/**
* Prepend the new grab to the list of passive grabs on the window.
* Any previously existing grab that matches the new grab will be removed.
* Adding a new grab that would override another client's grab will result in
* a BadAccess.
*
* @return Success or X error code on failure.
*/
int
AddPassiveGrabToList(ClientPtr client, GrabPtr pGrab)
{
GrabPtr grab;
Mask access_mode = DixGrabAccess;
int rc;
for (grab = wPassiveGrabs(pGrab->window); grab; grab = grab->next)
{
if (GrabMatchesSecond(pGrab, grab, FALSE))
{
if (CLIENT_BITS(pGrab->resource) != CLIENT_BITS(grab->resource))
{
FreeGrab(pGrab);
return BadAccess;
}
}
}
if (pGrab->keyboardMode == GrabModeSync||pGrab->pointerMode == GrabModeSync)
access_mode |= DixFreezeAccess;
rc = XaceHook(XACE_DEVICE_ACCESS, client, pGrab->device, access_mode);
if (rc != Success)
return rc;
/* Remove all grabs that match the new one exactly */
for (grab = wPassiveGrabs(pGrab->window); grab; grab = grab->next)
{
if (GrabsAreIdentical(pGrab, grab))
{
DeletePassiveGrabFromList(grab);
break;
}
}
if (!pGrab->window->optional && !MakeWindowOptional (pGrab->window))
{
FreeGrab(pGrab);
return BadAlloc;
}
pGrab->next = pGrab->window->optional->passiveGrabs;
pGrab->window->optional->passiveGrabs = pGrab;
if (AddResource(pGrab->resource, RT_PASSIVEGRAB, (pointer)pGrab))
return Success;
return BadAlloc;
}
Bool
DeletePassiveGrabFromList(GrabPtr pMinuendGrab)
{
GrabPtr grab;
GrabPtr *deletes, *adds;
Mask ***updates, **details;
int i, ndels, nadds, nups;
Bool ok;
unsigned int any_modifier;
unsigned int any_key;
#define UPDATE(mask,exact) \
if (!(details[nups] = DeleteDetailFromMask(mask, exact))) \
ok = FALSE; \
else \
updates[nups++] = &(mask)
i = 0;
for (grab = wPassiveGrabs(pMinuendGrab->window); grab; grab = grab->next)
i++;
if (!i)
return TRUE;
deletes = malloc(i * sizeof(GrabPtr));
adds = malloc(i * sizeof(GrabPtr));
updates = malloc(i * sizeof(Mask **));
details = malloc(i * sizeof(Mask *));
if (!deletes || !adds || !updates || !details) {
free(details);
free(updates);
free(adds);
free(deletes);
return FALSE;
}
any_modifier = (pMinuendGrab->grabtype == XI2) ?
(unsigned int) XIAnyModifier : (unsigned int) AnyModifier;
any_key = (pMinuendGrab->grabtype == XI2) ?
(unsigned int) XIAnyKeycode : (unsigned int) AnyKey;
ndels = nadds = nups = 0;
ok = TRUE;
for (grab = wPassiveGrabs(pMinuendGrab->window);
grab && ok; grab = grab->next) {
if ((CLIENT_BITS(grab->resource) != CLIENT_BITS(pMinuendGrab->resource))
|| !GrabMatchesSecond(grab, pMinuendGrab, (grab->grabtype == CORE)))
continue;
if (GrabSupersedesSecond(pMinuendGrab, grab)) {
deletes[ndels++] = grab;
}
else if ((grab->detail.exact == any_key)
&& (grab->modifiersDetail.exact != any_modifier)) {
UPDATE(grab->detail.pMask, pMinuendGrab->detail.exact);
}
else if ((grab->modifiersDetail.exact == any_modifier)
&& (grab->detail.exact != any_key)) {
UPDATE(grab->modifiersDetail.pMask,
pMinuendGrab->modifiersDetail.exact);
}
else if ((pMinuendGrab->detail.exact != any_key)
&& (pMinuendGrab->modifiersDetail.exact != any_modifier)) {
GrabPtr pNewGrab;
GrabParameters param;
UPDATE(grab->detail.pMask, pMinuendGrab->detail.exact);
memset(¶m, 0, sizeof(param));
param.ownerEvents = grab->ownerEvents;
param.this_device_mode = grab->keyboardMode;
param.other_devices_mode = grab->pointerMode;
param.modifiers = any_modifier;
pNewGrab = CreateGrab(CLIENT_ID(grab->resource), grab->device,
grab->modifierDevice, grab->window,
grab->grabtype,
(GrabMask *) &grab->eventMask,
¶m, (int) grab->type,
pMinuendGrab->detail.exact,
grab->confineTo, grab->cursor);
if (!pNewGrab)
ok = FALSE;
else if (!(pNewGrab->modifiersDetail.pMask =
DeleteDetailFromMask(grab->modifiersDetail.pMask,
pMinuendGrab->modifiersDetail.
