selectev.c (5922B)
1 /************************************************************ 2 3 Copyright 1989, 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 in 12 all copies or substantial portions of the Software. 13 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 18 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 19 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 20 21 Except as contained in this notice, the name of The Open Group shall not be 22 used in advertising or otherwise to promote the sale, use or other dealings 23 in this Software without prior written authorization from The Open Group. 24 25 Copyright 1989 by Hewlett-Packard Company, Palo Alto, California. 26 27 All Rights Reserved 28 29 Permission to use, copy, modify, and distribute this software and its 30 documentation for any purpose and without fee is hereby granted, 31 provided that the above copyright notice appear in all copies and that 32 both that copyright notice and this permission notice appear in 33 supporting documentation, and that the name of Hewlett-Packard not be 34 used in advertising or publicity pertaining to distribution of the 35 software without specific, written prior permission. 36 37 HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 38 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL 39 HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR 40 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 41 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 42 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 43 SOFTWARE. 44 45 ********************************************************/ 46 47 /*********************************************************************** 48 * 49 * Request to select input from an extension device. 50 * 51 */ 52 53 #ifdef HAVE_DIX_CONFIG_H 54 #include <dix-config.h> 55 #endif 56 57 #include "inputstr.h" /* DeviceIntPtr */ 58 #include "windowstr.h" /* window structure */ 59 #include <X11/extensions/XI.h> 60 #include <X11/extensions/XI2.h> 61 #include <X11/extensions/XIproto.h> 62 #include "exevents.h" 63 #include "exglobals.h" 64 65 #include "grabdev.h" 66 #include "selectev.h" 67 68 static int 69 HandleDevicePresenceMask(ClientPtr client, WindowPtr win, 70 XEventClass * cls, CARD16 *count) 71 { 72 int i, j; 73 Mask mask; 74 75 /* We use the device ID 256 to select events that aren't bound to 76 * any device. For now we only handle the device presence event, 77 * but this could be extended to other events that aren't bound to 78 * a device. 79 * 80 * In order not to break in CreateMaskFromList() we remove the 81 * entries with device ID 256 from the XEventClass array. 82 */ 83 84 mask = 0; 85 for (i = 0, j = 0; i < *count; i++) { 86 if (cls[i] >> 8 != 256) { 87 cls[j] = cls[i]; 88 j++; 89 continue; 90 } 91 92 switch (cls[i] & 0xff) { 93 case _devicePresence: 94 mask |= DevicePresenceNotifyMask; 95 break; 96 } 97 } 98 99 *count = j; 100 101 if (mask == 0) 102 return Success; 103 104 /* We always only use mksidx = AllDevices for events not bound to 105 * devices */ 106 if (AddExtensionClient(win, client, mask, XIAllDevices) != Success) 107 return BadAlloc; 108 109 RecalculateDeviceDeliverableEvents(win); 110 111 return Success; 112 } 113 114 /*********************************************************************** 115 * 116 * Handle requests from clients with a different byte order. 117 * 118 */ 119 120 int _X_COLD 121 SProcXSelectExtensionEvent(ClientPtr client) 122 { 123 REQUEST(xSelectExtensionEventReq); 124 swaps(&stuff->length); 125 REQUEST_AT_LEAST_SIZE(xSelectExtensionEventReq); 126 swapl(&stuff->window); 127 swaps(&stuff->count); 128 REQUEST_FIXED_SIZE(xSelectExtensionEventReq, stuff->count * sizeof(CARD32)); 129 SwapLongs((CARD32 *) (&stuff[1]), stuff->count); 130 131 return (ProcXSelectExtensionEvent(client)); 132 } 133 134 /*********************************************************************** 135 * 136 * This procedure selects input from an extension device. 137 * 138 */ 139 140 int 141 ProcXSelectExtensionEvent(ClientPtr client) 142 { 143 int ret; 144 int i; 145 WindowPtr pWin; 146 struct tmask tmp[EMASKSIZE]; 147 148 REQUEST(xSelectExtensionEventReq); 149 REQUEST_AT_LEAST_SIZE(xSelectExtensionEventReq); 150 151 if (stuff->length != 152 bytes_to_int32(sizeof(xSelectExtensionEventReq)) + stuff->count) 153 return BadLength; 154 155 ret = dixLookupWindow(&pWin, stuff->window, client, DixReceiveAccess); 156 if (ret != Success) 157 return ret; 158 159 if (HandleDevicePresenceMask(client, pWin, (XEventClass *) &stuff[1], 160 &stuff->count) != Success) 161 return BadAlloc; 162 163 if ((ret = CreateMaskFromList(client, (XEventClass *) &stuff[1], 164 stuff->count, tmp, NULL, 165 X_SelectExtensionEvent)) != Success) 166 return ret; 167 168 for (i = 0; i < EMASKSIZE; i++) 169 if (tmp[i].dev != NULL) { 170 if (tmp[i].mask & ~XIAllMasks) { 171 client->errorValue = tmp[i].mask; 172 return BadValue; 173 } 174 if ((ret = 175 SelectForWindow((DeviceIntPtr) tmp[i].dev, pWin, client, 176 tmp[i].mask, DeviceButtonGrabMask)) != Success) 177 return ret; 178 } 179 180 return Success; 181 }