diff options
author | José Fonseca <jrfonseca@tungstengraphics.com> | 2008-02-28 15:53:13 +0900 |
---|---|---|
committer | José Fonseca <jrfonseca@tungstengraphics.com> | 2008-02-28 15:53:13 +0900 |
commit | 2573f0e5d6f37f1a663bd472055babc97cfb3959 (patch) | |
tree | 30ca592eddf385cce61e43b88bd609797ba0bdc0 /src/glut/os2/glut_event.cpp | |
parent | 2d8d472426eb487314ae608509989141933d6192 (diff) |
Convert crlf->lf line endings.
Windows/DOS users should enable core.autocrlf from now on.
Diffstat (limited to 'src/glut/os2/glut_event.cpp')
-rw-r--r-- | src/glut/os2/glut_event.cpp | 2798 |
1 files changed, 1399 insertions, 1399 deletions
diff --git a/src/glut/os2/glut_event.cpp b/src/glut/os2/glut_event.cpp index c556ef2826..4ece82e52b 100644 --- a/src/glut/os2/glut_event.cpp +++ b/src/glut/os2/glut_event.cpp @@ -1,1399 +1,1399 @@ -/* glut_event.c */
-/* Copyright (c) Mark J. Kilgard, 1994, 1995, 1996, 1997, 1998. */
-
-/* This program is freely distributable without licensing fees
- and is provided without guarantee or warrantee expressed or
- implied. This program is -not- in the public domain. */
-
-#ifdef __VMS
-#include <GL/vms_x_fix.h>
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <assert.h>
-#include <string.h> /* Some FD_ZERO macros use memset without
- prototyping memset. */
-
-/* Much of the following #ifdef logic to include the proper
- prototypes for the select system call is based on logic
- from the X11R6.3 version of <X11/Xpoll.h>. */
-
-#if !defined(_WIN32)
-# ifdef __sgi
-# include <bstring.h> /* prototype for bzero used by FD_ZERO */
-# endif
-# if (defined(SVR4) || defined(CRAY) || defined(AIXV3)) && !defined(FD_SETSIZE)
-# include <sys/select.h> /* select system call interface */
-# ifdef luna
-# include <sysent.h>
-# endif
-# endif
- /* AIX 4.2 fubar-ed <sys/select.h>, so go to heroic measures to get it */
-# if defined(AIXV4) && !defined(NFDBITS)
-# include <sys/select.h>
-# endif
-#endif /* !_WIN32 */
-
-#include <sys/types.h>
-
-#if defined(__OS2__)
-//??? 䨣 ?? # include <sys/time.h>
-#elif !defined(_WIN32)
-# if defined(__vms) && ( __VMS_VER < 70000000 )
-# include <sys/time.h>
-# else
-# ifndef __vms
-# include <sys/time.h>
-# endif
-# endif
-# include <unistd.h>
-# include <X11/Xlib.h>
-# include <X11/keysym.h>
-#else
-# ifdef __CYGWIN32__
-# include <sys/time.h>
-# else
-# include <sys/timeb.h>
-# endif
-# ifdef __hpux
- /* XXX Bert Gijsbers <bert@mc.bio.uva.nl> reports that HP-UX
- needs different keysyms for the End, Insert, and Delete keys
- to work on an HP 715. It would be better if HP generated
- standard keysyms for standard keys. */
-# include <X11/HPkeysym.h>
-# endif
-#endif /* !_WIN32 */
-
-#include "glutint.h"
-
-#if defined(__vms) && ( __VMS_VER < 70000000 )
-#include <ssdef.h>
-#include <psldef.h>
-extern int SYS$CLREF(int efn);
-extern int SYS$SETIMR(unsigned int efn, struct timeval6 *timeout, void *ast,
- unsigned int request_id, unsigned int flags);
-extern int SYS$WFLOR(unsigned int efn, unsigned int mask);
-extern int SYS$CANTIM(unsigned int request_id, unsigned int mode);
-#endif /* __vms, VMs 6.2 or earlier */
-
-static GLUTtimer *freeTimerList = NULL;
-
-GLUTidleCB __glutIdleFunc = NULL;
-GLUTtimer *__glutTimerList = NULL;
-#ifdef SUPPORT_FORTRAN
-GLUTtimer *__glutNewTimer;
-#endif
-GLUTwindow *__glutWindowWorkList = NULL;
-GLUTmenu *__glutMappedMenu;
-GLUTmenu *__glutCurrentMenu = NULL;
-
-void (*__glutUpdateInputDeviceMaskFunc) (GLUTwindow *);
-#if !defined(_WIN32) && !defined(__OS2__)
-void (*__glutMenuItemEnterOrLeave)(GLUTmenuItem * item, int num, int type) = NULL;
-void (*__glutFinishMenu)(Window win, int x, int y);
-void (*__glutPaintMenu)(GLUTmenu * menu);
-void (*__glutStartMenu)(GLUTmenu * menu, GLUTwindow * window, int x, int y, int x_win, int y_win);
-GLUTmenu * (*__glutGetMenuByNum)(int menunum);
-GLUTmenuItem * (*__glutGetMenuItem)(GLUTmenu * menu, Window win, int *which);
-GLUTmenu * (*__glutGetMenu)(Window win);
-#endif
-
-Atom __glutMotifHints = None;
-/* Modifier mask of ~0 implies not in core input callback. */
-unsigned int __glutModifierMask = (unsigned int) ~0;
-int __glutWindowDamaged = 0;
-
-void GLUTAPIENTRY
-glutIdleFunc(GLUTidleCB idleFunc)
-{
- __glutIdleFunc = idleFunc;
-}
-
-void GLUTAPIENTRY
-glutTimerFunc(unsigned int interval, GLUTtimerCB timerFunc, int value)
-{
- GLUTtimer *timer, *other;
- GLUTtimer **prevptr;
-#ifdef OLD_VMS
- struct timeval6 now;
-#else
- struct timeval now;
-#endif
-
- if (!timerFunc)
- return;
-
- if (freeTimerList) {
- timer = freeTimerList;
- freeTimerList = timer->next;
- } else {
- timer = (GLUTtimer *) malloc(sizeof(GLUTtimer));
- if (!timer)
- __glutFatalError("out of memory.");
- }
-
- timer->func = timerFunc;
-#if defined(__vms) && ( __VMS_VER < 70000000 )
- /* VMS time is expressed in units of 100 ns */
- timer->timeout.val = interval * TICKS_PER_MILLISECOND;
-#else
- timer->timeout.tv_sec = (int) interval / 1000;
- timer->timeout.tv_usec = (int) (interval % 1000) * 1000;
-#endif
- timer->value = value;
- timer->next = NULL;
- GETTIMEOFDAY(&now);
- ADD_TIME(timer->timeout, timer->timeout, now);
- prevptr = &__glutTimerList;
- other = *prevptr;
- while (other && IS_AFTER(other->timeout, timer->timeout)) {
- prevptr = &other->next;
- other = *prevptr;
- }
- timer->next = other;
-#ifdef SUPPORT_FORTRAN
- __glutNewTimer = timer; /* for Fortran binding! */
-#endif
- *prevptr = timer;
-}
-
-void
-handleTimeouts(void)
-{
-#ifdef OLD_VMS
- struct timeval6 now;
-#else
- struct timeval now;
-#endif
- GLUTtimer *timer;
-
- /* Assumption is that __glutTimerList is already determined
- to be non-NULL. */
- GETTIMEOFDAY(&now);
- while (IS_AT_OR_AFTER(__glutTimerList->timeout, now)) {
- timer = __glutTimerList;
- timer->func(timer->value);
- __glutTimerList = timer->next;
- timer->next = freeTimerList;
- freeTimerList = timer;
- if (!__glutTimerList)
- break;
- }
-}
-
-void
-__glutPutOnWorkList(GLUTwindow * window, int workMask)
-{
- if (window->workMask) {
- /* Already on list; just OR in new workMask. */
- window->workMask |= workMask;
- } else {
- /* Update work mask and add to window work list. */
- window->workMask = workMask;
- /* Assert that if the window does not have a
- workMask already, the window should definitely
- not be the head of the work list. */
- assert(window != __glutWindowWorkList);
- window->prevWorkWin = __glutWindowWorkList;
- __glutWindowWorkList = window;
- }
-}
-
-void
-__glutPostRedisplay(GLUTwindow * window, int layerMask)
-{
- int shown = (layerMask & (GLUT_REDISPLAY_WORK | GLUT_REPAIR_WORK)) ?
