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Simon Tatham 329087e2da Patch from Egmont Koblinger to implement two extended variants of
xterm mouse tracking, both supported by the current up-to-date xterm
(288). They take the form of two new DEC terminal modes, 1006 and
1015, which do not in themselves _enable_ mouse tracking but they
modify the escape sequences sent if mouse tracking is enabled in the
usual way.

[originally from svn r9752]
2013-01-23 22:59:17 +00:00
Simon Tatham 21b04f5e00 Patch from Matsui Nag to implement xterm's "bracketed paste mode", in
which text pasted into the terminal is preceded and followed by
special function-key-like escape sequences ESC[200~ and ESC[201~ so
that the application can identify it and treat it specially (e.g.
disabling auto-indent-same-as-previous-line in text editors). Enabled
and disabled by ESC[?2004h and ESC[?2004l, and of course off by
default.

[originally from svn r9412]
2012-02-19 10:27:18 +00:00
Simon Tatham a1f3b7a358 Post-release destabilisation! Completely remove the struct type
'Config' in putty.h, which stores all PuTTY's settings and includes an
arbitrary length limit on every single one of those settings which is
stored in string form. In place of it is 'Conf', an opaque data type
everywhere outside the new file conf.c, which stores a list of (key,
value) pairs in which every key contains an integer identifying a
configuration setting, and for some of those integers the key also
contains extra parts (so that, for instance, CONF_environmt is a
string-to-string mapping). Everywhere that a Config was previously
used, a Conf is now; everywhere there was a Config structure copy,
conf_copy() is called; every lookup, adjustment, load and save
operation on a Config has been rewritten; and there's a mechanism for
serialising a Conf into a binary blob and back for use with Duplicate
Session.

User-visible effects of this change _should_ be minimal, though I
don't doubt I've introduced one or two bugs here and there which will
eventually be found. The _intended_ visible effects of this change are
that all arbitrary limits on configuration strings and lists (e.g.
limit on number of port forwardings) should now disappear; that list
boxes in the configuration will now be displayed in a sorted order
rather than the arbitrary order in which they were added to the list
(since the underlying data structure is now a sorted tree234 rather
than an ad-hoc comma-separated string); and one more specific change,
which is that local and dynamic port forwardings on the same port
number are now mutually exclusive in the configuration (putting 'D' in
the key rather than the value was a mistake in the first place).

One other reorganisation as a result of this is that I've moved all
the dialog.c standard handlers (dlg_stdeditbox_handler and friends)
out into config.c, because I can't really justify calling them generic
any more. When they took a pointer to an arbitrary structure type and
the offset of a field within that structure, they were independent of
whether that structure was a Config or something completely different,
but now they really do expect to talk to a Conf, which can _only_ be
used for PuTTY configuration, so I've renamed them all things like
conf_editbox_handler and moved them out of the nominally independent
dialog-box management module into the PuTTY-specific config.c.

[originally from svn r9214]
2011-07-14 18:52:21 +00:00
Jacob Nevins 0e202b3dcc Cosmetic: clarify that term->xterm_mouse is not boolean, etc.
[originally from svn r8374]
2008-12-20 18:52:09 +00:00
Simon Tatham 6104963b9b Er, ahem. Other half of r6788. :-/
[originally from svn r6791]
[r6788 == 09f86ce7ec]
2006-08-15 22:48:01 +00:00
Jacob Nevins 54741e1271 Add/tweak a couple of comments.
[originally from svn r6576]
2006-02-19 14:10:02 +00:00
Simon Tatham 569da2eb7b Cursor position, selection highlights and mouse clicks are now all
transformed back and forth according to the character position
permutation output from the bidi algorithm. I was expecting that to
be a lot harder.

[originally from svn r4915]
2004-11-28 09:24:57 +00:00
Simon Tatham 7ecf13564a New timing infrastructure. There's a new function schedule_timer()
which pretty much any module can call to request a call-back in the
future. So terminal.c can do its own handling of blinking, visual
bells and deferred screen updates, without having to rely on
term_update() being called 50 times a second (fixes: pterm-timer);
and ssh.c and telnet.c both invoke a new module pinger.c which takes
care of sending keepalives, so they get sent uniformly in all front
ends (fixes: plink-keepalives, unix-keepalives).

