Compile Typst/LaTeX as you write

[fabawi]

Currently Typst supports PDF, SVG, and canvas compilation, however, compilation has to be explicitly triggered. For canvas output, it needs to:

• Compile Typst/LaTeX on save
• Render changes rather than re-render the entire document
• Perform compilation progressively This might not be necessary after all
• Transmit feedback from canvas viewer to the renderer to specify pages being currently viewed Not needed for canvas rendering since the component is not remounted on every compile and preserves its last state

[fabawi]

@seofernando25 #105 has been merged, thank you!

It seems #105 works just fine for auto-compile on save. Independent of this pull request, some additional features and minor modifications need to be implemented for it to not interrupt the editing flow:

• Disable the compile notification when auto-compile on save is enabled (checked)
• "Auto-compile on project open" results in double compilation when auto-compile on save is enabled (checked) and the current document is the one being auto-compiled
• If the compilation is running, it should first stop the compilation before re-compiling on save. Otherwise, it would trigger an error when the saving interval is shorter than the compile time which is especially problematic for larger LaTeX documents
• The renderers (SVG, PDF, and Canvas) should preserve the current position and avoid showing a loading page when re-rendering is done (although this should be the case when re-rendering through any trigger and not specific to auto-compile on save, but the latter is where this issue becomes more significant)

[fabawi]

• Disable the compile notification when auto-compile on save is enabled (checked)

We instead disable notification for canvas renders

• If the compilation is running, it should first stop the compilation before re-compiling on save. Otherwise, it would trigger an error when the saving interval is shorter than the compile time which is especially problematic for larger LaTeX documents

Not necessary for Typst Canvas rendering. Right now, auto-compile on save works for legacy PDF as well where this is still be a problem: We could either disable auto-compile in legacy mode (only mode supported by LaTeX) or add a queue and discard all requests up to the latest compile

• The renderers (SVG, PDF, and Canvas) should preserve the current position and avoid showing a loading page when re-rendering is done (although this should be the case when re-rendering through any trigger and not specific to auto-compile on save, but the latter is where this issue becomes more significant)

This is support in Typst Canvas rendering now in #137