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import QtQuick 1.0
Item {
id: slider
width: parent.width
height: parent.height
property real value: 0.0
property bool inverted: false
property bool horizontal: false
signal changed;
Binding {
target: slider; property: "value"
value: {
var res;
var pos = horizontal ? handle.x : handle.y;
var delta = horizontal ? width-handle.width : height-handle.height;
res = pos/delta;
return inverted ? 1-res : res
}
}
Binding {
target: handle; property: "y"
value: {
var res = inverted ? 1 - slider.value : slider.value
if (!horizontal) return res*(height-handle.height);
}
}
Binding {
target: handle; property: "x"
value: {
var res = inverted ? 1 - slider.value : slider.value
if (horizontal) return res*(width-handle.width);
}
}
Rectangle {
id: handle
width: 8 + (horizontal ? 0 : parent.width)
height: 8 + (!horizontal ? 0 : parent.height)
anchors.horizontalCenter: horizontal ? undefined : parent.horizontalCenter
anchors.verticalCenter: !horizontal ? undefined : parent.verticalCenter
radius: 2
Behavior on opacity {
NumberAnimation { easing.type: Easing.InOutQuad; duration: 80 }
}
gradient: Gradient {
GradientStop { position: 0.0; color: "#FFFFFF" }
GradientStop { position: 1.0; color: "#FFFFFF" }
}
border.width: 1
border.color: "darkgray"
onXChanged: slider.changed()
onYChanged: slider.changed()
}
MouseArea {
id: mouseArea
anchors.fill: parent
function mouseEvent(mouse) {
if (mouse.buttons & Qt.LeftButton) {
if (horizontal)
handle.x = Math.max(0, Math.min(width-handle.width, mouse.x-handle.width/2))
else
handle.y = Math.max(0, Math.min(height-handle.height, mouse.y-handle.height/2));
}
}
onPressed: mouseEvent(mouse);
onPositionChanged: mouseEvent(mouse);
hoverEnabled: true
onEntered: handle.opacity = 0.5;
onExited: { if (!pressed) handle.opacity = 1.0 }
onReleased: { if (!containsMouse) handle.opacity = 1.0 }
}
}
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