diff options
Diffstat (limited to 'xorg-server/xfixes/select.c')
-rw-r--r-- | xorg-server/xfixes/select.c | 584 |
1 files changed, 292 insertions, 292 deletions
diff --git a/xorg-server/xfixes/select.c b/xorg-server/xfixes/select.c index 5ba7896cb..044294ee1 100644 --- a/xorg-server/xfixes/select.c +++ b/xorg-server/xfixes/select.c @@ -1,292 +1,292 @@ -/* - * 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> -#endif - -#include "xfixesint.h" -#include "xace.h" - -static RESTYPE SelectionClientType, SelectionWindowType; -static Bool SelectionCallbackRegistered = FALSE; - -/* - * There is a global list of windows selecting for selection events - * on every selection. This should be plenty efficient for the - * expected usage, if it does become a problem, it should be easily - * replaced with a hash table of some kind keyed off the selection atom - */ - -typedef struct _SelectionEvent *SelectionEventPtr; - -typedef struct _SelectionEvent { - SelectionEventPtr next; - Atom selection; - CARD32 eventMask; - ClientPtr pClient; - WindowPtr pWindow; - XID clientResource; -} SelectionEventRec; - -static SelectionEventPtr selectionEvents; - -static void -XFixesSelectionCallback (CallbackListPtr *callbacks, pointer data, pointer args) -{ - SelectionEventPtr e; - SelectionInfoRec *info = (SelectionInfoRec *) args; - Selection *selection = info->selection; - int subtype; - CARD32 eventMask; - - switch (info->kind) { - case SelectionSetOwner: - subtype = XFixesSetSelectionOwnerNotify; - eventMask = XFixesSetSelectionOwnerNotifyMask; - break; - case SelectionWindowDestroy: - subtype = XFixesSelectionWindowDestroyNotify; - eventMask = XFixesSelectionWindowDestroyNotifyMask; - break; - case SelectionClientClose: - subtype = XFixesSelectionClientCloseNotify; - eventMask = XFixesSelectionClientCloseNotifyMask; - break; - default: - return; - } - for (e = selectionEvents; e; e = e->next) - { - if (e->selection == selection->selection && - (e->eventMask & eventMask) && - !e->pClient->clientGone) - { - xXFixesSelectionNotifyEvent ev; - - memset(&ev, 0, sizeof(xXFixesSelectionNotifyEvent)); - ev.type = XFixesEventBase + XFixesSelectionNotify; - ev.subtype = subtype; - ev.sequenceNumber = e->pClient->sequence; - ev.window = e->pWindow->drawable.id; - if (subtype == XFixesSetSelectionOwnerNotify) - ev.owner = selection->window; - else - ev.owner = 0; - ev.selection = e->selection; - ev.timestamp = currentTime.milliseconds; - ev.selectionTimestamp = selection->lastTimeChanged.milliseconds; - WriteEventsToClient (e->pClient, 1, (xEvent *) &ev); - } - } -} - -static Bool -CheckSelectionCallback (void) -{ - if (selectionEvents) - { - if (!SelectionCallbackRegistered) - { - if (!AddCallback (&SelectionCallback, XFixesSelectionCallback, NULL)) - return FALSE; - SelectionCallbackRegistered = TRUE; - } - } - else - { - if (SelectionCallbackRegistered) - { - DeleteCallback (&SelectionCallback, XFixesSelectionCallback, NULL); - SelectionCallbackRegistered = FALSE; - } - } - return TRUE; -} - -#define SelectionAllEvents (XFixesSetSelectionOwnerNotifyMask |\ - XFixesSelectionWindowDestroyNotifyMask |\ - XFixesSelectionClientCloseNotifyMask) - -static