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Canvas Current Node Auto Size

by fengzhe
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Description

Auto-size only the currently edited Canvas text node, with CJK-friendly width padding and configurable height. - This plugin has not been manually reviewed by Obsidian staff.

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Latest Version

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Changelog

See all version on GitHub

README file from

Github

Canvas Current Node Auto Size

Canvas Current Node Auto Size is an Obsidian plugin that automatically resizes only the Canvas text node you are currently editing.

The plugin is designed for compact Canvas mind maps. It keeps the current node wide enough for the text you type, adds extra width for CJK text, and avoids moving neighboring nodes.

Features

  • Auto-size only the currently edited Canvas text node.
  • Grow right, grow left, or grow from the center.
  • Keep other Canvas nodes untouched.
  • Add CJK-friendly width padding for Chinese, Japanese, and Korean text.
  • Add temporary anti-wrap width while editing.
  • Optionally tighten width once after leaving edit mode.
  • Configure single-line height and vertical padding.
  • Show debug information from the Obsidian command palette.

Use Cases

This plugin is useful when you:

  • Build mind maps in Obsidian Canvas.
  • Create many short text nodes.
  • Want nodes to grow while typing.
  • Want Chinese text to be less likely to wrap at the last character.
  • Do not want automatic layout logic to push other nodes away.

This plugin does not try to provide full automatic layout, collision avoidance, or graph rearrangement.

Installation

From Obsidian Community Plugins

After the plugin is accepted into the Obsidian community plugin directory, you will be able to install it from Obsidian:

  1. Open Settings.
  2. Go to Community plugins.
  3. Search for Canvas Current Node Auto Size.
  4. Install and enable the plugin.

Manual Installation

For manual installation, download the release assets and place them in your vault:

.obsidian/plugins/canvas-current-node-auto-size/
├── main.js
└── manifest.json

Then reload Obsidian and enable the plugin.

This plugin requires Obsidian 1.12.0 or newer.

Development

Install dependencies:

npm install

Build the plugin:

npm run build

The build command runs TypeScript type checking and then bundles src/main.ts into main.js.

Settings

Basics

Expansion direction

Controls how the node expands when its width changes.

  • Grow right keeps the left edge stable.
  • Grow from center expands both sides.
  • Grow left keeps the right side more stable.

Only the current node is moved or resized.

Tighten width on exit

When enabled, the plugin shrinks the node width once after you leave edit mode.

This option is disabled by default because tightening can feel surprising in dense Canvas layouts.

Maximum width

The largest width the plugin can assign to a node.

Default: 520

Width

Base width padding

Extra width added around measured text in all cases.

Default: 20

CJK extra width

Extra width added only to lines that contain Chinese, Japanese, or Korean text.

Default: 18

Increase this value if CJK text still wraps too early.

Editing anti-wrap width

Temporary extra width while editing.

Default: 28

This helps avoid accidental wrapping at the right edge while typing.

Exit tighten padding

Extra visible space kept after tightening width on exit.

Default: 40

This setting is shown only when Tighten width on exit is enabled.

Height

Single-line height

Minimum height reserved for a one-line node.

Default: 44

Increase this value if one-line nodes look compressed.

Vertical padding

Extra total height around node text.

Default: 10

Increase this value if a Canvas node shows a vertical scrollbar after editing.

Advanced

Resize delay

Delay after typing before resizing, in milliseconds.

Default: 40

Restart Obsidian or reload the plugin after changing this setting.

Debug notices

Show temporary debug notices whenever the plugin evaluates a Canvas node.

This is mainly useful while troubleshooting.

Commands

The plugin adds this command to the Obsidian command palette:

  • Show last Canvas auto-size debug

The debug output includes the current node id, line count, original width, live width, tighten width, maximum height, and target size.

Limitations

  • The plugin is focused on Canvas text nodes.
  • It does not move neighboring nodes.
  • It does not perform automatic Canvas layout.
  • It does not directly edit .canvas JSON files.
  • Height measurement is intentionally conservative for stability.
  • Existing saved settings are not overwritten when plugin defaults change.

Documentation

Additional Chinese documentation is available in the repository:

License

MIT

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