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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010,2011 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.h>
#include <cogl-internal.h>
#include <cogl-handle.h>
#include <cogl-context-private.h>
#include <cogl-framebuffer-private.h>
#include <cogl-display-private.h>
#include <cogl-renderer-private.h>
#include <cogl-renderer-xlib-private.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xdamage.h>
#include "cogl-xlib.h"
/* FIXME: when we remove the last X11 based Clutter backend then we
* will get rid of these functions and instead rely on the equivalent
* _cogl_renderer_xlib API
*/
/* This can't be in the Cogl context because it can be set before
context is created */
static Display *_cogl_xlib_display = NULL;
Display *
cogl_xlib_get_display (void)
{
_COGL_GET_CONTEXT (ctx, NULL);
if (!ctx->stub_winsys)
return cogl_renderer_xlib_get_display (ctx->display->renderer);
/* _cogl_xlib_set_display should be called before this function */
g_assert (_cogl_xlib_display != NULL);
return _cogl_xlib_display;
}
void
cogl_xlib_set_display (Display *display)
{
/* This can only be called once before the Cogl context is created */
g_assert (_cogl_xlib_display == NULL);
_cogl_xlib_display = display;
}
/* These three functions are wrappers around the equivalent renderer
functions. They can be removed once all xlib-based backends in
Clutter know about the renderer */
CoglFilterReturn
cogl_xlib_handle_event (XEvent *xevent)
{
_COGL_GET_CONTEXT (ctx, COGL_FILTER_CONTINUE);
/* Pass the event on to the renderer */
return cogl_renderer_handle_native_event (ctx->display->renderer, xevent);
}
void
_cogl_xlib_add_filter (CoglNativeFilterFunc func,
void *data)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl_renderer_add_native_filter (ctx->display->renderer, func, data);
}
void
_cogl_xlib_remove_filter (CoglNativeFilterFunc func,
void *data)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl_renderer_remove_native_filter (ctx->display->renderer, func, data);
}
static int
error_handler (Display *xdpy,
XErrorEvent *error)
{
_COGL_GET_CONTEXT (ctxt, 0);
g_assert (ctxt->trap_state);
ctxt->trap_state->trapped_error_code = error->error_code;
return 0;
}
void
_cogl_xlib_trap_errors (CoglXlibTrapState *state)
{
_COGL_GET_CONTEXT (ctxt, NO_RETVAL);
if (!ctxt->stub_winsys)
{
_cogl_renderer_xlib_trap_errors (ctxt->display->renderer, state);
return;
}
state->trapped_error_code = 0;
state->old_error_handler = XSetErrorHandler (error_handler);
state->old_state = ctxt->trap_state;
ctxt->trap_state = state;
}
int
_cogl_xlib_untrap_errors (CoglXlibTrapState *state)
{
_COGL_GET_CONTEXT (ctxt, 0);
if (!ctxt->stub_winsys)
{
return _cogl_renderer_xlib_untrap_errors (ctxt->display->renderer, state);
}
g_assert (state == ctxt->trap_state);
XSetErrorHandler (state->old_error_handler);
ctxt->trap_state = state->old_state;
return state->trapped_error_code;
}
void
_cogl_xlib_query_damage_extension (void)
{
int damage_error;
_COGL_GET_CONTEXT (ctxt, NO_RETVAL);
/* Check whether damage events are supported on this display */
if (!XDamageQueryExtension (cogl_xlib_get_display (),
&ctxt->damage_base,
&damage_error))
ctxt->damage_base = -1;
}
int
_cogl_xlib_get_damage_base (void)
{
_COGL_GET_CONTEXT (ctxt, -1);
if (!ctxt->stub_winsys)
{
CoglRendererX11 *x11_renderer = ctxt->display->renderer->winsys;
return x11_renderer->damage_base;
}
else
return ctxt->damage_base;
}
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