initial state (xorg-server 1.10.2)

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+/************************************************************
+
+Copyright 1987, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+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
+OPEN GROUP 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 The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in 
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+********************************************************/
+
+
+#ifndef INPUTSTRUCT_H
+#define INPUTSTRUCT_H
+
+#include <pixman.h>
+#include "input.h"
+#include "window.h"
+#include "dixstruct.h"
+#include "cursorstr.h"
+#include "geext.h"
+#include "privates.h"
+
+#define BitIsOn(ptr, bit) (!!(((BYTE *) (ptr))[(bit)>>3] & (1 << ((bit) & 7))))
+#define SetBit(ptr, bit)  (((BYTE *) (ptr))[(bit)>>3] |= (1 << ((bit) & 7)))
+#define ClearBit(ptr, bit) (((BYTE *)(ptr))[(bit)>>3] &= ~(1 << ((bit) & 7)))
+extern _X_EXPORT int CountBits(const uint8_t *mask, int len);
+
+#define SameClient(obj,client) \
+	(CLIENT_BITS((obj)->resource) == (client)->clientAsMask)
+
+#define EMASKSIZE	MAXDEVICES + 2
+
+/* This is the last XI2 event supported by the server. If you add
+ * events to the protocol, the server will not support these events until
+ * this number here is bumped.
+ */
+#define XI2LASTEVENT    17 /* XI_RawMotion */
+#define XI2MASKSIZE     ((XI2LASTEVENT + 7)/8) /* no of bits for masks */
+
+/**
+ * This struct stores the core event mask for each client except the client
+ * that created the window.
+ *
+ * Each window that has events selected from other clients has at least one of
+ * these masks. If multiple clients selected for events on the same window,
+ * these masks are in a linked list.
+ *
+ * The event mask for the client that created the window is stored in
+ * win->eventMask instead.
+ *
+ * The resource id is simply a fake client ID to associate this mask with a
+ * client.
+ *
+ * Kludge: OtherClients and InputClients must be compatible, see code.
+ */
+typedef struct _OtherClients {
+    OtherClientsPtr	next; /**< Pointer to the next mask */
+    XID			resource; /**< id for putting into resource manager */
+    Mask		mask; /**< Core event mask */
+} OtherClients;
+
+/**
+ * This struct stores the XI event mask for each client.
+ *
+ * Each window that has events selected has at least one of these masks. If
+ * multiple client selected for events on the same window, these masks are in
+ * a linked list.
+ */
+typedef struct _InputClients {
+    InputClientsPtr	next; /**< Pointer to the next mask */
+    XID			resource; /**< id for putting into resource manager */
+    Mask		mask[EMASKSIZE]; /**< Actual XI event mask, deviceid is index */
+    /** XI2 event masks. One per device, each bit is a mask of (1 << type) */
+    unsigned char       xi2mask[EMASKSIZE][XI2MASKSIZE];
+} InputClients;
+
+/**
+ * Combined XI event masks from all devices.
+ *
+ * This is the XI equivalent of the deliverableEvents, eventMask and
+ * dontPropagate mask of the WindowRec (or WindowOptRec).
+ *
+ * A window that has an XI client selecting for events has exactly one
+ * OtherInputMasks struct and exactly one InputClients struct hanging off
+ * inputClients. Each further client appends to the inputClients list.
+ * Each Mask field is per-device, with the device id as the index.
+ * Exception: for non-device events (Presence events), the MAXDEVICES
+ * deviceid is used.
+ */
+typedef struct _OtherInputMasks {
+    /**
+     * Bitwise OR of all masks by all clients and the window's parent's masks.
+     */
+    Mask		deliverableEvents[EMASKSIZE];
+    /**
+     * Bitwise OR of all masks by all clients on this window.
+     */
+    Mask		inputEvents[EMASKSIZE];
+    /** The do-not-propagate masks for each device. */
+    Mask		dontPropagateMask[EMASKSIZE];
+    /** The clients that selected for events */
+    InputClientsPtr	inputClients;
+    /* XI2 event masks. One per device, each bit is a mask of (1 << type) */
+    unsigned char       xi2mask[EMASKSIZE][XI2MASKSIZE];
+} OtherInputMasks;
+
+/*
+ * The following structure gets used for both active and passive grabs. For
+ * active grabs some of the fields (e.g. modifiers) are not used. However,
+ * that is not much waste since there aren't many active grabs (one per
+ * keyboard/pointer device) going at once in the server.
