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 and -rootless.
84         */
85        {
86            int iCount = 0;
87
88            /* Count conflicting options */
89            if (g_ScreenInfo[i].fMultiWindow)
90                ++iCount;
91
92            if (g_ScreenInfo[i].fRootless)
93                ++iCount;
94
95            /* Check if the first screen is without rootless and multiwindow */
96            if (iCount == 0 && i == 0)
97                fHasNormalScreen0 = TRUE;
98
99            /* Fail if two or more conflicting options */
100            if (iCount > 1) {
101                ErrorF("winValidateArgs - Only one of -multiwindow "
102                       "and -rootless can be specific at a time.\n");
103                return FALSE;
104            }
105        }
106
107        /* Check for -multiwindow and Xdmcp */
108        /* allow xdmcp if screen 0 is normal. */
109        if (g_fXdmcpEnabled && !fHasNormalScreen0 && (FALSE
110                                                      || g_ScreenInfo[i].
111                                                      fMultiWindow
112
113            )
114            ) {
115            ErrorF("winValidateArgs - Xdmcp (-query, -broadcast, or -indirect) "
116                   "is invalid with -multiwindow.\n");
117            return FALSE;
118        }
119
120        /* Check for -multiwindow or -rootless and -fullscreen */
121        if (g_ScreenInfo[i].fFullScreen && (FALSE
122                                            || g_ScreenInfo[i].fMultiWindow
123                                            || g_ScreenInfo[i].fRootless)
124            ) {
125            ErrorF("winValidateArgs - -fullscreen is invalid with "
126                   "-multiwindow or -rootless.\n");
127            return FALSE;
128        }
129
130        /* Check for -multiwindow or -rootless and -nodecoration */
131        if (!g_ScreenInfo[i].fDecoration && (FALSE
132                                            || g_ScreenInfo[i].fMultiWindow
133                                            || g_ScreenInfo[i].fRootless)
134            ) {
135            ErrorF("winValidateArgs - -nodecoration is invalid with "
136                   "-multiwindow or -rootless.\n");
137            return FALSE;
138        }
139
140        /* Check for !fullscreen and any fullscreen-only parameters */
141        if (!g_ScreenInfo[i].fFullScreen
142            && (g_ScreenInfo[i].dwRefreshRate != WIN_DEFAULT_REFRESH
143                || g_ScreenInfo[i].dwBPP != WIN_DEFAULT_BPP)) {
144            ErrorF("winValidateArgs - -refresh and -depth are only valid "
145                   "with -fullscreen.\n");
146            return FALSE;
147        }
148
149        /* Check for fullscreen and any non-fullscreen parameters */
150        if (g_ScreenInfo[i].fFullScreen
151            && ((g_ScreenInfo[i].iResizeMode != resizeNotAllowed)
152                || !g_ScreenInfo[i].fDecoration
153                || g_ScreenInfo[i].fLessPointer)) {
154            ErrorF("winValidateArgs - -fullscreen is invalid with "
155                   "-scrollbars, -resize, -nodecoration, or -lesspointer.\n");
156            return FALSE;
157        }
158
159        /* Ignore -swcursor if -multiwindow -compositewm is requested */
160        if (g_ScreenInfo[i].fMultiWindow && g_ScreenInfo[i].fCompositeWM) {
161            if (g_fSoftwareCursor) {
162                g_fSoftwareCursor = FALSE;
163                winMsg(X_WARNING, "Ignoring -swcursor due to -compositewm\n");
164            }
165        }
166    }
167
168    winDebug("winValidateArgs - Returning.\n");
169
170    return TRUE;
171}
172