Awesome

duitdraw

shiny backend for duit

About

Duit is a ui toolkit for go. As a backend it uses plan9 port's /dev/draw emulation via a go interface.

This has a some drawbacks:

• heavy run time dependency
• no easy windows support
• no simple deployment with a single static binary

As a first step duitdraw is a drop-in replacement for github.com/9fans/go/draw, using a backend based on shiny. This has the advantage, that no changes are needed for duit.

Once this becomes a valid alternative to the original drawing backend, duit could be changed to interface better with shiny.

The scope of the package is not a full implementation of 9fans.net/go/draw. Everything that is not needed by duit in the initial release state is removed.

Usage

To try the backend, copy the content of this repository to $GOPATH/src/9fans.net/go/draw and recompile duit.

Current state

This is just a very basic first first release and tested only on windows. Please test and comment.

• fonts (right now Go regular is embedded)
  • plan9 style or ttf path?
  • ttf: freetype or golang.org/x/image/font/sfnt?
• drawing
  • only a simple line algorithm is implemented
  • which rasterization should be used, freetype or golang.org/x/image/vector?
  • general line rasterizer missing
  • Arc, FillArc missing (ellipse.go)
• clipboard
  • uses atotto's, is that ok?
• mouse movement
  • uses as/cursor, is that ok?
  • inner window offset is hard coded
• shiny
  • window flickers on resize, are we using shiny the wrong way?