public void setSize(int width, int height) {
rootElement.getStyle().setWidth(width, Unit.PX);
rootElement.getStyle().setHeight(height, Unit.PX);
canvas.setWidth(scale().scaledCeil(width));
canvas.setHeight(scale().scaledCeil(height));
canvas.getStyle().setWidth(width, Style.Unit.PX);
canvas.getStyle().setHeight(height, Style.Unit.PX);
viewportChanged(scale(), canvas.getWidth(), canvas.getHeight());
}
