static gboolean
button_press(GtkWidget *widget,
GdkEventButton *event)
{
mesh_info *info = (mesh_info*)g_object_get_data(G_OBJECT(widget), "mesh_info");
if (info->animate)
{
if (event->button == 1)
toggle_animation (widget);
}
else
{
info->dquat[0] = 0.0;
info->dquat[1] = 0.0;
info->dquat[2] = 0.0;
info->dquat[3] = 1.0;
}
/* beginning of drag, reset mouse position */
info->beginx = event->x;
info->beginy = event->y;
return FALSE;
}
/***
*** The "key_press_event" signal handler. Any processing required when key
*** presses occur should be done here.
***/
static gboolean
key_press_event (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
g_print ("%s: \"key_press_event\": ", gtk_widget_get_name (widget));
switch (event->keyval)
{
/*** Fill in the details here. ***/
case GDK_KEY_a:
g_print ("a key\n");
toggle_animation (widget);
break;
case GDK_KEY_Escape:
g_print ("Escape key\n");
gtk_main_quit ();
break;
default:
g_print("\n");
return FALSE;
}
return TRUE;
}
/***
*** The "button_press_event" signal handler. Any processing required when
*** mouse buttons (only left and middle buttons) are pressed on the OpenGL-
*** capable drawing area should be done here.
***/
static gboolean
button_press_event (GtkWidget *widget,
GdkEventButton *event,
gpointer data)
{
/* Starts/Stops animation according mouse button clicks.*/
if (event->button == 1)
{
toggle_animation (widget);
return TRUE;
}
return FALSE;
}
/***
*** The "key_press_event" signal handler. Any processing required when key
*** presses occur should be done here.
***/
static gboolean
key_press_event (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
GtkAllocation allocation;
GdkWindow *window;
window = gtk_widget_get_window (widget);
gtk_widget_get_allocation (widget, &allocation);
switch (event->keyval)
{
case GDK_KEY_Left:
/* Rotate left. */
if (!animate)
{
spin += 2.0;
if (spin > 360.0) spin -= 360.0;
gdk_window_invalidate_rect (window, &allocation, FALSE);
}
break;
case GDK_KEY_Right:
/* Rotate right. */
if (!animate)
{
spin -= 2.0;
if (spin < 360.0) spin += 360.0;
gdk_window_invalidate_rect (window, &allocation, FALSE);
}
break;
case GDK_KEY_a:
/* Toggle animation. */
toggle_animation (widget);
break;
case GDK_KEY_Escape:
/* Quit. */
gtk_main_quit ();
break;
default:
return FALSE;
}
return TRUE;
}
static gboolean
key_press_event (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
GtkAllocation allocation;
switch (event->keyval)
{
case GDK_KEY_r:
init_wireframe (widget);
break;
case GDK_KEY_a:
toggle_animation (widget);
break;
case GDK_KEY_w:
if (!animate)
timeout (widget);
break;
case GDK_KEY_plus:
sdepth -= 2.0;
break;
case GDK_KEY_minus:
sdepth += 2.0;
break;
case GDK_KEY_Escape:
gtk_main_quit ();
break;
default:
return FALSE;
}
if (!animate)
{
gtk_widget_get_allocation (widget, &allocation);
gdk_window_invalidate_rect (gtk_widget_get_window (widget), &allocation, FALSE);
}
return TRUE;
}
static gboolean
button_release(GtkWidget *widget,
GdkEventButton *event)
{
mesh_info *info = (mesh_info*)g_object_get_data(G_OBJECT(widget), "mesh_info");
if (!info->animate)
{
if (event->button == 1 &&
((info->dx*info->dx + info->dy*info->dy) > ANIMATE_THRESHOLD))
toggle_animation (widget);
}
info->dx = 0.0;
info->dy = 0.0;
return FALSE;
}
static gboolean
key_press_event (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
switch (event->keyval)
{
case GDK_a:
toggle_animation (widget);
break;
case GDK_i:
init_logo_view (widget);
break;
case GDK_Escape:
gtk_main_quit ();
break;
default:
return TRUE;
}
return TRUE;
}