Clone() allows duplicating the image that's stored in the GRSurface.
Test: Run recovery_unit_test.
Change-Id: Ia50d507c6200f2de5f17143775de805247a60e1f
This prepares for the removal of the default and copy ctors, by making
GRSurface::Create() as the only way to get GRSurface instances.
Test: mmma -j bootable/recovery
Test: Run recovery_unit_test on marlin.
Change-Id: I0c34c3f3967e252deb020907c83acbac8a8f36b9
This CL adds GRSurface::Create() and dtor for managing the allocated
memory in GRSurface class. It also adds GRSurface::data() that hides the
underlying implementation, with both of const and non-const overloads.
This allows `const GRSurface&` to be more useful - previously it only
ensured a const member variable of `data`, instead of a read-only buffer
it points to.
It also marks the parameters in gr_texticon() and gr_blit() as const, as
they're incoming source that shouldn't be altered. It corrects the type
of gr_draw, which is the sink to be painted on (an earlier attempt was
made in [1], but didn't get the full picture correctly).
[1] https://android-review.googlesource.com/c/platform/bootable/recovery/+/704757/
Test: mmma -j bootable/recovery
Test: recovery_unit_test on marlin
Test: Run graphics test on marlin (fbdev).
Test: Run graphics test on blueline (drm).
Change-Id: I7904df084cd6c08fa04a9da97d01b4b1a6e3a20c