+ */
+
+#define MasksPerDetailMask 8		/* 256 keycodes and 256 possible
+                                           modifier combinations, but only	
+                                           3 buttons. */
+
+typedef struct _DetailRec {		/* Grab details may be bit masks */
+    unsigned int        exact;
+    Mask                *pMask;
+} DetailRec;
+
+typedef enum {
+    GRABTYPE_CORE,
+    GRABTYPE_XI,
+    GRABTYPE_XI2
+} GrabType;
+
+union _GrabMask {
+    Mask core;
+    Mask xi;
+    char xi2mask[EMASKSIZE][XI2MASKSIZE];
+};
+
+/**
+ * Central struct for device grabs. 
+ * The same struct is used for both core grabs and device grabs, with
+ * different fields being set. 
+ * If the grab is a core grab (GrabPointer/GrabKeyboard), then the eventMask
+ * is a combination of standard event masks (i.e. PointerMotionMask |
+ * ButtonPressMask).
+ * If the grab is a device grab (GrabDevice), then the eventMask is a
+ * combination of event masks for a given XI event type (see SetEventInfo).
+ *
+ * If the grab is a result of a ButtonPress, then eventMask is the core mask
+ * and deviceMask is set to the XI event mask for the grab.
+ */
+typedef struct _GrabRec {
+    GrabPtr		next;		/* for chain of passive grabs */
+    XID			resource;
+    DeviceIntPtr	device;
+    WindowPtr		window;
+    unsigned		ownerEvents:1;
+    unsigned		keyboardMode:1;
+    unsigned		pointerMode:1;
+    GrabType		grabtype;
+    CARD8		type;		/* event type */
+    DetailRec		modifiersDetail;
+    DeviceIntPtr	modifierDevice;
+    DetailRec		detail;		/* key or button */
+    WindowPtr		confineTo;	/* always NULL for keyboards */
+    CursorPtr		cursor;		/* always NULL for keyboards */
+    Mask		eventMask;
+    Mask                deviceMask;     
+    /* XI2 event masks. One per device, each bit is a mask of (1 << type) */
+    unsigned char       xi2mask[EMASKSIZE][XI2MASKSIZE];
+} GrabRec;
+
+/**
+ * Sprite information for a device.
+ */
+typedef struct _SpriteRec {
+    CursorPtr	current;
+    BoxRec	hotLimits;	/* logical constraints of hot spot */
+    Bool	confined;	/* confined to screen */
+    RegionPtr	hotShape;	/* additional logical shape constraint */
+    BoxRec	physLimits;	/* physical constraints of hot spot */
+    WindowPtr	win;		/* window of logical position */
+    HotSpot	hot;		/* logical pointer position */
+    HotSpot	hotPhys;	/* physical pointer position */
+#ifdef PANORAMIX
+    ScreenPtr	screen;		/* all others are in Screen 0 coordinates */
+    RegionRec   Reg1;	        /* Region 1 for confining motion */
+    RegionRec   Reg2;		/* Region 2 for confining virtual motion */
+    WindowPtr   windows[MAXSCREENS];
+    WindowPtr	confineWin;	/* confine window */
+#endif
+    /* The window trace information is used at dix/events.c to avoid having
+     * to compute all the windows between the root and the current pointer
+     * window each time a button or key goes down. The grabs on each of those
+     * windows must be checked.
+     * spriteTraces should only be used at dix/events.c! */
+    WindowPtr *spriteTrace;
+    int spriteTraceSize;
+    int spriteTraceGood;
+
+    /* Due to delays between event generation and event processing, it is
+     * possible that the pointer has crossed screen boundaries between the
+     * time in which it begins generating events and the time when
+     * those events are processed.
