path: root/xorg-server/hw/xquartz/darwin.c

/**************************************************************
 *
 * Xquartz initialization code
 *
 * Copyright (c) 2007-2008 Apple Inc.
 * Copyright (c) 2001-2004 Torrey T. Lyons. 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
 * THE ABOVE LISTED COPYRIGHT HOLDER(S) 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(s) of the above copyright
 * holders shall not be used in advertising or otherwise to promote the sale,
 * use or other dealings in this Software without prior written authorization.
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <X11/X.h>
#include <X11/Xproto.h>
#include "os.h"
#include "servermd.h"
#include "inputstr.h"
#include "scrnintstr.h"
#include "mibstore.h"		// mi backing store implementation
#include "mipointer.h"		// mi software cursor
#include "micmap.h"		// mi colormap code
#include "fb.h"			// fb framebuffer code
#include "site.h"
#include "globals.h"
#include "dix.h"
#include "xkbsrv.h"

#include <X11/extensions/XI.h>
#include <X11/extensions/XIproto.h>
#include "exevents.h"
#include "extinit.h"

#include "xserver-properties.h"

#include <sys/types.h>
#include <sys/time.h>
#include <sys/syslimits.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>

#define HAS_UTSNAME 1
#include <sys/utsname.h>

#define NO_CFPLUGIN
#include <IOKit/hidsystem/IOHIDLib.h>

#ifdef MITSHM
#include "shmint.h"
#endif

#include "darwin.h"
#include "darwinEvents.h"
#include "quartzKeyboard.h"
#include "quartz.h"

#ifdef ENABLE_DEBUG_LOG
FILE *debug_log_fp = NULL;
#endif

/*
 * X server shared global variables
 */
int                     darwinScreensFound = 0;
DevPrivateKeyRec        darwinScreenKeyRec;
io_connect_t            darwinParamConnect = 0;
int                     darwinEventReadFD = -1;
int                     darwinEventWriteFD = -1;
// int                     darwinMouseAccelChange = 1;
int                     darwinFakeButtons = 0;

// location of X11's (0,0) point in global screen coordinates
int                     darwinMainScreenX = 0;
int                     darwinMainScreenY = 0;

// parameters read from the command line or user preferences
int                     darwinDesiredDepth = -1;
int                     darwinSyncKeymap = FALSE;

// modifier masks for faking mouse buttons - ANY of these bits trigger it  (not all)
#ifdef NX_DEVICELCMDKEYMASK
int                     darwinFakeMouse2Mask = NX_DEVICELALTKEYMASK | NX_DEVICERALTKEYMASK;
int                     darwinFakeMouse3Mask = NX_DEVICELCMDKEYMASK | NX_DEVICERCMDKEYMASK;
#else
int                     darwinFakeMouse2Mask = NX_ALTERNATEMASK;
int                     darwinFakeMouse3Mask = NX_COMMANDMASK;
#endif

// Modifier mask for overriding event delivery to appkit (might be useful to set this to rcommand for input menu
unsigned int            darwinAppKitModMask = 0; // Any of these bits

// Modifier mask for items in the Window menu (0 and -1 cause shortcuts to be disabled)
unsigned int            windowItemModMask = NX_COMMANDMASK;

// devices
DeviceIntPtr            darwinKeyboard = NULL;
DeviceIntPtr            darwinPointer = NULL;
DeviceIntPtr            darwinTabletStylus = NULL;
DeviceIntPtr            darwinTabletCursor = NULL;
DeviceIntPtr            darwinTabletEraser = NULL;

// Common pixmap formats
static PixmapFormatRec formats[] = {
        { 1,    1,      BITMAP_SCANLINE_PAD },
        { 4,    8,      BITMAP_SCANLINE_PAD },
        { 8,    8,      BITMAP_SCANLINE_PAD },
        { 15,   16,     BITMAP_SCANLINE_PAD },
        { 16,   16,     BITMAP_SCANLINE_PAD },
        { 24,   32,     BITMAP_SCANLINE_PAD },
        { 32,   32,     BITMAP_SCANLINE_PAD }
};
const int NUMFORMATS = sizeof(formats)/sizeof(formats[0]);

void
DarwinPrintBanner(void)
{ 
  ErrorF("Xquartz starting:\n");
  ErrorF("X.Org X Server %s\n", XSERVER_VERSION);
  ErrorF("Build Date: %s\n", BUILD_DATE );
}


