/usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/Themes/Ambiance/ScrollbarStyle.qml is in ubuntu-ui-toolkit-theme 0.1.46+14.04.20140408.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright 2012 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import QtQuick 2.0
import Ubuntu.Components 0.1
/*
The visuals handle both active and passive modes. This behavior is driven yet by
the styledItem's __inactive property, however should be detected upon runtime based on
the device type.
On active scrollbars, positioning is handled so that the logic updates the flickable's
X/Y content positions, which is then synched with the contentPosition by the main
element.
Style properties used:
- interactive: bool - drives the interactive behavior of the scrollbar
- minimumSliderSize: real - specifies the minimum size of the slider
* overlay
- overlay: bool - true if the scrollbar is overlay type
- overlayOpacityWhenHidden: opacity when hidden
- overlayOpacityWhenShown: opacity when shown
* animations - where duration and easing properties are used only
- scrollbarFadeInAnimation: PropertyAnimation - animation used when fade in
- scrollbarFadeOutAnimation: PropertyAnimation - animation used when fade out
- scrollbarFadeOutPause: int - miliseconds to pause before fade out
* behaviors - animations are used as declared
- sliderAnimation: PropertyAnimation - animation for the slider size
- thumbConnectorFading: PropertyAnimation - animation for the thumb connector
- thumbFading: PropertyAnimation - animation for the thumb fading
* other styling properties
- color sliderColor: color for the slider
- color thumbConnectorColor: thumb connector color
- url forwardThumbReleased: forward thumb image when released
- url forwardThumbPressed: forward thumb image when pressed
- url backwardThumbReleased: backward thumb image when released
- url backwardThumbPressed: backward thumb image when pressed
- real scrollAreaThickness: scrollbar area thickness, the area where the
slider, thumb and thumb-connector appear
- real thumbConnectorMargin: margin of the thumb connector aligned to the
thumb visuals
*/
Item {
id: visuals
// styling properties
property bool interactive: false
property real minimumSliderSize: units.gu(2)
property bool overlay: true
property real overlayOpacityWhenShown: 0.6
property real overlayOpacityWhenHidden: 0.0
property PropertyAnimation scrollbarFadeInAnimation: UbuntuNumberAnimation { duration: UbuntuAnimation.SnapDuration }
property PropertyAnimation scrollbarFadeOutAnimation: UbuntuNumberAnimation { duration: UbuntuAnimation.SlowDuration }
property int scrollbarFadeOutPause: 300
property PropertyAnimation sliderAnimation: UbuntuNumberAnimation {}
property PropertyAnimation thumbConnectorFading: UbuntuNumberAnimation { duration: UbuntuAnimation.SnapDuration }
property PropertyAnimation thumbFading: UbuntuNumberAnimation { duration: UbuntuAnimation.SnapDuration }
property color sliderColor: Theme.palette.normal.base
property real sliderRadius: units.gu(0.5)
property color thumbConnectorColor: "white"
property url forwardThumbReleased: (styledItem.align === Qt.AlignLeading || styledItem.align === Qt.AlignTrailing) ? "artwork/ScrollbarBottomIdle.png" : "artwork/ScrollbarRightIdle.png"
property url forwardThumbPressed: (styledItem.align === Qt.AlignLeading || styledItem.align === Qt.AlignTrailing) ? "artwork/ScrollbarBottomPressed.png" : "artwork/ScrollbarRightPressed.png"
property url backwardThumbReleased: (styledItem.align === Qt.AlignLeading || styledItem.align === Qt.AlignTrailing) ? "artwork/ScrollbarTopIdle.png" : "artwork/ScrollbarLeftIdle.png"
property url backwardThumbPressed: (styledItem.align === Qt.AlignLeading || styledItem.align === Qt.AlignTrailing) ? "artwork/ScrollbarTopPressed.png" : "artwork/ScrollbarLeftPressed.png"
