diff options
Diffstat (limited to 'xorg-server/xfixes/cursor.c')
| -rw-r--r-- | xorg-server/xfixes/cursor.c | 2531 |
1 files changed, 1464 insertions, 1067 deletions
diff --git a/xorg-server/xfixes/cursor.c b/xorg-server/xfixes/cursor.c index a039d581d..4eaae2784 100644 --- a/xorg-server/xfixes/cursor.c +++ b/xorg-server/xfixes/cursor.c @@ -1,1067 +1,1464 @@ -/*
- * Copyright (c) 2006, Oracle and/or its affiliates. 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 (including the next
- * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
- *
- * Copyright © 2002 Keith Packard
- *
- * 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, and that the name of Keith Packard not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD 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.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#else
-#define XFIXES
-#endif
-
-#include "xfixesint.h"
-#include "scrnintstr.h"
-#include "cursorstr.h"
-#include "dixevents.h"
-#include "servermd.h"
-#include "inputstr.h"
-#include "windowstr.h"
-#include "xace.h"
-
-static RESTYPE CursorClientType;
-static RESTYPE CursorHideCountType;
-static RESTYPE CursorWindowType;
-static CursorPtr CursorCurrent[MAXDEVICES];
-
-static DevPrivateKeyRec CursorScreenPrivateKeyRec;
-#define CursorScreenPrivateKey (&CursorScreenPrivateKeyRec)
-
-static void deleteCursorHideCountsForScreen (ScreenPtr pScreen);
-
-#define VERIFY_CURSOR(pCursor, cursor, client, access) \
- do { \
- int err; \
- err = dixLookupResourceByType((pointer *) &pCursor, cursor, \
- RT_CURSOR, client, access); \
- if (err != Success) { \
- client->errorValue = cursor; \
- return err; \
- } \
- } while (0)
-
-/*
- * There is a global list of windows selecting for cursor events
- */
-
-typedef struct _CursorEvent *CursorEventPtr;
-
-typedef struct _CursorEvent {
- CursorEventPtr next;
- CARD32 eventMask;
- ClientPtr pClient;
- WindowPtr pWindow;
- XID clientResource;
-} CursorEventRec;
-
-static CursorEventPtr cursorEvents;
-
-/*
- * Each screen has a list of clients which have requested
- * that the cursor be hid, and the number of times each
- * client has requested.
-*/
-
-typedef struct _CursorHideCountRec *CursorHideCountPtr;
-
-typedef struct _CursorHideCountRec {
- CursorHideCountPtr pNext;
- ClientPtr pClient;
- ScreenPtr pScreen;
- int hideCount;
- XID resource;
-} CursorHideCountRec;
-
-/*
- * Wrap DisplayCursor to catch cursor change events
- */
-
-typedef struct _CursorScreen {
- DisplayCursorProcPtr DisplayCursor;
- CloseScreenProcPtr CloseScreen;
- CursorHideCountPtr pCursorHideCounts;
-} CursorScreenRec, *CursorScreenPtr;
-
-#define GetCursorScreen(s) ((CursorScreenPtr)dixLookupPrivate(&(s)->devPrivates, CursorScreenPrivateKey))
-#define GetCursorScreenIfSet(s) GetCursorScreen(s)
-#define SetCursorScreen(s,p) dixSetPrivate(&(s)->devPrivates, CursorScreenPrivateKey, p)
-#define Wrap(as,s,elt,func) (((as)->elt = (s)->elt), (s)->elt = func)
-#define Unwrap(as,s,elt,backup) (((backup) = (s)->elt), (s)->elt = (as)->elt)
-
-/* The cursor doesn't show up until the first XDefineCursor() */
-static Bool CursorVisible = FALSE;
-
-Bool EnableCursor = TRUE;
-
-static Bool
-CursorDisplayCursor (DeviceIntPtr pDev,
- ScreenPtr pScreen,
- CursorPtr pCursor)
-{
- CursorScreenPtr cs = GetCursorScreen(pScreen);
- Bool ret;
- DisplayCursorProcPtr backupProc;
-
- Unwrap (cs, pScreen, DisplayCursor, backupProc);
-
- /*
- * Have to check ConnectionInfo to distinguish client requests from
- * initial root window setup. Not a great way to do it, I admit.
- */
- if (ConnectionInfo)
- CursorVisible = EnableCursor;
-
- if (cs->pCursorHideCounts != NULL || !CursorVisible) {
- ret = (*pScreen->DisplayCursor) (pDev, pScreen, NullCursor);
- } else {
- ret = (*pScreen->DisplayCursor) (pDev, pScreen, pCursor);
- }
-
- if (pCursor != CursorCurrent[pDev->id])
- {
- CursorEventPtr e;
-
- CursorCurrent[pDev->id] = pCursor;
- for (e = cursorEvents; e; e = e->next)
- {
- if ((e->eventMask & XFixesDisplayCursorNotifyMask))
- {
- xXFixesCursorNotifyEvent ev;
- ev.type = XFixesEventBase + XFixesCursorNotify;
- ev.subtype = XFixesDisplayCursorNotify;
- ev.window = e->pWindow->drawable.id;
- ev.cursorSerial = pCursor->serialNumber;
- ev.timestamp = currentTime.milliseconds;
- ev.name = pCursor->name;
- WriteEventsToClient (e->pClient, 1, (xEvent *) &ev);
- }
- }
- }
- Wrap (cs, pScreen, DisplayCursor, backupProc);
-
- return ret;
-}
-
-static Bool
-CursorCloseScreen (int index, ScreenPtr pScreen)
-{
- CursorScreenPtr cs = GetCursorScreen (pScreen);
- Bool ret;
- CloseScreenProcPtr close_proc;
- DisplayCursorProcPtr display_proc;
-
- Unwrap (cs, pScreen, CloseScreen, close_proc);
- Unwrap (cs, pScreen, DisplayCursor, display_proc);
- deleteCursorHideCountsForScreen(pScreen);
- ret = (*pScreen->CloseScreen) (index, pScreen);
- free(cs);
- return ret;
-}
-
-#define CursorAllEvents (XFixesDisplayCursorNotifyMask)
-
-static int
-XFixesSelectCursorInput (ClientPtr pClient,
- WindowPtr pWindow,
- CARD32 eventMask)
-{
- CursorEventPtr *prev, e;
- pointer val;
- int rc;
-
- for (prev = &cursorEvents; (e = *prev); prev = &e->next)
- {
- if (e->pClient == pClient &&
- e->pWindow == pWindow)
- {
- break;
- }
- }
- if (!eventMask)
- {
- if (e)
- {
- FreeResource (e->clientResource, 0);
- }
- return Success;
- }
- if (!e)
- {
- e = (CursorEventPtr) malloc(sizeof (CursorEventRec));
- if (!e)
- return BadAlloc;
-
- e->next = 0;
- e->pClient = pClient;
- e->pWindow = pWindow;
- e->clientResource = FakeClientID(pClient->index);
-
- /*
- * Add a resource hanging from the window to
- * catch window destroy
- */
- rc = dixLookupResourceByType( &val, pWindow->drawable.id,
- CursorWindowType, serverClient,
- DixGetAttrAccess);
- if (rc != Success)
- if (!AddResource (pWindow->drawable.id, CursorWindowType,
- (pointer) pWindow))
- {
- free(e);
- return BadAlloc;
- }
-
- if (!AddResource (e->clientResource, CursorClientType, (pointer) e))
- return BadAlloc;
-
- *prev = e;
- }
- e->eventMask = eventMask;
- return Success;
-}
-
-int
-ProcXFixesSelectCursorInput (ClientPtr client)
-{
- REQUEST (xXFixesSelectCursorInputReq);
- WindowPtr pWin;
- int rc;
-
- REQUEST_SIZE_MATCH (xXFixesSelectCursorInputReq);
- rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
- if (rc != Success)
- return rc;
- if (stuff->eventMask & ~CursorAllEvents)
- {
- client->errorValue = stuff->eventMask;
- return BadValue;
- }
- return XFixesSelectCursorInput (client, pWin, stuff->eventMask);
-}
-
-static int
-GetBit (unsigned char *line, int x)
-{
- unsigned char mask;
-
- if (screenInfo.bitmapBitOrder == LSBFirst)
- mask = (1 << (x & 7));
- else
- mask = (0x80 >> (x & 7));
- /* XXX assumes byte order is host byte order */
- line += (x >> 3);
- if (*line & mask)
- return 1;
- return 0;
-}
-
-int
-SProcXFixesSelectCursorInput (ClientPtr client)
-{
- register int n;
- REQUEST(xXFixesSelectCursorInputReq);
-
- swaps(&stuff->length, n);
- swapl(&stuff->window, n);
- swapl(&stuff->eventMask, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-void
-SXFixesCursorNotifyEvent (xXFixesCursorNotifyEvent *from,
