Camera: Change volume hard key button to zoom function

Author: Su Liu <suliu@codeaurora.org>
Date:   Wed Sep 4 18:16:50 2013 +0800

    Camera: Change volume hard key button to zoom function

    Able to capture image through volume hard key
    button in camera application, change the function
    to zoom function.

    Change-Id: Iab9fc2492b2e2ff89cd58c21bac2f147f47b77e2

Author: jt1134 <jt1134@gmail.com>
Date:   Sat Jan 4 20:52:27 2014 -0600

    Camera2: implement volume key zoom in video mode

    Change-Id: I140e8cfb3e39700f60e40c35b38e92c83a3c26de

Author: Lars Greiss <kufikugel@googlemail.com>
Date:   Sun Feb 2 03:09:22 2014 +0100

    Camera2: tweak volume key zoom and cleanup

    - cleanup unused code
    - cleanup codestyle
    - add more zoom steps for smother zooming
    - show zoom circle indicator during zoom

    Change-Id: I5214fc2620a0c5167bfdc8e85f7115966c3b8bcf

Change-Id: I99dd2fffc92985156eece67c19435a71d14cd928

1 files changed, 7 insertions, 0 deletions

diff --git a/src/com/android/camera/PhotoUI.java b/src/com/android/camera/PhotoUI.java
index 9f6cc9833..bd5efbf0e 100755
--- a/src/com/android/camera/PhotoUI.java
+++ b/src/com/android/camera/PhotoUI.java
@@ -1318,6 +1318,13 @@ public class PhotoUI implements PieListener,
         mFaceView.setFaces(faces);
     }
 
+    public boolean onScaleStepResize(boolean direction) {
+        if (mGestures != null) {
+            return mGestures.onScaleStepResize(direction);
+        }
+        return false;
+    }
+
     @Override
     public void onDisplayChanged() {
         Log.d(TAG, "Device flip detected.");