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