- xXFixesCursorNotifyEvent *to)
-{
- to->type = from->type;
- cpswaps (from->sequenceNumber, to->sequenceNumber);
- cpswapl (from->window, to->window);
- cpswapl (from->cursorSerial, to->cursorSerial);
- cpswapl (from->timestamp, to->timestamp);
- cpswapl (from->name, to->name);
-}
-
-static void
-CopyCursorToImage (CursorPtr pCursor, CARD32 *image)
-{
- int width = pCursor->bits->width;
- int height = pCursor->bits->height;
- int npixels = width * height;
-
-#ifdef ARGB_CURSOR
- if (pCursor->bits->argb)
- memcpy (image, pCursor->bits->argb, npixels * sizeof (CARD32));
- else
-#endif
- {
- unsigned char *srcLine = pCursor->bits->source;
- unsigned char *mskLine = pCursor->bits->mask;
- int stride = BitmapBytePad (width);
- int x, y;
- CARD32 fg, bg;
-
- fg = (0xff000000 |
- ((pCursor->foreRed & 0xff00) << 8) |
- (pCursor->foreGreen & 0xff00) |
- (pCursor->foreBlue >> 8));
- bg = (0xff000000 |
- ((pCursor->backRed & 0xff00) << 8) |
- (pCursor->backGreen & 0xff00) |
- (pCursor->backBlue >> 8));
- for (y = 0; y < height; y++)
- {
- for (x = 0; x < width; x++)
- {
- if (GetBit (mskLine, x))
- {
- if (GetBit (srcLine, x))
- *image++ = fg;
- else
- *image++ = bg;
- }
- else
- *image++ = 0;
- }
- srcLine += stride;
- mskLine += stride;
- }
- }
-}
-
-int
-ProcXFixesGetCursorImage (ClientPtr client)
-{
-/* REQUEST(xXFixesGetCursorImageReq); */
- xXFixesGetCursorImageReply *rep;
- CursorPtr pCursor;
- CARD32 *image;
- int npixels, width, height, rc, x, y;
-
- REQUEST_SIZE_MATCH(xXFixesGetCursorImageReq);
- pCursor = CursorCurrent[PickPointer(client)->id];
- if (!pCursor)
- return BadCursor;
- rc = XaceHook(XACE_RESOURCE_ACCESS, client, pCursor->id, RT_CURSOR,
- pCursor, RT_NONE, NULL, DixReadAccess);
- if (rc != Success)
- return rc;
- GetSpritePosition (PickPointer(client), &x, &y);
- width = pCursor->bits->width;
- height = pCursor->bits->height;
- npixels = width * height;
- rep = malloc(sizeof (xXFixesGetCursorImageReply) +
- npixels * sizeof (CARD32));
- if (!rep)
- return BadAlloc;
-
- rep->type = X_Reply;
- rep->sequenceNumber = client->sequence;
- rep->length = npixels;
- rep->width = width;
- rep->height = height;
- rep->x = x;
- rep->y = y;
- rep->xhot = pCursor->bits->xhot;
- rep->yhot = pCursor->bits->yhot;
- rep->cursorSerial = pCursor->serialNumber;
-
- image = (CARD32 *) (rep + 1);
- CopyCursorToImage (pCursor, image);
- if (client->swapped)
- {
- int n;
- swaps (&rep->sequenceNumber, n);
- swapl (&rep->length, n);
- swaps (&rep->x, n);
- swaps (&rep->y, n);
- swaps (&rep->width, n);
- swaps (&rep->height, n);
- swaps (&rep->xhot, n);
- swaps (&rep->yhot, n);
- swapl (&rep->cursorSerial, n);
- SwapLongs (image, npixels);
- }
- WriteToClient(client, sizeof (xXFixesGetCursorImageReply) +
- (npixels << 2), (char *) rep);
- free(rep);
- return Success;
-}
-
-int
-SProcXFixesGetCursorImage (ClientPtr client)
-{
- int n;
- REQUEST(xXFixesGetCursorImageReq);
- swaps (&stuff->length, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-int
-ProcXFixesSetCursorName (ClientPtr client)
-{
- CursorPtr pCursor;
- char *tchar;
- REQUEST(xXFixesSetCursorNameReq);
- Atom atom;
-
- REQUEST_AT_LEAST_SIZE(xXFixesSetCursorNameReq);
- VERIFY_CURSOR(pCursor, stuff->cursor, client, DixSetAttrAccess);
- tchar = (char *) &stuff[1];
- atom = MakeAtom (tchar, stuff->nbytes, TRUE);
- if (atom == BAD_RESOURCE)
- return BadAlloc;
-
- pCursor->name = atom;
- return Success;
-}
-
-int
-SProcXFixesSetCursorName (ClientPtr client)
-{
- int n;
- REQUEST(xXFixesSetCursorNameReq);
-
- swaps (&stuff->length, n);
- REQUEST_AT_LEAST_SIZE(xXFixesSetCursorNameReq);
- swapl (&stuff->cursor, n);
- swaps (&stuff->nbytes, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-int
-ProcXFixesGetCursorName (ClientPtr client)
-{
- CursorPtr pCursor;
- xXFixesGetCursorNameReply reply;
- REQUEST(xXFixesGetCursorNameReq);
- const char *str;
- int len;
-
- REQUEST_SIZE_MATCH(xXFixesGetCursorNameReq);
- VERIFY_CURSOR(pCursor, stuff->cursor, client, DixGetAttrAccess);
- if (pCursor->name)
- str = NameForAtom (pCursor->name);
- else
- str = "";
- len = strlen (str);
-
- reply.type = X_Reply;
- reply.length = bytes_to_int32(len);
- reply.sequenceNumber = client->sequence;
- reply.atom = pCursor->name;
- reply.nbytes = len;
- if (client->swapped)
- {
- int n;
- swaps (&reply.sequenceNumber, n);
- swapl (&reply.length, n);
- swapl (&reply.atom, n);
- swaps (&reply.nbytes, n);
- }
- WriteReplyToClient(client, sizeof(xXFixesGetCursorNameReply), &reply);
- WriteToClient(client, len, str);
-
- return Success;
-}
-
-int
-SProcXFixesGetCursorName (ClientPtr client)
-{
- int n;
- REQUEST(xXFixesGetCursorNameReq);
-
- swaps (&stuff->length, n);
- REQUEST_SIZE_MATCH(xXFixesGetCursorNameReq);
- swapl (&stuff->cursor, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-int
-ProcXFixesGetCursorImageAndName (ClientPtr client)
-{
-/* REQUEST(xXFixesGetCursorImageAndNameReq); */
- xXFixesGetCursorImageAndNameReply *rep;
- CursorPtr pCursor;
- CARD32 *image;
- int npixels;
- const char *name;
- int nbytes, nbytesRound;
- int width, height;
- int rc, x, y;
-
- REQUEST_SIZE_MATCH(xXFixesGetCursorImageAndNameReq);
- pCursor = CursorCurrent[PickPointer(client)->id];
- if (!pCursor)
- return BadCursor;
- rc = XaceHook(XACE_RESOURCE_ACCESS, client, pCursor->id, RT_CURSOR,
- pCursor, RT_NONE, NULL, DixReadAccess|DixGetAttrAccess);
- if (rc != Success)
- return rc;
- GetSpritePosition (PickPointer(client), &x, &y);
- width = pCursor->bits->width;
- height = pCursor->bits->height;
- npixels = width * height;
- name = pCursor->name ? NameForAtom (pCursor->name) : "";
- nbytes = strlen (name);
- nbytesRound = pad_to_int32(nbytes);
- rep = malloc(sizeof (xXFixesGetCursorImageAndNameReply) +
- npixels * sizeof (CARD32) + nbytesRound);
- if (!rep)
- return BadAlloc;
-
- rep->type = X_Reply;
- rep->sequenceNumber = client->sequence;
- rep->length = npixels + bytes_to_int32(nbytesRound);
- rep->width = width;
- rep->height = height;
- rep->x = x;
- rep->y = y;
- rep->xhot = pCursor->bits->xhot;
- rep->yhot = pCursor->bits->yhot;
- rep->cursorSerial = pCursor->serialNumber;
- rep->cursorName = pCursor->name;
- rep->nbytes = nbytes;
-
- image = (CARD32 *) (rep + 1);
- CopyCursorToImage (pCursor, image);
- memcpy ((image + npixels), name, nbytes);
- if (client->swapped)
- {
- int n;
- swaps (&rep->sequenceNumber, n);
- swapl (&rep->length, n);
- swaps (&rep->x, n);
- swaps (&rep->y, n);
- swaps (&rep->width, n);
- swaps (&rep->height, n);
- swaps (&rep->xhot, n);
- swaps (&rep->yhot, n);
- swapl (&rep->cursorSerial, n);
- swapl (&rep->cursorName, n);
- swaps (&rep->nbytes, n);
- SwapLongs (image, npixels);
- }
- WriteToClient(client, sizeof (xXFixesGetCursorImageAndNameReply) +
- (npixels << 2) + nbytesRound, (char *) rep);
- free(rep);
- return Success;
-}
-
-int
-SProcXFixesGetCursorImageAndName (ClientPtr client)
-{
- int n;
- REQUEST(xXFixesGetCursorImageAndNameReq);
- swaps (&stuff->length, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-/*
- * Find every cursor reference in the system, ask testCursor
- * whether it should be replaced with a reference to pCursor.
