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<title>[119587] trunk/dports/sysutils/screen</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="https://trac.macports.org/changeset/119587">119587</a></dd>
<dt>Author</dt> <dd>cal@macports.org</dd>
<dt>Date</dt> <dd>2014-05-01 13:26:43 -0700 (Thu, 01 May 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>screen: update to 4.2.1</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkdportssysutilsscreenPortfile">trunk/dports/sysutils/screen/Portfile</a></li>
<li><a href="#trunkdportssysutilsscreenfilespatchMakefilein">trunk/dports/sysutils/screen/files/patch-Makefile.in</a></li>
<li><a href="#trunkdportssysutilsscreenfilespatchconfighin">trunk/dports/sysutils/screen/files/patch-config.h.in</a></li>
<li><a href="#trunkdportssysutilsscreenfilespatchconfigure">trunk/dports/sysutils/screen/files/patch-configure</a></li>
<li><a href="#trunkdportssysutilsscreenfilespatchmaxargs">trunk/dports/sysutils/screen/files/patch-maxargs</a></li>
<li><a href="#trunkdportssysutilsscreenfilespatchscreenc">trunk/dports/sysutils/screen/files/patch-screen.c</a></li>
<li><a href="#trunkdportssysutilsscreenfilespatchwindowc">trunk/dports/sysutils/screen/files/patch-window.c</a></li>
<li><a href="#trunkdportssysutilsscreenfilespatchwindowsize">trunk/dports/sysutils/screen/files/patch-windowsize</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkdportssysutilsscreenfilespatchprocesscfixbogusstrncpysizediff">trunk/dports/sysutils/screen/files/patch-process.c-fix-bogus-strncpy-size.diff</a></li>
</ul>
<h3>Removed Paths</h3>
<ul>
<li><a href="#trunkdportssysutilsscreenfilespatchprocessc">trunk/dports/sysutils/screen/files/patch-process.c</a></li>
<li><a href="#trunkdportssysutilsscreenfilespatchwrp_vertical_split">trunk/dports/sysutils/screen/files/patch-wrp_vertical_split</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkdportssysutilsscreenPortfile"></a>
<div class="modfile"><h4>Modified: trunk/dports/sysutils/screen/Portfile (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/Portfile 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/Portfile 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -4,8 +4,7 @@
</span><span class="cx"> PortSystem 1.0
</span><span class="cx">
</span><span class="cx"> name screen
</span><del>-version 4.0.3
-revision 3
</del><ins>+version 4.2.1
</ins><span class="cx"> homepage http://www.gnu.org/software/screen/
</span><span class="cx"> description Screen manager with VT100/ANSI terminal emulation
</span><span class="cx"> long_description \
</span><span class="lines">@@ -18,11 +17,10 @@
</span><span class="cx"> virtual terminal and a copy-and-paste mechanism that allows moving text \
</span><span class="cx"> regions between windows.
</span><span class="cx"> categories sysutils
</span><del>-license GPL-2+
</del><ins>+license GPL-3+
</ins><span class="cx"> platforms darwin
</span><span class="cx"> maintainers nomaintainer
</span><del>-master_sites http://fresh.t-systems-sfr.com/unix/src/misc/ \
- ftp://ftp.uni-erlangen.de/pub/utilities/screen/ \
</del><ins>+master_sites gnu:${name} \
</ins><span class="cx"> http://www.cis.nctu.edu.tw/~is85005/dports/screen/:encoding \
</span><span class="cx"> http://www.cis.nctu.edu.tw/~is85005/dports/screen/r23776/:launchd_priv_header
</span><span class="cx">
</span><span class="lines">@@ -31,8 +29,8 @@
</span><span class="cx"> distfiles-append 18:encoding
</span><span class="cx">
</span><span class="cx"> checksums ${distname}${extract.suffix} \
</span><del>- rmd160 8c3903c1642ae30fd9d5706298919428552f7754 \
- sha256 78f0d5b1496084a5902586304d4a73954b2bfe33ea13edceecf21615c39e6c77 \
</del><ins>+ rmd160 20ddf4a33f91e60a42a31f02aa2a30a9c5cba9b5 \
+ sha256 5468545047e301d2b3579f9d9ce00466d14a7eec95ce806e3834a3d6b0b9b080 \
</ins><span class="cx"> 18 \
</span><span class="cx"> rmd160 bd143058417e1d4c040a2589fdfbf8f9203f0b4c \
</span><span class="cx"> sha256 4d4b674a61dab6bac9b4207307c5f020fa670fc3948c39e7ea93c7fb9dfb5174 \
</span><span class="lines">@@ -40,7 +38,10 @@
</span><span class="cx"> rmd160 ea1fb112d58a168c581ee58e761c26f7caed40ec \
</span><span class="cx"> sha256 dcd2786d82865fb10542c20e97d7052110f7ca9a551f2ab5628c607f20e2bb2f
</span><span class="cx">
</span><del>-patchfiles patch-maxargs patch-windowsize patch-Makefile.in
</del><ins>+patchfiles patch-maxargs \
+ patch-windowsize \
+ patch-Makefile.in \
+ patch-process.c-fix-bogus-strncpy-size.diff
</ins><span class="cx"> depends_lib port:ncurses
</span><span class="cx">
</span><span class="cx"> extract.only ${distname}${extract.suffix}
</span><span class="lines">@@ -49,11 +50,9 @@
</span><span class="cx"> }
</span><span class="cx"> configure.args --mandir=${prefix}/share/man \
</span><span class="cx"> --infodir=${prefix}/share/info \
</span><del>- --enable-locale \
</del><span class="cx"> --enable-telnet \
</span><span class="cx"> --enable-colors256 \
</span><span class="cx"> --enable-rxvt_osc
</span><del>-configure.env LIBS=-lncurses
</del><span class="cx">
</span><span class="cx"> post-destroot {
</span><span class="cx"> xinstall -m 644 ${workpath}/18 ${destroot}${prefix}/share/${name}/utf8encodings
</span><span class="lines">@@ -71,8 +70,10 @@
</span><span class="cx"> # The vproc_priv.h is the private header from launchd, used in Apple's 10.5 screen patches
</span><span class="cx"> # We copied the header file from http://launchd.macosforge.org/trac/browser/trunk/launchd/src/vproc_priv.h, r23776
</span><span class="cx"> distfiles-append vproc_priv.h:launchd_priv_header
</span><del>- post-extract { file copy ${distpath}/vproc_priv.h ${worksrcpath} }
- patchfiles-append patch-config.h.in patch-configure patch-pty.c patch-window.c patch-screen.c-leopard
</del><ins>+ post-extract {
+ file copy ${distpath}/vproc_priv.h ${worksrcpath}
+ }
+ patchfiles-append patch-config.h.in patch-configure patch-window.c patch-screen.c-leopard
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> if {${os.platform} eq "darwin" && ${os.major} >= 10 && ${os.major} <= 13} {
</span><span class="lines">@@ -80,16 +81,12 @@
</span><span class="cx"> # The vproc_priv.h is the private header from launchd, used in Apple's 10.6 screen patches
</span><span class="cx"> # We copied the header file from http://launchd.macosforge.org/trac/browser/trunk/launchd/src/vproc_priv.h, r23776
</span><span class="cx"> distfiles-append vproc_priv.h:launchd_priv_header
</span><del>- post-extract { file copy ${distpath}/vproc_priv.h ${worksrcpath} }
- patchfiles-append patch-config.h.in patch-configure patch-pty.c patch-window.c patch-screen.c patch-process.c
</del><ins>+ post-extract {
+ file copy ${distpath}/vproc_priv.h ${worksrcpath}
+ }
+ patchfiles-append patch-config.h.in patch-configure patch-window.c patch-screen.c
</ins><span class="cx"> }
</span><span class="cx">
</span><del>-variant vertical_split description {Apply vertical split patch} {
- patchfiles-append patch-wrp_vertical_split
-}
-
-default_variants +vertical_split
-
</del><span class="cx"> notes "
</span><span class="cx"> Any screens running before upgrading, will not be available, post-install.
