4 * This event handling stuff was based on Tk.
9 #include "../src/config.h"
11 #include <sys/types.h>
21 #ifdef HAVE_SYS_SELECT_H
22 # include <sys/select.h>
27 #ifndef X_GETTIMEOFDAY
28 #define X_GETTIMEOFDAY(t) gettimeofday(t, (struct timezone*)0)
33 extern _WINGsConfiguration WINGsConfiguration
;
37 typedef struct TimerHandler
{
38 WMCallback
*callback
; /* procedure to call */
39 struct timeval when
; /* when to call the callback */
41 struct TimerHandler
*next
;
45 typedef struct IdleHandler
{
48 struct IdleHandler
*next
;
52 typedef struct InputHandler
{
53 WMInputProc
*callback
;
57 struct InputHandler
*next
;
61 /* table to map event types to event masks */
62 static unsigned long eventMasks
[] = {
65 KeyPressMask
, /* KeyPress */
66 KeyReleaseMask
, /* KeyRelease */
67 ButtonPressMask
, /* ButtonPress */
68 ButtonReleaseMask
, /* ButtonRelease */
69 PointerMotionMask
|PointerMotionHintMask
|ButtonMotionMask
70 |Button1MotionMask
|Button2MotionMask
|Button3MotionMask
71 |Button4MotionMask
|Button5MotionMask
,
73 EnterWindowMask
, /* EnterNotify */
74 LeaveWindowMask
, /* LeaveNotify */
75 FocusChangeMask
, /* FocusIn */
76 FocusChangeMask
, /* FocusOut */
77 KeymapStateMask
, /* KeymapNotify */
78 ExposureMask
, /* Expose */
79 ExposureMask
, /* GraphicsExpose */
80 ExposureMask
, /* NoExpose */
81 VisibilityChangeMask
, /* VisibilityNotify */
82 SubstructureNotifyMask
, /* CreateNotify */
83 StructureNotifyMask
, /* DestroyNotify */
84 StructureNotifyMask
, /* UnmapNotify */
85 StructureNotifyMask
, /* MapNotify */
86 SubstructureRedirectMask
, /* MapRequest */
87 StructureNotifyMask
, /* ReparentNotify */
88 StructureNotifyMask
, /* ConfigureNotify */
89 SubstructureRedirectMask
, /* ConfigureRequest */
90 StructureNotifyMask
, /* GravityNotify */
91 ResizeRedirectMask
, /* ResizeRequest */
92 StructureNotifyMask
, /* CirculateNotify */
93 SubstructureRedirectMask
, /* CirculateRequest */
94 PropertyChangeMask
, /* PropertyNotify */
95 0, /* SelectionClear */
96 0, /* SelectionRequest */
97 0, /* SelectionNotify */
98 ColormapChangeMask
, /* ColormapNotify */
99 ClientMessageMask
, /* ClientMessage */
100 0, /* Mapping Notify */
105 /* queue of timer event handlers */
106 static TimerHandler
*timerHandler
=NULL
;
108 static IdleHandler
*idleHandler
=NULL
;
110 static InputHandler
*inputHandler
=NULL
;
112 /* hook for other toolkits or wmaker process their events */
113 static WMEventHook
*extraEventHandler
=NULL
;
117 #define timerPending() (timerHandler)
119 #define idlePending() (idleHandler)
123 rightNow(struct timeval
*tv
) {
127 /* is t1 after t2 ? */
128 #define IS_AFTER(t1, t2) (((t1).tv_sec > (t2).tv_sec) || \
129 (((t1).tv_sec == (t2).tv_sec) \
130 && ((t1).tv_usec > (t2).tv_usec)))
134 addmillisecs(struct timeval
*tv
, int milliseconds
)
136 tv
->tv_usec
+= milliseconds
*1000;
138 tv
->tv_sec
+= tv
->tv_usec
/1000000;
139 tv
->tv_usec
= tv
->tv_usec
%1000000;
144 WMAddTimerHandler(int milliseconds
, WMCallback
*callback
, void *cdata
)
146 TimerHandler
*handler
, *tmp
;
148 handler
= malloc(sizeof(TimerHandler
));
152 rightNow(&handler
->when
);
153 addmillisecs(&handler
->when
, milliseconds
);
154 handler
->callback
= callback
;
155 handler
->clientData
= cdata
;
156 /* insert callback in queue, sorted by time left */
157 if (!timerHandler
|| !IS_AFTER(handler
->when
, timerHandler
->when
)) {
158 /* first in the queue */
159 handler
->next
= timerHandler
;
160 timerHandler
= handler
;
163 while (tmp
->next
&& IS_AFTER(handler
->when
, tmp
->next
->when
)) {
166 handler
->next
= tmp
->next
;
