Incomplete resize support.

CHANGES

@@ -1,8 +1,10 @@
 04 October 2007
 
-* (mxey) Added my tmux start script as an example (examples/start-tmux.sh)
-* (mxey) New sessions can now be given a command for their first window
-* (mxey) Fixed usage statemnt for new-window
+* (nicm) Partial resizing support. Still buggy. A C-b S and back sometimes fixes
+  it when it goes wonky.
+* (mxey) Added my tmux start script as an example (examples/start-tmux.sh).
+* (mxey) New sessions can now be given a command for their first window.
+* (mxey) Fixed usage statement for new-window.
 * (nicm) attach-session (can't believe I forgot it until now!) and list-windows
   commands.
 * (nicm) rename-window and select-window commands.
@@ -115,5 +117,5 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.34 2007-10-04 14:14:12 mxey Exp $
+$Id: CHANGES,v 1.35 2007-10-04 19:03:51 nicm Exp $
 

Makefile

@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.22 2007-10-04 11:52:02 nicm Exp $
+# $Id: Makefile,v 1.23 2007-10-04 19:03:51 nicm Exp $
 
 .SUFFIXES: .c .o .y .h
 .PHONY: clean
@@ -18,7 +18,7 @@ META?= \002 # C-b
 SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
       xmalloc.c xmalloc-debug.c input.c input-keys.c screen.c window.c \
       session.c local.c log.c client.c client-msg.c client-fn.c key-string.c \
-      key-bindings.c cmd.c cmd-new-session.c cmd-detach-session.c \
+      key-bindings.c resize.c cmd.c cmd-new-session.c cmd-detach-session.c \
       cmd-list-sessions.c cmd-new-window.c cmd-next-window.c cmd-bind-key.c \
       cmd-unbind-key.c cmd-previous-window.c cmd-last-window.c cmd-list-keys.c \
       cmd-set-option.c cmd-rename-window.c cmd-select-window.c \

client.c

@@ -1,4 +1,4 @@
-/* $Id: client.c,v 1.12 2007-10-04 11:52:02 nicm Exp $ */
+/* $Id: client.c,v 1.13 2007-10-04 19:03:51 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -175,7 +175,7 @@ client_main(struct client_ctx *cctx)
 
 	if (error != NULL) {
 		if (*error == '\0') {
-			printf("[exited]\n", error);
+			printf("[exited]\n");
 			return (0);
 		}
 		printf("[error: %s]\n", error);

cmd-attach-session.c

@@ -1,4 +1,4 @@
-/* $Id: cmd-attach-session.c,v 1.1 2007-10-04 11:52:03 nicm Exp $ */
+/* $Id: cmd-attach-session.c,v 1.2 2007-10-04 19:03:51 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -55,5 +55,6 @@ cmd_attach_session_exec(unused void *ptr, struct cmd_ctx *ctx)
 	c->session = s;
 
 	server_write_client(c, MSG_READY, NULL, 0);
+	recalculate_sizes();
 	server_redraw_client(c);
 }

cmd-new-session.c

@@ -1,4 +1,4 @@
-/* $Id: cmd-new-session.c,v 1.6 2007-10-04 13:43:14 mxey Exp $ */
+/* $Id: cmd-new-session.c,v 1.7 2007-10-04 19:03:51 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -99,7 +99,7 @@ cmd_new_session_usage(void)
 void
 cmd_new_session_exec(void *ptr, struct cmd_ctx *ctx)
 {
-	struct cmd_new_session_data	*data = ptr, std = { NULL, 0 };
+	struct cmd_new_session_data	*data = ptr, std = { NULL, NULL, 0 };
 	struct client			*c = ctx->client;
 	char				*cmd;
 	u_int				 sy;

input.c

@@ -1,4 +1,4 @@
-/* $Id: input.c,v 1.19 2007-10-03 10:18:32 nicm Exp $ */
+/* $Id: input.c,v 1.20 2007-10-04 19:03:51 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -428,6 +428,8 @@ input_handle_character(u_char ch, struct input_ctx *ictx)
 {
 	log_debug2("-- ch %zu: %hhu (%c)", ictx->off, ch, ch);
 	