property real scrollAreaThickness: units.gu(0.5)
property real thumbConnectorMargin: units.dp(3)
// helper properties to ease code readability
property Flickable flickableItem: styledItem.flickableItem
property bool isScrollable: styledItem.__private.scrollable && pageSize > 0.0
&& contentSize > 0.0 && contentSize > pageSize
property bool isVertical: ScrollbarUtils.isVertical(styledItem)
property bool frontAligned: (styledItem.align === Qt.AlignLeading)
property bool rearAligned: (styledItem.align === Qt.AlignTrailing)
property bool topAligned: (styledItem.align === Qt.AlignTop)
property bool bottomAligned: (styledItem.align === Qt.AlignBottom)
property real pageSize: (isVertical) ? styledItem.height : styledItem.width
property real contentSize: (isVertical) ? styledItem.flickableItem.contentHeight : styledItem.flickableItem.contentWidth
/*****************************************
Visuals
*****************************************/
anchors.fill: parent
opacity: overlayOpacityWhenHidden
state: {
if (!isScrollable)
return '';
else if (overlay) {
if (flickableItem.moving)
return 'overlay';
else
return 'stopped';
} else
return 'shown';
}
states: [
State {
name: 'stopped'
extend: ''
PropertyChanges {
target: visuals
opacity: overlayOpacityWhenHidden
}
},
State {
name: "shown"
PropertyChanges {
target: visuals
opacity: overlayOpacityWhenShown
}
},
State {
name: 'overlay'
PropertyChanges {
target: visuals
opacity: overlayOpacityWhenShown
}
}
]
transitions: [
Transition {
from: ''
to: 'shown'
NumberAnimation {
target: visuals
property: "opacity"
duration: scrollbarFadeInAnimation.duration
easing: scrollbarFadeInAnimation.easing
}
},
Transition {
from: '*'
to: 'overlay'
NumberAnimation {
target: visuals
property: "opacity"
duration: scrollbarFadeInAnimation.duration
easing: scrollbarFadeInAnimation.easing
}
},
Transition {
from: "overlay"
to: "stopped"
SequentialAnimation {
PauseAnimation { duration: scrollbarFadeOutPause }
NumberAnimation {
target: visuals
property: "opacity"
duration: scrollbarFadeOutAnimation.duration
easing: scrollbarFadeOutAnimation.easing
}
}
}
]
function mapToPoint(map)
{
return Qt.point(map.x, map.y)
}
SmoothedAnimation {
id: scrollAnimation
duration: 200
easing.type: Easing.InOutQuad
target: styledItem.flickableItem
property: (isVertical) ? "contentY" : "contentX"
}
// represents the visible area of the scrollbar where slider and thumb connector are placed
Item {
id: scrollbarArea
property real thickness: scrollAreaThickness
property real proximityThickness: (isVertical) ? styledItem.width - thickness : styledItem.height - thickness
anchors {
fill: parent
leftMargin: (!isVertical || frontAligned) ? 0 : proximityThickness
rightMargin: (!isVertical || rearAligned) ? 0 : proximityThickness
topMargin: (isVertical || topAligned) ? 0 : proximityThickness
bottomMargin: (isVertical || bottomAligned) ? 0 : proximityThickness
}
}
// The thumb appears whenever the mouse gets close enough to the scrollbar
// and disappears after being for a long enough time far enough of it
MouseArea {
id: proximityArea
anchors {
fill: parent
leftMargin: (!isVertical) ? 0 : (frontAligned ? scrollbarArea.thickness : 0)
rightMargin: (!isVertical) ? 0 : (rearAligned ? scrollbarArea.thickness : 0)
topMargin: (isVertical) ? 0 : (topAligned ? scrollbarArea.thickness : 0)
bottomMargin: (isVertical) ? 0 : (bottomAligned ? scrollbarArea.thickness : 0)
}
propagateComposedEvents: true
enabled: isScrollable && interactive
hoverEnabled: true
onEntered: thumb.show();
onPressed: mouse.accepted = false
onClicked: mouse.accepted = false
onReleased: mouse.accepted = false
}
// The slider's position represents which part of the flickable is visible.
// The slider's size represents the size the visible part relative to the
// total size of the flickable.
