aboutsummaryrefslogtreecommitdiffstats
path: root/src/imports/controls/qquickswipeview.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/imports/controls/qquickswipeview.cpp')
-rw-r--r--src/imports/controls/qquickswipeview.cpp346
1 files changed, 346 insertions, 0 deletions
diff --git a/src/imports/controls/qquickswipeview.cpp b/src/imports/controls/qquickswipeview.cpp
new file mode 100644
index 00000000..f86e8c8c
--- /dev/null
+++ b/src/imports/controls/qquickswipeview.cpp
@@ -0,0 +1,346 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Controls module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickswipeview_p.h"
+
+#include <QtQuickTemplates/private/qquickcontainer_p_p.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+ \qmltype SwipeView
+ \inherits Container
+ \instantiates QQuickSwipeView
+ \inqmlmodule QtQuick.Controls
+ \ingroup navigation
+ \brief A swipe view control.
+
+ TODO
+*/
+
+class QQuickSwipeViewPrivate : public QQuickContainerPrivate
+{
+ Q_DECLARE_PUBLIC(QQuickSwipeView)
+
+public:
+ QQuickSwipeViewPrivate() : updatingCurrent(false) { }
+
+ void resizeItem(QQuickItem *item);
+ void resizeItems();
+ void _q_updateCurrent();
+
+ void itemInserted(int index, QQuickItem *item) Q_DECL_OVERRIDE;
+ void itemMoved(int from, int to) Q_DECL_OVERRIDE;
+
+ static QQuickSwipeViewPrivate *get(QQuickSwipeView *view);
+
+ bool updatingCurrent;
+};
+
+void QQuickSwipeViewPrivate::resizeItems()
+{
+ Q_Q(QQuickSwipeView);
+ const int count = q->count();
+ for (int i = 0; i < count; ++i) {
+ QQuickItem *item = itemAt(i);
+ if (item)
+ item->setSize(QSizeF(contentItem->width(), contentItem->height()));
+ }
+}
+
+void QQuickSwipeViewPrivate::_q_updateCurrent()
+{
+ Q_Q(QQuickSwipeView);
+ if (!updatingCurrent)
+ q->setCurrentIndex(contentItem ? contentItem->property("currentIndex").toInt() : -1);
+}
+
+void QQuickSwipeViewPrivate::itemInserted(int, QQuickItem *item)
+{
+ Q_Q(QQuickSwipeView);
+ if (q->isComponentComplete())
+ item->setSize(QSizeF(contentItem->width(), contentItem->height()));
+}
+
+void QQuickSwipeViewPrivate::itemMoved(int from, int to)
+{
+ Q_Q(QQuickSwipeView);
+ updatingCurrent = true;
+ if (from == currentIndex)
+ q->setCurrentIndex(to);
+ else if (from < currentIndex && to >= currentIndex)
+ q->setCurrentIndex(currentIndex - 1);
+ else if (from > currentIndex && to <= currentIndex)
+ q->setCurrentIndex(currentIndex + 1);
+ updatingCurrent = false;
+}
+
+
+QQuickSwipeViewPrivate *QQuickSwipeViewPrivate::get(QQuickSwipeView *view)
+{
+ return view->d_func();
+}
+
+QQuickSwipeView::QQuickSwipeView(QQuickItem *parent) :
+ QQuickContainer(*(new QQuickSwipeViewPrivate), parent)
+{
+ setFlag(ItemIsFocusScope);
+ setActiveFocusOnTab(true);
+}
+
+QQuickSwipeViewAttached *QQuickSwipeView::qmlAttachedProperties(QObject *object)
+{
+ QQuickItem *item = qobject_cast<QQuickItem *>(object);
+ if (!item) {
+ qWarning() << "SwipeView: attached properties must be accessed from within a child item";
+ return Q_NULLPTR;
+ }
+
+ return new QQuickSwipeViewAttached(item);
+}
+
+void QQuickSwipeView::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
+{
+ Q_D(QQuickSwipeView);
+ QQuickContainer::geometryChanged(newGeometry, oldGeometry);
+ d->resizeItems();
+}
+
+void QQuickSwipeView::contentItemChange(QQuickItem *newItem, QQuickItem *oldItem)
+{
+ QQuickContainer::contentItemChange(newItem, oldItem);
+ if (oldItem)
+ disconnect(oldItem, SIGNAL(currentIndexChanged()), this, SLOT(_q_updateCurrent()));
+ if (newItem)
+ connect(newItem, SIGNAL(currentIndexChanged()), this, SLOT(_q_updateCurrent()));
+}
+
+/*!
+ \qmlattachedproperty int QtQuickControls2::SwipeView::index
+
+ This attached property holds the index of each child item in the SwipeView.
+
+ It is attached to each child item of the SwipeView.
+*/
+
+/*!
+ \qmlattachedproperty bool QtQuickControls2::SwipeView::isCurrentItem
+
+ This attached property is \c true if this child is the current item.
+
+ It is attached to each child item of the SwipeView.
+*/
+
+/*!
+ \qmlattachedproperty SwipeView QtQuickControls2::SwipeView::view
+
+ This attached property holds the view that manages this child item.
+
+ It is attached to each child item of the SwipeView.