- window->shownState : window->overlay->shownState;
-
- /* Post a redisplay if the window is visible (or the
- visibility of the window is unknown, ie. window->visState
- == -1) _and_ the layer is known to be shown. */
- if (window->visState != GLUT_HIDDEN
- && window->visState != GLUT_FULLY_COVERED && shown) {
- __glutPutOnWorkList(window, layerMask);
- }
-}
-
-/* CENTRY */
-void GLUTAPIENTRY
-glutPostRedisplay(void)
-{
- __glutPostRedisplay(__glutCurrentWindow, GLUT_REDISPLAY_WORK);
-}
-
-/* The advantage of this routine is that it saves the cost of a
- glutSetWindow call (entailing an expensive OpenGL context switch),
- particularly useful when multiple windows need redisplays posted at
- the same times. See also glutPostWindowOverlayRedisplay. */
-void GLUTAPIENTRY
-glutPostWindowRedisplay(int win)
-{
- __glutPostRedisplay(__glutWindowList[win - 1], GLUT_REDISPLAY_WORK);
-}
-
-/* ENDCENTRY */
-static GLUTeventParser *eventParserList = NULL;
-
-/* __glutRegisterEventParser allows another module to register
- to intercept X events types not otherwise acted on by the
- GLUT processEventsAndTimeouts routine. The X Input
- extension support code uses an event parser for handling X
- Input extension events. */
-
-void
-__glutRegisterEventParser(GLUTeventParser * parser)
-{
- parser->next = eventParserList;
- eventParserList = parser;
-}
-
-static void
-markWindowHidden(GLUTwindow * window)
-{
- if (GLUT_HIDDEN != window->visState) {
- GLUTwindow *child;
-
- if (window->windowStatus) {
- window->visState = GLUT_HIDDEN;
- __glutSetWindow(window);
- window->windowStatus(GLUT_HIDDEN);
- }
- /* An unmap is only reported on a single window; its
- descendents need to know they are no longer visible. */
- child = window->children;
- while (child) {
- markWindowHidden(child);
- child = child->siblings;
- }
- }
-}
-
-#if !defined(_WIN32) && !defined(__OS2__)
-
-static void
-purgeStaleWindow(Window win)
-{
- GLUTstale **pEntry = &__glutStaleWindowList;
- GLUTstale *entry = __glutStaleWindowList;
-
- /* Tranverse singly-linked stale window list look for the
- window ID. */
- while (entry) {
- if (entry->win == win) {
- /* Found it; delete it. */
- *pEntry = entry->next;
- free(entry);
- return;
- } else {
- pEntry = &entry->next;
- entry = *pEntry;
- }
- }
-}
-
-/* Unlike XNextEvent, if a signal arrives,
- interruptibleXNextEvent will return (with a zero return
- value). This helps GLUT drop out of XNextEvent if a signal
- is delivered. The intent is so that a GLUT program can call
- glutIdleFunc in a signal handler to register an idle func
- and then immediately get dropped into the idle func (after
- returning from the signal handler). The idea is to make
- GLUT's main loop reliably interruptible by signals. */
-static int
-interruptibleXNextEvent(Display * dpy, XEvent * event)
-{
- fd_set fds;
- int rc;
-
- /* Flush X protocol since XPending does not do this
- implicitly. */
- XFlush(__glutDisplay);
- for (;;) {
- if (XPending(__glutDisplay)) {
- XNextEvent(dpy, event);
- return 1;
- }
-#ifndef VMS
- /* the combination ConectionNumber-select is buggy on VMS. Sometimes it
- * fails. This part of the code hangs the program on VMS7.2. But even
- * without it the program seems to run correctly.
- * Note that this is a bug in the VMS/DECWindows run-time-libraries.
- * Compaq engeneering does not want or is not able to make a fix.
- * (last sentence is a quotation from Compaq when I reported the
- * problem January 2000) */
- FD_ZERO(&fds);
- FD_SET(__glutConnectionFD, &fds);
- rc = select(__glutConnectionFD + 1, &fds, NULL, NULL, NULL);
- if (rc < 0) {
- if (errno == EINTR) {
- return 0;
- } else {
- __glutFatalError("select error.");
- }
- }
-#endif
- }
-}
-
-#endif
-
-static void
-processEventsAndTimeouts(void)
-{
- do {
-#if defined(__OS2__)
- QMSG qmsg; /* message from message queue */
- extern HAB hab; /* PM anchor block handle */
-
- if(! WinGetMsg( hab, &qmsg, 0UL, 0UL, 0UL ) )
- exit(0);
- WinDispatchMsg( hab, /* PM anchor block handle */
- &qmsg ); /* pointer to message */
-
-#elif defined(_WIN32)
- MSG event;
-
- if(!GetMessage(&event, NULL, 0, 0)) /* bail if no more messages */
- exit(0);
- TranslateMessage(&event); /* translate virtual-key messages */
- DispatchMessage(&event); /* call the window proc */
- /* see win32_event.c for event (message) processing procedures */
-#else
- static int mappedMenuButton;
- GLUTeventParser *parser;
- XEvent event, ahead;
- GLUTwindow *window;
- GLUTkeyboardCB keyboard;
- GLUTspecialCB special;
- int gotEvent, width, height;
-
- gotEvent = interruptibleXNextEvent(__glutDisplay, &event);
- if (gotEvent) {
- switch (event.type) {
- case MappingNotify:
- XRefreshKeyboardMapping((XMappingEvent *) & event);
- break;
- case ConfigureNotify:
- window = __glutGetWindow(event.xconfigure.window);
- if (window) {
- if (window->win != event.xconfigure.window) {
- /* Ignore ConfigureNotify sent to the overlay
- planes. GLUT could get here because overlays
- select for StructureNotify events to receive
- DestroyNotify. */
- break;
- }
- width = event.xconfigure.width;
- height = event.xconfigure.height;
- if (width != window->width || height != window->height) {
- if (window->overlay) {
- XResizeWindow(__glutDisplay, window->overlay->win, width, height);
- }
- window->width = width;
- window->height = height;
- __glutSetWindow(window);
- /* Do not execute OpenGL out of sequence with
- respect to the XResizeWindow request! */
- glXWaitX();
- window->reshape(width, height);
- window->forceReshape = False;
- /* A reshape should be considered like posting a
- repair; this is necessary for the "Mesa
- glXSwapBuffers to repair damage" hack to operate
- correctly. Without it, there's not an initial
- back buffer render from which to blit from when
- damage happens to the window. */
- __glutPostRedisplay(window, GLUT_REPAIR_WORK);
- }
- }
- break;
- case Expose:
- /* compress expose events */
- while (XEventsQueued(__glutDisplay, QueuedAfterReading)
- > 0) {
- XPeekEvent(__glutDisplay, &ahead);
- if (ahead.type != Expose ||
- ahead.xexpose.window != event.xexpose.window) {
- break;
- }
- XNextEvent(__glutDisplay, &event);
- }
- if (event.xexpose.count == 0) {
- GLUTmenu *menu;
-
- if (__glutMappedMenu &&
- (menu = __glutGetMenu(event.xexpose.window))) {
- __glutPaintMenu(menu);
- } else {
- window = __glutGetWindow(event.xexpose.window);
- if (window) {
- if (window->win == event.xexpose.window) {
- __glutPostRedisplay(window, GLUT_REPAIR_WORK);
- } else if (window->overlay && window->overlay->win == event.xexpose.window) {
- __glutPostRedisplay(window, GLUT_OVERLAY_REPAIR_WORK);
- }
- }
- }
- } else {
- /* there are more exposes to read; wait to redisplay */
- }
- break;
- case ButtonPress:
- case ButtonRelease:
- if (__glutMappedMenu && event.type == ButtonRelease
- && mappedMenuButton == event.xbutton.button) {
- /* Menu is currently popped up and its button is
- released. */
- __glutFinishMenu(event.xbutton.window, event.xbutton.x, event.xbutton.y);
- } else {
- window = __glutGetWindow(event.xbutton.window);
- if (window) {
- GLUTmenu *menu;
- int menuNum;
-
- menuNum = window->menu[event.xbutton.button - 1];
- /* Make sure that __glutGetMenuByNum is only called if there
- really is a menu present. */
- if ((menuNum > 0) && (menu = __glutGetMenuByNum(menuNum))) {
- if (event.type == ButtonPress && !__glutMappedMenu) {
- __glutStartMenu(menu, window,
- event.xbutton.x_root, event.xbutton.y_root,
- event.xbutton.x, event.xbutton.y);
- mappedMenuButton = event.xbutton.button;
- } else {
- /* Ignore a release of a button with a menu
- attatched to it when no menu is popped up,
- or ignore a press when another menu is
- already popped up. */
- }
- } else if (window->mouse) {
- __glutSetWindow(window);
- __glutModifierMask = event.xbutton.state;
- window->mouse(event.xbutton.button - 1,
- event.type == ButtonRelease ?