Item {
id: scrollCursor
x: (isVertical) ? 0 : ScrollbarUtils.sliderPos(styledItem, 0.0, styledItem.width - scrollCursor.width)
y: (!isVertical) ? 0 : ScrollbarUtils.sliderPos(styledItem, 0.0, styledItem.height - scrollCursor.height)
width: (isVertical) ? scrollbarArea.thickness : ScrollbarUtils.sliderSize(styledItem, 0.0, flickableItem.width)
height: (!isVertical) ? scrollbarArea.thickness : ScrollbarUtils.sliderSize(styledItem, 0.0, flickableItem.height)
function drag() {
ScrollbarUtils.dragAndClamp(styledItem, scrollCursor, contentSize, pageSize);
}
}
Rectangle {
id: slider
color: visuals.sliderColor
anchors {
left: (isVertical) ? scrollbarArea.left : undefined
right: (isVertical) ? scrollbarArea.right : undefined
top: (!isVertical) ? scrollbarArea.top : undefined
bottom: (!isVertical) ? scrollbarArea.bottom : undefined
}
x: (isVertical) ? 0 : ScrollbarUtils.sliderPos(styledItem, 0.0, styledItem.width - slider.width)
y: (!isVertical) ? 0 : ScrollbarUtils.sliderPos(styledItem, 0.0, styledItem.height - slider.height)
width: (isVertical) ? scrollbarArea.thickness : ScrollbarUtils.sliderSize(styledItem, minimumSliderSize, flickableItem.width)
height: (!isVertical) ? scrollbarArea.thickness : ScrollbarUtils.sliderSize(styledItem, minimumSliderSize, flickableItem.height)
radius: visuals.sliderRadius
Behavior on width {
enabled: (!isVertical)
NumberAnimation {
duration: visuals.sliderAnimation.duration
easing: visuals.sliderAnimation.easing
}
}
Behavior on height {
enabled: (isVertical)
NumberAnimation {
duration: visuals.sliderAnimation.duration
easing: visuals.sliderAnimation.easing
}
}
function scroll(amount) {
scrollAnimation.to = ScrollbarUtils.scrollAndClamp(styledItem, amount, 0.0, contentSize - pageSize);
scrollAnimation.restart();
}
}
// The sliderThumbConnector ensures a visual connection between the slider and the thumb
Rectangle {
id: sliderThumbConnector
property real thumbConnectorMargin: visuals.thumbConnectorMargin
property bool isThumbAboveSlider: (isVertical) ? thumb.y < slider.y : thumb.x < slider.x
anchors {
left: (isVertical) ? scrollbarArea.left : (isThumbAboveSlider ? thumb.left : slider.right)
right: (isVertical) ? scrollbarArea.right : (isThumbAboveSlider ? slider.left : thumb.right)
top: (!isVertical) ? scrollbarArea.top : (isThumbAboveSlider ? thumb.top : slider.bottom)
bottom: (!isVertical) ? scrollbarArea.bottom : (isThumbAboveSlider ? slider.top : thumb.bottom)
leftMargin : (isVertical) ? 0 : (isThumbAboveSlider ? thumbConnectorMargin : 0)
rightMargin : (isVertical) ? 0 : (isThumbAboveSlider ? 0 : thumbConnectorMargin)
topMargin : (!isVertical) ? 0 : (isThumbAboveSlider ? thumbConnectorMargin : 0)
bottomMargin : (!isVertical) ? 0 : (isThumbAboveSlider ? 0 : thumbConnectorMargin)
}
color: visuals.thumbConnectorColor
opacity: thumb.shown ? 1.0 : 0.0
Behavior on opacity {
NumberAnimation {
duration: visuals.thumbConnectorFading.duration
easing: visuals.thumbConnectorFading.easing
}
}
}
MouseArea {
id: thumbArea
property point thumbPoint: mapToPoint(thumb.mapFromItem(thumbArea, mouseX, mouseY))
property point thumbTopPoint: mapToPoint(thumbTop.mapFromItem(thumb, thumbPoint.x, thumbPoint.y))
property point thumbBottomPoint: mapToPoint(thumbBottom.mapFromItem(thumb, thumbPoint.x, thumbPoint.y))
property bool inThumbTop: thumbTop.contains(thumbTopPoint)
property bool inThumbBottom: thumbBottom.contains(thumbBottomPoint)
anchors {
fill: scrollbarArea
// set margins adding 2 dp for error area
leftMargin: (!isVertical || frontAligned) ? 0 : units.dp(-2) - thumb.width
rightMargin: (!isVertical || rearAligned) ? 0 : units.dp(-2) - thumb.width
topMargin: (isVertical || topAligned) ? 0 : units.dp(-2) - thumb.height
bottomMargin: (isVertical || bottomAligned) ? 0 : units.dp(-2) - thumb.height
}
enabled: isScrollable && interactive
hoverEnabled: true
onEntered: thumb.show()
onPressed: {
if (isVertical) {
