Method updateDirtyRectImpl

src/tools/rotate_pattern_tool.cpp:221–231

int RotatePatternTool::updateDirtyRectImpl(QRectF& rect)
{
	if (isDragging())
	{
		rectIncludeSafe(rect, click_pos_map);
		rectIncludeSafe(rect, constrained_pos_map);
		angle_helper->includeDirtyRect(rect);
	}
	
	return rect.isValid() ? angle_helper->getDisplayRadius() : -1;
}