</span><span class="cx"> "
</span></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchMakefilein"></a>
<div class="modfile"><h4>Modified: trunk/dports/sysutils/screen/files/patch-Makefile.in (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-Makefile.in 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-Makefile.in 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,6 +1,6 @@
</span><del>---- Makefile.in.orig 2009-01-21 11:55:43.000000000 +0800
-+++ Makefile.in 2009-01-21 11:56:33.000000000 +0800
-@@ -122,7 +122,7 @@
</del><ins>+--- Makefile.in 2014-04-26 12:58:35.000000000 +0200
++++ Makefile.in 2014-05-01 21:36:54.000000000 +0200
+@@ -134,7 +134,7 @@
</ins><span class="cx"> sh $(srcdir)/tty.sh tty.c
</span><span class="cx">
</span><span class="cx"> comm.h: comm.c comm.sh config.h
</span></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchconfighin"></a>
<div class="modfile"><h4>Modified: trunk/dports/sysutils/screen/files/patch-config.h.in (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-config.h.in 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-config.h.in 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,6 +1,6 @@
</span><del>---- config.h.in.orig 2009-01-21 11:58:54.000000000 +0800
-+++ config.h.in 2009-01-21 12:01:53.000000000 +0800
-@@ -208,14 +208,14 @@
</del><ins>+--- config.h.in 2014-04-26 12:58:46.000000000 +0200
++++ config.h.in 2014-05-01 21:36:54.000000000 +0200
+@@ -192,14 +192,14 @@
</ins><span class="cx"> * If screen is installed with permissions to update /etc/utmp (such
</span><span class="cx"> * as if it is installed set-uid root), define UTMPOK.
</span><span class="cx"> */
</span><span class="lines">@@ -17,7 +17,7 @@
</span><span class="cx">
</span><span class="cx"> /* Set LOGOUTOK to one (1)
</span><span class="cx"> * if you want the user to be able to log her/his windows out.
</span><del>-@@ -231,7 +231,7 @@
</del><ins>+@@ -215,7 +215,7 @@
</ins><span class="cx"> * Set CAREFULUTMP to one (1) if you want that users have at least one
</span><span class="cx"> * window per screen session logged in.
</span><span class="cx"> */
</span></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchconfigure"></a>
<div class="modfile"><h4>Modified: trunk/dports/sysutils/screen/files/patch-configure (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-configure 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-configure 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,6 +1,6 @@
</span><del>---- configure.orig 2009-01-21 12:02:42.000000000 +0800
-+++ configure 2009-01-21 12:04:58.000000000 +0800
-@@ -5572,7 +5572,7 @@
</del><ins>+--- configure 2014-04-26 12:58:46.000000000 +0200
++++ configure 2014-05-01 21:36:54.000000000 +0200
+@@ -5413,7 +5413,7 @@
</ins><span class="cx">
</span><span class="cx"> #include <time.h> /* to get time_t on SCO */
</span><span class="cx"> #include <sys/types.h>
</span><span class="lines">@@ -9,7 +9,7 @@
</span><span class="cx"> #include <utmpx.h>
</span><span class="cx"> #define utmp utmpx
</span><span class="cx"> #else
</span><del>-@@ -5581,6 +5581,10 @@
</del><ins>+@@ -5422,6 +5422,10 @@
</ins><span class="cx"> #ifdef __hpux
</span><span class="cx"> #define pututline _pututline
</span><span class="cx"> #endif
</span></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchmaxargs"></a>
<div class="modfile"><h4>Modified: trunk/dports/sysutils/screen/files/patch-maxargs (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-maxargs 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-maxargs 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,11 +1,11 @@
</span><del>---- ansi.c.orig Mon Sep 8 16:24:44 2003
-+++ ansi.c
-@@ -559,7 +559,7 @@ register int len;
- {
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
-- if (curr->w_NumArgs < MAXARGS)
-+ if (curr->w_NumArgs >= 0 && curr->w_NumArgs < MAXARGS)
</del><ins>+--- ansi.c.orig 2014-05-01 12:51:14.000000000 +0200
++++ ansi.c 2014-05-01 21:33:29.000000000 +0200
+@@ -568,7 +568,7 @@
</ins><span class="cx"> {
</span><del>- if (curr->w_args[curr->w_NumArgs] < 100000000)
- curr->w_args[curr->w_NumArgs] =
</del><ins>+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+- if (curr->w_NumArgs < MAXARGS)
++ if (curr->w_NumArgs >= 0 && curr->w_NumArgs < MAXARGS)
+ {
+ if (curr->w_args[curr->w_NumArgs] < 100000000)
+ curr->w_args[curr->w_NumArgs] =
</ins></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchprocessc"></a>
<div class="delfile"><h4>Deleted: trunk/dports/sysutils/screen/files/patch-process.c (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-process.c 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-process.c 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,13 +0,0 @@
</span><del>-diff -r -u screen-4.0.3.orig/process.c screen-4.0.3/process.c
---- process.c 2008-07-06 23:40:16.000000000 -0700
-+++ process.c 2008-07-06 23:47:55.000000000 -0700
-@@ -5466,7 +5466,7 @@
- *buf = 0;
- return;
- }
-- act.nr = (int)data;
-+ act.nr = (int)(intptr_t)data;
- act.args = noargs;
- act.argl = 0;
- DoAction(&act, -1);
-
</del></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchprocesscfixbogusstrncpysizediff"></a>
<div class="addfile"><h4>Added: trunk/dports/sysutils/screen/files/patch-process.c-fix-bogus-strncpy-size.diff (0 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-process.c-fix-bogus-strncpy-size.diff (rev 0)
+++ trunk/dports/sysutils/screen/files/patch-process.c-fix-bogus-strncpy-size.diff 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -0,0 +1,12 @@
</span><ins>+Reported upstream: https://savannah.gnu.org/bugs/?42257
+--- process.c.orig 2014-05-01 22:01:18.000000000 +0200
++++ process.c 2014-05-01 22:01:50.000000000 +0200
+@@ -6282,7 +6282,7 @@
+ else
+ { strcpy(p = i->pw2, "\377"); l = sizeof(i->pw2) - 1; }
+ if (buf && len)
+- strncpy(p, buf, 1 + (l < len) ? l : len);
++ strncpy(p, buf, 1 + ((l < len) ? l : len));
+ if (!*i->name)
+ Input("Screen User: ", sizeof(i->name) - 1, INP_COOKED, su_fin, (char *)i, 0);
+ else if (!*i->pw1)
</ins></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchscreenc"></a>
<div class="modfile"><h4>Modified: trunk/dports/sysutils/screen/files/patch-screen.c (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-screen.c 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-screen.c 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,8 +1,8 @@
</span><del>---- screen.c 2003-09-08 07:26:41.000000000 -0700
-+++ screen.c 2009-02-13 12:05:05.000000000 -0800
-@@ -101,6 +101,11 @@
</del><ins>+--- screen.c 2014-04-26 18:22:09.000000000 +0200
++++ screen.c 2014-05-01 21:36:54.000000000 +0200
+@@ -109,6 +109,11 @@
</ins><span class="cx">
</span><del>- #include "logfile.h" /* islogfile, logfflush */
</del><ins>+ #include "logfile.h" /* islogfile, logfflush */
</ins><span class="cx">
</span><span class="cx"> +#ifdef __APPLE__
</span><span class="cx"> +#include <vproc.h>
</span><span class="lines">@@ -12,8 +12,8 @@
</span><span class="cx"> #ifdef DEBUG
</span><span class="cx"> FILE *dfp;
</span><span class="cx"> #endif
</span><del>-@@ -929,6 +934,16 @@
- Panic(0, "No $SCREENDIR with multi screens, please.");
</del><ins>+@@ -1046,6 +1051,16 @@
+ Panic(0, "No $SCREENDIR with multi screens, please.");
