@Override
public void onGlobalLayout() {
ImageView imageView = getImageView();
if (null != imageView) {
if (mZoomEnabled) {
final int top = imageView.getTop();
final int right = imageView.getRight();
final int bottom = imageView.getBottom();
final int left = imageView.getLeft();
/**
* We need to check whether the ImageView's bounds have changed. This would be easier if we
* targeted API 11+ as we could just use View.OnLayoutChangeListener. Instead we have to
* replicate the work, keeping track of the ImageView's bounds and then checking if the
* values change.
*/
if (top != mIvTop || bottom != mIvBottom || left != mIvLeft || right != mIvRight) {
// Update our base matrix, as the bounds have changed
updateBaseMatrix(imageView.getDrawable());
// Update values as something has changed
mIvTop = top;
mIvRight = right;
mIvBottom = bottom;
mIvLeft = left;
}
} else {
updateBaseMatrix(imageView.getDrawable());
}
}
}
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();
}
}
}
