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
|
/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* 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 <stdlib.h>
#include <string.h>
#include "tmux.h"
static struct images all_images = TAILQ_HEAD_INITIALIZER(all_images);
static u_int all_images_count;
static void
image_free(struct image *im)
{
struct screen *s = im->s;
TAILQ_REMOVE(&all_images, im, all_entry);
all_images_count--;
TAILQ_REMOVE(&s->images, im, entry);
sixel_free(im->data);
free(im->fallback);
free(im);
}
int
image_free_all(struct screen *s)
{
struct image *im, *im1;
int redraw = !TAILQ_EMPTY(&s->images);
TAILQ_FOREACH_SAFE(im, &s->images, entry, im1)
image_free(im);
return (redraw);
}
/* Create text placeholder for an image. */
static void
image_fallback(char **ret, u_int sx, u_int sy)
{
char *buf, *label;
u_int py, size, lsize;
/* Allocate first line. */
lsize = xasprintf(&label, "SIXEL IMAGE (%ux%u)\r\n", sx, sy) + 1;
if (sx < lsize - 3)
size = lsize - 1;
else
size = sx + 2;
/* Remaining lines. Every placeholder line has \r\n at the end. */
size += (sx + 2) * (sy - 1) + 1;
*ret = buf = xmalloc(size);
/* Render first line. */
if (sx < lsize - 3) {
memcpy(buf, label, lsize);
buf += lsize - 1;
} else {
memcpy(buf, label, lsize - 3);
buf += lsize - 3;
memset(buf, '+', sx - lsize + 3);
buf += sx - lsize + 3;
snprintf(buf, 3, "\r\n");
buf += 2;
}
/* Remaining lines. */
for (py = 1; py < sy; py++) {
memset(buf, '+', sx);
buf += sx;
snprintf(buf, 3, "\r\n");
buf += 2;
}
free(label);
}
struct image*
image_store(struct screen *s, struct sixel_image *si)
{
struct image *im;
im = xcalloc(1, sizeof *im);
im->s = s;
im->data = si;
im->px = s->cx;
im->py = s->cy;
sixel_size_in_cells(si, &im->sx, &im->sy);
image_fallback(&im->fallback, im->sx, im->sy);
TAILQ_INSERT_TAIL(&s->images, im, entry);
TAILQ_INSERT_TAIL(&all_images, im, all_entry);
if (++all_images_count == 10/*XXX*/)
image_free(TAILQ_FIRST(&all_images));
return (im);
}
int
image_check_line(struct screen *s, u_int py, u_int ny)
{
struct image *im, *im1;
int redraw = 0;
TAILQ_FOREACH_SAFE(im, &s->images, entry, im1) {
if (py + ny > im->py && py < im->py + im->sy) {
image_free(im);
redraw = 1;
}
}
return (redraw);
}
int
image_check_area(struct screen *s, u_int px, u_int py, u_int nx, u_int ny)
{
struct image *im, *im1;
int redraw = 0;
TAILQ_FOREACH_SAFE(im, &s->images, entry, im1) {
if (py + ny <= im->py || py >= im->py + im->sy)
continue;
if (px + nx <= im->px || px >= im->px + im->sx)
continue;
image_free(im);
redraw = 1;
}
return (redraw);
}
int
image_scroll_up(struct screen *s, u_int lines)
{
struct image *im, *im1;
int redraw = 0;
u_int sx, sy;
struct sixel_image *new;
TAILQ_FOREACH_SAFE(im, &s->images, entry, im1) {
if (im->py >= lines) {
im->py -= lines;
redraw = 1;
continue;
}
if (im->py + im->sy <= lines) {
image_free(im);
redraw = 1;
continue;
}
sx = im->sx;
sy = (im->py + im->sy) - lines;
new = sixel_scale(im->data, 0, 0, 0, im->sy - sy, sx, sy, 1);
sixel_free(im->data);
im->data = new;
im->py = 0;
sixel_size_in_cells(im->data, &im->sx, &im->sy);
free(im->fallback);
image_fallback(&im->fallback, im->sx, im->sy);
redraw = 1;
}
return (redraw);
}
|
