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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 2.1
import QtQuick.Controls 1.0
import QtQuick.Controls.Private 1.0
import "../Styles/Settings.js" as Settings
/*!
\qmltype ScrollBar
\internal
\inqmlmodule QtQuick.Controls.Private 1.0
*/
Item {
id: scrollbar
property int orientation: Qt.Horizontal
property alias minimumValue: slider.minimumValue
property alias maximumValue: slider.maximumValue
property alias value: slider.value
property Component style: Qt.createComponent("../" + Settings.THEME_PATH + "/ScrollBarStyle.qml", scrollbar)
property alias styleItem: loader.item
Accessible.role: Accessible.ScrollBar
implicitWidth: loader.implicitWidth
implicitHeight: loader.implicitHeight
readonly property alias upPressed: internal.upPressed
readonly property alias downPressed: internal.downPressed
readonly property alias pageUpPressed: internal.pageUpPressed
readonly property alias pageDownPressed: internal.pageDownPressed
readonly property alias handlePressed: internal.handlePressed
MouseArea {
id: internal
property bool upPressed
property bool downPressed
property bool pageUpPressed
property bool pageDownPressed
property bool handlePressed
property bool horizontal: orientation === Qt.Horizontal
property int pageStep: internal.horizontal ? width : height
property int singleStep: 20
property bool scrollToClickposition: internal.scrollToClickPosition
anchors.fill: parent
property bool autoincrement: false
property bool scrollToClickPosition: styleItem ? styleItem.scrollToClickPosition : 0
// Update hover item
onEntered: if (!pressed) styleItem.activeControl = styleItem.hitTest(mouseX, mouseY)
onExited: if (!pressed) styleItem.activeControl = "none"
onMouseXChanged: if (!pressed) styleItem.activeControl = styleItem.hitTest(mouseX, mouseY)
hoverEnabled: true
property var pressedX
property var pressedY
property int oldPosition
property int grooveSize
Timer {
running: upPressed || downPressed || pageUpPressed || pageDownPressed
interval: 350
onTriggered: internal.autoincrement = true
}
Timer {
running: internal.autoincrement
interval: 60
repeat: true
onTriggered: {
if (upPressed && internal.containsMouse)
internal.decrement();
else if (downPressed && internal.containsMouse)
internal.increment();
else if (pageUpPressed)
internal.decrementPage();
else if (pageDownPressed)
internal.incrementPage();
}
}
onPositionChanged: {
if (pressed && styleItem.activeControl === "handle") {
if (!horizontal)
slider.position = oldPosition + (mouseY - pressedY)
else
slider.position = oldPosition + (mouseX - pressedX)
}
}
onPressed: {
styleItem.activeControl = styleItem.hitTest(mouseX, mouseY)
scrollToClickposition = scrollToClickPosition
var handleRect = styleItem.subControlRect("handle")
grooveSize = horizontal ? styleItem.subControlRect("groove").width -
handleRect.width:
styleItem.subControlRect("groove").height -
handleRect.height;
if (styleItem.activeControl === "handle") {
pressedX = mouseX;
pressedY = mouseY;
internal.handlePressed = true;
oldPosition = slider.position;
} else if (styleItem.activeControl === "up") {
decrement();
internal.upPressed = Qt.binding(function() {return containsMouse});
} else if (styleItem.activeControl === "down") {
increment();
internal.downPressed = Qt.binding(function() {return containsMouse});
} else if (!scrollToClickposition){
if (styleItem.activeControl === "upPage") {
decrementPage();
internal.pageUpPressed = true;
} else if (styleItem.activeControl === "downPage") {
incrementPage();
internal.pageDownPressed = true;
}
} else {
slider.position = horizontal ? mouseX - handleRect.width/2
: mouseY - handleRect.height/2
}
}
onReleased: {
styleItem.activeControl = styleItem.hitTest(mouseX, mouseY);
autoincrement = false;
internal.upPressed = false;
internal.downPressed = false;
internal.handlePressed = false;
internal.pageUpPressed = false;
internal.pageDownPressed = false;
}
function incrementPage() {
value += pageStep
if (value > maximumValue)
value = maximumValue
}
function decrementPage() {
value -= pageStep
if (value < minimumValue)
value = minimumValue
}
function increment() {
value += singleStep
if (value > maximumValue)
value = maximumValue
}
function decrement() {
value -= singleStep
if (value < minimumValue)
value = minimumValue
}
Loader {
id: loader
property Item control: scrollbar
sourceComponent: style
anchors.fill: parent
}
RangeModel {
id: slider
minimumValue: 0.0
maximumValue: 1.0
value: 0
stepSize: 0.0
inverted: false
positionAtMaximum: internal.grooveSize
}
}
}
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