Bug 777: Merge from CYGWIN branch

1 files changed, 185 insertions, 0 deletions

diff --git a/hw/xwin/winvalargs.c b/hw/xwin/winvalargs.c
new file mode 100755
index 000000000..0932644bb
--- /dev/null
+++ b/hw/xwin/winvalargs.c
@@ -0,0 +1,185 @@
+/*
+ *Copyright (C) 2003-2004 Harold L Hunt II All Rights Reserved.
+ *
+ *Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ *"Software"), to deal in the Software without restriction, including
+ *without limitation the rights to use, copy, modify, merge, publish,
+ *distribute, sublicense, and/or sell copies of the Software, and to
+ *permit persons to whom the Software is furnished to do so, subject to
+ *the following conditions:
+ *
+ *The above copyright notice and this permission notice shall be
+ *included in all copies or substantial portions of the Software.
+ *
+ *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
+ *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *Except as contained in this notice, the name of Harold L Hunt II
+ *shall not be used in advertising or otherwise to promote the sale, use
+ *or other dealings in this Software without prior written authorization
+ *from Harold L Hunt II.
+ *
+ * Authors:	Harold L Hunt II
+ */
+
+#include "win.h"
+#include "winmsg.h"
+
+
+/*
+ * References to external symbols
+ */
+
+extern int			g_iNumScreens;
+extern winScreenInfo		g_ScreenInfo[];
+extern Bool			g_fXdmcpEnabled;
+
+
+/*
+ * Prototypes
+ */
+
+Bool
+winValidateArgs (void);
+
+
+/*
+ * winValidateArgs - Look for invalid argument combinations
+ */
+
+Bool
+winValidateArgs (void)
+{
+  int		i;
+  int		iMaxConsecutiveScreen = 0;
+  BOOL		fHasNormalScreen0 = FALSE;
+
+  /*
+   * Check for a malformed set of -screen parameters.
+   * Examples of malformed parameters:
+   *	XWin -screen 1
+   *	XWin -screen 0 -screen 2
+   *	XWin -screen 1 -screen 2
+   */
+  for (i = 0; i < MAXSCREENS; i++)
+    {
+      if (g_ScreenInfo[i].fExplicitScreen)
+	iMaxConsecutiveScreen = i + 1;
+    }
+  winErrorFVerb (2, "winValidateArgs - g_iNumScreens: %d "
+		 "iMaxConsecutiveScreen: %d\n",
+		 g_iNumScreens, iMaxConsecutiveScreen);
+  if (g_iNumScreens < iMaxConsecutiveScreen)
+    {
+      ErrorF ("winValidateArgs - Malformed set of screen parameter(s).  "
+	      "Screens must be specified consecutively starting with "
+	      "screen 0.  That is, you cannot have only a screen 1, nor "
+	      "could you have screen 0 and screen 2.  You instead must "
+	      "have screen 0, or screen 0 and screen 1, respectively.  Of "
+	      "you can specify as many screens as you want from 0 up to "
+	      "%d.\n", MAXSCREENS - 1);
+      return FALSE;
+    }
+
+  /* Loop through all screens */
+  for (i = 0; i < g_iNumScreens; ++i)
+    {
+      /*
+       * Check for any combination of
+       * -multiwindow, -mwextwm, and -rootless.
+       */
+      {
+	int		iCount = 0;
+
+	/* Count conflicting options */
+#ifdef XWIN_MULTIWINDOW
+	if (g_ScreenInfo[i].fMultiWindow)
+	  ++iCount;
+#endif
+#ifdef XWIN_MULTIWINDOWEXTWM
+	if (g_ScreenInfo[i].fMWExtWM)
+	  ++iCount;
+#endif
+	if (g_ScreenInfo[i].fRootless)
+	  ++iCount;
+
+	/* Check if the first screen is without rootless and multiwindow */ 
+	if (iCount == 0 && i == 0)
+	  fHasNormalScreen0 = TRUE;  
+
+	/* Fail if two or more conflicting options */
+	if (iCount > 1)
+	  {
+	    ErrorF ("winValidateArgs - Only one of -multiwindow, -mwextwm, "
+		    "and -rootless can be specific at a time.\n");
+	    return FALSE;
+	  }
+      }
+
+      /* Check for -multiwindow or -mwextwm and Xdmcp */
+      /* allow xdmcp if screen 0 is normal. */
+      if (g_fXdmcpEnabled && !fHasNormalScreen0
+	  && (FALSE
+#ifdef XWIN_MULTIWINDOW
+	      || g_ScreenInfo[i].fMultiWindow
+#endif
+#ifdef XWIN_MULTIWINDOWEXTWM
+	      || g_ScreenInfo[i].fMWExtWM
+#endif
+	      )
+	  )
+	{
+	  ErrorF ("winValidateArgs - Xdmcp (-query, -broadcast, or -indirect) "
+		  "is invalid with -multiwindow or -mwextwm.\n");
+	  return FALSE;
+	}
+
+      /* Check for -multiwindow, -mwextwm, or -rootless and fullscreen */
+      if (g_ScreenInfo[i].fFullScreen
+	  && (FALSE
+#ifdef XWIN_MULTIWINDOW
+	      || g_ScreenInfo[i].fMultiWindow
+#endif
+#ifdef XWIN_MULTIWINDOWEXTWM
+	      || g_ScreenInfo[i].fMWExtWM
+#endif
+	      || g_ScreenInfo[i].fRootless)
+	  )
+	{
+	  ErrorF ("winValidateArgs - -fullscreen is invalid with "
+		  "-multiwindow, -mwextwm, or -rootless.\n");
+	  return FALSE;
+	}
+      
+      /* Check for !fullscreen and any fullscreen-only parameters */
+      if (!g_ScreenInfo[i].fFullScreen
+	  && (g_ScreenInfo[i].dwRefreshRate != WIN_DEFAULT_BPP
+	      || g_ScreenInfo[i].dwBPP != WIN_DEFAULT_REFRESH))
+	{
+	  ErrorF ("winValidateArgs - -refresh and -depth are only valid "
+		  "with -fullscreen.\n");
+	  return FALSE;
+	}
+
+      /* Check for fullscreen and any non-fullscreen parameters */
+      if (g_ScreenInfo[i].fFullScreen
+	  && (g_ScreenInfo[i].fScrollbars
+	      || !g_ScreenInfo[i].fDecoration
+	      || g_ScreenInfo[i].fLessPointer))
+	{
+	  ErrorF ("winValidateArgs - -fullscreen is invalid with "
+		  "-scrollbars, -nodecoration, or -lesspointer.\n");
+	  return FALSE;
+	}
+    }
+
+  winDebug ("winValidateArgs - Returning.\n");
+
+  return TRUE;
+}