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
|
#include <limits.h>
#include <math.h>
#include <stdbool.h>
#include <stdlib.h>
#include <wlr/util/box.h>
#include <wlr/util/log.h>
void wlr_box_closest_point(const struct wlr_box *box, double x, double y,
double *dest_x, double *dest_y) {
// if box is empty, then it contains no points, so no closest point either
if (box->width <= 0 || box->height <= 0) {
*dest_x = NAN;
*dest_y = NAN;
return;
}
// find the closest x point
if (x < box->x) {
*dest_x = box->x;
} else if (x >= box->x + box->width) {
*dest_x = box->x + box->width - 1;
} else {
*dest_x = x;
}
// find closest y point
if (y < box->y) {
*dest_y = box->y;
} else if (y >= box->y + box->height) {
*dest_y = box->y + box->height - 1;
} else {
*dest_y = y;
}
}
bool wlr_box_empty(const struct wlr_box *box) {
return box == NULL || box->width <= 0 || box->height <= 0;
}
bool wlr_box_intersection(struct wlr_box *dest, const struct wlr_box *box_a,
const struct wlr_box *box_b) {
bool a_empty = wlr_box_empty(box_a);
bool b_empty = wlr_box_empty(box_b);
if (a_empty || b_empty) {
dest->x = 0;
dest->y = 0;
dest->width = -100;
dest->height = -100;
return false;
}
int x1 = fmax(box_a->x, box_b->x);
int y1 = fmax(box_a->y, box_b->y);
int x2 = fmin(box_a->x + box_a->width, box_b->x + box_b->width);
int y2 = fmin(box_a->y + box_a->height, box_b->y + box_b->height);
dest->x = x1;
dest->y = y1;
dest->width = x2 - x1;
dest->height = y2 - y1;
return !wlr_box_empty(dest);
}
bool wlr_box_contains_point(const struct wlr_box *box, double x, double y) {
if (wlr_box_empty(box)) {
return false;
} else {
return x >= box->x && x < box->x + box->width &&
y >= box->y && y < box->y + box->height;
}
}
void wlr_box_transform(struct wlr_box *dest, const struct wlr_box *box,
enum wl_output_transform transform, int width, int height) {
struct wlr_box src = *box;
if (transform % 2 == 0) {
dest->width = src.width;
dest->height = src.height;
} else {
dest->width = src.height;
dest->height = src.width;
}
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
dest->x = src.x;
dest->y = src.y;
break;
case WL_OUTPUT_TRANSFORM_90:
dest->x = height - src.y - src.height;
dest->y = src.x;
break;
case WL_OUTPUT_TRANSFORM_180:
dest->x = width - src.x - src.width;
dest->y = height - src.y - src.height;
break;
case WL_OUTPUT_TRANSFORM_270:
dest->x = src.y;
dest->y = width - src.x - src.width;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dest->x = width - src.x - src.width;
dest->y = src.y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dest->x = src.y;
dest->y = src.x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dest->x = src.x;
dest->y = height - src.y - src.height;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dest->x = height - src.y - src.height;
dest->y = width - src.x - src.width;
break;
}
}
void wlr_fbox_transform(struct wlr_fbox *dest, const struct wlr_fbox *box,
enum wl_output_transform transform, double width, double height) {
struct wlr_fbox src = *box;
if (transform % 2 == 0) {
dest->width = src.width;
dest->height = src.height;
} else {
dest->width = src.height;
dest->height = src.width;
}
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
dest->x = src.x;
dest->y = src.y;
break;
case WL_OUTPUT_TRANSFORM_90:
dest->x = height - src.y - src.height;
dest->y = src.x;
break;
case WL_OUTPUT_TRANSFORM_180:
dest->x = width - src.x - src.width;
dest->y = height - src.y - src.height;
break;
case WL_OUTPUT_TRANSFORM_270:
dest->x = src.y;
dest->y = width - src.x - src.width;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dest->x = width - src.x - src.width;
dest->y = src.y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dest->x = src.y;
dest->y = src.x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dest->x = src.x;
dest->y = height - src.y - src.height;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dest->x = height - src.y - src.height;
dest->y = width - src.x - src.width;
break;
}
}
|