</ins><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="cx"> +#ifdef __APPLE__
</span><span class="lines">@@ -29,7 +29,7 @@
</span><span class="cx"> #ifdef MULTIUSER
</span><span class="cx"> if (multiattach)
</span><span class="cx"> {
</span><del>-@@ -1211,6 +1226,11 @@
</del><ins>+@@ -1314,6 +1329,11 @@
</ins><span class="cx"> freopen("/dev/null", "w", stderr);
</span><span class="cx"> debug("-- screen.back debug started\n");
</span><span class="cx">
</span><span class="lines">@@ -41,4 +41,3 @@
</span><span class="cx"> /*
</span><span class="cx"> * This guarantees that the session owner is listed, even when we
</span><span class="cx"> * start detached. From now on we should not refer to 'LoginName'
</span><del>-
</del></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchwindowc"></a>
<div class="modfile"><h4>Modified: trunk/dports/sysutils/screen/files/patch-window.c (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-window.c 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-window.c 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,6 +1,6 @@
</span><del>---- window.c.orig 2009-01-21 12:09:29.000000000 +0800
-+++ window.c 2009-01-21 12:14:04.000000000 +0800
-@@ -25,6 +25,7 @@
</del><ins>+--- window.c 2014-04-26 12:58:35.000000000 +0200
++++ window.c 2014-05-01 21:36:54.000000000 +0200
+@@ -33,6 +33,7 @@
</ins><span class="cx"> #include <sys/stat.h>
</span><span class="cx"> #include <signal.h>
</span><span class="cx"> #include <fcntl.h>
</span><span class="lines">@@ -8,8 +8,8 @@
</span><span class="cx"> #ifndef sun
</span><span class="cx"> # include <sys/ioctl.h>
</span><span class="cx"> #endif
</span><del>-@@ -1387,6 +1388,38 @@
- return pid;
</del><ins>+@@ -1660,6 +1661,38 @@
+ return r;
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> +#ifdef RUN_LOGIN
</span><span class="lines">@@ -45,5 +45,5 @@
</span><span class="cx"> +#endif /* RUN_LOGIN */
</span><span class="cx"> +
</span><span class="cx"> void
</span><del>- execvpe(prog, args, env)
- char *prog, **args, **env;
</del><ins>+ FreePseudowin(w)
+ struct win *w;
</ins></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchwindowsize"></a>
<div class="modfile"><h4>Modified: trunk/dports/sysutils/screen/files/patch-windowsize (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-windowsize 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-windowsize 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,8 +1,8 @@
</span><del>---- resize.c.orig Mon Sep 8 16:26:31 2003
-+++ resize.c
-@@ -682,6 +682,17 @@ int wi, he, hi;
- if (wi == 0)
- he = hi = 0;
</del><ins>+--- resize.c 2014-04-26 12:58:35.000000000 +0200
++++ resize.c 2014-05-01 21:36:54.000000000 +0200
+@@ -678,6 +678,17 @@
+ he = 1000;
+ }
</ins><span class="cx">
</span><span class="cx"> + if (wi > 1000)
</span><span class="cx"> + {
</span></span></pre></div>
<a id="trunkdportssysutilsscreenfilespatchwrp_vertical_split"></a>
<div class="delfile"><h4>Deleted: trunk/dports/sysutils/screen/files/patch-wrp_vertical_split (119586 => 119587)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/dports/sysutils/screen/files/patch-wrp_vertical_split 2014-05-01 18:29:01 UTC (rev 119586)
+++ trunk/dports/sysutils/screen/files/patch-wrp_vertical_split 2014-05-01 20:26:43 UTC (rev 119587)
</span><span class="lines">@@ -1,1256 +0,0 @@
</span><del>---- comm.c.orig 2003-09-08 14:25:08.000000000 +0000
-+++ comm.c 2006-07-07 02:39:24.000000000 +0000
-@@ -309,6 +309,7 @@ struct comm comms[RC_LAST + 1] =
- { "vbellwait", ARGS_1 },
- { "verbose", ARGS_01 },
- { "version", ARGS_0 },
-+ { "vert_split", NEED_DISPLAY|ARGS_0 },
- { "wall", NEED_DISPLAY|ARGS_1},
- { "width", ARGS_0123 },
- { "windowlist", NEED_DISPLAY|ARGS_012 },
---- display.c.orig 2003-12-05 13:45:41.000000000 +0000
-+++ display.c 2006-07-07 02:39:26.000000000 +0000
-@@ -476,65 +476,306 @@ struct canvas *cv;
- free(cv);
- }
-
-+struct canvas *
-+get_new_canvas(target)
-+struct canvas *target;
-+{ /** Allocate a new canvas, and assign it characteristics
-+ equal to those of target. */
-+ struct canvas *cv;
-+
-+ if ((cv = (struct canvas *) calloc(1, sizeof *cv)) == 0)
-+ return NULL;
-+
-+ cv -> c_xs = target -> c_xs;
-+ cv -> c_xe = target -> c_xe;
-+ cv -> c_ys = target -> c_ys;
-+ cv -> c_ye = target -> c_ye;
-+ cv -> c_xoff = target -> c_xoff;
-+ cv -> c_yoff = target -> c_yoff;
-+ cv -> c_display = target -> c_display;
-+ cv -> c_vplist = 0;
-+ cv -> c_captev.type = EV_TIMEOUT;
-+ cv -> c_captev.data = (char *) cv;
-+ cv -> c_captev.handler = cv_winid_fn;
-+
-+ cv -> c_blank.l_cvlist = cv;
-+ cv -> c_blank.l_width = cv->c_xe - cv->c_xs + 1;
-+ cv -> c_blank.l_height = cv->c_ye - cv->c_ys + 1;
-+ cv -> c_blank.l_x = cv->c_blank.l_y = 0;
-+ cv -> c_blank.l_layfn = &BlankLf;
-+ cv -> c_blank.l_data = 0;
-+ cv -> c_blank.l_next = 0;
-+ cv -> c_blank.l_bottom = &cv->c_blank;
-+ cv -> c_blank.l_blocking = 0;
-+ cv -> c_layer = &cv->c_blank;
-+ cv -> c_lnext = 0;
-+
-+ cv -> c_left = target -> c_left;
-+ cv -> c_right = target -> c_right;
-+ cv -> c_above = target -> c_above;
-+ cv -> c_below = target -> c_below;
-+
-+ return cv;
-+}
-+
- int
--AddCanvas()
--{
-- int hh, h, i, j;
-- struct canvas *cv, **cvpp;
-+share_limits( type, cv0, cv1)
-+int type; /* HORIZONTAL or VERTICAL */
-+struct canvas *cv0; /* canvas to compare against. */
-+struct canvas *cv1; /* canvas to compare against. */
-+{ /** Return non-zero if the two canvasses share limits.
-+ (ie, their horizontal or veritcal boundaries are the same)
-+ */
-+ switch (type) {
-+ case HORIZONTAL:
-+ return cv0 -> c_xs == cv1 -> c_xs && cv0->c_xe == cv1 -> c_xe;
-+ case VERTICAL:
-+ return cv0 -> c_ys == cv1 -> c_ys && cv0->c_ye == cv1 -> c_ye;
-+ }
-+ ASSERT(0);
-+ return 0;
-+}
-
-- for (cv = D_cvlist, j = 0; cv; cv = cv->c_next)
-- j++;
-- j++; /* new canvas */
-- h = D_height - (D_has_hstatus == HSTATUS_LASTLINE);
-- if (h / j <= 1)
-- return -1;
-+int
-+compute_region(type, a, focus, list)
-+int type; /* 0 - horizontal, 1 - vertical */
-+struct screen_region *a; /* Return value. */
-+struct canvas *focus; /* Canvas to compute around. */
-+struct canvas *list; /* List of all canvasses. */
-+{ /** Find the start and end of the screen region.*/
-+ /*
-+ I'm using the term 'region' here differently
-+ than elsewhere. Elsewhere, 'region' is synonymous
-+ with 'canvas', but I am using it to denote
-+ a collection of related canvasses.
-
-- for (cv = D_cvlist; cv; cv = cv->c_next)
-- if (cv == D_forecv)
-+ Suppose the screen currently looks
-+ like this:
-+ ---------------------------
-+ | 0 | 1 | 2 |
-+ ---------------------------
-+ | 3 | 4 | 5 |
-+ ---------------------------
-+ | 6 |
-+ ---------------------------
-+ | 7 | 8 | 9 |
-+ ---------------------------
-+ Where there are 10 entries in D_cvlist.
-+ Canvasses 0,1,2 are in the same region, as
-+ are cavasses 1 and 4. We need to be careful not to
-+ lump 1 and 4 together w/8. The
-+ type of the region containing 0,1,2 is
-+ VERTICAL, since each canvas is created
-+ via a vertical split.
-+
-+ Throughout, I'm assuming that canvasses
-+ are created so that any region will
-+ be contiguous in D_cvlist.
-+
-+ Note: this was written before the screen
-+ orientation members (c_left, c_above, c_below,
-+ c_right) were added to the struct canvas.