/*
 * DarwinSaveScreen
 *  X screensaver support. Not implemented.
 */
static Bool DarwinSaveScreen(ScreenPtr pScreen, int on)
{
    // FIXME
    if (on == SCREEN_SAVER_FORCER) {
    } else if (on == SCREEN_SAVER_ON) {
    } else {
    }
    return TRUE;
}

/*
 * DarwinScreenInit
 *  This is a callback from dix during AddScreen() from InitOutput().
 *  Initialize the screen and communicate information about it back to dix.
 */
static Bool DarwinScreenInit(int index, ScreenPtr pScreen, int argc, char **argv) {
    int         dpi;
    static int  foundIndex = 0;
    Bool        ret;
    DarwinFramebufferPtr dfb;

    if (!dixRegisterPrivateKey(&darwinScreenKeyRec, PRIVATE_SCREEN, 0))
	return FALSE;

    // reset index of found screens for each server generation
    if (index == 0) {
        foundIndex = 0;

        // reset the visual list
        miClearVisualTypes();
    }

    // allocate space for private per screen storage
    dfb = malloc(sizeof(DarwinFramebufferRec));

    // SCREEN_PRIV(pScreen) = dfb;
    dixSetPrivate(&pScreen->devPrivates, darwinScreenKey, dfb);

    // setup hardware/mode specific details
    ret = QuartzAddScreen(foundIndex, pScreen);
    foundIndex++;
    if (! ret)
        return FALSE;

    // setup a single visual appropriate for our pixel type
    if(!miSetVisualTypesAndMasks(dfb->depth, dfb->visuals, dfb->bitsPerRGB,
                                 dfb->preferredCVC, dfb->redMask,
                                 dfb->greenMask, dfb->blueMask)) {
        return FALSE;
    }
  
// TODO: Make PseudoColor visuals not suck in TrueColor mode  
//    if(dfb->depth > 8)
//        miSetVisualTypesAndMasks(8, PseudoColorMask, 8, PseudoColor, 0, 0, 0);
    if(dfb->depth > 15)
        miSetVisualTypesAndMasks(15, TrueColorMask, 5, TrueColor, RM_ARGB(0,5,5,5), GM_ARGB(0,5,5,5), BM_ARGB(0,5,5,5));
    if(dfb->depth > 24)
        miSetVisualTypesAndMasks(24, TrueColorMask, 8, TrueColor, RM_ARGB(0,8,8,8), GM_ARGB(0,8,8,8), BM_ARGB(0,8,8,8));

    miSetPixmapDepths();

    // machine independent screen init
    // setup _Screen structure in pScreen
    if (monitorResolution)
        dpi = monitorResolution;
    else
        dpi = 96;

    // initialize fb
    if (! fbScreenInit(pScreen,
                dfb->framebuffer,                 // pointer to screen bitmap
                dfb->width, dfb->height,          // screen size in pixels
                dpi, dpi,                         // dots per inch
                dfb->pitch/(dfb->bitsPerPixel/8), // pixel width of framebuffer
                dfb->bitsPerPixel))               // bits per pixel for screen
    {
        return FALSE;
    }

    if (! fbPictureInit(pScreen, 0, 0)) {
        return FALSE;
    }

#ifdef MITSHM
    ShmRegisterFbFuncs(pScreen);
#endif

    // this must be initialized (why doesn't X have a default?)
    pScreen->SaveScreen = DarwinSaveScreen;

    // finish mode dependent screen setup including cursor support
    if (!QuartzSetupScreen(index, pScreen)) {
        return FALSE;
    }

    // create and install the default colormap and
    // set pScreen->blackPixel / pScreen->white
    if (!miCreateDefColormap( pScreen )) {
        return FALSE;
    }

    pScreen->x = dfb->x;
    pScreen->y = dfb->y;

