1 files changed, 211 insertions, 0 deletions
diff --git a/usr.bin/tmux/grid-view.c b/usr.bin/tmux/grid-view.c
new file mode 100644
index 00000000000..7e4920ac7f8
--- /dev/null
+++ b/usr.bin/tmux/grid-view.c
@@ -0,0 +1,211 @@
+/* $OpenBSD: grid-view.c,v 1.1 2009/06/01 22:58:49 nicm Exp $ */
+
+/*
+ * Copyright (c) 2008 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"
+
+/*
+ * Grid view functions. These work using coordinates relative to the visible
+ * screen area.
+ */
+
+#define grid_view_x(gd, x) (x)
+#define grid_view_y(gd, y) ((gd)->hsize + (y))
+
+/* Get cell for reading. */
+const struct grid_cell *
+grid_view_peek_cell(struct grid *gd, u_int px, u_int py)
+{
+	return (grid_peek_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
+}
+
+/* Get cell for writing. */
+struct grid_cell *
+grid_view_get_cell(struct grid *gd, u_int px, u_int py)
+{
+	return (grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
+}
+
+/* Set cell. */
+void
+grid_view_set_cell(
+    struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
+{
+	grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
+}
+
+/* Get UTF-8 for reading. */
+const struct grid_utf8 *
+grid_view_peek_utf8(struct grid *gd, u_int px, u_int py)
+{
+	return (grid_peek_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
+}
+
+/* Get UTF-8 for writing. */
+struct grid_utf8 *
+grid_view_get_utf8(struct grid *gd, u_int px, u_int py)
+{
+	return (grid_get_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
+}
+
+/* Set UTF-8. */
+void
+grid_view_set_utf8(
+    struct grid *gd, u_int px, u_int py, const struct grid_utf8 *gu)
+{
+	grid_set_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py), gu);
+}
+
+/* Clear area. */
+void
+grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny)
+{
+	GRID_DEBUG(gd, "px=%u, py=%u, nx=%u, ny=%u", px, py, nx, ny);
+
+	px = grid_view_x(gd, px);
+	py = grid_view_y(gd, py);
+
+	grid_clear(gd, px, py, nx, ny);
+}
+
+/* Scroll region up. */
+void
+grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower)
+{
+	GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower);
+
+	if (rupper == 0 && rlower == gd->sy - 1) {
+		grid_scroll_line(gd);
+		return;
+	}
+
+	rupper = grid_view_y(gd, rupper);
+	rlower = grid_view_y(gd, rlower);
+
+	grid_move_lines(gd, rupper, rupper + 1, rlower - rupper);
+}
+
+/* Scroll region down. */
+void
+grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower)
+{
+	GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower);
+
+	rupper = grid_view_y(gd, rupper);
+	rlower = grid_view_y(gd, rlower);
+
+	grid_move_lines(gd, rupper + 1, rupper, rlower - rupper);
+}
+
+/* Insert lines. */
+void
+grid_view_insert_lines(struct grid *gd, u_int py, u_int ny)
+{
+	u_int	sy;
+
+	GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
+
+	py = grid_view_y(gd, py);
+
+	sy = grid_view_y(gd, gd->sy);
+
+	grid_move_lines(gd, py + ny, py, sy - py - ny);
+}
+
+/* Insert lines in region. */
+void
+grid_view_insert_lines_region(
+    struct grid *gd, unused u_int rupper, u_int rlower, u_int py, u_int ny)
+{
+	GRID_DEBUG(
+	    gd, "rupper=%u, rlower=%u, py=%u, ny=%u", rupper, rlower, py, ny);
+
+	rlower = grid_view_y(gd, rlower);
+
+	py = grid_view_y(gd, py);
+
+	grid_move_lines(gd, py + ny, py, (rlower + 1) - py - ny);
+}
+
+/* Delete lines. */
+void
+grid_view_delete_lines(struct grid *gd, u_int py, u_int ny)
+{
+	u_int	sy;
+
+	GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
+
+	py = grid_view_y(gd, py);
+
+	sy = grid_view_y(gd, gd->sy);
+
+	grid_move_lines(gd, py, py + ny, sy - py - ny);
+}
+
+/* Delete lines inside scroll region. */
+void
+grid_view_delete_lines_region(
+    struct grid *gd, unused u_int rupper, u_int rlower, u_int py, u_int ny)
+{
+	GRID_DEBUG(
+	    gd, "rupper=%u, rlower=%u, py=%u, ny=%u", rupper, rlower, py, ny);
+
+	rlower = grid_view_y(gd, rlower);
+
+	py = grid_view_y(gd, py);
+
+	grid_move_lines(gd, py, py + ny, (rlower + 1) - py - ny);
+}
+
+/* Insert characters. */
+void
+grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx)
+{
+	u_int	sx;
+
+	GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
+
+	px = grid_view_x(gd, px);
+	py = grid_view_y(gd, py);
+
+	sx = grid_view_x(gd, gd->sx);
+
+	if (px == sx - 1)
+		grid_clear(gd, px, py, 1, 1);
+	else
+		grid_move_cells(gd, px + nx, px, py, (sx - 1) - (px + nx));
+}
+
+/* Delete characters. */
+void
+grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx)
+{
+	u_int	sx;
+
+	GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
+
+	px = grid_view_x(gd, px);
+	py = grid_view_y(gd, py);
+
+	sx = grid_view_x(gd, gd->sx);
+
+	grid_move_cells(gd, px, px + nx, py, (sx - 1) - (px + nx));
+}