- */
-
-typedef Bool (*TestCursorFunc) (CursorPtr pOld, pointer closure);
-
-typedef struct {
- RESTYPE type;
- TestCursorFunc testCursor;
- CursorPtr pNew;
- pointer closure;
-} ReplaceCursorLookupRec, *ReplaceCursorLookupPtr;
-
-static const RESTYPE CursorRestypes[] = {
- RT_WINDOW, RT_PASSIVEGRAB, RT_CURSOR
-};
-
-#define NUM_CURSOR_RESTYPES (sizeof (CursorRestypes) / sizeof (CursorRestypes[0]))
-
-static Bool
-ReplaceCursorLookup (pointer value, XID id, pointer closure)
-{
- ReplaceCursorLookupPtr rcl = (ReplaceCursorLookupPtr) closure;
- WindowPtr pWin;
- GrabPtr pGrab;
- CursorPtr pCursor = 0, *pCursorRef = 0;
- XID cursor = 0;
-
- switch (rcl->type) {
- case RT_WINDOW:
- pWin = (WindowPtr) value;
- if (pWin->optional)
- {
- pCursorRef = &pWin->optional->cursor;
- pCursor = *pCursorRef;
- }
- break;
- case RT_PASSIVEGRAB:
- pGrab = (GrabPtr) value;
- pCursorRef = &pGrab->cursor;
- pCursor = *pCursorRef;
- break;
- case RT_CURSOR:
- pCursorRef = 0;
- pCursor = (CursorPtr) value;
- cursor = id;
- break;
- }
- if (pCursor && pCursor != rcl->pNew)
- {
- if ((*rcl->testCursor) (pCursor, rcl->closure))
- {
- rcl->pNew->refcnt++;
- /* either redirect reference or update resource database */
- if (pCursorRef)
- *pCursorRef = rcl->pNew;
- else
- ChangeResourceValue (id, RT_CURSOR, rcl->pNew);
- FreeCursor (pCursor, cursor);
- }
- }
- return FALSE; /* keep walking */
-}
-
-static void
-ReplaceCursor (CursorPtr pCursor,
- TestCursorFunc testCursor,
- pointer closure)
-{
- int clientIndex;
- int resIndex;
- ReplaceCursorLookupRec rcl;
-
- /*
- * Cursors exist only in the resource database, windows and grabs.
- * All of these are always pointed at by the resource database. Walk
- * the whole thing looking for cursors
- */
- rcl.testCursor = testCursor;
- rcl.pNew = pCursor;
- rcl.closure = closure;
-
- /* for each client */
- for (clientIndex = 0; clientIndex < currentMaxClients; clientIndex++)
- {
- if (!clients[clientIndex])
- continue;
- for (resIndex = 0; resIndex < NUM_CURSOR_RESTYPES; resIndex++)
- {
- rcl.type = CursorRestypes[resIndex];
- /*
- * This function walks the entire client resource database
- */
- LookupClientResourceComplex (clients[clientIndex],
- rcl.type,
- ReplaceCursorLookup,
- (pointer) &rcl);
- }
- }
- /* this "knows" that WindowHasNewCursor doesn't depend on it's argument */
- WindowHasNewCursor (screenInfo.screens[0]->root);
-}
-
-static Bool
-TestForCursor (CursorPtr pCursor, pointer closure)
-{
- return (pCursor == (CursorPtr) closure);
-}
-
-int
-ProcXFixesChangeCursor (ClientPtr client)
-{
- CursorPtr pSource, pDestination;
- REQUEST(xXFixesChangeCursorReq);
-
- REQUEST_SIZE_MATCH(xXFixesChangeCursorReq);
- VERIFY_CURSOR (pSource, stuff->source, client,
- DixReadAccess|DixGetAttrAccess);
- VERIFY_CURSOR (pDestination, stuff->destination, client,
- DixWriteAccess|DixSetAttrAccess);
-
- ReplaceCursor (pSource, TestForCursor, (pointer) pDestination);
- return Success;
-}
-
-int
-SProcXFixesChangeCursor (ClientPtr client)
-{
- int n;
- REQUEST(xXFixesChangeCursorReq);
-
- swaps (&stuff->length, n);
- REQUEST_SIZE_MATCH(xXFixesChangeCursorReq);
- swapl (&stuff->source, n);
- swapl (&stuff->destination, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-static Bool
-TestForCursorName (CursorPtr pCursor, pointer closure)
-{
- Atom *pName = closure;
- return pCursor->name == *pName;
-}
-
-int
-ProcXFixesChangeCursorByName (ClientPtr client)
-{
- CursorPtr pSource;
- Atom name;
- char *tchar;
- REQUEST(xXFixesChangeCursorByNameReq);
-
- REQUEST_FIXED_SIZE(xXFixesChangeCursorByNameReq, stuff->nbytes);
- VERIFY_CURSOR(pSource, stuff->source, client,
- DixReadAccess|DixGetAttrAccess);
- tchar = (char *) &stuff[1];
- name = MakeAtom (tchar, stuff->nbytes, FALSE);
- if (name)
- ReplaceCursor (pSource, TestForCursorName, &name);
- return Success;
-}
-
-int
-SProcXFixesChangeCursorByName (ClientPtr client)
-{
- int n;
- REQUEST(xXFixesChangeCursorByNameReq);
-
- swaps (&stuff->length, n);
- REQUEST_AT_LEAST_SIZE (xXFixesChangeCursorByNameReq);
- swapl (&stuff->source, n);
- swaps (&stuff->nbytes, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-/*
- * Routines for manipulating the per-screen hide counts list.
- * This list indicates which clients have requested cursor hiding
- * for that screen.
- */
-
-/* Return the screen's hide-counts list element for the given client */
-static CursorHideCountPtr
-findCursorHideCount (ClientPtr pClient, ScreenPtr pScreen)
-{
- CursorScreenPtr cs = GetCursorScreen(pScreen);
- CursorHideCountPtr pChc;
-
- for (pChc = cs->pCursorHideCounts; pChc != NULL; pChc = pChc->pNext) {
- if (pChc->pClient == pClient) {
- return pChc;
- }
- }
-
- return NULL;
-}
-
-static int
-createCursorHideCount (ClientPtr pClient, ScreenPtr pScreen)
-{
- CursorScreenPtr cs = GetCursorScreen(pScreen);
- CursorHideCountPtr pChc;
-
- pChc = (CursorHideCountPtr) malloc(sizeof(CursorHideCountRec));
- if (pChc == NULL) {
- return BadAlloc;
- }
- pChc->pClient = pClient;
- pChc->pScreen = pScreen;
- pChc->hideCount = 1;
- pChc->resource = FakeClientID(pClient->index);
- pChc->pNext = cs->pCursorHideCounts;
- cs->pCursorHideCounts = pChc;
-
- /*
- * Create a resource for this element so it can be deleted
- * when the client goes away.
- */
- if (!AddResource (pChc->resource, CursorHideCountType,
- (pointer) pChc)) {
- free(pChc);
- return BadAlloc;
- }
-
- return Success;
-}
-
-/*
- * Delete the given hide-counts list element from its screen list.
- */
-static void
-deleteCursorHideCount (CursorHideCountPtr pChcToDel, ScreenPtr pScreen)
-{
- CursorScreenPtr cs = GetCursorScreen(pScreen);
- CursorHideCountPtr pChc, pNext;
- CursorHideCountPtr pChcLast = NULL;
-
- pChc = cs->pCursorHideCounts;
- while (pChc != NULL) {
- pNext = pChc->pNext;
- if (pChc == pChcToDel) {
- free(pChc);
- if (pChcLast == NULL) {
- cs->pCursorHideCounts = pNext;
- } else {
- pChcLast->pNext = pNext;
- }
- return;
- }
- pChcLast = pChc;
- pChc = pNext;
- }
-}
-
-/*
- * Delete all the hide-counts list elements for this screen.
- */
-static void
-deleteCursorHideCountsForScreen (ScreenPtr pScreen)
-{
- CursorScreenPtr cs = GetCursorScreen(pScreen);
- CursorHideCountPtr pChc, pTmp;
-
- pChc = cs->pCursorHideCounts;
- while (pChc != NULL) {
- pTmp = pChc->pNext;
- FreeResource(pChc->resource, 0);
- pChc = pTmp;
- }
- cs->pCursorHideCounts = NULL;
-}
-
-int
-ProcXFixesHideCursor (ClientPtr client)
-{
- WindowPtr pWin;
- CursorHideCountPtr pChc;
- REQUEST(xXFixesHideCursorReq);
- int ret;
-
- REQUEST_SIZE_MATCH (xXFixesHideCursorReq);
-
- ret = dixLookupResourceByType((pointer *)&pWin, stuff->window, RT_WINDOW,
- client, DixGetAttrAccess);
- if (ret != Success) {
- client->errorValue = stuff->window;
- return ret;
- }
-
- /*
- * Has client hidden the cursor before on this screen?
- * If so, just increment the count.
- */
-
- pChc = findCursorHideCount(client, pWin->drawable.pScreen);
- if (pChc != NULL) {
- pChc->hideCount++;
- return Success;
- }
-
- /*
- * This is the first time this client has hid the cursor
- * for this screen.