+     *
+     * pEnqueueScreen: screen the pointer was on when the event was generated
+     * pDequeueScreen: screen the pointer was on when the event is processed
+     */
+    ScreenPtr pEnqueueScreen;
+    ScreenPtr pDequeueScreen;
+
+} SpriteRec;
+
+typedef struct _KeyClassRec {
+    int			sourceid;
+    CARD8		down[DOWN_LENGTH];
+    CARD8		postdown[DOWN_LENGTH];
+    int                 modifierKeyCount[8];
+    struct _XkbSrvInfo *xkbInfo;
+} KeyClassRec, *KeyClassPtr;
+
+typedef struct _AxisInfo {
+    int		resolution;
+    int		min_resolution;
+    int		max_resolution;
+    int		min_value;
+    int		max_value;
+    Atom	label;
+    CARD8	mode;
+} AxisInfo, *AxisInfoPtr;
+
+typedef struct _ValuatorAccelerationRec {
+    int                         number;
+    PointerAccelSchemeProc      AccelSchemeProc;
+    void                       *accelData; /* at disposal of AccelScheme */
+    DeviceCallbackProc          AccelCleanupProc;
+} ValuatorAccelerationRec, *ValuatorAccelerationPtr;
+
+typedef struct _ValuatorClassRec {
+    int                   sourceid;
+    int		 	  numMotionEvents;
+    int                   first_motion;
+    int                   last_motion;
+    void                  *motion; /* motion history buffer. Different layout
+                                      for MDs and SDs!*/
+    WindowPtr             motionHintWindow;
+
+    AxisInfoPtr 	  axes;
+    unsigned short	  numAxes;
+    double		  *axisVal; /* always absolute, but device-coord system */
+    ValuatorAccelerationRec	accelScheme;
+} ValuatorClassRec;
+
+typedef struct _ButtonClassRec {
+    int			sourceid;
+    CARD8		numButtons;
+    CARD8		buttonsDown;	/* number of buttons currently down
+                                           This counts logical buttons, not
+					   physical ones, i.e if some buttons
+					   are mapped to 0, they're not counted
+					   here */
+    unsigned short	state;
+    Mask		motionMask;
+    CARD8		down[DOWN_LENGTH];
+    CARD8		postdown[DOWN_LENGTH];
+    CARD8		map[MAP_LENGTH];
+    union _XkbAction    *xkb_acts;
+    Atom		labels[MAX_BUTTONS];
+} ButtonClassRec, *ButtonClassPtr;
+
+typedef struct _FocusClassRec {
+    int		sourceid;
+    WindowPtr	win; /* May be set to a int constant (e.g. PointerRootWin)! */
+    int		revert;
+    TimeStamp	time;
+    WindowPtr	*trace;
+    int		traceSize;
+    int		traceGood;
+} FocusClassRec, *FocusClassPtr;
+
+typedef struct _ProximityClassRec {
+    int		sourceid;
+    char	in_proximity;
+} ProximityClassRec, *ProximityClassPtr;
+
+typedef struct _AbsoluteClassRec {
+    int         sourceid;
+    /* Calibration. */
+    int         min_x;
+    int         max_x;
+    int         min_y;
+    int         max_y;
+    int         flip_x;
+    int         flip_y;
+    int		rotation;
+    int         button_threshold;
+
+    /* Area. */
+    int         offset_x;
+    int         offset_y;
+    int         width;
+    int         height;
+    int         screen;
+    XID		following;
+} AbsoluteClassRec, *AbsoluteClassPtr;
+
+typedef struct _KbdFeedbackClassRec *KbdFeedbackPtr;
+typedef struct _PtrFeedbackClassRec *PtrFeedbackPtr;
+typedef struct _IntegerFeedbackClassRec *IntegerFeedbackPtr;
+typedef struct _StringFeedbackClassRec *StringFeedbackPtr;
+typedef struct _BellFeedbackClassRec *BellFeedbackPtr;
+typedef struct _LedFeedbackClassRec *LedFeedbackPtr;
+
+typedef struct _KbdFeedbackClassRec {
+    BellProcPtr		BellProc;
+    KbdCtrlProcPtr	CtrlProc;
+    KeybdCtrl	 	ctrl;
+    KbdFeedbackPtr	next;
+    struct _XkbSrvLedInfo *xkb_sli;
+} KbdFeedbackClassRec;
+
+typedef struct _PtrFeedbackClassRec {
+    PtrCtrlProcPtr	CtrlProc;
+    PtrCtrl		ctrl;
+    PtrFeedbackPtr	next;
+} PtrFeedbackClassRec;
+
+typedef struct _IntegerFeedbackClassRec {
+    IntegerCtrlProcPtr	CtrlProc;
+    IntegerCtrl	 	ctrl;
+    IntegerFeedbackPtr	next;
+} IntegerFeedbackClassRec;
+
+typedef struct _StringFeedbackClassRec {
+    StringCtrlProcPtr	CtrlProc;
+    StringCtrl	 	ctrl;
+    StringFeedbackPtr	next;
+} StringFeedbackClassRec;
+
+typedef struct _BellFeedbackClassRec {
+    BellProcPtr		BellProc;
+    BellCtrlProcPtr	CtrlProc;
+    BellCtrl	 	ctrl;
