Merge branch 'obsd-master'
[tmux.git] / grid-view.c
blob4d687339c37de60b6cbbf660358e06ba105d18ed
1 /* $OpenBSD$ */
3 /*
4 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <sys/types.h>
21 #include <string.h>
23 #include "tmux.h"
26 * Grid view functions. These work using coordinates relative to the visible
27 * screen area.
30 #define grid_view_x(gd, x) (x)
31 #define grid_view_y(gd, y) ((gd)->hsize + (y))
33 /* Get cell. */
34 void
35 grid_view_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
37 grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
40 /* Set cell. */
41 void
42 grid_view_set_cell(struct grid *gd, u_int px, u_int py,
43 const struct grid_cell *gc)
45 grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
48 /* Set padding. */
49 void
50 grid_view_set_padding(struct grid *gd, u_int px, u_int py)
52 grid_set_padding(gd, grid_view_x(gd, px), grid_view_y(gd, py));
55 /* Set cells. */
56 void
57 grid_view_set_cells(struct grid *gd, u_int px, u_int py,
58 const struct grid_cell *gc, const char *s, size_t slen)
60 grid_set_cells(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc, s,
61 slen);
64 /* Clear into history. */
65 void
66 grid_view_clear_history(struct grid *gd, u_int bg)
68 struct grid_line *gl;
69 u_int yy, last;
71 /* Find the last used line. */
72 last = 0;
73 for (yy = 0; yy < gd->sy; yy++) {
74 gl = grid_get_line(gd, grid_view_y(gd, yy));
75 if (gl->cellused != 0)
76 last = yy + 1;
78 if (last == 0) {
79 grid_view_clear(gd, 0, 0, gd->sx, gd->sy, bg);
80 return;
83 /* Scroll the lines into the history. */
84 for (yy = 0; yy < last; yy++) {
85 grid_collect_history(gd);
86 grid_scroll_history(gd, bg);
88 if (last < gd->sy)
89 grid_view_clear(gd, 0, 0, gd->sx, gd->sy - last, bg);
90 gd->hscrolled = 0;
93 /* Clear area. */
94 void
95 grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny,
96 u_int bg)
98 px = grid_view_x(gd, px);
99 py = grid_view_y(gd, py);
101 grid_clear(gd, px, py, nx, ny, bg);
104 /* Scroll region up. */
105 void
106 grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower,
107 u_int bg)
109 if (gd->flags & GRID_HISTORY) {
110 grid_collect_history(gd);
111 if (rupper == 0 && rlower == gd->sy - 1)
112 grid_scroll_history(gd, bg);
113 else {
114 rupper = grid_view_y(gd, rupper);
115 rlower = grid_view_y(gd, rlower);
116 grid_scroll_history_region(gd, rupper, rlower, bg);
118 } else {
119 rupper = grid_view_y(gd, rupper);
120 rlower = grid_view_y(gd, rlower);
121 grid_move_lines(gd, rupper, rupper + 1, rlower - rupper, bg);
125 /* Scroll region down. */
126 void
127 grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower,
128 u_int bg)
130 rupper = grid_view_y(gd, rupper);
131 rlower = grid_view_y(gd, rlower);
133 grid_move_lines(gd, rupper + 1, rupper, rlower - rupper, bg);
136 /* Insert lines. */
137 void
138 grid_view_insert_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
140 u_int sy;
142 py = grid_view_y(gd, py);
144 sy = grid_view_y(gd, gd->sy);
146 grid_move_lines(gd, py + ny, py, sy - py - ny, bg);
149 /* Insert lines in region. */
150 void
151 grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py,
152 u_int ny, u_int bg)
154 u_int ny2;
156 rlower = grid_view_y(gd, rlower);
158 py = grid_view_y(gd, py);
160 ny2 = rlower + 1 - py - ny;
161 grid_move_lines(gd, rlower + 1 - ny2, py, ny2, bg);
162 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg);
165 /* Delete lines. */
166 void
167 grid_view_delete_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
169 u_int sy;
171 py = grid_view_y(gd, py);
173 sy = grid_view_y(gd, gd->sy);
175 grid_move_lines(gd, py, py + ny, sy - py - ny, bg);
176 grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny), bg);
179 /* Delete lines inside scroll region. */
180 void
181 grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py,
182 u_int ny, u_int bg)
184 u_int ny2;
186 rlower = grid_view_y(gd, rlower);
188 py = grid_view_y(gd, py);
190 ny2 = rlower + 1 - py - ny;
191 grid_move_lines(gd, py, py + ny, ny2, bg);
192 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg);
195 /* Insert characters. */
196 void
197 grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg)
199 u_int sx;
201 px = grid_view_x(gd, px);
202 py = grid_view_y(gd, py);
204 sx = grid_view_x(gd, gd->sx);
206 if (px >= sx - 1)
207 grid_clear(gd, px, py, 1, 1, bg);
208 else
209 grid_move_cells(gd, px + nx, px, py, sx - px - nx, bg);
212 /* Delete characters. */
213 void
214 grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg)
216 u_int sx;
218 px = grid_view_x(gd, px);
219 py = grid_view_y(gd, py);
221 sx = grid_view_x(gd, gd->sx);
223 grid_move_cells(gd, px, px + nx, py, sx - px - nx, bg);
224 grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1, bg);
227 /* Convert cells into a string. */
228 char *
229 grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
231 px = grid_view_x(gd, px);
232 py = grid_view_y(gd, py);
234 return (grid_string_cells(gd, px, py, nx, NULL, 0, NULL));