+/*!
+    \qmlclass DropArea QQuickDropArea
+    \inqmlmodule QtQuick 2
+    \brief The DropArea item provides drag and drop handling.
+
+    A DropArea is an invisible item which receives events when other items are
+    dragged over it.
+
+    The Drag attached property can be used to notify the DropArea when an Item is
+    dragged over it.
+
+    The \l keys property can be used to filter drag events which don't include
+    a matching key.
+
+    The \l dropItem property is communicated to the source of a drag event as
+    the recipient of a drop on the drag target.
+
+    The \l delegate property provides a means to specify a component to be
+    instantiated for each active drag over a drag target.
+*/
+
+QQuickDropArea::QQuickDropArea(QQuickItem *parent)
+    : QQuickItem(*new QQuickDropAreaPrivate, parent)
+{
+    setFlags(ItemAcceptsDrops);
+}
+
+QQuickDropArea::~QQuickDropArea()
+{
+}
+
+/*!
+    \qmlproperty bool QtQuick2::DropArea::containsDrag
+
+    This property identifies whether the DropArea currently contains any
+    dragged items.
+*/
+
+bool QQuickDropArea::containsDrag() const
+{
+    Q_D(const QQuickDropArea);
+    return d->mimeData;
+}
+
+/*!
+    \qmlproperty stringlist QtQuick2::DropArea::keys
+
+    This property holds a list of drag keys a DropArea will accept.
+
+    If no keys are listed the DropArea will accept events from any drag source,
+    otherwise the drag source must have at least one compatible key.
+
+    \sa QtQuick2::Drag::keys
+*/
+
+QStringList QQuickDropArea::keys() const
+{
+    Q_D(const QQuickDropArea);
+    return d->keys;
+}
+
+void QQuickDropArea::setKeys(const QStringList &keys)
+{
+    Q_D(QQuickDropArea);
+    if (d->keys != keys) {
+        d->keys = keys;
+
+        if (keys.isEmpty()) {
+            d->keyRegExp = QRegExp();
+        } else {
+            QString pattern = QLatin1Char('(') + QRegExp::escape(keys.first());
+            for (int i = 1; i < keys.count(); ++i)
+                pattern += QLatin1Char('|') + QRegExp::escape(keys.at(i));
+            pattern += QLatin1Char(')');
+            d->keyRegExp = QRegExp(pattern.replace(QLatin1String("\\*"), QLatin1String(".+")));
+        }
+        emit keysChanged();
+    }
+}
+
+QQuickDropAreaDrag *QQuickDropArea::drag()
+{
+    Q_D(QQuickDropArea);
+    if (!d->drag)
+        d->drag = new QQuickDropAreaDrag(d);
+    return d->drag;
+}
+
+/*!
+    \qmlproperty Object QtQuick2::DropArea::drag.source
+
+    This property holds the source of a drag.
+*/
+
+QObject *QQuickDropAreaDrag::source() const
+{
+    return d->source;
+}
+
+/*!
+    \qmlproperty qreal QtQuick2::DropArea::drag.x
+    \qmlproperty qreal QtQuick2::DropArea::drag.y
+
+    These properties hold the coordinates of the last drag event.
+*/
+
+qreal QQuickDropAreaDrag::x() const
+{
+    return d->dragPosition.x();
+}
+
+qreal QQuickDropAreaDrag::y() const
+{
+    return d->dragPosition.y();
+}
+
+/*!
+    \qmlsignal QtQuick2::DropArea::onPositionChanged(DragEvent drag)
+
+    This handler is called when the position of a drag has changed.
+*/
+
+void QQuickDropArea::dragMoveEvent(QDragMoveEvent *event)
+{
+    Q_D(QQuickDropArea);
+    if (!d->mimeData)
+        return;
+
+    d->dragPosition = event->pos();
+    if (d->drag)
+        emit d->drag->positionChanged();
+
+    event->accept();
+    QQuickDropEvent dragTargetEvent(d, event);
+    emit positionChanged(&dragTargetEvent);
+}
+
+bool QQuickDropAreaPrivate::hasMatchingKey(const QStringList &keys) const
+{
+    if (keyRegExp.isEmpty())
+        return true;
+
+    foreach (const QString &key, keys) {
+        if (keyRegExp.exactMatch(key))
+            return true;
+    }
+    return false;
+}
+
+QStringList QQuickDropAreaPrivate::getKeys(const QMimeData *mimeData) const
+{
+    if (const QQuickDragMimeData *dragMime = qobject_cast<const QQuickDragMimeData *>(mimeData))
+        return dragMime->keys();
+    return mimeData->formats();
+}
+
+/*!
+    \qmlsignal QtQuick2::DropArea::onEntered(DragEvent drag)
+
+    This handler is called when a \a drag enters the bounds of a DropArea.