- */
- ret = XaceHook(XACE_SCREEN_ACCESS, client, pWin->drawable.pScreen,
- DixHideAccess);
- if (ret != Success)
- return ret;
-
- ret = createCursorHideCount(client, pWin->drawable.pScreen);
-
- if (ret == Success) {
- DeviceIntPtr dev;
- for (dev = inputInfo.devices; dev; dev = dev->next)
- {
- if (IsMaster(dev) && IsPointerDevice(dev))
- CursorDisplayCursor(dev, pWin->drawable.pScreen, CursorCurrent[dev->id]);
- }
- }
-
- return ret;
-}
-
-int
-SProcXFixesHideCursor (ClientPtr client)
-{
- int n;
- REQUEST(xXFixesHideCursorReq);
-
- swaps (&stuff->length, n);
- REQUEST_SIZE_MATCH (xXFixesHideCursorReq);
- swapl (&stuff->window, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-int
-ProcXFixesShowCursor (ClientPtr client)
-{
- WindowPtr pWin;
- CursorHideCountPtr pChc;
- int rc;
- REQUEST(xXFixesShowCursorReq);
-
- REQUEST_SIZE_MATCH (xXFixesShowCursorReq);
-
- rc = dixLookupResourceByType((pointer *)&pWin, stuff->window, RT_WINDOW,
- client, DixGetAttrAccess);
- if (rc != Success) {
- client->errorValue = stuff->window;
- return rc;
- }
-
- /*
- * Has client hidden the cursor on this screen?
- * If not, generate an error.
- */
- pChc = findCursorHideCount(client, pWin->drawable.pScreen);
- if (pChc == NULL) {
- return BadMatch;
- }
-
- rc = XaceHook(XACE_SCREEN_ACCESS, client, pWin->drawable.pScreen,
- DixShowAccess);
- if (rc != Success)
- return rc;
-
- pChc->hideCount--;
- if (pChc->hideCount <= 0) {
- FreeResource(pChc->resource, 0);
- }
-
- return Success;
-}
-
-int
-SProcXFixesShowCursor (ClientPtr client)
-{
- int n;
- REQUEST(xXFixesShowCursorReq);
-
- swaps (&stuff->length, n);
- REQUEST_SIZE_MATCH (xXFixesShowCursorReq);
- swapl (&stuff->window, n);
- return (*ProcXFixesVector[stuff->xfixesReqType]) (client);
-}
-
-static int
-CursorFreeClient (pointer data, XID id)
-{
- CursorEventPtr old = (CursorEventPtr) data;
- CursorEventPtr *prev, e;
-
- for (prev = &cursorEvents; (e = *prev); prev = &e->next)
- {
- if (e == old)
- {
- *prev = e->next;
- free(e);
- break;
- }
- }
- return 1;
-}
-
-static int
-CursorFreeHideCount (pointer data, XID id)
-{
- CursorHideCountPtr pChc = (CursorHideCountPtr) data;
- ScreenPtr pScreen = pChc->pScreen;
- DeviceIntPtr dev;
-
- deleteCursorHideCount(pChc, pChc->pScreen);
- for (dev = inputInfo.devices; dev; dev = dev->next)
- {
- if (IsMaster(dev) && IsPointerDevice(dev))
- CursorDisplayCursor(dev, pScreen, CursorCurrent[dev->id]);
- }
-
- return 1;
-}
-
-static int
-CursorFreeWindow (pointer data, XID id)
-{
- WindowPtr pWindow = (WindowPtr) data;
- CursorEventPtr e, next;
-
- for (e = cursorEvents; e; e = next)
- {
- next = e->next;
- if (e->pWindow == pWindow)
- {
- FreeResource (e->clientResource, 0);
- }
- }
- return 1;
-}
-
-Bool
-XFixesCursorInit (void)
-{
- int i;
-
- if (party_like_its_1989)
- CursorVisible = EnableCursor;
-
- if (!dixRegisterPrivateKey(&CursorScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
- return FALSE;
-
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- ScreenPtr pScreen = screenInfo.screens[i];
- CursorScreenPtr cs;
-
- cs = (CursorScreenPtr) calloc(1, sizeof (CursorScreenRec));
- if (!cs)
- return FALSE;
- Wrap (cs, pScreen, CloseScreen, CursorCloseScreen);
- Wrap (cs, pScreen, DisplayCursor, CursorDisplayCursor);
- cs->pCursorHideCounts = NULL;
- SetCursorScreen (pScreen, cs);
- }
- CursorClientType = CreateNewResourceType(CursorFreeClient,
- "XFixesCursorClient");
- CursorHideCountType = CreateNewResourceType(CursorFreeHideCount,
- "XFixesCursorHideCount");
- CursorWindowType = CreateNewResourceType(CursorFreeWindow,
- "XFixesCursorWindow");
-
- return CursorClientType && CursorHideCountType && CursorWindowType;
-}
-
+/* + * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. + * Copyright 2010 Red Hat, Inc. + * + * 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 (including the next + * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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. + * + * Copyright © 2002 Keith Packard + * + * 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, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD 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. + */ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#else +#define XFIXES +#endif + +#include "xfixesint.h" +#include "scrnintstr.h" +#include "cursorstr.h" +#include "dixevents.h" +#include "servermd.h" +#include "mipointer.h" +#include "inputstr.h" +#include "windowstr.h" +#include "xace.h" +#include "list.h" + +static RESTYPE CursorClientType; +static RESTYPE CursorHideCountType; +static RESTYPE CursorWindowType; +RESTYPE PointerBarrierType; +static CursorPtr CursorCurrent[MAXDEVICES]; + +static DevPrivateKeyRec CursorScreenPrivateKeyRec; +#define CursorScreenPrivateKey (&CursorScreenPrivateKeyRec) + +static void deleteCursorHideCountsForScreen (ScreenPtr pScreen); + +#define VERIFY_CURSOR(pCursor, cursor, client, access) \ + do { \ + int err; \ + err = dixLookupResourceByType((pointer *) &pCursor, cursor, \ + RT_CURSOR, client, access); \ + if (err != Success) { \ + client->errorValue = cursor; \ + return err; \ + } \ + } while (0) + +/* + * There is a global list of windows selecting for cursor events + */ + +typedef struct _CursorEvent *CursorEventPtr; + +typedef struct _CursorEvent { + CursorEventPtr next; + CARD32 eventMask; + ClientPtr pClient; + WindowPtr pWindow; + XID clientResource; +} CursorEventRec; + +static CursorEventPtr cursorEvents; + +/* + * Each screen has a list of clients which have requested + * that the cursor be hid, and the number of times each + * client has requested. +*/ + +typedef struct _CursorHideCountRec *CursorHideCountPtr; + +typedef struct _CursorHideCountRec { + CursorHideCountPtr pNext; + ClientPtr pClient; + ScreenPtr pScreen; + int hideCount; + XID resource; +} CursorHideCountRec; + +typedef struct PointerBarrierClient *PointerBarrierClientPtr; + +struct PointerBarrierClient { + ScreenPtr screen; + struct PointerBarrier barrier; + struct list entry; +}; + +/* + * Wrap DisplayCursor to catch cursor change events + */ + +typedef struct _CursorScreen { + DisplayCursorProcPtr DisplayCursor; + CloseScreenProcPtr CloseScreen; + ConstrainCursorHarderProcPtr ConstrainCursorHarder; + CursorHideCountPtr pCursorHideCounts; + struct list barriers; +} CursorScreenRec, *CursorScreenPtr; + +#define GetCursorScreen(s) ((CursorScreenPtr)dixLookupPrivate(&(s)->devPrivates, CursorScreenPrivateKey)) +#define GetCursorScreenIfSet(s) GetCursorScreen(s) +#define SetCursorScreen(s,p) dixSetPrivate(&(s)->devPrivates, CursorScreenPrivateKey, p) +#define Wrap(as,s,elt,func) (((as)->elt = (s)->elt), (s)->elt = func) +#define Unwrap(as,s,elt,backup) (((backup) = (s)->elt), (s)->elt = (as)->elt) + +/* The cursor doesn't show up until the first XDefineCursor() */ +static Bool CursorVisible = FALSE; + +Bool EnableCursor = TRUE; + +static Bool +CursorDisplayCursor (DeviceIntPtr pDev, + ScreenPtr pScreen, + CursorPtr pCursor) +{ + CursorScreenPtr cs = GetCursorScreen(pScreen); + Bool ret; + DisplayCursorProcPtr backupProc; + + Unwrap (cs, pScreen, DisplayCursor, backupProc); + + /* + * Have to check ConnectionInfo to distinguish client requests from + * initial root window setup. Not a great way to do it, I admit. + */ + if (ConnectionInfo) + CursorVisible = EnableCursor; + + if (cs->pCursorHideCounts != NULL || !CursorVisible) { + ret = (*pScreen->DisplayCursor) (pDev, pScreen, NullCursor); + } else { + ret = (*pScreen->DisplayCursor) (pDev, pScreen, pCursor); + } + + if (pCursor != CursorCurrent[pDev->id]) + { + CursorEventPtr e; + + CursorCurrent[pDev->id] = pCursor; + for (e = cursorEvents; e; e = e->next) + { + if ((e->eventMask & XFixesDisplayCursorNotifyMask)) + { + xXFixesCursorNotifyEvent ev; + ev.type = XFixesEventBase + XFixesCursorNotify; + ev.subtype = XFixesDisplayCursorNotify; + ev.window = e->pWindow->drawable.id; + ev.cursorSerial = pCursor->serialNumber; + ev.timestamp = currentTime.milliseconds; + ev.name = pCursor->name; + WriteEventsToClient (e->pClient, 1, (xEvent *) &ev); + } + } + } + Wrap (cs, pScreen, DisplayCursor, backupProc); + + return ret; +} + +static Bool +CursorCloseScreen (int index, ScreenPtr pScreen) +{ + CursorScreenPtr cs = GetCursorScreen (pScreen); + Bool ret; + CloseScreenProcPtr close_proc; + DisplayCursorProcPtr display_proc; + ConstrainCursorHarderProcPtr constrain_proc; + + Unwrap (cs, pScreen, CloseScreen, close_proc); + Unwrap (cs, pScreen, DisplayCursor, display_proc); + Unwrap (cs, pScreen, ConstrainCursorHarder, constrain_proc); + deleteCursorHideCountsForScreen(pScreen); + ret = (*pScreen->CloseScreen) (index, pScreen); + free(cs); + return ret; +} + +#define CursorAllEvents (XFixesDisplayCursorNotifyMask) + +static int +XFixesSelectCursorInput (ClientPtr pClient, + WindowPtr pWindow, + CARD32 eventMask) +{ + CursorEventPtr *prev, e; + pointer val; + int rc; + + for (prev = &cursorEvents; (e = *prev); prev = &e->next) + { + if (e->pClient == pClient && + e->pWindow == pWindow) + { + break; + } + } + if (!eventMask) + { + if (e) + { + FreeResource (e->clientResource, 0); + } + return Success; + } + if (!e) + { + e = (CursorEventPtr) malloc(sizeof (CursorEventRec)); + if (!e) + return BadAlloc; + + e->next = 0; + e->pClient = pClient; + e->pWindow = pWindow; + e->clientResource = FakeClientID(pClient->index); + + /* + * Add a resource hanging from the window to + * catch window destroy + */ + rc = dixLookupResourceByType( &val, pWindow->drawable.id, + CursorWindowType, serverClient, + DixGetAttrAccess); + if (rc != Success) + if (!AddResource (pWindow->drawable.id, CursorWindowType, + (pointer) pWindow)) + { + free(e); + return BadAlloc; + } + + if (!AddResource (e->clientResource, CursorClientType, (pointer) e)) + return BadAlloc; + + *prev = e; + } + e->eventMask = eventMask; + return Success; +} + +int +ProcXFixesSelectCursorInput (ClientPtr client) +{ + REQUEST (xXFixesSelectCursorInputReq); + WindowPtr pWin; + int rc; + + REQUEST_SIZE_MATCH (xXFixesSelectCursorInputReq); + rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess); + if (rc != Success) + return rc; + if (stuff->eventMask & ~CursorAllEvents) + { + client->errorValue = stuff->eventMask; + return BadValue; + } + return XFixesSelectCursorInput (client, pWin, stuff->eventMask); +} + +static int +GetBit (unsigned char *line, int x) +{ + unsigned char mask; + + if (screenInfo.bitmapBitOrder == LSBFirst) + mask = (1 << (x & 7)); + else + mask = (0x80 >> (x & 7)); + /* XXX assumes byte order is host byte order */ + line += (x >> 3); + if (*line & mask) + return 1; + return 0; +} + +int +SProcXFixesSelectCursorInput (ClientPtr client) +{ + register int n; + REQUEST(xXFixesSelectCursorInputReq); + + swaps(&stuff->length, n); + swapl(&stuff->window, n); + swapl(&stuff->eventMask, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +void +SXFixesCursorNotifyEvent (xXFixesCursorNotifyEvent *from, + xXFixesCursorNotifyEvent *to) +{ + to->type = from->type; + cpswaps (from->sequenceNumber, to->sequenceNumber); + cpswapl (from->window, to->window); + cpswapl (from->cursorSerial, to->cursorSerial); + cpswapl (from->timestamp, to->timestamp); + cpswapl (from->name, to->name); +} + +static void +CopyCursorToImage (CursorPtr pCursor, CARD32 *image) +{ + int width = pCursor->bits->width; + int height = pCursor->bits->height; + int npixels = width * height; + +#ifdef ARGB_CURSOR + if (pCursor->bits->argb) + memcpy (image, pCursor->bits->argb, npixels * sizeof (CARD32)); + else +#endif + { + unsigned char *srcLine = pCursor->bits->source; + unsigned char *mskLine = pCursor->bits->mask; + int stride = BitmapBytePad (width); + int x, y; + CARD32 fg, bg; + + fg = (0xff000000 | + ((pCursor->foreRed & 0xff00) << 8) | + (pCursor->foreGreen & 0xff00) | + (pCursor->foreBlue >> 8)); + bg = (0xff000000 | + ((pCursor->backRed & 0xff00) << 8) | + (pCursor->backGreen & 0xff00) | + (pCursor->backBlue >> 8)); + for (y = 0; y < height; y++) + { + for (x = 0; x < width; x++) + { + if (GetBit (mskLine, x)) + { + if (GetBit (srcLine, x)) + *image++ = fg; + else + *image++ = bg; + } + else + *image++ = 0; + } + srcLine += stride; + mskLine += stride; + } + } +} + +int +ProcXFixesGetCursorImage (ClientPtr client) +{ +/* REQUEST(xXFixesGetCursorImageReq); */ + xXFixesGetCursorImageReply *rep; + CursorPtr pCursor; + CARD32 *image; + int npixels, width, height, rc, x, y; + + REQUEST_SIZE_MATCH(xXFixesGetCursorImageReq); + pCursor = CursorCurrent[PickPointer(client)->id]; + if (!pCursor) + return BadCursor; + rc = XaceHook(XACE_RESOURCE_ACCESS, client, pCursor->id, RT_CURSOR, + pCursor, RT_NONE, NULL, DixReadAccess); + if (rc != Success) + return rc; + GetSpritePosition (PickPointer(client), &x, &y); + width = pCursor->bits->width; + height = pCursor->bits->height; + npixels = width * height; + rep = malloc(sizeof (xXFixesGetCursorImageReply) + + npixels * sizeof (CARD32)); + if (!rep) + return BadAlloc; + + rep->type = X_Reply; + rep->sequenceNumber = client->sequence; + rep->length = npixels; + rep->width = width; + rep->height = height; + rep->x = x; + rep->y = y; + rep->xhot = pCursor->bits->xhot; + rep->yhot = pCursor->bits->yhot; + rep->cursorSerial = pCursor->serialNumber; + + image = (CARD32 *) (rep + 1); + CopyCursorToImage (pCursor, image); + if (client->swapped) + { + int n; + swaps (&rep->sequenceNumber, n); + swapl (&rep->length, n); + swaps (&rep->x, n); + swaps (&rep->y, n); + swaps (&rep->width, n); + swaps (&rep->height, n); + swaps (&rep->xhot, n); + swaps (&rep->yhot, n); + swapl (&rep->cursorSerial, n); + SwapLongs (image, npixels); + } + WriteToClient(client, sizeof (xXFixesGetCursorImageReply) + + (npixels << 2), (char *) rep); + free(rep); + return Success; +} + +int +SProcXFixesGetCursorImage (ClientPtr client) +{ + int n; + REQUEST(xXFixesGetCursorImageReq); + swaps (&stuff->length, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +int +ProcXFixesSetCursorName (ClientPtr client) +{ + CursorPtr pCursor; + char *tchar; + REQUEST(xXFixesSetCursorNameReq); + Atom atom; + + REQUEST_AT_LEAST_SIZE(xXFixesSetCursorNameReq); + VERIFY_CURSOR(pCursor, stuff->cursor, client, DixSetAttrAccess); + tchar = (char *) &stuff[1]; + atom = MakeAtom (tchar, stuff->nbytes, TRUE); + if (atom == BAD_RESOURCE) + return BadAlloc; + + pCursor->name = atom; + return Success; +} + +int +SProcXFixesSetCursorName (ClientPtr client) +{ + int n; + REQUEST(xXFixesSetCursorNameReq); + + swaps (&stuff->length, n); + REQUEST_AT_LEAST_SIZE(xXFixesSetCursorNameReq); + swapl (&stuff->cursor, n); + swaps (&stuff->nbytes, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +int +ProcXFixesGetCursorName (ClientPtr client) +{ + CursorPtr pCursor; + xXFixesGetCursorNameReply reply; + REQUEST(xXFixesGetCursorNameReq); + const char *str; + int len; + + REQUEST_SIZE_MATCH(xXFixesGetCursorNameReq); + VERIFY_CURSOR(pCursor, stuff->cursor, client, DixGetAttrAccess); + if (pCursor->name) + str = NameForAtom (pCursor->name); + else + str = ""; + len = strlen (str); + + reply.type = X_Reply; + reply.length = bytes_to_int32(len); + reply.sequenceNumber = client->sequence; + reply.atom = pCursor->name; + reply.nbytes = len; + if (client->swapped) + { + int n; + swaps (&reply.sequenceNumber, n); + swapl (&reply.length, n); + swapl (&reply.atom, n); + swaps (&reply.nbytes, n); + } + WriteReplyToClient(client, sizeof(xXFixesGetCursorNameReply), &reply); + WriteToClient(client, len, str); + + return Success; +} + +int +SProcXFixesGetCursorName (ClientPtr client) +{ + int n; + REQUEST(xXFixesGetCursorNameReq); + + swaps (&stuff->length, n); + REQUEST_SIZE_MATCH(xXFixesGetCursorNameReq); + swapl (&stuff->cursor, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +int +ProcXFixesGetCursorImageAndName (ClientPtr client) +{ +/* REQUEST(xXFixesGetCursorImageAndNameReq); */ + xXFixesGetCursorImageAndNameReply *rep; + CursorPtr pCursor; + CARD32 *image; + int npixels; + const char *name; + int nbytes, nbytesRound; + int width, height; + int rc, x, y; + + REQUEST_SIZE_MATCH(xXFixesGetCursorImageAndNameReq); + pCursor = CursorCurrent[PickPointer(client)->id]; + if (!pCursor) + return BadCursor; + rc = XaceHook(XACE_RESOURCE_ACCESS, client, pCursor->id, RT_CURSOR, + pCursor, RT_NONE, NULL, DixReadAccess|DixGetAttrAccess); + if (rc != Success) + return rc; + GetSpritePosition (PickPointer(client), &x, &y); + width = pCursor->bits->width; + height = pCursor->bits->height; + npixels = width * height; + name = pCursor->name ? NameForAtom (pCursor->name) : ""; + nbytes = strlen (name); + nbytesRound = pad_to_int32(nbytes); + rep = malloc(sizeof (xXFixesGetCursorImageAndNameReply) + + npixels * sizeof (CARD32) + nbytesRound); + if (!rep) + return BadAlloc; + + rep->type = X_Reply; + rep->sequenceNumber = client->sequence; + rep->length = npixels + bytes_to_int32(nbytesRound); + rep->width = width; + rep->height = height; + rep->x = x; + rep->y = y; + rep->xhot = pCursor->bits->xhot; + rep->yhot = pCursor->bits->yhot; + rep->cursorSerial = pCursor->serialNumber; + rep->cursorName = pCursor->name; + rep->nbytes = nbytes; + + image = (CARD32 *) (rep + 1); + CopyCursorToImage (pCursor, image); + memcpy ((image + npixels), name, nbytes); + if (client->swapped) + { + int n; + swaps (&rep->sequenceNumber, n); + swapl (&rep->length, n); + swaps (&rep->x, n); + swaps (&rep->y, n); + swaps (&rep->width, n); + swaps (&rep->height, n); + swaps (&rep->xhot, n); + swaps (&rep->yhot, n); + swapl (&rep->cursorSerial, n); + swapl (&rep->cursorName, n); + swaps (&rep->nbytes, n); + SwapLongs (image, npixels); + } + WriteToClient(client, sizeof (xXFixesGetCursorImageAndNameReply) + + (npixels << 2) + nbytesRound, (char *) rep); + free(rep); + return Success; +} + +int +SProcXFixesGetCursorImageAndName (ClientPtr client) +{ + int n; + REQUEST(xXFixesGetCursorImageAndNameReq); + swaps (&stuff->length, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +/* + * Find every cursor reference in the system, ask testCursor + * whether it should be replaced with a reference to pCursor. + */ + +typedef Bool (*TestCursorFunc) (CursorPtr pOld, pointer closure); + +typedef struct { + RESTYPE type; + TestCursorFunc testCursor; + CursorPtr pNew; + pointer closure; +} ReplaceCursorLookupRec, *ReplaceCursorLookupPtr; + +static const RESTYPE CursorRestypes[] = { + RT_WINDOW, RT_PASSIVEGRAB, RT_CURSOR +}; + +#define NUM_CURSOR_RESTYPES (sizeof (CursorRestypes) / sizeof (CursorRestypes[0])) + +static Bool +ReplaceCursorLookup (pointer value, XID id, pointer closure) +{ + ReplaceCursorLookupPtr rcl = (ReplaceCursorLookupPtr) closure; + WindowPtr pWin; + GrabPtr pGrab; + CursorPtr pCursor = 0, *pCursorRef = 0; + XID cursor = 0; + + switch (rcl->type) { + case RT_WINDOW: + pWin = (WindowPtr) value; + if (pWin->optional) + { + pCursorRef = &pWin->optional->cursor; + pCursor = *pCursorRef; + } + break; + case RT_PASSIVEGRAB: + pGrab = (GrabPtr) value; + pCursorRef = &pGrab->cursor; + pCursor = *pCursorRef; + break; + case RT_CURSOR: + pCursorRef = 0; + pCursor = (CursorPtr) value; + cursor = id; + break; + } + if (pCursor && pCursor != rcl->pNew) + { + if ((*rcl->testCursor) (pCursor, rcl->closure)) + { + rcl->pNew->refcnt++; + /* either redirect reference or update resource database */ + if (pCursorRef) + *pCursorRef = rcl->pNew; + else + ChangeResourceValue (id, RT_CURSOR, rcl->pNew); + FreeCursor (pCursor, cursor); + } + } + return FALSE; /* keep walking */ +} + +static void +ReplaceCursor (CursorPtr pCursor, + TestCursorFunc testCursor, + pointer closure) +{ + int clientIndex; + int resIndex; + ReplaceCursorLookupRec rcl; + + /* + * Cursors exist only in the resource database, windows and grabs. + * All of these are always pointed at by the resource database. Walk + * the whole thing looking for cursors + */ + rcl.testCursor = testCursor; + rcl.pNew = pCursor; + rcl.closure = closure; + + /* for each client */ + for (clientIndex = 0; clientIndex < currentMaxClients; clientIndex++) + { + if (!clients[clientIndex]) + continue; + for (resIndex = 0; resIndex < NUM_CURSOR_RESTYPES; resIndex++) + { + rcl.type = CursorRestypes[resIndex]; + /* + * This function walks the entire client resource database + */ + LookupClientResourceComplex (clients[clientIndex], + rcl.type, + ReplaceCursorLookup, + (pointer) &rcl); + } + } + /* this "knows" that WindowHasNewCursor doesn't depend on it's argument */ + WindowHasNewCursor (screenInfo.screens[0]->root); +} + +static Bool +TestForCursor (CursorPtr pCursor, pointer closure) +{ + return (pCursor == (CursorPtr) closure); +} + +int +ProcXFixesChangeCursor (ClientPtr client) +{ + CursorPtr pSource, pDestination; + REQUEST(xXFixesChangeCursorReq); + + REQUEST_SIZE_MATCH(xXFixesChangeCursorReq); + VERIFY_CURSOR (pSource, stuff->source, client, + DixReadAccess|DixGetAttrAccess); + VERIFY_CURSOR (pDestination, stuff->destination, client, + DixWriteAccess|DixSetAttrAccess); + + ReplaceCursor (pSource, TestForCursor, (pointer) pDestination); + return Success; +} + +int +SProcXFixesChangeCursor (ClientPtr client) +{ + int n; + REQUEST(xXFixesChangeCursorReq); + + swaps (&stuff->length, n); + REQUEST_SIZE_MATCH(xXFixesChangeCursorReq); + swapl (&stuff->source, n); + swapl (&stuff->destination, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +static Bool +TestForCursorName (CursorPtr pCursor, pointer closure) +{ + Atom *pName = closure; + return pCursor->name == *pName; +} + +int +ProcXFixesChangeCursorByName (ClientPtr client) +{ + CursorPtr pSource; + Atom name; + char *tchar; + REQUEST(xXFixesChangeCursorByNameReq); + + REQUEST_FIXED_SIZE(xXFixesChangeCursorByNameReq, stuff->nbytes); + VERIFY_CURSOR(pSource, stuff->source, client, + DixReadAccess|DixGetAttrAccess); + tchar = (char *) &stuff[1]; + name = MakeAtom (tchar, stuff->nbytes, FALSE); + if (name) + ReplaceCursor (pSource, TestForCursorName, &name); + return Success; +} + +int +SProcXFixesChangeCursorByName (ClientPtr client) +{ + int n; + REQUEST(xXFixesChangeCursorByNameReq); + + swaps (&stuff->length, n); + REQUEST_AT_LEAST_SIZE (xXFixesChangeCursorByNameReq); + swapl (&stuff->source, n); + swaps (&stuff->nbytes, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +/* + * Routines for manipulating the per-screen hide counts list. + * This list indicates which clients have requested cursor hiding + * for that screen. + */ + +/* Return the screen's hide-counts list element for the given client */ +static CursorHideCountPtr +findCursorHideCount (ClientPtr pClient, ScreenPtr pScreen) +{ + CursorScreenPtr cs = GetCursorScreen(pScreen); + CursorHideCountPtr pChc; + + for (pChc = cs->pCursorHideCounts; pChc != NULL; pChc = pChc->pNext) { + if (pChc->pClient == pClient) { + return pChc; + } + } + + return NULL; +} + +static int +createCursorHideCount (ClientPtr pClient, ScreenPtr pScreen) +{ + CursorScreenPtr cs = GetCursorScreen(pScreen); + CursorHideCountPtr pChc; + + pChc = (CursorHideCountPtr) malloc(sizeof(CursorHideCountRec)); + if (pChc == NULL) { + return BadAlloc; + } + pChc->pClient = pClient; + pChc->pScreen = pScreen; + pChc->hideCount = 1; + pChc->resource = FakeClientID(pClient->index); + pChc->pNext = cs->pCursorHideCounts; + cs->pCursorHideCounts = pChc; + + /* + * Create a resource for this element so it can be deleted + * when the client goes away. + */ + if (!AddResource (pChc->resource, CursorHideCountType, + (pointer) pChc)) { + free(pChc); + return BadAlloc; + } + + return Success; +} + +/* + * Delete the given hide-counts list element from its screen list. + */ +static void +deleteCursorHideCount (CursorHideCountPtr pChcToDel, ScreenPtr pScreen) +{ + CursorScreenPtr cs = GetCursorScreen(pScreen); + CursorHideCountPtr pChc, pNext; + CursorHideCountPtr pChcLast = NULL; + + pChc = cs->pCursorHideCounts; + while (pChc != NULL) { + pNext = pChc->pNext; + if (pChc == pChcToDel) { + free(pChc); + if (pChcLast == NULL) { + cs->pCursorHideCounts = pNext; + } else { + pChcLast->pNext = pNext; + } + return; + } + pChcLast = pChc; + pChc = pNext; + } +} + +/* + * Delete all the hide-counts list elements for this screen. + */ +static void +deleteCursorHideCountsForScreen (ScreenPtr pScreen) +{ + CursorScreenPtr cs = GetCursorScreen(pScreen); + CursorHideCountPtr pChc, pTmp; + + pChc = cs->pCursorHideCounts; + while (pChc != NULL) { + pTmp = pChc->pNext; + FreeResource(pChc->resource, 0); + pChc = pTmp; + } + cs->pCursorHideCounts = NULL; +} + +int +ProcXFixesHideCursor (ClientPtr client) +{ + WindowPtr pWin; + CursorHideCountPtr pChc; + REQUEST(xXFixesHideCursorReq); + int ret; + + REQUEST_SIZE_MATCH (xXFixesHideCursorReq); + + ret = dixLookupResourceByType((pointer *)&pWin, stuff->window, RT_WINDOW, + client, DixGetAttrAccess); + if (ret != Success) { + client->errorValue = stuff->window; + return ret; + } + + /* + * Has client hidden the cursor before on this screen? + * If so, just increment the count. + */ + + pChc = findCursorHideCount(client, pWin->drawable.pScreen); + if (pChc != NULL) { + pChc->hideCount++; + return Success; + } + + /* + * This is the first time this client has hid the cursor + * for this screen. + */ + ret = XaceHook(XACE_SCREEN_ACCESS, client, pWin->drawable.pScreen, + DixHideAccess); + if (ret != Success) + return ret; + + ret = createCursorHideCount(client, pWin->drawable.pScreen); + + if (ret == Success) { + DeviceIntPtr dev; + for (dev = inputInfo.devices; dev; dev = dev->next) + { + if (IsMaster(dev) && IsPointerDevice(dev)) + CursorDisplayCursor(dev, pWin->drawable.pScreen, CursorCurrent[dev->id]); + } + } + + return ret; +} + +int +SProcXFixesHideCursor (ClientPtr client) +{ + int n; + REQUEST(xXFixesHideCursorReq); + + swaps (&stuff->length, n); + REQUEST_SIZE_MATCH (xXFixesHideCursorReq); + swapl (&stuff->window, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +int +ProcXFixesShowCursor (ClientPtr client) +{ + WindowPtr pWin; + CursorHideCountPtr pChc; + int rc; + REQUEST(xXFixesShowCursorReq); + + REQUEST_SIZE_MATCH (xXFixesShowCursorReq); + + rc = dixLookupResourceByType((pointer *)&pWin, stuff->window, RT_WINDOW, + client, DixGetAttrAccess); + if (rc != Success) { + client->errorValue = stuff->window; + return rc; + } + + /* + * Has client hidden the cursor on this screen? + * If not, generate an error. + */ + pChc = findCursorHideCount(client, pWin->drawable.pScreen); + if (pChc == NULL) { + return BadMatch; + } + + rc = XaceHook(XACE_SCREEN_ACCESS, client, pWin->drawable.pScreen, + DixShowAccess); + if (rc != Success) + return rc; + + pChc->hideCount--; + if (pChc->hideCount <= 0) { + FreeResource(pChc->resource, 0); + } + + return Success; +} + +int +SProcXFixesShowCursor (ClientPtr client) +{ + int n; + REQUEST(xXFixesShowCursorReq); + + swaps (&stuff->length, n); + REQUEST_SIZE_MATCH (xXFixesShowCursorReq); + swapl (&stuff->window, n); + return (*ProcXFixesVector[stuff->xfixesReqType]) (client); +} + +static int +CursorFreeClient (pointer data, XID id) +{ + CursorEventPtr old = (CursorEventPtr) data; + CursorEventPtr *prev, e; + + for (prev = &cursorEvents; (e = *prev); prev = &e->next) + { + if (e == old) + { + *prev = e->next; + free(e); + break; + } + } + return 1; +} + +static int +CursorFreeHideCount (pointer data, XID id) +{ + CursorHideCountPtr pChc = (CursorHideCountPtr) data; + ScreenPtr pScreen = pChc->pScreen; + DeviceIntPtr dev; + + deleteCursorHideCount(pChc, pChc->pScreen); + for (dev = inputInfo.devices; dev; dev = dev->next) + { + if (IsMaster(dev) && IsPointerDevice(dev)) + CursorDisplayCursor(dev, pScreen, CursorCurrent[dev->id]); + } + + return 1; +} + +static int +CursorFreeWindow (pointer data, XID id) +{ + WindowPtr pWindow = (WindowPtr) data; + CursorEventPtr e, next; + + for (e = cursorEvents; e; e = next) + { + next = e->next; + if (e->pWindow == pWindow) + { + FreeResource (e->clientResource, 0); + } + } + return 1; +} + +static BOOL +barrier_is_horizontal(const struct PointerBarrier *barrier) +{ + return barrier->y1 == barrier->y2; +} + +static BOOL +barrier_is_vertical(const struct PointerBarrier *barrier) +{ + return barrier->x1 == barrier->x2; +} + +/** + * @return The set of barrier movement directions the movement vector + * x1/y1 → x2/y2 represents. + */ +int +barrier_get_direction(int x1, int y1, int x2, int y2) +{ + int direction = 0; + + /* which way are we trying to go */ + if (x2 > x1) + direction |= BarrierPositiveX; + if (x2 < x1) + direction |= BarrierNegativeX; + if (y2 > y1) + direction |= BarrierPositiveY; + if (y2 < y1) + direction |= BarrierNegativeY; + + return direction; +} + +/** + * Test if the barrier may block movement in the direction defined by + * x1/y1 → x2/y2. This function only tests whether the directions could be + * blocked, it does not test if the barrier actually blocks the movement. + * + * @return TRUE if the barrier blocks the direction of movement or FALSE + * otherwise. + */ +BOOL +barrier_is_blocking_direction(const struct PointerBarrier *barrier, int direction) +{ + /* Barriers define which way is ok, not which way is blocking */ + return (barrier->directions & direction) != direction; +} + +/** + * Test if the movement vector x1/y1 → x2/y2 is intersecting with the + * barrier. A movement vector with the startpoint or endpoint adjacent to + * the barrier itself counts as intersecting. + * + * @param x1 X start coordinate of movement vector + * @param y1 Y start coordinate of movement vector + * @param x2 X end coordinate of movement vector + * @param y2 Y end coordinate of movement vector + * @param[out] distance The distance between the start point and the + * intersection with the barrier (if applicable). + * @return TRUE if the barrier intersects with the given vector + */ +BOOL +barrier_is_blocking(const struct PointerBarrier *barrier, + int x1, int y1, int x2, int y2, + double *distance) +{ + BOOL rc = FALSE; + float ua, ub, ud; + int dir = barrier_get_direction(x1, y1, x2, y2); + + /* Algorithm below doesn't handle edge cases well, hence the extra + * checks. */ + if (barrier_is_vertical(barrier)) { + /* handle immediate barrier adjacency, moving away */ + if (dir & BarrierPositiveX && x1 == barrier->x1) + return FALSE; + if (dir & BarrierNegativeX && x1 == (barrier->x1 - 1)) + return FALSE; + /* startpoint adjacent to barrier, moving towards -> block */ + if (x1 == barrier->x1 && y1 >= barrier->y1 && y1 <= barrier->y2) { + *distance = 0; + return TRUE; + } + } else { + /* handle immediate barrier adjacency, moving away */ + if (dir & BarrierPositiveY && y1 == barrier->y1) + return FALSE; + if (dir & BarrierNegativeY && y1 == (barrier->y1 - 1)) + return FALSE; + /* startpoint adjacent to barrier, moving towards -> block */ + if (y1 == barrier->y1 && x1 >= barrier->x1 && x1 <= barrier->x2) { + *distance = 0; + return TRUE; + } + } + + /* not an edge case, compute distance */ + ua = 0; + ud = (barrier->y2 - barrier->y1) * (x2 - x1) - (barrier->x2 - barrier->x1) * (y2 - y1); + if (ud != 0) { + ua = ((barrier->x2 - barrier->x1) * (y1 - barrier->y1) - + (barrier->y2 - barrier->y1) * (x1 - barrier->x1)) / ud; + ub = ((x2 - x1) * (y1 - barrier->y1) - + (y2 - y1) * (x1 - barrier->x1)) / ud; + if (ua < 0 || ua > 1 || ub < 0 || ub > 1) + ua = 0; + } + + if (ua > 0 && ua <= 1) + { + double ix = barrier->x1 + ua * (barrier->x2 - barrier->x1); + double iy = barrier->y1 + ua * (barrier->y2 - barrier->y1); + + *distance = sqrt(pow(x1 - ix, 2) + pow(y1 - iy, 2)); + rc = TRUE; + } + + return rc; +} + +/** + * Find the nearest barrier that is blocking movement from x1/y1 to