104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2013, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Jon Trulson, Xi Graphics 4/11/2001
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*
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* $XiGId: DtXinerama.c,v 1.1 2001/04/12 03:01:14 jon Exp $
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*
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* A Xinerama wrapper for CDE
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*
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <X11/Xlib.h>
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#include <Dt/DtXinerama.h>
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/* return a DtXineramaInfo_t (or NULL if no Xinerama) available */
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DtXineramaInfo_t *_DtXineramaInit(Display *dpy)
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{
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DtXineramaInfo_t *tmpDtXI = NULL;
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XineramaScreenInfo *XinerScrnInfo = NULL;
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int number = 0;
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if (!dpy)
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return(NULL);
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XinerScrnInfo = XineramaQueryScreens(dpy, &number);
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if (number <= 0 || XinerScrnInfo == NULL) /* then we don't have it */
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return(NULL);
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/* allocate some space for it */
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if ((tmpDtXI = (DtXineramaInfo_t *)malloc(sizeof(DtXineramaInfo_t))) == NULL)
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{ /* malloc failure */
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#ifdef DEBUG
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fprintf(stderr, "_DtXineramaInit: malloc failed\n");
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#endif
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free(XinerScrnInfo);
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return(NULL);
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}
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tmpDtXI->numscreens = number;
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tmpDtXI->ScreenInfo = XinerScrnInfo;
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return(tmpDtXI);
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}
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/* Return w, h, xorg, and yorg for the specified screen. Return True */
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/* if a valid screen, False otherwise */
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Bool _DtXineramaGetScreen(DtXineramaInfo_t *DtXI, unsigned int screen,
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unsigned int *w, unsigned int *h,
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unsigned int *xorg, unsigned int *yorg)
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{
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if (DtXI == NULL)
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return(False);
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if (DtXI->numscreens == 0)
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return(False); /* no screens or no Xinerama */
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if (screen >= DtXI->numscreens)
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return(False); /* invalid screen */
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/* now get the info from the XinerInfo */
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/* struct and return it */
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if (w != NULL)
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*w = (DtXI->ScreenInfo[screen]).width;
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if (h != NULL)
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*h = (DtXI->ScreenInfo[screen]).height;
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if (xorg != NULL)
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*xorg = (DtXI->ScreenInfo[screen]).x_org;
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if (yorg != NULL)
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*yorg = (DtXI->ScreenInfo[screen]).y_org;
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return(True);
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}
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