queryst.c (5422B)
1 /* 2 3 Copyright 1998, 1998 The Open Group 4 5 Permission to use, copy, modify, distribute, and sell this software and its 6 documentation for any purpose is hereby granted without fee, provided that 7 the above copyright notice appear in all copies and that both that 8 copyright notice and this permission notice appear in supporting 9 documentation. 10 11 The above copyright notice and this permission notice shall be included 12 in all copies or substantial portions of the Software. 13 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 15 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 17 IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 OTHER DEALINGS IN THE SOFTWARE. 21 22 Except as contained in this notice, the name of The Open Group shall 23 not be used in advertising or otherwise to promote the sale, use or 24 other dealings in this Software without prior written authorization 25 from The Open Group. 26 27 */ 28 29 /*********************************************************************** 30 * 31 * Request to query the state of an extension input device. 32 * 33 */ 34 35 #ifdef HAVE_DIX_CONFIG_H 36 #include <dix-config.h> 37 #endif 38 39 #include "inputstr.h" /* DeviceIntPtr */ 40 #include "windowstr.h" /* window structure */ 41 #include <X11/extensions/XI.h> 42 #include <X11/extensions/XIproto.h> 43 #include "exevents.h" 44 #include "exglobals.h" 45 #include "xkbsrv.h" 46 #include "xkbstr.h" 47 48 #include "queryst.h" 49 50 /*********************************************************************** 51 * 52 * This procedure allows a client to query the state of a device. 53 * 54 */ 55 56 int _X_COLD 57 SProcXQueryDeviceState(ClientPtr client) 58 { 59 REQUEST(xQueryDeviceStateReq); 60 swaps(&stuff->length); 61 return (ProcXQueryDeviceState(client)); 62 } 63 64 /*********************************************************************** 65 * 66 * This procedure allows frozen events to be routed. 67 * 68 */ 69 70 int 71 ProcXQueryDeviceState(ClientPtr client) 72 { 73 int rc, i; 74 int num_classes = 0; 75 int total_length = 0; 76 char *buf, *savbuf; 77 KeyClassPtr k; 78 xKeyState *tk; 79 ButtonClassPtr b; 80 xButtonState *tb; 81 ValuatorClassPtr v; 82 xValuatorState *tv; 83 xQueryDeviceStateReply rep; 84 DeviceIntPtr dev; 85 double *values; 86 87 REQUEST(xQueryDeviceStateReq); 88 REQUEST_SIZE_MATCH(xQueryDeviceStateReq); 89 90 rc = dixLookupDevice(&dev, stuff->deviceid, client, DixReadAccess); 91 if (rc != Success && rc != BadAccess) 92 return rc; 93 94 v = dev->valuator; 95 if (v != NULL && v->motionHintWindow != NULL) 96 MaybeStopDeviceHint(dev, client); 97 98 k = dev->key; 99 if (k != NULL) { 100 total_length += sizeof(xKeyState); 101 num_classes++; 102 } 103 104 b = dev->button; 105 if (b != NULL) { 106 total_length += sizeof(xButtonState); 107 num_classes++; 108 } 109 110 if (v != NULL) { 111 total_length += (sizeof(xValuatorState) + (v->numAxes * sizeof(int))); 112 num_classes++; 113 } 114 buf = (char *) calloc(total_length, 1); 115 if (!buf) 116 return BadAlloc; 117 savbuf = buf; 118 119 if (k != NULL) { 120 tk = (xKeyState *) buf; 121 tk->class = KeyClass; 122 tk->length = sizeof(xKeyState); 123 tk->num_keys = k->xkbInfo->desc->max_key_code - 124 k->xkbInfo->desc->min_key_code + 1; 125 if (rc != BadAccess) 126 for (i = 0; i < 32; i++) 127 tk->keys[i] = k->down[i]; 128 buf += sizeof(xKeyState); 129 } 130 131 if (b != NULL) { 132 tb = (xButtonState *) buf; 133 tb->class = ButtonClass; 134 tb->length = sizeof(xButtonState); 135 tb->num_buttons = b->numButtons; 136 if (rc != BadAccess) 137 memcpy(tb->buttons, b->down, sizeof(b->down)); 138 buf += sizeof(xButtonState); 139 } 140 141 if (v != NULL) { 142 tv = (xValuatorState *) buf; 143 tv->class = ValuatorClass; 144 tv->length = sizeof(xValuatorState) + v->numAxes * 4; 145 tv->num_valuators = v->numAxes; 146 tv->mode = valuator_get_mode(dev, 0); 147 tv->mode |= (dev->proximity && 148 !dev->proximity->in_proximity) ? OutOfProximity : 0; 149 buf += sizeof(xValuatorState); 150 for (i = 0, values = v->axisVal; i < v->numAxes; i++) { 151 if (rc != BadAccess) 152 *((int *) buf) = *values; 153 values++; 154 if (client->swapped) { 155 swapl((int *) buf); 156 } 157 buf += sizeof(int); 158 } 159 } 160 161 rep = (xQueryDeviceStateReply) { 162 .repType = X_Reply, 163 .RepType = X_QueryDeviceState, 164 .sequenceNumber = client->sequence, 165 .length = bytes_to_int32(total_length), 166 .num_classes = num_classes 167 }; 168 WriteReplyToClient(client, sizeof(xQueryDeviceStateReply), &rep); 169 if (total_length > 0) 170 WriteToClient(client, total_length, savbuf); 171 free(savbuf); 172 return Success; 173 } 174 175 /*********************************************************************** 176 * 177 * This procedure writes the reply for the XQueryDeviceState function, 178 * if the client and server have a different byte ordering. 179 * 180 */ 181 182 void _X_COLD 183 SRepXQueryDeviceState(ClientPtr client, int size, xQueryDeviceStateReply * rep) 184 { 185 swaps(&rep->sequenceNumber); 186 swapl(&rep->length); 187 WriteToClient(client, size, rep); 188 }