- GLUT_UP : GLUT_DOWN,
- event.xbutton.x, event.xbutton.y);
- __glutModifierMask = ~0;
- } else {
- /* Stray mouse events. Ignore. */
- }
- } else {
- /* Window might have been destroyed and all the
- events for the window may not yet be received. */
- }
- }
- break;
- case MotionNotify:
- if (!__glutMappedMenu) {
- window = __glutGetWindow(event.xmotion.window);
- if (window) {
- /* If motion function registered _and_ buttons held
- * down, call motion function... */
- if (window->motion && event.xmotion.state &
- (Button1Mask | Button2Mask | Button3Mask)) {
- __glutSetWindow(window);
- window->motion(event.xmotion.x, event.xmotion.y);
- }
- /* If passive motion function registered _and_
- buttons not held down, call passive motion
- function... */
- else if (window->passive &&
- ((event.xmotion.state &
- (Button1Mask | Button2Mask | Button3Mask)) ==
- 0)) {
- __glutSetWindow(window);
- window->passive(event.xmotion.x,
- event.xmotion.y);
- }
- }
- } else {
- /* Motion events are thrown away when a pop up menu
- is active. */
- }
- break;
- case KeyPress:
- case KeyRelease:
- window = __glutGetWindow(event.xkey.window);
- if (!window) {
- break;
- }
- if (event.type == KeyPress) {
- keyboard = window->keyboard;
- } else {
-
- /* If we are ignoring auto repeated keys for this window,
- check if the next event in the X event queue is a KeyPress
- for the exact same key (and at the exact same time) as the
- key being released. The X11 protocol will send auto
- repeated keys as such KeyRelease/KeyPress pairs. */
-
- if (window->ignoreKeyRepeat) {
- if (XEventsQueued(__glutDisplay, QueuedAfterReading)) {
- XPeekEvent(__glutDisplay, &ahead);
- if (ahead.type == KeyPress
- && ahead.xkey.window == event.xkey.window
- && ahead.xkey.keycode == event.xkey.keycode
- && ahead.xkey.time == event.xkey.time) {
- /* Pop off the repeated KeyPress and ignore
- the auto repeated KeyRelease/KeyPress pair. */
- XNextEvent(__glutDisplay, &event);
- break;
- }
- }
- }
- keyboard = window->keyboardUp;
- }
- if (keyboard) {
- char tmp[1];
- int rc;
-
- rc = XLookupString(&event.xkey, tmp, sizeof(tmp),
- NULL, NULL);
- if (rc) {
- __glutSetWindow(window);
- __glutModifierMask = event.xkey.state;
- keyboard(tmp[0],
- event.xkey.x, event.xkey.y);
- __glutModifierMask = ~0;
- break;
- }
- }
- if (event.type == KeyPress) {
- special = window->special;
- } else {
- special = window->specialUp;
- }
- if (special) {
- KeySym ks;
- int key;
-
-/* Introduced in X11R6: (Partial list of) Keypad Functions. Define
- in place in case compiling against an older pre-X11R6
- X11/keysymdef.h file. */
-#ifndef XK_KP_Home
-#define XK_KP_Home 0xFF95
-#endif
-#ifndef XK_KP_Left
-#define XK_KP_Left 0xFF96
-#endif
-#ifndef XK_KP_Up
-#define XK_KP_Up 0xFF97
-#endif
-#ifndef XK_KP_Right
-#define XK_KP_Right 0xFF98
-#endif
-#ifndef XK_KP_Down
-#define XK_KP_Down 0xFF99
-#endif
-#ifndef XK_KP_Prior
-#define XK_KP_Prior 0xFF9A
-#endif
-#ifndef XK_KP_Next
-#define XK_KP_Next 0xFF9B
-#endif
-#ifndef XK_KP_End
-#define XK_KP_End 0xFF9C
-#endif
-#ifndef XK_KP_Insert
-#define XK_KP_Insert 0xFF9E
-#endif
-#ifndef XK_KP_Delete
-#define XK_KP_Delete 0xFF9F
-#endif
-
- ks = XLookupKeysym((XKeyEvent *) & event, 0);
- /* XXX Verbose, but makes no assumptions about keysym
- layout. */
- switch (ks) {
-/* *INDENT-OFF* */
- /* function keys */
- case XK_F1: key = GLUT_KEY_F1; break;
- case XK_F2: key = GLUT_KEY_F2; break;
- case XK_F3: key = GLUT_KEY_F3; break;
- case XK_F4: key = GLUT_KEY_F4; break;
- case XK_F5: key = GLUT_KEY_F5; break;
- case XK_F6: key = GLUT_KEY_F6; break;
- case XK_F7: key = GLUT_KEY_F7; break;
- case XK_F8: key = GLUT_KEY_F8; break;
- case XK_F9: key = GLUT_KEY_F9; break;
- case XK_F10: key = GLUT_KEY_F10; break;
- case XK_F11: key = GLUT_KEY_F11; break;
- case XK_F12: key = GLUT_KEY_F12; break;
- /* directional keys */
- case XK_KP_Left:
- case XK_Left: key = GLUT_KEY_LEFT; break;
- case XK_KP_Up: /* Introduced in X11R6. */
- case XK_Up: key = GLUT_KEY_UP; break;
- case XK_KP_Right: /* Introduced in X11R6. */
- case XK_Right: key = GLUT_KEY_RIGHT; break;
- case XK_KP_Down: /* Introduced in X11R6. */
- case XK_Down: key = GLUT_KEY_DOWN; break;
-/* *INDENT-ON* */
-
- case XK_KP_Prior: /* Introduced in X11R6. */
- case XK_Prior:
- /* XK_Prior same as X11R6's XK_Page_Up */
- key = GLUT_KEY_PAGE_UP;
- break;
- case XK_KP_Next: /* Introduced in X11R6. */
- case XK_Next:
- /* XK_Next same as X11R6's XK_Page_Down */
- key = GLUT_KEY_PAGE_DOWN;
- break;
- case XK_KP_Home: /* Introduced in X11R6. */
- case XK_Home:
- key = GLUT_KEY_HOME;
- break;
-#ifdef __hpux
- case XK_Select:
-#endif
- case XK_KP_End: /* Introduced in X11R6. */
- case XK_End:
- key = GLUT_KEY_END;
- break;
-#ifdef __hpux
- case XK_InsertChar:
-#endif
- case XK_KP_Insert: /* Introduced in X11R6. */
- case XK_Insert:
- key = GLUT_KEY_INSERT;
- break;
-#ifdef __hpux
- case XK_DeleteChar:
-#endif
- case XK_KP_Delete: /* Introduced in X11R6. */
- /* The Delete character is really an ASCII key. */
- __glutSetWindow(window);
- keyboard(127, /* ASCII Delete character. */
- event.xkey.x, event.xkey.y);
- goto skip;
- default:
- goto skip;
- }
- __glutSetWindow(window);
- __glutModifierMask = event.xkey.state;
- special(key, event.xkey.x, event.xkey.y);
- __glutModifierMask = ~0;
- skip:;
- }
- break;
- case EnterNotify:
- case LeaveNotify:
- if (event.xcrossing.mode != NotifyNormal ||
- event.xcrossing.detail == NotifyNonlinearVirtual ||
- event.xcrossing.detail == NotifyVirtual) {
-
- /* Careful to ignore Enter/LeaveNotify events that
- come from the pop-up menu pointer grab and ungrab.
- Also, ignore "virtual" Enter/LeaveNotify events
- since they represent the pointer passing through
- the window hierarchy without actually entering or
- leaving the actual real estate of a window. */
-
- break;
- }
- if (__glutMappedMenu) {
- GLUTmenuItem *item;
- int num;
-
- item = __glutGetMenuItem(__glutMappedMenu,
- event.xcrossing.window, &num);
- if (item) {
- __glutMenuItemEnterOrLeave(item, num, event.type);
- break;
- }
- }
- window = __glutGetWindow(event.xcrossing.window);
- if (window) {
- if (window->entry) {
- if (event.type == EnterNotify) {
-
- /* With overlays established, X can report two
- enter events for both the overlay and normal
- plane window. Do not generate a second enter
- callback if we reported one without an
- intervening leave. */
-
- if (window->entryState != EnterNotify) {
- int num = window->num;
- Window xid = window->win;
-
- window->entryState = EnterNotify;
- __glutSetWindow(window);
- window->entry(GLUT_ENTERED);
-
- if (__glutMappedMenu) {
-
- /* Do not generate any passive motion events
- when menus are in use. */
-
- } else {
-
- /* An EnterNotify event can result in a
- "compound" callback if a passive motion
- callback is also registered. In this case,
- be a little paranoid about the possibility
- the window could have been destroyed in the
- entry callback. */
-
- window = __glutWindowList[num];
- if (window && window->passive && window->win == xid) {
- __glutSetWindow(window);
- window->passive(event.xcrossing.x, event.xcrossing.y);
- }
- }
- }
- } else {
- if (window->entryState != LeaveNotify) {
-
- /* When an overlay is established for a window
- already mapped and with the pointer in it,
- the X server will generate a leave/enter
- event pair as the pointer leaves (without
- moving) from the normal plane X window to
- the newly mapped overlay X window (or vice
- versa). This enter/leave pair should not be
- reported to the GLUT program since the pair
- is a consequence of creating (or destroying)
- the overlay, not an actual leave from the
- GLUT window. */
-
- if (XEventsQueued(__glutDisplay, QueuedAfterReading)) {
- XPeekEvent(__glutDisplay, &ahead);
- if (ahead.type == EnterNotify &&
- __glutGetWindow(ahead.xcrossing.window) == window) {
- XNextEvent(__glutDisplay, &event);
- break;
- }
- }
- window->entryState = LeaveNotify;
- __glutSetWindow(window);
- window->entry(GLUT_LEFT);
- }
- }
- } else if (window->passive) {
- __glutSetWindow(window);
- window->passive(event.xcrossing.x, event.xcrossing.y);
- }
- }
- break;
- case UnmapNotify:
- /* MapNotify events are not needed to maintain
- visibility state since VisibilityNotify events will
- be delivered when a window becomes visible from
- mapping. However, VisibilityNotify events are not
- delivered when a window is unmapped (for the window
- or its children). */
- window = __glutGetWindow(event.xunmap.window);
- if (window) {
- if (window->win != event.xconfigure.window) {
- /* Ignore UnmapNotify sent to the overlay planes.
- GLUT could get here because overlays select for
- StructureNotify events to receive DestroyNotify.
- */
- break;
- }
- markWindowHidden(window);
- }
- break;
- case VisibilityNotify:
- window = __glutGetWindow(event.xvisibility.window);
- if (window) {
- /* VisibilityUnobscured+1 = GLUT_FULLY_RETAINED,
- VisibilityPartiallyObscured+1 =
- GLUT_PARTIALLY_RETAINED, VisibilityFullyObscured+1
- = GLUT_FULLY_COVERED. */
- int visState = event.xvisibility.state + 1;
-
- if (visState != window->visState) {
- if (window->windowStatus) {
- window->visState = visState;
- __glutSetWindow(window);
- window->windowStatus(visState);
- }
- }
- }
- break;
- case ClientMessage:
- if (event.xclient.data.l[0] == __glutWMDeleteWindow)
- exit(0);
- break;
- case DestroyNotify:
- purgeStaleWindow(event.xdestroywindow.window);
- break;
- case CirculateNotify:
- case CreateNotify:
- case GravityNotify:
- case ReparentNotify:
- /* Uninteresting to GLUT (but possible for GLUT to
- receive). */
- break;
- default:
- /* Pass events not directly handled by the GLUT main
- event loop to any event parsers that have been
- registered. In this way, X Input extension events
- are passed to the correct handler without forcing
- all GLUT programs to support X Input event handling.
