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
|
/* $Id: fb_gdkpixbuf.c,v 1.5 2002/07/18 15:12:06 ukai Exp $ */
/**************************************************************************
fb_gdkpixbuf.c 0.2 Copyright (C) 2002, hito
**************************************************************************/
#include "fb.h"
#include "fb_img.h"
static void set_prm(IMAGE * img);
IMAGE *
fb_load_image(char *filename, int w, int h)
{
GdkPixbuf *pixbuf;
IMAGE *img;
if (filename == NULL)
return NULL;
img = malloc(sizeof(*img));
if (img == NULL)
return NULL;
pixbuf = gdk_pixbuf_new_from_file(filename);
if (pixbuf == NULL) {
free(img);
return NULL;
}
img->pixbuf = pixbuf;
set_prm(img);
fb_resize_image(img, w, h);
return img;
}
int
fb_draw_image(IMAGE * img, int x, int y, int sx, int sy, int width, int height)
{
int i, j, r, g, b, offset, bpp;
if (img == NULL)
return 1;
bpp = img->rowstride / img->width;
for (j = sy; j < sy + height && j < img->height; j++) {
offset = j * img->rowstride + bpp * sx;
for (i = sx; i < sx + width && i < img->width; i++, offset += bpp) {
r = img->pixels[offset];
g = img->pixels[offset + 1];
b = img->pixels[offset + 2];
if (img->alpha && img->pixels[offset + 3] == 0)
fb_pset(i + x - sx, j + y - sy, bg_r, bg_g, bg_b);
else
fb_pset(i + x - sx, j + y - sy, r, g, b);
}
}
return 0;
}
int
fb_resize_image(IMAGE * img, int width, int height)
{
GdkPixbuf *pixbuf;
if (width < 1 || height < 1 || img == NULL)
return 1;
if (width == img->width && height == img->height)
return 0;
pixbuf =
gdk_pixbuf_scale_simple(img->pixbuf, width, height, GDK_INTERP_HYPER);
if (pixbuf == NULL)
return 1;
gdk_pixbuf_finalize(img->pixbuf);
img->pixbuf = pixbuf;
set_prm(img);
return 0;
}
void
fb_free_image(IMAGE * img)
{
if (img == NULL)
return;
gdk_pixbuf_finalize(img->pixbuf);
free(img);
}
IMAGE *
fb_dup_image(IMAGE * img)
{
GdkPixbuf *pixbuf;
IMAGE *new_img;
if (img == NULL)
return NULL;
new_img = malloc(sizeof(*img));
if (new_img == NULL)
return NULL;
pixbuf = gdk_pixbuf_copy(img->pixbuf);
if (pixbuf == NULL) {
free(new_img);
return NULL;
}
new_img->pixbuf = pixbuf;
set_prm(new_img);
return new_img;
}
int
fb_rotate_image(IMAGE * img, int angle)
{
return 1;
}
static void
set_prm(IMAGE * img)
{
GdkPixbuf *pixbuf;
if (img == NULL)
return;
pixbuf = img->pixbuf;
img->pixels = gdk_pixbuf_get_pixels(pixbuf);
img->width = gdk_pixbuf_get_width(pixbuf);
img->height = gdk_pixbuf_get_height(pixbuf);
img->alpha = gdk_pixbuf_get_has_alpha(pixbuf);
img->rowstride = gdk_pixbuf_get_rowstride(pixbuf);
}
|
