[rotation] apply rotation to LockScreen to always keep it in native orientation

src/qml/GlacierRotation.qml

@@ -35,10 +35,24 @@ import org.nemomobile.lipstick 0.1
 
 Item {
 
+    property int _nativeRotation: Screen.angleBetween(nativeOrientation, Screen.primaryOrientation)
+    property bool _nativeIsPortrait: ((_nativeRotation === 0) || (_nativeRotation === 180))
+
     property Item rotationParent
+    property variant unrotatedItems: []
+
+    function rotationDiff(a, b) {
+        var r =_nativeRotation - rotationParent.rotation
+        if (r < 360)
+            r += 360
+        return r
+    }
 
     function rotateRotationParent(o) {
         rotateObject(rotationParent, o)
+        for(var i = 0; i < unrotatedItems.length; i++) {
+            rotateObjectToAngle(unrotatedItems[i], rotationDiff(_nativeRotation, rotationParent.rotation))
+        }
     }
 
     function rotateObject(obj, o) {
@@ -50,7 +64,16 @@ Item {
     function rotateObjectToAngle(obj, r) {
         obj.width = Screen.width; obj.height = Screen.height; obj.x = 0; obj.y = 0
         obj.rotation = r
-        var res = obj.mapToItem(rotationParent.parent, 0, 0, obj.width, obj.height)
+        var res = obj.mapToItem((obj === rotationParent) ?  rotationParent.parent : rotationParent, 0, 0, obj.width, obj.height)
+        if (obj !== rotationParent) {
+            if (_nativeIsPortrait) {
+                var i = res.x
+                res.x = res.y
+                res.y = i
+            }
+            var res2 = rotationParent.mapToItem(rotationParent.parent, 0, 0, res.width, res.height)
+            res.width = res2.width; res.height = res2.height
+        }
         obj.x = res.x; obj.y = res.y; obj.width = res.width; obj.height = res.height
     }
 }

src/qml/MainScreen.qml

@@ -73,6 +73,7 @@ Page {
     GlacierRotation {
         id: glacierRotation
         rotationParent: desktop.parent
+        unrotatedItems: [lockScreen]
     }
 
     orientation: Lipstick.compositor.screenOrientation
@@ -94,13 +95,10 @@ Page {
     Connections {
         target: LipstickSettings
         onLockscreenVisibleChanged: {
-            if (lockscreenVisible()) {
-                glacierRotation.rotateRotationParent(nativeOrientation)
-            } else {
+            if (!lockscreenVisible())
                 glacierRotation.rotateRotationParent(desktop.orientation)
         }
     }
-    }
 
     function lockscreenVisible() {
         return LipstickSettings.lockscreenVisible === true

src/qml/compositor.qml

@@ -131,6 +131,8 @@ Compositor {
 
         property real swipeThreshold: 0.15
         property real lockThreshold: 0.25
+        property int lockscreenX
+        property int lockscreenY
 
         onGestureStarted: {
             swipeAnimation.stop()
@@ -139,6 +141,8 @@ Compositor {
             if (root.appActive) {
                 state = "swipe"
             } else if (root.homeActive) {
+                lockscreenX = Desktop.instance.lockscreen.x
+                lockscreenY = Desktop.instance.lockscreen.y
                 state = "lock"
             }
         }
@@ -199,14 +203,22 @@ Compositor {
                 }
                 PropertyChanges {
                     target: Desktop.instance.lockscreen
-                    x: gestureArea.horizontal ? (Desktop.instance.lockscreenVisible()?(gestureArea.value):
+                    x: gestureArea.lockscreenX + ((gestureArea.horizontal) ? (Desktop.instance.lockscreenVisible()?(gestureArea.value) :
                                                                                        (gestureArea.gesture == "right" ?
-                                                                                       -Desktop.instance.lockscreen.width+Math.abs(gestureArea.value) :
-                                                                                       Desktop.instance.lockscreen.width+gestureArea.value) ) : 0
-                    y: gestureArea.horizontal ? 0 : (Desktop.instance.lockscreenVisible()?(gestureArea.value):
+                                                                                       ((Desktop.instance.lockscreen.width === topmostWindow.width) ?
+                                                                                            -Desktop.instance.lockscreen.width :
+                                                                                            -Desktop.instance.lockscreen.height)+Math.abs(gestureArea.value) :
+                                                                                       ((Desktop.instance.lockscreen.width === topmostWindow.width) ?
+                                                                                            Desktop.instance.lockscreen.width :
+                                                                                            Desktop.instance.lockscreen.height)+gestureArea.value) ) : 0 )
+                    y: gestureArea.lockscreenY + ((gestureArea.horizontal) ? 0 : (Desktop.instance.lockscreenVisible()?(gestureArea.value) :
                                                                                        (gestureArea.gesture == "down" ?
-                                                                                       -Desktop.instance.lockscreen.height+Math.abs(gestureArea.value) :
-                                                                                       Desktop.instance.lockscreen.height+gestureArea.value) )
+                                                                                       ((Desktop.instance.lockscreen.width === topmostWindow.width) ?
+                                                                                            -Desktop.instance.lockscreen.height :
+                                                                                            -Desktop.instance.lockscreen.width)+Math.abs(gestureArea.value) :
+                                                                                       ((Desktop.instance.lockscreen.width === topmostWindow.width) ?
+                                                                                            Desktop.instance.lockscreen.height :
+                                                                                            Desktop.instance.lockscreen.width)+gestureArea.value) ) )
                 }
             }