175 WMDeleteTimerWithClientData(void *cdata
)
177 TimerHandler
*handler
, *tmp
;
179 if (!cdata
|| !timerHandler
)
183 if (tmp
->clientData
==cdata
) {
184 timerHandler
= tmp
->next
;
188 if (tmp
->next
->clientData
==cdata
) {
190 tmp
->next
= handler
->next
;
202 WMDeleteTimerHandler(WMHandlerID handlerID
)
204 TimerHandler
*tmp
, *handler
=(TimerHandler
*)handlerID
;
206 if (!handler
|| !timerHandler
)
211 timerHandler
= handler
->next
;
215 if (tmp
->next
==handler
) {
216 tmp
->next
=handler
->next
;
228 WMAddIdleHandler(WMCallback
*callback
, void *cdata
)
230 IdleHandler
*handler
, *tmp
;
232 handler
= malloc(sizeof(IdleHandler
));
236 handler
->callback
= callback
;
237 handler
->clientData
= cdata
;
238 handler
->next
= NULL
;
239 /* add callback at end of queue */
241 idleHandler
= handler
;
256 WMDeleteIdleHandler(WMHandlerID handlerID
)
258 IdleHandler
*tmp
, *handler
= (IdleHandler
*)handlerID
;
260 if (!handler
|| !idleHandler
)
264 if (tmp
== handler
) {
265 idleHandler
= handler
->next
;
269 if (tmp
->next
== handler
) {
270 tmp
->next
= handler
->next
;
282 WMAddInputHandler(int fd
, int condition
, WMInputProc
*proc
, void *clientData
)
284 InputHandler
*handler
;
286 handler
= wmalloc(sizeof(InputHandler
));
289 handler
->mask
= condition
;
290 handler
->callback
= proc
;
291 handler
->clientData
= clientData
;
293 handler
->next
= inputHandler
;
295 inputHandler
= handler
;
302 WMDeleteInputHandler(WMHandlerID handlerID
)
304 InputHandler
*tmp
, *handler
= (InputHandler
*)handlerID
;
306 if (!handler
|| !inputHandler
)
310 if (tmp
== handler
) {
311 inputHandler
= handler
->next
;
315 if (tmp
->next
== handler
) {
316 tmp
->next
= handler
->next
;
329 IdleHandler
*handler
, *tmp
;
334 handler
= idleHandler
;
336 /* we will process all idleHandlers so, empty the handler list */
341 (*handler
->callback
)(handler
->clientData
);
342 /* remove the handler */
354 TimerHandler
*handler
;
359 while (timerHandler
&& IS_AFTER(now
, timerHandler
->when
)) {
360 handler
= timerHandler
;
361 timerHandler
= timerHandler
->next
;
362 handler
->next
= NULL
;
363 (*handler
->callback
)(handler
->clientData
);
371 delayUntilNextTimerEvent(struct timeval
*delay
)
376 /* The return value of this function is only valid if there _are_
384 if (IS_AFTER(now
, timerHandler
->when
)) {
388 delay
->tv_sec
= timerHandler
->when
.tv_sec
- now
.tv_sec
;
389 delay
->tv_usec
= timerHandler
->when
.tv_usec
- now
.tv_usec
;
390 if (delay
->tv_usec
< 0) {
391 delay
->tv_usec
+= 1000000;
401 * WMCreateEventHandler--
402 * Create an event handler and put it in the event handler list for the
403 * view. If the same callback and clientdata are already used in another
404 * handler, the masks are swapped.
408 WMCreateEventHandler(WMView
*view
, unsigned long mask
, WMEventProc
*eventProc
,
411 W_EventHandler
*handler
;
412 W_EventHandler
*ptr
= view
->handlerList
;
413 unsigned long eventMask
;
416 handler
= wmalloc(sizeof(W_EventHandler
));
418 handler
->nextHandler
= NULL
;
420 view
->handlerList
= handler
;
426 while (ptr
!= NULL
) {
427 if (ptr
->clientData
== clientData
&& ptr
->proc
== eventProc
) {
430 eventMask
|= ptr
->eventMask
;
432 ptr
= ptr
->nextHandler
;
435 handler
= wmalloc(sizeof(W_EventHandler
));
436 handler
->nextHandler
= view
->handlerList
;
437 view
->handlerList
= handler
;
441 /* select events for window */
442 handler
->eventMask
= mask
;
443 handler
->proc
= eventProc
;
444 handler
->clientData
= clientData
;
449 * WMDeleteEventHandler--
450 * Delete event handler matching arguments from windows
451 * event handler list.