    /*    ErrorF("Screen %d added: %dx%d @ (%d,%d)\n",
	  index, dfb->width, dfb->height, dfb->x, dfb->y); */

    return TRUE;
}

/*
 =============================================================================

 mouse and keyboard callbacks

 =============================================================================
*/

/*
 * DarwinMouseProc: Handle the initialization, etc. of a mouse
 */
static int DarwinMouseProc(DeviceIntPtr pPointer, int what) {
#define NBUTTONS 7
#define NAXES 2
	// 7 buttons: left, right, middle, then four scroll wheel "buttons"
    CARD8 map[NBUTTONS + 1] = {0, 1, 2, 3, 4, 5, 6, 7};
    Atom btn_labels[NBUTTONS] = {0};
    Atom axes_labels[NAXES] = {0};

    switch (what) {
        case DEVICE_INIT:
            pPointer->public.on = FALSE;

            btn_labels[0] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_LEFT);
            btn_labels[1] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_MIDDLE);
            btn_labels[2] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_RIGHT);
            btn_labels[3] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_UP);
            btn_labels[4] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_DOWN);
            btn_labels[5] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_LEFT);
            btn_labels[6] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_RIGHT);

            axes_labels[0] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_X);
            axes_labels[1] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_Y);


            // Set button map.
            InitPointerDeviceStruct((DevicePtr)pPointer, map, NBUTTONS,
                                    btn_labels,
                                    (PtrCtrlProcPtr)NoopDDA,
                                    GetMotionHistorySize(), NAXES,
                                    axes_labels);
//            InitValuatorAxisStruct(pPointer, 0, 0, XQUARTZ_VALUATOR_LIMIT, 1, 0, 1, Absolute);
//            InitValuatorAxisStruct(pPointer, 1, 0, XQUARTZ_VALUATOR_LIMIT, 1, 0, 1, Absolute);
            break;
        case DEVICE_ON:
            pPointer->public.on = TRUE;
            AddEnabledDevice( darwinEventReadFD );
            return Success;
        case DEVICE_CLOSE:
        case DEVICE_OFF:
            pPointer->public.on = FALSE;
            RemoveEnabledDevice(darwinEventReadFD);
            return Success;
    }
    
    return Success;
#undef NBUTTONS
#undef NAXES
}

static int DarwinTabletProc(DeviceIntPtr pPointer, int what) {
#define NBUTTONS 3
#define NAXES 5
    CARD8 map[NBUTTONS + 1] = {0, 1, 2, 3};
    Atom btn_labels[NBUTTONS] = {0};
    Atom axes_labels[NAXES] = {0};

    switch (what) {
        case DEVICE_INIT:
            pPointer->public.on = FALSE;

            btn_labels[0] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_LEFT);
            btn_labels[1] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_MIDDLE);
            btn_labels[2] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_RIGHT);

            axes_labels[0] = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_X);
            axes_labels[1] = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_Y);
            axes_labels[2] = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_PRESSURE);
            axes_labels[3] = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_TILT_X);
            axes_labels[4] = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_TILT_Y);

            // Set button map.
            InitPointerDeviceStruct((DevicePtr)pPointer, map, NBUTTONS,
                                    btn_labels,
                                    (PtrCtrlProcPtr)NoopDDA,
                                    GetMotionHistorySize(), NAXES,
                                    axes_labels);
            InitProximityClassDeviceStruct(pPointer);

            InitValuatorAxisStruct(pPointer, 0, axes_labels[0], 0, XQUARTZ_VALUATOR_LIMIT, 1, 0, 1, Absolute);
            InitValuatorAxisStruct(pPointer, 1, axes_labels[1], 0, XQUARTZ_VALUATOR_LIMIT, 1, 0, 1, Absolute);
            InitValuatorAxisStruct(pPointer, 2, axes_labels[2], 0, XQUARTZ_VALUATOR_LIMIT, 1, 0, 1, Absolute);
            InitValuatorAxisStruct(pPointer, 3, axes_labels[3], -XQUARTZ_VALUATOR_LIMIT, XQUARTZ_VALUATOR_LIMIT, 1, 0, 1, Absolute);
            InitValuatorAxisStruct(pPointer, 4, axes_labels[4], -XQUARTZ_VALUATOR_LIMIT, XQUARTZ_VALUATOR_LIMIT, 1, 0, 1, Absolute);
//          pPointer->use = IsXExtensionDevice;
            break;
        case DEVICE_ON:
            pPointer->public.on = TRUE;
            AddEnabledDevice( darwinEventReadFD );
            return Success;
        case DEVICE_CLOSE:
        case DEVICE_OFF:
            pPointer->public.on = FALSE;
            RemoveEnabledDevice(darwinEventReadFD);
            return Success;
    }
    return Success;
#undef NBUTTONS
#undef NAXES
}

