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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
*/
/* This file contains a helper routine to be called by Java code to
determine whether the Xinerama extension is in use and therefore to
treat the multiple AWT screens as one large screen. */
#include <inttypes.h>
#include <X11/Xlib.h>
#ifdef __sun
typedef Status XineramaGetInfoFunc(Display* display, int screen_number,
XRectangle* framebuffer_rects, unsigned char* framebuffer_hints,
int* num_framebuffers);
typedef Status XineramaGetCenterHintFunc(Display* display, int screen_number,
int* x, int* y);
XineramaGetCenterHintFunc* XineramaSolarisCenterFunc = NULL;
#elif defined(__linux__)
#include "Xinerama.h"
#endif
Bool XineramaEnabled(Display* display) {
#ifdef __sun
char* XinExtName = "XINERAMA";
int32_t major_opcode, first_event, first_error;
Bool gotXinExt = False;
void* libHandle = 0;
unsigned char fbhints[MAXFRAMEBUFFERS];
int locNumScr = 0;
Bool usingXinerama = False;
char* XineramaLibName= "libXext.so";
char* XineramaGetInfoName = "XineramaGetInfo";
char* XineramaGetCenterHintName = "XineramaGetCenterHint";
XineramaGetInfoFunc* XineramaSolarisFunc = NULL;
gotXinExt = XQueryExtension(awt_display, XinExtName, &major_opcode,
&first_event, &first_error);
if (gotXinExt) {
/* load library, load and run XineramaGetInfo */
libHandle = dlopen(XineramaLibName, RTLD_LAZY | RTLD_GLOBAL);
if (libHandle != 0) {
XineramaSolarisFunc = (XineramaGetInfoFunc*)dlsym(libHandle, XineramaGetInfoName);
XineramaSolarisCenterFunc =
(XineramaGetCenterHintFunc*)dlsym(libHandle,
XineramaGetCenterHintName);
if (XineramaSolarisFunc != NULL) {
if ((*XineramaSolarisFunc)(awt_display, 0, &fbrects[0],
&fbhints[0], &locNumScr) != 0) {
usingXinerama = True;
/* set global number of screens */
awt_numScreens = locNumScr;
}
}
dlclose(libHandle);
}
}
return usingXinerama;
#elif defined(__linux__)
char* XinExtName = "XINERAMA";
int32_t major_opcode, first_event, first_error;
Bool gotXinExt = False;
int32_t locNumScr = 0;
XineramaScreenInfo *xinInfo;
gotXinExt = XQueryExtension(display, XinExtName, &major_opcode,
&first_event, &first_error);
if (gotXinExt) {
printf("Have Xinerama extension\n");
xinInfo = XineramaQueryScreens(display, &locNumScr);
if (xinInfo != NULL) {
printf("Xinerama extension active\n");
return True;
}
}
printf("Xinerama extension not present or inactive\n");
return False;
#else
return False;
#endif
}
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