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mutter-performance-source/clutter/eglx/clutter-event-egl.c
Matthew Allum 817cdbe2be 2007-07-06 Matthew Allum <mallum@openedhand.com> 
* clutter/eglx/Makefile.am:
        * clutter/eglx/clutter-egl.h:
        * clutter/eglx/clutter-event-egl.c:
        * clutter/eglx/clutter-stage-egl.c:
        Rename clutter-egl.h -> clutter-eglx.h

        * NEWS:
        * README:
        Add info re EGL split.
2007-07-06 14:08:03 +00:00

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/* Clutter.
* An OpenGL based 'interactive canvas' library.
* Authored By Matthew Allum <mallum@openedhand.com>
* Copyright (C) 2006-2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 "config.h"
#include "clutter-stage-egl.h"
#include "clutter-backend-egl.h"
#include "clutter-eglx.h"
#include "../clutter-backend.h"
#include "../clutter-event.h"
#include "../clutter-private.h"
#include "../clutter-debug.h"
#include "../clutter-main.h"
#include <string.h>
#include <glib.h>
#ifdef HAVE_XFIXES
#include <X11/extensions/Xfixes.h>
#endif
#include <X11/Xatom.h>
typedef struct _ClutterEventSource ClutterEventSource;
struct _ClutterEventSource
{
GSource source;
ClutterBackend *backend;
GPollFD event_poll_fd;
};
static gboolean clutter_event_prepare (GSource *source,
gint *timeout);
static gboolean clutter_event_check (GSource *source);
static gboolean clutter_event_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data);
static GList *event_sources = NULL;
static GSourceFuncs event_funcs = {
clutter_event_prepare,
clutter_event_check,
clutter_event_dispatch,
NULL
};
static GSource *
clutter_event_source_new (ClutterBackend *backend)
{
GSource *source = g_source_new (&event_funcs, sizeof (ClutterEventSource));
ClutterEventSource *event_source = (ClutterEventSource *) source;
event_source->backend = backend;
return source;
}
static gboolean
clutter_check_xpending (ClutterBackend *backend)
{
return XPending (CLUTTER_BACKEND_EGL (backend)->xdpy);
}
void
_clutter_events_init (ClutterBackend *backend)
{
GSource *source;
ClutterEventSource *event_source;
ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
int connection_number;
connection_number = ConnectionNumber (backend_egl->xdpy);
CLUTTER_NOTE (EVENT, "Connection number: %d", connection_number);
source = backend_egl->event_source = clutter_event_source_new (backend);
event_source = (ClutterEventSource *) source;
g_source_set_priority (source, CLUTTER_PRIORITY_EVENTS);
event_source->event_poll_fd.fd = connection_number;
event_source->event_poll_fd.events = G_IO_IN;
event_sources = g_list_prepend (event_sources, event_source);
g_source_add_poll (source, &event_source->event_poll_fd);
g_source_set_can_recurse (source, TRUE);
g_source_attach (source, NULL);
}
void
_clutter_events_uninit (ClutterBackend *backend)
{
ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
if (backend_egl->event_source)
{
CLUTTER_NOTE (EVENT, "Destroying the event source");
event_sources = g_list_remove (event_sources,
backend_egl->event_source);
g_source_destroy (backend_egl->event_source);
g_source_unref (backend_egl->event_source);
backend_egl->event_source = NULL;
}
}
static void
set_user_time (Display *display,
Window *xwindow,
ClutterEvent *event)
{
if (clutter_event_get_time (event) != CLUTTER_CURRENT_TIME)
{
Atom atom_WM_USER_TIME;
long timestamp = clutter_event_get_time (event);
atom_WM_USER_TIME = XInternAtom (display, "_NET_WM_USER_TIME", False);
XChangeProperty (display, *xwindow,
atom_WM_USER_TIME,
XA_CARDINAL, 32, PropModeReplace,
(unsigned char *) &timestamp, 1);
}
}
static void
translate_key_event (ClutterBackend *backend,
ClutterEvent *event,
XEvent *xevent)
{
CLUTTER_NOTE (EVENT, "Translating key %s event",
xevent->xany.type == KeyPress ? "press" : "release");
event->key.type = (xevent->xany.type == KeyPress) ? CLUTTER_KEY_PRESS
: CLUTTER_KEY_RELEASE;
event->key.time = xevent->xkey.time;
event->key.modifier_state = xevent->xkey.state; /* FIXME: handle modifiers */
event->key.hardware_keycode = xevent->xkey.keycode;
event->key.keyval = XKeycodeToKeysym (xevent->xkey.display,
xevent->xkey.keycode,
0); /* FIXME: index with modifiers */
}
static gboolean
clutter_event_translate (ClutterBackend *backend,
ClutterEvent *event,
XEvent *xevent)
{
ClutterBackendEGL *backend_egl;
ClutterStage *stage;
gboolean res;
Window xwindow, stage_xwindow;
backend_egl = CLUTTER_BACKEND_EGL (backend);
stage = CLUTTER_STAGE (_clutter_backend_get_stage (backend));
stage_xwindow = clutter_eglx_get_stage_window (stage);
xwindow = xevent->xany.window;
if (xwindow == None)
xwindow = stage_xwindow;
res = TRUE;
switch (xevent->type)
{
case Expose:
{
XEvent foo_xev;
/* Cheap compress */
while (XCheckTypedWindowEvent (backend_egl->xdpy,
xevent->xexpose.window,
Expose,
&foo_xev));
/* FIXME: need to make stage an 'actor' so can que
* a paint direct from there rather than hack here...