+    BellFeedbackPtr	next;
+} BellFeedbackClassRec;
+
+typedef struct _LedFeedbackClassRec {
+    LedCtrlProcPtr	CtrlProc;
+    LedCtrl	 	ctrl;
+    LedFeedbackPtr	next;
+    struct _XkbSrvLedInfo *xkb_sli;
+} LedFeedbackClassRec;
+
+
+typedef struct _ClassesRec {
+    KeyClassPtr		key;
+    ValuatorClassPtr	valuator;
+    ButtonClassPtr	button;
+    FocusClassPtr	focus;
+    ProximityClassPtr	proximity;
+    AbsoluteClassPtr    absolute;
+    KbdFeedbackPtr	kbdfeed;
+    PtrFeedbackPtr	ptrfeed;
+    IntegerFeedbackPtr	intfeed;
+    StringFeedbackPtr	stringfeed;
+    BellFeedbackPtr	bell;
+    LedFeedbackPtr	leds;
+} ClassesRec;
+
+
+/* Device properties */
+typedef struct _XIPropertyValue
+{
+    Atom                type;           /* ignored by server */
+    short               format;         /* format of data for swapping - 8,16,32 */
+    long                size;           /* size of data in (format/8) bytes */
+    pointer             data;           /* private to client */
+} XIPropertyValueRec;
+
+typedef struct _XIProperty
+{
+    struct _XIProperty   *next;
+    Atom                  propertyName;
+    BOOL                  deletable;    /* clients can delete this prop? */
+    XIPropertyValueRec    value;
+} XIPropertyRec;
+
+typedef XIPropertyRec      *XIPropertyPtr;
+typedef XIPropertyValueRec *XIPropertyValuePtr;
+
+
+typedef struct _XIPropertyHandler
+{
+    struct _XIPropertyHandler* next;
+    long id;
+    int (*SetProperty) (DeviceIntPtr dev,
+                        Atom property,
+                        XIPropertyValuePtr prop,
+                        BOOL checkonly);
+    int (*GetProperty) (DeviceIntPtr dev,
+                        Atom property);
+    int (*DeleteProperty) (DeviceIntPtr dev,
+                           Atom property);
+} XIPropertyHandler, *XIPropertyHandlerPtr;
+
+/* states for devices */
+
+#define NOT_GRABBED		0
+#define THAWED			1
+#define THAWED_BOTH		2	/* not a real state */
+#define FREEZE_NEXT_EVENT	3
+#define FREEZE_BOTH_NEXT_EVENT	4
+#define FROZEN			5	/* any state >= has device frozen */
+#define FROZEN_NO_EVENT		5
+#define FROZEN_WITH_EVENT	6
+#define THAW_OTHERS		7
+
+
+typedef struct _GrabInfoRec {
+    TimeStamp	    grabTime;
+    Bool            fromPassiveGrab;    /* true if from passive grab */
+    Bool            implicitGrab;       /* implicit from ButtonPress */
+    GrabRec         activeGrab;
+    GrabPtr         grab;
+    CARD8           activatingKey;
+    void	    (*ActivateGrab) (
+                    DeviceIntPtr /*device*/,
+                    GrabPtr /*grab*/,
+                    TimeStamp /*time*/,
+                    Bool /*autoGrab*/);
+    void	    (*DeactivateGrab)(
+                    DeviceIntPtr /*device*/);
+    struct {
+	Bool		frozen;
+	int		state;
+	GrabPtr		other;		/* if other grab has this frozen */
+	DeviceEvent	*event;		/* saved to be replayed */
+    } sync;
+} GrabInfoRec, *GrabInfoPtr;
+
+typedef struct _SpriteInfoRec {
+    /* sprite must always point to a valid sprite. For devices sharing the
+     * sprite, let sprite point to a paired spriteOwner's sprite. */
+    SpritePtr           sprite;      /* sprite information */
+    Bool                spriteOwner; /* True if device owns the sprite */
+    DeviceIntPtr        paired;      /* The paired device. Keyboard if
+                                        spriteOwner is TRUE, otherwise the
+                                        pointer that owns the sprite. */ 
+
+    /* keep states for animated cursor */
+    struct {
+        CursorPtr       pCursor;
+        ScreenPtr       pScreen;
+        int             elt;
+        CARD32          time;
+    } anim;
+} SpriteInfoRec, *SpriteInfoPtr;
+
+/* device types */
+#define MASTER_POINTER          1
+#define MASTER_KEYBOARD         2
+#define SLAVE                   3
+
+typedef struct _DeviceIntRec {
+    DeviceRec	public;
+    DeviceIntPtr next;
+    Bool	startup;		/* true if needs to be turned on at
+				          server intialization time */
+    DeviceProc	deviceProc;		/* proc(DevicePtr, DEVICE_xx). It is
+					  used to initialize, turn on, or
+					  turn off the device */
+    Bool	inited;			/* TRUE if INIT returns Success */
