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

1 files changed, 16 insertions, 0 deletions

diff --git a/src/com/android/camera/PreviewGestures.java b/src/com/android/camera/PreviewGestures.java
index 70a094c28..4a1eae083 100644
--- a/src/com/android/camera/PreviewGestures.java
+++ b/src/com/android/camera/PreviewGestures.java
@@ -20,6 +20,7 @@ import android.view.GestureDetector;
 import android.view.MotionEvent;
 import android.view.ScaleGestureDetector;
 import android.view.View;
+import android.graphics.Canvas;
 
 import com.android.camera.PhotoMenu;
 import com.android.camera.VideoMenu;
@@ -290,5 +291,20 @@ public class PreviewGestures
     public void onScaleEnd(ScaleGestureDetector detector) {
         mZoom.onScaleEnd(detector);
     }
+
+    public boolean onScaleStepResize(boolean direction)
+    {
+        if(mZoom != null){
+            return mZoom.onScaleStepResize(direction);
+        }
+        return false;
+    }
+
+    public void onScaleChangeDraw(Canvas canvas)
+    {
+        if(mZoom != null){
+            mZoom.onScaleChangeDraw(canvas);
+        }
+    }
 }