public void setTileSource(TileSource source, Runnable isReadyCallback) {
super.setTileSource(source, isReadyCallback);
mCenterX = mRenderer.centerX;
mCenterY = mRenderer.centerY;
mRotateMatrix.reset();
mRotateMatrix.setRotate(mRenderer.rotation);
mInverseRotateMatrix.reset();
mInverseRotateMatrix.setRotate(-mRenderer.rotation);
updateMinScale(getWidth(), getHeight(), source, true);
}
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
updateMinScale(w, h, mRenderer.source, false);
}