+    Bool        enabled;                /* TRUE if ON returns Success */
+    Bool        coreEvents;             /* TRUE if device also sends core */
+    GrabInfoRec deviceGrab;             /* grab on the device */
+    int         type;                   /* MASTER_POINTER, MASTER_KEYBOARD, SLAVE */
+    Atom		xinput_type;
+    char		*name;
+    int			id;
+    KeyClassPtr		key;
+    ValuatorClassPtr	valuator;
+    ButtonClassPtr	button;
+    FocusClassPtr	focus;
+    ProximityClassPtr	proximity;
+    AbsoluteClassPtr    absolute;
+    KbdFeedbackPtr	kbdfeed;
+    PtrFeedbackPtr	ptrfeed;
+    IntegerFeedbackPtr	intfeed;
+    StringFeedbackPtr	stringfeed;
+    BellFeedbackPtr	bell;
+    LedFeedbackPtr	leds;
+    struct _XkbInterest *xkb_interest;
+    char                *config_info; /* used by the hotplug layer */
+    ClassesPtr		unused_classes; /* for master devices */
+    int			saved_master_id;	/* for slaves while grabbed */
+    PrivateRec		*devPrivates;
+    DeviceUnwrapProc    unwrapProc;
+    SpriteInfoPtr       spriteInfo;
+    union {
+        DeviceIntPtr        master;     /* master device */
+        DeviceIntPtr        lastSlave;  /* last slave device used */
+    } u;
+
+    /* last valuator values recorded, not posted to client;
+     * for slave devices, valuators is in device coordinates
+     * for master devices, valuators is in screen coordinates
+     * see dix/getevents.c
+     * remainder supports acceleration
+     */
+    struct {
+        int             valuators[MAX_VALUATORS];
+        float           remainder[MAX_VALUATORS];
+        int             numValuators;
+        DeviceIntPtr    slave;
+    } last;
+
+    /* Input device property handling. */
+    struct {
+        XIPropertyPtr   properties;
+        XIPropertyHandlerPtr handlers; /* NULL-terminated */
+    } properties;
+
+    /* coordinate transformation matrix for absolute input devices */
+    struct pixman_f_transform transform;
+
+    /* XTest related master device id */
+    int xtest_master_id;
+} DeviceIntRec;
+
+typedef struct {
+    int			numDevices;	/* total number of devices */
+    DeviceIntPtr	devices;	/* all devices turned on */
+    DeviceIntPtr	off_devices;	/* all devices turned off */
+    DeviceIntPtr	keyboard;	/* the main one for the server */
+    DeviceIntPtr	pointer;
+    DeviceIntPtr	all_devices;
+    DeviceIntPtr	all_master_devices;
+} InputInfo;
+
+extern _X_EXPORT InputInfo inputInfo;
+
+/* for keeping the events for devices grabbed synchronously */
+typedef struct _QdEvent *QdEventPtr;
+typedef struct _QdEvent {
+    QdEventPtr		next;
+    DeviceIntPtr	device;
+    ScreenPtr		pScreen;	/* what screen the pointer was on */
+    unsigned long	months;		/* milliseconds is in the event */
+    InternalEvent	*event;
+} QdEventRec;
+
+/**
+ * syncEvents is the global structure for queued events.
+ *
+ * Devices can be frozen through GrabModeSync pointer grabs. If this is the
+ * case, events from these devices are added to "pending" instead of being
+ * processed normally. When the device is unfrozen, events in "pending" are
+ * replayed and processed as if they would come from the device directly.
+ */
+typedef struct _EventSyncInfo {
+    QdEventPtr          pending, /**<  list of queued events */
+                        *pendtail; /**< last event in list */
+    /** The device to replay events for. Only set in AllowEvents(), in which
+     * case it is set to the device specified in the request. */
+    DeviceIntPtr        replayDev;      /* kludgy rock to put flag for */
+
+    /**
+     * The window the events are supposed to be replayed on.
+     * This window may be set to the grab's window (but only when
+     * Replay{Pointer|Keyboard} is given in the XAllowEvents()
+     * request. */
+    WindowPtr           replayWin;      /*   ComputeFreezes            */
+    /**
+     * Flag to indicate whether we're in the process of
+     * replaying events. Only set in ComputeFreezes(). */
+    Bool                playingEvents;
+    TimeStamp           time;
+} EventSyncInfoRec, *EventSyncInfoPtr;
+
+extern EventSyncInfoRec syncEvents;
+
+#endif /* INPUTSTRUCT_H */