xserver-multidpi/hw/xquartz/darwin.c

/**************************************************************
 *
 * Xquartz initialization code
 *
 * Copyright (c) 2007-2012 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 "mipointer.h"          // mi software cursor
#include "micmap.h"             // mi colormap code
#include "fb.h"                 // fb framebuffer code
#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 "glx_extinit.h"
#include "xserver-properties.h"

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

#include "X11Application.h"

aslclient aslc;

void
xq_asl_log(int level, const char *subsystem, const char *file,
           const char *function, int line, const char *fmt,
           ...)
{
    va_list args;
    aslmsg msg = asl_new(ASL_TYPE_MSG);

    if (msg) {
        char *_line;

        asl_set(msg, "File", file);
        asl_set(msg, "Function", function);
        asprintf(&_line, "%d", line);
        if (_line) {
            asl_set(msg, "Line", _line);
            free(_line);
        }
        if (subsystem)
            asl_set(msg, "Subsystem", subsystem);
    }

    va_start(args, fmt);
    asl_vlog(aslc, msg, level, fmt, args);
    va_end(args);

    if (msg)
        asl_free(msg);
}

/*
 * 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    }
};

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

/*
 * 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(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 (pScreen->myNum == 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);
    //
    // TODO: Re-add support for 15bit
    // 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

    // finish mode dependent screen setup including cursor support
    if (!QuartzSetupScreen(pScreen->myNum, 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

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

static void
DarwinInputHandlerNotify(int fd __unused, int ready __unused, void *data __unused)
{
}

/*
 * DarwinMouseProc: Handle the initialization, etc. of a mouse
 */
static int
DarwinMouseProc(DeviceIntPtr pPointer, int what)
{
#define NBUTTONS 3
#define NAXES    6
    // 3 buttons: left, middle, right
    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_REL_X);
        axes_labels[3] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_Y);
        axes_labels[4] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_WHEEL);
        axes_labels[5] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_HWHEEL);

        // Set button map.
        InitPointerDeviceStruct((DevicePtr)pPointer, map, NBUTTONS,
                                btn_labels,
                                (PtrCtrlProcPtr)NoopDDA,
                                GetMotionHistorySize(), NAXES,
                                axes_labels);
        InitValuatorAxisStruct(pPointer, 0, axes_labels[0],
                               NO_AXIS_LIMITS, NO_AXIS_LIMITS,
                               0, 0, 0, Absolute);
        InitValuatorAxisStruct(pPointer, 1, axes_labels[1],
                               NO_AXIS_LIMITS, NO_AXIS_LIMITS,
                               0, 0, 0, Absolute);
        InitValuatorAxisStruct(pPointer, 2, axes_labels[2],
                               NO_AXIS_LIMITS, NO_AXIS_LIMITS,
                               1, 0, 1, Relative);
        InitValuatorAxisStruct(pPointer, 3, axes_labels[3],
                               NO_AXIS_LIMITS, NO_AXIS_LIMITS,
                               1, 0, 1, Relative);
        InitValuatorAxisStruct(pPointer, 4, axes_labels[4],
                               NO_AXIS_LIMITS, NO_AXIS_LIMITS,
                               1, 0, 1, Relative);
        InitValuatorAxisStruct(pPointer, 5, axes_labels[5],
                               NO_AXIS_LIMITS, NO_AXIS_LIMITS,
                               1, 0, 1, Relative);

        SetScrollValuator(pPointer, 4, SCROLL_TYPE_VERTICAL, -1.0, SCROLL_FLAG_PREFERRED);
        SetScrollValuator(pPointer, 5, SCROLL_TYPE_HORIZONTAL, -1.0, SCROLL_FLAG_NONE);
        break;

    case DEVICE_ON:
        pPointer->public.on = TRUE;
        SetNotifyFd(darwinEventReadFD, DarwinInputHandlerNotify, X_NOTIFY_READ, NULL);
        return Success;

    case DEVICE_CLOSE:
    case DEVICE_OFF:
        pPointer->public.on = FALSE;
        RemoveNotifyFd(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;
        SetNotifyFd(darwinEventReadFD, DarwinInputHandlerNotify, X_NOTIFY_READ, NULL);
        return Success;

    case DEVICE_CLOSE:
    case DEVICE_OFF:
        pPointer->public.on = FALSE;
        RemoveNotifyFd(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;
        SetNotifyFd(darwinEventReadFD, DarwinInputHandlerNotify, X_NOTIFY_READ, NULL);
        break;

    case DEVICE_OFF:
        pDev->public.on = FALSE;
        RemoveNotifyFd(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);

    assert(Success == AllocDevicePair(serverClient, "xquartz virtual",
                                      &darwinPointer, &darwinKeyboard,
                                      DarwinMouseProc, DarwinKeybdProc, FALSE));

    /* 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;
     */

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

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

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

    DarwinEQInit();

    QuartzInitInput(argc, argv);
}

void
CloseInput(void)
{
    DarwinEQFini();
}

/*
 * 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);
        }
    }

    /* Update screenInfo.x/y */
    update_desktop_dimensions();
}

/*
 * 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 = ARRAY_SIZE(formats);
    for (i = 0; i < ARRAY_SIZE(formats); 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);
    }

    xorgGlxCreateVendor();

    DarwinAdjustScreenOrigins(pScreenInfo);
}

/*
 * OsVendorFatalError
 */
void
OsVendorFatalError(const char *f, va_list args)
{
}

/*
 * 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", home));

        /* Ignore errors.  If EEXIST, we don't care.  If anything else,
         * LogInit will handle it for us.
         */
        (void)mkdir(lf, S_IRWXU | S_IRWXG | S_IRWXO);
        free(lf);

        assert(0 <
               asprintf(&lf, "%s/Library/Logs/X11/%s.log", home,
                        bundle_id_prefix));
        LogInit(lf, ".old");
        free(lf);

        DarwinPrintBanner();
    }
}

/*
 * 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(enum ExitCode error)
{
    LogClose(error);
}

#if INPUTTHREAD
/** This function is called in Xserver/os/inputthread.c when starting
    the input thread. */
void
ddxInputThreadInit(void)
{
}
#endif