- */
- parser = eventParserList;
- while (parser) {
- if (parser->func(&event))
- break;
- parser = parser->next;
- }
- break;
- }
- }
-#endif /* _WIN32 */
- if (__glutTimerList) {
- handleTimeouts();
- }
- }
- while (XPending(__glutDisplay));
-}
-
-static void
-waitForSomething(void)
-{
-#if defined(__vms) && ( __VMS_VER < 70000000 )
- static struct timeval6 zerotime =
- {0};
- unsigned int timer_efn;
-#define timer_id 'glut' /* random :-) number */
- unsigned int wait_mask;
-#else
- static struct timeval zerotime =
- {0, 0};
-#if defined(__OS2__)
-
-#elif !defined(_WIN32)
- fd_set fds;
-#endif
-#endif
-#ifdef OLD_VMS
- struct timeval6 now, timeout, waittime;
-#else
- struct timeval now, timeout, waittime;
-#endif
-#if !defined(_WIN32)
- int rc;
-#endif
-
- /* Flush X protocol since XPending does not do this
- implicitly. */
- XFlush(__glutDisplay);
- if (XPending(__glutDisplay)) {
- /* It is possible (but quite rare) that XFlush may have
- needed to wait for a writable X connection file
- descriptor, and in the process, may have had to read off
- X protocol from the file descriptor. If XPending is true,
- this case occured and we should avoid waiting in select
- since X protocol buffered within Xlib is due to be
- processed and potentially no more X protocol is on the
- file descriptor, so we would risk waiting improperly in
- select. */
- goto immediatelyHandleXinput;
- }
-#if defined(__vms) && ( __VMS_VER < 70000000 )
- timeout = __glutTimerList->timeout;
- GETTIMEOFDAY(&now);
- wait_mask = 1 << (__glutConnectionFD & 31);
- if (IS_AFTER(now, timeout)) {
- /* We need an event flag for the timer. */
- /* XXX The `right' way to do this is to use LIB$GET_EF, but
- since it needs to be in the same cluster as the EFN for
- the display, we will have hack it. */
- timer_efn = __glutConnectionFD - 1;
- if ((timer_efn / 32) != (__glutConnectionFD / 32)) {
- timer_efn = __glutConnectionFD + 1;
- }
- rc = SYS$CLREF(timer_efn);
- rc = SYS$SETIMR(timer_efn, &timeout, NULL, timer_id, 0);
- wait_mask |= 1 << (timer_efn & 31);
- } else {
- timer_efn = 0;
- }
- rc = SYS$WFLOR(__glutConnectionFD, wait_mask);
- if (timer_efn != 0 && SYS$CLREF(timer_efn) == SS$_WASCLR) {
- rc = SYS$CANTIM(timer_id, PSL$C_USER);
- }
- /* XXX There does not seem to be checking of "rc" in the code
- above. Can any of the SYS$ routines above fail? */
-#else /* not vms6.2 or lower */
-#if defined(__OS2__)
-
-#elif !defined(_WIN32)
- FD_ZERO(&fds);
- FD_SET(__glutConnectionFD, &fds);
-#endif
- timeout = __glutTimerList->timeout;
- GETTIMEOFDAY(&now);
- if (IS_AFTER(now, timeout)) {
- TIMEDELTA(waittime, timeout, now);
- } else {
- waittime = zerotime;
- }
-
-#if defined(__OS2__)
- DosSleep(0);
-#elif !defined(_WIN32)
- rc = select(__glutConnectionFD + 1, &fds,
- NULL, NULL, &waittime);
- if (rc < 0 && errno != EINTR)
- __glutFatalError("select error.");
-#else
-
- MsgWaitForMultipleObjects(0, NULL, FALSE,
- waittime.tv_sec*1000 + waittime.tv_usec/1000, QS_ALLINPUT);
-
-#endif
-#endif /* not vms6.2 or lower */
- /* Without considering the cause of select unblocking, check
- for pending X events and handle any timeouts (by calling
- processEventsAndTimeouts). We always look for X events
- even if select returned with 0 (indicating a timeout);
- otherwise we risk starving X event processing by continous
- timeouts. */
- if (XPending(__glutDisplay)) {
- immediatelyHandleXinput:
- processEventsAndTimeouts();
- } else {
- if (__glutTimerList)
- handleTimeouts();
- }
-}
-
-static void
-idleWait(void)
-{
- if (XPending(__glutDisplay)) {
- processEventsAndTimeouts();
- } else {
- if (__glutTimerList) {
- handleTimeouts();
- }
- }
- /* Make sure idle func still exists! */
- if (__glutIdleFunc) {
- __glutIdleFunc();
- }
-}
-
-static GLUTwindow **beforeEnd;
-
-static GLUTwindow *
-processWindowWorkList(GLUTwindow * window)
-{
- int workMask;
-
- if (window->prevWorkWin) {
- window->prevWorkWin = processWindowWorkList(window->prevWorkWin);
- } else {
- beforeEnd = &window->prevWorkWin;
- }
-
- /* Capture work mask for work that needs to be done to this
- window, then clear the window's work mask (excepting the
- dummy work bit, see below). Then, process the captured
- work mask. This allows callbacks in the processing the
- captured work mask to set the window's work mask for
- subsequent processing. */
-
- workMask = window->workMask;
- assert((workMask & GLUT_DUMMY_WORK) == 0);
-
- /* Set the dummy work bit, clearing all other bits, to
- indicate that the window is currently on the window work
- list _and_ that the window's work mask is currently being
- processed. This convinces __glutPutOnWorkList that this
- window is on the work list still. */
- window->workMask = GLUT_DUMMY_WORK;
-
- /* Optimization: most of the time, the work to do is a
- redisplay and not these other types of work. Check for
- the following cases as a group to before checking each one
- individually one by one. This saves about 25 MIPS
- instructions in the common redisplay only case. */
- if (workMask & (GLUT_EVENT_MASK_WORK | GLUT_DEVICE_MASK_WORK |
- GLUT_CONFIGURE_WORK | GLUT_COLORMAP_WORK | GLUT_MAP_WORK)) {
-
-#if !defined(_WIN32) && !defined(__OS2__)
- /* Be sure to set event mask BEFORE map window is done. */
- if (workMask & GLUT_EVENT_MASK_WORK) {
- long eventMask;
-
- /* Make sure children are not propogating events this
- window is selecting for. Be sure to do this before
- enabling events on the children's parent. */
- if (window->children) {
- GLUTwindow *child = window->children;
- unsigned long attribMask = CWDontPropagate;
- XSetWindowAttributes wa;
-
- wa.do_not_propagate_mask = window->eventMask & GLUT_DONT_PROPAGATE_FILTER_MASK;
- if (window->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK) {
- wa.event_mask = child->eventMask | (window->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK);
- attribMask |= CWEventMask;
- }
- do {
- XChangeWindowAttributes(__glutDisplay, child->win,
- attribMask, &wa);
- child = child->siblings;
- } while (child);
- }
- eventMask = window->eventMask;
- if (window->parent && window->parent->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK)
- eventMask |= (window->parent->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK);
- XSelectInput(__glutDisplay, window->win, eventMask);
- if (window->overlay)
- XSelectInput(__glutDisplay, window->overlay->win,
- window->eventMask & GLUT_OVERLAY_EVENT_FILTER_MASK);
- }
-#endif /* !_WIN32 */
- /* Be sure to set device mask BEFORE map window is done. */
- if (workMask & GLUT_DEVICE_MASK_WORK) {
- __glutUpdateInputDeviceMaskFunc(window);
- }
- /* Be sure to configure window BEFORE map window is done. */
- if (workMask & GLUT_CONFIGURE_WORK) {
-#if defined(__OS2__)
- RECTL changes;
-
-#elif defined(_WIN32)
- RECT changes;
- POINT point;
- UINT flags = SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOOWNERZORDER
- | SWP_NOSENDCHANGING | SWP_NOSIZE | SWP_NOZORDER;
-
- GetClientRect(window->win, &changes);
-
- /* If this window is a toplevel window, translate the 0,0 client
- coordinate into a screen coordinate for proper placement. */
- if (!window->parent) {
- point.x = 0;
- point.y = 0;
- ClientToScreen(window->win, &point);
- changes.left = point.x;
- changes.top = point.y;
- }
- if (window->desiredConfMask & (CWX | CWY)) {
- changes.left = window->desiredX;
- changes.top = window->desiredY;
- flags &= ~SWP_NOMOVE;
- }
- if (window->desiredConfMask & (CWWidth | CWHeight)) {
- changes.right = changes.left + window->desiredWidth;
- changes.bottom = changes.top + window->desiredHeight;
- flags &= ~SWP_NOSIZE;
- /* XXX If overlay exists, resize the overlay here, ie.
