This refactors most features out of ok's core into vias:
-w --> a .png dumping via, "png", opening the door to other types
-m/-s --> a filtering via "filter"
Everything now can print a brief help message too.
Change-Id: I9e653aab98fd57182a6d458c7a80052130980284
Reviewed-on: https://skia-review.googlesource.com/10509
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This makes everything a lot more like DM, for the same reason:
it's the best way to make Vias work.
Instead of exposing a canvas, Dsts take a Src to draw. Vias still are
Dsts that wrap Dsts. They do their internal work in draw() then pass a
proxy Src encapsulating that work to the next Dst's draw().
A little refactoring in ok.cpp allows arbitrary chains of Vias.
I removed the guarantee that Src methods are called in strict order.
It's easy enough to make each Src initialize itself as needed.
I moved the .png encoding back to ok.cpp. It seemed weird for Dsts to
have to think about files and paths. One day Dst will want a data()
method for non-image output (.pdf, .skp), and then we'll want ok.cpp to
be the one to coordinate what to write where.
Change-Id: Id4a3674b2d05aef2b5f10e0077df0a8407c07b61
Reviewed-on: https://skia-review.googlesource.com/10175
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Not sure if these simple Src/Dst interfaces will last.
Vias are a little tricky, and some may be impossible.
Change-Id: I42d19b1ee74b51a830bb781f25a888c0b32ba98c
Reviewed-on: https://skia-review.googlesource.com/10174
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
