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#include <gtk/gtk.h>
static void
color_changed (GObject *o, GParamSpec *pspect, gpointer data)
{
GdkRGBA color;
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (o), &color);
g_print ("color changed: %g %g %g %g\n",
color.red, color.green, color.blue, color.alpha);
}
static void
dialog_response (GtkDialog *dialog, gint response)
{
GdkRGBA color;
switch (response)
{
case GTK_RESPONSE_OK:
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (dialog), &color);
g_print ("color accepted: %g %g %g %g\n",
color.red, color.green, color.blue, color.alpha);
break;
default:
g_print ("canceled\n");
break;
}
gtk_main_quit ();
}
int
main (int argc, char *argv[])
{
GtkWidget *dialog;
gint i;
gtk_init (NULL, NULL);
dialog = gtk_color_chooser_dialog_new ("Select a color", NULL);
for (i = 1; i < argc; i++)
{
if (g_strcmp0 (argv[i], "--no-alpha") == 0)
{
g_print ("turning alpha off\n");
gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (dialog), FALSE);
}
else if (g_strcmp0 (argv[i], "--edit") == 0)
{
g_print ("starting in edit mode\n");
g_object_set (dialog, "show-editor", TRUE, NULL);
}
else if (g_strcmp0 (argv[i], "--palette") == 0)
{
const gchar *c[9] = { "red", "maroon", "yellow", "green", "blue", "magenta", "DarkOliveGreen4", "khaki2", "thistle1" };
GdkRGBA color;
GdkRGBA colors[9*9];
gint i,j;
gdouble f[5] = { 0.2, 0.35, 0.5, 0.65, 0.8 };
g_print ("setting custom palette\n");
for (i = 0; i < 9; i++)
{
gdk_rgba_parse (&color, c[i]);
for (j = 0; j < 5; j++)
{
colors[i*9 + j].red = f[j]*color.red;
colors[i*9 + j].green = f[j]*color.green;
colors[i*9 + j].blue = f[j]*color.blue;
colors[i*9 + j].alpha = 1;
}
for (j = 5; j < 9; j++)
{
colors[i*9 + j].red = f[9-j]*color.red + (1-f[9-j]);
colors[i*9 + j].green = f[9-j]*color.green + (1-f[9-j]);
colors[i*9 + j].blue = f[9-j]*color.blue + (1-f[9-j]);
colors[i*9 + j].alpha = 1;
}
}
gtk_color_chooser_add_palette (GTK_COLOR_CHOOSER (dialog),
GTK_ORIENTATION_VERTICAL,
9, 9*9,
colors);
}
else if (g_strcmp0 (argv[i], "--no-palette") == 0)
{
gtk_color_chooser_add_palette (GTK_COLOR_CHOOSER (dialog),
GTK_ORIENTATION_VERTICAL, 0, 0, NULL);
}
}
g_signal_connect (dialog, "notify::color", G_CALLBACK (color_changed), NULL);
g_signal_connect (dialog, "response", G_CALLBACK (dialog_response), NULL);
gtk_widget_show_all (dialog);
gtk_main ();
return 0;
}
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