-+ Might want to rewrite this to use those.
-+
-+ Written by Bill Pursell, 23/12/2005
-+ */
-+
-+ struct canvas *cv; /* Entry in list. */
-+ int seen_focus; /* Flag used when walking the list. */
-+
-+ seen_focus = 0;
-+ a->count = 0;
-+ a->type = type;
-+
-+ if (type == HORIZONTAL) {
-+ a->xs = focus -> c_xs;
-+ a->xe = focus -> c_xe;
-+ a->ys = -1;
-+ }
-+ if (type == VERTICAL) {
-+ a->ys = focus -> c_ys;
-+ a->ye = focus -> c_ye;
-+ a->xs = -1;
-+ }
-+ /* Count the canvasses in the same region as the
-+ canvas with the focus, and find the limits of the region. */
-+ for (cv = list; cv; cv = cv->c_next) {
-+ if (cv == focus)
-+ seen_focus = 1;
-+ if (share_limits( type, cv, focus)) {
-+ debug2("cv = %x %s\n", cv, (cv == focus)? "FORE":"");
-+ debug2("x range: %d - %d\n", cv->c_xs, cv->c_xe);
-+ debug2("y range: %d - %d\n", cv->c_ys, cv->c_ye);
-+ switch (type) {
-+ case HORIZONTAL :
-+ if (a->ys == -1) {
-+ a->ys = cv -> c_ys;
-+ a->start = cv;
-+ }
-+ a->ye = cv -> c_ye;
- break;
-- ASSERT(cv);
-- cvpp = &cv->c_next;
-+ case VERTICAL:
-+ if (a->xs == -1) {
-+ a->xs = cv -> c_xs;
-+ a->start = cv;
-+ }
-+ a->xe = cv -> c_xe;
-+ break;
-+ }
-
-- if ((cv = (struct canvas *)calloc(1, sizeof *cv)) == 0)
-- return -1;
-+ a->end = cv;
-+ a->count++;
-+ }
-+ if (!share_limits(type, cv, focus) || cv -> c_next == NULL) {
-+ if (seen_focus) {
-+ debug2("x range of Region: %d-%d\n", a->xs, a->xe);
-+ debug2("y range of Region: %d-%d\n", a->ys, a->ye);
-+ break;
-+ }
-+ else {
-+ switch(type) {
-+ case HORIZONTAL: a->ys = -1; break;
-+ case VERTICAL : a->xs = -1; break;
-+ }
-+ a->count = 0;
-+ }
-+ }
-+ }
-
-- cv->c_xs = 0;
-- cv->c_xe = D_width - 1;
-- cv->c_ys = 0;
-- cv->c_ye = D_height - 1;
-- cv->c_xoff = 0;
-- cv->c_yoff = 0;
-- cv->c_display = display;
-- cv->c_vplist = 0;
-- cv->c_captev.type = EV_TIMEOUT;
-- cv->c_captev.data = (char *)cv;
-- cv->c_captev.handler = cv_winid_fn;
-+ switch (type) {
-+ case HORIZONTAL:
-+ a->expanse = a->ye - a->ys + 1;
-+ ASSERT(a->expanse <= D_height - (D_has_hstatus == HSTATUS_LASTLINE));
-+ break;
-+ case VERTICAL:
-+ a->expanse = a->xe - a->xs + 1;
-+ ASSERT(a->expanse <= D_width);
-+ break;
-+ }
-+ ASSERT(seen_focus);
-+}
-
-- cv->c_blank.l_cvlist = cv;
-- cv->c_blank.l_width = cv->c_xe - cv->c_xs + 1;
-- cv->c_blank.l_height = cv->c_ye - cv->c_ys + 1;
-- cv->c_blank.l_x = cv->c_blank.l_y = 0;
-- cv->c_blank.l_layfn = &BlankLf;
-- cv->c_blank.l_data = 0;
-- cv->c_blank.l_next = 0;
-- cv->c_blank.l_bottom = &cv->c_blank;
-- cv->c_blank.l_blocking = 0;
-- cv->c_layer = &cv->c_blank;
-- cv->c_lnext = 0;
-+void
-+reset_region_types(region, type)
-+struct screen_region *region;
-+int type;
-+{ /** Set c_type of all the canvasses in the region to type. */
-
-- cv->c_next = *cvpp;
-- *cvpp = cv;
-+ struct canvas *cv;
-
-- i = 0;
-- for (cv = D_cvlist; cv; cv = cv->c_next)
-- {
-- hh = h / j-- - 1;
-- cv->c_ys = i;
-- cv->c_ye = i + hh - 1;
-- cv->c_yoff = i;
-- i += hh + 1;
-- h -= hh + 1;
-+ for (cv = region->start; cv != region->end->c_next; cv = cv->c_next) {
-+ #ifdef DEBUG
-+ switch(type) {
-+ case HORIZONTAL:
-+ ASSERT (cv->c_xs == region -> xs && cv->c_xe == region -> xe);
-+ break;
-+ case VERTICAL:
-+ ASSERT (cv->c_ys == region -> ys && cv->c_ye == region -> ye);
-+ break;
-+ default:
-+ ASSERT(0);
-+ }
-+ #endif
-+ cv -> c_type = type;
- }
-+}
-+
-+void
-+debug_print_canvas(cv)
-+struct canvas *cv;
-+{ /** Print cv to the debug file. */
-+#ifdef DEBUG
-+ debug2("%x %s\n", cv, (cv == D_forecv)?" HAS FOCUS":"");
-+ debug2(" above: %x below: %x\n", cv->c_above, cv->c_below);
-+ debug2(" left: %x right: %x\n", cv->c_left, cv->c_right);
-+ debug3(" x range: %2d-%2d, xoff = %d\n",
-+ cv->c_xs, cv->c_xe, cv->c_xoff);
-+ debug3(" y range: %2d-%2d yoff = %d\n",
-+ cv->c_ys, cv->c_ye, cv->c_yoff);
-+ debug2(" next: %x type: %d\n", cv->c_next, cv->c_type);
-+#endif
-+}
-+
-+void
-+debug_print_all_canvasses(header)
-+char *header;
-+{ /** Print the dimensions of all the canvasses
-+ in the current display to the debug file. Precede
-+ with a line containing the header message. */
-+ #ifdef DEBUG
-+ struct canvas *cv;
-+ char message[BUFSIZ];
-+
-+ sprintf(message, "%10s %5d: ",__FILE__ , __LINE__);
-+ strcat (message, header);
-+ fprintf(dfp, message);
-+ fflush(dfp);
-+ for (cv = D_cvlist; cv; cv = cv->c_next) {
-+ debug_print_canvas(cv);
-+ }
-+ #endif
-+ return;
-+}
-+
-+set_internal_orientation(region)
-+struct screen_region *region;
-+{ /** Set the orientation for canvasses inside the region. */
-+
-+ struct canvas *cv;
-+
-+ for (cv = region -> start; cv != region -> end; cv = cv->c_next) {
-+ ASSERT (cv -> c_type == region -> type);
-+ switch (region->type) {
-+ case VERTICAL:
-+ cv -> c_right = cv -> c_next;
-+ cv -> c_next -> c_left = cv;
-+ break;
-+ case HORIZONTAL:
-+ cv -> c_below = cv -> c_next;
-+ cv -> c_next -> c_above = cv;
-+ break;
-+ }
-+ }
-+}
-+
-+
-+int
-+AddCanvas(type)
-+int type; /* Horizontal or Vertical. */
-+{ /** Add a new canvas, via a split. */
-+
-+ struct canvas *cv; /* Index into D_cvlist. */
-+ struct screen_region vr; /* Canvasses in the same row/column as the
-+ canvas with the focus. */
-+
-+ compute_region(type, &vr, D_forecv, D_cvlist);
-+
-+ /* Return if the region isn't big enough to split. */
-+ if (vr.expanse / vr.count <= 1)
-+ return -1;
-+
-+ /* Allocate a new canvas. */
-+ if ( (cv = get_new_canvas(D_forecv)) == NULL)
-+ return -1;
-+
-+ /* Set the type. */
-+ cv -> c_type = D_forecv -> c_type = type;
-+
-+ /* Increment the canvas count to account for the one we will add. */
-+ vr.count++;
-+
-+ debug_print_all_canvasses("AddCanvas start.\n");
-+
-+ /* Insert the new canvas after the current foreground. */
-+ cv -> c_next = D_forecv->c_next;
-+ D_forecv -> c_next = cv;
-+ if (vr.end == D_forecv)
-+ vr.end = cv;
-+
-+ set_internal_orientation(&vr);
-+ equalize_canvas_dimensions(&vr);
-+
-+ debug_print_all_canvasses("AddCanvas end.\n");
-
- RethinkDisplayViewports();
- ResizeLayersToCanvases();
-@@ -542,67 +783,595 @@ AddCanvas()
- }
-
- void
--RemCanvas()
-+get_endpoints(cv, start, end, off)
-+struct canvas *cv;
-+int **start;
-+int **end;
-+int **off;
-+{ /** Set *start, *end, and *off appropriate with cv->c_type. */
-+ switch (cv->c_type) {
-+ case HORIZONTAL:
-+ if (start) *start = &cv -> c_ys;
-+ if (end) *end = &cv -> c_ye;
-+ if (off) *off = &cv -> c_yoff;
-+ break;
-+ case VERTICAL:
-+ if (start) *start = &cv -> c_xs;
-+ if (end) *end = &cv -> c_xe;
-+ if (off) *off = &cv -> c_xoff;
-+ break;
-+ default: ASSERT(0);
-+ }
-+}
-+
-+#define MIN_HEIGHT 1
-+#define MIN_WIDTH 5
-+
-+int
-+adjust_canvas_dimensions(vr, target, amount)
-+struct screen_region *vr;
-+struct canvas *target;
-+int amount;
-+{ /** Modify the size of target by amount. */
-+
-+ /* Other canvasses in the region will gain or lose
-+ space to accomodate the change. Return
