commit 3c4824dd1cddf3c4eae78613f4a5caf2caf17675
author Nigel Tao <nigeltao@golang.org> Thu Jul 28 18:36:50 2016 +1000
committer Nigel Tao <nigeltao@golang.org> Fri Jul 29 00:06:37 2016 +0000
tree c773d895ffea082886cd31983c980fd158a1bd9b
parent 3ab07599bdcf95ff9da9e8ae415c5183a6e749dc

shiny/widget/node: split Paint into Paint and PaintBase.

Also introduce the Sheet widget.

Follow-up changes will implement smooth scrolling, where cached textures
are simply re-drawn at different offsets, instead of a window-sized
buffer being drawn on and uploaded from scratch on every paint cycle.

Change-Id: Iea291a064200cb658004846cd6cf075131644464
Reviewed-on: https://go-review.googlesource.com/25321
Reviewed-by: David Crawshaw <crawshaw@golang.org>