[originally from svn r4906]
[this svn revision also touched putty-wishlist]
2004-11-27 13:20:21 +00:00
Simon Tatham 6b136f5c2f Store line widths in the bidi cache, so we don't fail to re-bidi a
line when the window size changes.

[originally from svn r4631]
2004-10-15 11:11:19 +00:00
Simon Tatham 089775eb02 First-stage support for Unicode combining characters. The `chars'
array of each `termline' structure now contains optional additional
entries after the normal number of columns, which are used to chain
a linked list of combining characters off any primary termchar that
needs it. This means we support arbitrarily many combining
characters per cell (unlike xterm's hard limit of 2).

Cut and paste works correctly (selecting a character cell containing
multiple code points causes all those code points to be cut and
pasted). Display works by simply overlaying all the relevant
characters on top of one another; this is good enough for Unix
(xterm does the same thing), and mostly seems OK for Windows except
that the Windows Unicode fonts have a nasty habit of not containing
most of the combining characters and thus overlaying an
unknown-code-point box on your perfectly good base glyph.

I had no idea how to add support in the Mac do_text(), so I've
simply stuck in an assertion that will trigger the first time a
combining character is displayed, and hopefully this will bite
someone with the clue to fix it.

[originally from svn r4622]
2004-10-14 16:42:43 +00:00
Simon Tatham 709a94e5f2 Re-engineering of terminal emulator, phase 1.
The active terminal screen is no longer an array of `unsigned long'
encoding 16-bit Unicode plus 16 attribute bits. Now it's an array of
`termchar' structures, which currently have 32-bit Unicode and 32
attribute bits but which will probably expand further in future.

To prevent bloat of the memory footprint, I've introduced a mostly
RLE-like compression scheme for storing scrollback: each line is
compressed into a compact (but hard to modify) form when it moves
into the term->scrollback tree, and is temporarily decompressed when
the user wants to scroll back over it. My initial tests suggest that
this compression averages about 1/4 of the previous (32 bits per
character cell) data size in typical output, which means this is an
improvement even without counting the new ability to extend the
information stored in each character cell.

Another beneficial side effect is that the insane format in which
Unicode was passed to front ends through do_text() has now been
rendered sane.

Testing is incomplete; this _may_ still have instabilities. Windows
and Unix front ends both seem to work as far as I've looked, but I
haven't yet looked very hard. The Mac front end I've edited (it
seemed obvious how to change it) but I can't compile or test it.

As an immediate functional effect, the terminal emulator now
supports full 32-bit Unicode to whatever extent the host platform
allows it to. For example, if you output a 4-or-more-byte UTF-8
character in Unix pterm, it will not display it properly, but it
will correctly paste it back out in a UTF8_STRING selection. Windows
is more restricted, sadly.

[originally from svn r4609]
2004-10-13 11:50:16 +00:00
Simon Tatham fb7dd5a255 At last! After much delay, much faffing back and forth, and much
enhancement and fiddling, I have now massaged Arabeyes' first patch
into a form I'm happy to check in. Phew.

[originally from svn r4236]
2004-05-22 10:36:50 +00:00
Ben Harris 19fe5968aa Missing part of my recent SCOANSI fix.
[originally from svn r3291]
2003-06-21 23:13:22 +00:00
Simon Tatham 5107780c54 pterm now uses the new uxsel module, so it's one step closer to
being able to be a PuTTY as well as a pterm. In the process I've
also moved icky things like actually reading from the pty fd and
printing the `terminated on signal' messages into pty.c where they
obviously should have been in the first place. Also there's been one
interesting repercussion in the terminal code: terminal.c's
from_backend now calls term_out() directly rather than expecting the
front end to call it afterwards. This has had the entertaining side
effect of fixing a Windows-specific bug whereby activity in a port
forwarding through a PuTTY with a blinking cursor caused the cursor
to blink to ON (!!!!). So, a surprisingly far-reaching checkin as it
turns out...

[originally from svn r3017]
2003-03-29 18:30:14 +00:00
Simon Tatham d36a4c3685 Introduced wrapper macros snew(), snewn() and sresize() for the
malloc functions, which automatically cast to the same type they're
allocating the size of. Should prevent any future errors involving
mallocing the size of the wrong structure type, and will also make
life easier if we ever need to turn the PuTTY core code from real C
into C++-friendly C. I haven't touched the Mac frontend in this
checkin because I couldn't compile or test it.

