glance/todo.md
2020-12-25 01:39:37 -08:00

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# Todo
## GUI Todo Now
* Export as a Haskell (.hs) file.
## Non-GUI Todo Now
* Redesign case icon to avoid non-locality.
* Move @ pattern circles so that they are on the same side as the variables.
* Add command line flags for color style, embedding, and whether to draw arrowheads.
* Add wiki pages discussing: Why a visual language?, History of Glance, How to contribute, Code guide [code style, ...], etc..
## GUI Todo Later
* Select areas by clicking the vertices of the selection area.
* Have a way to delete nodes and edges
* Display the undo state in the app [Bug #14](https://github.com/rgleichman/glance/issues/14)
* Add edge creation to history.
* Click a button that shows an image of the mouse and keyboard controls in a new window.
* Consider a way to keep the currentEdge after creating an edge. May
be useful where a variable is used mulitple times (e.g. a big struct
parameter).
* Create functions by connecting a second edge to an apply argument
port and then selecting the second output (or maybe just the select
the output of the function and connect the function up later?)
* Consider not redrawing everything every cycle. Perhaps exclude
things from drawing, or have two drawing passes on different timers.
* Use diagrams library for Cairo drawings.
* Extract out Cairo code into a module.
* Port expansion: similar to embedding, if a port is connected to a
node that is on top of it, the port expands to fit that node.
* Use a Gtk text box or similar for port text input/editing.
* Add dark boxes behind text to make it more legible
* Increase number of ports when the last port is connected.
* Update the port text's of connected ports when updating or
connecting a new port.
* Evaluate and display values. (e.g it should say x = 4) above a port.
### Testing todos
* Fix the arrowheads being too big for SyntaxGraph drawings.
### Visual todos
* Use different line styles (e.g. dashed, solid, wavy) in addition to colors
* Consider improving nested apply icons embedded in case/guard icons.
* Let lines connect to ports other than the original source
* Use diagrams to shrink the drawing until icons start overlapping.
* Make an icon font/library with labeled ports. E.g. the apply icon would have text labels "function", "result", "arg 0", "arg 1", etc.
### Translate todos
* Fix applyComposeScore in Translate.hs not counting expressions that nest via reference. May need to move compose generation to after translate.
* Add proper RecConstr, and RecUpdate support.
* Special case for otherwise.
### Command line todos
* Tab completion