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brmbar v3 BarScrollBar: New widget

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Petr Baudis 2012-09-24 03:54:23 +02:00
parent 9afd1788d0
commit 99cbefbb21
1 changed files with 40 additions and 0 deletions
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brmbar3/brmbar-gui-qt4/BarScrollBar.qml Normal file
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// Based on https://projects.forum.nokia.com/qmluiexamples/browser/qml/qmluiexamples/Scrollable/ScrollBar.qml
import Qt 4.7
Rectangle {
// The flickable to which the scrollbar is attached to, must be set
property variant flickableItem
// True for vertical ScrollBar, false for horizontal
property bool vertical: true
property int scrollbarWidth: 20
property variant color: "white"
property variant baseOpacityOff: 0.4
property variant baseOpacityOn: 0.9
radius: vertical ? width/2 : height/2
function sbOpacity()
{
if (vertical ? (height >= parent.height) : (width >= parent.width)) {
return 0;
} else {
return (flickableItem.flicking || flickableItem.moving) ? baseOpacityOn : baseOpacityOff;
}
}
// Scrollbar appears automatically when content is bigger than the Flickable
opacity: sbOpacity()
// Calculate width/height and position based on the content size and position of
// the Flickable
width: vertical ? scrollbarWidth : flickableItem.visibleArea.widthRatio * parent.width
height: vertical ? flickableItem.visibleArea.heightRatio * parent.height : scrollbarWidth
x: vertical ? parent.width - width : flickableItem.visibleArea.xPosition * parent.width
y: vertical ? flickableItem.visibleArea.yPosition * parent.height : parent.height - height
// Animate scrollbar appearing/disappearing
Behavior on opacity { NumberAnimation { duration: 200 }}
}