- if (window->overlay) ... */
- }
- if (window->desiredConfMask & CWStackMode) {
- flags &= ~SWP_NOZORDER;
- /* XXX Overlay support might require something special here. */
- }
-
- /* Adjust the window rectangle because Win32 thinks that the x, y,
- width & height are the WHOLE window (including decorations),
- whereas GLUT treats the x, y, width & height as only the CLIENT
- area of the window. Only do this to top level windows
- that are not in game mode (since game mode windows do
- not have any decorations). */
- if (!window->parent && window != __glutGameModeWindow) {
- AdjustWindowRect(&changes,
- WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
- FALSE);
- }
-
- /* Do the repositioning, moving, and push/pop. */
- SetWindowPos(window->win,
- window->desiredStack == Above ? HWND_TOP : HWND_NOTOPMOST,
- changes.left, changes.top,
- changes.right - changes.left, changes.bottom - changes.top,
- flags);
-
- /* Zero out the mask. */
- window->desiredConfMask = 0;
-
- /* This hack causes the window to go back to the right position
- when it is taken out of fullscreen mode. */
- if (workMask & GLUT_FULL_SCREEN_WORK) {
- window->desiredConfMask |= CWX | CWY;
- window->desiredX = point.x;
- window->desiredY = point.y;
- }
-#else /* !_WIN32 */
- XWindowChanges changes;
-
- changes.x = window->desiredX;
- changes.y = window->desiredY;
- if (window->desiredConfMask & (CWWidth | CWHeight)) {
- changes.width = window->desiredWidth;
- changes.height = window->desiredHeight;
- if (window->overlay)
- XResizeWindow(__glutDisplay, window->overlay->win,
- window->desiredWidth, window->desiredHeight);
- if (__glutMotifHints != None) {
- if (workMask & GLUT_FULL_SCREEN_WORK) {
- MotifWmHints hints;
-
- hints.flags = MWM_HINTS_DECORATIONS;
- hints.decorations = 0; /* Absolutely no
- decorations. */
- XChangeProperty(__glutDisplay, window->win,
- __glutMotifHints, __glutMotifHints, 32,
- PropModeReplace, (unsigned char *) &hints, 4);
- if (workMask & GLUT_MAP_WORK) {
- /* Handle case where glutFullScreen is called
- before the first time that the window is
- mapped. Some window managers will randomly or
- interactively position the window the first
- time it is mapped if the window's
- WM_NORMAL_HINTS property does not request an
- explicit position. We don't want any such
- window manager interaction when going
- fullscreen. Overwrite the WM_NORMAL_HINTS
- property installed by glutCreateWindow's
- XSetWMProperties property with one explicitly
- requesting a fullscreen window. */
- XSizeHints hints;
-
- hints.flags = USPosition | USSize;
- hints.x = 0;
- hints.y = 0;
- hints.width = window->desiredWidth;
- hints.height = window->desiredHeight;
- XSetWMNormalHints(__glutDisplay, window->win, &hints);
- }
- } else {
- XDeleteProperty(__glutDisplay, window->win, __glutMotifHints);
- }
- }
- }
- if (window->desiredConfMask & CWStackMode) {
- changes.stack_mode = window->desiredStack;
- /* Do not let glutPushWindow push window beneath the
- underlay. */
- if (window->parent && window->parent->overlay
- && window->desiredStack == Below) {
- changes.stack_mode = Above;
- changes.sibling = window->parent->overlay->win;
- window->desiredConfMask |= CWSibling;
- }
- }
- XConfigureWindow(__glutDisplay, window->win,
- window->desiredConfMask, &changes);
- window->desiredConfMask = 0;
-#endif
- }
-#if !defined(_WIN32) && !defined(__OS2__)
- /* Be sure to establish the colormaps BEFORE map window is
- done. */
- if (workMask & GLUT_COLORMAP_WORK) {
- __glutEstablishColormapsProperty(window);
- }
-#endif
- if (workMask & GLUT_MAP_WORK) {
- switch (window->desiredMapState) {
- case WithdrawnState:
- if (window->parent) {
- XUnmapWindow(__glutDisplay, window->win);
- } else {
- XWithdrawWindow(__glutDisplay, window->win,
- __glutScreen);
- }
- window->shownState = 0;
- break;
- case NormalState:
- XMapWindow(__glutDisplay, window->win);
- window->shownState = 1;
- break;
-#ifdef _WIN32
- case GameModeState: /* Not an Xlib value. */
- ShowWindow(window->win, SW_SHOW);
- window->shownState = 1;
- break;
-#endif
- case IconicState:
- XIconifyWindow(__glutDisplay, window->win, __glutScreen);
- window->shownState = 0;
- break;
- }
- }
- }
- if (workMask & (GLUT_REDISPLAY_WORK | GLUT_OVERLAY_REDISPLAY_WORK | GLUT_REPAIR_WORK | GLUT_OVERLAY_REPAIR_WORK)) {
- if (window->forceReshape) {
- /* Guarantee that before a display callback is generated
- for a window, a reshape callback must be generated. */
- __glutSetWindow(window);
- window->reshape(window->width, window->height);
- window->forceReshape = False;
-
- /* Setting the redisplay bit on the first reshape is
- necessary to make the "Mesa glXSwapBuffers to repair
- damage" hack operate correctly. Without indicating a
- redisplay is necessary, there's not an initial back
- buffer render from which to blit from when damage
- happens to the window. */
- workMask |= GLUT_REDISPLAY_WORK;
- }
- /* The code below is more involved than otherwise necessary
- because it is paranoid about the overlay or entire window
- being removed or destroyed in the course of the callbacks.
- Notice how the global __glutWindowDamaged is used to record
- the layers' damage status. See the code in glutLayerGet for
- how __glutWindowDamaged is used. The point is to not have to
- update the "damaged" field after the callback since the
- window (or overlay) may be destroyed (or removed) when the
- callback returns. */
-
- if (window->overlay && window->overlay->display) {
- int num = window->num;
- Window xid = window->overlay ? window->overlay->win : None;
-
- /* If an overlay display callback is registered, we
- differentiate between a redisplay needed for the
- overlay and/or normal plane. If there is no overlay
- display callback registered, we simply use the
- standard display callback. */
-
- if (workMask & (GLUT_REDISPLAY_WORK | GLUT_REPAIR_WORK)) {
- if (__glutMesaSwapHackSupport) {
- if (window->usedSwapBuffers) {
- if ((workMask & (GLUT_REPAIR_WORK | GLUT_REDISPLAY_WORK)) == GLUT_REPAIR_WORK) {
- SWAP_BUFFERS_WINDOW(window);
- goto skippedDisplayCallback1;
- }
- }
- }
- /* Render to normal plane. */
-#ifdef _WIN32
- window->renderDc = window->hdc;
-#endif
- window->renderWin = window->win;
- window->renderCtx = window->ctx;
- __glutWindowDamaged = (workMask & GLUT_REPAIR_WORK);
- __glutSetWindow(window);
- window->usedSwapBuffers = 0;
- window->display();
- __glutWindowDamaged = 0;
-
- skippedDisplayCallback1:;
- }
- if (workMask & (GLUT_OVERLAY_REDISPLAY_WORK | GLUT_OVERLAY_REPAIR_WORK)) {
- window = __glutWindowList[num];
- if (window && window->overlay &&
- window->overlay->win == xid && window->overlay->display) {
-
- /* Render to overlay. */
-#ifdef _WIN32
- window->renderDc = window->overlay->hdc;
-#endif
- window->renderWin = window->overlay->win;
- window->renderCtx = window->overlay->ctx;
- __glutWindowDamaged = (workMask & GLUT_OVERLAY_REPAIR_WORK);
- __glutSetWindow(window);
- window->overlay->display();
- __glutWindowDamaged = 0;
- } else {
- /* Overlay may have since been destroyed or the
- overlay callback may have been disabled during
- normal display callback. */
- }
- }
- } else {
- if (__glutMesaSwapHackSupport) {
- if (!window->overlay && window->usedSwapBuffers) {
- if ((workMask & (GLUT_REPAIR_WORK | GLUT_REDISPLAY_WORK)) == GLUT_REPAIR_WORK) {
- SWAP_BUFFERS_WINDOW(window);
- goto skippedDisplayCallback2;
- }
- }
- }
- /* Render to normal plane (and possibly overlay). */
- __glutWindowDamaged = (workMask & (GLUT_OVERLAY_REPAIR_WORK | GLUT_REPAIR_WORK));
- __glutSetWindow(window);
- window->usedSwapBuffers = 0;
- window->display();
- __glutWindowDamaged = 0;
-
- skippedDisplayCallback2:;
- }
- }
- /* Combine workMask with window->workMask to determine what
- finish and debug work there is. */
- workMask |= window->workMask;
-
- if (workMask & GLUT_FINISH_WORK) {
- /* Finish work makes sure a glFinish gets done to indirect
- rendering contexts. Indirect contexts tend to have much
- longer latency because lots of OpenGL extension requests
- can queue up in the X protocol stream. __glutSetWindow
- is where the finish works gets queued for indirect
- contexts. */
- __glutSetWindow(window);
- glFinish();
- }
- if (workMask & GLUT_DEBUG_WORK) {
- __glutSetWindow(window);
- glutReportErrors();
- }
- /* Strip out dummy, finish, and debug work bits. */
- window->workMask &= ~(GLUT_DUMMY_WORK | GLUT_FINISH_WORK | GLUT_DEBUG_WORK);
- if (window->workMask) {
- /* Leave on work list. */
- return window;
- } else {
- /* Remove current window from work list. */
- return window->prevWorkWin;
- }
-}
-
-#ifndef _WIN32
-static /* X11 implementations do not need this global. */
-#endif
-void
-__glutProcessWindowWorkLists(void)
-{
- if (__glutWindowWorkList) {
- GLUTwindow *remainder, *work;
-
- work = __glutWindowWorkList;
- __glutWindowWorkList = NULL;
- if (work) {
- remainder = processWindowWorkList(work);
- if (remainder) {
- *beforeEnd = __glutWindowWorkList;
- __glutWindowWorkList = remainder;
- }
- }
- }
-}
-
-/* CENTRY */
-void GLUTAPIENTRY
-glutMainLoop(void)
-{
-#if !defined(_WIN32)
- if (!__glutDisplay)
- __glutFatalUsage("main loop entered with out proper initialization.");
-#endif
- if (!__glutWindowListSize)