int -XFixesSelectSelectionInput (ClientPtr pClient, - Atom selection, - WindowPtr pWindow, - CARD32 eventMask) -{ - pointer val; - int rc; - SelectionEventPtr *prev, e; - - rc = XaceHook(XACE_SELECTION_ACCESS, pClient, selection, DixGetAttrAccess); - if (rc != Success) - return rc; - - for (prev = &selectionEvents; (e = *prev); prev = &e->next) - { - if (e->selection == selection && - e->pClient == pClient && - e->pWindow == pWindow) - { - break; - } - } - if (!eventMask) - { - if (e) - { - FreeResource (e->clientResource, 0); - } - return Success; - } - if (!e) - { - e = (SelectionEventPtr) xalloc (sizeof (SelectionEventRec)); - if (!e) - return BadAlloc; - - e->next = 0; - e->selection = selection; - 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, - SelectionWindowType, serverClient, - DixGetAttrAccess); - if (rc != Success) - if (!AddResource (pWindow->drawable.id, SelectionWindowType, - (pointer) pWindow)) - { - xfree (e); - return BadAlloc; - } - - if (!AddResource (e->clientResource, SelectionClientType, (pointer) e)) - return BadAlloc; - - *prev = e; - if (!CheckSelectionCallback ()) - { - FreeResource (e->clientResource, 0); - return BadAlloc; - } - } - e->eventMask = eventMask; - return Success; -} - -int -ProcXFixesSelectSelectionInput (ClientPtr client) -{ - REQUEST (xXFixesSelectSelectionInputReq); - WindowPtr pWin; - int rc; - - REQUEST_SIZE_MATCH (xXFixesSelectSelectionInputReq); - rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess); - if (rc != Success) - return rc; - if (stuff->eventMask & ~SelectionAllEvents) - { - client->errorValue = stuff->eventMask; - return( BadValue ); - } - return XFixesSelectSelectionInput (client, stuff->selection, - pWin, stuff->eventMask); -} - -int -SProcXFixesSelectSelectionInput (ClientPtr client) -{ - register int n; - REQUEST(xXFixesSelectSelectionInputReq); - - swaps(&stuff->length, n); - swapl(&stuff->window, n); - swapl(&stuff->selection, n); - swapl(&stuff->eventMask, n); - return (*ProcXFixesVector[stuff->xfixesReqType])(client); -} - -void -SXFixesSelectionNotifyEvent (xXFixesSelectionNotifyEvent *from, - xXFixesSelectionNotifyEvent *to) -{ - to->type = from->type; - cpswaps (from->sequenceNumber, to->sequenceNumber); - cpswapl (from->window, to->window); - cpswapl (from->owner, to->owner); - cpswapl (from->selection, to->selection); - cpswapl (from->timestamp, to->timestamp); - cpswapl (from->selectionTimestamp, to->selectionTimestamp); -} - -static int -SelectionFreeClient (pointer data, XID id) -{ - SelectionEventPtr old = (SelectionEventPtr) data; - SelectionEventPtr *prev, e; - - for (prev = &selectionEvents; (e = *prev); prev = &e->next) - { - if (e == old) - { - *prev = e->next; - xfree (e); - CheckSelectionCallback (); - break; - } - } - return 1; -} - -static int -SelectionFreeWindow (pointer data, XID id) -{ - WindowPtr pWindow = (WindowPtr) data; - SelectionEventPtr e, next; - - for (e = selectionEvents; e; e = next) - { - next = e->next; - if (e->pWindow == pWindow) - { - FreeResource (e->clientResource, 0); - } - } - return 1; -} - -Bool -XFixesSelectionInit (void) -{ - SelectionClientType = CreateNewResourceType(SelectionFreeClient, - "XFixesSelectionClient"); - SelectionWindowType = CreateNewResourceType(SelectionFreeWindow, - "XFixesSelectionWindow"); - return SelectionClientType && SelectionWindowType; -} +/*