455 WMDeleteEventHandler(WMView
*view
, unsigned long mask
, WMEventProc
*eventProc
,
458 W_EventHandler
*handler
, *ptr
, *pptr
;
460 ptr
= view
->handlerList
;
466 if (ptr
->eventMask
== mask
&& ptr
->proc
== eventProc
467 && ptr
->clientData
== clientData
) {
472 ptr
= ptr
->nextHandler
;
479 view
->handlerList
= handler
->nextHandler
;
481 pptr
->nextHandler
= handler
->nextHandler
;
489 W_CleanUpEvents(WMView
*view
)
491 W_EventHandler
*ptr
, *nptr
;
493 ptr
= view
->handlerList
;
496 nptr
= ptr
->nextHandler
;
505 getEventTime(WMScreen
*screen
, XEvent
*event
)
507 switch (event
->type
) {
510 return event
->xbutton
.time
;
513 return event
->xkey
.time
;
515 return event
->xmotion
.time
;
518 return event
->xcrossing
.time
;
520 return event
->xproperty
.time
;
522 return event
->xselectionclear
.time
;
523 case SelectionRequest
:
524 return event
->xselectionrequest
.time
;
525 case SelectionNotify
:
526 return event
->xselection
.time
;
528 return screen
->lastEventTime
;
534 W_CallDestroyHandlers(W_View
*view
)
537 W_EventHandler
*hPtr
;
539 event
.type
= DestroyNotify
;
540 event
.xdestroywindow
.window
= view
->window
;
541 event
.xdestroywindow
.event
= view
->window
;
542 hPtr
= view
->handlerList
;
544 if (hPtr
->eventMask
& StructureNotifyMask
) {
545 (*hPtr
->proc
)(&event
, hPtr
->clientData
);
548 hPtr
= hPtr
->nextHandler
;
554 WMHandleEvent(XEvent
*event
)
556 W_EventHandler
*hPtr
;
557 W_View
*view
, *vPtr
, *toplevel
;
561 if (event
->type
== MappingNotify
) {
562 XRefreshKeyboardMapping(&event
->xmapping
);
566 mask
= eventMasks
[event
->xany
.type
];
568 window
= event
->xany
.window
;
570 /* diferentiate SubstructureNotify with StructureNotify */
571 if (mask
== StructureNotifyMask
) {
572 if (event
->xmap
.event
!= event
->xmap
.window
) {
573 mask
= SubstructureNotifyMask
;
574 window
= event
->xmap
.event
;
577 view
= W_GetViewForXWindow(event
->xany
.display
, window
);
579 if (extraEventHandler
)
580 (extraEventHandler
)(event
);
585 view
->screen
->lastEventTime
= getEventTime(view
->screen
, event
);
587 toplevel
= W_TopLevelOfView(view
);
589 if (event
->type
== SelectionNotify
|| event
->type
== SelectionClear
590 || event
->type
== SelectionRequest
) {
591 /* handle selection related events */
592 W_HandleSelectionEvent(event
);
595 /* if it's a key event, redispatch it to the focused control */
596 if (mask
& (KeyPressMask
|KeyReleaseMask
)) {
597 W_View
*focused
= W_FocusedViewOfToplevel(toplevel
);
604 /* compress Motion events */
605 if (event
->type
== MotionNotify
&& !view
->flags
.dontCompressMotion
) {
606 while (XPending(event
->xmotion
.display
)) {
608 XPeekEvent(event
->xmotion
.display
, &ev
);
609 if (ev
.type
== MotionNotify
610 && event
->xmotion
.window
== ev
.xmotion
.window
611 && event
->xmotion
.subwindow
== ev
.xmotion
.subwindow
) {
613 XNextEvent(event
->xmotion
.display
, event
);
618 /* compress expose events */
619 if (event
->type
== Expose
&& !view
->flags
.dontCompressExpose
) {
620 while (XCheckTypedWindowEvent(event
->xexpose
.display
, view
->window
,
625 if (view
->screen
->modal
&& toplevel
!=view
->screen
->modalView
626 && !toplevel
->flags
.worksWhenModal
) {
627 if (event
->type
== KeyPress
|| event
->type
== KeyRelease
628 || event
->type
== MotionNotify
|| event
->type
== ButtonPress
629 || event
->type
== ButtonRelease
630 || event
->type
== FocusIn
|| event
->type
== FocusOut
) {
635 /* This is a hack. It will make the panel be secure while
636 * the event handlers are handled, as some event handler
