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5daab52661
CSS3 defines a somewhat odd syntax for rgba() colors - the rgb values are integers from 0 to 255 or percentages and the a value is a float from 0 to 1. To avoid increasing the total amount of confusion in the world, make gdk_rgb_to_string() and gdk_rgb_parse() follow this syntax rather than using floats for r, g, and b. https://bugzilla.gnome.org/show_bug.cgi?id=633762
104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
#include <locale.h>
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#include <gdk/gdk.h>
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static void
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test_color_parse (void)
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{
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GdkRGBA color;
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GdkRGBA expected;
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gboolean res;
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res = gdk_rgba_parse ("foo", &color);
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g_assert (!res);
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res = gdk_rgba_parse ("", &color);
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g_assert (!res);
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expected.red = 100/255.;
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expected.green = 90/255.;
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expected.blue = 80/255.;
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expected.alpha = 0.1;
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res = gdk_rgba_parse ("rgba(100,90,80,0.1)", &color);
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g_assert (res);
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g_assert (gdk_rgba_equal (&color, &expected));
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expected.red = 0.4;
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expected.green = 0.3;
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expected.blue = 0.2;
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expected.alpha = 0.1;
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res = gdk_rgba_parse ("rgba(40%,30%,20%,0.1)", &color);
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g_assert (res);
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g_assert (gdk_rgba_equal (&color, &expected));
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res = gdk_rgba_parse ("rgba( 40 % , 30 % , 20 % , 0.1 )", &color);
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g_assert (res);
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g_assert (gdk_rgba_equal (&color, &expected));
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expected.red = 1.0;
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expected.green = 0.0;
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expected.blue = 0.0;
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expected.alpha = 1.0;
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res = gdk_rgba_parse ("red", &color);
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g_assert (res);
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g_assert (gdk_rgba_equal (&color, &expected));
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expected.red = 0.0;
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expected.green = 0x8080 / 65535.;
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expected.blue = 1.0;
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expected.alpha = 1.0;
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res = gdk_rgba_parse ("#0080ff", &color);
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g_assert (res);
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g_assert (gdk_rgba_equal (&color, &expected));
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}
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static void
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test_color_to_string (void)
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{
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GdkRGBA rgba;
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GdkRGBA out;
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gchar *res;
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gchar *res_de;
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gchar *res_en;
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gchar *orig;
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/* Using /255. values for the r, g, b components should
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* make sure they round-trip exactly without rounding
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* from the double => integer => double conversions */
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rgba.red = 1.0;
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rgba.green = 128/255.;
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rgba.blue = 64/255.;
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rgba.alpha = 0.5;
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orig = g_strdup (setlocale (LC_ALL, NULL));
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res = gdk_rgba_to_string (&rgba);
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gdk_rgba_parse (res, &out);
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g_assert (gdk_rgba_equal (&rgba, &out));
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setlocale (LC_ALL, "de_DE.utf-8");
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res_de = gdk_rgba_to_string (&rgba);
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g_assert_cmpstr (res, ==, res_de);
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setlocale (LC_ALL, "en_US.utf-8");
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res_en = gdk_rgba_to_string (&rgba);
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g_assert_cmpstr (res, ==, res_en);
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g_free (res);
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g_free (res_de);
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g_free (res_en);
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setlocale (LC_ALL, orig);
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g_free (orig);
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}
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int
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main (int argc, char *argv[])
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{
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g_test_init (&argc, &argv, NULL);
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gdk_init (&argc, &argv);
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g_test_add_func ("/color/parse", test_color_parse);
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g_test_add_func ("/color/to-string", test_color_to_string);
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return g_test_run ();
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}
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