+ * 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>
+#endif
+
+#include "xfixesint.h"
+#include "xace.h"
+
+static RESTYPE SelectionClientType, SelectionWindowType;
+static Bool SelectionCallbackRegistered = FALSE;
+
+/*
+ * There is a global list of windows selecting for selection events
+ * on every selection. This should be plenty efficient for the
+ * expected usage, if it does become a problem, it should be easily
+ * replaced with a hash table of some kind keyed off the selection atom
+ */
+
+typedef struct _SelectionEvent *SelectionEventPtr;
+
+typedef struct _SelectionEvent {
+ SelectionEventPtr next;
+ Atom selection;
+ CARD32 eventMask;
+ ClientPtr pClient;
+ WindowPtr pWindow;
+ XID clientResource;
+} SelectionEventRec;
+
+static SelectionEventPtr selectionEvents;
+
+static void
+XFixesSelectionCallback (CallbackListPtr *callbacks, pointer data, pointer args)
+{
+ SelectionEventPtr e;
+ SelectionInfoRec *info = (SelectionInfoRec *) args;
+ Selection *selection = info->selection;
+ int subtype;
+ CARD32 eventMask;
+
+ switch (info->kind) {
+ case SelectionSetOwner:
+ subtype = XFixesSetSelectionOwnerNotify;
+ eventMask = XFixesSetSelectionOwnerNotifyMask;
+ break;
+ case SelectionWindowDestroy:
+ subtype = XFixesSelectionWindowDestroyNotify;
+ eventMask = XFixesSelectionWindowDestroyNotifyMask;
+ break;
+ case SelectionClientClose:
+ subtype = XFixesSelectionClientCloseNotify;
+ eventMask = XFixesSelectionClientCloseNotifyMask;
+ break;
+ default:
+ return;
+ }
+ for (e = selectionEvents; e; e = e->next)
+ {
+ if (e->selection == selection->selection &&
+ (e->eventMask & eventMask) &&
+ !e->pClient->clientGone)
+ {
+ xXFixesSelectionNotifyEvent ev;
+
+ memset(&ev, 0, sizeof(xXFixesSelectionNotifyEvent));
+ ev.type = XFixesEventBase + XFixesSelectionNotify;
+ ev.subtype = subtype;
+ ev.sequenceNumber = e->pClient->sequence;
+ ev.window = e->pWindow->drawable.id;
+ if (subtype == XFixesSetSelectionOwnerNotify)
+ ev.owner = selection->window;
+ else
+ ev.owner = 0;
+ ev.selection = e->selection;
+ ev.timestamp = currentTime.milliseconds;
+ ev.selectionTimestamp = selection->lastTimeChanged.milliseconds;
+ WriteEventsToClient (e->pClient, 1, (xEvent *) &ev);
+ }
+ }
+}
+
+static Bool
+CheckSelectionCallback (void)
+{
+ if (selectionEvents)
+ {
+ if (!SelectionCallbackRegistered)
+ {
+ if (!AddCallback (&SelectionCallback, XFixesSelectionCallback, NULL))
+ return FALSE;
+ SelectionCallbackRegistered = TRUE;
+ }
+ }
+ else
+ {
+ if (SelectionCallbackRegistered)
+ {
+ DeleteCallback (&SelectionCallback, XFixesSelectionCallback, NULL);
+ SelectionCallbackRegistered = FALSE;
+ }
+ }
+ return TRUE;
+}
+
+#define SelectionAllEvents (XFixesSetSelectionOwnerNotifyMask |\
+ XFixesSelectionWindowDestroyNotifyMask |\
+ XFixesSelectionClientCloseNotifyMask)
+
+static int
+XFixesSelectSelectionInput (ClientPtr pClient,
+ Atom selection,
+ WindowPtr pWindow,
+ CARD32 eventMask)
+{
+ pointer val;
+ int rc;
