feat: supoort Windows Terminal

[TerakomariGandesblood]

Trying to support the preview version of Windows Terminal.
Known issues: #37 (comment)

[j4james]

If this is used to calculate the amount of space an image will occupy in character cells, it should be 10x20 for Windows Terminal (that's the cell size of the original VT340 hardware terminal).

You can also query the cell size with the CSI 16 t escape sequence.

[j4james]

You should be able to determine sixel support from the device attributes query, as is already done here:

ratatui-image/src/picker.rs

Lines 344 to 346 in e630e68

	if buf.contains(";4;") || buf.contains("?4;") || buf.contains(";4c") || buf.contains("?4c") {
	return Ok(ProtocolType::Sixel);
	}

That way you'll be able to support sixels in other terminals as well.

[benjajaja]

@j4james pointed out elsewhere that windows terminal effectively has a way to query font size!

So we can query the font size and sixel support without having to rely on guessing by processes and version files and so on. But to query, we currently do a bunch of things.

On POSIX, we put the terminal into canonical mode, disable echoing, and use fcntl to set the terminal in non-blocking mode.

On windows, I think (with the help of ChatGPT) that we should use SetConsoleMode to disable ENABLE_ECHO_INPUT and ENABLE_LINE_INPUT, and use PeekConsoleInput to read input without blocking indefinitely.

My plan of refactor would be:

1. Try out CSI 16 t (or 14) to get the font-size without tcgetwinsize first to test the waters.
2. Let query_device_attrs take the query as param, and let it return the response string.
3. Put the response->protocol parsing somewhere else, e.g. just inside guess_protocol.
4. Provide a windows version of query_device_attrs with the above mentioned Windows API calls instead of the POSIX API calls.
5. Consider removing from_termios() and just have one method/constructor that queries the terminal for everything 😍

[TerakomariGandesblood]

Sounds good. I hadn't thought of these things because I'm not familiar enough with terminals, so it looks like I have some learning to do.

[benjajaja]

I can take care of steps 1-3.

[benjajaja]

@TerakomariGandesblood I did some changes to Picker on master. You should try it out, it should just work with the terminal of WSL if I understand correctly. For non-WSL (so only halfblocks but proper alignement) it may also be possible to translate query_stdio_capabilities to the Windows Console API.

Edit: fixing the CI for windows builds, should be ready in a while...

[TerakomariGandesblood]

Great job, I'll check it out in a few days

[TerakomariGandesblood]

Already implemented this feature in other PR, so close this PR.