gint
ghid_port_window_motion_cb (GtkWidget * widget,
GdkEventButton * ev, GHidPort * out)
{
gdouble dx, dy;
static gint x_prev = -1, y_prev = -1;
gboolean moved;
if (out->panning)
{
if (gtk_events_pending ())
return FALSE;
dx = gport->zoom * (x_prev - ev->x);
dy = gport->zoom * (y_prev - ev->y);
if (x_prev > 0)
ghid_port_ranges_pan (dx, dy, TRUE);
x_prev = ev->x;
y_prev = ev->y;
return FALSE;
}
x_prev = y_prev = -1;
moved = ghid_note_event_location (ev);
#if ENABLE_TOOLTIPS
queue_tooltip_update (out);
#endif
ghid_show_crosshair (TRUE);
if (moved && have_crosshair_attachments ())
ghid_draw_area_update (gport, NULL);
return FALSE;
}
void
ghid_notify_mark_change (bool changes_complete)
{
render_priv *priv = gport->render_priv;
/* We sometimes get called before the GUI is up */
if (gport->drawing_area == NULL)
return;
if (changes_complete)
priv->mark_invalidate_depth --;
if (priv->mark_invalidate_depth < 0)
{
priv->mark_invalidate_depth = 0;
/* A mismatch of changes_complete == false and == true notifications
* is not expected to occur, but we will try to handle it gracefully.
* As we know the mark will have been shown already, we must
* repaint the entire view to be sure not to leave an artaefact.
*/
ghid_invalidate_all ();
return;
}
if (priv->mark_invalidate_depth == 0)
DrawMark ();
if (!changes_complete)
{
priv->mark_invalidate_depth ++;
}
else if (gport->drawing_area != NULL)
{
/* Queue a GTK expose when changes are complete */
ghid_draw_area_update (gport, NULL);
}
}