From d1975270b68e8b2513bdcf78b4451ddcbd3964fd Mon Sep 17 00:00:00 2001
From: Ahbong Chang <cwahbong@google.com>
Date: Tue, 7 Aug 2012 16:46:09 +0800
Subject: Move motion event related methods to class MotionEventHelper.

Bug: 6943189
Change-Id: I9084cc8ebb501a5b772ed4e00bd64a3b2e8bafb3
---
 src/com/android/gallery3d/ui/GLRootView.java | 96 +---------------------------
 1 file changed, 2 insertions(+), 94 deletions(-)

(limited to 'src/com/android/gallery3d/ui')

diff --git a/src/com/android/gallery3d/ui/GLRootView.java b/src/com/android/gallery3d/ui/GLRootView.java
index 7f717b7b7..d3969349a 100644
--- a/src/com/android/gallery3d/ui/GLRootView.java
+++ b/src/com/android/gallery3d/ui/GLRootView.java
@@ -25,9 +25,7 @@ import android.os.Build;
 import android.os.Process;
 import android.os.SystemClock;
 import android.util.AttributeSet;
-import android.util.FloatMath;
 import android.view.MotionEvent;
-import android.view.MotionEvent.PointerCoords;
 import android.view.SurfaceHolder;
 import android.view.View;
 
@@ -36,6 +34,7 @@ import com.android.gallery3d.anim.CanvasAnimation;
 import com.android.gallery3d.common.ApiHelper;
 import com.android.gallery3d.common.Utils;
 import com.android.gallery3d.util.GalleryUtils;
+import com.android.gallery3d.util.MotionEventHelper;
 import com.android.gallery3d.util.Profile;
 
 import java.util.ArrayDeque;
@@ -432,7 +431,7 @@ public class GLRootView extends GLSurfaceView
         }
 
         if (mCompensation != 0) {
-            event = transformEvent(event, mCompensationMatrix);
+            event = MotionEventHelper.transformEvent(event, mCompensationMatrix);
         }
 
         mRenderLock.lock();
@@ -449,97 +448,6 @@ public class GLRootView extends GLSurfaceView
         }
     }
 
-    private static MotionEvent transformEvent(MotionEvent e, Matrix m) {
-        // We try to use the new transform method if possible because it uses
-        // less memory.
-        if (ApiHelper.HAS_MOTION_EVENT_TRANSFORM) {
-            return transformEventNew(e, m);
-        } else {
-            return transformEventOld(e, m);
-        }
-    }
-
-    @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB)
-    private static MotionEvent transformEventNew(MotionEvent e, Matrix m) {
-        e.transform(m);
-        return e;
-    }
-
-    // This is copied from Input.cpp in the android framework.
-    private static MotionEvent transformEventOld(MotionEvent e, Matrix m) {
-        long downTime = e.getDownTime();
-        long eventTime = e.getEventTime();
-        int action = e.getAction();
-        int pointerCount = e.getPointerCount();
-        int[] pointerIds = getPointerIds(e);
-        PointerCoords[] pointerCoords = getPointerCoords(e);
-        int metaState = e.getMetaState();
-        float xPrecision = e.getXPrecision();
-        float yPrecision = e.getYPrecision();
-        int deviceId = e.getDeviceId();
-        int edgeFlags = e.getEdgeFlags();
-        int source = e.getSource();
-        int flags = e.getFlags();
-
-        // Copy the x and y coordinates into an array, map them, and copy back.
-        float[] xy = new float[pointerCoords.length * 2];
-        for (int i = 0; i < pointerCount;i++) {
-            xy[2 * i] = pointerCoords[i].x;
-            xy[2 * i + 1] = pointerCoords[i].y;
-        }
-        m.mapPoints(xy);
-        for (int i = 0; i < pointerCount;i++) {
-            pointerCoords[i].x = xy[2 * i];
-            pointerCoords[i].y = xy[2 * i + 1];
-            pointerCoords[i].orientation = transformAngle(
-                m, pointerCoords[i].orientation);
-        }
-
-        MotionEvent n = MotionEvent.obtain(downTime, eventTime, action,
-                pointerCount, pointerIds, pointerCoords, metaState, xPrecision,
-                yPrecision, deviceId, edgeFlags, source, flags);
-
-        return n;
-    }
-
-    private static int[] getPointerIds(MotionEvent e) {
-        int n = e.getPointerCount();
-        int[] r = new int[n];
-        for (int i = 0; i < n; i++) {
-            r[i] = e.getPointerId(i);
-        }
-        return r;
-    }
-
-    private static PointerCoords[] getPointerCoords(MotionEvent e) {
-        int n = e.getPointerCount();
-        PointerCoords[] r = new PointerCoords[n];
-        for (int i = 0; i < n; i++) {
-            r[i] = new PointerCoords();
-            e.getPointerCoords(i, r[i]);
-        }
-        return r;
-    }
-
-    private static float transformAngle(Matrix m, float angleRadians) {
-        // Construct and transform a vector oriented at the specified clockwise
-        // angle from vertical.  Coordinate system: down is increasing Y, right is
-        // increasing X.
-        float[] v = new float[2];
-        v[0] = FloatMath.sin(angleRadians);
-        v[1] = -FloatMath.cos(angleRadians);
-        m.mapVectors(v);
-
-        // Derive the transformed vector's clockwise angle from vertical.
-        float result = (float) Math.atan2(v[0], -v[1]);
-        if (result < -Math.PI / 2) {
-            result += Math.PI;
-        } else if (result > Math.PI / 2) {
-            result -= Math.PI;
-        }
-        return result;
-    }
-
     private class IdleRunner implements Runnable {
         // true if the idle runner is in the queue
         private boolean mActive = false;
-- 
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