public void update() {
ImageView imageView = getImageView();
if (null != imageView) {
if (mZoomEnabled) {
// Make sure we using MATRIX Scale Type
setImageViewScaleTypeMatrix(imageView);
// Update the base matrix using the current drawable
updateBaseMatrix(imageView.getDrawable());
} else {
// Reset the Matrix...
resetMatrix();
}
}
}
@SuppressLint("NewApi")
public PhotoViewAttacher(ImageView imageView) {
mImageView = imageView;
imageView.setDrawingCacheEnabled(true);
imageView.setOnTouchListener(this);
ViewTreeObserver observer = imageView.getViewTreeObserver();
if (null != observer) observer.addOnGlobalLayoutListener(this);
// Make sure we using MATRIX Scale Type
setImageViewScaleTypeMatrix(imageView);
if (imageView.isInEditMode()) {
return;
}
// Create Gesture Detectors...
mScaleDragDetector = VersionedGestureDetector.newInstance(imageView.getContext(), this);
mGestureDetector =
new GestureDetector(
imageView.getContext(),
new GestureDetector.SimpleOnGestureListener() {
// forward long click listener
@Override
public void onLongPress(MotionEvent e) {
if (null != mLongClickListener) {
mLongClickListener.onLongClick(getImageView());
}
}
});
mGestureDetector.setOnDoubleTapListener(new DefaultOnDoubleTapListener(this));
// Finally, update the UI so that we're zoomable
setZoomable(true);
}