+*/
+
+class QQuickSwipeViewAttachedPrivate : public QObjectPrivate, public QQuickItemChangeListener
+{
+ Q_DECLARE_PUBLIC(QQuickSwipeViewAttached)
+public:
+ QQuickSwipeViewAttachedPrivate(QQuickItem *item) :
+ item(item),
+ swipeView(Q_NULLPTR),
+ index(-1),
+ isCurrent(false)
+ {
+ }
+
+ ~QQuickSwipeViewAttachedPrivate() {
+ }
+
+ void updateView(QQuickItem *parent);
+
+ void itemChildAdded(QQuickItem *, QQuickItem *) Q_DECL_OVERRIDE;
+ void itemChildRemoved(QQuickItem *, QQuickItem *) Q_DECL_OVERRIDE;
+ void itemParentChanged(QQuickItem *, QQuickItem *) Q_DECL_OVERRIDE;
+
+ void updateIndex();
+ void updateIsCurrent();
+
+ void setView(QQuickSwipeView *view);
+ void setIndex(int i);
+ void setIsCurrent(bool current);
+
+ QQuickItem *item;
+ QQuickSwipeView *swipeView;
+ int index;
+ // Better to store this so that we don't need to lump its calculation
+ // together with index's calculation, as it would otherwise need to know
+ // the old index to know if it should emit the change signal.
+ bool isCurrent;
+};
+
+void QQuickSwipeViewAttachedPrivate::updateIndex()
+{
+ setIndex(swipeView ? QQuickSwipeViewPrivate::get(swipeView)->contentModel->indexOf(item, Q_NULLPTR) : -1);
+}
+
+void QQuickSwipeViewAttachedPrivate::updateIsCurrent()
+{
+ setIsCurrent(swipeView ? swipeView->currentIndex() == index : false);
+}
+
+void QQuickSwipeViewAttachedPrivate::setView(QQuickSwipeView *view)
+{
+ if (view == swipeView)
+ return;
+
+ if (swipeView) {
+ QQuickItemPrivate *p = QQuickItemPrivate::get(swipeView);
+ p->removeItemChangeListener(this, QQuickItemPrivate::Children);
+
+ disconnect(swipeView, &QQuickSwipeView::currentIndexChanged,
+ this, &QQuickSwipeViewAttachedPrivate::updateIsCurrent);
+ disconnect(swipeView, &QQuickSwipeView::contentChildrenChanged,
+ this, &QQuickSwipeViewAttachedPrivate::updateIndex);
+ }
+
+ swipeView = view;
+
+ if (swipeView) {
+ QQuickItemPrivate *p = QQuickItemPrivate::get(swipeView);
+ p->addItemChangeListener(this, QQuickItemPrivate::Children);
+
+ connect(swipeView, &QQuickSwipeView::currentIndexChanged,
+ this, &QQuickSwipeViewAttachedPrivate::updateIsCurrent);
+ connect(swipeView, &QQuickSwipeView::contentChildrenChanged,
+ this, &QQuickSwipeViewAttachedPrivate::updateIndex);
+ }
+
+ Q_Q(QQuickSwipeViewAttached);
+ emit q->viewChanged();
+
+ updateIndex();
+ updateIsCurrent();
+}
+
+void QQuickSwipeViewAttachedPrivate::setIsCurrent(bool current)
+{
+ if (current != isCurrent) {
+ isCurrent = current;
+ Q_Q(QQuickSwipeViewAttached);
+ emit q->isCurrentItemChanged();
+ }
+}
+
+void QQuickSwipeViewAttachedPrivate::setIndex(int i)
+{
+ if (i != index) {
+ index = i;
+ Q_Q(QQuickSwipeViewAttached);
+ emit q->indexChanged();
+ }
+}
+
+void QQuickSwipeViewAttachedPrivate::updateView(QQuickItem *parent)
+{
+ // parent can be, e.g.:
+ // - The contentItem of a ListView (typically the case)
+ // - A non-visual or weird type like TestCase, when child items are created from components
+ // wherein the attached properties are used
+ // - null, when the item was removed with removeItem()
+ QQuickSwipeView *view = Q_NULLPTR;
+ if (parent) {
+ view = qobject_cast<QQuickSwipeView*>(parent);
+ if (!view) {
+ if (parent->parentItem() && parent->parentItem()->property("contentItem").isValid()) {
+ // The parent is the contentItem of some kind of view.
+ view = qobject_cast<QQuickSwipeView*>(parent->parentItem()->parentItem());
+ }
+ }
+ }
+
+ setView(view);
+}
+
+void QQuickSwipeViewAttachedPrivate::itemChildAdded(QQuickItem *, QQuickItem *)
+{
+ updateIndex();
+}
+
+void QQuickSwipeViewAttachedPrivate::itemChildRemoved(QQuickItem *, QQuickItem *)
+{
+ updateIndex();
+}
+
+void QQuickSwipeViewAttachedPrivate::itemParentChanged(QQuickItem *, QQuickItem *parent)
+{
+ updateView(parent);
+}
+
+QQuickSwipeViewAttached::QQuickSwipeViewAttached(QQuickItem *item) :
+ QObject(*(new QQuickSwipeViewAttachedPrivate(item)), item)
+{
+ Q_D(QQuickSwipeViewAttached);
+ if (item->parentItem()) {
+ d->updateView(item->parentItem());
+ } else {
+ QQuickItemPrivate *p = QQuickItemPrivate::get(item);
+ p->addItemChangeListener(d, QQuickItemPrivate::Parent);
+ }
+}
+
+QQuickSwipeViewAttached::~QQuickSwipeViewAttached()
+{
+}
+
+QQuickSwipeView *QQuickSwipeViewAttached::view() const
+{
+ Q_D(const QQuickSwipeViewAttached);
+ return d->swipeView;
+}
+
+int QQuickSwipeViewAttached::index() const
+{
+ Q_D(const QQuickSwipeViewAttached);
+ return d->index;
+}
+
+bool QQuickSwipeViewAttached::isCurrentItem() const
+{
+ Q_D(const QQuickSwipeViewAttached);
+ return d->swipeView ? d->swipeView->currentIndex() == d->index : false;
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qquickswipeview_p.cpp"