An extension for Visual Studio Code to preview Typescript classes as directed acyclic graphs using Graphviz (DOT).
You can install this extension from the Visual Studio Marketplace.
Open the Command Palette (usually by pressing Ctrl + Shift + P), then select “Prop DAG: Show Preview”.
| Action | Gesture |
|---|---|
| Zoom in | Mouse wheel up / + |
| Zoom out | Mouse wheel down / - |
| Toggle 100% zoom | Mouse double click / Space |
| Pan | Mouse drag / Left / Right / Up / Down / A / D / W / S |
| Zoom to 100% | 0 |
| Move to center | X |
There are three zooming modes: Fixed, Fit and Auto Fit.
- Fixed: The zoom ratio does not change when the source changes or the window size changes.
- Fit: The graph is scaled to align to the border of the visible view area.
- Auto Fit: When the view area is big enough to contain a 100% sized graph, the graph will be set a zoom ratio of 100%, otherwise the graph is scaled to fit into the view area.
To export the generated graph, click the “Export” button on the top right corner.
| Configuration | Type | Description |
|---|---|---|
propDag.dotPath |
string | null |
null means to use the “dot” program in your PATH environment variable, or a string value to indicate the “dot” program you want to use. |
propDag.engine |
"dot" | null |
The layout engine to use. null means to use the “dot” layout engine. Currently, only the “dot” engine is supported. |
Make sure the extension can find the “dot” program. You can set propDag.dotPath option to the path of the dot
executable, or make sure the directory containing the dot program is in your PATH environment variable.
To set the propDag.dotPath option, go to File → Preference → Settings.
- After saving an untitled file, the preview becomes invalid.
- When the zoom ratio is too large, the graph may be at a wrong position.