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
|
#include <gtk.h>
#include "gdk/gdkmemorytextureprivate.h"
static void
compare_pixels (int width,
int height,
guchar *data1,
gsize stride1,
guchar *data2,
gsize stride2)
{
int x, y;
for (y = 0; y < height; y++)
{
const guint32 *p1 = (const guint32*) (data1 + y * stride1);
const guint32 *p2 = (const guint32*) (data2 + y * stride2);
for (x = 0; x < width; x++)
{
g_assert_cmphex (p1[x], ==, p2[x]);
}
}
}
static void
test_texture_from_pixbuf (void)
{
GdkPixbuf *pixbuf;
GdkTexture *texture;
GError *error = NULL;
guchar *data;
int width, height;
gsize stride;
cairo_surface_t *surface;
cairo_t *cr;
pixbuf = gdk_pixbuf_new_from_resource ("/org/gtk/libgtk/icons/16x16/places/user-trash.png", &error);
g_assert_no_error (error);
g_assert_nonnull (pixbuf);
g_assert_true (gdk_pixbuf_get_has_alpha (pixbuf));
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
texture = gdk_texture_new_for_pixbuf (pixbuf);
g_assert_nonnull (texture);
g_assert_cmpint (gdk_texture_get_width (texture), ==, width);
g_assert_cmpint (gdk_texture_get_height (texture), ==, height);
stride = 4 * width;
data = g_new0 (guchar, stride * height);
gdk_texture_download (texture, data, stride);
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
cr = cairo_create (surface);
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
compare_pixels (width, height,
data, stride,
cairo_image_surface_get_data (surface),
cairo_image_surface_get_stride (surface));
g_free (data);
g_object_unref (pixbuf);
g_object_unref (texture);
cairo_surface_destroy (surface);
}
static void
test_texture_from_resource (void)
{
GdkTexture *texture;
int width, height;
texture = gdk_texture_new_from_resource ("/org/gtk/libgtk/icons/16x16/places/user-trash.png");
g_assert_nonnull (texture);
g_object_get (texture,
"width", &width,
"height", &height,
NULL);
g_assert_cmpint (width, ==, 16);
g_assert_cmpint (height, ==, 16);
g_object_unref (texture);
}
static void
test_texture_save_to_png (void)
{
GdkTexture *texture;
GError *error = NULL;
GFile *file;
GdkTexture *texture2;
texture = gdk_texture_new_from_resource ("/org/gtk/libgtk/icons/16x16/places/user-trash.png");
gdk_texture_save_to_png (texture, "test.png");
file = g_file_new_for_path ("test.png");
texture2 = gdk_texture_new_from_file (file, &error);
g_object_unref (file);
g_assert_no_error (error);
g_object_unref (texture);
g_object_unref (texture2);
}
static void
test_texture_subtexture (void)
{
cairo_t *cr;
cairo_surface_t *surface;
cairo_pattern_t *pattern;
GdkTexture *texture, *subtexture;
guchar *data, *subdata;
gsize stride, substride;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 64, 64);
cr = cairo_create (surface);
pattern = cairo_pattern_create_linear (0, 0, 64, 64);
cairo_pattern_add_color_stop_rgba (pattern, 0, 1, 0, 0, 0.2);
cairo_pattern_add_color_stop_rgba (pattern, 1, 1, 0, 1, 1);
cairo_set_source (cr, pattern);
cairo_paint (cr);
texture = gdk_texture_new_for_surface (surface);
cairo_pattern_destroy (pattern);
cairo_destroy (cr);
cairo_surface_destroy (surface);
subtexture = gdk_memory_texture_new_subtexture (GDK_MEMORY_TEXTURE (texture), 0, 0, 32, 32);
g_assert_cmpint (gdk_texture_get_width (subtexture), ==, 32);
g_assert_cmpint (gdk_texture_get_height (subtexture), ==, 32);
data = g_new0 (guchar, 64 * 64 * 4);
stride = 64 * 4;
gdk_texture_download (texture, data, stride);
subdata = g_new0 (guchar, 32 * 32 * 4);
substride = 32 * 4;
gdk_texture_download (subtexture, subdata, substride);
compare_pixels (32, 32,
data, stride,
subdata, substride);
g_free (data);
g_free (subdata);
g_object_unref (subtexture);
g_object_unref (texture);
}
int
main (int argc, char *argv[])
{
/* We want to use resources from libgtk, so we need gtk initialized */
gtk_test_init (&argc, &argv, NULL);
g_test_add_func ("/texture/from-pixbuf", test_texture_from_pixbuf);
g_test_add_func ("/texture/from-resource", test_texture_from_resource);
g_test_add_func ("/texture/save-to-png", test_texture_save_to_png);
g_test_add_func ("/texture/subtexture", test_texture_subtexture);
return g_test_run ();
}
|