637 * might destroy the widget. */
638 W_RetainView(toplevel
);
640 hPtr
= view
->handlerList
;
645 tmp
= hPtr
->nextHandler
;
647 if ((hPtr
->eventMask
& mask
)) {
648 (*hPtr
->proc
)(event
, hPtr
->clientData
);
654 /* pass the event to the top level window of the widget */
655 if (view
->parent
!=NULL
) {
657 while (vPtr
->parent
!=NULL
)
660 hPtr
= vPtr
->handlerList
;
664 if (hPtr
->eventMask
& mask
) {
665 (*hPtr
->proc
)(event
, hPtr
->clientData
);
667 hPtr
= hPtr
->nextHandler
;
671 /* save button click info to track double-clicks */
672 if (view
->screen
->ignoreNextDoubleClick
) {
673 view
->screen
->ignoreNextDoubleClick
= 0;
675 if (event
->type
== ButtonPress
) {
676 view
->screen
->lastClickWindow
= event
->xbutton
.window
;
677 view
->screen
->lastClickTime
= event
->xbutton
.time
;
681 W_ReleaseView(toplevel
);
688 WMIsDoubleClick(XEvent
*event
)
692 if (event
->type
!= ButtonPress
)
695 view
= W_GetViewForXWindow(event
->xany
.display
, event
->xbutton
.window
);
700 if (view
->screen
->lastClickWindow
!= event
->xbutton
.window
)
703 if (event
->xbutton
.time
- view
->screen
->lastClickTime
704 < WINGsConfiguration
.doubleClickDelay
) {
705 view
->screen
->lastClickTime
= 0;
706 view
->screen
->lastClickWindow
= None
;
707 view
->screen
->ignoreNextDoubleClick
= 1;
715 W_WaitForEvent(Display
*dpy
, unsigned long xeventmask
)
717 #if defined(HAVE_POLL) && defined(HAVE_POLL_H) && !defined(HAVE_SELECT)
719 InputHandler
*handler
;
720 int count
, timeout
, nfds
, k
, retval
;
722 for (nfds
= 1, handler
= inputHandler
;
723 handler
!= 0; handler
= handler
->next
) nfds
++;
725 fds
= wmalloc(nfds
* sizeof(struct pollfd
));
726 fds
[0].fd
= ConnectionNumber(dpy
);
727 fds
[0].events
= POLLIN
;
729 for (k
= 1, handler
= inputHandler
;
731 handler
= handler
->next
, k
++) {
732 fds
[k
].fd
= handler
->fd
;
734 if (handler
->mask
& WIReadMask
)
735 fds
[k
].events
|= POLLIN
;
737 if (handler
->mask
& WIWriteMask
)
738 fds
[k
].events
|= POLLOUT
;
741 if (handler
->mask
& WIExceptMask
)
742 FD_SET(handler
->fd
, &eset
);
747 * Setup the select() timeout to the estimated time until the
748 * next timer expires.
750 if (timerPending()) {
752 delayUntilNextTimerEvent(&tv
);
753 timeout
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
763 if (XCheckMaskEvent(dpy
, xeventmask
, &ev
)) {
764 XPutBackEvent(dpy
, &ev
);
769 count
= poll(fds
, nfds
, timeout
);
772 handler
= inputHandler
;
779 if (fds
[k
].revents
& (POLLIN
|POLLRDNORM
|POLLRDBAND
|POLLPRI
))
782 if (fds
[k
].revents
& (POLLOUT
| POLLWRBAND
))
785 if (fds
[k
].revents
& (POLLHUP
| POLLNVAL
| POLLERR
))
786 mask
|= WIExceptMask
;
788 if (mask
!=0 && handler
->callback
) {
789 (*handler
->callback
)(handler
->fd
, mask
,
790 handler
->clientData
);
793 handler
= handler
->next
;
798 retval
= fds
[0].revents
& (POLLIN
|POLLRDNORM
|POLLRDBAND
|POLLPRI
);
802 #else /* not HAVE_POLL */
804 struct timeval timeout
;
805 struct timeval
*timeoutPtr
;
806 fd_set rset
, wset
, eset
;
809 InputHandler
*handler
= inputHandler
;
815 FD_SET(ConnectionNumber(dpy
), &rset
);
816 maxfd
= ConnectionNumber(dpy
);
819 if (handler
->mask
& WIReadMask
)
820 FD_SET(handler
->fd
, &rset
);
822 if (handler
->mask
& WIWriteMask
)
823 FD_SET(handler
->fd
, &wset
);
825 if (handler
->mask
& WIExceptMask
)
826 FD_SET(handler
->fd
, &eset
);
828 if (maxfd
< handler
->fd
)
831 handler
= handler
->next
;
836 * Setup the select() timeout to the estimated time until the
837 * next timer expires.
