1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/* $Id: screen.c,v 1.82 2009-05-04 17:58:27 nicm Exp $ */
/*
* Copyright (c) 2007 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"
void screen_resize_x(struct screen *, u_int);
void screen_resize_y(struct screen *, u_int);
/* Create a new screen. */
void
screen_init(struct screen *s, u_int sx, u_int sy, u_int hlimit)
{
s->grid = grid_create(sx, sy, hlimit);
s->title = xstrdup("");
screen_reinit(s);
}
/* Reinitialise screen. */
void
screen_reinit(struct screen *s)
{
s->cx = 0;
s->cy = 0;
s->rupper = 0;
s->rlower = screen_size_y(s) - 1;
s->mode = MODE_CURSOR;
grid_clear_lines(s->grid, s->grid->hsize, s->grid->sy - 1);
screen_clear_selection(s);
}
/* Destroy a screen. */
void
screen_free(struct screen *s)
{
xfree(s->title);
grid_destroy(s->grid);
}
/* Set screen title. */
void
screen_set_title(struct screen *s, const char *title)
{
xfree(s->title);
s->title = xstrdup(title);
}
/* Resize screen. */
void
screen_resize(struct screen *s, u_int sx, u_int sy)
{
if (sx < 1)
sx = 1;
if (sy < 1)
sy = 1;
if (sx != screen_size_x(s))
screen_resize_x(s, sx);
if (sy != screen_size_y(s))
screen_resize_y(s, sy);
}
void
screen_resize_x(struct screen *s, u_int sx)
{
struct grid *gd = s->grid;
const struct grid_cell *gc;
const struct grid_utf8 *gu;
u_int xx, yy;
if (sx == 0)
fatalx("zero size");
/* If getting larger, not much to do. */
if (sx > screen_size_x(s)) {
gd->sx = sx;
return;
}
/* If getting smaller, nuke any data in lines over the new size. */
for (yy = gd->hsize; yy < gd->hsize + screen_size_y(s); yy++) {
/*
* If the character after the last is wide or padding, remove
* it and any leading padding.
*/
gc = &grid_default_cell;
for (xx = sx; xx > 0; xx--) {
gc = grid_peek_cell(gd, xx - 1, yy);
if (!(gc->flags & GRID_FLAG_PADDING))
break;
grid_set_cell(gd, xx - 1, yy, &grid_default_cell);
}
if (xx > 0 && xx != sx && gc->flags & GRID_FLAG_UTF8) {
gu = grid_peek_utf8(gd, xx - 1, yy);
if (gu->width > 1) {
grid_set_cell(
gd, xx - 1, yy, &grid_default_cell);
}
}
/* Reduce the line size. */
grid_reduce_line(gd, yy, sx);
}
if (s->cx >= sx)
s->cx = sx - 1;
gd->sx = sx;
}
void
screen_resize_y(struct screen *s, u_int sy)
{
struct grid *gd = s->grid;
u_int oy, yy, ny;
if (sy == 0)
fatalx("zero size");
/* Size decreasing. */
if (sy < screen_size_y(s)) {
oy = screen_size_y(s);
if (s->cy != 0) {
/*
* The cursor is not at the start. Try to remove as
* many lines as possible from the top. (Up to the
* cursor line.)
*/
ny = s->cy;
if (ny > oy - sy)
ny = oy - sy;
grid_view_delete_lines(gd, 0, ny);
s->cy -= ny;
oy -= ny;
}
if (sy < oy) {
/* Remove any remaining lines from the bottom. */
grid_view_delete_lines(gd, sy, oy - sy);
if (s->cy >= sy)
s->cy = sy - 1;
}
}
/* Resize line arrays. */
gd->size = xrealloc(gd->size, gd->hsize + sy, sizeof *gd->size);
gd->data = xrealloc(gd->data, gd->hsize + sy, sizeof *gd->data);
gd->usize = xrealloc(gd->usize, gd->hsize + sy, sizeof *gd->usize);
gd->udata = xrealloc(gd->udata, gd->hsize + sy, sizeof *gd->udata);
/* Size increasing. */
if (sy > screen_size_y(s)) {
oy = screen_size_y(s);
for (yy = gd->hsize + oy; yy < gd->hsize + sy; yy++) {
gd->size[yy] = 0;
gd->data[yy] = NULL;
gd->usize[yy] = 0;
gd->udata[yy] = NULL;
}
}
gd->sy = sy;
s->rupper = 0;
s->rlower = screen_size_y(s) - 1;
}
/* Set selection. */
void
screen_set_selection(struct screen *s,
u_int sx, u_int sy, u_int ex, u_int ey, struct grid_cell *gc)
{
struct screen_sel *sel = &s->sel;
memcpy(&sel->cell, gc, sizeof sel->cell);
sel->flag = 1;
if (ey < sy || (sy == ey && ex < sx)) {
sel->sx = ex; sel->sy = ey;
sel->ex = sx; sel->ey = sy;
} else {
sel->sx = sx; sel->sy = sy;
sel->ex = ex; sel->ey = ey;
}
}
/* Clear selection. */
void
screen_clear_selection(struct screen *s)
{
struct screen_sel *sel = &s->sel;
sel->flag = 0;
}
/* Check if cell in selection. */
int
screen_check_selection(struct screen *s, u_int px, u_int py)
{
struct screen_sel *sel = &s->sel;
if (!sel->flag || py < sel->sy || py > sel->ey)
return (0);
if (py == sel->sy && py == sel->ey) {
if (px < sel->sx || px > sel->ex)
return (0);
return (1);
}
if ((py == sel->sy && px < sel->sx) || (py == sel->ey && px > sel->ex))
return (0);
return (1);
}
|
