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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
**
** BSD License Usage
** Alternatively, 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 The Qt Company Ltd 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 2.1
import QtQuick.Controls 1.1
import QtQuick.Controls.Private 1.0
/*!
\qmltype ScrollViewHeader
\internal
\inqmlmodule QtQuick.Controls.Private
*/
Item {
id: wheelarea
property alias horizontalScrollBar: hscrollbar
property alias verticalScrollBar: vscrollbar
property bool blockUpdates: false
property int availableHeight
property int availableWidth
property int contentHeight
property int contentWidth
property real originX
property real originY
property bool active
property int leftMargin: outerFrame ? root.__style.padding.left : 0
property int rightMargin: outerFrame ? root.__style.padding.right : 0
property int topMargin: outerFrame ? root.__style.padding.top : 0
property int bottomMargin: outerFrame ? root.__style.padding.bottom : 0
anchors.fill: parent
property bool recursionGuard: false
function doLayout() {
if (!recursionGuard) {
recursionGuard = true
wheelarea.availableWidth = viewport.width
wheelarea.availableHeight = viewport.height
wheelarea.contentWidth = flickableItem !== null ? flickableItem.contentWidth : 0
wheelarea.contentHeight = flickableItem !== null ? flickableItem.contentHeight : 0
wheelarea.originX = flickableItem !== null ? flickableItem.originX : 0
wheelarea.originY = flickableItem !== null ? flickableItem.originY : 0
recursionGuard = false
}
}
Connections {
target: viewport
onWidthChanged: doLayout()
onHeightChanged: doLayout()
}
Connections {
target: flickableItem
onContentWidthChanged: doLayout()
onContentHeightChanged: doLayout()
}
Connections {
target: flickableItem
onContentXChanged: {
hscrollbar.flash()
vscrollbar.flash()
}
onContentYChanged: {
hscrollbar.flash()
vscrollbar.flash()
}
}
Loader {
id: cornerFill
z: 1
sourceComponent: __style.corner
anchors.right: parent.right
anchors.bottom: parent.bottom
anchors.bottomMargin: bottomMargin
anchors.rightMargin: rightMargin
width: visible ? vscrollbar.width : 0
height: visible ? hscrollbar.height : 0
visible: hscrollbar.visible && !hscrollbar.isTransient && vscrollbar.visible && !vscrollbar.isTransient
}
ScrollBar {
id: hscrollbar
isTransient: !!__panel && !!__panel.isTransient
active: !!__panel && (__panel.sunken || __panel.activeControl !== "none")
enabled: !isTransient || __panel.visible
orientation: Qt.Horizontal
visible: contentWidth > availableWidth
height: visible ? implicitHeight : 0
z: 1
maximumValue: contentWidth > availableWidth ? originX + contentWidth - availableWidth : 0
minimumValue: originX
anchors.bottom: parent.bottom
anchors.left: parent.left
anchors.right: cornerFill.left
anchors.leftMargin: leftMargin
anchors.bottomMargin: bottomMargin
onValueChanged: {
if (!blockUpdates) {
flickableItem.contentX = value
}
}
Binding {
target: hscrollbar.__panel
property: "raised"
value: vscrollbar.active || wheelarea.active
when: hscrollbar.isTransient
}
Binding {
target: hscrollbar.__panel
property: "visible"
value: true
when: !hscrollbar.isTransient || wheelarea.active
}
function flash() {
if (hscrollbar.isTransient) {
hscrollbar.__panel.on = true
hscrollbar.__panel.visible = true
hFlasher.start()
}
}
Timer {
id: hFlasher
interval: 10
onTriggered: hscrollbar.__panel.on = false
}
}
ScrollBar {
id: vscrollbar
isTransient: !!__panel && !!__panel.isTransient
active: !!__panel && (__panel.sunken || __panel.activeControl !== "none")
enabled: !isTransient || __panel.visible
orientation: Qt.Vertical
visible: contentHeight > availableHeight
width: visible ? implicitWidth : 0
z: 1
anchors.bottom: cornerFill.top
maximumValue: contentHeight > availableHeight ? originY + contentHeight - availableHeight + __viewTopMargin : 0
minimumValue: originY
anchors.right: parent.right
anchors.top: parent.top
anchors.topMargin: __scrollBarTopMargin + topMargin
anchors.rightMargin: rightMargin
onValueChanged: {
if (flickableItem && !blockUpdates && enabled) {
flickableItem.contentY = value
}
}
Binding {
target: vscrollbar.__panel
property: "raised"
value: hscrollbar.active || wheelarea.active
when: vscrollbar.isTransient
}
Binding {
target: vscrollbar.__panel
property: "visible"
value: true
when: !vscrollbar.isTransient || wheelarea.active
}
function flash() {
if (vscrollbar.isTransient) {
vscrollbar.__panel.on = true
vscrollbar.__panel.visible = true
vFlasher.start()
}
}
Timer {
id: vFlasher
interval: 10
onTriggered: vscrollbar.__panel.on = false
}
}
}
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