mutter/cogl/cogl-xlib-renderer.c
Robert Bragg 54735dec84 Switch use of primitive glib types to c99 equivalents
The coding style has for a long time said to avoid using redundant glib
data types such as gint or gchar etc because we feel that they make the
code look unnecessarily foreign to developers coming from outside of the
Gnome developer community.

Note: When we tried to find the historical rationale for the types we
just found that they were apparently only added for consistent syntax
highlighting which didn't seem that compelling.

Up until now we have been continuing to use some of the platform
specific type such as gint{8,16,32,64} and gsize but this patch switches
us over to using the standard c99 equivalents instead so we can further
ensure that our code looks familiar to the widest range of C developers
who might potentially contribute to Cogl.

So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this
switches all Cogl code to instead use the int{8,16,32,64}_t and
uint{8,16,32,64}_t c99 types instead.

Instead of gsize we now use size_t

For now we are not going to use the c99 _Bool type and instead we have
introduced a new CoglBool type to use instead of gboolean.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
2012-08-06 14:27:39 +01:00

315 lines
8.0 KiB
C

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009,2010 Intel Corporation.
*
* 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.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-xlib-renderer.h"
#include "cogl-util.h"
#include "cogl-internal.h"
#include "cogl-object.h"
#include "cogl-renderer-private.h"
#include "cogl-xlib-renderer-private.h"
#include "cogl-x11-renderer-private.h"
#include "cogl-winsys-private.h"
#include <X11/Xlib.h>
#include <X11/extensions/Xdamage.h>
#include <stdlib.h>
static char *_cogl_x11_display_name = NULL;
static GList *_cogl_xlib_renderers = NULL;
static void
destroy_xlib_renderer_data (void *user_data)
{
g_slice_free (CoglXlibRenderer, user_data);
}
CoglXlibRenderer *
_cogl_xlib_renderer_get_data (CoglRenderer *renderer)
{
static CoglUserDataKey key;
CoglXlibRenderer *data;
/* Constructs a CoglXlibRenderer struct on demand and attaches it to
the object using user data. It's done this way instead of using a
subclassing hierarchy in the winsys data because all EGL winsys's
need the EGL winsys data but only one of them wants the Xlib
data. */
data = cogl_object_get_user_data (COGL_OBJECT (renderer), &key);
if (data == NULL)
{
data = g_slice_new0 (CoglXlibRenderer);
cogl_object_set_user_data (COGL_OBJECT (renderer),
&key,
data,
destroy_xlib_renderer_data);
}
return data;
}
static void
register_xlib_renderer (CoglRenderer *renderer)
{
GList *l;
for (l = _cogl_xlib_renderers; l; l = l->next)
if (l->data == renderer)
return;
_cogl_xlib_renderers = g_list_prepend (_cogl_xlib_renderers, renderer);
}
static void
unregister_xlib_renderer (CoglRenderer *renderer)
{
_cogl_xlib_renderers = g_list_remove (_cogl_xlib_renderers, renderer);
}
static CoglRenderer *
get_renderer_for_xdisplay (Display *xdpy)
{
GList *l;
for (l = _cogl_xlib_renderers; l; l = l->next)
{
CoglRenderer *renderer = l->data;
CoglXlibRenderer *xlib_renderer =
_cogl_xlib_renderer_get_data (renderer);
if (xlib_renderer->xdpy == xdpy)
return renderer;
}
return NULL;
}
static int
error_handler (Display *xdpy,
XErrorEvent *error)
{
CoglRenderer *renderer;
CoglXlibRenderer *xlib_renderer;
renderer = get_renderer_for_xdisplay (xdpy);
xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
g_assert (xlib_renderer->trap_state);
xlib_renderer->trap_state->trapped_error_code = error->error_code;
return 0;
}
void
_cogl_xlib_renderer_trap_errors (CoglRenderer *renderer,
CoglXlibTrapState *state)
{
CoglXlibRenderer *xlib_renderer;
xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
state->trapped_error_code = 0;
state->old_error_handler = XSetErrorHandler (error_handler);
state->old_state = xlib_renderer->trap_state;
xlib_renderer->trap_state = state;
}
int
_cogl_xlib_renderer_untrap_errors (CoglRenderer *renderer,
CoglXlibTrapState *state)
{
CoglXlibRenderer *xlib_renderer;
xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
g_assert (state == xlib_renderer->trap_state);
XSetErrorHandler (state->old_error_handler);
xlib_renderer->trap_state = state->old_state;
return state->trapped_error_code;
}
static Display *
assert_xlib_display (CoglRenderer *renderer, GError **error)
{
Display *xdpy = cogl_xlib_renderer_get_foreign_display (renderer);
CoglXlibRenderer *xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
/* A foreign display may have already been set... */
if (xdpy)
{
xlib_renderer->xdpy = xdpy;
return xdpy;
}
xdpy = XOpenDisplay (_cogl_x11_display_name);
if (xdpy == NULL)
{
g_set_error (error,
COGL_RENDERER_ERROR,
COGL_RENDERER_ERROR_XLIB_DISPLAY_OPEN,
"Failed to open X Display %s", _cogl_x11_display_name);
return NULL;
}
xlib_renderer->xdpy = xdpy;
return xdpy;
}
CoglBool
_cogl_xlib_renderer_connect (CoglRenderer *renderer, GError **error)
{
CoglXlibRenderer *xlib_renderer =
_cogl_xlib_renderer_get_data (renderer);
CoglX11Renderer *x11_renderer =
(CoglX11Renderer *) xlib_renderer;
int damage_error;
if (!assert_xlib_display (renderer, error))
return FALSE;
if (getenv ("COGL_X11_SYNC"))
XSynchronize (xlib_renderer->xdpy, TRUE);
/* Check whether damage events are supported on this display */
if (!XDamageQueryExtension (xlib_renderer->xdpy,
&x11_renderer->damage_base,
&damage_error))
x11_renderer->damage_base = -1;
xlib_renderer->trap_state = NULL;
xlib_renderer->poll_fd.fd = ConnectionNumber (xlib_renderer->xdpy);
xlib_renderer->poll_fd.events = COGL_POLL_FD_EVENT_IN;
register_xlib_renderer (renderer);
return TRUE;
}
void
_cogl_xlib_renderer_disconnect (CoglRenderer *renderer)
{
CoglXlibRenderer *xlib_renderer =
_cogl_xlib_renderer_get_data (renderer);
if (!renderer->foreign_xdpy && xlib_renderer->xdpy)
XCloseDisplay (xlib_renderer->xdpy);
unregister_xlib_renderer (renderer);
}
Display *
cogl_xlib_renderer_get_display (CoglRenderer *renderer)
{
CoglXlibRenderer *xlib_renderer;
_COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), NULL);
xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
return xlib_renderer->xdpy;
}
CoglFilterReturn
cogl_xlib_renderer_handle_event (CoglRenderer *renderer,
XEvent *event)
{
return _cogl_renderer_handle_native_event (renderer, event);
}
void
cogl_xlib_renderer_add_filter (CoglRenderer *renderer,
CoglXlibFilterFunc func,
void *data)
{
_cogl_renderer_add_native_filter (renderer,
(CoglNativeFilterFunc)func, data);
}
void
cogl_xlib_renderer_remove_filter (CoglRenderer *renderer,
CoglXlibFilterFunc func,
void *data)
{
_cogl_renderer_remove_native_filter (renderer,
(CoglNativeFilterFunc)func, data);
}
void
_cogl_xlib_renderer_poll_get_info (CoglRenderer *renderer,
CoglPollFD **poll_fds,
int *n_poll_fds,
int64_t *timeout)
{
CoglXlibRenderer *xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
if (renderer->xlib_enable_event_retrieval)
{
*n_poll_fds = 1;
*poll_fds = &xlib_renderer->poll_fd;
if (XPending (xlib_renderer->xdpy))
*timeout = 0;
else
*timeout = -1;
}
else
{
*n_poll_fds = 0;
*poll_fds = NULL;
*timeout = -1;
}
}
void
_cogl_xlib_renderer_poll_dispatch (CoglRenderer *renderer,
const CoglPollFD *poll_fds,
int n_poll_fds)
{
CoglXlibRenderer *xlib_renderer = _cogl_xlib_renderer_get_data (renderer);
if (renderer->xlib_enable_event_retrieval)
while (XPending (xlib_renderer->xdpy))
{
XEvent xevent;
XNextEvent (xlib_renderer->xdpy, &xevent);
cogl_xlib_renderer_handle_event (renderer, &xevent);
}
}