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>Code Examples</H1
><P
>Below are the code examples that are used in the above text
which are not included in complete form elsewhere.</P
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="SEC-TICTACTOE"
>Tictactoe</A
></H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2906"
>tictactoe.h</A
></H2
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><PRE
CLASS="PROGRAMLISTING"
>/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __TICTACTOE_H__
#define __TICTACTOE_H__
#include <glib.h>
#include <glib-object.h>
#include <gtk/gtktable.h>
G_BEGIN_DECLS
#define TICTACTOE_TYPE (tictactoe_get_type ())
#define TICTACTOE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TICTACTOE_TYPE, Tictactoe))
#define TICTACTOE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TICTACTOE_TYPE, TictactoeClass))
#define IS_TICTACTOE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TICTACTOE_TYPE))
#define IS_TICTACTOE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TICTACTOE_TYPE))
typedef struct _Tictactoe Tictactoe;
typedef struct _TictactoeClass TictactoeClass;
struct _Tictactoe
{
GtkTable table;
GtkWidget *buttons[3][3];
};
struct _TictactoeClass
{
GtkTableClass parent_class;
void (* tictactoe) (Tictactoe *ttt);
};
GType tictactoe_get_type (void);
GtkWidget* tictactoe_new (void);
void tictactoe_clear (Tictactoe *ttt);
G_END_DECLS
#endif /* __TICTACTOE_H__ */ </PRE
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><H2
CLASS="SECT2"
><A
NAME="AEN2909"
>tictactoe.c</A
></H2
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><TD
><PRE
CLASS="PROGRAMLISTING"
> /* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gtk/gtksignal.h>
#include <gtk/gtktable.h>
#include <gtk/gtktogglebutton.h>
#include "tictactoe.h"
enum {
TICTACTOE_SIGNAL,
LAST_SIGNAL
};
static void tictactoe_class_init (TictactoeClass *klass);
static void tictactoe_init (Tictactoe *ttt);
static void tictactoe_toggle (GtkWidget *widget, Tictactoe *ttt);
static guint tictactoe_signals[LAST_SIGNAL] = { 0 };
GType
tictactoe_get_type (void)
{
static GType ttt_type = 0;
if (!ttt_type)
{
const GTypeInfo ttt_info =
{
sizeof (TictactoeClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) tictactoe_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (Tictactoe),
0,
(GInstanceInitFunc) tictactoe_init,
};
ttt_type = g_type_register_static (GTK_TYPE_TABLE, "Tictactoe", &ttt_info, 0);
}
return ttt_type;
}
static void
tictactoe_class_init (TictactoeClass *klass)
{
tictactoe_signals[TICTACTOE_SIGNAL] = g_signal_new ("tictactoe",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (TictactoeClass, tictactoe),
NULL,
NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
tictactoe_init (Tictactoe *ttt)
{
gint i,j;
gtk_table_resize (GTK_TABLE (ttt), 3, 3);
gtk_table_set_homogeneous (GTK_TABLE (ttt), TRUE);
for (i=0;i<3; i++)
for (j=0;j<3; j++) {
ttt->buttons[i][j] = gtk_toggle_button_new ();
gtk_table_attach_defaults (GTK_TABLE (ttt), ttt->buttons[i][j],
i, i+1, j, j+1);
g_signal_connect (ttt->buttons[i][j], "toggled",
G_CALLBACK (tictactoe_toggle), (gpointer) ttt);
gtk_widget_set_size_request (ttt->buttons[i][j], 20, 20);
gtk_widget_show (ttt->buttons[i][j]);
}
}
GtkWidget*
tictactoe_new ()
{
return GTK_WIDGET (g_object_new (tictactoe_get_type (), NULL));
}
void
tictactoe_clear (Tictactoe *ttt)
{
int i,j;
for (i = 0; i<3; i++)
for (j = 0; j<3; j++)
{
g_signal_handlers_block_matched (G_OBJECT (ttt->buttons[i][j]),
G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, ttt);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (ttt->buttons[i][j]),
FALSE);
g_signal_handlers_unblock_matched (G_OBJECT (ttt->buttons[i][j]),
G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, ttt);
}
}
static void
tictactoe_toggle (GtkWidget *widget, Tictactoe *ttt)
{
int i,k;
static int rwins[8][3] = { { 0, 0, 0 }, { 1, 1, 1 }, { 2, 2, 2 },
{ 0, 1, 2 }, { 0, 1, 2 }, { 0, 1, 2 },
{ 0, 1, 2 }, { 0, 1, 2 } };
static int cwins[8][3] = { { 0, 1, 2 }, { 0, 1, 2 }, { 0, 1, 2 },
{ 0, 0, 0 }, { 1, 1, 1 }, { 2, 2, 2 },
{ 0, 1, 2 }, { 2, 1, 0 } };
int success, found;
for (k = 0; k<8; k++)
{
success = TRUE;
found = FALSE;
for (i = 0; i<3; i++)
{
success = success &&
GTK_TOGGLE_BUTTON (ttt->buttons[rwins[k][i]][cwins[k][i]])->active;
found = found ||
ttt->buttons[rwins[k][i]][cwins[k][i]] == widget;
}
if (success && found)
{
g_signal_emit (ttt,
tictactoe_signals[TICTACTOE_SIGNAL], 0);
break;
}
}
} </PRE
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><H2
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><A
NAME="AEN2912"
>ttt_test.c</A
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><PRE
CLASS="PROGRAMLISTING"
> #include <stdlib.h>
#include <gtk/gtk.h>
#include "tictactoe.h"
void win( GtkWidget *widget,
gpointer data )
{
g_print ("Yay!\n");
tictactoe_clear (TICTACTOE (widget));
}
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *ttt;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Aspect Frame");
g_signal_connect (window, "destroy",
G_CALLBACK (exit), NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
ttt = tictactoe_new ();
gtk_container_add (GTK_CONTAINER (window), ttt);
gtk_widget_show (ttt);
/* And attach to its "tictactoe" signal */
g_signal_connect (ttt, "tictactoe",
G_CALLBACK (win), NULL);
gtk_widget_show (window);
gtk_main ();
return 0;
} </PRE
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