Can't zoom dot files

When I try to use PlantUML to simply render a directed graph using DOT syntax, eg:

@startdot
digraph g {
  node1 -> node2 -> node3
}
@enddot

the graph appears, but nothing happens when I’m clicking on the zoom controls in the PlantUML tool window.

The built-in UML examples got rendered as expected and they can be zoomed in and out too.

I’ve tried it with nix-env -i plantuml graphviz and brew install plantuml, but neither versions work with the latest 2.22.0 PlantUML plugin.

$ dot -v < /dev/null
dot - graphviz version 2.43.0 (0)
libdir = "/usr/local/Cellar/graphviz/2.42.2/lib/graphviz"
Activated plugin library: libgvplugin_dot_layout.6.dylib
Using layout: dot:dot_layout
Activated plugin library: libgvplugin_core.6.dylib
Using render: dot:core
Using device: dot:dot:core
The plugin configuration file:
        /usr/local/Cellar/graphviz/2.42.2/lib/graphviz/config6
                was successfully loaded.
    render      :  dot dot_json fig gd json json0 map mp pic pov ps quartz svg tk visio vml vrml xdot xdot_json
    layout      :  circo dot fdp neato nop nop1 nop2 osage patchwork sfdp twopi
    textlayout  :  textlayout
    device      :  bmp canon cgimage cmap cmapx cmapx_np dot dot_json eps exr fig gd gd2 gif gv icns ico imap imap_np ismap jp2 jpe jpeg jpg json json0 mp pct pdf pic pict plain plain-ext png pov ps ps2 psd sgi svg svgz tga tif tiff tk vdx vml vmlz vrml wbmp xdot xdot1.2 xdot1.4 xdot_json
    loadimage   :  (lib) bmp eps gd gd2 gif jpe jpeg jpg pdf png ps svg xbm

$ plantuml -version
PlantUML version 1.2020.00 (Sat Jan 11 20:30:53 HKT 2020)
(GPL source distribution)
Java Runtime: OpenJDK Runtime Environment
JVM: OpenJDK 64-Bit Server VM
Java Version: 13.0.1+9
Operating System: Mac OS X
Default Encoding: US-ASCII
Language: en
Country: HK
Machine: lynx.local
PLANTUML_LIMIT_SIZE: 4096
Processors: 16
Max Memory: 21,474,836,480
Total Memory: 1,350,565,888
Free Memory: 1,341,099,264
Used Memory: 9,466,624
Thread Active Count: 1

The environment variable GRAPHVIZ_DOT has been set to /usr/local/opt/graphviz/bin/dot
Dot executable is /usr/local/opt/graphviz/bin/dot
Dot version: dot - graphviz version 2.43.0 (0)
Installation seems OK. File generation OK

[krasa]

I will create an issue for PlantUML, and maybe also try to implement rendering using SVG, that would solve everything.

[patkujawa-wf]

@krasa yes, a retina display. Though even on my external monitor (non-retina) it is small, and I don’t have any special DPI setting. If anything, I typically set things so they are larger, not smaller, with my old, tired eyes 😄