Annotation of src/usr.bin/tmux/grid-view.c, Revision 1.8
1.8 ! nicm 1: /* $OpenBSD: grid-view.c,v 1.7 2009/10/13 15:38:37 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
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 for reading. */
34: const struct grid_cell *
35: grid_view_peek_cell(struct grid *gd, u_int px, u_int py)
36: {
37: return (grid_peek_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
38: }
39:
40: /* Get cell for writing. */
41: struct grid_cell *
42: grid_view_get_cell(struct grid *gd, u_int px, u_int py)
43: {
44: return (grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
45: }
46:
47: /* Set cell. */
48: void
49: grid_view_set_cell(
50: struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
51: {
52: grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
53: }
54:
55: /* Get UTF-8 for reading. */
56: const struct grid_utf8 *
57: grid_view_peek_utf8(struct grid *gd, u_int px, u_int py)
58: {
59: return (grid_peek_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
60: }
61:
62: /* Get UTF-8 for writing. */
63: struct grid_utf8 *
64: grid_view_get_utf8(struct grid *gd, u_int px, u_int py)
65: {
66: return (grid_get_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py)));
67: }
68:
69: /* Set UTF-8. */
70: void
71: grid_view_set_utf8(
72: struct grid *gd, u_int px, u_int py, const struct grid_utf8 *gu)
73: {
74: grid_set_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py), gu);
75: }
76:
77: /* Clear area. */
78: void
79: grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny)
80: {
81: GRID_DEBUG(gd, "px=%u, py=%u, nx=%u, ny=%u", px, py, nx, ny);
82:
83: px = grid_view_x(gd, px);
84: py = grid_view_y(gd, py);
85:
86: grid_clear(gd, px, py, nx, ny);
87: }
88:
89: /* Scroll region up. */
90: void
91: grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower)
92: {
93: GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower);
94:
1.7 nicm 95: if (gd->flags & GRID_HISTORY) {
96: grid_collect_history(gd);
97: if (rupper == 0 && rlower == gd->sy - 1)
98: grid_scroll_history(gd);
99: else {
100: rupper = grid_view_y(gd, rupper);
101: rlower = grid_view_y(gd, rlower);
102: grid_scroll_history_region(gd, rupper, rlower);
103: }
104: } else {
105: rupper = grid_view_y(gd, rupper);
106: rlower = grid_view_y(gd, rlower);
107: grid_move_lines(gd, rupper, rupper + 1, rlower - rupper);
1.1 nicm 108: }
109: }
110:
111: /* Scroll region down. */
112: void
113: grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower)
114: {
115: GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower);
116:
117: rupper = grid_view_y(gd, rupper);
118: rlower = grid_view_y(gd, rlower);
119:
120: grid_move_lines(gd, rupper + 1, rupper, rlower - rupper);
121: }
122:
123: /* Insert lines. */
124: void
125: grid_view_insert_lines(struct grid *gd, u_int py, u_int ny)
126: {
127: u_int sy;
128:
129: GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
130:
131: py = grid_view_y(gd, py);
132:
133: sy = grid_view_y(gd, gd->sy);
134:
135: grid_move_lines(gd, py + ny, py, sy - py - ny);
136: }
137:
138: /* Insert lines in region. */
139: void
1.4 nicm 140: grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny)
1.1 nicm 141: {
1.5 nicm 142: u_int ny2;
143:
1.4 nicm 144: GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny);
1.1 nicm 145:
146: rlower = grid_view_y(gd, rlower);
147:
148: py = grid_view_y(gd, py);
149:
1.5 nicm 150: ny2 = rlower + 1 - py - ny;
151: grid_move_lines(gd, rlower + 1 - ny2, py, ny2);
1.8 ! nicm 152: grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2);
1.1 nicm 153: }
154:
155: /* Delete lines. */
156: void
157: grid_view_delete_lines(struct grid *gd, u_int py, u_int ny)
158: {
159: u_int sy;
160:
161: GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
162:
163: py = grid_view_y(gd, py);
164:
165: sy = grid_view_y(gd, gd->sy);
166:
167: grid_move_lines(gd, py, py + ny, sy - py - ny);
1.8 ! nicm 168: grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny));
1.1 nicm 169: }
170:
171: /* Delete lines inside scroll region. */
172: void
1.4 nicm 173: grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny)
1.1 nicm 174: {
1.5 nicm 175: u_int ny2;
176:
1.4 nicm 177: GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny);
1.1 nicm 178:
179: rlower = grid_view_y(gd, rlower);
180:
181: py = grid_view_y(gd, py);
182:
1.5 nicm 183: ny2 = rlower + 1 - py - ny;
184: grid_move_lines(gd, py, py + ny, ny2);
1.8 ! nicm 185: grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2);
1.1 nicm 186: }
187:
188: /* Insert characters. */
189: void
190: grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx)
191: {
192: u_int sx;
193:
194: GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
195:
196: px = grid_view_x(gd, px);
197: py = grid_view_y(gd, py);
198:
199: sx = grid_view_x(gd, gd->sx);
200:
201: if (px == sx - 1)
202: grid_clear(gd, px, py, 1, 1);
203: else
1.3 nicm 204: grid_move_cells(gd, px + nx, px, py, sx - px - nx);
1.1 nicm 205: }
206:
207: /* Delete characters. */
208: void
209: grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx)
210: {
211: u_int sx;
212:
213: GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
214:
215: px = grid_view_x(gd, px);
216: py = grid_view_y(gd, py);
217:
218: sx = grid_view_x(gd, gd->sx);
219:
1.3 nicm 220: grid_move_cells(gd, px, px + nx, py, sx - px - nx);
221: grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1);
1.2 nicm 222: }
223:
224: /* Convert cells into a string. */
225: char *
226: grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
227: {
228: GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
229:
230: px = grid_view_x(gd, px);
231: py = grid_view_y(gd, py);
232:
233: return (grid_string_cells(gd, px, py, nx));
1.1 nicm 234: }
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