- __glutFatalUsage(
- "main loop entered with no windows created.");
- for (;;) {
- __glutProcessWindowWorkLists();
- if (__glutIdleFunc || __glutWindowWorkList) {
- idleWait();
- } else {
- if (__glutTimerList) {
- waitForSomething();
- } else {
- processEventsAndTimeouts();
- }
- }
- }
-}
-/* ENDCENTRY */
+/* glut_event.c */ +/* Copyright (c) Mark J. Kilgard, 1994, 1995, 1996, 1997, 1998. */ + +/* This program is freely distributable without licensing fees + and is provided without guarantee or warrantee expressed or + implied. This program is -not- in the public domain. */ + +#ifdef __VMS +#include <GL/vms_x_fix.h> +#endif + +#include <stdlib.h> +#include <stdio.h> +#include <errno.h> +#include <assert.h> +#include <string.h> /* Some FD_ZERO macros use memset without + prototyping memset. */ + +/* Much of the following #ifdef logic to include the proper + prototypes for the select system call is based on logic + from the X11R6.3 version of <X11/Xpoll.h>. */ + +#if !defined(_WIN32) +# ifdef __sgi +# include <bstring.h> /* prototype for bzero used by FD_ZERO */ +# endif +# if (defined(SVR4) || defined(CRAY) || defined(AIXV3)) && !defined(FD_SETSIZE) +# include <sys/select.h> /* select system call interface */ +# ifdef luna +# include <sysent.h> +# endif +# endif + /* AIX 4.2 fubar-ed <sys/select.h>, so go to heroic measures to get it */ +# if defined(AIXV4) && !defined(NFDBITS) +# include <sys/select.h> +# endif +#endif /* !_WIN32 */ + +#include <sys/types.h> + +#if defined(__OS2__) +//??? 䨣 ?? # include <sys/time.h> +#elif !defined(_WIN32) +# if defined(__vms) && ( __VMS_VER < 70000000 ) +# include <sys/time.h> +# else +# ifndef __vms +# include <sys/time.h> +# endif +# endif +# include <unistd.h> +# include <X11/Xlib.h> +# include <X11/keysym.h> +#else +# ifdef __CYGWIN32__ +# include <sys/time.h> +# else +# include <sys/timeb.h> +# endif +# ifdef __hpux + /* XXX Bert Gijsbers <bert@mc.bio.uva.nl> reports that HP-UX + needs different keysyms for the End, Insert, and Delete keys + to work on an HP 715. It would be better if HP generated + standard keysyms for standard keys. */ +# include <X11/HPkeysym.h> +# endif +#endif /* !_WIN32 */ + +#include "glutint.h" + +#if defined(__vms) && ( __VMS_VER < 70000000 ) +#include <ssdef.h> +#include <psldef.h> +extern int SYS$CLREF(int efn); +extern int SYS$SETIMR(unsigned int efn, struct timeval6 *timeout, void *ast, + unsigned int request_id, unsigned int flags); +extern int SYS$WFLOR(unsigned int efn, unsigned int mask); +extern int SYS$CANTIM(unsigned int request_id, unsigned int mode); +#endif /* __vms, VMs 6.2 or earlier */ + +static GLUTtimer *freeTimerList = NULL; + +GLUTidleCB __glutIdleFunc = NULL; +GLUTtimer *__glutTimerList = NULL; +#ifdef SUPPORT_FORTRAN +GLUTtimer *__glutNewTimer; +#endif +GLUTwindow *__glutWindowWorkList = NULL; +GLUTmenu *__glutMappedMenu; +GLUTmenu *__glutCurrentMenu = NULL; + +void (*__glutUpdateInputDeviceMaskFunc) (GLUTwindow *); +#if !defined(_WIN32) && !defined(__OS2__) +void (*__glutMenuItemEnterOrLeave)(GLUTmenuItem * item, int num, int type) = NULL; +void (*__glutFinishMenu)(Window win, int x, int y); +void (*__glutPaintMenu)(GLUTmenu * menu); +void (*__glutStartMenu)(GLUTmenu * menu, GLUTwindow * window, int x, int y, int x_win, int y_win); +GLUTmenu * (*__glutGetMenuByNum)(int menunum); +GLUTmenuItem * (*__glutGetMenuItem)(GLUTmenu * menu, Window win, int *which); +GLUTmenu * (*__glutGetMenu)(Window win); +#endif + +Atom __glutMotifHints = None; +/* Modifier mask of ~0 implies not in core input callback. */ +unsigned int __glutModifierMask = (unsigned int) ~0; +int __glutWindowDamaged = 0; + +void GLUTAPIENTRY +glutIdleFunc(GLUTidleCB idleFunc) +{ + __glutIdleFunc = idleFunc; +} + +void GLUTAPIENTRY +glutTimerFunc(unsigned int interval, GLUTtimerCB timerFunc, int value) +{ + GLUTtimer *timer, *other; + GLUTtimer **prevptr; +#ifdef OLD_VMS + struct timeval6 now; +#else + struct timeval now; +#endif + + if (!timerFunc) + return; + + if (freeTimerList) { + timer = freeTimerList; + freeTimerList = timer->next; + } else { + timer = (GLUTtimer *) malloc(sizeof(GLUTtimer)); + if (!timer) + __glutFatalError("out of memory."); + } + + timer->func = timerFunc; +#if defined(__vms) && ( __VMS_VER < 70000000 ) + /* VMS time is expressed in units of 100 ns */ + timer->timeout.val = interval * TICKS_PER_MILLISECOND; +#else + timer->timeout.tv_sec = (int) interval / 1000; + timer->timeout.tv_usec = (int) (interval % 1000) * 1000; +#endif + timer->value = value; + timer->next = NULL; + GETTIMEOFDAY(&now); + ADD_TIME(timer->timeout, timer->timeout, now); + prevptr = &__glutTimerList; + other = *prevptr; + while (other && IS_AFTER(other->timeout, timer->timeout)) { + prevptr = &other->next; + other = *prevptr; + } + timer->next = other; +#ifdef SUPPORT_FORTRAN + __glutNewTimer = timer; /* for Fortran binding! */ +#endif + *prevptr = timer; +} + +void +handleTimeouts(void) +{ +#ifdef OLD_VMS + struct timeval6 now; +#else + struct timeval now; +#endif + GLUTtimer *timer; + + /* Assumption is that __glutTimerList is already determined + to be non-NULL. */ + GETTIMEOFDAY(&now); + while (IS_AT_OR_AFTER(__glutTimerList->timeout, now)) { + timer = __glutTimerList; + timer->func(timer->value); + __glutTimerList = timer->next; + timer->next = freeTimerList; + freeTimerList = timer; + if (!__glutTimerList) + break; + } +} + +void +__glutPutOnWorkList(GLUTwindow * window, int workMask) +{ + if (window->workMask) { + /* Already on list; just OR in new workMask. */ + window->workMask |= workMask; + } else { + /* Update work mask and add to window work list. */ + window->workMask = workMask; + /* Assert that if the window does not have a + workMask already, the window should definitely + not be the head of the work list. */ + assert(window != __glutWindowWorkList); + window->prevWorkWin = __glutWindowWorkList; + __glutWindowWorkList = window; + } +} + +void +__glutPostRedisplay(GLUTwindow * window, int layerMask) +{ + int shown = (layerMask & (GLUT_REDISPLAY_WORK | GLUT_REPAIR_WORK)) ? + window->shownState : window->overlay->shownState; + + /* Post a redisplay if the window is visible (or the + visibility of the window is unknown, ie. window->visState + == -1) _and_ the layer is known to be shown. */ + if (window->visState != GLUT_HIDDEN + && window->visState != GLUT_FULLY_COVERED && shown) { + __glutPutOnWorkList(window, layerMask); + } +} + +/* CENTRY */ +void GLUTAPIENTRY +glutPostRedisplay(void) +{ + __glutPostRedisplay(__glutCurrentWindow, GLUT_REDISPLAY_WORK); +} + +/* The advantage of this routine is that it saves the cost of a + glutSetWindow call (entailing an expensive OpenGL context switch), + particularly useful when multiple windows need redisplays posted at + the same times. See also glutPostWindowOverlayRedisplay. */ +void GLUTAPIENTRY +glutPostWindowRedisplay(int win) +{ + __glutPostRedisplay(__glutWindowList[win - 1], GLUT_REDISPLAY_WORK); +} + +/* ENDCENTRY */ +static GLUTeventParser *eventParserList = NULL; + +/* __glutRegisterEventParser allows another module to register + to intercept X events types not otherwise acted on by the + GLUT processEventsAndTimeouts routine. The X Input + extension support code uses an event parser for handling X + Input extension events. */ + +void +__glutRegisterEventParser(GLUTeventParser * parser) +{ + parser->next = eventParserList; + eventParserList = parser; +} + +static void +markWindowHidden(GLUTwindow * window) +{ + if (GLUT_HIDDEN != window->visState) { + GLUTwindow *child; + + if (window->windowStatus) { + window->visState = GLUT_HIDDEN; + __glutSetWindow(window); + window->windowStatus(GLUT_HIDDEN); + } + /* An unmap is only reported on a single window; its + descendents need to know they are no longer visible. */ + child = window->children; + while (child) { + markWindowHidden(child); + child = child->siblings; + } + } +} + +#if !defined(_WIN32) && !defined(__OS2__) + +static void +purgeStaleWindow(Window win) +{ + GLUTstale **pEntry = &__glutStaleWindowList; + GLUTstale *entry = __glutStaleWindowList; + + /* Tranverse singly-linked stale window list look for the + window ID. */ + while (entry) { + if (entry->win == win) { + /* Found it; delete it. */ + *pEntry = entry->next; + free(entry); + return; + } else { + pEntry = &entry->next; + entry = *pEntry; + } + } +} + +/* Unlike XNextEvent, if a signal arrives, + interruptibleXNextEvent will return (with a zero return + value). This helps GLUT drop out of XNextEvent if a signal + is delivered. The intent is so that a GLUT program can call + glutIdleFunc in a signal handler to register an idle func + and then immediately get dropped into the idle func (after + returning from the signal handler). The idea is to make + GLUT's main loop reliably interruptible by signals. */ +static int +interruptibleXNextEvent(Display * dpy, XEvent * event) +{ + fd_set fds; + int rc; + + /* Flush X protocol since XPending does not do this + implicitly. */ + XFlush(__glutDisplay); + for (;;) { + if (XPending(__glutDisplay)) { + XNextEvent(dpy, event); + return 1; + } +#ifndef VMS + /* the combination ConectionNumber-select is buggy on VMS. Sometimes it + * fails. This