[TIMOB-23546] Windows: Tap-to-focus for Camera

var win = Ti.UI.createWindow({ backgroundColor: 'green', layout: 'vertical' }),
    openButton = Ti.UI.createButton({ title: 'OPEN CAMERA', backgroundColor: 'blue' }),
    imageView = Ti.UI.createImageView({ width: Ti.UI.FILL, height: '70%' });

var overlay = Ti.UI.createView({
    layout: 'vertical',
    height: '20%', width: Ti.UI.FILL,
    bottom: 0
}),
takeButton = Ti.UI.createButton({ title: 'TAKE A PHOTO', backgroundColor: 'red' }),
hideButton = Ti.UI.createButton({ title: 'HIDE PREVIEW', backgroundColor: 'red' });

takeButton.addEventListener('click', function () {
    Ti.Media.takePicture();
});
hideButton.addEventListener('click', function () {
    Ti.Media.hideCamera();
});
overlay.add(takeButton);
overlay.add(hideButton);

openButton.addEventListener('click', function () {
    Ti.Media.showCamera({
        mediaTypes: [Ti.Media.MEDIA_TYPE_PHOTO],
        overlay: overlay,
        success: function (e) {
            Ti.API.info('showCamera() success');
            imageView.image = e.media;
        },
        error: function (e) {
            alert('showCamera() error: ' + JSON.stringify(e));
        }
    });
});

win.add(openButton);
win.add(imageView);
win.open();