1 /****************************************************************************
3 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4 ** All rights reserved.
5 ** Contact: Nokia Corporation (qt-info@nokia.com)
7 ** This file is part of the Qt Components project.
9 ** $QT_BEGIN_LICENSE:BSD$
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13 ** modification, are permitted provided that the following conditions are
15 ** * Redistributions of source code must retain the above copyright
16 ** notice, this list of conditions and the following disclaimer.
17 ** * Redistributions in binary form must reproduce the above copyright
18 ** notice, this list of conditions and the following disclaimer in
19 ** the documentation and/or other materials provided with the
21 ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22 ** the names of its contributors may be used to endorse or promote
23 ** products derived from this software without specific prior written
26 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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36 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
39 ****************************************************************************/
47 Component.onCompleted: priv.layoutChildren()
48 onChildrenChanged: priv.layoutChildren()
49 onWidthChanged: priv.layoutChildren()
50 onHeightChanged: priv.layoutChildren()
53 if (event.key == Qt.Key_Right || event.key == Qt.Key_Left) {
54 if (event.key == Qt.Key_Right || priv.mirrored) {
55 var oldIndex = priv.currentButtonIndex()
56 if (oldIndex != root.children.length - 1) {
57 priv.tabGroup.currentTab = root.children[oldIndex + 1].tab
60 } else if (event.key == Qt.Key_Left || priv.mirrored) {
61 var oldIndex = priv.currentButtonIndex()
63 priv.tabGroup.currentTab = root.children[oldIndex - 1].tab
74 property Item firstButton: root.children.length > 0 ? root.children[0] : null
75 property Item firstTab: firstButton ? (firstButton.tab != null ? firstButton.tab : null) : null
76 property Item tabGroup: firstTab ? (firstTab.parent ? firstTab.parent.parent : null) : null
77 property bool mirrored: root.LayoutMirroring.enabled
79 onMirroredChanged: layoutChildren()
81 function currentButtonIndex() {
82 for (var i = 0; i < root.children.length; ++i) {
83 if (root.children[i].tab == tabGroup.currentTab)
89 function layoutChildren() {
90 var childCount = root.children.length
93 if (childCount != 0) {
94 var itemWidth = root.width / childCount
95 var itemIndex = mirrored ? childCount - 1 : 0
96 var increment = mirrored ? - 1 : 1
98 for (var i = 0; i < childCount; ++i, itemIndex += increment) {
99 var child = root.children[itemIndex]
100 child.x = i * itemWidth
102 child.width = itemWidth
103 child.height = root.height
105 if (child.implicitWidth != undefined) {
106 contentWidth = Math.max(contentWidth, child.implicitWidth * childCount)
107 contentHeight = Math.max(contentHeight, child.implicitHeight)
111 root.implicitWidth = contentWidth
112 root.implicitHeight = contentHeight