/*
 * DarwinKeybdProc
 *  Callback from X
 */
static int DarwinKeybdProc( DeviceIntPtr pDev, int onoff )
{
    switch ( onoff ) {
        case DEVICE_INIT:
            DarwinKeyboardInit( pDev );
            break;
        case DEVICE_ON:
            pDev->public.on = TRUE;
            AddEnabledDevice( darwinEventReadFD );
            break;
        case DEVICE_OFF:
            pDev->public.on = FALSE;
            RemoveEnabledDevice( darwinEventReadFD );
            break;
        case DEVICE_CLOSE:
            break;
    }

    return Success;
}

/*
===========================================================================

 Utility routines

===========================================================================
*/

/*
 * DarwinParseModifierList
 *  Parse a list of modifier names and return a corresponding modifier mask
 */
int DarwinParseModifierList(const char *constmodifiers, int separatelr)
{
    int result = 0;

    if (constmodifiers) {
        char *modifiers = strdup(constmodifiers);
        char *modifier;
        int nxkey;
        char *p = modifiers;

        while (p) {
            modifier = strsep(&p, " ,+&|/"); // allow lots of separators
            nxkey = DarwinModifierStringToNXMask(modifier, separatelr);
            if(nxkey)
                result |= nxkey;
            else
                ErrorF("fakebuttons: Unknown modifier \"%s\"\n", modifier);
        }
        free(modifiers);
    }
    return result;
}

/*
===========================================================================

 Functions needed to link against device independent X

===========================================================================
*/

/*
 * InitInput
 *  Register the keyboard and mouse devices
 */
void InitInput( int argc, char **argv )
{
    XkbRMLVOSet rmlvo = { .rules = "base", .model = "empty", .layout = "empty",
                          .variant = NULL, .options = NULL };
    /* We need to really have rules... or something... */
    XkbSetRulesDflts(&rmlvo);

    darwinKeyboard = AddInputDevice(serverClient, DarwinKeybdProc, TRUE);
    darwinKeyboard->name = strdup("keyboard");

    /* here's the snippet from the current gdk sources:
    if (!strcmp (tmp_name, "pointer"))
        gdkdev->info.source = GDK_SOURCE_MOUSE;
    else if (!strcmp (tmp_name, "wacom") ||
             !strcmp (tmp_name, "pen"))
        gdkdev->info.source = GDK_SOURCE_PEN;
    else if (!strcmp (tmp_name, "eraser"))
        gdkdev->info.source = GDK_SOURCE_ERASER;
    else if (!strcmp (tmp_name, "cursor"))
        gdkdev->info.source = GDK_SOURCE_CURSOR;
    else
        gdkdev->info.source = GDK_SOURCE_PEN;
    */

    darwinPointer = AddInputDevice(serverClient, DarwinMouseProc, TRUE);
    darwinPointer->name = strdup("pointer");

    darwinTabletStylus = AddInputDevice(serverClient, DarwinTabletProc, TRUE);
    darwinTabletStylus->name = strdup("pen");

    darwinTabletCursor = AddInputDevice(serverClient, DarwinTabletProc, TRUE);
    darwinTabletCursor->name = strdup("cursor");

    darwinTabletEraser = AddInputDevice(serverClient, DarwinTabletProc, TRUE);
    darwinTabletEraser->name = strdup("eraser");

    DarwinEQInit();

    QuartzInitInput(argc, argv);
}


/*
 * DarwinAdjustScreenOrigins
 *  Shift all screens so the X11 (0, 0) coordinate is at the top
 *  left of the global screen coordinates.
 *
 *  Screens can be arranged so the top left isn't on any screen, so
 *  instead use the top left of the leftmost screen as (0,0). This
 *  may mean some screen space is in -y, but it's better that (0,0)
 *  be onscreen, or else default xterms disappear. It's better that
 *  -y be used than -x, because when popup menus are forced
 *  "onscreen" by dumb window managers like twm, they'll shift the
 *  menus down instead of left, which still looks funny but is an
 *  easier target to hit.
 */
void
DarwinAdjustScreenOrigins(ScreenInfo *pScreenInfo)
{
    int i, left, top;

    left = pScreenInfo->screens[0]->x;
    top  = pScreenInfo->screens[0]->y;

