1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
5: *
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.
9: *
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.
17: */
18:
19: #include <sys/types.h>
20:
21: #include <string.h>
22:
23: #include "tmux.h"
24:
25: /*
26: * Grid view functions. These work using coordinates relative to the visible
27: * screen area.
28: */
29:
30: #define grid_view_x(gd, x) (x)
31: #define grid_view_y(gd, y) ((gd)->hsize + (y))
32:
33: /* Get cell. */
34: void
35: grid_view_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
36: {
37: grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
38: }
39:
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)
44: {
45: grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
46: }
47:
48: /* Set cells. */
49: void
50: grid_view_set_cells(struct grid *gd, u_int px, u_int py,
51: const struct grid_cell *gc, const char *s, size_t slen)
52: {
53: grid_set_cells(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc, s,
54: slen);
55: }
56:
57: /* Clear into history. */
58: void
59: grid_view_clear_history(struct grid *gd, u_int bg)
60: {
61: struct grid_line *gl;
62: u_int yy, last;
63:
64: /* Find the last used line. */
65: last = 0;
66: for (yy = 0; yy < gd->sy; yy++) {
67: gl = &gd->linedata[grid_view_y(gd, yy)];
68: if (gl->cellused != 0)
69: last = yy + 1;
70: }
71: if (last == 0) {
72: grid_view_clear(gd, 0, 0, gd->sx, gd->sy, bg);
73: return;
74: }
75:
76: /* Scroll the lines into the history. */
77: for (yy = 0; yy < last; yy++) {
78: grid_collect_history(gd, bg);
79: grid_scroll_history(gd, bg);
80: }
81: if (last < gd->sy)
82: grid_view_clear(gd, 0, 0, gd->sx, gd->sy - last, bg);
83: gd->hscrolled = 0;
84: }
85:
86: /* Clear area. */
87: void
88: grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny,
89: u_int bg)
90: {
91: px = grid_view_x(gd, px);
92: py = grid_view_y(gd, py);
93:
94: grid_clear(gd, px, py, nx, ny, bg);
95: }
96:
97: /* Scroll region up. */
98: void
99: grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower)
100: {
101: if (gd->flags & GRID_HISTORY) {
102: grid_collect_history(gd, 8);
103: if (rupper == 0 && rlower == gd->sy - 1)
104: grid_scroll_history(gd, 8);
105: else {
106: rupper = grid_view_y(gd, rupper);
107: rlower = grid_view_y(gd, rlower);
108: grid_scroll_history_region(gd, rupper, rlower);
109: }
110: } else {
111: rupper = grid_view_y(gd, rupper);
112: rlower = grid_view_y(gd, rlower);
113: grid_move_lines(gd, rupper, rupper + 1, rlower - rupper, 8);
114: }
115: }
116:
117: /* Scroll region down. */
118: void
119: grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower)
120: {
121: rupper = grid_view_y(gd, rupper);
122: rlower = grid_view_y(gd, rlower);
123:
124: grid_move_lines(gd, rupper + 1, rupper, rlower - rupper, 8);
125: }
126:
127: /* Insert lines. */
128: void
129: grid_view_insert_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
130: {
131: u_int sy;
132:
133: py = grid_view_y(gd, py);
134:
135: sy = grid_view_y(gd, gd->sy);
136:
137: grid_move_lines(gd, py + ny, py, sy - py - ny, bg);
138: }
139:
140: /* Insert lines in region. */
141: void
142: grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py,
143: u_int ny, u_int bg)
144: {
145: u_int ny2;
146:
147: rlower = grid_view_y(gd, rlower);
148:
149: py = grid_view_y(gd, py);
150:
151: ny2 = rlower + 1 - py - ny;
152: grid_move_lines(gd, rlower + 1 - ny2, py, ny2, bg);
153: grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg);
154: }
155:
156: /* Delete lines. */
157: void
158: grid_view_delete_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
159: {
160: u_int sy;
161:
162: py = grid_view_y(gd, py);
163:
164: sy = grid_view_y(gd, gd->sy);
165:
166: grid_move_lines(gd, py, py + ny, sy - py - ny, bg);
167: grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny), bg);
168: }
169:
170: /* Delete lines inside scroll region. */
171: void
172: grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py,
173: u_int ny, u_int bg)
174: {
175: u_int ny2;
176:
177: rlower = grid_view_y(gd, rlower);
178:
179: py = grid_view_y(gd, py);
180:
181: ny2 = rlower + 1 - py - ny;
182: grid_move_lines(gd, py, py + ny, ny2, bg);
183: grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg);
184: }
185:
186: /* Insert characters. */
187: void
188: grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg)
189: {
190: u_int sx;
191:
192: px = grid_view_x(gd, px);
193: py = grid_view_y(gd, py);
194:
195: sx = grid_view_x(gd, gd->sx);
196:
197: if (px >= sx - 1)
198: grid_clear(gd, px, py, 1, 1, bg);
199: else
200: grid_move_cells(gd, px + nx, px, py, sx - px - nx, bg);
201: }
202:
203: /* Delete characters. */
204: void
205: grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg)
206: {
207: u_int sx;
208:
209: px = grid_view_x(gd, px);
210: py = grid_view_y(gd, py);
211:
212: sx = grid_view_x(gd, gd->sx);
213:
214: grid_move_cells(gd, px, px + nx, py, sx - px - nx, bg);
215: grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1, bg);
216: }
217:
218: /* Convert cells into a string. */
219: char *
220: grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
221: {
222: px = grid_view_x(gd, px);
223: py = grid_view_y(gd, py);
224:
225: return (grid_string_cells(gd, px, py, nx, NULL, 0, 0, 0));
226: }
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