Scrollable win for command output.

1 files changed, 294 insertions, 0 deletions

diff --git a/window-more.c b/window-more.c
new file mode 100644
index 00000000..2dd657ec
--- /dev/null
+++ b/window-more.c
@@ -0,0 +1,294 @@
+/* $Id: window-more.c,v 1.1 2007-11-21 19:44:05 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"
+
+void	window_more_init(struct window *);
+void	window_more_resize(struct window *, u_int, u_int);
+void	window_more_draw(struct window *, struct buffer *, u_int, u_int);
+void	window_more_key(struct window *, int);
+
+void	window_more_draw_position(struct window *, struct screen_draw_ctx *);
+void	window_more_draw_line(struct window *, struct screen_draw_ctx *, u_int);
+
+void	window_more_up_1(struct window *);
+void	window_more_down_1(struct window *);
+
+const struct window_mode window_more_mode = {
+	window_more_init,
+	window_more_resize,
+	window_more_draw,
+	window_more_key
+};
+
+struct window_more_mode_data {
+	ARRAY_DECL(, char *)	list;
+	u_int			top;
+};
+
+void
+window_more_vadd(struct window *w, const char *fmt, va_list ap)
+{
+	struct window_more_mode_data	*data = w->modedata;
+	char   				*s;
+
+	xvasprintf(&s, fmt, ap);
+	ARRAY_ADD(&data->list, s);
+}
+
+void
+window_more_add(struct window *w, const char *fmt, ...)
+{
+	va_list	ap;
+
+	va_start(ap, fmt);
+	window_more_vadd(w, fmt, ap);
+	va_end(ap);
+}
+
+void
+window_more_init(struct window *w)
+{
+	struct window_more_mode_data	*data;
+
+	w->modedata = data = xmalloc(sizeof *data);
+	ARRAY_INIT(&data->list);
+	data->top = 0;
+}
+
+void
+window_more_resize(unused struct window *w, unused u_int sx, unused u_int sy)
+{
+}
+
+void
+window_more_draw_position(struct window *w, struct screen_draw_ctx *ctx)
+{
+	struct window_more_mode_data	*data = w->modedata;
+	char				*ptr, buf[32];
+	size_t	 			 len;
+	char				*line;
+	size_t				 n;
+
+	len = xsnprintf(
+	    buf, sizeof buf, "[%u/%u]", data->top, ARRAY_LENGTH(&data->list));
+	if (len <= screen_size_x(ctx->s))
+		ptr = buf;
+	else {
+		ptr = buf + len - screen_size_x(ctx->s);
+		len -= len - screen_size_x(ctx->s);
+	}
+
+	screen_draw_move(ctx, 0, 0);
+
+	if (data->top < ARRAY_LENGTH(&data->list)) {
+		line = ARRAY_ITEM(&data->list, data->top);
+		n = strlen(line);
+		if (n > screen_size_x(ctx->s) - len)
+			n = screen_size_x(ctx->s) - len;
+		buffer_write(ctx->b, line, n);
+	} else
+		n = 0;
+	for (; n < screen_size_x(ctx->s) - len; n++)
+		input_store8(ctx->b, SCREEN_DEFDATA);
+
+	screen_draw_move(ctx, screen_size_x(ctx->s) - len, 0);
+	screen_draw_set_attributes(ctx, 0, status_colour);
+	buffer_write(ctx->b, buf, len);
+}
+
+void
+window_more_draw_line(struct window *w, struct screen_draw_ctx *ctx, u_int py)
+{
+	struct window_more_mode_data	*data = w->modedata;
+	char				*line;
+	size_t				 n;
+	u_int				 p;
+
+	screen_draw_move(ctx, 0, py);
+	screen_draw_set_attributes(ctx, SCREEN_DEFATTR, SCREEN_DEFCOLR);
+	
+	p = data->top + py;
+	if (p >= ARRAY_LENGTH(&data->list)) {
+		input_store_zero(ctx->b, CODE_CLEARLINE);
+		return;
+	}
+
+	line = ARRAY_ITEM(&data->list, p);
+	n = strlen(line);
+	if (n > screen_size_x(ctx->s))
+		n = screen_size_x(ctx->s);
+	buffer_write(ctx->b, line, n);
+	for (; n < screen_size_x(ctx->s); n++)
+		input_store8(ctx->b, SCREEN_DEFDATA);
+}
+
+void
