Making a splash screen with GTK+(2.0)

Thetargos · 03-19-2004, 09:31 PM

Hi again, guys.

I'm looking for some way to make a splash screen for an application I already have. Following the same logic as to make a pixmap appear on a button, I've managed to write a little function that does something like this (it does not use window decorations and only contains one box which holds the pixmap I want to show). My problem is that (since I did not add any event handler nor callback to it) the window just sits there, how can I make a timed "delete_event" call and at the same time delay a little bit the showing of the main application window?

Thanks!

Thetargos · 03-19-2004, 10:56 PM

Ok, I've figured out how to make the actual splash screen using an undecorated window, but now I face the fact that the window gets created on the top-left corner, how do I make it appear in the center of the screen always? edit: I should really first look into the API reference before posting

BTW I think the best way to have it temporized would be to do so as the actual callback function, that while it's running the main window will not appear. Here's the code that (thus far) I have:

Code:

/* Test program to see if a splash image can be loaded prior a program window */

#include <gtk/gtk.h>

static GtkWidget *splash (void)
{
	static GtkWidget *splash;
	GtkWidget *imgbox;
	GtkWidget *image;
		
	/* Splash window */
	splash = gtk_window_new (GTK_WINDOW_TOPLEVEL);

		/* Not managed window */
	gtk_window_set_decorated (GTK_WINDOW (splash), FALSE);
        gtk_window_set_psoition (GTK_WINDOW (splash), GTK_WIN_POS_CENTER_ALWAYS);
	
	/* Image container box */
	imgbox = gtk_hbox_new (FALSE, 0);
	gtk_container_add (GTK_CONTAINER (splash), imgbox);
	
	/* Image */
	image = gtk_image_new_from_file ("/path/to/image/image.xpm");
	gtk_box_pack_start (GTK_BOX (imgbox), image, FALSE, FALSE, 0);
	
	/* Set the signals */
	g_signal_connect (G_OBJECT (splash), "destroy", G_CALLBACK (gtk_main_quit),NULL);
	g_signal_connect (G_OBJECT (splash), "delete_event", G_CALLBACK (gtk_main_quit), NULL);
	
	gtk_widget_show_all (splash);
	
}

int main (int argc, char **argv)
{
	
	gtk_init (&argc, &argv);
		
	splash ();
	
	gtk_main ();
	
	return 0;
}

As you can see the only way to destroy the window right now is by catching the delete_event event from the WM (in my case with FC1 and GNOME, alt-F4)

Now I've gotta get to write the code for the timed window kill

revof11 · 04-19-2004, 01:02 PM

I'm completely new at GTK+... but...

Right now I am just adding a timer to my application.
Here's a snippit of what I am doing:

Before calling gtk_main
gtk_timeout_add(1000, window_timeout, NULL);

The window_timeout function
gint window_timeout(gpointer data)
{
if (++timer == 2)
gtk_main_quit();

return TRUE;
}

Hope that works for you (if you haven't already gotten something)...