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This makes Terminal::scroll_up() O(1) instead of O(n) in the
size of the history. (It's still O(n) in the size of visible
lines.)
Reduces time to run `disasm /bin/id` with the default terminal
window size from 530ms to 409ms (min-of-5) on my system.
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This time, without trailing 's'. Ran:
git grep -l 'codepoint' | xargs sed -ie 's/codepoint/code_point/g
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This reverts commit ea9ac3155d1774f13ac4e9a96605c0e85a8f299e.
It replaced "codepoint" with "code_points", not "code_point".
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Unicode calls them "code points" so let's follow their style.
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Sometimes you just want to get rid of all your scrollback history in
the terminal, and now there's a way to do that.
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Replace KeyEvent text attribute usage with code_point.
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You can now request an update of the terminal's window progress by
sending this escape sequence:
<esc>]9;<value>;<max_value>;<escape><backslash>
I'm sure we can find many interesting uses for this! :^)
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This will let us share it between the userspace (TerminalWidget) and the Kernel.
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Instead of relying on the GUI code to handle UTF-8, we now process
and parse the incoming data into 32-bit codepoints ourselves.
This means that you can now show emojis in the terminal and they will
only take up one character cell each. :^)
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This will allow us to have much better Unicode support. It does incur
a memory usage regression which we'll have to optimize to cover.
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Lines in the history should not be considered for update at all.
Fixes #2185
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The buffer positions referred to by a VT::Position now include history
scrollback, meaning that a VT::Position with row=0 is at the start of
the history.
The active terminal buffer keeps moving in VT::Position coordinates
whenever we scroll. This allows selection to follow history. It also
allows us to click hyperlinks in history.
Fixes #957.
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We now support basic hyperlinking in the terminal with <OSC>;8;;URL<ST>
Links are opened via LaunchServer on Ctrl+LeftMouse.
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Tolerate sequences ending in both <0x07> (BEL) and <0x1b> <0x5c> (ST).
The former is apparently an Xterm extension and the latter is standard.
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Also emit query responses in a single write() syscall instead of going
character-at-a-time.
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We should rename all of these functions to match the real VT100 names.
This will make it 100% easier to work on LibVT.
For reference: https://vt100.net/docs/vt100-ug/
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Seems like there are many escape sequences that don't start with
brackets, so let's call the post-escape state "GotEscape" instead. :^)
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I think this can just behave as if you sent a newline character ('\n').
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This is apparently a "confidence test" supported by VT100.
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This is used by vttest on startup to query the device for identity.
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As suggested by Joshua, this commit adds the 2-clause BSD license as a
comment block to the top of every source file.
For the first pass, I've just added myself for simplicity. I encourage
everyone to add themselves as copyright holders of any file they've
added or modified in some significant way. If I've added myself in
error somewhere, feel free to replace it with the appropriate copyright
holder instead.
Going forward, all new source files should include a license header.
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Fixes #829
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This API allows you to add arbitrary input at the current cursor
position. You can even do escape sequences! :^)
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This was a workaround to be able to build on case-insensitive file
systems where it might get confused about <string.h> vs <String.h>.
Let's just not support building that way, so String.h can have an
objectively nicer name. :^)
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This is not as perfect as it is elsewhere in the system, as we cannot
really change how terminal "thinks about" characters and bytes. What
we can do though, and what this commit does, is to *render* emojis, but
make it seem as if they take up all the space, and all the columns their
bytes would take if they were all regular characters.
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The default (hard-coded) history size is 500 lines. When the history is
altered, the TerminalClient is notified via terminal_history_changed().
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We have one of these per character in the terminal buffers, so it's a
decent haircut. :^)
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Now that we're bringing back the in-kernel virtual console, we should
move towards having a single implementation of terminal emulation.
This patch rips out the emulation code from the Terminal application
and turns it into the beginnings of LibVT.
The basic design idea is that users of VT::Terminal will implement and
provide a VT::TerminalClient subclass to handle presentation-specific
things. We'll need to iterate on this, but it's a start. :^)
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