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+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Components project.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+** of its contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtDesktop 1.0
+
+WheelArea {
+ id: wheelarea
+
+ property alias horizontalScrollBar: hscrollbar
+ property alias verticalScrollBar: vscrollbar
+ property int macOffset: styleitem.style == "mac" ? 1 : 0
+ property bool blockUpdates: false
+ property int availableHeight : height - (hscrollbar.visible ? hscrollbar.height : 0)
+ property int availableWidth: width - vscrollbar.width
+
+ anchors.fill: parent
+ anchors.margins: frameWidth
+ horizontalMinimumValue: hscrollbar.minimumValue
+ horizontalMaximumValue: hscrollbar.maximumValue
+ verticalMinimumValue: vscrollbar.minimumValue
+ verticalMaximumValue: vscrollbar.maximumValue
+
+ onVerticalValueChanged: {
+ if (!blockUpdates)
+ verticalScrollBar.value = verticalValue
+ }
+
+ onHorizontalValueChanged: {
+ if (!blockUpdates)
+ horizontalScrollBar.value = horizontalValue
+ }
+
+ StyleItem {
+ // This is the filled corner between scrollbars
+ id: cornerFill
+ elementType: "scrollareacorner"
+ width: vscrollbar.width
+ anchors.right: parent.right
+ height: hscrollbar.height
+ anchors.bottom: parent.bottom
+ visible: hscrollbar.visible && vscrollbar.visible
+ }
+
+ ScrollBar {
+ id: hscrollbar
+ orientation: Qt.Horizontal
+ visible: contentWidth > availableWidth
+ maximumValue: contentWidth > availableWidth ? root.contentWidth - availableWidth : 0
+ minimumValue: 0
+ anchors.bottom: parent.bottom
+ anchors.leftMargin: parent.macOffset
+ anchors.bottomMargin: -parent.macOffset
+ anchors.left: parent.left
+ anchors.right: parent.right
+ anchors.rightMargin: vscrollbar.visible ? vscrollbar.width -parent.macOffset: 0
+ onValueChanged: {
+ if (!blockUpdates) {
+ contentX = value
+ horizontalValue = value
+ }
+ }
+ }
+
+ ScrollBar {
+ id: vscrollbar
+ orientation: Qt.Vertical
+ // We cannot bind directly to tree.height due to binding loops so we have to redo the calculation here
+ // visible: contentHeight > availableHeight
+ maximumValue: contentHeight > availableHeight ? root.contentHeight - availableHeight : 0
+ minimumValue: 0
+ anchors.right: parent.right
+ anchors.top: parent.top
+ anchors.bottom: parent.bottom
+ anchors.topMargin: 1//parent.macOffset
+ anchors.rightMargin: -parent.macOffset
+ anchors.bottomMargin: hscrollbar.visible ? hscrollbar.height - parent.macOffset : 0
+
+ onValueChanged: {
+ if (!blockUpdates) {
+ contentY = value
+ verticalValue = value
+ }
+ }
+ }
+}