rgleichman / glance Goto Github PK
View Code? Open in Web Editor NEWA visual Haskell
Home Page: https://www.youtube.com/channel/UCs2gsWfcy83Yqk873WkPfeg
License: Apache License 2.0
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silky shauns techscientist hbcbh1999 dmgleichman artisdom hardentoo www3838438 only1loatheb chenxian01 pel-daniel beauvankirk antimike jadegeekglance's Issues
support literate haskell
at the moment, when i run it on a literate haskell file it fails with
glance-exe: fromParseResult: Parse failed at [/home/noon/dev/literate-readme/README.lhs] (9:1): Parse error: #
CallStack (from HasCallStack):
error, called at src/Language/Haskell/Exts/ParseMonad.hs:80:41 in haskell-src-exts-1.17.1-CHFwoWxepXQKBbAz4YNlQX:Language.Haskell.Exts.ParseMonad
might be nice to support literate haskell :)
Enable zooming in the GUI
Improve graph layout
Problem
Graphviz produces very spread out images when laying out medium to large functions. Please see this SVG image.
findParentsWithEdges.zip
Background
There are a few causes for the large layout.
- In the function
doGraphLayoutinapp/Rendering.hs, the Graphviz node is set as a circle with a radius equal to the maximum height or width of the diagram. Since icon rotation happens after layout, using a large circle for the Graphviz node shape ensures that icons can be rotated without overlapping. However, this also means that the Graphviz node is much larger than the actual icon, especially for non-circular icons. - Graphviz does not seem to do a good job at graph layout when the node sizes have a high degree of variation. If Graphviz can not find a layout without overlaps, it reverts to scaling up the size of the layout. This means that all edges become longer.
Possible Solutions
- Graphviz has many layout algorithms, and each algorithm has many parameters. It's possible a better choice of algorithm or parameters in
app/Rendering.hscould improve things. - Something that might help would the following: after getting the graph layout from Graphviz, iteratively rotate the icons and check for overlap. Keep scaling down the layout until there is overlap. This approach might help a bit, but would not fix the deeper problem of a bad layout.
- Create a better graph layout algorithm. Such an algorithm ideally would also incorporate node rotation with layout.
The current plan of action is to investigate solution #3, creating a better graph layout algorithm.
fail to install
Looks like a promising project but had troubles installing after stack build :glance-exe.
Using Ubuntu 20.04, Stack 2.7.3
linear > Installing library in /home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/lib/x86_64-linux-ghc-8.8.4/linear-1.21.3-CqLrHLH1FJI8zNjM7Fnk1w
linear > Registering library for linear-1.21.3..
Progress 127/147
-- While building package haskell-gi-0.23.1 (scroll up to its section to see the error) using:
/home/hud/.stack/setup-exe-cache/x86_64-linux-tinfo6/Cabal-simple_mPHDZzAJ_3.0.1.0_ghc-8.8.4 --builddir=.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0 configure --user --package-db=clear --package-db=global --package-db=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/pkgdb --libdir=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/lib --bindir=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/bin --datadir=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/share --libexecdir=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/libexec --sysconfdir=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/etc --docdir=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/doc/haskell-gi-0.23.1 --htmldir=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/doc/haskell-gi-0.23.1 --haddockdir=/home/hud/.stack/snapshots/x86_64-linux-tinfo6/049412a74f7341233b6f5aa5a46fc04e234c5daf4cc67b57911791bf42ef2acf/8.8.4/doc/haskell-gi-0.23.1 --dependency=Cabal=Cabal-3.0.1.0 --dependency=ansi-terminal=ansi-terminal-0.10.3-9zJT3Osp5wTAaMBIHKdPu2 --dependency=attoparsec=attoparsec-0.13.2.4-AHmlmm44dvnKaiPmUJc2M1 --dependency=base=base-4.13.0.0 --dependency=bytestring=bytestring-0.10.10.1 --dependency=containers=containers-0.6.2.1 --dependency=directory=directory-1.3.6.0 --dependency=filepath=filepath-1.4.2.1 --dependency=haskell-gi-base=haskell-gi-base-0.23.0-8eZFmSUT7kd6BiSIiRePNX --dependency=mtl=mtl-2.2.2 --dependency=pretty-show=pretty-show-1.10-7q5amcqtFPNELOrR9L3gUm --dependency=process=process-1.6.9.0 --dependency=regex-tdfa=regex-tdfa-1.3.1.0-4a72PEc42IGJORTi63oOLR --dependency=safe=safe-0.3.19-LxDJURZu1921pHCEJqjvRE --dependency=text=text-1.2.4.0 --dependency=transformers=transformers-0.5.6.2 --dependency=xdg-basedir=xdg-basedir-0.2.2-LVv1BwILCJR4v8JryE8LvJ --dependency=xml-conduit=xml-conduit-1.9.0.0-I2LCqlxoj6q4Fw2bZ4mRaN --exact-configuration --ghc-option=-fhide-source-paths
Process exited with code: ExitFailure 1
Display undo state
The number of events _asUndoPosition is behind relative to _asHistory should be displayed in the GUI, as well as the total length of _asHistory. This is so that users know how far back in history they are. The principle behind this is that all state should be visible.
Strange Exception
Hi there, glance throws the following:
glance-exe: evalPattern: No pattern in case for PBangPat (PVar (Ident "n"))
CallStack (from HasCallStack):
error, called at app/Translate.hs:249:8 in main:Translate
Add history and undo to the GUI
Child of Issue #11
This can be done by having all user interactions create events which are saved once executed. All actions have an undo action.
GUI
Make a GUI for Glance. The current approach is to use Cairo and GTK. The rendering could be in a separate process so that interacting and dragging nodes is not slowed down by rendering.
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