As means for further individual exploration the CCBPGraph class could
be extended by adding (for example) the following features. (There is always a
balance to be had between adding a lot of feature and still keeping the interface
simple enough to be manageable)
Add customization for the titles of the two axis
Make it possible to adjust the margin color
Make the number of background color bands user adjustable
Add data manipulation so that the input data is specified as a number
of historic values for each task. The latest value should be displayed
as a mark and the last n values (user
selectable window size) shown as a trailing path behind the mark to see
how it has moved as shown in for example Figure 35.4. Complete buffer penetration example with history trace ( ccbp_ex1.php)
Make use of the MGraph class to make it possible to
create multiple CCBP charts in the same image. In order to identify
which graph is affected by commands ti would be possible to just add a
new argument giving the index to all the existing methods. However, a
cleaner implementation would probably use the concept of a "current"
graph which receives all the method calls. Implementing it that way
would allow us to keep the existing signatures for all existing methods.
In order to position the graphs it is probably a good idea to make use
of some easy way for the user just to select how many rows should be
used and many charts should be displayed on each row (to avoid the end
user from having to position the graphs pixel by pixel)