xorg-server-1.4/hw/xnest/Display.c

   1 /*
   2
   3 Copyright 1993 by Davor Matic
   4
   5 Permission to use, copy, modify, distribute, and sell this software
   6 and its documentation for any purpose is hereby granted without fee,
   7 provided that the above copyright notice appear in all copies and that
   8 both that copyright notice and this permission notice appear in
   9 supporting documentation.  Davor Matic makes no representations about
  10 the suitability of this software for any purpose.  It is provided "as
  11 is" without express or implied warranty.
  12
  13 */
  14
  15
  16 #ifdef HAVE_XNEST_CONFIG_H
  17 #include <xnest-config.h>
  18 #endif
  19
  20 #include <X11/X.h>
  21 #include <X11/Xproto.h>
  22 #include "screenint.h"
  23 #include "input.h"
  24 #include "misc.h"
  25 #include "scrnintstr.h"
  26 #include "servermd.h"
  27
  28 #include "Xnest.h"
  29
  30 #include "Display.h"
  31 #include "Init.h"
  32 #include "Args.h"
  33
  34 #include "icon"
  35 #include "screensaver"
  36
  37 Display *xnestDisplay = NULL;
  38 XVisualInfo *xnestVisuals;
  39 int xnestNumVisuals;
  40 int xnestDefaultVisualIndex;
  41 Colormap *xnestDefaultColormaps;
  42 static int xnestNumDefaultColormaps;
  43 int *xnestDepths;
  44 int xnestNumDepths;
  45 XPixmapFormatValues *xnestPixmapFormats;
  46 int xnestNumPixmapFormats;
  47 Pixel xnestBlackPixel;
  48 Pixel xnestWhitePixel;
  49 Drawable xnestDefaultDrawables[MAXDEPTH + 1];
  50 Pixmap xnestIconBitmap;
  51 Pixmap xnestScreenSaverPixmap;
  52 XlibGC xnestBitmapGC;
  53 unsigned long xnestEventMask;
  54
  55 void
  56 xnestOpenDisplay(int argc, char *argv[])
  57 {
  58   XVisualInfo vi;
  59   long mask;
  60   int i, j;
  61
  62   if (!xnestDoFullGeneration) return;
  63
  64   xnestCloseDisplay();
  65
  66   xnestDisplay = XOpenDisplay(xnestDisplayName);
  67   if (xnestDisplay == NULL)
  68     FatalError("Unable to open display \"%s\".\n",
  69                XDisplayName(xnestDisplayName));
  70
  71   if (xnestSynchronize)
  72     XSynchronize(xnestDisplay, True);
  73
  74   mask = VisualScreenMask;
  75   vi.screen = DefaultScreen(xnestDisplay);
  76   xnestVisuals = XGetVisualInfo(xnestDisplay, mask, &vi, &xnestNumVisuals);
  77   if (xnestNumVisuals == 0 || xnestVisuals == NULL)
  78     FatalError("Unable to find any visuals.\n");
  79
  80   if (xnestUserDefaultClass || xnestUserDefaultDepth) {
  81     xnestDefaultVisualIndex = UNDEFINED;
  82     for (i = 0; i < xnestNumVisuals; i++)
  83       if ((!xnestUserDefaultClass ||
  84            xnestVisuals[i].class == xnestDefaultClass)
  85           &&
  86           (!xnestUserDefaultDepth ||
  87            xnestVisuals[i].depth == xnestDefaultDepth)) {
  88         xnestDefaultVisualIndex = i;
  89         break;
  90       }
  91     if (xnestDefaultVisualIndex == UNDEFINED)
  92       FatalError("Unable to find desired default visual.\n");
  93   }
  94   else {
  95     vi.visualid = XVisualIDFromVisual(DefaultVisual(xnestDisplay,
  96                                       DefaultScreen(xnestDisplay)));
  97     xnestDefaultVisualIndex = 0;
  98     for (i = 0; i < xnestNumVisuals; i++)
  99       if (vi.visualid == xnestVisuals[i].visualid)
 100         xnestDefaultVisualIndex = i;
 101   }
 102
 103   xnestNumDefaultColormaps = xnestNumVisuals;
 104   xnestDefaultColormaps = (Colormap *)xalloc(xnestNumDefaultColormaps *
 105                                              sizeof(Colormap));
