gtk/gdk/linux-fb/gdkevents-fb.c
2000-06-20 20:20:38 +00:00

252 lines
5.3 KiB
C

/* GDK - The GIMP Drawing Kit
* 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.
*/
/*
* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "gdk.h"
#include "gdkprivate-fb.h"
#include "gdkinternals.h"
#include "gdkfb.h"
#include "gdkkeysyms.h"
#if HAVE_CONFIG_H
# include <config.h>
# if STDC_HEADERS
# include <string.h>
# endif
#endif
typedef struct _GdkIOClosure GdkIOClosure;
typedef struct _GdkEventPrivate GdkEventPrivate;
#define DOUBLE_CLICK_TIME 250
#define TRIPLE_CLICK_TIME 500
#define DOUBLE_CLICK_DIST 5
#define TRIPLE_CLICK_DIST 5
typedef enum
{
/* Following flag is set for events on the event queue during
* translation and cleared afterwards.
*/
GDK_EVENT_PENDING = 1 << 0
} GdkEventFlags;
struct _GdkIOClosure
{
GdkInputFunction function;
GdkInputCondition condition;
GdkDestroyNotify notify;
gpointer data;
};
struct _GdkEventPrivate
{
GdkEvent event;
guint flags;
};
/*
* Private function declarations
*/
/* Private variable declarations
*/
#if 0
static GList *client_filters; /* Filters for client messages */
static GSourceFuncs event_funcs = {
gdk_event_prepare,
gdk_event_check,
gdk_event_dispatch,
(GDestroyNotify)g_free
};
#endif
/*********************************************
* Functions for maintaining the event queue *
*********************************************/
static gboolean fb_events_prepare(gpointer source_data,
GTimeVal *current_time,
gint *timeout,
gpointer user_data);
static gboolean fb_events_check(gpointer source_data,
GTimeVal *current_time,
gpointer user_data);
static gboolean fb_events_dispatch(gpointer source_data,
GTimeVal *dispatch_time,
gpointer user_data);
void
gdk_events_init (void)
{
static GSourceFuncs fb_events_funcs = {
fb_events_prepare,
fb_events_check,
fb_events_dispatch,
NULL
};
g_source_add(G_PRIORITY_HIGH_IDLE, TRUE, &fb_events_funcs, NULL, NULL, NULL);
}
/*
*--------------------------------------------------------------
* gdk_events_pending
*
* Returns if events are pending on the queue.
*
* Arguments:
*
* Results:
* Returns TRUE if events are pending
*
* Side effects:
*
*--------------------------------------------------------------
*/
gboolean
gdk_events_pending (void)
{
return gdk_event_queue_find_first()?TRUE:FALSE;
}
GdkEvent*
gdk_event_get_graphics_expose (GdkWindow *window)
{
GList *ltmp;
g_return_val_if_fail (window != NULL, NULL);
for(ltmp = gdk_queued_events; ltmp; ltmp = ltmp->next)
{
GdkEvent *event = ltmp->data;
if(event->type == GDK_EXPOSE
&& event->expose.window == window)
break;
}
if(ltmp)
{
GdkEvent *retval = ltmp->data;
gdk_event_queue_remove_link(ltmp);
g_list_free_1(ltmp);
return retval;
}
return NULL;
}
void
gdk_events_queue (void)
{
}
static gboolean
fb_events_prepare(gpointer source_data,
GTimeVal *current_time,
gint *timeout,
gpointer user_data)
{
*timeout = -1;
return fb_events_check(source_data, current_time, user_data);
}
static gboolean
fb_events_check(gpointer source_data,
GTimeVal *current_time,
gpointer user_data)
{
gboolean retval;
GDK_THREADS_ENTER();
retval = (gdk_event_queue_find_first () != NULL);
GDK_THREADS_LEAVE();
return retval;
}
static gboolean
fb_events_dispatch(gpointer source_data, GTimeVal *dispatch_time, gpointer user_data)
{
GdkEvent *event;
GDK_THREADS_ENTER();
while((event = gdk_event_unqueue()))
{
if(event->type == GDK_EXPOSE
&& event->expose.window == gdk_parent_root)
gdk_fb_drawable_clear(event->expose.window);
else if(gdk_event_func)
(*gdk_event_func)(event, gdk_event_data);
gdk_event_free(event);
}
GDK_THREADS_LEAVE();
return TRUE;
}
/*
*--------------------------------------------------------------
* gdk_flush
*
* Flushes the Xlib output buffer and then waits
* until all requests have been received and processed
* by the X server. The only real use for this function
* is in dealing with XShm.
*
* Arguments:
*
* Results:
*
* Side effects:
*
*--------------------------------------------------------------
*/
void
gdk_flush (void)
{
}
gboolean
gdk_event_send_client_message (GdkEvent *event, guint32 xid)
{
return FALSE;
}
void gdk_event_send_clientmessage_toall (GdkEvent *sev)
{
}