IABSD.fr/xenocara/xserver/hw/xnest/Display.c

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  Commit

• Author : matthieu
  Date : 2021-11-11 09:03:02
  Hash : e086cf5a
  Message : Update to xserver 21.1.0

• xserver/hw/xnest/Display.c

• /*
  
  Copyright 1993 by Davor Matic
  
  Permission to use, copy, modify, distribute, and sell this software
  and its documentation for any purpose is hereby granted without fee,
  provided that the above copyright notice appear in all copies and that
  both that copyright notice and this permission notice appear in
  supporting documentation.  Davor Matic makes no representations about
  the suitability of this software for any purpose.  It is provided "as
  is" without express or implied warranty.
  
  */
  
  #ifdef HAVE_XNEST_CONFIG_H
  #include <xnest-config.h>
  #endif
  
  #include <string.h>
  #include <errno.h>
  
  #include <X11/X.h>
  #include <X11/Xproto.h>
  #include "screenint.h"
  #include "input.h"
  #include "misc.h"
  #include "scrnintstr.h"
  #include "servermd.h"
  
  #include "Xnest.h"
  
  #include "Display.h"
  #include "Init.h"
  #include "Args.h"
  
  #include "icon"
  #include "screensaver"
  
  Display *xnestDisplay = NULL;
  XVisualInfo *xnestVisuals;
  int xnestNumVisuals;
  int xnestDefaultVisualIndex;
  Colormap *xnestDefaultColormaps;
  static unsigned int xnestNumDefaultColormaps;
  int *xnestDepths;
  int xnestNumDepths;
  XPixmapFormatValues *xnestPixmapFormats;
  int xnestNumPixmapFormats;
  Pixel xnestBlackPixel;
  Pixel xnestWhitePixel;
  Drawable xnestDefaultDrawables[MAXDEPTH + 1];
  Pixmap xnestIconBitmap;
  Pixmap xnestScreenSaverPixmap;
  XlibGC xnestBitmapGC;
  unsigned long xnestEventMask;
  
  #ifdef __SUNPRO_C
  /* prevent "Function has no return statement" error for x_io_error_handler */
  #pragma does_not_return(exit)
  #endif
  
  static int _X_NORETURN
  x_io_error_handler(Display * dpy)
  {
      ErrorF("Lost connection to X server: %s\n", strerror(errno));
      CloseWellKnownConnections();
      OsCleanup(1);
      exit(1);
  }
  
  void
  xnestOpenDisplay(int argc, char *argv[])
  {
      XVisualInfo vi;
      long mask;
      int i, j;
  
      if (!xnestDoFullGeneration)
          return;
  
      XSetIOErrorHandler(x_io_error_handler);
  
      xnestCloseDisplay();
  
      xnestDisplay = XOpenDisplay(xnestDisplayName);
      if (xnestDisplay == NULL)
          FatalError("Unable to open display \"%s\".\n",
                     XDisplayName(xnestDisplayName));
  
      if (xnestSynchronize)
          XSynchronize(xnestDisplay, True);
  
      mask = VisualScreenMask;
      vi.screen = DefaultScreen(xnestDisplay);
      xnestVisuals = XGetVisualInfo(xnestDisplay, mask, &vi, &xnestNumVisuals);
      if (xnestNumVisuals == 0 || xnestVisuals == NULL)
          FatalError("Unable to find any visuals.\n");
  
      if (xnestUserDefaultClass || xnestUserDefaultDepth) {
          xnestDefaultVisualIndex = UNDEFINED;
          for (i = 0; i < xnestNumVisuals; i++)
              if ((!xnestUserDefaultClass ||
                   xnestVisuals[i].class == xnestDefaultClass)
                  &&
                  (!xnestUserDefaultDepth ||
                   xnestVisuals[i].depth == xnestDefaultDepth)) {
                  xnestDefaultVisualIndex = i;
                  break;
              }
          if (xnestDefaultVisualIndex == UNDEFINED)
              FatalError("Unable to find desired default visual.\n");
      }
      else {
          vi.visualid = XVisualIDFromVisual(DefaultVisual(xnestDisplay,
                                                          DefaultScreen
                                                          (xnestDisplay)));
          xnestDefaultVisualIndex = 0;
          for (i = 0; i < xnestNumVisuals; i++)
              if (vi.visualid == xnestVisuals[i].visualid)
                  xnestDefaultVisualIndex = i;
      }
  