exact))
|| (!pNewGrab->window->optional &&
!MakeWindowOptional(pNewGrab->window))) {
FreeGrab(pNewGrab);
ok = FALSE;
}
else if (!AddResource(pNewGrab->resource, RT_PASSIVEGRAB,
(pointer) pNewGrab))
ok = FALSE;
else
adds[nadds++] = pNewGrab;
}
else if (pMinuendGrab->detail.exact == any_key) {
UPDATE(grab->modifiersDetail.pMask,
pMinuendGrab->modifiersDetail.exact);
}
else {
UPDATE(grab->detail.pMask, pMinuendGrab->detail.exact);
}
}
if (!ok) {
for (i = 0; i < nadds; i++)
FreeResource(adds[i]->resource, RT_NONE);
for (i = 0; i < nups; i++)
free(details[i]);
}
else {
for (i = 0; i < ndels; i++)
FreeResource(deletes[i]->resource, RT_NONE);
for (i = 0; i < nadds; i++) {
grab = adds[i];
grab->next = grab->window->optional->passiveGrabs;
grab->window->optional->passiveGrabs = grab;
}
for (i = 0; i < nups; i++) {
free(*updates[i]);
*updates[i] = details[i];
}
}
free(details);
free(updates);
free(adds);
free(deletes);
return ok;
#undef UPDATE
}
int
ProcXFixesSetWindowShapeRegion (ClientPtr client)
{
#ifdef SHAPE
WindowPtr pWin;
ScreenPtr pScreen;
RegionPtr pRegion;
RegionPtr *pDestRegion;
REQUEST(xXFixesSetWindowShapeRegionReq);
REQUEST_SIZE_MATCH(xXFixesSetWindowShapeRegionReq);
pWin = (WindowPtr) LookupIDByType (stuff->dest, RT_WINDOW);
if (!pWin)
{
client->errorValue = stuff->dest;
return BadWindow;
}
VERIFY_REGION_OR_NONE(pRegion, stuff->region, client, DixWriteAccess);
pScreen = pWin->drawable.pScreen;
switch (stuff->destKind) {
case ShapeBounding:
case ShapeClip:
case ShapeInput:
break;
default:
client->errorValue = stuff->destKind;
return BadValue;
}
if (pRegion)
{
pRegion = XFixesRegionCopy (pRegion);
if (!pRegion)
return BadAlloc;
if (!pWin->optional)
MakeWindowOptional (pWin);
switch (stuff->destKind) {
default:
case ShapeBounding:
pDestRegion = &pWin->optional->boundingShape;
break;
case ShapeClip:
pDestRegion = &pWin->optional->clipShape;
break;
case ShapeInput:
pDestRegion = &pWin->optional->inputShape;
break;
}
if (stuff->xOff || stuff->yOff)
REGION_TRANSLATE (0, pRegion, stuff->xOff, stuff->yOff);
}
else
{
if (pWin->optional)
{
switch (stuff->destKind) {
default:
case ShapeBounding:
pDestRegion = &pWin->optional->boundingShape;
break;
case ShapeClip:
pDestRegion = &pWin->optional->clipShape;
break;
case ShapeInput:
pDestRegion = &pWin->optional->inputShape;
break;
}
}
else
pDestRegion = &pRegion; /* a NULL region pointer */
}
if (*pDestRegion)
REGION_DESTROY(pScreen, *pDestRegion);
*pDestRegion = pRegion;
(*pScreen->SetShape) (pWin);
SendShapeNotify (pWin, stuff->destKind);
return (client->noClientException);
#else
return BadRequest;
#endif
}
int
ProcXFixesSetWindowShapeRegion(ClientPtr client)
{
WindowPtr pWin;
RegionPtr pRegion;
RegionPtr *pDestRegion;
int rc;
REQUEST(xXFixesSetWindowShapeRegionReq);
REQUEST_SIZE_MATCH(xXFixesSetWindowShapeRegionReq);
rc = dixLookupResourceByType((void **) &pWin, stuff->dest, RT_WINDOW,
client, DixSetAttrAccess);
if (rc != Success) {
client->errorValue = stuff->dest;
return rc;
}
