winvalargs.c revision 35c4bbdf 
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 * Verify all screens have been explicitly specified
39 */
40static BOOL
41isEveryScreenExplicit(void)
42{
43    int i;
44
45    for (i = 0; i < g_iNumScreens; i++)
46        if (!g_ScreenInfo[i].fExplicitScreen)
47            return FALSE;
48
49    return TRUE;
50}
51
52/*
53 * winValidateArgs - Look for invalid argument combinations
54 */
55
56Bool
57winValidateArgs(void)
58{
59    int i;
60    BOOL fHasNormalScreen0 = FALSE;
61
62    /*
63     * Check for a malformed set of -screen parameters.
64     * Examples of malformed parameters:
65     *    XWin -screen 1
66     *    XWin -screen 0 -screen 2
67     *    XWin -screen 1 -screen 2
68     */
69    if (!isEveryScreenExplicit()) {
70        ErrorF("winValidateArgs - Malformed set of screen parameter(s).  "
71               "Screens must be specified consecutively starting with "
72               "screen 0.  That is, you cannot have only a screen 1, nor "
73               "could you have screen 0 and screen 2.  You instead must "
74               "have screen 0, or screen 0 and screen 1, respectively.  "
75               "You can specify as many screens as you want.\n");
76        return FALSE;
77    }
78
79    /* Loop through all screens */
80    for (i = 0; i < g_iNumScreens; ++i) {
81        /*
82         * Check for any combination of
83         * -multiwindow, -mwextwm, and -rootless.
84         */
85        {
86            int iCount = 0;
87
88            /* Count conflicting options */
89#ifdef XWIN_MULTIWINDOW
90            if (g_ScreenInfo[i].fMultiWindow)
91                ++iCount;
92#endif
93#ifdef XWIN_MULTIWINDOWEXTWM
94            if (g_ScreenInfo[i].fMWExtWM)
95                ++iCount;
96#endif
97            if (g_ScreenInfo[i].fRootless)
98                ++iCount;
99
100            /* Check if the first screen is without rootless and multiwindow */
101            if (iCount == 0 && i == 0)
102                fHasNormalScreen0 = TRUE;
103
104            /* Fail if two or more conflicting options */
105            if (iCount > 1) {
106                ErrorF("winValidateArgs - Only one of -multiwindow, -mwextwm, "
107                       "and -rootless can be specific at a time.\n");
108                return FALSE;
109            }
110        }
111
112        /* Check for -multiwindow or -mwextwm and Xdmcp */
113        /* allow xdmcp if screen 0 is normal. */
114        if (g_fXdmcpEnabled && !fHasNormalScreen0 && (FALSE
115#ifdef XWIN_MULTIWINDOW
116                                                      || g_ScreenInfo[i].
117                                                      fMultiWindow
118#endif
119#ifdef XWIN_MULTIWINDOWEXTWM
120                                                      || g_ScreenInfo[i].
121                                                      fMWExtWM
122#endif
123            )
124            ) {
125            ErrorF("winValidateArgs - Xdmcp (-query, -broadcast, or -indirect) "
126                   "is invalid with -multiwindow or -mwextwm.\n");
127            return FALSE;
128        }
129
130        /* Check for -multiwindow, -mwextwm, or -rootless and fullscreen */
131        if (g_ScreenInfo[i].fFullScreen && (FALSE
132#ifdef XWIN_MULTIWINDOW
133                                            || g_ScreenInfo[i].fMultiWindow
134#endif
135#ifdef XWIN_MULTIWINDOWEXTWM
136                                            || g_ScreenInfo[i].fMWExtWM
137#endif
138                                            || g_ScreenInfo[i].fRootless)
139            ) {
140            ErrorF("winValidateArgs - -fullscreen is invalid with "
141                   "-multiwindow, -mwextwm, or -rootless.\n");
142            return FALSE;
143        }
144
145        /* Check for !fullscreen and any fullscreen-only parameters */
146        if (!g_ScreenInfo[i].fFullScreen
147            && (g_ScreenInfo[i].dwRefreshRate != WIN_DEFAULT_REFRESH
148                || g_ScreenInfo[i].dwBPP != WIN_DEFAULT_BPP)) {
149            ErrorF("winValidateArgs - -refresh and -depth are only valid "
150                   "with -fullscreen.\n");
151            return FALSE;
152        }
153
154        /* Check for fullscreen and any non-fullscreen parameters */
155        if (g_ScreenInfo[i].fFullScreen
156            && ((g_ScreenInfo[i].iResizeMode != notAllowed)
157                || !g_ScreenInfo[i].fDecoration
158                || g_ScreenInfo[i].fLessPointer)) {
159            ErrorF("winValidateArgs - -fullscreen is invalid with "
160                   "-scrollbars, -resize, -nodecoration, or -lesspointer.\n");
161            return FALSE;
162        }
163    }
164
165    winDebug("winValidateArgs - Returning.\n");
166
167    return TRUE;
168}
169