      xnestNumDefaultColormaps = xnestNumVisuals;
      xnestDefaultColormaps = xallocarray(xnestNumDefaultColormaps,
                                          sizeof(Colormap));
      for (i = 0; i < xnestNumDefaultColormaps; i++)
          xnestDefaultColormaps[i] = XCreateColormap(xnestDisplay,
                                                     DefaultRootWindow
                                                     (xnestDisplay),
                                                     xnestVisuals[i].visual,
                                                     AllocNone);
  
      xnestDepths = XListDepths(xnestDisplay, DefaultScreen(xnestDisplay),
                                &xnestNumDepths);
  
      xnestPixmapFormats = XListPixmapFormats(xnestDisplay,
                                              &xnestNumPixmapFormats);
  
      xnestBlackPixel = BlackPixel(xnestDisplay, DefaultScreen(xnestDisplay));
      xnestWhitePixel = WhitePixel(xnestDisplay, DefaultScreen(xnestDisplay));
  
      if (xnestParentWindow != (Window) 0)
          xnestEventMask = StructureNotifyMask;
      else
          xnestEventMask = 0L;
  
      for (i = 0; i <= MAXDEPTH; i++)
          xnestDefaultDrawables[i] = None;
  
      for (i = 0; i < xnestNumPixmapFormats; i++)
          for (j = 0; j < xnestNumDepths; j++)
              if (xnestPixmapFormats[i].depth == 1 ||
                  xnestPixmapFormats[i].depth == xnestDepths[j]) {
                  xnestDefaultDrawables[xnestPixmapFormats[i].depth] =
                      XCreatePixmap(xnestDisplay, DefaultRootWindow(xnestDisplay),
                                    1, 1, xnestPixmapFormats[i].depth);
              }
  
      xnestBitmapGC = XCreateGC(xnestDisplay, xnestDefaultDrawables[1], 0L, NULL);
  
      if (!(xnestUserGeometry & XValue))
          xnestX = 0;
  
      if (!(xnestUserGeometry & YValue))
          xnestY = 0;
  
      if (xnestParentWindow == 0) {
          if (!(xnestUserGeometry & WidthValue))
              xnestWidth = 3 * DisplayWidth(xnestDisplay,
                                            DefaultScreen(xnestDisplay)) / 4;
  
          if (!(xnestUserGeometry & HeightValue))
              xnestHeight = 3 * DisplayHeight(xnestDisplay,
                                              DefaultScreen(xnestDisplay)) / 4;
      }
  
      if (!xnestUserBorderWidth)
          xnestBorderWidth = 1;
  
      xnestIconBitmap =
          XCreateBitmapFromData(xnestDisplay,
                                DefaultRootWindow(xnestDisplay),
                                (char *) icon_bits, icon_width, icon_height);
  
      xnestScreenSaverPixmap =
          XCreatePixmapFromBitmapData(xnestDisplay,
                                      DefaultRootWindow(xnestDisplay),
                                      (char *) screensaver_bits,
                                      screensaver_width,
                                      screensaver_height,
                                      xnestWhitePixel,
                                      xnestBlackPixel,
                                      DefaultDepth(xnestDisplay,
                                                   DefaultScreen(xnestDisplay)));
  }
  
  void
  xnestCloseDisplay(void)
  {
      if (!xnestDoFullGeneration || !xnestDisplay)
          return;
  
      /*
         If xnestDoFullGeneration all x resources will be destroyed upon closing
         the display connection.  There is no need to generate extra protocol.
       */
  
      free(xnestDefaultColormaps);
      XFree(xnestVisuals);
      XFree(xnestDepths);
      XFree(xnestPixmapFormats);
      XCloseDisplay(xnestDisplay);
  }