NEWS.md
In terminalgraphics: Graphical Output in Terminals

terminalgraphics 0.3.0

When the size of the terminal changes new plots (e.g. when calling implicitly or explicitly new.plot) will rescale to follow the size of the new terminal. This happens only when the width and height of the plot were not explicitly set. Note that after resizing the terminal updates to a new plot will not resize the plot.

Support for Terminal Graphics Protocol and Sixel was not properly detected in Vim and NVim terminals. In NVim this even caused the terminal to hang. Code now checks if it is running in such a terminal. Graphics output is not supported in these terminals, but at least now this is detected properly.
Sixel support is now detected when running in tmux for terminals that support sixel.
term_palette() no longer gives an error and returns the default palette, when run in kitty with remote control disabled.

Opening a sixel or tgp device generated an error when either raster or ragg (version <= 1.5.0) is installed.

Adds support for the terminal graphics protocol (tgp) when used within tmux. Leveraging this feature requires that tmux is configured with allow-passthrough on. (@dgkf, #9)
Fixes the labelling of values in term_dim(), which previously had columns and rows names swapped. (@dgkf, #9)
Add options term_background, term_foreground and term_palette to set the background and foreground colour of the terminal. Currently these are only detected automatically in kitty. With these options it is possible to set these manually for other terminals. Note that in order to automatically use these in new devices, either the argument term_col = TRUE of tgp() or sixel(). or the option term_col = TRUE needs to be set. (#8)
Add support for quering colour mode (dark/light) for terminals that support this. When term_col = TRUE, different default colours are used for dark and light mode. When the terminal does not support this, the colours of light mode are used. (@dgkf, #11)
New is_ghostty() function to determine if we are running in ghostty.

The package now uses the new feature of ragg (>1.5.0) where it is possible to query the ragg device if it has changed (https://github.com/r-lib/ragg/issues/204). This has the advantage that it is much less resource intensive to detect changes. Previously changes were detected by comparing the raster pixel by pixel to the previous raster. It is also more reliable. For example when a plot command does not change the device, the device previously also didn't update, which could be confusing. Note that at the moment of release of this version of terminalgraphics this feature is not yet available in the version of ragg currently on CRAN.
Determination of DPI of output handles missing resolution.