Merge lp:~fboucault/camera-app/more_hack_for_sensor_orientation into lp:camera-app

[Florian Boucault]

Only use Screen.primaryOrientation returned at startup which is more indicative of the native orientation of the device.
Fixes case where viewfinder rotated when changing window size.

[PS Jenkins bot (ps-jenkins)]

FAILED: Continuous integration, rev:590
http://jenkins.qa.ubuntu.com/job/camera-app-ci/447/
Executed test runs:
    FAILURE: http://jenkins.qa.ubuntu.com/job/camera-app-vivid-amd64-ci/143/console
    FAILURE: http://jenkins.qa.ubuntu.com/job/camera-app-vivid-armhf-ci/143/console
    FAILURE: http://jenkins.qa.ubuntu.com/job/camera-app-vivid-i386-ci/143/console
    UNSTABLE: http://jenkins.qa.ubuntu.com/job/generic-click-autopilot-vivid-touch/292
    UNSTABLE: http://jenkins.qa.ubuntu.com/job/generic-click-autopilot-runner-mako/949
    SUCCESS: http://jenkins.qa.ubuntu.com/job/generic-click-builder-vivid-armhf/777
    SUCCESS: http://s-jenkins.ubuntu-ci:8080/job/touch-flash-device/24861

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review: Needs Fixing (continuous-integration)

=== modified file 'ViewFinderView.qml'
--- ViewFinderView.qml	2015-10-22 12:21:14 +0000
+++ ViewFinderView.qml	2015-11-03 14:14:33 +0000
@@ -222,8 +222,18 @@
                    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: Screen.primaryOrientation === Qt.PortraitOrientation  ? -90 : 0
+                   to run on. Android has that information and QML has an API to reflect it:
+                   the camera.orientation property. Unfortunately it is not hooked up yet.
+
+                   Ref.: http://doc.qt.io/qt-5/qml-qtmultimedia-camera.html#orientation-prop
+                         http://doc.qt.io/qt-5/qcamerainfocontrol.html#cameraOrientation
+                         http://developer.android.com/reference/android/hardware/Camera.CameraInfo.html#orientation
+            */
+            Component.onCompleted: {
+                // Set orientation only at startup because later on Screen.primaryOrientation
+                // may change.
+                orientation = Screen.primaryOrientation === Qt.PortraitOrientation  ? -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: