skia2/README.md at 275157f7d29ba0f68071a21a0fcb14bd59a10a7d

Hal Canary 66bf2cfb93 experimental/editor: progress on newlines

Editor:
  - Editor::Shape(): Place end-of-line cursor correctly.
  - Editor::insert(): Allow insertion of '\n' character.
  - Don't try to reshape empty string each time.
  - Editor::insert(), Editor::setText(): Validate utf8 input
  - Editor::remove(): Delete across newlines.
  - Editor::copy(): implement.
  - Editor::text() Iterator.

App:
  - Implement Ctrl-c, Ctrl-x, Ctr-v
  - Implement Ctrl-s
  - Handle "Enter" key as "insert '\n'"

StringSlice:
  - Cleanup, copy ctor.

Change-Id: I724edb82c93b30f4d5279f5a99036459a21ca2cd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/222508
Auto-Submit: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>

2019-06-24 17:24:35 +00:00

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#Editor#

This is an experimental Editor layer that abstracts out SkShaper text layeout for easy embedding into an application. The Editor layer is agnostic about the operating system.

+--------------------------------+
|Application                     |
+-+----+-------------------------+
  |    |
  |    |
  |  +-v-------------------------+
  |  |Editor                     |
  |  +-+----+--------------------+
  |    |    |
  |    |    |
  |    |  +-v--------------------+
  |    |  |SkShaper              |
  |    |  +-+--------+-----------+
  |    |    |        |
  |    |    |        |
+-v----v----v--+   +-v-----------+
|Skia          |   |HarfBuzz, ICU|
+--------------+   +-------------+

The Application layer must interact with the:

Windowing system
File system
Clipboard
Keyboard/mouse input.

Try it out:

tools/git-sync-deps
bin/gn gen out/default
ninja -C out/default editor
out/default/editor whitespace.txt

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