11ab64890Smrg/* 21ab64890Smrg 31ab64890SmrgCopyright 1985, 1998 The Open Group 41ab64890Smrg 51ab64890SmrgPermission to use, copy, modify, distribute, and sell this software and its 61ab64890Smrgdocumentation for any purpose is hereby granted without fee, provided that 71ab64890Smrgthe above copyright notice appear in all copies and that both that 81ab64890Smrgcopyright notice and this permission notice appear in supporting 91ab64890Smrgdocumentation. 101ab64890Smrg 111ab64890SmrgThe above copyright notice and this permission notice shall be included in 121ab64890Smrgall copies or substantial portions of the Software. 131ab64890Smrg 141ab64890SmrgTHE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 151ab64890SmrgIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 161ab64890SmrgFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 171ab64890SmrgOPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 181ab64890SmrgAN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 191ab64890SmrgCONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 201ab64890Smrg 211ab64890SmrgExcept as contained in this notice, the name of The Open Group shall not be 221ab64890Smrgused in advertising or otherwise to promote the sale, use or other dealings 231ab64890Smrgin this Software without prior written authorization from The Open Group. 241ab64890Smrg 251ab64890Smrg*/ 261ab64890Smrg 271ab64890Smrg#ifdef HAVE_CONFIG_H 281ab64890Smrg#include <config.h> 291ab64890Smrg#endif 301ab64890Smrg#include "Xlibint.h" 311ab64890Smrg 321ab64890Smrgextern long const _Xevent_to_mask[]; 331ab64890Smrg#define AllPointers (PointerMotionMask|PointerMotionHintMask|ButtonMotionMask) 341ab64890Smrg#define AllButtons (Button1MotionMask|Button2MotionMask|Button3MotionMask|\ 351ab64890Smrg Button4MotionMask|Button5MotionMask) 361ab64890Smrg 3761b2299dSmrg/* 381ab64890Smrg * Return the next event in the queue 391ab64890Smrg * for the given window matching one of the events in the mask. 401ab64890Smrg * Events earlier in the queue are not discarded. 411ab64890Smrg * If none found, flush, and then wait until an event arrives which 421ab64890Smrg * matches. 431ab64890Smrg */ 441ab64890Smrg 451ab64890Smrgint 461ab64890SmrgXWindowEvent ( 471ab64890Smrg register Display *dpy, 481ab64890Smrg Window w, /* Selected window. */ 491ab64890Smrg long mask, /* Selected event mask. */ 501ab64890Smrg register XEvent *event) /* XEvent to be filled in. */ 511ab64890Smrg{ 521ab64890Smrg register _XQEvent *prev, *qelt; 531ab64890Smrg unsigned long qe_serial = 0; 541ab64890Smrg 551ab64890Smrg LockDisplay(dpy); 56b4ee4795Smrg 57b4ee4795Smrg /* Delete unclaimed cookies */ 58b4ee4795Smrg _XFreeEventCookies(dpy); 59b4ee4795Smrg 601ab64890Smrg prev = NULL; 611ab64890Smrg while (1) { 621ab64890Smrg for (qelt = prev ? prev->next : dpy->head; 631ab64890Smrg qelt; 641ab64890Smrg prev = qelt, qelt = qelt->next) { 651ab64890Smrg if ((qelt->event.xany.window == w) && 662e9c7c8cSmrg (qelt->event.type < GenericEvent) && 671ab64890Smrg (_Xevent_to_mask[qelt->event.type] & mask) && 681ab64890Smrg ((qelt->event.type != MotionNotify) || 691ab64890Smrg (mask & AllPointers) || 701ab64890Smrg (mask & AllButtons & qelt->event.xmotion.state))) { 711ab64890Smrg *event = qelt->event; 721ab64890Smrg _XDeq(dpy, prev, qelt); 731ab64890Smrg UnlockDisplay(dpy); 741ab64890Smrg return 0; 751ab64890Smrg } 761ab64890Smrg } 771ab64890Smrg if (prev) 781ab64890Smrg qe_serial = prev->qserial_num; 791ab64890Smrg _XReadEvents(dpy); 801ab64890Smrg if (prev && prev->qserial_num != qe_serial) 811ab64890Smrg /* another thread has snatched this event */ 821ab64890Smrg prev = NULL; 831ab64890Smrg } 841ab64890Smrg} 85