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import QtQuick 1.0
Item {
id: select
property real sat: 1.0
property real val: 1.0
width: parent.width
height: parent.height
Binding {
target: handle; property: "x"
value: select.sat * select.width
}
Binding {
target: select; property: "sat"
value: handle.x/width
}
Binding {
target: handle; property: "y"
value: (1.0 - select.val) * select.height
}
Binding {
target: select; property: "val"
value: 1.0 - handle.y/height
}
Item {
id: handle
width: 20
height: width
x: 0.0; y: 0.0
Rectangle {
x: -width/2
y: x
width: parent.width-2
height: width
radius: width/2
border.color: "white"
color: "transparent"
}
Rectangle {
x: -width/2
y: x
width: parent.width
height: width
radius: width/2
border.width: 2
border.color: "black"
color: "transparent"
}
}
MouseArea {
anchors.fill: parent
function mouseEvent(mouse) {
if (mouse.buttons & Qt.LeftButton) {
handle.x = Math.max(0, Math.min(height, mouse.x))
handle.y = Math.max(0, Math.min(height, mouse.y))
}
}
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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