VideoOutput {
id: viewFinder

property bool shouldBeCentered: device.isLandscape
property real anchoredY: viewFinderGeometry.y * (device.isInverted ? +1 : -1)
property real anchoredX: viewFinderGeometry.x * (device.isInverted ? +1 : -1)

x: viewFinder.shouldBeCentered ? 0 : viewFinder.anchoredX
y: viewFinder.shouldBeCentered || device.naturalOrientation === "landscape" ?
0 : viewFinder.anchoredY
width: parent.width
height: parent.height
source: camera

/* This rotation need to be applied since the camera hardware in the
Galaxy Nexus phone is mounted at an angle inside the device, so the video
feed is rotated too.
FIXME: This should come from a system configuration option so that we
don't have to have a different codebase for each different device we want
to run on */
orientation: device.naturalOrientation === "portrait" ? -90 : 0

/* Convenience item tracking the real position and size of the real video feed.
Having this helps since these values depend on a lot of rules:
- the feed is automatically scaled to fit the viewfinder
- the viewfinder might apply a rotation to the feed, depending on device orientation
- the resolution and aspect ratio of the feed changes depending on the active camera
The item is also separated in a component so it can be unit tested.
*/