Locked Brush Size For Texture Painting

brush size lock, i think since long blender lacked the feature to have checkbox for locked brush size for texture painting. its very difficult to keep adjusting the brush size after every zoom and generally the option is much needed while painting with precision. This feature does exist in most of the external texture painting software's. it would be awesome if it existed in blender. and i believe it wont be much difficult to implement this setting.