SnapdragonCamera: Stop panorama capture when move to opposite direction

In panorama capture mode, when user moved to the opposite from the
original direction, stop the capture and save current picture.

Change-Id: I716a08f2fc497301fb8a6c6a124211b855cd9a77
CRs-Fixed: 801022

2 files changed, 23 insertions, 0 deletions

diff --git a/src/com/android/camera/PanoProgressBar.java b/src/com/android/camera/PanoProgressBar.java
index 2a0589066..d20878a84 100644
--- a/src/com/android/camera/PanoProgressBar.java
+++ b/src/com/android/camera/PanoProgressBar.java
@@ -44,6 +44,8 @@ class PanoProgressBar extends ImageView {
     private RectF mDrawBounds;
     private OnDirectionChangeListener mListener = null;
 
+    private int mOldProgress = 0;
+
     public interface OnDirectionChangeListener {
         public void onDirectionChange(int direction);
     }
@@ -137,6 +139,12 @@ class PanoProgressBar extends ImageView {
                 setRightIncreasing(false);
             }
         }
+        // When user move to the opposite direction more than 10 degrees,
+        // change the direction and stop the capture progress in PanoramaModule.
+        if (Math.abs(mOldProgress) - Math.abs(progress) > 10) {
+            mListener.onDirectionChange(mDirection/2 + 1);
+            return;
+        }
         // mDirection might be modified by setRightIncreasing() above. Need to check again.
         if (mDirection != DIRECTION_NONE) {
             mProgress = progress * mWidth / mMaxProgress + mProgressOffset;
@@ -152,11 +160,15 @@ class PanoProgressBar extends ImageView {
             }
             invalidate();
         }
+        if (Math.abs(mOldProgress) < Math.abs(progress)) {
+            mOldProgress = progress;
+        }
     }
 
     public void reset() {
         mProgress = 0;
         mProgressOffset = 0;
+        mOldProgress = 0;
         setDirection(DIRECTION_NONE);
         invalidate();
     }
diff --git a/src/com/android/camera/WideAnglePanoramaModule.java b/src/com/android/camera/WideAnglePanoramaModule.java
index e7025a1a7..21f55f36b 100644
--- a/src/com/android/camera/WideAnglePanoramaModule.java
+++ b/src/com/android/camera/WideAnglePanoramaModule.java
@@ -153,6 +153,8 @@ public class WideAnglePanoramaModule
     private boolean mPreviewFocused = true;
     private boolean mPreviewLayoutChanged = false;
 
+    private boolean mDirectionChanged = false;
+
     @Override
     public void onPreviewUIReady() {
         configMosaicPreview();
@@ -225,9 +227,16 @@ public class WideAnglePanoramaModule
                 new PanoProgressBar.OnDirectionChangeListener() {
                     @Override
                     public void onDirectionChange(int direction) {
+                        if (mDirectionChanged) {
+                            stopCapture(false);
+                            return;
+                        }
                         if (mCaptureState == CAPTURE_STATE_MOSAIC) {
                             mUI.showDirectionIndicators(direction);
                         }
+                        if (direction != PanoProgressBar.DIRECTION_NONE) {
+                            mDirectionChanged = true;
+                        }
                     }
                 });
 
@@ -583,6 +592,7 @@ public class WideAnglePanoramaModule
     }
 
     private void stopCapture(boolean aborted) {
+        mDirectionChanged = false;
         mCaptureState = CAPTURE_STATE_VIEWFINDER;
         mUI.onStopCapture();
         Parameters parameters = mCameraDevice.getParameters();
@@ -758,6 +768,7 @@ public class WideAnglePanoramaModule
     // This function will be called upon the first camera frame is available.
     private void reset() {
         mCaptureState = CAPTURE_STATE_VIEWFINDER;
+        mDirectionChanged = false;
 
         mOrientationLocked = false;
         mUI.setOrientation(mDeviceOrientation, true);