*/
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
res = FALSE;
}
break;
case KeyPress:
event->type = CLUTTER_KEY_PRESS;
translate_key_event (backend, event, xevent);
set_user_time (backend_egl->xdpy, &xwindow, event);
break;
case KeyRelease:
event->type = CLUTTER_KEY_RELEASE;
translate_key_event (backend, event, xevent);
break;
case ButtonPress:
switch (xevent->xbutton.button)
{
case 4: /* up */
case 5: /* down */
case 6: /* left */
case 7: /* right */
event->scroll.type = event->type = CLUTTER_SCROLL;
if (xevent->xbutton.button == 4)
event->scroll.direction = CLUTTER_SCROLL_UP;
else if (xevent->xbutton.button == 5)
event->scroll.direction = CLUTTER_SCROLL_DOWN;
else if (xevent->xbutton.button == 6)
event->scroll.direction = CLUTTER_SCROLL_LEFT;
else
event->scroll.direction = CLUTTER_SCROLL_RIGHT;
event->scroll.time = xevent->xbutton.time;
event->scroll.x = xevent->xbutton.x;
event->scroll.y = xevent->xbutton.y;
event->scroll.modifier_state = xevent->xbutton.state;
break;
default:
event->button.type = event->type = CLUTTER_BUTTON_PRESS;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x;
event->button.y = xevent->xbutton.y;
event->button.modifier_state = xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
_clutter_event_button_generate (backend, event);
break;
}
set_user_time (backend_egl->xdpy, &xwindow, event);
break;
case ButtonRelease:
/* scroll events don't have a corresponding release */
if (xevent->xbutton.button == 4 ||
xevent->xbutton.button == 5 ||
xevent->xbutton.button == 6 ||
xevent->xbutton.button == 7)
{
res = FALSE;
break;
}
event->button.type = event->type = CLUTTER_BUTTON_RELEASE;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x;
event->button.y = xevent->xbutton.y;
event->button.modifier_state = xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
break;
case MotionNotify:
event->motion.type = event->type = CLUTTER_MOTION;
event->motion.time = xevent->xmotion.time;
event->motion.x = xevent->xmotion.x;
event->motion.y = xevent->xmotion.y;
event->motion.modifier_state = xevent->xmotion.state;
break;
case DestroyNotify:
CLUTTER_NOTE (EVENT, "destroy notify:\twindow: %ld",
xevent->xdestroywindow.window);
event->type = event->any.type = CLUTTER_DESTROY_NOTIFY;
break;
default:
/* ignore every other event */
res = FALSE;
break;
}
return res;
}
static void
events_queue (ClutterBackend *backend)
{
ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
ClutterEvent *event;
XEvent xevent;
ClutterMainContext *clutter_context;
clutter_context = clutter_context_get_default ();
Display *xdisplay = backend_egl->xdpy;
while (!clutter_events_pending () && XPending (xdisplay))
{
XNextEvent (xdisplay, &xevent);
event = clutter_event_new (CLUTTER_NOTHING);
if (clutter_event_translate (backend, event, &xevent))
{
g_queue_push_head (clutter_context->events_queue, event);
}
else
{
clutter_event_free (event);
}
}
}
static gboolean
clutter_event_prepare (GSource *source,
gint *timeout)
{
ClutterBackend *backend = ((ClutterEventSource *) source)->backend;
gboolean retval;
*timeout = -1;
retval = (clutter_events_pending () || clutter_check_xpending (backend));
return retval;
}
static gboolean
clutter_event_check (GSource *source)
{
ClutterEventSource *event_source = (ClutterEventSource *) source;
ClutterBackend *backend = event_source->backend;
gboolean retval;
if (event_source->event_poll_fd.revents & G_IO_IN)
retval = (clutter_events_pending () || clutter_check_xpending (backend));
else
retval = FALSE;
return retval;
}
static gboolean
clutter_event_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
ClutterBackend *backend = ((ClutterEventSource *) source)->backend;
ClutterEvent *event;
events_queue (backend);
event = clutter_event_get ();
if (event)
{
clutter_do_event (event);
clutter_event_free (event);
}
return TRUE;
}
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