 106   for (i = 0; i < xnestNumDefaultColormaps; i++)
 107     xnestDefaultColormaps[i] = XCreateColormap(xnestDisplay,
 108                                                DefaultRootWindow(xnestDisplay),
 109                                                xnestVisuals[i].visual,
 110                                                AllocNone);
 111
 112   xnestDepths = XListDepths(xnestDisplay, DefaultScreen(xnestDisplay),
 113                             &xnestNumDepths);
 114
 115   xnestPixmapFormats = XListPixmapFormats(xnestDisplay,
 116                                           &xnestNumPixmapFormats);
 117
 118   xnestBlackPixel = BlackPixel(xnestDisplay, DefaultScreen(xnestDisplay));
 119   xnestWhitePixel = WhitePixel(xnestDisplay, DefaultScreen(xnestDisplay));
 120
 121   if (xnestParentWindow != (Window) 0)
 122     xnestEventMask = StructureNotifyMask;
 123   else
 124     xnestEventMask = 0L;
 125
 126   for (i = 0; i <= MAXDEPTH; i++)
 127     xnestDefaultDrawables[i] = None;
 128
 129   for (i = 0; i < xnestNumPixmapFormats; i++)
 130     for (j = 0; j < xnestNumDepths; j++)
 131       if (xnestPixmapFormats[i].depth == 1 ||
 132           xnestPixmapFormats[i].depth == xnestDepths[j]) {
 133         xnestDefaultDrawables[xnestPixmapFormats[i].depth] =
 134           XCreatePixmap(xnestDisplay, DefaultRootWindow(xnestDisplay),
 135                         1, 1, xnestPixmapFormats[i].depth);
 136       }
 137
 138   xnestBitmapGC = XCreateGC(xnestDisplay, xnestDefaultDrawables[1], 0L, NULL);
 139
 140   if (!(xnestUserGeometry & XValue))
 141     xnestX = 0;
 142
 143   if (!(xnestUserGeometry & YValue))
 144     xnestY = 0;
 145
 146   if (xnestParentWindow == 0) {
 147     if (!(xnestUserGeometry & WidthValue))
 148       xnestWidth = 3 * DisplayWidth(xnestDisplay,
 149                                     DefaultScreen(xnestDisplay)) / 4;
 150
 151     if (!(xnestUserGeometry & HeightValue))
 152       xnestHeight = 3 * DisplayHeight(xnestDisplay,
 153                                       DefaultScreen(xnestDisplay)) / 4;
 154   }
 155
 156   if (!xnestUserBorderWidth)
 157     xnestBorderWidth = 1;
 158
 159   xnestIconBitmap =
 160     XCreateBitmapFromData(xnestDisplay,
 161                           DefaultRootWindow(xnestDisplay),
 162                           (char *)icon_bits,
 163                           icon_width,
 164                           icon_height);
 165
 166   xnestScreenSaverPixmap =
 167     XCreatePixmapFromBitmapData(xnestDisplay,
 168                                 DefaultRootWindow(xnestDisplay),
 169                                 (char *)screensaver_bits,
 170                                 screensaver_width,
 171                                 screensaver_height,
 172                                 xnestWhitePixel,
 173                                 xnestBlackPixel,
 174                                 DefaultDepth(xnestDisplay,
 175                                              DefaultScreen(xnestDisplay)));
 176 }
 177
 178 void
 179 xnestCloseDisplay(void)
 180 {
 181   if (!xnestDoFullGeneration || !xnestDisplay) return;
 182
 183   /*
 184     If xnestDoFullGeneration all x resources will be destroyed upon closing
 185     the display connection.  There is no need to generate extra protocol.
 186     */
 187
 188   xfree(xnestDefaultColormaps);
 189   XFree(xnestVisuals);
 190   XFree(xnestDepths);
 191   XFree(xnestPixmapFormats);
 192   XCloseDisplay(xnestDisplay);
 193 }