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Mitchell Hashimoto libghostty: expose row-local render selections 2mo ago

libghostty: expose row-local render selections Render state already tracks the selected cell range for each viewport row, but C renderers could only get the full terminal selection. That required consumers to map global selection pins back into row-local spans themselves. Add row selection data to the render-state row API. Querying the new row data returns GHOSTTY_NO_VALUE for unselected rows and writes the inclusive start and end columns for selected rows. The render example now demonstrates setting a selection and reading the row-local range while iterating rows.

2 months ago

libghostty: expose row-local render selections Render state already tracks the selected cell range for each viewport row, but C renderers could only get the full terminal selection. That required consumers to map global selection pins back into row-local spans themselves. Add row selection data to the render-state row API. Querying the new row data returns GHOSTTY_NO_VALUE for unselected rows and writes the inclusive start and end columns for selected rows. The render example now demonstrates setting a selection and reading the row-local range while iterating rows.

2 months ago

vt: add c render state api and example Introduce the first public C render-state surface for libghostty-vt. Before this change, the render-state path was only available in Zig, so C embedders had no direct way to create and update that cache. Add an opaque GhosttyRenderState type with new, update, and free entry points, then wire those symbols through the C API bridge and library exports. Keep the surface intentionally minimal for now so ownership and update behavior are established before adding read accessors.

5 months ago

vt: add c render state api and example Introduce the first public C render-state surface for libghostty-vt. Before this change, the render-state path was only available in Zig, so C embedders had no direct way to create and update that cache. Add an opaque GhosttyRenderState type with new, update, and free entry points, then wire those symbols through the C API bridge and library exports. Keep the surface intentionally minimal for now so ownership and update behavior are established before adding read accessors.

5 months ago

README.md

Example: `ghostty-vt` Render State#

This contains an example of how to use the ghostty-vt render-state API to create a render state, update it from terminal content, iterate rows and cells, read styles and colors, inspect cursor and row-local selection state, and manage dirty tracking.

This uses a build.zig and Zig to build the C program so that we can reuse a lot of our build logic and depend directly on our source tree, but Ghostty emits a standard C library that can be used with any C tooling.

Usage#

Run the program:

zig build run