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
|
// 6 september 2015
#include "uipriv_unix.h"
#include "draw.h"
void m2c(uiDrawMatrix *m, cairo_matrix_t *c)
{
c->xx = m->M11;
c->yx = m->M12;
c->xy = m->M21;
c->yy = m->M22;
c->x0 = m->M31;
c->y0 = m->M32;
}
static void c2m(cairo_matrix_t *c, uiDrawMatrix *m)
{
m->M11 = c->xx;
m->M12 = c->yx;
m->M21 = c->xy;
m->M22 = c->yy;
m->M31 = c->x0;
m->M32 = c->y0;
}
void uiDrawMatrixTranslate(uiDrawMatrix *m, double x, double y)
{
cairo_matrix_t c;
m2c(m, &c);
cairo_matrix_translate(&c, x, y);
c2m(&c, m);
}
void uiDrawMatrixScale(uiDrawMatrix *m, double xCenter, double yCenter, double x, double y)
{
cairo_matrix_t c;
double xt, yt;
m2c(m, &c);
xt = x;
yt = y;
scaleCenter(xCenter, yCenter, &xt, &yt);
cairo_matrix_translate(&c, xt, yt);
cairo_matrix_scale(&c, x, y);
cairo_matrix_translate(&c, -xt, -yt);
c2m(&c, m);
}
void uiDrawMatrixRotate(uiDrawMatrix *m, double x, double y, double amount)
{
cairo_matrix_t c;
m2c(m, &c);
cairo_matrix_translate(&c, x, y);
cairo_matrix_rotate(&c, amount);
cairo_matrix_translate(&c, -x, -y);
c2m(&c, m);
}
void uiDrawMatrixSkew(uiDrawMatrix *m, double x, double y, double xamount, double yamount)
{
fallbackSkew(m, x, y, xamount, yamount);
}
void uiDrawMatrixMultiply(uiDrawMatrix *dest, uiDrawMatrix *src)
{
cairo_matrix_t c;
cairo_matrix_t d;
m2c(dest, &c);
m2c(src, &d);
cairo_matrix_multiply(&c, &c, &d);
c2m(&c, dest);
}
int uiDrawMatrixInvertible(uiDrawMatrix *m)
{
cairo_matrix_t c;
m2c(m, &c);
return cairo_matrix_invert(&c) == CAIRO_STATUS_SUCCESS;
}
int uiDrawMatrixInvert(uiDrawMatrix *m)
{
cairo_matrix_t c;
m2c(m, &c);
if (cairo_matrix_invert(&c) != CAIRO_STATUS_SUCCESS)
return 0;
c2m(&c, m);
return 1;
}
void uiDrawMatrixTransformPoint(uiDrawMatrix *m, double *x, double *y)
{
cairo_matrix_t c;
m2c(m, &c);
cairo_matrix_transform_point(&c, x, y);
}
void uiDrawMatrixTransformSize(uiDrawMatrix *m, double *x, double *y)
{
cairo_matrix_t c;
m2c(m, &c);
cairo_matrix_transform_distance(&c, x, y);
}
|