1 #include <gtk.h>
2
3 static gboolean
compare_pixels(int width,int height,guchar * data1,gsize stride1,guchar * data2,gsize stride2)4 compare_pixels (int width,
5 int height,
6 guchar *data1,
7 gsize stride1,
8 guchar *data2,
9 gsize stride2)
10 {
11 int i;
12 for (i = 0; i < height; i++)
13 {
14 gconstpointer p1 = data1 + i * stride1;
15 gconstpointer p2 = data2 + i * stride2;
16 if (memcmp (p1, p2, width * 4) != 0)
17 return FALSE;
18 }
19 return TRUE;
20 }
21
22 static void
test_texture_from_pixbuf(void)23 test_texture_from_pixbuf (void)
24 {
25 GdkPixbuf *pixbuf;
26 GdkTexture *texture;
27 GError *error = NULL;
28 guchar *data;
29 int width, height;
30 gsize stride;
31 cairo_surface_t *surface;
32 cairo_t *cr;
33
34 pixbuf = gdk_pixbuf_new_from_resource ("/org/gtk/libgtk/icons/16x16/places/user-trash.png", &error);
35 g_assert_no_error (error);
36 g_assert_nonnull (pixbuf);
37 g_assert_true (gdk_pixbuf_get_has_alpha (pixbuf));
38
39 width = gdk_pixbuf_get_width (pixbuf);
40 height = gdk_pixbuf_get_height (pixbuf);
41
42 texture = gdk_texture_new_for_pixbuf (pixbuf);
43
44 g_assert_nonnull (texture);
45 g_assert_cmpint (gdk_texture_get_width (texture), ==, width);
46 g_assert_cmpint (gdk_texture_get_height (texture), ==, height);
47
48 stride = 4 * width;
49 data = g_new0 (guchar, stride * height);
50 gdk_texture_download (texture, data, stride);
51
52 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
53 cr = cairo_create (surface);
54 gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
55 cairo_paint (cr);
56 cairo_destroy (cr);
57
58 g_assert_true (compare_pixels (width, height,
59 data, stride,
60 cairo_image_surface_get_data (surface),
61 cairo_image_surface_get_stride (surface)));
62
63 g_free (data);
64
65 g_object_unref (pixbuf);
66 g_object_unref (texture);
67 cairo_surface_destroy (surface);
68 }
69
70 static void
test_texture_from_resource(void)71 test_texture_from_resource (void)
72 {
73 GdkTexture *texture;
74 int width, height;
75
76 texture = gdk_texture_new_from_resource ("/org/gtk/libgtk/icons/16x16/places/user-trash.png");
77
78 g_assert_nonnull (texture);
79 g_object_get (texture,
80 "width", &width,
81 "height", &height,
82 NULL);
83 g_assert_cmpint (width, ==, 16);
84 g_assert_cmpint (height, ==, 16);
85
86 g_object_unref (texture);
87 }
88
89 static void
test_texture_save_to_png(void)90 test_texture_save_to_png (void)
91 {
92 GdkTexture *texture;
93 GError *error = NULL;
94 GFile *file;
95 GdkTexture *texture2;
96
97 texture = gdk_texture_new_from_resource ("/org/gtk/libgtk/icons/16x16/places/user-trash.png");
98
99 gdk_texture_save_to_png (texture, "test.png");
100 file = g_file_new_for_path ("test.png");
101 texture2 = gdk_texture_new_from_file (file, &error);
102 g_object_unref (file);
103 g_assert_no_error (error);
104
105 g_object_unref (texture);
106 g_object_unref (texture2);
107 }
108
109 int
main(int argc,char * argv[])110 main (int argc, char *argv[])
111 {
112 /* We want to use resources from libgtk, so we need gtk initialized */
113 gtk_test_init (&argc, &argv, NULL);
114
115 g_test_add_func ("/texture/from-pixbuf", test_texture_from_pixbuf);
116 g_test_add_func ("/texture/from-resource", test_texture_from_resource);
117 g_test_add_func ("/texture/save-to-png", test_texture_save_to_png);
118
119 return g_test_run ();
120 }
121