-+ the number of rows/columns by which the size
-+ of target is succesfully enlarged. (if amount <= 0,
-+ return 0) */
-+
-+ struct canvas *this; /* for walking the list. */
-+ struct canvas *prev; /* for walking the list backwards. */
-+ int adjusted; /* Amount already re-allocated. */
-+ int *start, *end, *off; /* c->c_{x,y}s, c->c_{x,y}e, and c->c_{x,y}off */
-+ int minimum, space;
-+
-+ debug1("adjust: amount = %d\n", amount);
-+ debug_print_all_canvasses("ADJUST \n");
-+
-+ ASSERT(vr->count > 1);
-+
-+ if (amount == 0)
-+ return 0;
-+
-+ switch(vr->type) {
-+ case HORIZONTAL: minimum = MIN_HEIGHT; space = 2; break;
-+ case VERTICAL: minimum = MIN_WIDTH; space = 1; break;
-+ default: ASSERT(0);
-+ }
-+
-+ if (amount < 0) {
-+ debug_print_all_canvasses("PREADJUST\n");
-+
-+ get_endpoints(target, &start, &end, &off);
-+ if (target == vr -> start) {
-+ *end += amount;
-+
-+ if (*end < *start + minimum)
-+ *end = *start + minimum;
-+
-+ get_endpoints(target->c_next, &start, 0, &off);
-+ *start = *off = *end + space;
-+
-+ debug_print_all_canvasses("POSTADJUST\n\n");
-+ }
-+ else {
-+ for (prev = vr->start; prev->c_next != target; prev = prev->c_next)
-+ ;
-+ ASSERT(prev && prev -> c_next == target);
-+
-+ *start -= amount;
-+ if (*start > *end - minimum)
-+ *start = *end - minimum;
-+ get_endpoints(prev, 0, &end, 0);
-+ *end = *start - space;
-+ }
-+ return 0;
-+ }
-+
-+ ASSERT (amount > 0);
-+
-+ /* Reallocate space from canvasses below target. */
-+ this = vr -> end;
-+ adjusted = 0;
-+ while ( adjusted < amount) {
-+ int this_amount; /* amount this canvas can yield. */
-+ struct canvas *cv; /* For walking lists. */
-+
-+ if (this == target)
-+ break;
-+
-+ get_endpoints(this, &start, &end, 0);
-+ switch (vr->type) {
-+ case HORIZONTAL: this_amount = *end - *start - MIN_HEIGHT; break;
-+ case VERTICAL: this_amount = *end - *start - MIN_WIDTH; break;
-+ default: ASSERT(0);
-+ }
-+
-+ if (this_amount > amount - adjusted)
-+ this_amount = amount - adjusted;
-+
-+ debug("target:\n");
-+ debug_print_canvas(target);
-+
-+ debug("this:\n");
-+ debug_print_canvas(this);
-+
-+ /* Move all canvasses between target and this by this_amount. */
-+ for (cv = target; cv != this; cv = cv -> c_next) {
-+ debug1("this_amount = %d\n", this_amount);
-+ debug_print_canvas(cv);
-+
-+ get_endpoints(cv, &start, &end, 0);
-+ *end += this_amount;
-+ get_endpoints(cv->c_next, &start, &end, &off);
-+ *start += this_amount;
-+ *off = *start;
-+ }
-+ adjusted += this_amount;
-+ debug1("adjusted: %d\n", adjusted);
-+
-+ debug("target:\n");
-+ debug_print_canvas(target);
-+
-+ debug("this:\n");
-+ debug_print_canvas(this);
-+
-+
-+ /* Get the previous canvas. TODO: include back pointers
-+ in struct canvas(?). */
-+ for (prev = vr->start; prev->c_next != this; prev = prev->c_next)
-+ ASSERT(prev);
-+ this = prev;
-+ }
-+ debug1("adjusted = %d\n", adjusted);
-+ if (adjusted == amount || target == vr->start)
-+ return adjusted;
-+
-+ /* Re-allocate space from canvasses above target. */
-+ ASSERT(this == target);
-+ for (prev = vr->start; prev->c_next != this; prev = prev->c_next)
-+ ASSERT(prev);
-+ this = prev;
-+
-+ while (adjusted < amount) {
-+ int this_amount; /* amount this canvas can yield. */
-+ struct canvas *cv; /* For walking lists. */
-+
-+ get_endpoints(this, &start, &end, 0);
-+ switch (vr->type) {
-+ case HORIZONTAL: this_amount = *end - *start - MIN_HEIGHT; break;
-+ case VERTICAL: this_amount = *end - *start - MIN_WIDTH; break;
-+ default: ASSERT(0);
-+ }
-+
-+ if (this_amount > amount - adjusted)
-+ this_amount = amount - adjusted;
-+
-+ /* Move all canvasses between this and target by this_amount. */
-+ for (cv = this; cv != target; cv = cv -> c_next) {
-+ ASSERT(cv);
-+ debug1("this_amount = %d\n", this_amount);
-+ debug_print_canvas(cv);
-+ debug("NEXT:\n");
-+ debug_print_canvas(cv->c_next);
-+
-+ debug("getend:\n");
-+ get_endpoints(cv, &start, &end, 0);
-+ ASSERT(end && start );
-+ ASSERT(start);
-+ ASSERT(*end >= this_amount);
-+ *end -= this_amount;
-+ ASSERT(*end > *start);
-+
-+ debug("getend:\n");
-+ ASSERT(cv->c_next);
-+ get_endpoints(cv->c_next, &start, &end, &off);
-+ ASSERT(start && off);
-+ ASSERT(*start >= this_amount);
-+ ASSERT(*start == *off);
-+ *start -= this_amount;
-+ *off = *start;
-+
-+ debug("adjusted\n");
-+ debug_print_canvas(cv);
-+ debug("NEXT:\n");
-+ debug_print_canvas(cv->c_next);
-+ debug("\n");
-+ }
-+ adjusted += this_amount;
-+
-+ if (this == vr->start)
-+ break;
-+
-+ for (prev = vr->start; prev->c_next != this; prev = prev->c_next)
-+ ASSERT(prev);
-+ this = prev;
-+ }
-+ debug1("returning: %d\n", adjusted);
-+ return adjusted;
-+}
-+
-+void
-+equalize_canvas_dimensions(vr)
-+struct screen_region *vr;
-+{ /** Reset the size of each canvas in the region. */
-+
-+ struct canvas *cv; /* for walking the list. */
-+ int this_size; /* new size of cv */
-+ int this_start; /* Start coordinate for current canvas. */
-+
-+ debug("equalize\n");
-+
-+ debug2("vr start = %#x, vr end = %#x\n", vr->start, vr->end);
-+
-+ switch(vr->type) {
-+ case VERTICAL: this_start = vr->xs; break;
-+ case HORIZONTAL: this_start = vr->ys; break;
-+ }
-+
-+ for (cv = vr->start ; ; cv = cv->c_next) {
-+ ASSERT(cv);
-+
-+ /* For the horizontal split, leave space for a status line. */
-+ this_size = vr->expanse / vr->count - (vr->type == HORIZONTAL);
-+
-+ /* Give any additional available rows/columns to the foreground. */
-+ if (cv == D_forecv)
-+ this_size += vr->expanse % vr->count;
-+
-+ debug_print_canvas(cv);
-+ debug2("cv type = %d, vr type = %d\n", cv->c_type, vr->type);
-+ ASSERT(cv -> c_type == vr->type);
-+
-+ switch(vr->type) {
-+ case VERTICAL:
-+ cv -> c_xs = cv -> c_xoff = this_start;
-+ cv -> c_xe = this_start + this_size - 1;
-+ this_start += this_size;
-+ break;
-+ case HORIZONTAL:
-+ if (cv == vr->end && cv->c_ye == D_height-1-
-+ (D_has_hstatus == HSTATUS_LASTLINE))
-+ this_size += 1; /* Don't make space for status line
-+ in the bottom region (it already has one). */
-+
-+ cv -> c_ys = cv -> c_yoff = this_start;
-+ cv -> c_ye = this_start + this_size - 1;
-+ this_start += this_size + 1; /* add one for status line. */
-+ break;
-+ }
-+ if (cv == vr->end)
-+ break;
-+ }
-+}
-+
-+void
-+remove_canvas_from_list(list, cv)
-+struct canvas **list;
-+struct canvas *cv;
-+{ /** Prune cv from the list. Does not free cv.*/
-+
-+ struct canvas *pred; /* Predecssor of cv in list. */
-+
-+ if (cv == *list ) {
-+ *list = cv -> c_next;
-+ }
-+ else {
-+ /* Find the predecessor of cv. */
-+ for (pred = *list; pred->c_next != cv; pred = pred->c_next)
-+ ASSERT(pred);
-+
-+ pred -> c_next = cv -> c_next;
-+ }
-+}
-+
-+void
-+redirect_pointers(list, old, new)
-+struct canvas *list;
-+struct canvas *old;
-+struct canvas *new;
-+{ /** For each canvas in the list, change any
-+ of its screen orientation pointers from old to new.