+	if (ictx->s->cx > ictx->s->sx - 1 || ictx->s->cy > ictx->s->sy - 1)
+		return;
 	screen_write_character(ictx->s, ch);
 	input_store8(ictx->b, ch);
 }

resize.c

@@ -0,0 +1,102 @@
+/* $Id: resize.c,v 1.1 2007-10-04 19:03:51 nicm Exp $ */
+
+/*
+ * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <string.h>
+
+#include "tmux.h"
+
+/*
+ * Recalculate window and session sizes.
+ *
+ * Every session has the size of the smallest client it is attached to and
+ * every window the size of the smallest session it is attached to.
+ *
+ * So, when a client is resized or a session attached to or detached from a
+ * client, the window sizes must be recalculated. For each session, find the
+ * smallest client it is attached to, and resize it to that size. Then for
+ * every window, find the smallest session it is attached to, resize it to that
+ * size and clear and redraw every client with it as the current window.
+ * 
+ * This is quite inefficient - better/additional data structures are needed
+ * to make it better.
+ */
+
+void
+recalculate_sizes(void)
+{
+	struct session	*s;
+	struct client	*c;
+	struct window	*w;
+	u_int		 i, j, ssx, ssy;
+	
+	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
+		s = ARRAY_ITEM(&sessions, i);
+		if (s == NULL)
+			continue;
+
+		ssx = ssy = UINT_MAX;
+		for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
+			c = ARRAY_ITEM(&clients, j);
+			if (c == NULL || c->session != s)
+				continue;
+			if (c->sx < ssx)
+				ssx = c->sx;
+			if (c->sy < ssy)
+				ssy = c->sy;
+		}
+		if (ssy < status_lines)
+			ssy = status_lines + 1;
+		ssy -= status_lines;
+		if (s->sx == ssx && s->sy == ssy)
+			continue;
+
+		log_debug(
+		    "session size %u,%u (was %u,%u)", ssx, ssy, s->sx, s->sy);
+
+		s->sx = ssx;
+		s->sy = ssy;
+	}
+
+	for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
+		w = ARRAY_ITEM(&windows, i);
+		if (w == NULL)
+			continue;
+
+		ssx = ssy = UINT_MAX;
+		for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
+			s = ARRAY_ITEM(&sessions, j);
+			if (s == NULL || !session_has(s, w))
+				continue;
+			if (s->sx < ssx)
+				ssx = s->sx;
+			if (s->sy < ssy)
+				ssy = s->sy;
+		}
+		if (w->screen.sx == ssx && w->screen.sy == ssy)
+			continue;
+
+		log_debug("window size %u,%u (was %u,%u)", 
+		    ssx, ssy, w->screen.sx, w->screen.sy);
+
+		server_clear_window(w);
+		window_resize(w, ssx, ssy);
+		server_redraw_window(w);
+	}
+}

screen.c

@@ -1,4 +1,4 @@
-/* $Id: screen.c,v 1.19 2007-10-01 14:18:42 nicm Exp $ */
+/* $Id: screen.c,v 1.20 2007-10-04 19:03:51 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -87,6 +87,9 @@ screen_resize(struct screen *s, u_int sx, u_int sy)
 	s->sx = sx;
 	s->sy = sy;
 
+	s->ry_upper = 0;
+	s->ry_lower = screen_last_y(s);
+
 	log_debug("resizing screen (%u, %u) -> (%u, %u)", ox, oy, sx, sy);
 
 	if (sy < oy) {

server-fn.c

@@ -1,4 +1,4 @@
-/* $Id: server-fn.c,v 1.17 2007-10-04 10:39:07 nicm Exp $ */
+/* $Id: server-fn.c,v 1.18 2007-10-04 19:03:51 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -128,7 +128,7 @@ server_redraw_status(struct client *c)
 	struct hdr	hdr;
 	size_t		size;
 
-	if (status_lines == 0)
+	if (status_lines == 0 || c->sy <= status_lines)
 		return;
 
 	buffer_ensure(c->out, sizeof hdr);
@@ -144,11 +144,35 @@ server_redraw_status(struct client *c)
 }
 
 void
-server_redraw_client(struct client *c)
+server_clear_client(struct client *c)
 {
+	struct screen	*s = &c->session->window->screen;
 	struct hdr	 hdr;
 	size_t		 size;
+	u_int		 i;
+
+	buffer_ensure(c->out, sizeof hdr);
+	buffer_add(c->out, sizeof hdr);
+	size = BUFFER_USED(c->out);
+	
+	input_store_zero(c->out, CODE_CURSOROFF);
+	for (i = 0; i < s->sy; i++) {
+		input_store_two(c->out, CODE_CURSORMOVE, i + 1, 1);
+		input_store_zero(c->out, CODE_CLEARLINE);
+	}
+	
+	size = BUFFER_USED(c->out) - size;
+	hdr.type = MSG_DATA;
+	hdr.size = size;
+	memcpy(BUFFER_IN(c->out) - size - sizeof hdr,  &hdr, sizeof hdr);
+}
+
+void
+server_redraw_client(struct client *c)
+{
 	struct screen	*s = &c->session->window->screen;
+	struct hdr	 hdr;
+	size_t		 size;
 
 	buffer_ensure(c->out, sizeof hdr);
 	buffer_add(c->out, sizeof hdr);
@@ -181,6 +205,19 @@ server_redraw_session(struct session *s)
 	}
 }
 
