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+:background:image-stretch:back.jpg,page-local
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+:L2c:,left:50,10,tab:30
+
+# Edlib
+## because one more editor is never enough
+
+
+
+
+
+
+
+
+
+:P:center,14
+Neil Brown
+
+
+LCA 2016 - Geelong
+
+# Edlib
+## because one more editor is never enough
+
+!400:200:standards.png
+:P:center,16,fg:purple
+xkcd.com/927
+
+:background:overlay:B-nun.JPG
+# I Love EMACS
+
+- have been using it for nearly 30 years
+- *vim* is quite good too!
+- good for code
+- good for email
+- lots of packages and add-ons.
+- not quite perfect
+- wikipedia lists over 100 others
+
+
+:background:overlay:B-bather2.JPG
+# Consider the MVC pattern
+## Model-View-Controller
+
+!350:190:mvc1.png
+
+:background:overlay:B-blue.JPG
+# Consider the MVC pattern
+## Model-View-Controller
+
+!380:160:mvc2.png
+
+Model is text buffer
+- characters with attributes.
+- indefinite undo.
+
+:background:overlay:B-boy.JPG
+# **Buffer List** buffer
+
+!400:160:bufferlist.png
+
+- That **GNU Emacs** buffer doesn't exist any more
+- Model requires indirection for non-text sources
+- "style" formatting must be stored in the buffer
+
+:background:overlay:B-fisher.JPG
+# `hexl-mode`
+
+!400:160:hexl.png
+- binary file must be converted to text (external program)
+- not effective for `/dev/sda`
+
+:background:overlay:B-flag.JPG
+# Back to Model-View-Controller
+
+!480:140:mvc3.png
+
+View is a window that interprets attributes
+- can hide, highlight, insert chars etc.
+- text can be "intangible" and "read-only"
+- attribute with hooks to call on change
+- no hooks to call on display
+
+:background:overlay:B-glamor.JPG
+# An attempt at a spreadsheet
+
+!400:200:xlnt-tex.png
+
+Uses a LaTeX table with expressions in comments
+
+:background:overlay:B-sailor.JPG
+# An attempt at a spreadsheet
+
+!450:150:xlnt-ss.png
+
+- code: hides and highlights and calculates.
+- felt like programming in assembly-language.
+- rendering isn't programmable.
+
+:background:overlay:B-bather.JPG
+# Model-View-Controller again
+
+!480:180:mvc4.png
+
+- Controller is elisp. Awesome.... or not.
+- steep learning curve for single use-case
+
+:background:overlay:B-camera.JPG
+# `edlib` - scratching an itch
+
+Everything is plugable
+
+- multiple "document" backends
+- multiple "language" bindings
+- multiple multi-stage "renderers"
+- multiple "display" managers
+- configurable key/event bindings (of course)
+- core provides essential abstractions
+- loadable libraries for everything else
+
+:background:overlay:B-nurse.JPG
+# edlib core - panes
+
+!400:170:panes.png
+
+- a pane represents an area of interaction
+- may have children with depth
+- sends and receives all messages
+
+:background:overlay:B-girl.JPG
+# edlib core - documents and marks
+
+- a document is a set of interfaces provided by a pane
+- document can be accessed as bytes, characters, lines, ...
+- multiple panes can access the one document
+- a mark is a location in a document - with state
+- marks can be grouped
+- easy to find "next" or "previous" in given group.
+
+:background:overlay:B-minister.JPG
+# edlib core - commands
+
+- commands pass control between panes
+- can pass control between languages
+- args are:
+ - two panes - source and destination
+ - two integers
+ - two strings
+ - two marks
+ - two co-ordinates (x,y or w,h)
+ - another command
+- return an integer ... or call-back the command
+
+:background:overlay:B-police.JPG
+# edlib core - attributes
+
+- attributes are named strings
+- elements (characters) in a document have attributes
+- panes, marks, and documents have attributes
+- can be used to pass extra information between
+ commands
+
+:background:overlay:B-clown.JPG
+# edlib plugins
+
+- documents: text buffer and directory
+- displays: ncurses and pygtk
+- render: lines, hex, format, complete, presentation
+- key bindings: emacs-like, per-pane
+- tile manager
+- status line/scroll bar
+- popups: search and find-file
+
+:background:overlay:B-scots.JPG
+# future work
+
+Currently have a working prototype. Want more...
+- re-evaluate all interfaces
+- unit tests!
+- lots more edit functionality
+- understand copy/paste for non-text documents
+- Bindings for Lua, and Rust? and ...
+- vi-like bindings
+- hexmode overlays for known structures
+ e.g. filesystem superblocks
+- Email client (based on notmuch)
+- spreadsheet?
+- wiggle plugin ... or plug in to wiggle
+
+:background:overlay:B-naked.JPG
+# Edlib - a naked bollard
+
+:P:center,samily:sans,15
+
+Ready for decorating
+
+
+
+github.com/neilbrown/edlib
+
+
+
+
+:P:center,family:sans,20
+Questions?
+
projects / edlib.git / commitdiff
