this ensures that "all back" dialog boxes that are fake
are also defaced (as opposed to just drawing black, which
would not deface a "fake" dialog box).
right character gets cut off, but it's because the cursor is
the top left of the last character. add one character height plus
margin to the shortening, because the margin itself could be 0
in many case.
Mark the private fields in a `MemoryRange` struct as being private. This
allows us to perform operations on the memory range armed with the
knowledge that the entire range is valid and unaliased.
Signed-off-by: Sean Cross <sean@xobs.io>
this prevents less trusted processes from connecting to servers
after the kernel initializations are done.
this works so long as we don't have disconnects from the kernel
servers. In order to support disconnects we will also need a
way to re-enumerate the SID to guarantee that we don't have a re-use
problem. But for now, the kernel is not designed with any practical
disconnect mechanism; there is no code that calls the Quit mechanism
on any server.
- inverted text indicates a trusted message. policy is enforced in the GAM.
- we don't have a way to lock the USB port yet; but at least now it's communicated.
the connection number is re-used for all objects created
within a process space, so you can't `Drop` the connection
immediately when an object goes out of scope. You have to
make sure all instance of the object go out of scope. This
patch adds reference counting to all the objects so that
the `Drop` function works as intended.
- debounce is now in hardware (requires latest version of betrusted-soc)
- key events originate from an interrupt context and propagate through
to the listeners as messages
- attempt to reduce the use of heapless::Vec; there is an awkward
interposer step still between the array methodology and the Vec
methodology
I'm not sure if trying to eliminate the Vec is a good idea,
because...I'm finding that we're just re-implementing Vec, but
much worse.
However, for the purpose of movement of data across
IPC boundaries, it's more robust to use primitive types,
because serializing Vec is not possible without either
forking the heapless crate to derive the rkyv traits; or, we'd
have to do some probably quite dangerous conversion of the Vec
to a raw slice which also doesn't feel nice.
This rewrites the entire project so that most runnable projects now use
`xous-ipc` instead of `xous::String` where possible.
This also removes `rkyv` from the list of dependencies in `xous-rs`.
Signed-off-by: Sean Cross <sean@xobs.io>
Buffer keypresses so that keys are not lost. This improves
responsiveness, although there are still kernel plumbing issues.
Signed-off-by: Sean Cross <sean@xobs.io>
