Initial history support.

window-scroll.c

@@ -0,0 +1,122 @@
+/* $Id: window-scroll.c,v 1.1 2007-11-21 13:11:41 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 "tmux.h"
+
+void	window_scroll_init(struct window *);
+void	window_scroll_resize(struct window *, u_int, u_int);
+void	window_scroll_draw(struct window *, struct buffer *, u_int, u_int);
+void	window_scroll_key(struct window *, int);
+
+const struct window_mode window_scroll_mode = {
+	window_scroll_init,
+	window_scroll_resize,
+	window_scroll_draw,
+	window_scroll_key
+};
+
+u_int	window_scroll_offset;
+u_int	window_scroll_size;
+
+void
+window_scroll_init(struct window *w)
+{
+	window_scroll_offset = 0;
+	window_scroll_size = w->screen.hsize;
+}
+
+void
+window_scroll_resize(struct window *w, u_int sx, u_int sy)
+{
+}
+
+void
+window_scroll_draw(struct window *w, struct buffer *b, u_int py, u_int ny)
+{
+	struct screen	*s = &w->screen;
+	char    	 buf[32];
+	size_t		 len;
+
+	if (s->hsize != window_scroll_size) {
+		window_scroll_offset += s->hsize - window_scroll_size;
+		window_scroll_size = s->hsize;
+	}
+
+	screen_draw(s, b, py, ny, window_scroll_offset);
+	input_store_zero(b, CODE_CURSOROFF);
+
+	if (py == 0 && ny > 0) {
+		len = screen_size_x(s);
+		if (len > (sizeof buf) - 1)
+			len = (sizeof buf) - 1;
+		len = xsnprintf(buf, len + 1, "{%u/%u}",
+		    window_scroll_offset, s->hsize);
+
+		input_store_two(
+		    b, CODE_CURSORMOVE, 0, screen_size_x(s) - len + 1);
+		input_store_two(b, CODE_ATTRIBUTES, 0, status_colour);
+		buffer_write(b, buf, len);
+	}
+}
+
+void
+window_scroll_key(struct window *w, int key)
+{
+	u_int	sy = screen_size_y(&w->screen);
+
+	switch (key) {
+	case 'Q':
+	case 'q':
+		w->mode = NULL;
+		recalculate_sizes();
+		server_redraw_window_all(w);
+		break;
+	case 'k':
+	case 'K':
+	case KEYC_UP:
+		if (window_scroll_offset <  window_scroll_size)
+			window_scroll_offset++;
+		server_redraw_window_all(w);
+		break;
+	case 'j':
+	case 'J':
+	case KEYC_DOWN:
+		if (window_scroll_offset > 0)
+			window_scroll_offset--;
+		server_redraw_window_all(w);
+		break;
+	case '\025':
+	case KEYC_PPAGE:
+		if (window_scroll_offset + sy > window_scroll_size)
+			window_scroll_offset = window_scroll_size;
+		else
+			window_scroll_offset += sy;
+		server_redraw_window_all(w);
+		break;
+	case '\006':
+	case KEYC_NPAGE:
+		if (window_scroll_offset < sy)
+			window_scroll_offset = 0;
+		else
+			window_scroll_offset -= sy;
+		server_redraw_window_all(w);
+		break;
+	}
+}