839 if (timerPending()) {
840 delayUntilNextTimerEvent(&timeout
);
841 timeoutPtr
= &timeout
;
843 timeoutPtr
= (struct timeval
*)0;
852 if (XCheckMaskEvent(dpy
, xeventmask
, &ev
)) {
853 XPutBackEvent(dpy
, &ev
);
858 count
= select(1 + maxfd
, &rset
, &wset
, &eset
, timeoutPtr
);
861 handler
= inputHandler
;
868 if (FD_ISSET(handler
->fd
, &rset
))
871 if (FD_ISSET(handler
->fd
, &wset
))
874 if (FD_ISSET(handler
->fd
, &eset
))
875 mask
|= WIExceptMask
;
877 if (mask
!=0 && handler
->callback
) {
878 (*handler
->callback
)(handler
->fd
, mask
,
879 handler
->clientData
);
882 handler
= handler
->next
;
886 return FD_ISSET(ConnectionNumber(dpy
), &rset
);
887 #else /* not HAVE_SELECT, not HAVE_POLL */
888 Neither select nor poll
. You lose
.
889 #endif /* HAVE_SELECT */
890 #endif /* HAVE_POLL */
894 WMNextEvent(Display
*dpy
, XEvent
*event
)
896 /* Check any expired timers */
897 if (timerPending()) {
898 checkTimerHandlers();
901 while (XPending(dpy
) == 0) {
903 /* Do idle and timer stuff while there are no timer or X events */
904 while (!XPending(dpy
) && idlePending()) {
907 /* dispatch timer events */
909 checkTimerHandlers();
913 * Make sure that new events did not arrive while we were doing
914 * timer/idle stuff. Or we might block forever waiting for
915 * an event that already arrived.
917 /* wait to something happen */
918 W_WaitForEvent(dpy
, 0);
920 /* Check any expired timers */
921 if (timerPending()) {
922 checkTimerHandlers();
926 XNextEvent(dpy
, event
);
931 WMMaskEvent(Display
*dpy
, long mask
, XEvent
*event
)
933 unsigned long milliseconds
;
934 struct timeval timeout
;
935 struct timeval
*timeoutOrInfty
;
938 while (!XCheckMaskEvent(dpy
, mask
, event
)) {
939 /* Do idle stuff while there are no timer or X events */
940 while (idlePending()) {
942 if (XCheckMaskEvent(dpy
, mask
, event
))
947 * Setup the select() timeout to the estimated time until the
948 * next timer expires.
950 if (timerPending()) {
951 delayUntilNextTimerEvent(&timeout
);
952 timeoutOrInfty
= &timeout
;
954 timeoutOrInfty
= (struct timeval
*)0;
957 if (XCheckMaskEvent(dpy
, mask
, event
))
960 /* Wait for input on the X connection socket */
962 FD_SET(ConnectionNumber(dpy
), &readset
);
963 select(1 + ConnectionNumber(dpy
), &readset
, (fd_set
*)0, (fd_set
*)0,
966 /* Check any expired timers */
967 if (timerPending()) {
968 checkTimerHandlers();
975 * Cant use this because XPending() will make W_WaitForEvent
976 * return even if the event in the queue is not what we want,
977 * and if we block until some new event arrives from the
978 * server, other events already in the queue (like Expose)
982 WMMaskEvent(Display
*dpy
, long mask
, XEvent
*event
)
984 while (!XCheckMaskEvent(dpy
, mask
, event
)) {
985 /* Do idle stuff while there are no timer or X events */
986 while (idlePending()) {
988 if (XCheckMaskEvent(dpy
, mask
, event
))
992 /* Wait for input on the X connection socket */
993 W_WaitForEvent(dpy
, mask
);
995 /* Check any expired timers */
996 if (timerPending()) {
997 checkTimerHandlers();
1004 WMScreenPending(WMScreen
*scr
)
1006 if (XPending(scr
->display
))
1014 WMHookEventHandler(WMEventHook
*handler
)
1016 WMEventHook
*oldHandler
= extraEventHandler
;
1018 extraEventHandler
= handler
;