    /* Find leftmost screen. If there's a tie, take the topmost of the two. */
    for (i = 1; i < pScreenInfo->numScreens; i++) {
        if (pScreenInfo->screens[i]->x < left  ||
            (pScreenInfo->screens[i]->x == left && pScreenInfo->screens[i]->y < top))
        {
            left = pScreenInfo->screens[i]->x;
            top = pScreenInfo->screens[i]->y;
        }
    }

    darwinMainScreenX = left;
    darwinMainScreenY = top;
    
    DEBUG_LOG("top = %d, left=%d\n", top, left);

    /* Shift all screens so that there is a screen whose top left
     * is at X11 (0,0) and at global screen coordinate
     * (darwinMainScreenX, darwinMainScreenY).
     */

    if (darwinMainScreenX != 0 || darwinMainScreenY != 0) {
        for (i = 0; i < pScreenInfo->numScreens; i++) {
            pScreenInfo->screens[i]->x -= darwinMainScreenX;
            pScreenInfo->screens[i]->y -= darwinMainScreenY;
            DEBUG_LOG("Screen %d placed at X11 coordinate (%d,%d).\n",
                      i, pScreenInfo->screens[i]->x, pScreenInfo->screens[i]->y);
        }
    }
}


/*
 * InitOutput
 *  Initialize screenInfo for all actually accessible framebuffers.
 *
 *  The display mode dependent code gets called three times. The mode
 *  specific InitOutput routines are expected to discover the number
 *  of potentially useful screens and cache routes to them internally.
 *  Inside DarwinScreenInit are two other mode specific calls.
 *  A mode specific AddScreen routine is called for each screen to
 *  actually initialize the screen with the ScreenPtr structure.
 *  After other screen setup has been done, a mode specific
 *  SetupScreen function can be called to finalize screen setup.
 */
void InitOutput( ScreenInfo *pScreenInfo, int argc, char **argv )
{
    int i;

    pScreenInfo->imageByteOrder = IMAGE_BYTE_ORDER;
    pScreenInfo->bitmapScanlineUnit = BITMAP_SCANLINE_UNIT;
    pScreenInfo->bitmapScanlinePad = BITMAP_SCANLINE_PAD;
    pScreenInfo->bitmapBitOrder = BITMAP_BIT_ORDER;

    // List how we want common pixmap formats to be padded
    pScreenInfo->numPixmapFormats = NUMFORMATS;
    for (i = 0; i < NUMFORMATS; i++)
        pScreenInfo->formats[i] = formats[i];

    // Discover screens and do mode specific initialization
    QuartzInitOutput(argc, argv);

    // Add screens
    for (i = 0; i < darwinScreensFound; i++) {
        AddScreen(DarwinScreenInit, argc, argv);
    }

    DarwinAdjustScreenOrigins(pScreenInfo);
}


/*
 * OsVendorFatalError
 */
void OsVendorFatalError( void )
{
    ErrorF( "   OsVendorFatalError\n" );
}


/*
 * OsVendorInit
 *  Initialization of Darwin OS support.
 */
void OsVendorInit(void)
{
    if (serverGeneration == 1) {
        char *lf;
        char *home = getenv("HOME");
        assert(home);
        assert(0 < asprintf(&lf, "%s/Library/Logs/X11.%s.log", home, bundle_id_prefix));
        LogInit(lf, ".old");
        free(lf);

        DarwinPrintBanner();
#ifdef ENABLE_DEBUG_LOG
	{
	  char *home_dir=NULL, *log_file_path=NULL;
	  home_dir = getenv("HOME");
	  if (home_dir) asprintf(&log_file_path, "%s/%s", home_dir, DEBUG_LOG_NAME);
	  if (log_file_path) {
	    if (!access(log_file_path, F_OK)) {
	      debug_log_fp = fopen(log_file_path, "a");
	      if (debug_log_fp) ErrorF("Debug logging enabled to %s\n", log_file_path);
	    }
	    free(log_file_path);
	  }
	}
#endif
    }
}


/*
 * ddxProcessArgument
 *  Process device-dependent command line args. Returns 0 if argument is
 *  not device dependent, otherwise Count of number of elements of argv
 *  that are part of a device dependent commandline option.
 */
int ddxProcessArgument( int argc, char *argv[], int i )
{
//    if ( !strcmp( argv[i], "-fullscreen" ) ) {
//        ErrorF( "Running full screen in parallel with Mac OS X Quartz window server.\n" );
//        return 1;
//    }

//    if ( !strcmp( argv[i], "-rootless" ) ) {
//        ErrorF( "Running rootless inside Mac OS X window server.\n" );
//        return 1;
//    }

