Annotation of src/usr.bin/tmux/grid-view.c, Revision 1.6
1.6 ! nicm 1: /* $OpenBSD: grid-view.c,v 1.5 2009/07/09 07:58:14 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:
1.6 ! nicm 95: if (gd->flags & GRID_HISTORY && rupper == 0 && rlower == gd->sy - 1) {
1.1 nicm 96: grid_scroll_line(gd);
97: return;
98: }
99:
100: rupper = grid_view_y(gd, rupper);
101: rlower = grid_view_y(gd, rlower);
102:
103: grid_move_lines(gd, rupper, rupper + 1, rlower - rupper);
104: }
105:
106: /* Scroll region down. */
107: void
108: grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower)
109: {
110: GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower);
111:
112: rupper = grid_view_y(gd, rupper);
113: rlower = grid_view_y(gd, rlower);
114:
115: grid_move_lines(gd, rupper + 1, rupper, rlower - rupper);
116: }
117:
118: /* Insert lines. */
119: void
120: grid_view_insert_lines(struct grid *gd, u_int py, u_int ny)
121: {
122: u_int sy;
123:
124: GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
125:
126: py = grid_view_y(gd, py);
127:
128: sy = grid_view_y(gd, gd->sy);
129:
130: grid_move_lines(gd, py + ny, py, sy - py - ny);
131: }
132:
133: /* Insert lines in region. */
134: void
1.4 nicm 135: grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny)
1.1 nicm 136: {
1.5 nicm 137: u_int ny2;
138:
1.4 nicm 139: GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny);
1.1 nicm 140:
141: rlower = grid_view_y(gd, rlower);
142:
143: py = grid_view_y(gd, py);
144:
1.5 nicm 145: ny2 = rlower + 1 - py - ny;
146: grid_move_lines(gd, rlower + 1 - ny2, py, ny2);
147: grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2);
1.1 nicm 148: }
149:
150: /* Delete lines. */
151: void
152: grid_view_delete_lines(struct grid *gd, u_int py, u_int ny)
153: {
154: u_int sy;
155:
156: GRID_DEBUG(gd, "py=%u, ny=%u", py, ny);
157:
158: py = grid_view_y(gd, py);
159:
160: sy = grid_view_y(gd, gd->sy);
161:
162: grid_move_lines(gd, py, py + ny, sy - py - ny);
1.5 nicm 163: grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny));
1.1 nicm 164: }
165:
166: /* Delete lines inside scroll region. */
167: void
1.4 nicm 168: grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny)
1.1 nicm 169: {
1.5 nicm 170: u_int ny2;
171:
1.4 nicm 172: GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny);
1.1 nicm 173:
174: rlower = grid_view_y(gd, rlower);
175:
176: py = grid_view_y(gd, py);
177:
1.5 nicm 178: ny2 = rlower + 1 - py - ny;
179: grid_move_lines(gd, py, py + ny, ny2);
180: grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2);
1.1 nicm 181: }
182:
183: /* Insert characters. */
184: void
185: grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx)
186: {
187: u_int sx;
188:
189: GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
190:
191: px = grid_view_x(gd, px);
192: py = grid_view_y(gd, py);
193:
194: sx = grid_view_x(gd, gd->sx);
195:
196: if (px == sx - 1)
197: grid_clear(gd, px, py, 1, 1);
198: else
1.3 nicm 199: grid_move_cells(gd, px + nx, px, py, sx - px - nx);
1.1 nicm 200: }
201:
202: /* Delete characters. */
203: void
204: grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx)
205: {
206: u_int sx;
207:
208: GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
209:
210: px = grid_view_x(gd, px);
211: py = grid_view_y(gd, py);
212:
213: sx = grid_view_x(gd, gd->sx);
214:
1.3 nicm 215: grid_move_cells(gd, px, px + nx, py, sx - px - nx);
216: grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1);
1.2 nicm 217: }
218:
219: /* Convert cells into a string. */
220: char *
221: grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
222: {
223: GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
224:
225: px = grid_view_x(gd, px);
226: py = grid_view_y(gd, py);
227:
228: return (grid_string_cells(gd, px, py, nx));
1.1 nicm 229: }
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