+window_more_draw(struct window *w, struct buffer *b, u_int py, u_int ny)
+{
+	struct screen			*s = &w->screen;
+	struct screen_draw_ctx		 ctx;
+	u_int				 i;
+
+	screen_draw_start(&ctx, s, b, 0, 0);
+
+	for (i = py; i < py + ny; i++) {
+		if (i == 0)
+			continue;
+		window_more_draw_line(w, &ctx, i);
+	}
+	if (py == 0)
+		window_more_draw_position(w, &ctx);
+
+	screen_draw_stop(&ctx);
+	input_store_zero(b, CODE_CURSOROFF);
+}
+
+void
+window_more_key(struct window *w, int key)
+{
+	struct window_more_mode_data	*data = w->modedata;
+	u_int				 top, sy;
+	
+	sy = screen_size_y(&w->screen);
+
+	top = data->top;
+
+	switch (key) {
+	case 'Q':
+	case 'q':
+		w->mode = NULL;
+		xfree(w->modedata);
+
+		recalculate_sizes();
+		server_redraw_window_all(w);
+		return;
+	case 'k':
+	case 'K':
+	case KEYC_UP:
+		window_more_up_1(w);
+		return;
+	case 'j':
+	case 'J':
+	case KEYC_DOWN:
+		window_more_down_1(w);
+		return;
+	case '\025':	/* C-u */
+	case KEYC_PPAGE:
+		if (data->top < sy)
+			data->top = 0;
+		else
+			data->top -= sy;
+		break;
+	case '\006':	/* C-f */
+	case KEYC_NPAGE:
+		if (data->top + sy > ARRAY_LENGTH(&data->list))
+			data->top = ARRAY_LENGTH(&data->list);
+		else
+			data->top += sy;
+		break;
+	}
+	if (top != data->top)
+		server_redraw_window_all(w);
+}
+
+void
+window_more_up_1(struct window *w)
+{
+	struct window_more_mode_data	*data = w->modedata;
+	struct screen			*s = &w->screen;
+	struct screen_draw_ctx		 ctx;
+	struct client			*c;
+	u_int		 		 i;
+	struct hdr			 hdr;
+	size_t				 size;
+
+	if (data->top == 0)
+		return;
+	data->top--;
+
+	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
+		c = ARRAY_ITEM(&clients, i);
+		if (c == NULL || c->session == NULL)
+			continue;
+		if (!session_has(c->session, w))
+			continue;
+
+		buffer_ensure(c->out, sizeof hdr);
+		buffer_add(c->out, sizeof hdr);
+		size = BUFFER_USED(c->out);
+
+		screen_draw_start(&ctx, s, c->out, 0, 0);
+		screen_draw_move(&ctx, 0, 0);
+		input_store_one(c->out, CODE_INSERTLINE, 1);
+		window_more_draw_position(w, &ctx);
+		window_more_draw_line(w, &ctx, 1);
+		screen_draw_stop(&ctx);
+		input_store_zero(c->out, CODE_CURSOROFF);
+
+		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
+window_more_down_1(struct window *w)
+{
+	struct window_more_mode_data	*data = w->modedata;
+	struct screen			*s = &w->screen;
+	struct screen_draw_ctx		 ctx;
+	struct client			*c;
+	u_int		 		 i;
+	struct hdr			 hdr;
+	size_t				 size;
+
+	if (data->top >= ARRAY_LENGTH(&data->list))
+		return;
+	data->top++;
+
+	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
+		c = ARRAY_ITEM(&clients, i);
+		if (c == NULL || c->session == NULL)
+			continue;
+		if (!session_has(c->session, w))
+			continue;
+
+		buffer_ensure(c->out, sizeof hdr);
+		buffer_add(c->out, sizeof hdr);
+		size = BUFFER_USED(c->out);
+		
+		screen_draw_start(&ctx, s, c->out, 0, 0);
+		screen_draw_move(&ctx, 0, 0);
+		input_store_one(c->out, CODE_DELETELINE, 1);
+		window_more_draw_line(w, &ctx, screen_last_y(s));
+		window_more_draw_position(w, &ctx);
+		screen_draw_stop(&ctx);
+		input_store_zero(c->out, CODE_CURSOROFF);
+		
+		size = BUFFER_USED(c->out) - size;
+		hdr.type = MSG_DATA;
+		hdr.size = size;
+		memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
+	}	
+}