-+ Canvasses are not allowed to be self-referential,
-+ so set such pointers to NULL.
-+ */
-+ struct canvas *cv;
-+ for (cv=list; cv; cv = cv->c_next) {
-+ if (cv -> c_left == old)
-+ cv -> c_left = (cv==new)?NULL:new;
-+ if (cv -> c_above == old)
-+ cv -> c_above = (cv==new)?NULL:new;
-+ if (cv -> c_right == old)
-+ cv -> c_right = (cv==new)?NULL:new;
-+ if (cv -> c_below == old)
-+ cv -> c_below = (cv==new)?NULL:new;
-+ }
-+}
-+
-+struct canvas *
-+squeeze(list, target, direction, distance)
-+struct canvas *list; /* List of canvasses to resize. */
-+struct canvas *target; /* Canvas in the list being removed. */
-+enum directions direction;
-+int distance; /* Amount to squeeze. */
-+{ /** Resize canvasses in the list so that target
-+ is shrunk by distance and other canvasses are grown in the
-+ specified direction. If distance is 0, target
-+ is destroyed, and the value returned is
-+ the earliest canvas in the list that is grown.
-+
-+ If distance > 0, the value returned is an int,
-+ giving the amount actually sqeezed. (This needs
-+ re-writing!)
-+ (This becomes the new region head for the region
-+ orphaned by target.)
-+
-+ TODO: this currently only implements distance == 0;
-+ */
-+
-+ struct canvas *ret; /* The return value.*/
-+ struct canvas *cv; /* For walking the list.*/
-+
-+ ret = NULL;
-+
-+ if (distance == 0) {
-+ for (cv = list; cv; cv = cv->c_next) {
-+ int *cv_coord, *cv_off, targ_coord;
-+ struct canvas **cv_orient, *targ_orient;
-+
-+ switch (direction) {
-+ case RIGHT:
-+ cv_orient = &cv->c_right;
-+ cv_coord = &cv->c_xe;
-+ cv_off = 0;
-+ targ_coord = target->c_xe;
-+ targ_orient = target->c_right;
-+ break;
-+ case LEFT:
-+ cv_orient = &cv->c_left;
-+ cv_coord = &cv->c_xs;
-+ cv_off = &cv->c_xoff;
-+ targ_coord = target->c_xs;
-+ targ_orient = target->c_left;
-+ break;
-+ case UP:
-+ cv_orient = &cv->c_above;
-+ cv_coord = &cv->c_ys;
-+ cv_off = &cv->c_yoff;
-+ targ_coord = target->c_ys;
-+ targ_orient = target->c_above;
-+ break;
-+ case DOWN:
-+ cv_orient = &cv->c_below;
-+ cv_coord = &cv->c_ye;
-+ cv_off = 0;
-+ targ_coord = target->c_ye;
-+ targ_orient = target->c_below;
-+ break;
-+ }
-+ if (*cv_orient == target) {
-+ *cv_coord = targ_coord;
-+ if(cv_off)
-+ *cv_off = targ_coord;
-+ *cv_orient = targ_orient;
-+ ret = (ret) ? ret : cv;
-+ }
-+ }
-+ }
-+ else {
-+ ASSERT(distance > 0);
-+ switch (direction) {
-+ /* adjust target first. */
-+ case RIGHT:
-+ if (target->c_xe - target->c_xs + distance < MIN_WIDTH)
-+ distance = target->c_xe - target->c_xs - MIN_WIDTH;
-+ target->c_xs += distance;
-+ target->c_xoff = target -> c_xs;
-+ break;
-+ case LEFT:
-+ if (target->c_xe - target->c_xs + distance < MIN_WIDTH)
-+ distance = target->c_xe - target->c_xs - MIN_WIDTH;
-+ target->c_xe -= distance;
-+ break;
-+ case UP:
-+ if (target->c_ye - target->c_ys + distance < MIN_HEIGHT)
-+ distance = target->c_ye - target->c_ys - MIN_HEIGHT;
-+ target->c_ye -= distance;
-+ break;
-+ case DOWN:
-+ if (target->c_ye - target->c_ys + distance < MIN_HEIGHT)
-+ distance = target->c_ye - target->c_ys - MIN_HEIGHT;
-+ target->c_ys += distance;
-+ target->c_yoff = target -> c_ys;
-+ break;
-+ }
-+ for (cv = list; cv; cv = cv->c_next) {
-+ int *cv_coord, *cv_off, new_coord;
-+ struct canvas **cv_orient;
-+
-+ debug("SQUEEZE\n");
-+ debug_print_canvas(cv);
-+
-+ if (cv == target)
-+ continue;
-+
-+ switch (direction) {
-+ case RIGHT:
-+ cv_orient = &cv->c_right;
-+ cv_coord = &cv->c_xe;
-+ cv_off = 0;
-+ new_coord = cv->c_xe + distance;
-+ break;
-+ case LEFT:
-+ cv_orient = &cv->c_left;
-+ cv_coord = &cv->c_xs;
-+ cv_off = &cv->c_xoff;
-+ new_coord = cv->c_xs - distance;
-+ break;
-+ case UP:
-+ cv_orient = &cv->c_above;
-+ cv_coord = &cv->c_ys;
-+ cv_off = &cv->c_yoff;
-+ new_coord = cv->c_ys - distance;
-+ break;
-+ case DOWN:
-+ cv_orient = &cv->c_below;
-+ cv_coord = &cv->c_ye;
-+ cv_off = 0;
-+ new_coord = cv->c_ye + distance;
-+ break;
-+ }
-+ if (*cv_orient == target) {
-+ *cv_coord = new_coord;
-+ if(cv_off)
-+ *cv_off = new_coord;
-+ }
-+ }
-+ ret = (struct canvas *) distance;
-+ }
-+
-+
-+ debug2("squeeze: target = %#x, ret = %#x\n", target, ret);
-+ return ret;
-+}
-+
-+
-+struct canvas *
-+grow_surrounding_regions(list, fore, amount)
-+ struct canvas *list;
-+ struct canvas *fore;
-+ int amount;
- {
-- int hh, h, i, j;
-- struct canvas *cv, **cvpp;
-- int did = 0;
-+ /* Grow all the regions in the list that border
-+ fore appropriately. */
-+ struct canvas *cv; /* For walking the list. */
-+ struct canvas *new_fore; /* Replacement for fore. */
-
-- h = D_height - (D_has_hstatus == HSTATUS_LASTLINE);
-- for (cv = D_cvlist, j = 0; cv; cv = cv->c_next)
-- j++;
-- if (j == 1)
-- return;
-- i = 0;
-- j--;
-- for (cvpp = &D_cvlist; (cv = *cvpp); cvpp = &cv->c_next)
-- {
-- if (cv == D_forecv && !did)
-- {
-- *cvpp = cv->c_next;
-- FreeCanvas(cv);
-- cv = *cvpp;
-- D_forecv = cv ? cv : D_cvlist;
-- D_fore = Layer2Window(D_forecv->c_layer);
-- flayer = D_forecv->c_layer;
-- if (cv == 0)
-+ debug("grow_surrounding_regions\n");
-+
-+ new_fore = NULL;
-+ if (amount == 0) {
-+ if (fore != list) {
-+ /* Grow the regions from above (the left). */
-+ switch (fore -> c_type) {
-+ case HORIZONTAL:
-+ if ( !(new_fore = squeeze(list, fore, DOWN, 0)))
-+ new_fore = squeeze(list, fore, RIGHT, 0);
-+ break;
-+ case VERTICAL:
-+ if ( !(new_fore = squeeze(list, fore, RIGHT, 0)))