VERIFY_REGION_OR_NONE(pRegion, stuff->region, client, DixWriteAccess);
switch (stuff->destKind) {
case ShapeBounding:
case ShapeClip:
case ShapeInput:
break;
default:
client->errorValue = stuff->destKind;
return BadValue;
}
if (pRegion) {
pRegion = XFixesRegionCopy(pRegion);
if (!pRegion)
return BadAlloc;
if (!pWin->optional)
MakeWindowOptional(pWin);
switch (stuff->destKind) {
default:
case ShapeBounding:
pDestRegion = &pWin->optional->boundingShape;
break;
case ShapeClip:
pDestRegion = &pWin->optional->clipShape;
break;
case ShapeInput:
pDestRegion = &pWin->optional->inputShape;
break;
}
if (stuff->xOff || stuff->yOff)
RegionTranslate(pRegion, stuff->xOff, stuff->yOff);
}
else {
if (pWin->optional) {
switch (stuff->destKind) {
default:
case ShapeBounding:
pDestRegion = &pWin->optional->boundingShape;
break;
case ShapeClip:
pDestRegion = &pWin->optional->clipShape;
break;
case ShapeInput:
pDestRegion = &pWin->optional->inputShape;
break;
}
}
else
pDestRegion = &pRegion; /* a NULL region pointer */
}
if (*pDestRegion)
RegionDestroy(*pDestRegion);
*pDestRegion = pRegion;
(*pWin->drawable.pScreen->SetShape) (pWin, stuff->destKind);
SendShapeNotify(pWin, stuff->destKind);
return Success;
}
static int
ProcShapeCombine(ClientPtr client)
{
WindowPtr pSrcWin, pDestWin;
REQUEST(xShapeCombineReq);
RegionPtr srcRgn;
RegionPtr *destRgn;
CreateDftPtr createDefault;
CreateDftPtr createSrc;
RegionPtr tmp;
int rc;
REQUEST_SIZE_MATCH(xShapeCombineReq);
UpdateCurrentTime();
rc = dixLookupWindow(&pDestWin, stuff->dest, client, DixSetAttrAccess);
if (rc != Success)
return rc;
if (!pDestWin->optional)
MakeWindowOptional(pDestWin);
switch (stuff->destKind) {
case ShapeBounding:
createDefault = CreateBoundingShape;
break;
case ShapeClip:
createDefault = CreateClipShape;
break;
case ShapeInput:
createDefault = CreateBoundingShape;
break;
default:
client->errorValue = stuff->destKind;
return BadValue;
}
rc = dixLookupWindow(&pSrcWin, stuff->src, client, DixGetAttrAccess);
if (rc != Success)
return rc;
switch (stuff->srcKind) {
case ShapeBounding:
srcRgn = wBoundingShape(pSrcWin);
createSrc = CreateBoundingShape;
break;
case ShapeClip:
srcRgn = wClipShape(pSrcWin);
createSrc = CreateClipShape;
break;
case ShapeInput:
srcRgn = wInputShape(pSrcWin);
createSrc = CreateBoundingShape;
break;
default:
client->errorValue = stuff->srcKind;
return BadValue;
}
if (pSrcWin->drawable.pScreen != pDestWin->drawable.pScreen) {
return BadMatch;
}
if (srcRgn) {
tmp = RegionCreate((BoxPtr) 0, 0);
RegionCopy(tmp, srcRgn);
srcRgn = tmp;
}
else
srcRgn = (*createSrc) (pSrcWin);
if (!pDestWin->optional)
MakeWindowOptional(pDestWin);
switch (stuff->destKind) {
case ShapeBounding:
destRgn = &pDestWin->optional->boundingShape;
break;
case ShapeClip:
destRgn = &pDestWin->optional->clipShape;
break;
case ShapeInput:
destRgn = &pDestWin->optional->inputShape;
break;
default:
return BadValue;
}
return RegionOperate(client, pDestWin, (int) stuff->destKind,
destRgn, srcRgn, (int) stuff->op,
stuff->xOff, stuff->yOff, createDefault);
