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Diffstat (limited to 'src/XQueryDv.c')
| -rw-r--r-- | src/XQueryDv.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/XQueryDv.c b/src/XQueryDv.c new file mode 100644 index 0000000..e9b3be7 --- /dev/null +++ b/src/XQueryDv.c @@ -0,0 +1,196 @@ +/* $Xorg: XQueryDv.c,v 1.4 2001/02/09 02:03:51 xorgcvs Exp $ */ + +/************************************************************ + +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. + +********************************************************/ + +/*********************************************************************** + * + * XQueryDeviceState - Query the state of an extension input device. + * + */ + +#include "XI.h" +#include "XIproto.h" +#include "Xlibint.h" +#include "XInput.h" +#include "extutil.h" + +XDeviceState +*XQueryDeviceState (dpy, dev) + register Display *dpy; + XDevice *dev; + { + int i,j; + int rlen; + int size = 0; + xQueryDeviceStateReq *req; + xQueryDeviceStateReply rep; + XDeviceState *state = NULL; + XInputClass *any, *Any; + char *data; + XExtDisplayInfo *info = (XExtDisplayInfo *) XInput_find_display (dpy); + + LockDisplay (dpy); + if (_XiCheckExtInit(dpy, XInput_Initial_Release) == -1) + return ((XDeviceState *) NoSuchExtension); + + GetReq(QueryDeviceState,req); + req->reqType = info->codes->major_opcode; + req->ReqType = X_QueryDeviceState; + req->deviceid = dev->device_id; + + if (! _XReply (dpy, (xReply *) &rep, 0, xFalse)) + { + UnlockDisplay(dpy); + SyncHandle(); + return (XDeviceState *) NULL; + } + + rlen = rep.length << 2; + if (rlen > 0) + { + data = Xmalloc (rlen); + if (!data) + { + _XEatData (dpy, (unsigned long) rlen); + UnlockDisplay(dpy); + SyncHandle(); + return ((XDeviceState *) NULL); + } + _XRead (dpy, data, rlen); + + for (i=0, any=(XInputClass *) data; i<(int)rep.num_classes; i++) + { + switch (any->class) + { + case KeyClass: + size += sizeof (XKeyState); + break; + case ButtonClass: + size += sizeof (XButtonState); + break; + case ValuatorClass: + { + xValuatorState *v = (xValuatorState *) any; + size += (sizeof (XValuatorState) + + (v->num_valuators * sizeof(int))); + } + break; + } + any = (XInputClass *) ((char *) any + any->length); + } + state = (XDeviceState *) Xmalloc (size + sizeof(XDeviceState)); + if (!state) + { + UnlockDisplay(dpy); + SyncHandle(); + return ((XDeviceState *) NULL); + } + state->device_id = dev->device_id; + state->num_classes = rep.num_classes; + state->data = (XInputClass *) (state + 1); + + Any = state->data; + for (i=0, any=(XInputClass *) data; i<(int)rep.num_classes; i++) + { + switch (any->class) + { + case KeyClass: + { + xKeyState *k = (xKeyState *) any; + XKeyState *K = (XKeyState *) Any; + K->class = k->class; + K->length = sizeof (XKeyState); + K->num_keys = k->num_keys; + memcpy ((char *) &K->keys[0], (char *) &k->keys[0], 32); + Any = (XInputClass *) (K+1); + } + break; + case ButtonClass: + { + xButtonState *b = (xButtonState *) any; + XButtonState *B = (XButtonState *) Any; + B->class = b->class; + B->length = sizeof (XButtonState); + B->num_buttons = b->num_buttons; + memcpy ((char *) &B->buttons[0], (char *) &b->buttons[0], + 32); + Any = (XInputClass *) (B+1); + } + break; + case ValuatorClass: + { + xValuatorState *v = (xValuatorState *) any; + XValuatorState *V = (XValuatorState *) Any; + CARD32 *valuators = (CARD32 *) (v+1); + V->class = v->class; + V->length = sizeof (XValuatorState); + V->num_valuators = v->num_valuators; + V->mode = v->mode; + Any = (XInputClass *) (V+1); + V->valuators = (int *) Any; + for (j=0; j<(int)V->num_valuators; j++) + *(V->valuators + j) = *valuators++; + Any = (XInputClass *)((char *) Any + + V->num_valuators * sizeof (int)); + } + break; + } + any = (XInputClass *) ((char *) any + any->length); + } + Xfree(data); + } + + UnlockDisplay(dpy); + SyncHandle(); + return (state); + } + +void XFreeDeviceState (list) + XDeviceState *list; + { + XFree ((char *)list); + } |