-+ new_fore = squeeze(list, fore, DOWN, 0);
- break;
-- did = 1;
- }
-- hh = h / j-- - 1;
-- if (!captionalways && i == 0 && j == 0)
-- hh++;
-- cv->c_ys = i;
-- cv->c_ye = i + hh - 1;
-- cv->c_yoff = i;
-- i += hh + 1;
-- h -= hh + 1;
- }
-+ else { /* Grow the regions from below (the right). */
-+ switch (fore -> c_type) {
-+ case HORIZONTAL:
-+ if ( !(new_fore = squeeze(list, fore, UP, 0)))
-+ new_fore = squeeze(list, fore, LEFT, 0);
-+ break;
-+ case VERTICAL:
-+ if ( !(new_fore = squeeze(list, fore, LEFT, 0)))
-+ new_fore = squeeze(list, fore, UP, 0);
-+ break;
-+ }
-+ }
-+ ASSERT (new_fore);
-+ return new_fore;
-+ }
-+}
-+
-+
-+void
-+RemCanvas()
-+{ /** Remove the foreground canvas. */
-+
-+ struct screen_region vr; /*Canvasses in the same row/column as D_forecv.*/
-+ struct canvas *new_fore; /* Canvas which will replace D_forecv. */
-+
-+ /* Do nothing if the foreground is the only canvas. */
-+ if (D_cvlist->c_next == NULL)
-+ return;
-+
-+ compute_region(D_forecv->c_type, &vr, D_forecv, D_cvlist);
-+
-+ debug1("RemCanvas. count = %d\n",vr.count);
-+ debug_print_all_canvasses("RemCanvas() start\n");
-+
-+ if (vr.count > 1) { /* Resize the neighboring canvas in region. */
-+ debug2("D_forecv = %x vr.start = %x\n",D_forecv, vr.start);
-+ /* If there is a canvas before D_forecv, then
-+ grow that canvas to take up the space. */
-+ if (D_forecv != vr.start) {
-+ struct canvas *pred; /* Predecssor of D_forecv. */
-+ for (pred = vr.start; pred->c_next != D_forecv; )
-+ pred = pred->c_next;
-+
-+ new_fore = pred;
-+ new_fore -> c_ye = D_forecv->c_ye;
-+ new_fore -> c_xe = D_forecv->c_xe;
-+
-+ }
-+ else {
-+ new_fore = D_forecv -> c_next;
-+ new_fore -> c_ys = D_forecv -> c_ys;
-+ new_fore -> c_xs = D_forecv -> c_xs;
-+ new_fore -> c_yoff = new_fore -> c_ys;
-+ new_fore -> c_xoff = new_fore -> c_xs;
-+ }
-+ }
-+ else { /* Resize all bordering regions. */
-+ new_fore = grow_surrounding_regions( D_cvlist, D_forecv,0);
-+ }
-+ debug_print_canvas(new_fore);
-+
-+ /* Redirect all pointers in the list. */
-+ redirect_pointers(D_cvlist, D_forecv, new_fore);
-+
-+ remove_canvas_from_list(&D_cvlist, D_forecv);
-+ FreeCanvas(D_forecv);
-+ D_forecv = new_fore;
-+ D_fore = Layer2Window(D_forecv->c_layer);
-+ flayer = D_forecv->c_layer;
-+
-+ debug2("RemCanvas. forecv = %#x new_fore = %#x\n", D_forecv, new_fore);
-+ debug_print_all_canvasses("RemCanvas() end.\n");
-+
- RethinkDisplayViewports();
- ResizeLayersToCanvases();
- }
-
- void
--OneCanvas()
--{
-- struct canvas *mycv = D_forecv;
-- struct canvas *cv, **cvpp;
-+OneCanvas(list, target)
-+struct canvas **list;
-+struct canvas *target;
-+{ /* Free all canvasses in the list except for
-+ target. Make *list reference target. */
-+ struct canvas *cv;
-+ struct canvas *next;
-
-- for (cvpp = &D_cvlist; (cv = *cvpp);)
-- {
-- if (cv == mycv)
-- {
-- cv->c_ys = 0;
-- cv->c_ye = D_height - 1 - (D_has_hstatus == HSTATUS_LASTLINE) - captionalways;
-- cv->c_yoff = 0;
-- cvpp = &cv->c_next;
-- }
-- else
-- {
-- *cvpp = cv->c_next;
-+ debug_print_all_canvasses("OneCanvas start.\n");
-+ for (cv = *list; cv; cv = next) {
-+ next = cv -> c_next;
-+ if (cv == target) {
-+ cv -> c_xoff = 0;
-+ cv -> c_xs = 0;
-+ cv -> c_xe = D_width-1;
-+ cv -> c_yoff = 0;
-+ cv -> c_ys = 0;
-+ cv -> c_ye = D_height - 1 - (D_has_hstatus ==
-+ HSTATUS_LASTLINE) - captionalways;
-+ cv -> c_left = cv->c_right = NULL;
-+ cv -> c_above = cv->c_below = NULL;
-+ cv -> c_next = NULL;
-+ } else {
- FreeCanvas(cv);
- }
- }
-+ *list = target;
-+ debug_print_all_canvasses("OneCanvas end.\n");
-+
- RethinkDisplayViewports();
- ResizeLayersToCanvases();
- }
---- display.h.orig 2003-07-01 14:01:42.000000000 +0000
-+++ display.h 2006-07-07 02:39:25.000000000 +0000
-@@ -58,6 +58,11 @@ struct canvas
- int c_ys;
- int c_ye;
- struct event c_captev; /* caption changed event */
-+ int c_type; /* which type of split created the canvas. */
-+ struct canvas *c_right; /* canvas to the right. */
-+ struct canvas *c_left; /* canvas to the left. */
-+ struct canvas *c_above; /* canvas above. */
-+ struct canvas *c_below; /* canvas below. */
- };
-
- struct viewport
---- extern.h.orig 2003-08-22 12:27:57.000000000 +0000
-+++ extern.h 2006-07-07 02:39:25.000000000 +0000
-@@ -289,9 +289,9 @@ extern void NukePending __P((void));
- #endif
- extern void SetCanvasWindow __P((struct canvas *, struct win *));
- extern int MakeDefaultCanvas __P((void));
--extern int AddCanvas __P((void));
-+extern int AddCanvas __P((int));
- extern void RemCanvas __P((void));
--extern void OneCanvas __P((void));
-+extern void OneCanvas __P((struct canvas **, struct canvas *));
- extern int RethinkDisplayViewports __P((void));
- extern void RethinkViewportOffsets __P((struct canvas *));
- #ifdef RXVT_OSC
-@@ -490,3 +490,16 @@ extern int PrepareEncodedChar __P((int
- # endif
- #endif
- extern int EncodeChar __P((char *, int, int, int *));
-+extern int compute_region __P((int,struct screen_region *, struct canvas *, struct canvas *));
-+extern void reset_region_types __P((struct screen_region *, int));
-+extern void equalize_canvas_dimensions __P((struct screen_region *));
-+extern int adjust_canvas_dimensions __P((struct screen_region *, struct canvas *, int));
-+enum directions {
-+ LEFT,
-+ RIGHT,
-+ UP,
-+ DOWN
-+};
-+
-+extern struct canvas * squeeze __P(( struct canvas *, struct canvas *,
-+ enum directions, int distance));
