TransformGestureDetector is now ScaleGestureDetector - scope reduced.
N1 screen can't reliably handle translation and scaling at the same time.
diff --git a/tests/TransformTest/src/com/google/android/test/transform/TransformTestActivity.java b/tests/TransformTest/src/com/google/android/test/transform/TransformTestActivity.java
index 52286d1..31ee120 100644
--- a/tests/TransformTest/src/com/google/android/test/transform/TransformTestActivity.java
+++ b/tests/TransformTest/src/com/google/android/test/transform/TransformTestActivity.java
@@ -24,9 +24,8 @@
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
-import android.view.LayoutInflater;
import android.view.MotionEvent;
-import android.view.TransformGestureDetector;
+import android.view.ScaleGestureDetector;
import android.view.View;
import android.widget.LinearLayout;
@@ -48,9 +47,6 @@
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
-
- final LayoutInflater li = (LayoutInflater)getSystemService(
- LAYOUT_INFLATER_SERVICE);
this.setTitle(R.string.act_title);
LinearLayout root = new LinearLayout(this);
@@ -71,15 +67,19 @@
private float mPosY;
private float mScale = 1.f;
private Matrix mMatrix;
- private TransformGestureDetector mDetector;
+ private ScaleGestureDetector mDetector;
- private class Listener implements TransformGestureDetector.OnTransformGestureListener {
+ private float mLastX;
+ private float mLastY;
+
+ private class Listener implements ScaleGestureDetector.OnScaleGestureListener {
- public boolean onTransform(TransformGestureDetector detector) {
- Log.d("ttest", "Translation: (" + detector.getTranslateX() +
- ", " + detector.getTranslateY() + ")");
+ public boolean onScale(ScaleGestureDetector detector) {
float scale = detector.getScaleFactor();
+
Log.d("ttest", "Scale: " + scale);
+
+ // Limit the scale so our object doesn't get too big or disappear
if (mScale * scale > 0.1f) {
if (mScale * scale < 10.f) {
mScale *= scale;
@@ -89,16 +89,13 @@
} else {
mScale = 0.1f;
}
-
- mPosX += detector.getTranslateX();
- mPosY += detector.getTranslateY();
Log.d("ttest", "mScale: " + mScale + " mPos: (" + mPosX + ", " + mPosY + ")");
float sizeX = mDrawable.getIntrinsicWidth()/2;
float sizeY = mDrawable.getIntrinsicHeight()/2;
- float centerX = detector.getCenterX();
- float centerY = detector.getCenterY();
+ float centerX = detector.getFocusX();
+ float centerY = detector.getFocusY();
float diffX = centerX - mPosX;
float diffY = centerY - mPosY;
diffX = diffX*scale - diffX;
@@ -115,24 +112,20 @@
return true;
}
- public boolean onTransformBegin(TransformGestureDetector detector) {
+ public boolean onScaleBegin(ScaleGestureDetector detector) {
return true;
}
- public boolean onTransformEnd(TransformGestureDetector detector) {
- return true;
- }
-
- public boolean onTransformFling(TransformGestureDetector detector) {
- return false;
- }
-
+ public void onScaleEnd(ScaleGestureDetector detector) {
+ mLastX = detector.getFocusX();
+ mLastY = detector.getFocusY();
+ }
}
public TransformView(Context context) {
super(context);
mMatrix = new Matrix();
- mDetector = new TransformGestureDetector(context, new Listener());
+ mDetector = new ScaleGestureDetector(context, new Listener());
DisplayMetrics metrics = context.getResources().getDisplayMetrics();
mPosX = metrics.widthPixels/2;
mPosY = metrics.heightPixels/2;
@@ -151,12 +144,37 @@
@Override
public boolean onTouchEvent(MotionEvent event) {
- boolean handled = mDetector.onTouchEvent(event);
+ mDetector.onTouchEvent(event);
- int pointerCount = event.getPointerCount();
- Log.d("ttest", "pointerCount: " + pointerCount);
+ // Handling single finger pan
+ if (!mDetector.isInProgress()) {
+ switch (event.getAction()) {
+ case MotionEvent.ACTION_DOWN:
+ mLastX = event.getX();
+ mLastY = event.getY();
+ break;
+
+ case MotionEvent.ACTION_MOVE:
+ final float x = event.getX();
+ final float y = event.getY();
+ mPosX += x - mLastX;
+ mPosY += y - mLastY;
+ mLastX = x;
+ mLastY = y;
+
+ float sizeX = mDrawable.getIntrinsicWidth()/2;
+ float sizeY = mDrawable.getIntrinsicHeight()/2;
+
+ mMatrix.reset();
+ mMatrix.postTranslate(-sizeX, -sizeY);
+ mMatrix.postScale(mScale, mScale);
+ mMatrix.postTranslate(mPosX, mPosY);
+ invalidate();
+ break;
+ }
+ }
- return handled;
+ return true;
}
@Override