1 files changed, 456 insertions, 0 deletions

diff --git a/window-copy.c b/window-copy.c
new file mode 100644
index 00000000..7fb25be5
--- /dev/null
+++ b/window-copy.c
@@ -0,0 +1,456 @@
+/* $Id: window-copy.c,v 1.1 2007-11-22 18:09:43 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_copy_init(struct window *);
+void	window_copy_resize(struct window *, u_int, u_int);
+void	window_copy_draw(struct window *, struct buffer *, u_int, u_int);
+void	window_copy_key(struct window *, int);
+
+void	window_copy_draw_position(struct window *, struct screen_draw_ctx *);
+
+u_int	window_copy_line_length(struct window *);
+void	window_copy_move_cursor(struct window *);
+void	window_copy_cursor_left(struct window *);
+void	window_copy_cursor_right(struct window *);
+void	window_copy_cursor_up(struct window *);
+void	window_copy_cursor_down(struct window *);
+void	window_copy_scroll_left(struct window *, u_int);
+void	window_copy_scroll_right(struct window *, u_int);
+void	window_copy_scroll_up(struct window *, u_int);
+void	window_copy_scroll_down(struct window *, u_int);
+
+const struct window_mode window_copy_mode = {
+	window_copy_init,
+	window_copy_resize,
+	window_copy_draw,
+	window_copy_key
+};
+
+struct window_copy_mode_data {
+	u_int	ox;
+	u_int	oy;
+	u_int	cx;
+	u_int	cy;
+	u_int	size;
+};
+
+void
+window_copy_init(struct window *w)
+{
+	struct window_copy_mode_data	*data;
+
+	w->modedata = data = xmalloc(sizeof *data);
+	data->ox = data->oy = 0;
+	data->cx = w->screen.cx;
+	data->cy = w->screen.cy;
+	data->size = w->screen.hsize;
+
+	w->screen.mode |= (MODE_BACKGROUND|MODE_BGCURSOR);
+}
+
+void
+window_copy_resize(unused struct window *w, unused u_int sx, unused u_int sy)
+{
+}
+
+void
+window_copy_draw_position(struct window *w, struct screen_draw_ctx *ctx)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+	char				*ptr, buf[32];
+	size_t	 			 len;
+
+	len = xsnprintf(
+	    buf, sizeof buf, "[%u,%u/%u]", data->ox, data->oy, data->size);
+	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_cells(ctx, 0, 0, screen_size_x(ctx->s) - len);
+	
+	screen_draw_move(ctx, screen_size_x(ctx->s) - len, 0);
+	screen_draw_set_attributes(ctx, 0, status_colour);
+	buffer_write(ctx->b, ptr, len);
+}
+
+void
+window_copy_draw(struct window *w, struct buffer *b, u_int py, u_int ny)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+	struct screen			*s = &w->screen;
+	struct screen_draw_ctx		 ctx;
+
+	if (s->hsize != data->size) {
+		data->oy += s->hsize - data->size;
+		data->size = s->hsize;
+	}
+
+	screen_draw_start(&ctx, s, b, data->ox, data->oy);
+	if (py != 0)
+		screen_draw_lines(&ctx, py, ny);
+	else if (ny > 1)
+		screen_draw_lines(&ctx, py + 1, ny - 1);
+
+	if (py == 0)
+		window_copy_draw_position(w, &ctx);
+
+	screen_draw_stop(&ctx);
+
+	input_store_two(b, CODE_CURSORMOVE, data->cy + 1, data->cx  + 1);
+}
+
+void
+window_copy_key(struct window *w, int key)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+	u_int				 oy, sy;
+	
+	sy = screen_size_y(&w->screen);
+	oy = data->oy;
+
+	switch (key) {
+	case 'Q':
+	case 'q':
+		w->mode = NULL;
+		xfree(w->modedata);
+
+		w->screen.mode &= ~MODE_BACKGROUND;
+
+		recalculate_sizes();
+		server_redraw_window_all(w);
+		return;
+	case 'h':
+	case KEYC_LEFT:
+		window_copy_cursor_left(w);
+		return;
+	case 'l':
+	case KEYC_RIGHT:
+		window_copy_cursor_right(w);
+ 		return;
+	case 'k':
+	case 'K':
+	case KEYC_UP:
+		window_copy_cursor_up(w);
+		return;
+	case 'j':
+	case 'J':
+	case KEYC_DOWN:
+		window_copy_cursor_down(w);
+		return;
+	case '\025':	/* C-u */
+	case KEYC_PPAGE:
+		if (data->oy + sy > data->size)
+			data->oy = data->size;
+		else
+			data->oy += sy;
+		break;
+	case '\006':	/* C-f */
+	case KEYC_NPAGE:
+		if (data->oy < sy)
+			data->oy = 0;
+		else
+			data->oy -= sy;
+		break;
+	/* XXX start/end of line, next word, prev word */
+	}
+	if (data->oy != oy) {
+		server_redraw_window_all(w);
+		window_copy_move_cursor(w);
+	}
+}
+
+void
+window_copy_move_cursor(struct window *w)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+	struct client			*c;
+	u_int		 		 i;
+	struct hdr			 hdr;
+	size_t				 size;
+
+	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);
+
+		input_store_two(
+		    c->out, CODE_CURSORMOVE, data->cy + 1, data->cx + 1);
+
+		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_copy_cursor_left(struct window *w)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+
