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Diffstat (limited to 'xorg-server/Xi/selectev.c')
| -rw-r--r-- | xorg-server/Xi/selectev.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/xorg-server/Xi/selectev.c b/xorg-server/Xi/selectev.c new file mode 100644 index 000000000..d3670ab1b --- /dev/null +++ b/xorg-server/Xi/selectev.c @@ -0,0 +1,186 @@ +/************************************************************ + +Copyright 1989, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + +Copyright 1989 by Hewlett-Packard Company, Palo Alto, California. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Hewlett-Packard not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +HEWLETT-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. + +********************************************************/ + +/*********************************************************************** + * + * Request to select input from an extension device. + * + */ + +#define NEED_EVENTS +#define NEED_REPLIES + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include "inputstr.h" /* DeviceIntPtr */ +#include "windowstr.h" /* window structure */ +#include <X11/extensions/XI.h> +#include <X11/extensions/XIproto.h> +#include "exevents.h" +#include "exglobals.h" + +#include "grabdev.h" +#include "selectev.h" + +extern Mask ExtExclusiveMasks[]; +extern Mask ExtValidMasks[]; + +static int +HandleDevicePresenceMask(ClientPtr client, WindowPtr win, + XEventClass *cls, CARD16 *count) +{ + int i, j; + Mask mask; + + /* We use the device ID 256 to select events that aren't bound to + * any device. For now we only handle the device presence event, + * but this could be extended to other events that aren't bound to + * a device. + * + * In order not to break in CreateMaskFromList() we remove the + * entries with device ID 256 from the XEventClass array. + */ + + mask = 0; + for (i = 0, j = 0; i < *count; i++) { + if (cls[i] >> 8 != 256) { + cls[j] = cls[i]; + j++; + continue; + } + + switch (cls[i] & 0xff) { + case _devicePresence: + mask |= DevicePresenceNotifyMask; + break; + } + } + + *count = j; + + if (mask == 0) + return Success; + + /* We always only use mksidx = 0 for events not bound to + * devices */ + + if (AddExtensionClient (win, client, mask, 0) != Success) + return BadAlloc; + + RecalculateDeviceDeliverableEvents(win); + + return Success; +} + +/*********************************************************************** + * + * Handle requests from clients with a different byte order. + * + */ + +int +SProcXSelectExtensionEvent(ClientPtr client) +{ + char n; + + REQUEST(xSelectExtensionEventReq); + swaps(&stuff->length, n); + REQUEST_AT_LEAST_SIZE(xSelectExtensionEventReq); + swapl(&stuff->window, n); + swaps(&stuff->count, n); + REQUEST_FIXED_SIZE(xSelectExtensionEventReq, + stuff->count * sizeof(CARD32)); + SwapLongs((CARD32 *) (&stuff[1]), stuff->count); + + return (ProcXSelectExtensionEvent(client)); +} + +/*********************************************************************** + * + * This procedure selects input from an extension device. + * + */ + +int +ProcXSelectExtensionEvent(ClientPtr client) +{ + int ret; + int i; + WindowPtr pWin; + struct tmask tmp[EMASKSIZE]; + + REQUEST(xSelectExtensionEventReq); + REQUEST_AT_LEAST_SIZE(xSelectExtensionEventReq); + + if (stuff->length != (sizeof(xSelectExtensionEventReq) >> 2) + stuff->count) + return BadLength; + + ret = dixLookupWindow(&pWin, stuff->window, client, DixReceiveAccess); + if (ret != Success) + return ret; + + if (HandleDevicePresenceMask(client, pWin, (XEventClass *) & stuff[1], + &stuff->count) != Success) + return BadAlloc; + + if ((ret = CreateMaskFromList(client, (XEventClass *) & stuff[1], + stuff->count, tmp, NULL, + X_SelectExtensionEvent)) != Success) + return ret; + + for (i = 0; i < EMASKSIZE; i++) + if (tmp[i].dev != NULL) { + if ((ret = + SelectForWindow((DeviceIntPtr) tmp[i].dev, pWin, client, + tmp[i].mask, ExtExclusiveMasks[i], + ExtValidMasks[i])) != Success) + return ret; + } + + return Success; +} |