I want to be able to click-and-drag. For example, in this row
1 2 |x x |
if I left click the second cell and drag right it should mark all the blank cells black.
Similarly in the inverted case, if I have marked cells and right-click-and-drag next to them it should mark the empty spots I cross over with Xs.
Important: this doesn't change the state of any cell that wasn't blank to start out. You should have to click on a marked cell to clear it (or right click to replace it with an X). And similarly to above, if you drag, it should change only the cells you touch that match the starting state of your original cell to the new state.
Similarly in the inverted case, if I have marked cells and right-click-and-drag next to them it should mark the empty spots I cross over with Xs.
Important: this doesn't change the state of any cell that wasn't blank to start out. You should have to click on a marked cell to clear it (or right click to replace it with an X). And similarly to above, if you drag, it should change only the cells you touch that match the starting state of your original cell to the new state.