+	if (data->ox + data->cx == 0)
+		return;
+
+	if (data->cx == 0)
+		window_copy_scroll_right(w, 1);
+	else
+		data->cx--;
+	window_copy_move_cursor(w);
+}
+
+void
+window_copy_cursor_right(struct window *w)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+	struct screen			*s = &w->screen;
+
+	if (data->ox + data->cx == SHRT_MAX)
+		return;
+	
+	if (data->cx == screen_last_x(s))
+		window_copy_scroll_left(w, 1);
+	else
+		data->cx++;
+	window_copy_move_cursor(w);
+}
+
+void
+window_copy_cursor_up(struct window *w)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+
+	if (data->cy == 0 && data->oy == data->size)
+		return;
+
+	if (data->cy == 0)
+		window_copy_scroll_down(w, 1);
+	else
+		data->cy--;
+	window_copy_move_cursor(w);
+}
+
+void
+window_copy_cursor_down(struct window *w)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+	struct screen			*s = &w->screen;
+
+	if (data->cy == screen_last_y(s) && data->oy == 0)
+		return;
+
+	if (data->cy == screen_last_y(s))
+		window_copy_scroll_up(w, 1);
+	else
+		data->cy++;
+	window_copy_move_cursor(w);
+}
+
+void
+window_copy_scroll_left(struct window *w, u_int nx)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+	struct screen			*s = &w->screen;
+	struct screen_draw_ctx		 ctx;
+	struct client			*c;
+	struct buffer			*b;
+	u_int		 		 i, j;
+	struct hdr			 hdr;
+	size_t				 size;
+
+	if (data->ox >= SHRT_MAX - nx)
+		nx = SHRT_MAX - data->ox;
+	if (nx == 0)
+		return;
+	data->ox += nx;
+
+	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;
+		b = c->out;
+
+		buffer_ensure(b, sizeof hdr);
+		buffer_add(b, sizeof hdr);
+		size = BUFFER_USED(b);
+		
+		screen_draw_start(&ctx, s, b, data->ox, data->oy);
+		for (j = 1; j < screen_size_y(s); j++) {
+			screen_draw_move(&ctx, 0, j);
+			input_store_one(b, CODE_DELETECHARACTER, nx);
+		}
+		for (j = 0; j < nx; j++)
+			screen_draw_column(&ctx, screen_last_x(s) - j);
+		window_copy_draw_position(w, &ctx);
+		screen_draw_stop(&ctx);
+		
+		size = BUFFER_USED(b) - size;
+		hdr.type = MSG_DATA;
+		hdr.size = size;
+		memcpy(BUFFER_IN(b) - size - sizeof hdr, &hdr, sizeof hdr);
+	}	
+}
+
+void
+window_copy_scroll_right(struct window *w, u_int nx)
+{
+	struct window_copy_mode_data	*data = w->modedata;
+	struct screen			*s = &w->screen;
+	struct screen_draw_ctx		 ctx;
+	struct client			*c;
+	struct buffer			*b;
+	u_int		 		 i, j;
+	struct hdr			 hdr;
+	size_t				 size;
+
+	if (data->ox < nx)
+		nx = data->ox;
+	if (nx == 0)
+		return;
+	data->ox -= nx;
+
+	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;
+		b = c->out;
+
+		buffer_ensure(b, sizeof hdr);
+		buffer_add(b, sizeof hdr);
+		size = BUFFER_USED(b);
+		
+		screen_draw_start(&ctx, s, b, data->ox, data->oy);
+		for (j = 1; j < screen_size_y(s); j++) {
+			screen_draw_move(&ctx, 0, j);
+			input_store_one(b, CODE_INSERTCHARACTER, nx);
+		}
+		for (j = 0; j < nx; j++)
+			screen_draw_column(&ctx, j);
+		window_copy_draw_position(w, &ctx);
+		screen_draw_stop(&ctx);
+		
+		size = BUFFER_USED(b) - size;
+		hdr.type = MSG_DATA;
+		hdr.size = size;
+		memcpy(BUFFER_IN(b) - size - sizeof hdr, &hdr, sizeof hdr);
+	}	
+}
+
+void
+window_copy_scroll_up(struct window *w, u_int ny)
+{
+	struct window_copy_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->oy < ny)
+		ny = data->oy;
+	if (ny == 0)
+		return;
+	data->oy -= ny;
+
+	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, data->ox, data->oy);
+		screen_draw_move(&ctx, 0, 0);
+		input_store_one(c->out, CODE_DELETELINE, ny);
+		for (i = 0; i < ny; i++)
+			screen_draw_line(&ctx, screen_last_y(s) - i);
+		window_copy_draw_position(w, &ctx);
+		screen_draw_stop(&ctx);
+		
+		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_copy_scroll_down(struct window *w, u_int ny)
+{
+	struct window_copy_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->oy >= data->size - ny)
+		ny = data->size - data->oy;
+	if (ny == 0)
+		return;
+	data->oy += ny;
+
+	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, data->ox, data->oy);
+		screen_draw_move(&ctx, 0, 0);
+		input_store_one(c->out, CODE_INSERTLINE, ny);
+		for (i = 1; i < ny + 1; i++)
+			screen_draw_line(&ctx, i);
+		window_copy_draw_position(w, &ctx);
+		screen_draw_stop(&ctx);
+
+		size = BUFFER_USED(c->out) - size;
+		hdr.type = MSG_DATA;
+		hdr.size = size;
+		memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
+	}	
+}