xorg-server-1.4/hw/xwin/winvalargs.c

   1 /*
   2  *Copyright (C) 2003-2004 Harold L Hunt II All Rights Reserved.
   3  *
   4  *Permission is hereby granted, free of charge, to any person obtaining
   5  * a copy of this software and associated documentation files (the
   6  *"Software"), to deal in the Software without restriction, including
   7  *without limitation the rights to use, copy, modify, merge, publish,
   8  *distribute, sublicense, and/or sell copies of the Software, and to
   9  *permit persons to whom the Software is furnished to do so, subject to
  10  *the following conditions:
  11  *
  12  *The above copyright notice and this permission notice shall be
  13  *included in all copies or substantial portions of the Software.
  14  *
  15  *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  *NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
  19  *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  20  *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  21  *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  *Except as contained in this notice, the name of Harold L Hunt II
  24  *shall not be used in advertising or otherwise to promote the sale, use
  25  *or other dealings in this Software without prior written authorization
  26  *from Harold L Hunt II.
  27  *
  28  * Authors:     Harold L Hunt II
  29  */
  30
  31 #ifdef HAVE_XWIN_CONFIG_H
  32 #include <xwin-config.h>
  33 #endif
  34 #include "win.h"
  35 #include "winmsg.h"
  36
  37
  38 /*
  39  * References to external symbols
  40  */
  41
  42 extern int                      g_iNumScreens;
  43 extern winScreenInfo            g_ScreenInfo[];
  44 extern Bool                     g_fXdmcpEnabled;
  45
  46
  47 /*
  48  * Prototypes
  49  */
  50
  51 Bool
  52 winValidateArgs (void);
  53
  54
  55 /*
  56  * winValidateArgs - Look for invalid argument combinations
  57  */
  58
  59 Bool
  60 winValidateArgs (void)
  61 {
  62   int           i;
  63   int           iMaxConsecutiveScreen = 0;
  64   BOOL          fHasNormalScreen0 = FALSE;
  65
  66   /*
  67    * Check for a malformed set of -screen parameters.
  68    * Examples of malformed parameters:
  69    *    XWin -screen 1
  70    *    XWin -screen 0 -screen 2
  71    *    XWin -screen 1 -screen 2
  72    */
  73   for (i = 0; i < MAXSCREENS; i++)
  74     {
  75       if (g_ScreenInfo[i].fExplicitScreen)
  76         iMaxConsecutiveScreen = i + 1;
  77     }
  78   winErrorFVerb (2, "winValidateArgs - g_iNumScreens: %d "
  79                  "iMaxConsecutiveScreen: %d\n",
  80                  g_iNumScreens, iMaxConsecutiveScreen);
  81   if (g_iNumScreens < iMaxConsecutiveScreen)
  82     {
  83       ErrorF ("winValidateArgs - Malformed set of screen parameter(s).  "
  84               "Screens must be specified consecutively starting with "
  85               "screen 0.  That is, you cannot have only a screen 1, nor "
  86               "could you have screen 0 and screen 2.  You instead must "
  87               "have screen 0, or screen 0 and screen 1, respectively.  Of "
  88               "you can specify as many screens as you want from 0 up to "
  89               "%d.\n", MAXSCREENS - 1);
  90       return FALSE;
  91     }
  92
  93   /* Loop through all screens */
  94   for (i = 0; i < g_iNumScreens; ++i)
  95     {
  96       /*
  97        * Check for any combination of
  98        * -multiwindow, -mwextwm, and -rootless.
  99        */
 100       {
 101         int             iCount = 0;
 102
 103         /* Count conflicting options */
 104 #ifdef XWIN_MULTIWINDOW
 105         if (g_ScreenInfo[i].fMultiWindow)
 106           ++iCount;
 107 #endif
 108 #ifdef XWIN_MULTIWINDOWEXTWM
 109         if (g_ScreenInfo[i].fMWExtWM)
 110           ++iCount;
 111 #endif
 112         if (g_ScreenInfo[i].fRootless)
 113           ++iCount;
 114
 115         /* Check if the first screen is without rootless and multiwindow */
 116         if (iCount == 0 && i == 0)
 117           fHasNormalScreen0 = TRUE;
 118
 119         /* Fail if two or more conflicting options */
 120         if (iCount > 1)
 121           {
 122             ErrorF ("winValidateArgs - Only one of -multiwindow, -mwextwm, "
 123                     "and -rootless can be specific at a time.\n");
 124             return FALSE;
 125           }
 126       }
 127
 128       /* Check for -multiwindow or -mwextwm and Xdmcp */
 129       /* allow xdmcp if screen 0 is normal. */
 130       if (g_fXdmcpEnabled && !fHasNormalScreen0
 131           && (FALSE
 132 #ifdef XWIN_MULTIWINDOW
 133               || g_ScreenInfo[i].fMultiWindow
 134 #endif
 135 #ifdef XWIN_MULTIWINDOWEXTWM
 136               || g_ScreenInfo[i].fMWExtWM
 137 #endif
 138               )
 139           )
 140         {
 141           ErrorF ("winValidateArgs - Xdmcp (-query, -broadcast, or -indirect) "
 142                   "is invalid with -multiwindow or -mwextwm.\n");
 143           return FALSE;
 144         }
 145
 146       /* Check for -multiwindow, -mwextwm, or -rootless and fullscreen */
 147       if (g_ScreenInfo[i].fFullScreen
 148           && (FALSE
 149 #ifdef XWIN_MULTIWINDOW
 150               || g_ScreenInfo[i].fMultiWindow
 151 #endif
 152 #ifdef XWIN_MULTIWINDOWEXTWM
 153               || g_ScreenInfo[i].fMWExtWM
 154 #endif
 155               || g_ScreenInfo[i].fRootless)
 156           )
 157         {
 158           ErrorF ("winValidateArgs - -fullscreen is invalid with "
 159                   "-multiwindow, -mwextwm, or -rootless.\n");
 160           return FALSE;
 161         }
 162
 163       /* Check for !fullscreen and any fullscreen-only parameters */
 164       if (!g_ScreenInfo[i].fFullScreen
 165           && (g_ScreenInfo[i].dwRefreshRate != WIN_DEFAULT_BPP
 166               || g_ScreenInfo[i].dwBPP != WIN_DEFAULT_REFRESH))
 167         {
 168           ErrorF ("winValidateArgs - -refresh and -depth are only valid "
 169                   "with -fullscreen.\n");
 170           return FALSE;
 171         }
 172
 173       /* Check for fullscreen and any non-fullscreen parameters */
 174       if (g_ScreenInfo[i].fFullScreen
 175           && (g_ScreenInfo[i].fScrollbars
 176               || !g_ScreenInfo[i].fDecoration
 177               || g_ScreenInfo[i].fLessPointer))
 178         {
 179           ErrorF ("winValidateArgs - -fullscreen is invalid with "
 180                   "-scrollbars, -nodecoration, or -lesspointer.\n");
 181           return FALSE;
 182         }
 183     }
 184
 185   winDebug ("winValidateArgs - Returning.\n");
 186
 187   return TRUE;
 188 }