if (mouseY < thumb.y) {
thumb.placeThumbForeUnderMouse(mouse)
} else if (mouseY > (thumb.y + thumb.height)) {
thumb.placeThumbRearUnderMouse(mouse)
}
} else {
if (mouseX < thumb.x) {
thumb.placeThumbForeUnderMouse(mouse)
} else if (mouseX > (thumb.x + thumb.width)) {
thumb.placeThumbRearUnderMouse(mouse)
}
}
}
onClicked: {
if (inThumbBottom)
slider.scroll(pageSize)
else if (inThumbTop)
slider.scroll(-pageSize)
}
// Dragging behaviour
function resetDrag() {
thumbYStart = thumb.y
thumbXStart = thumb.x
dragYStart = drag.target.y
dragXStart = drag.target.x
}
property int thumbYStart
property int dragYStart
property int dragYAmount: thumbArea.drag.target.y - thumbArea.dragYStart
property int thumbXStart
property int dragXStart
property int dragXAmount: thumbArea.drag.target.x - thumbArea.dragXStart
drag {
target: scrollCursor
axis: (isVertical) ? Drag.YAxis : Drag.XAxis
minimumY: 0
maximumY: flickableItem.height - scrollCursor.height
minimumX: 0
maximumX: flickableItem.width - scrollCursor.width
onActiveChanged: {
if (drag.active) resetDrag()
}
}
// update thumb position
onDragYAmountChanged: {
if (drag.active) {
thumb.y = MathUtils.clamp(thumbArea.thumbYStart + thumbArea.dragYAmount, 0, thumb.maximumPos);
}
}
onDragXAmountChanged: {
if (drag.active) {
thumb.x = MathUtils.clamp(thumbArea.thumbXStart + thumbArea.dragXAmount, 0, thumb.maximumPos);
}
}
// drag slider and content to the proper position
onPositionChanged: {
if (pressedButtons == Qt.LeftButton) {
scrollCursor.drag()
}
}
}
Timer {
id: autohideTimer
interval: 1000
repeat: true
onTriggered: if (!proximityArea.containsMouse && !thumbArea.containsMouse && !thumbArea.pressed) thumb.hide()
}
Item {
id: thumb
enabled: interactive
anchors {
left: frontAligned ? slider.left : undefined
right: rearAligned ? slider.right : undefined
top: topAligned ? slider.top : undefined
bottom: bottomAligned ? slider.bottom : undefined
}
width: childrenRect.width
height: childrenRect.height
property bool shown
property int maximumPos: (isVertical) ? styledItem.height - thumb.height : styledItem.width - thumb.width
/* Show the thumb as close as possible to the mouse pointer */
onShownChanged: {
if (shown) {
if (isVertical) {
var mouseY = proximityArea.containsMouse ? proximityArea.mouseY : thumbArea.mouseY;
y = MathUtils.clamp(mouseY - thumb.height / 2, 0, thumb.maximumPos);
} else {
var mouseX = proximityArea.containsMouse ? proximityArea.mouseX : thumbArea.mouseX;
x = MathUtils.clamp(mouseX - thumb.width / 2, 0, thumb.maximumPos);
}
}
}
function show() {
autohideTimer.restart();
shown = true;
}
function hide() {
autohideTimer.stop();
shown = false;
}
function placeThumbForeUnderMouse(mouse) {
var diff = (isVertical) ? mouse.y - height / 4 : mouse.x - width / 4;
positionAnimation.to = MathUtils.clamp(diff, 0, maximumPos);
positionAnimation.restart();
}
function placeThumbRearUnderMouse(mouse) {
var diff = (isVertical) ? mouse.y - height * 3 / 4 : mouse.x - width * 3 / 4;
positionAnimation.to = MathUtils.clamp(diff, 0, maximumPos);
positionAnimation.restart();
}
NumberAnimation {
id: positionAnimation
duration: 100
easing.type: Easing.InOutQuad
target: thumb
property: (isVertical) ? "y" : "x"
}
opacity: shown ? (thumbArea.containsMouse || thumbArea.drag.active ? 1.0 : 0.5) : 0.0
Behavior on opacity {
NumberAnimation {
duration: visuals.thumbFading.duration
easing: visuals.thumbFading.easing
}
}
Flow {
// disable mirroring as thumbs are placed in the same way no matter of RTL or LTR
LayoutMirroring.enabled: false
flow: (isVertical) ? Flow.TopToBottom : Flow.LeftToRight
Image {
id: thumbTop
source: thumbArea.inThumbTop && thumbArea.pressed ? visuals.backwardThumbPressed : visuals.backwardThumbReleased
}
Image {
id: thumbBottom
source: thumbArea.inThumbBottom && thumbArea.pressed ? visuals.forwardThumbPressed : visuals.forwardThumbReleased
}
}
}
}
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