    // This command line arg is passed when launched from the Aqua GUI.
    if ( !strncmp( argv[i], "-psn_", 5 ) ) {
        return 1;
    }

    if ( !strcmp( argv[i], "-fakebuttons" ) ) {
        darwinFakeButtons = TRUE;
        ErrorF( "Faking a three button mouse\n" );
        return 1;
    }

    if ( !strcmp( argv[i], "-nofakebuttons" ) ) {
        darwinFakeButtons = FALSE;
        ErrorF( "Not faking a three button mouse\n" );
        return 1;
    }

    if (!strcmp( argv[i], "-fakemouse2" ) ) {
        if ( i == argc-1 ) {
            FatalError( "-fakemouse2 must be followed by a modifer list\n" );
        }
        if (!strcasecmp(argv[i+1], "none") || !strcmp(argv[i+1], ""))
            darwinFakeMouse2Mask = 0;
        else
            darwinFakeMouse2Mask = DarwinParseModifierList(argv[i+1], 1);
        ErrorF("Modifier mask to fake mouse button 2 = 0x%x\n",
               darwinFakeMouse2Mask);
        return 2;
    }

    if (!strcmp( argv[i], "-fakemouse3" ) ) {
        if ( i == argc-1 ) {
            FatalError( "-fakemouse3 must be followed by a modifer list\n" );
        }
        if (!strcasecmp(argv[i+1], "none") || !strcmp(argv[i+1], ""))
            darwinFakeMouse3Mask = 0;
        else
            darwinFakeMouse3Mask = DarwinParseModifierList(argv[i+1], 1);
        ErrorF("Modifier mask to fake mouse button 3 = 0x%x\n",
               darwinFakeMouse3Mask);
        return 2;
    }

    if ( !strcmp( argv[i], "+synckeymap" ) ) {
        darwinSyncKeymap = TRUE;
        return 1;
    }

    if ( !strcmp( argv[i], "-synckeymap" ) ) {
        darwinSyncKeymap = FALSE;
        return 1;
    }

    if ( !strcmp( argv[i], "-depth" ) ) {
        if ( i == argc-1 ) {
            FatalError( "-depth must be followed by a number\n" );
        }
        darwinDesiredDepth = atoi( argv[i+1] );
        if(darwinDesiredDepth != -1 &&
           darwinDesiredDepth != 8 &&
           darwinDesiredDepth != 15 &&
           darwinDesiredDepth != 24) {
            FatalError( "Unsupported pixel depth. Use 8, 15, or 24 bits\n" );
        }

        ErrorF( "Attempting to use pixel depth of %i\n", darwinDesiredDepth );
        return 2;
    }

    if (!strcmp( argv[i], "-showconfig" ) || !strcmp( argv[i], "-version" )) {
        DarwinPrintBanner();
        exit(0);
    }

    return 0;
}


/*
 * ddxUseMsg --
 *  Print out correct use of device dependent commandline options.
 *  Maybe the user now knows what really to do ...
 */
void ddxUseMsg( void )
{
    ErrorF("\n");
    ErrorF("\n");
    ErrorF("Device Dependent Usage:\n");
    ErrorF("\n");
    ErrorF("-depth <8,15,24> : use this bit depth.\n");
    ErrorF("-fakebuttons : fake a three button mouse with Command and Option keys.\n");
    ErrorF("-nofakebuttons : don't fake a three button mouse.\n");
    ErrorF("-fakemouse2 <modifiers> : fake middle mouse button with modifier keys.\n");
    ErrorF("-fakemouse3 <modifiers> : fake right mouse button with modifier keys.\n");
    ErrorF("  ex: -fakemouse2 \"option,shift\" = option-shift-click is middle button.\n");
    ErrorF("-version : show the server version.\n");
    ErrorF("\n");
}


/*
 * ddxGiveUp --
 *      Device dependent cleanup. Called by dix before normal server death.
 */
void ddxGiveUp( void )
{
    ErrorF( "Quitting Xquartz\n" );
}


/*
 * AbortDDX --
 *      DDX - specific abort routine.  Called by AbortServer(). The attempt is
 *      made to restore all original setting of the displays. Also all devices
 *      are closed.
 */
void AbortDDX( void )
{
    ErrorF( "   AbortDDX\n" );
    OsAbort();
}