---- process.c.orig 2003-09-18 12:53:54.000000000 +0000
-+++ process.c 2006-07-07 02:39:26.000000000 +0000
-@@ -548,6 +548,7 @@ InitKeytab()
- ktab['B'].nr = RC_POW_BREAK;
- ktab['_'].nr = RC_SILENCE;
- ktab['S'].nr = RC_SPLIT;
-+ ktab['V'].nr = RC_VERT_SPLIT;
- ktab['Q'].nr = RC_ONLY;
- ktab['X'].nr = RC_REMOVE;
- ktab['F'].nr = RC_FIT;
-@@ -3649,7 +3650,11 @@ int key;
- break;
- #endif /* MULTIUSER */
- case RC_SPLIT:
-- AddCanvas();
-+ AddCanvas(HORIZONTAL);
-+ Activate(-1);
-+ break;
-+ case RC_VERT_SPLIT:
-+ AddCanvas(VERTICAL);
- Activate(-1);
- break;
- case RC_REMOVE:
-@@ -3657,7 +3662,7 @@ int key;
- Activate(-1);
- break;
- case RC_ONLY:
-- OneCanvas();
-+ OneCanvas(&D_cvlist, D_forecv);
- Activate(-1);
- break;
- case RC_FIT:
-@@ -5877,104 +5882,51 @@ static void
- ResizeRegions(arg)
- char *arg;
- {
-- struct canvas *cv;
-- int nreg, dsize, diff, siz;
-+ struct screen_region region; /* Region in which D_forecv resides. */
-+ int adjusted;
-+
-+ /* Note: there's a nomenclature problem here. I'm using 'region'
-+ to mean a set of canvasses that are related geographically
-+ in the display. The documentation uses 'region' to refer to
-+ a single canvas (that's the usage in the error message
-+ below). */
-
- ASSERT(display);
-- for (nreg = 0, cv = D_cvlist; cv; cv = cv->c_next)
-- nreg++;
-- if (nreg < 2)
-- {
-- Msg(0, "resize: need more than one region");
-- return;
-- }
-- dsize = D_height - (D_has_hstatus == HSTATUS_LASTLINE);
-- if (*arg == '=')
-- {
-- /* make all regions the same height */
-- int h = dsize;
-- int hh, i = 0;
-- for (cv = D_cvlist; cv; cv = cv->c_next)
-- {
-- hh = h / nreg-- - 1;
-- cv->c_ys = i;
-- cv->c_ye = i + hh - 1;
-- cv->c_yoff = i;
-- i += hh + 1;
-- h -= hh + 1;
-- }
-- RethinkDisplayViewports();
-- ResizeLayersToCanvases();
-+ if (D_cvlist -> c_next == NULL) {
-+ Msg(0, "More than one region required.");
- return;
- }
-- siz = D_forecv->c_ye - D_forecv->c_ys + 1;
-- if (*arg == '+')
-- diff = atoi(arg + 1);
-- else if (*arg == '-')
-- diff = -atoi(arg + 1);
-- else if (!strcmp(arg, "min"))
-- diff = 1 - siz;
-- else if (!strcmp(arg, "max"))
-- diff = dsize - (nreg - 1) * 2 - 1 - siz;
-- else
-- diff = atoi(arg) - siz;
-- if (diff == 0)
-- return;
-- if (siz + diff < 1)
-- diff = 1 - siz;
-- if (siz + diff > dsize - (nreg - 1) * 2 - 1)
-- diff = dsize - (nreg - 1) * 2 - 1 - siz;
-- if (diff == 0 || siz + diff < 1)
-- return;
-
-- if (diff < 0)
-- {
-- if (D_forecv->c_next)
-- {
-- D_forecv->c_ye += diff;
-- D_forecv->c_next->c_ys += diff;
-- D_forecv->c_next->c_yoff += diff;
-- }
-- else
-- {
-- for (cv = D_cvlist; cv; cv = cv->c_next)
-- if (cv->c_next == D_forecv)
-+ compute_region(D_forecv->c_type, &region, D_forecv, D_cvlist);
-+ reset_region_types(&region, D_forecv->c_type);
-+
-+ if (region.count > 1) {
-+ switch (*arg) {
-+ case '=': equalize_canvas_dimensions(&region); break;
-+ case '-': adjust_canvas_dimensions(&region, D_forecv, -atoi(arg+1)); break;
-+ case '+':
-+ adjusted = adjust_canvas_dimensions(&region, D_forecv, atoi(arg+1));
- break;
-- ASSERT(cv);
-- cv->c_ye -= diff;
-- D_forecv->c_ys -= diff;
-- D_forecv->c_yoff -= diff;
-- }
-- }
-- else
-- {
-- int s, i = 0, found = 0, di = diff, d2;
-- s = dsize - (nreg - 1) * 2 - 1 - siz;
-- for (cv = D_cvlist; cv; i = cv->c_ye + 2, cv = cv->c_next)
-- {
-- if (cv == D_forecv)
-- {
-- cv->c_ye = i + (cv->c_ye - cv->c_ys) + diff;
-- cv->c_yoff -= cv->c_ys - i;
-- cv->c_ys = i;
-- found = 1;
-- continue;
-+ case 'm':
-+ if (!strcmp(arg, "min"))
-+ adjust_canvas_dimensions(&region, D_forecv, -region.expanse);
-+ else if (!strcmp(arg, "max"))
-+ adjust_canvas_dimensions(&region, D_forecv, region.expanse);
-+ break;
-+ default:
-+ Msg(0, "resize: arguments munged");
- }
-- s -= cv->c_ye - cv->c_ys;
-- if (!found)
-- {
-- if (s >= di)
-- continue;
-- d2 = di - s;
- }
-- else
-- d2 = di > cv->c_ye - cv->c_ys ? cv->c_ye - cv->c_ys : di;
-- di -= d2;
-- cv->c_ye = i + (cv->c_ye - cv->c_ys) - d2;
-- cv->c_yoff -= cv->c_ys - i;
-- cv->c_ys = i;
-+ else {
-+ /*TODO Need to expand this canvas into surrounding regions...*/
-+ switch(*arg) {
-+ case '=': Msg(0, "More than one region required."); return;
-+ // http://lists.gnu.org/archive/html/screen-users/2006-06/msg00012.html
-+ // case '-': squeeze(D_cvlist, D_forecv, RIGHT, atoi(arg+1)); break;
-+ default : Msg(0, "More than one region required."); return;
- }
- }
-+
- RethinkDisplayViewports();
- ResizeLayersToCanvases();
- }
---- screen.h.orig 2003-08-22 12:28:43.000000000 +0000
-+++ screen.h 2006-07-07 02:39:26.000000000 +0000
-@@ -288,8 +288,25 @@ struct baud_values
- int sym; /* symbol defined in ttydev.h */
- };
-
-+struct screen_region {
-+ /* This is a group of canvasses that are all in
-+ the same column or row. */
-+ struct canvas *start; /* First canvas in the region. */
-+ struct canvas *end; /* Last canvas in the region. */
-+ int expanse; /* Range in the appropriate direction. */
-+ int count; /* Number of canvasses in the region. */
-+ int type; /* HORIZONTAL or VERTICAL. */
-+ int xs; /* starting x coordinate */
-+ int xe; /* ending x coordinate */
-+ int ys; /* starting y coordinate */
-+ int ye; /* ending y coordinate */
-+};
-+
- /*
- * windowlist orders
- */
- #define WLIST_NUM 0
- #define WLIST_MRU 1
-+
-+#define HORIZONTAL 0
-+#define VERTICAL 1
</del></span></pre>
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