[originally from svn r3014]
2003-03-29 16:14:26 +00:00
Simon Tatham e9cc328501 Richard B's patch for resize behaviour. The scrollback now contains
a marker which defines everything before it as `permanent'
scrollback and everything after it as `temporary'; only temporary
scrollback lines are returned to the main screen when the window
height is increased. Screen clears mark the lines pushed into the
scrollback as permanent; so lines explicitly cleared off the screen
by ESC[2J are never returned to it by mistake. This patch also fixes
the incorrect state the primary screen is left in when the window is
resized while the alternate screen is active.

[originally from svn r2923]
2003-03-07 18:18:38 +00:00
Simon Tatham c5181dc498 Richard B's patch to push erased text into the scrollback on ESC[2J
clears, and also to temporarily push the primary screen contents
into the scrollback while the alternate screen is active and bring
it back afterwards.

[originally from svn r2910]
2003-03-06 12:51:12 +00:00
Ben Harris fe5f4c14f4 Richard's lazy-scrolling patch. This builds up scroll operations in a list,
combining adjacent ones for the same region, and runs them all in do_paint.
I'm not sure it's entirely right, but it works on my Mac in every case I've
tested.

[originally from svn r2763]
2003-02-01 12:26:33 +00:00
Simon Tatham b2374a64fd Deglobalise the Unicode module. Despite all my grand plans, I've
just done this the very simple way - bundle all the globals into a
data structure and pass pointers around. One particularly ugly wart
is that wc_to_mb now takes a pointer to this structure as an
argument (optional, may be NULL, and unused in any Unicode layer
that's even marginally less of a mess than the Windows one). I do
need to do this properly at some point, but for now this should just
about be adequate. As usual, the Mac port has not been updated.

[originally from svn r2592]
2003-01-14 18:28:23 +00:00
Simon Tatham 10eb26a7dd term->cfg is now a full copy of the Config structure, not a pointer;
and term_reconfig() now passes in a new structure which is copied
over the top. This means that the old and new structures can be
compared, and the _current_ as well as default states of auto wrap
mode, DEC origin mode, BCE, blinking text and character classes can
be conveniently reconfigured in mid-session without requiring a
terminal reset.

[originally from svn r2557]
2003-01-12 14:30:02 +00:00
Ben Harris 12081087e7 Improve support for non-colour displays by adding a mask of attributes to
ignore when breaking text into runs for display, and implement setting this
on Mac (other ports just use 0xffffffff).

We don't use DeviceLoop for this any more because Apple Technical Q&A
QA1024 says we shouldn't.  Unlike their example, we don't depend on the
Display Manager's being present either.

[originally from svn r2264]
2002-11-29 00:32:03 +00:00
Ben Harris 8280e645e4 Add a "Config *" argument to term_init(), and use that instead of the global
cfg throughout the terminal emulator.  Not tested in PuTTY and pterm, but they
just pass in &cfg.

[originally from svn r2248]
2002-11-23 19:01:01 +00:00
Simon Tatham 4756c15fc9 Yet more global-removal. The static variables in logging.c are now
absent, and also (I think) all the frontend request functions (such
as request_resize) take a context pointer, so that multiple windows
can be handled sensibly. I wouldn't swear to this, but I _think_
that only leaves the Unicode stuff as the last stubborn holdout.

[originally from svn r2147]
2002-10-26 12:58:13 +00:00
Simon Tatham 0b2523eeda Line discipline module now uses dynamically allocated data. Also
fixed one or two other minor problems.

[originally from svn r2141]
2002-10-26 10:16:19 +00:00
Simon Tatham 72ff571148 Major destabilisation, phase 2. This time it's the backends' turn:
each backend now stores all its internal variables in a big struct,
and each backend function gets a pointer to this struct passed to
it. This still isn't the end of the work - lots of subsidiary things
still use globals, notably all the cipher and compressor modules and
the X11 forwarding authentication stuff. But ssh.c itself has now
been transformed, and that was the really painful bit, so from here
on it all ought to be a sequence of much smaller and simpler pieces
of work.

[originally from svn r2127]
2002-10-25 11:30:33 +00:00
Simon Tatham bddc6d16ee Oops. Forgot to check in terminal.h from yesterday's work. There's
always one :-/

[originally from svn r2116]
2002-10-23 09:11:36 +00:00