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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Quick Designer Components.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.10
import TransitionItem 1.0
Item {
id: root
width: 200
height: 200
property PageTransition defaultTransition
property PageTransition currentTransition
property PageTransition __forceTransition
property list<PageTransition> transitions
enum EffectEnum {
Instant,
Dissolve,
Fade,
Pop
}
default property alias item: stack.children
property Item currentItem
property int currentIndex: 0
property int maxIndex: 0
Item {
id: stack
visible: false
}
Component.onCompleted: {
root.maxIndex = stack.children.length - 1
root.allChildren = []
for (var i = 0; i < stack.children.length; ++i) {
root.allChildren.push(stack.children[i])
}
/* Assign view to all transitions */
if (defaultTransition) {
defaultTransition.transitionView = root
}
for (i = 0; i < root.transitions.length; ++i) {
var t = root.transitions[i]
t.transitionView = root
}
__setupCurrentItem()
}
onCurrentIndexChanged: {
var nextItem = root.allChildren[root.currentIndex]
var pageTransition = null
/* find correct transition */
for (var i = 0; i < root.transitions.length; ++i) {
var t = root.transitions[i]
if ((t.from === root.currentItem) && (t.to === nextItem)) {
pageTransition = t
}
}
if (pageTransition !== null) {
} else {
pageTransition = root.defaultTransition
}
if (root.currentTransition)
root.currentTransition.__stop()
/* If a specific transition is forced then use this one. */
if (__forceTransition)
pageTransition = __forceTransition
__forceTransition = null
pageTransition.__start(root.currentItem, nextItem)
}
function __setupCurrentItem() {
if (root.currentItem)
root.currentItem.parent = stack
root.currentItem = root.allChildren[root.currentIndex]
root.currentItem.parent = root
root.currentTransition = null
}
function gotoPage(transition) {
var page = transition.page
/* There might be another transition that fits. We are forcing this one. */
__forceTransition = transition
for (var i = 0; i < root.allChildren.length; ++i) {
if (page === root.allChildren[i]) {
root.currentIndex = i
}
}
}
property var allChildren
property Item __fromContentItem: Item {
width: root.width
height: root.height
parent: root
}
property Item __toContentItem: Item {
width: root.width
height: root.height
parent: root
}
}
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