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[test/create-from-png] Check loading of various colour types.

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Check that when loading from index/gray/rgb PNGs, with and without
alpha/transparency, that the correct surface is generated by read_png(),
i.e. if the PNG contains an alpha channel then the image must be an
ARGB32 surface.
This commit is contained in:
Chris Wilson 2008-04-21 19:44:11 +01:00
parent f2f91db131
commit a313547f6d
7 changed files with 121 additions and 0 deletions
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test/create-from-png.c
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@ -145,5 +145,126 @@ main (void)
}
cairo_surface_destroy (surface);
/* check that loading alpha/opaque PNGs generate the correct surfaces */
xasprintf (&filename, "%s/%s", srcdir ? srcdir : ".",
"create-from-png-alpha-ref.png");
surface = cairo_image_surface_create_from_png (filename);
if (cairo_surface_status (surface)) {
cairo_test_log ("Error reading PNG image %s: %s\n",
filename,
cairo_status_to_string (cairo_surface_status (surface)));
free (filename);
return CAIRO_TEST_FAILURE;
}
if (cairo_image_surface_get_format (surface) != CAIRO_FORMAT_ARGB32) {
cairo_test_log ("Error reading PNG image %s: did not create an ARGB32 image\n",
filename);
cairo_surface_destroy (surface);
return CAIRO_TEST_FAILURE;
}
free (filename);
cairo_surface_destroy (surface);
xasprintf (&filename, "%s/%s", srcdir ? srcdir : ".",
"create-from-png-ref.png");
surface = cairo_image_surface_create_from_png (filename);
if (cairo_surface_status (surface)) {
cairo_test_log ("Error reading PNG image %s: %s\n",
filename,
cairo_status_to_string (cairo_surface_status (surface)));
free (filename);
return CAIRO_TEST_FAILURE;
}
if (cairo_image_surface_get_format (surface) != CAIRO_FORMAT_RGB24) {
cairo_test_log ("Error reading PNG image %s: did not create an RGB24 image\n",
filename);
cairo_surface_destroy (surface);
return CAIRO_TEST_FAILURE;
}
free (filename);
cairo_surface_destroy (surface);
/* check paletted PNGs */
xasprintf (&filename, "%s/%s", srcdir ? srcdir : ".",
"create-from-png-indexed-alpha-ref.png");
surface = cairo_image_surface_create_from_png (filename);
if (cairo_surface_status (surface)) {
cairo_test_log ("Error reading PNG image %s: %s\n",
filename,
cairo_status_to_string (cairo_surface_status (surface)));
free (filename);
return CAIRO_TEST_FAILURE;
}
if (cairo_image_surface_get_format (surface) != CAIRO_FORMAT_ARGB32) {
cairo_test_log ("Error reading PNG image %s: did not create an ARGB32 image\n",
filename);
free (filename);
cairo_surface_destroy (surface);
return CAIRO_TEST_FAILURE;
}
free (filename);
cairo_surface_destroy (surface);
xasprintf (&filename, "%s/%s", srcdir ? srcdir : ".",
"create-from-png-indexed-ref.png");
surface = cairo_image_surface_create_from_png (filename);
if (cairo_surface_status (surface)) {
cairo_test_log ("Error reading PNG image %s: %s\n",
filename,
cairo_status_to_string (cairo_surface_status (surface)));
free (filename);
return CAIRO_TEST_FAILURE;
}
if (cairo_image_surface_get_format (surface) != CAIRO_FORMAT_RGB24) {
cairo_test_log ("Error reading PNG image %s: did not create an RGB24 image\n",
filename);
free (filename);
cairo_surface_destroy (surface);
return CAIRO_TEST_FAILURE;
}
free (filename);
cairo_surface_destroy (surface);
/* check grayscale PNGs */
xasprintf (&filename, "%s/%s", srcdir ? srcdir : ".",
"create-from-png-gray-alpha-ref.png");
surface = cairo_image_surface_create_from_png (filename);
if (cairo_surface_status (surface)) {
cairo_test_log ("Error reading PNG image %s: %s\n",
filename,
cairo_status_to_string (cairo_surface_status (surface)));
free (filename);
return CAIRO_TEST_FAILURE;
}
if (cairo_image_surface_get_format (surface) != CAIRO_FORMAT_ARGB32) {
cairo_test_log ("Error reading PNG image %s: did not create an ARGB32 image\n",
filename);
free (filename);
cairo_surface_destroy (surface);
return CAIRO_TEST_FAILURE;
}
free (filename);
cairo_surface_destroy (surface);
xasprintf (&filename, "%s/%s", srcdir ? srcdir : ".",
"create-from-png-gray-ref.png");
surface = cairo_image_surface_create_from_png (filename);
if (cairo_surface_status (surface)) {
cairo_test_log ("Error reading PNG image %s: %s\n",
filename,
cairo_status_to_string (cairo_surface_status (surface)));
free (filename);
return CAIRO_TEST_FAILURE;
}
if (cairo_image_surface_get_format (surface) != CAIRO_FORMAT_RGB24) {
cairo_test_log ("Error reading PNG image %s: did not create an RGB24 image\n",
filename);
free (filename);
cairo_surface_destroy (surface);
return CAIRO_TEST_FAILURE;
}
free (filename);
cairo_surface_destroy (surface);
return cairo_test (&test);
}