diagrams-cairo: Cairo backend for diagrams drawing EDSL

[ bsd3, graphics, library ] [ Propose Tags ]

A full-featured backend for rendering diagrams using the cairo rendering engine.


[Skip to Readme]
Versions [faq] 0.1, 0.1.1, 0.1.2, 0.2, 0.3, 0.4, 0.5, 0.5.0.1, 0.5.0.2, 0.6, 0.7, 1.0, 1.0.1, 1.0.1.1, 1.0.1.2, 1.1, 1.1.0.1, 1.1.0.2, 1.2, 1.2.0.1, 1.2.0.2, 1.2.0.3, 1.2.0.4, 1.2.0.5, 1.2.0.6, 1.2.0.7, 1.3, 1.3.0.1, 1.3.0.2, 1.3.0.3, 1.3.0.4, 1.3.0.5, 1.3.0.6, 1.3.1, 1.3.1.1, 1.3.1.2, 1.4, 1.4.1
Change log CHANGES.markdown
Dependencies base (>=4.2 && <4.8), cairo (>=0.12.4 && <0.13), colour, containers (>=0.3 && <0.6), data-default-class (>=0.0.1 && <0.1), diagrams-core (==1.0.*), diagrams-lib (==1.0.*), directory, filepath, ghc-prim, hashable (>=1.1 && <1.3), lens (>=3.8 && <4), mtl (>=2.0 && <2.2), old-time, process, split (>=0.1.2 && <0.3), statestack (==0.2.*), time, unix (>=2.4 && <2.7) [details]
License BSD-3-Clause
Author Brent Yorgey
Maintainer diagrams-discuss@googlegroups.com
Category Graphics
Home page http://projects.haskell.org/diagrams
Bug tracker http://github.com/diagrams/diagrams-cairo/issues
Source repo head: git clone http://github.com/diagrams/diagrams-cairo.git
Uploaded by BrentYorgey at Thu Jan 30 21:11:59 UTC 2014
Distributions Debian:1.4.1, NixOS:1.4.1
Downloads 20435 total (690 in the last 30 days)
Rating (no votes yet) [estimated by rule of succession]
Your Rating
  • λ
  • λ
  • λ
Status Hackage Matrix CI
Docs available [build log]
Successful builds reported [all 1 reports]

Modules

[Index]

Downloads

Maintainer's Corner

For package maintainers and hackage trustees


Readme for diagrams-cairo-1.0.1.1

[back to package description]

Build Status

diagrams-cairo is a rendering backend for diagrams, a powerful, flexible, declarative domain-specific language for creating vector graphics, using the Haskell programming language.

diagrams-cairo is implemented using the cairo rendering engine and is a fully-featured, officially supported backend for diagrams.

Installation

cabal update && cabal install gtk2hs-buildtools diagrams-cairo

Basic usage

A simple example that uses diagrams-cairo to draw a blue circle:

import Diagrams.Prelude
import Diagrams.Backend.Cairo.CmdLine

d = circle 1 # fc blue

main = mainWith (pad 1.1 d)

Save this to file named Circle.hs and compile it:

ghc --make Circle.hs

This will generate an executable which, when run, outputs a blue circle to some file. Run the executable with the --help option to find out more about how to call it.

$ ./Circle --help
./Circle

Usage: ./Circle [-w|--width WIDTH] [-h|--height HEIGHT] [-o|--output OUTPUT]
                [--loop] [-s|--src ARG] [-i|--interval INTERVAL]
  Command-line diagram generation.

Available options:
  -?,--help                Show this help text
  -w,--width WIDTH         Desired WIDTH of the output image
  -h,--height HEIGHT       Desired HEIGHT of the output image
  -o,--output OUTPUT       OUTPUT file
  -l,--loop                Run in a self-recompiling loop
  -s,--src ARG             Source file to watch
  -i,--interval INTERVAL   When running in a loop, check for changes every INTERVAL seconds.
ommand-line diagram generation.

The output type will be automatically determined from the file extension. Currently PNG, PDF, PS, and SVG are supported.

$ ./Circle -o circle.png -w 400

The command above generates a PNG file with a width of 400px.

Advanced usage

Instead of just creating a standalone executable, the cairo backend can also be called from within a larger program. For more information, see the Diagram.Backend.Cairo module.