+void
+server_clear_window(struct window *w)
+{
+	struct client	*c;
+	u_int		 i;
+
+	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
+		c = ARRAY_ITEM(&clients, i);
+		if (c != NULL && c->session != NULL && c->session->window == w)
+			server_clear_client(c);
+	}
+}
+
 void
 server_redraw_window(struct window *w)
 {

server-msg.c

@@ -1,4 +1,4 @@
-/* $Id: server-msg.c,v 1.23 2007-10-04 11:52:03 nicm Exp $ */
+/* $Id: server-msg.c,v 1.24 2007-10-04 19:03:52 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -150,7 +150,7 @@ server_msg_fn_identify(struct hdr *hdr, struct client *c)
 		fatalx("bad MSG_IDENTIFY size");
 	buffer_read(c->in, &data, sizeof data);
 
-	log_debug("got identify msg from client: %u,%u", data.sx, data.sy);
+	log_debug("identify msg from client: %u,%u", data.sx, data.sy);
 
 	c->sx = data.sx;
 	c->sy = data.sy;
@@ -164,12 +164,13 @@ int
 server_msg_fn_resize(struct hdr *hdr, struct client *c)
 {
 	struct msg_resize_data	data;
-	u_int			sy;
 
 	if (hdr->size != sizeof data)
 		fatalx("bad MSG_RESIZE size");
 	buffer_read(c->in, &data, sizeof data);
 
+	log_debug("resize msg from client: %u,%u", data.sx, data.sy);
+
 	c->sx = data.sx;
 	if (c->sx == 0)
 		c->sx = 80;
@@ -177,27 +178,7 @@ server_msg_fn_resize(struct hdr *hdr, struct client *c)
 	if (c->sy == 0)
 		c->sy = 25;
 
-	sy = c->sy;
-	if (sy < status_lines)
-		sy = status_lines + 1;
-	sy -= status_lines;
-
-	/* XXX */
-	/*
-	 * Okay. Need to be able to recalculate sizes:
-	 *	- every session has the size of the smallest client it is 
-	 *	  attached to
-	 *	- every window has the size of the smallest session it is
-	 *	  attached to
-	 *
-	 * So, when a client is resized or a session added to a new client:
-	 *	- find the smallest client it is attached to, and resize to
-	 *	  that size
-	 * And when a session's window changes or a window is added/removed
-	 * from a session:
-	 *	- find the smallest session the window is attached to
-	 *	  and use that
-	 */
+	recalculate_sizes();
 
 	return (0);
 }

server.c

@@ -1,4 +1,4 @@
-/* $Id: server.c,v 1.23 2007-10-04 11:52:03 nicm Exp $ */
+/* $Id: server.c,v 1.24 2007-10-04 19:03:52 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -309,6 +309,8 @@ server_lost_client(struct client *c)
 	buffer_destroy(c->in);
 	buffer_destroy(c->out);
 	xfree(c);
+
+	recalculate_sizes();
 }
 
 /* Handle window data. */
@@ -376,5 +378,7 @@ server_lost_window(struct window *w)
 				server_redraw_client(c);
 		}
 	}
+
+	recalculate_sizes();
 }
 

status.c

@@ -1,4 +1,4 @@
-/* $Id: status.c,v 1.2 2007-10-03 23:32:26 nicm Exp $ */
+/* $Id: status.c,v 1.3 2007-10-04 19:03:52 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -37,7 +37,7 @@ status_write(struct client *c)
 	input_store_two(b, CODE_CURSORMOVE, c->sy - status_lines + 1, 1);
 	input_store_two(b, CODE_ATTRIBUTES, ATTR_REVERSE, 0x20);
 
-	size = s->sx;
+	size = c->sx;
 	for (i = 0; i < ARRAY_LENGTH(&c->session->windows); i++) {
 		w = ARRAY_ITEM(&c->session->windows, i);
 		if (w == NULL)

tmux.h

@@ -1,4 +1,4 @@
-/* $Id: tmux.h,v 1.47 2007-10-04 11:52:03 nicm Exp $ */
+/* $Id: tmux.h,v 1.48 2007-10-04 19:03:52 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -593,14 +593,19 @@ void	 server_write_session(
 void	 server_write_window(
              struct window *, enum hdrtype, const void *, size_t);
 void	 server_redraw_status(struct client *);
+void	 server_clear_client(struct client *);
 void	 server_redraw_client(struct client *);
 void	 server_redraw_session(struct session *);
+void	 server_clear_window(struct window *);
 void	 server_redraw_window(struct window *);
 void	 server_write_message(struct client *, const char *, ...);
 
 /* status.c */
 void	 status_write(struct client *c);
 
+/* resize.c */
+void	 recalculate_sizes(void);
+
 /* input.c */
 void	 input_init(struct input_ctx *, struct screen *);
 void	 input_free(struct input_ctx *);