x2/y2. + * + * @param dir Only barriers blocking movement in direction dir are checked + * @param x1 X start coordinate of movement vector + * @param y1 Y start coordinate of movement vector + * @param x2 X end coordinate of movement vector + * @param y2 Y end coordinate of movement vector + * @return The barrier nearest to the movement origin that blocks this movement. + */ +static struct PointerBarrier* +barrier_find_nearest(CursorScreenPtr cs, int dir, + int x1, int y1, int x2, int y2) +{ + struct PointerBarrierClient *c; + struct PointerBarrier *nearest = NULL; + double min_distance = INT_MAX; /* can't get higher than that in X anyway */ + + list_for_each_entry(c, &cs->barriers, entry) { + struct PointerBarrier *b = &c->barrier; + double distance; + + if (!barrier_is_blocking_direction(b, dir)) + continue; + + if (barrier_is_blocking(b, x1, y1, x2, y2, &distance)) + { + if (min_distance > distance) + { + min_distance = distance; + nearest = b; + } + } + } + + return nearest; +} + +/** + * Clamp to the given barrier given the movement direction specified in dir. + * + * @param barrier The barrier to clamp to + * @param dir The movement direction + * @param[out] x The clamped x coordinate. + * @param[out] y The clamped x coordinate. + */ +void +barrier_clamp_to_barrier(struct PointerBarrier *barrier, int dir, int *x, int *y) +{ + if (barrier_is_vertical(barrier)) + { + if ((dir & BarrierNegativeX) & ~barrier->directions) + *x = barrier->x1; + if ((dir & BarrierPositiveX) & ~barrier->directions) + *x = barrier->x1 - 1; + } + if (barrier_is_horizontal(barrier)) + { + if ((dir & BarrierNegativeY) & ~barrier->directions) + *y = barrier->y1; + if ((dir & BarrierPositiveY) & ~barrier->directions) + *y = barrier->y1 - 1; + } +} + +static void +CursorConstrainCursorHarder(DeviceIntPtr dev, ScreenPtr screen, int mode, int *x, int *y) +{ + CursorScreenPtr cs = GetCursorScreen(screen); + + if (!list_is_empty(&cs->barriers) && !IsFloating(dev) && mode == Relative) { + int ox, oy; + int dir; + struct PointerBarrier *nearest = NULL; + + /* where are we coming from */ + miPointerGetPosition(dev, &ox, &oy); + + /* How this works: + * Given the origin and the movement vector, get the nearest barrier + * to the origin that is blocking the movement. + * Clamp to that barrier. + * Then, check from the clamped intersection to the original + * destination, again finding the nearest barrier and clamping. + */ + dir = barrier_get_direction(ox, oy, *x, *y); + + nearest = barrier_find_nearest(cs, dir, ox, oy, *x, *y); + if (nearest) { + barrier_clamp_to_barrier(nearest, dir, x, y); + + if (barrier_is_vertical(nearest)) { + dir &= ~(BarrierNegativeX | BarrierPositiveX); + ox = *x; + } else if (barrier_is_horizontal(nearest)) { + dir &= ~(BarrierNegativeY | BarrierPositiveY); + oy = *y; + } + + nearest = barrier_find_nearest(cs, dir, ox, oy, *x, *y); + if (nearest) { + barrier_clamp_to_barrier(nearest, dir, x, y); + } + } + } + + if (cs->ConstrainCursorHarder) { + screen->ConstrainCursorHarder = cs->ConstrainCursorHarder; + screen->ConstrainCursorHarder(dev, screen, mode, x, y); + screen->ConstrainCursorHarder = CursorConstrainCursorHarder; + } +} + +static struct PointerBarrierClient * +CreatePointerBarrierClient(ScreenPtr screen, ClientPtr client, + xXFixesCreatePointerBarrierReq *stuff) +{ + CursorScreenPtr cs = GetCursorScreen(screen); + struct PointerBarrierClient *ret = malloc(sizeof(*ret)); + + if (ret) { + ret->screen = screen; + ret->barrier.x1 = min(stuff->x1, stuff->x2); + ret->barrier.x2 = max(stuff->x1, stuff->x2); + ret->barrier.y1 = min(stuff->y1, stuff->y2); + ret->barrier.y2 = max(stuff->y1, stuff->y2); + ret->barrier.directions = stuff->directions & 0x0f; + if (barrier_is_horizontal(&ret->barrier)) + ret->barrier.directions &= ~(BarrierPositiveX | BarrierNegativeX); + if (barrier_is_vertical(&ret->barrier)) + ret->barrier.directions &= ~(BarrierPositiveY | BarrierNegativeY); + list_add(&ret->entry, &cs->barriers); + } + + return ret; +} + +int +ProcXFixesCreatePointerBarrier (ClientPtr client) +{ + int err; + WindowPtr pWin; + struct PointerBarrierClient *barrier; + struct PointerBarrier b; + REQUEST (xXFixesCreatePointerBarrierReq); + + REQUEST_SIZE_MATCH(xXFixesCreatePointerBarrierReq); + LEGAL_NEW_RESOURCE(stuff->barrier, client); + + err = dixLookupWindow(&pWin, stuff->window, client, DixReadAccess); + if (err != Success) { + client->errorValue = stuff->window; + return err; + } + + /* This sure does need fixing. */ + if (stuff->num_devices) + return BadImplementation; + + b.x1 = stuff->x1; + b.x2 = stuff->x2; + b.y1 = stuff->y1; + b.y2 = stuff->y2; + + if (!barrier_is_horizontal(&b) && !barrier_is_vertical(&b)) + return BadValue; + + /* no 0-sized barriers */ + if (barrier_is_horizontal(&b) && barrier_is_vertical(&b)) + return BadValue; + + if (!(barrier = CreatePointerBarrierClient(pWin->drawable.pScreen, + client, stuff))) + return BadAlloc; + + if (!AddResource(stuff->barrier, PointerBarrierType, &barrier->barrier)) + return BadAlloc; + + return Success; +} + +int +SProcXFixesCreatePointerBarrier (ClientPtr client) +{ + int n; + REQUEST(xXFixesCreatePointerBarrierReq); + + swaps(&stuff->length, n); + REQUEST_SIZE_MATCH(xXFixesCreatePointerBarrierReq); + swapl(&stuff->barrier, n); + swapl(&stuff->window, n); + swaps(&stuff->x1, n); + swaps(&stuff->y1, n); + swaps(&stuff->x2, n); + swaps(&stuff->y2, n); + swapl(&stuff->directions, n); + return ProcXFixesVector[stuff->xfixesReqType](client); +} + +static int +CursorFreeBarrier(void *data, XID id) +{ + struct PointerBarrierClient *b = NULL, *barrier; + ScreenPtr screen; + CursorScreenPtr cs; + + barrier = container_of(data, struct PointerBarrierClient, barrier); + screen = barrier->screen; + cs = GetCursorScreen(screen); + + /* find and unlink from the screen private */ + list_for_each_entry(b, &cs->barriers, entry) { + if (b == barrier) { + list_del(&b->entry); + break; + } + } + + free(barrier); + return Success; +} + +int +ProcXFixesDestroyPointerBarrier (ClientPtr client) +{ + int err; + void *barrier; + REQUEST (xXFixesDestroyPointerBarrierReq); + + REQUEST_SIZE_MATCH(xXFixesDestroyPointerBarrierReq); + + err = dixLookupResourceByType((void **)&barrier, stuff->barrier, + PointerBarrierType, client, + DixDestroyAccess); + if (err != Success) { + client->errorValue = stuff->barrier; + return err; + } + + FreeResource(stuff->barrier, RT_NONE); + return Success; +} + +int +SProcXFixesDestroyPointerBarrier (ClientPtr client) +{ + int n; + REQUEST(xXFixesDestroyPointerBarrierReq); + + swaps(&stuff->length, n); + REQUEST_SIZE_MATCH(xXFixesDestroyPointerBarrierReq); + swapl(&stuff->barrier, n); + return ProcXFixesVector[stuff->xfixesReqType](client); +} + +Bool +XFixesCursorInit (void) +{ + int i; + + if (party_like_its_1989) + CursorVisible = EnableCursor; + + if (!dixRegisterPrivateKey(&CursorScreenPrivateKeyRec, PRIVATE_SCREEN, 0)) + return FALSE; + + for (i = 0; i < screenInfo.numScreens; i++) + { + ScreenPtr pScreen = screenInfo.screens[i]; + CursorScreenPtr cs; + + cs = (CursorScreenPtr) calloc(1, sizeof (CursorScreenRec)); + if (!cs) + return FALSE; + list_init(&cs->barriers); + Wrap (cs, pScreen, CloseScreen, CursorCloseScreen); + Wrap (cs, pScreen, DisplayCursor, CursorDisplayCursor); + Wrap (cs, pScreen, ConstrainCursorHarder, CursorConstrainCursorHarder); + cs->pCursorHideCounts = NULL; + SetCursorScreen (pScreen, cs); + } + CursorClientType = CreateNewResourceType(CursorFreeClient, + "XFixesCursorClient"); + CursorHideCountType = CreateNewResourceType(CursorFreeHideCount, + "XFixesCursorHideCount"); + CursorWindowType = CreateNewResourceType(CursorFreeWindow, + "XFixesCursorWindow"); + PointerBarrierType = CreateNewResourceType(CursorFreeBarrier, + "XFixesPointerBarrier"); + + return CursorClientType && CursorHideCountType && CursorWindowType && + PointerBarrierType; +} + |