+*/
+
+void QQuickDropArea::dragEnterEvent(QDragEnterEvent *event)
+{
+    Q_D(QQuickDropArea);
+    const QMimeData *mimeData = event->mimeData();
+    if (!d->effectiveEnable || d->mimeData || !mimeData || !d->hasMatchingKey(d->getKeys(mimeData)))
+        return;
+
+    d->dragPosition = event->pos();
+
+    event->accept();
+    QQuickDropEvent dragTargetEvent(d, event);
+    emit entered(&dragTargetEvent);
+
+    if (event->isAccepted()) {
+        d->mimeData = const_cast<QMimeData *>(mimeData);
+        if (QQuickDragMimeData *dragMime = qobject_cast<QQuickDragMimeData *>(d->mimeData))
+            d->source = dragMime->source();
+        else
+            d->source = event->source();
+        d->dragPosition = event->pos();
+        if (d->drag) {
+            emit d->drag->positionChanged();
+            emit d->drag->sourceChanged();
+        }
+        emit containsDragChanged();
+    }
+}
+
+/*!
+    \qmlsignal QtQuick2::DropArea::onExited()
+
+    This handler is called when a drag exits the bounds of a DropArea.
+*/
+
+void QQuickDropArea::dragLeaveEvent(QDragLeaveEvent *)
+{
+    Q_D(QQuickDropArea);
+    if (!d->mimeData)
+        return;
+
+    emit exited();
+
+    d->mimeData = 0;
+    d->source = 0;
+    emit containsDragChanged();
+    if (d->drag)
+        emit d->drag->sourceChanged();
+}
+
+/*!
+    \qmlsignal QtQuick2::DropArea::onDropped(DragEvent drop)
+
+    This handler is called when a drop event occurs within the bounds of a
+    a DropArea.
+*/
+
+void QQuickDropArea::dropEvent(QDropEvent *event)
+{
+    Q_D(QQuickDropArea);
+    if (!d->mimeData)
+        return;
+
+    QQuickDropEvent dragTargetEvent(d, event);
+    emit dropped(&dragTargetEvent);
+
+    d->mimeData = 0;
+    d->source = 0;
+    emit containsDragChanged();
+    if (d->drag)
+        emit d->drag->sourceChanged();
+}
+
+/*!
+    \qmlclass DragEvent QQuickDragEvent
+    \inqmlmodule QtQuick 2
+    \brief The DragEvent object provides information about a drag event.
+
+    The position of the drag event can be obtained from the \l x and \l y
+    properties, and the \l keys property identifies the drag keys of the event
+    \l source.
+*/
+
+/*!
+    \qmlproperty real QtQuick2::DragEvent::x
+
+    This property holds the x coordinate of a drag event.
+*/
+
+/*!
+    \qmlproperty real QtQuick2::DragEvent::y
+
+    This property holds the y coordinate of a drag event.
+*/
+
+/*!
+    \qmlproperty Object QtQuick2::DragEvent::drag.source
+
+    This property holds the source of a drag event.
+*/
+
+QObject *QQuickDropEvent::source()
+{
+    if (const QQuickDragMimeData *dragMime = qobject_cast<const QQuickDragMimeData *>(event->mimeData()))
+        return dragMime->source();
+    else
+        return event->source();
+}
+
+/*!
+    \qmlproperty stringlist QtQuick2::DragEvent::keys
+
+    This property holds a list of keys identifying the data type or source of a
+    drag event.
+*/
+
+QStringList QQuickDropEvent::keys() const
+{
+    return d->getKeys(event->mimeData());
+}
+
+/*!
+    \qmlproperty enum QtQuick2::DragEvent::action
+
+    This property holds the action that the \l source is to perform on an accepted drop.
+
+    The 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
+*/
+
+/*!
+    \qmlproperty flags QtQuick2::DragEvent::supportedActions
+
+    This property holds the set of \l {action}{actions} supported by the
+    drag source.
+*/
+
+/*!
+    \qmlproperty real QtQuick2::DragEvent::accepted
+
+    This property holds whether the drag event was accepted by a handler.
+
+    The default value is true.
+*/
+
+/*!
+    \qmlmethod void QtQuick2::DragEvent::accept()
+    \qmlmethod void QtQuick2::DragEvent::accept(enum action)
+
+    Accepts the drag event.
+
+    If an \a action is specified it will overwrite the value of the \l action property.
+*/
+
+void QQuickDropEvent::accept(QDeclarativeV8Function *args)
+{
+    Qt::DropAction action = event->dropAction();
+
+    if (args->Length() >= 1) {
+        v8::Local<v8::Value> v = (*args)[0];
+        if (v->IsInt32())
+            action = Qt::DropAction(v->Int32Value());
+    }
+    // get action from arguments.
+    event->setDropAction(action);
+    event->accept();
+}
+
+
+QT_END_NAMESPACE
+