}
static int
ProcShapeMask(ClientPtr client)
{
WindowPtr pWin;
ScreenPtr pScreen;
REQUEST(xShapeMaskReq);
RegionPtr srcRgn;
RegionPtr *destRgn;
PixmapPtr pPixmap;
CreateDftPtr createDefault;
int rc;
REQUEST_SIZE_MATCH(xShapeMaskReq);
UpdateCurrentTime();
rc = dixLookupWindow(&pWin, stuff->dest, client, DixSetAttrAccess);
if (rc != Success)
return rc;
switch (stuff->destKind) {
case ShapeBounding:
createDefault = CreateBoundingShape;
break;
case ShapeClip:
createDefault = CreateClipShape;
break;
case ShapeInput:
createDefault = CreateBoundingShape;
break;
default:
client->errorValue = stuff->destKind;
return BadValue;
}
pScreen = pWin->drawable.pScreen;
if (stuff->src == None)
srcRgn = 0;
else {
rc = dixLookupResourceByType((pointer *) &pPixmap, stuff->src,
RT_PIXMAP, client, DixReadAccess);
if (rc != Success)
return rc;
if (pPixmap->drawable.pScreen != pScreen ||
pPixmap->drawable.depth != 1)
return BadMatch;
srcRgn = BitmapToRegion(pScreen, pPixmap);
if (!srcRgn)
return BadAlloc;
}
if (!pWin->optional)
MakeWindowOptional(pWin);
switch (stuff->destKind) {
case ShapeBounding:
destRgn = &pWin->optional->boundingShape;
break;
case ShapeClip:
destRgn = &pWin->optional->clipShape;
break;
case ShapeInput:
destRgn = &pWin->optional->inputShape;
break;
default:
return BadValue;
}
return RegionOperate(client, pWin, (int) stuff->destKind,
destRgn, srcRgn, (int) stuff->op,
stuff->xOff, stuff->yOff, createDefault);
}
static int
ProcShapeRectangles(ClientPtr client)
{
WindowPtr pWin;
REQUEST(xShapeRectanglesReq);
xRectangle *prects;
int nrects, ctype, rc;
RegionPtr srcRgn;
RegionPtr *destRgn;
CreateDftPtr createDefault;
REQUEST_AT_LEAST_SIZE(xShapeRectanglesReq);
UpdateCurrentTime();
rc = dixLookupWindow(&pWin, stuff->dest, client, DixSetAttrAccess);
if (rc != Success)
return rc;
switch (stuff->destKind) {
case ShapeBounding:
createDefault = CreateBoundingShape;
break;
case ShapeClip:
createDefault = CreateClipShape;
break;
case ShapeInput:
createDefault = CreateBoundingShape;
break;
default:
client->errorValue = stuff->destKind;
return BadValue;
}
if ((stuff->ordering != Unsorted) && (stuff->ordering != YSorted) &&
(stuff->ordering != YXSorted) && (stuff->ordering != YXBanded)) {
client->errorValue = stuff->ordering;
return BadValue;
}
nrects = ((stuff->length << 2) - sizeof(xShapeRectanglesReq));
if (nrects & 4)
return BadLength;
nrects >>= 3;
prects = (xRectangle *) &stuff[1];
ctype = VerifyRectOrder(nrects, prects, (int) stuff->ordering);
if (ctype < 0)
return BadMatch;
srcRgn = RegionFromRects(nrects, prects, ctype);
if (!pWin->optional)
MakeWindowOptional(pWin);
switch (stuff->destKind) {
case ShapeBounding:
destRgn = &pWin->optional->boundingShape;
break;
case ShapeClip:
destRgn = &pWin->optional->clipShape;
break;
case ShapeInput:
destRgn = &pWin->optional->inputShape;
break;
default:
return BadValue;
}
return RegionOperate(client, pWin, (int) stuff->destKind,
destRgn, srcRgn, (int) stuff->op,
stuff->xOff, stuff->yOff, createDefault);
}