+ SelectionEventPtr *prev, e;
+
+ rc = XaceHook(XACE_SELECTION_ACCESS, pClient, selection, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+
+ for (prev = &selectionEvents; (e = *prev); prev = &e->next)
+ {
+ if (e->selection == selection &&
+ e->pClient == pClient &&
+ e->pWindow == pWindow)
+ {
+ break;
+ }
+ }
+ if (!eventMask)
+ {
+ if (e)
+ {
+ FreeResource (e->clientResource, 0);
+ }
+ return Success;
+ }
+ if (!e)
+ {
+ e = (SelectionEventPtr) malloc(sizeof (SelectionEventRec));
+ if (!e)
+ return BadAlloc;
+
+ e->next = 0;
+ e->selection = selection;
+ 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,
+ SelectionWindowType, serverClient,
+ DixGetAttrAccess);
+ if (rc != Success)
+ if (!AddResource (pWindow->drawable.id, SelectionWindowType,
+ (pointer) pWindow))
+ {
+ free(e);
+ return BadAlloc;
+ }
+
+ if (!AddResource (e->clientResource, SelectionClientType, (pointer) e))
+ return BadAlloc;
+
+ *prev = e;
+ if (!CheckSelectionCallback ())
+ {
+ FreeResource (e->clientResource, 0);
+ return BadAlloc;
+ }
+ }
+ e->eventMask = eventMask;
+ return Success;
+}
+
+int
+ProcXFixesSelectSelectionInput (ClientPtr client)
+{
+ REQUEST (xXFixesSelectSelectionInputReq);
+ WindowPtr pWin;
+ int rc;
+
+ REQUEST_SIZE_MATCH (xXFixesSelectSelectionInputReq);
+ rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+ if (stuff->eventMask & ~SelectionAllEvents)
+ {
+ client->errorValue = stuff->eventMask;
+ return( BadValue );
+ }
+ return XFixesSelectSelectionInput (client, stuff->selection,
+ pWin, stuff->eventMask);
+}
+
+int
+SProcXFixesSelectSelectionInput (ClientPtr client)
+{
+ register int n;
+ REQUEST(xXFixesSelectSelectionInputReq);
+
+ swaps(&stuff->length, n);
+ swapl(&stuff->window, n);
+ swapl(&stuff->selection, n);
+ swapl(&stuff->eventMask, n);
+ return (*ProcXFixesVector[stuff->xfixesReqType])(client);
+}
+
+void
+SXFixesSelectionNotifyEvent (xXFixesSelectionNotifyEvent *from,
+ xXFixesSelectionNotifyEvent *to)
+{
+ to->type = from->type;
+ cpswaps (from->sequenceNumber, to->sequenceNumber);
+ cpswapl (from->window, to->window);
+ cpswapl (from->owner, to->owner);
+ cpswapl (from->selection, to->selection);
+ cpswapl (from->timestamp, to->timestamp);
+ cpswapl (from->selectionTimestamp, to->selectionTimestamp);
+}
+
+static int
+SelectionFreeClient (pointer data, XID id)
+{
+ SelectionEventPtr old = (SelectionEventPtr) data;
+ SelectionEventPtr *prev, e;
+
+ for (prev = &selectionEvents; (e = *prev); prev = &e->next)
+ {
+ if (e == old)
+ {
+ *prev = e->next;
+ free(e);
+ CheckSelectionCallback ();
+ break;
+ }
+ }
+ return 1;
+}
+
+static int
+SelectionFreeWindow (pointer data, XID id)
+{
+ WindowPtr pWindow = (WindowPtr) data;
+ SelectionEventPtr e, next;
+
+ for (e = selectionEvents; e; e = next)
+ {
+ next = e->next;
+ if (e->pWindow == pWindow)
+ {
+ FreeResource (e->clientResource, 0);
+ }
+ }
+ return 1;
+}
+
+Bool
+XFixesSelectionInit (void)
+{
+ SelectionClientType = CreateNewResourceType(SelectionFreeClient,
+ "XFixesSelectionClient");
+ SelectionWindowType = CreateNewResourceType(SelectionFreeWindow,
+ "XFixesSelectionWindow");
+ return SelectionClientType && SelectionWindowType;
+}
|