writer

Plain text editor from scratch, made for the web. Drag and drop files to open them.

Architecture

• Buffer is an array of array of lines
• Text is manually measured and wrapped with canvas
• Lines are virtualized on scroll and drawn as divs
• Cursor and selection are also divs
• Word boundary operations are emulated with textarea
• Styling through CSS variables

Future

• B-tree buffer with height map
• History system
• Operational transform
• Alternate canvas renderer with FreeType and Harfbuzz