part of the code hangs the program on VMS7.2. But even + * without it the program seems to run correctly. + * Note that this is a bug in the VMS/DECWindows run-time-libraries. + * Compaq engeneering does not want or is not able to make a fix. + * (last sentence is a quotation from Compaq when I reported the + * problem January 2000) */ + FD_ZERO(&fds); + FD_SET(__glutConnectionFD, &fds); + rc = select(__glutConnectionFD + 1, &fds, NULL, NULL, NULL); + if (rc < 0) { + if (errno == EINTR) { + return 0; + } else { + __glutFatalError("select error."); + } + } +#endif + } +} + +#endif + +static void +processEventsAndTimeouts(void) +{ + do { +#if defined(__OS2__) + QMSG qmsg; /* message from message queue */ + extern HAB hab; /* PM anchor block handle */ + + if(! WinGetMsg( hab, &qmsg, 0UL, 0UL, 0UL ) ) + exit(0); + WinDispatchMsg( hab, /* PM anchor block handle */ + &qmsg ); /* pointer to message */ + +#elif defined(_WIN32) + MSG event; + + if(!GetMessage(&event, NULL, 0, 0)) /* bail if no more messages */ + exit(0); + TranslateMessage(&event); /* translate virtual-key messages */ + DispatchMessage(&event); /* call the window proc */ + /* see win32_event.c for event (message) processing procedures */ +#else + static int mappedMenuButton; + GLUTeventParser *parser; + XEvent event, ahead; + GLUTwindow *window; + GLUTkeyboardCB keyboard; + GLUTspecialCB special; + int gotEvent, width, height; + + gotEvent = interruptibleXNextEvent(__glutDisplay, &event); + if (gotEvent) { + switch (event.type) { + case MappingNotify: + XRefreshKeyboardMapping((XMappingEvent *) & event); + break; + case ConfigureNotify: + window = __glutGetWindow(event.xconfigure.window); + if (window) { + if (window->win != event.xconfigure.window) { + /* Ignore ConfigureNotify sent to the overlay + planes. GLUT could get here because overlays + select for StructureNotify events to receive + DestroyNotify. */ + break; + } + width = event.xconfigure.width; + height = event.xconfigure.height; + if (width != window->width || height != window->height) { + if (window->overlay) { + XResizeWindow(__glutDisplay, window->overlay->win, width, height); + } + window->width = width; + window->height = height; + __glutSetWindow(window); + /* Do not execute OpenGL out of sequence with + respect to the XResizeWindow request! */ + glXWaitX(); + window->reshape(width, height); + window->forceReshape = False; + /* A reshape should be considered like posting a + repair; this is necessary for the "Mesa + glXSwapBuffers to repair damage" hack to operate + correctly. Without it, there's not an initial + back buffer render from which to blit from when + damage happens to the window. */ + __glutPostRedisplay(window, GLUT_REPAIR_WORK); + } + } + break; + case Expose: + /* compress expose events */ + while (XEventsQueued(__glutDisplay, QueuedAfterReading) + > 0) { + XPeekEvent(__glutDisplay, &ahead); + if (ahead.type != Expose || + ahead.xexpose.window != event.xexpose.window) { + break; + } + XNextEvent(__glutDisplay, &event); + } + if (event.xexpose.count == 0) { + GLUTmenu *menu; + + if (__glutMappedMenu && + (menu = __glutGetMenu(event.xexpose.window))) { + __glutPaintMenu(menu); + } else { + window = __glutGetWindow(event.xexpose.window); + if (window) { + if (window->win == event.xexpose.window) { + __glutPostRedisplay(window, GLUT_REPAIR_WORK); + } else if (window->overlay && window->overlay->win == event.xexpose.window) { + __glutPostRedisplay(window, GLUT_OVERLAY_REPAIR_WORK); + } + } + } + } else { + /* there are more exposes to read; wait to redisplay */ + } + break; + case ButtonPress: + case ButtonRelease: + if (__glutMappedMenu && event.type == ButtonRelease + && mappedMenuButton == event.xbutton.button) { + /* Menu is currently popped up and its button is + released. */ + __glutFinishMenu(event.xbutton.window, event.xbutton.x, event.xbutton.y); + } else { + window = __glutGetWindow(event.xbutton.window); + if (window) { + GLUTmenu *menu; + int menuNum; + + menuNum = window->menu[event.xbutton.button - 1]; + /* Make sure that __glutGetMenuByNum is only called if there + really is a menu present. */ + if ((menuNum > 0) && (menu = __glutGetMenuByNum(menuNum))) { + if (event.type == ButtonPress && !__glutMappedMenu) { + __glutStartMenu(menu, window, + event.xbutton.x_root, event.xbutton.y_root, + event.xbutton.x, event.xbutton.y); + mappedMenuButton = event.xbutton.button; + } else { + /* Ignore a release of a button with a menu + attatched to it when no menu is popped up, + or ignore a press when another menu is + already popped up. */ + } + } else if (window->mouse) { + __glutSetWindow(window); + __glutModifierMask = event.xbutton.state; + window->mouse(event.xbutton.button - 1, + event.type == ButtonRelease ? + GLUT_UP : GLUT_DOWN, + event.xbutton.x, event.xbutton.y); + __glutModifierMask = ~0; + } else { + /* Stray mouse events. Ignore. */ + } + } else { + /* Window might have been destroyed and all the + events for the window may not yet be received. */ + } + } + break; + case MotionNotify: + if (!__glutMappedMenu) { + window = __glutGetWindow(event.xmotion.window); + if (window) { + /* If motion function registered _and_ buttons held + * down, call motion function... */ + if (window->motion && event.xmotion.state & + (Button1Mask | Button2Mask | Button3Mask)) { + __glutSetWindow(window); + window->motion(event.xmotion.x, event.xmotion.y); + } + /* If passive motion function registered _and_ + buttons not held down, call passive motion + function... */ + else if (window->passive && + ((event.xmotion.state & + (Button1Mask | Button2Mask | Button3Mask)) == + 0)) { + __glutSetWindow(window); + window->passive(event.xmotion.x, + event.xmotion.y); + } + } + } else { + /* Motion events are thrown away when a pop up menu + is active. */ + } + break; + case KeyPress: + case KeyRelease: + window = __glutGetWindow(event.xkey.window); + if (!window) { + break; + } + if (event.type == KeyPress) { + keyboard = window->keyboard; + } else { + + /* If we are ignoring auto repeated keys for this window, + check if the next event in the X event queue is a KeyPress + for the exact same key (and at the exact same time) as the + key being released. The X11 protocol will send auto + repeated keys as such KeyRelease/KeyPress pairs. */ + + if (window->ignoreKeyRepeat) { + if (XEventsQueued(__glutDisplay, QueuedAfterReading)) { + XPeekEvent(__glutDisplay, &ahead); + if (ahead.type == KeyPress + && ahead.xkey.window == event.xkey.window + && ahead.xkey.keycode == event.xkey.keycode + && ahead.xkey.time == event.xkey.time) { + /* Pop off the repeated KeyPress and ignore + the auto repeated KeyRelease/KeyPress pair. */ + XNextEvent(__glutDisplay, &event); + break; + } + } + } + keyboard = window->keyboardUp; + } + if (keyboard) { + char tmp[1]; + int rc; + + rc = XLookupString(&event.xkey, tmp, sizeof(tmp), + NULL, NULL); + if (rc) { + __glutSetWindow(window); + __glutModifierMask = event.xkey.state; + keyboard(tmp[0], + event.xkey.x, event.xkey.y); + __glutModifierMask = ~0; + break; + } + } + if (event.type == KeyPress) { + special = window->special; + } else { + special = window->specialUp; + } + if (special) { + KeySym ks; + int key; + +/* Introduced in X11R6: (Partial list of) Keypad Functions. Define + in place in case compiling against an older pre-X11R6 + X11/keysymdef.h file. */ +#ifndef XK_KP_Home +#define XK_KP_Home 0xFF95 +#endif +#ifndef XK_KP_Left +#define XK_KP_Left 0xFF96 +#endif +#ifndef XK_KP_Up +#define XK_KP_Up 0xFF97 +#endif +#ifndef XK_KP_Right +#define XK_KP_Right 0xFF98 +#endif +#ifndef XK_KP_Down +#define XK_KP_Down 0xFF99 +#endif +#ifndef XK_KP_Prior +#define XK_KP_Prior 0xFF9A +#endif +#ifndef XK_KP_Next +#define XK_KP_Next 0xFF9B +#endif +#ifndef XK_KP_End +#define XK_KP_End 0xFF9C +#endif +#ifndef XK_KP_Insert +#define XK_KP_Insert 0xFF9E +#endif +#ifndef XK_KP_Delete +#define XK_KP_Delete 0xFF9F +#endif + + ks = XLookupKeysym((XKeyEvent *) & event, 0); + /* XXX Verbose, but makes no assumptions about keysym + layout. */ + switch (ks) { +/* *INDENT-OFF* */ + /* function keys */ + case XK_F1: key = GLUT_KEY_F1; break; + case XK_F2: key = GLUT_KEY_F2; break; + case XK_F3: key = GLUT_KEY_F3; break; + case XK_F4: key = GLUT_KEY_F4; break; + case XK_F5: key = GLUT_KEY_F5; break; + case XK_F6: key = GLUT_KEY_F6; break; + case XK_F7: key = GLUT_KEY_F7; break; + case XK_F8: key = GLUT_KEY_F8; break; + case XK_F9: key = GLUT_KEY_F9; break; + case XK_F10: key = GLUT_KEY_F10; break; + case XK_F11: key = GLUT_KEY_F11; break; + case XK_F12: key = GLUT_KEY_F12; break; + /* directional keys */ + case XK_KP_Left: + case XK_Left: key = GLUT_KEY_LEFT; break; + case XK_KP_Up: /* Introduced in X11R6. */ + case XK_Up: key = GLUT_KEY_UP; break; + case XK_KP_Right: /* Introduced in X11R6. */ + case XK_Right: key = GLUT_KEY_RIGHT; break; + case XK_KP_Down: /* Introduced in X11R6. */ + case XK_Down: key = GLUT_KEY_DOWN; break; +/* *INDENT-ON* */ + + case XK_KP_Prior: /* Introduced in X11R6. */ + case XK_Prior: + /* XK_Prior same as X11R6's XK_Page_Up */ + key = GLUT_KEY_PAGE_UP; + break; + case XK_KP_Next: /* Introduced in X11R6. */ + case XK_Next: + /* XK_Next same as X11R6's XK_Page_Down */ + key = GLUT_KEY_PAGE_DOWN; + break; + case XK_KP_Home: /* Introduced in X11R6. */ + case XK_Home: + key = GLUT_KEY_HOME; + break; +#ifdef __hpux + case XK_Select: +#endif + case XK_KP_End: /* Introduced in X11R6. */ + case XK_End: + key = GLUT_KEY_END; + break; +#ifdef __hpux + case XK_InsertChar: +#endif + case XK_KP_Insert: /* Introduced in X11R6. */ + case XK_Insert: + key = GLUT_KEY_INSERT; + break; +#ifdef __hpux + case XK_DeleteChar: +#endif + case XK_KP_Delete: /* Introduced in X11R6. */ + /* The Delete character is really an ASCII key. */ + __glutSetWindow(window); + keyboard(127, /* ASCII Delete character. */ + event.xkey.x, event.xkey.y); + goto skip; + default: + goto skip; + } + __glutSetWindow(window); + __glutModifierMask = event.xkey.state; + special(key, event.xkey.x, event.xkey.y); + __glutModifierMask = ~0; + skip:; + } + break; + case EnterNotify: + case LeaveNotify: + if (event.xcrossing.mode != NotifyNormal || + event.xcrossing.detail == NotifyNonlinearVirtual || + event.xcrossing.detail == NotifyVirtual) { + + /* Careful to ignore Enter/LeaveNotify events that + come from the pop-up menu pointer grab and ungrab. + Also, ignore "virtual" Enter/LeaveNotify events + since they represent the pointer passing through + the window hierarchy without actually entering or + leaving the actual real estate of a window. */ + + break; + } + if (__glutMappedMenu) { + GLUTmenuItem *item; + int num; + + item = __glutGetMenuItem(__glutMappedMenu, + event.xcrossing.window, &num); + if (item) { + __glutMenuItemEnterOrLeave(item, num, event.type); + break; + } + } + window = __glutGetWindow(event.xcrossing.window); + if (window) { + if (window->entry) { + if (event.type == EnterNotify) { + + /* With overlays established, X can report two + enter events for both the overlay and normal + plane window. Do not generate a second enter + callback if we reported one without an + intervening leave. */ + + if (window->entryState != EnterNotify) { + int num = window->num; + Window xid = window->win; + + window->entryState = EnterNotify; + __glutSetWindow(window); + window->entry(GLUT_ENTERED); + + if (__glutMappedMenu) { + + /* Do not generate any passive motion events + when menus are in use. */ + + } else { + + /* An EnterNotify event can result in a + "compound" callback if a passive motion + callback is also registered. In this case, + be a little paranoid about the possibility + the window could have been destroyed in the + entry callback. */ + + window = __glutWindowList[num]; + if (window && window->passive && window->win == xid) { + __glutSetWindow(window); + window->passive(event.xcrossing.x, event.xcrossing.y); + } + } + } + } else { + if (window->entryState != LeaveNotify) { + + /* When an overlay is established for a window + already mapped and with the pointer in it, + the X server will generate a leave/enter + event pair as the pointer leaves (without + moving) from the normal plane X window to + the newly mapped overlay X window (or vice + versa). This enter/leave pair should not be + reported to the GLUT program since the pair + is a consequence of creating (or destroying) + the overlay, not an actual leave from the + GLUT window. */ + + if (XEventsQueued(__glutDisplay, QueuedAfterReading)) { + XPeekEvent(__glutDisplay, &ahead); + if (ahead.type == EnterNotify && + __glutGetWindow(ahead.xcrossing.window) == window) { + XNextEvent(__glutDisplay, &event); + break; + } + } + window->entryState = LeaveNotify; + __glutSetWindow(window); + window->entry(GLUT_LEFT); + } + } + } else if (window->passive) { + __glutSetWindow(window); + window->passive(event.xcrossing.x, event.xcrossing.y); + } + } + break; + case UnmapNotify: + /* MapNotify events are not needed to maintain + visibility state since VisibilityNotify events will + be delivered when a window becomes visible from + mapping. However, VisibilityNotify events are not + delivered when a window is unmapped (for the window + or its children). */ + window = __glutGetWindow(event.xunmap.window); + if (window) { + if (window->win != event.xconfigure.window) { + /* Ignore UnmapNotify sent to the overlay planes. + GLUT could get here because overlays select for + StructureNotify events to receive DestroyNotify. + */ + break; + } + markWindowHidden(window); + } + break; + case VisibilityNotify: + window = __glutGetWindow(event.xvisibility.window); + if (window) { + /* VisibilityUnobscured+1 = GLUT_FULLY_RETAINED, + VisibilityPartiallyObscured+1 = + GLUT_PARTIALLY_RETAINED, VisibilityFullyObscured+1 + = GLUT_FULLY_COVERED. */ + int visState = event.xvisibility.state + 1; + + if (visState != window->visState) { + if (window->windowStatus) { + window->visState = visState; + __glutSetWindow(window); + window->windowStatus(visState); + } + } + } + break; + case ClientMessage: + if (event.xclient.data.l[0] == __glutWMDeleteWindow) + exit(0); + break; + case DestroyNotify: + purgeStaleWindow(event.xdestroywindow.window); + break; + case CirculateNotify: + case CreateNotify: + case GravityNotify: + case ReparentNotify: + /* Uninteresting to GLUT (but possible for GLUT to + receive). */ + break; + default: + /* Pass events not directly handled by the GLUT main + event loop to any event parsers that have been + registered. In this way, X Input extension events + are passed to the correct handler without forcing + all GLUT programs to support X Input event handling. + */ + parser = eventParserList; + while (parser) { + if (parser->func(&event)) + break; + parser = parser->next; + } + break; + } + } +#endif /* _WIN32 */ + if (__glutTimerList) { + handleTimeouts(); + } + } + while (XPending(__glutDisplay)); +} + +static void +waitForSomething(void) +{ +#if defined(__vms) && ( __VMS_VER < 70000000 ) + static struct timeval6 zerotime = + {0}; + unsigned int timer_efn; +#define timer_id 'glut' /* random :-) number */ + unsigned int wait_mask; +#else + static struct timeval zerotime = + {0, 0}; +#if defined(__OS2__) + +#elif !defined(_WIN32) + fd_set fds; +#endif +#endif +#ifdef OLD_VMS + struct timeval6 now, timeout, waittime; +#else + struct timeval now, timeout, waittime; +#endif +#if !defined(_WIN32) + int rc; +#endif + + /* Flush X protocol since XPending does not do this + implicitly. */ + XFlush(__glutDisplay); + if (XPending(__glutDisplay)) { + /* It is possible (but quite rare) that XFlush may have + needed to wait for a writable X connection file + descriptor, and in the process, may have had to read off + X protocol from the file descriptor. If XPending is true, + this case occured and we should avoid waiting in select + since X protocol buffered within Xlib is due to be + processed and potentially no more X protocol is on the + file descriptor, so we would risk waiting improperly in + select. */ + goto immediatelyHandleXinput; + } +#if defined(__vms) && ( __VMS_VER < 70000000 ) + timeout = __glutTimerList->timeout; + GETTIMEOFDAY(&now); + wait_mask = 1 << (__glutConnectionFD & 31); + if (IS_AFTER(now, timeout)) { + /* We need an event flag for the timer. */ + /* XXX The `right' way to do this is to use LIB$GET_EF, but + since it needs to be in the same cluster as the EFN for + the display, we will have hack it. */ + timer_efn = __glutConnectionFD - 1; + if ((timer_efn / 32) != (__glutConnectionFD / 32)) { + timer_efn = __glutConnectionFD + 1; + } + rc = SYS$CLREF(timer_efn); + rc = SYS$SETIMR(timer_efn, &timeout, NULL, timer_id, 0); + wait_mask |= 1 << (timer_efn & 31); + } else { + timer_efn = 0; + } + rc = SYS$WFLOR(__glutConnectionFD, wait_mask); + if (timer_efn != 0 && SYS$CLREF(timer_efn) == SS$_WASCLR) { + rc = SYS$CANTIM(timer_id, PSL$C_USER); + } + /* XXX There does not seem to be checking of "rc" in the code + above. Can any of the SYS$ routines above fail? */ +#else /* not vms6.2 or lower */ +#if defined(__OS2__) + +#elif !defined(_WIN32) + FD_ZERO(&fds); + FD_SET(__glutConnectionFD, &fds); +#endif + timeout = __glutTimerList->timeout; + GETTIMEOFDAY(&now); + if (IS_AFTER(now, timeout)) { + TIMEDELTA(waittime, timeout, now); + } else { + waittime = zerotime; + } + +#if defined(__OS2__) + DosSleep(0); +#elif !defined(_WIN32) + rc = select(__glutConnectionFD + 1, &fds, + NULL, NULL, &waittime); + if (rc < 0 && errno != EINTR) + __glutFatalError("select error."); +#else + + MsgWaitForMultipleObjects(0, NULL, FALSE, + waittime.tv_sec*1000 + waittime.tv_usec/1000, QS_ALLINPUT); + +#endif +#endif /* not vms6.2 or lower */ + /* Without considering the cause of select unblocking, check + for pending X events and handle any timeouts (by calling + processEventsAndTimeouts). We always look for X events + even if select returned with 0 (indicating a timeout); + otherwise we risk starving X event processing by continous + timeouts. */ + if (XPending(__glutDisplay)) { + immediatelyHandleXinput: + processEventsAndTimeouts(); + } else { + if (__glutTimerList) + handleTimeouts(); + } +} + +static void +idleWait(void) +{ + if (XPending(__glutDisplay)) { + processEventsAndTimeouts(); + } else { + if (__glutTimerList) { + handleTimeouts(); + } + } + /* Make sure idle func still exists! */ + if (__glutIdleFunc) { + __glutIdleFunc(); + } +} + +static GLUTwindow **beforeEnd; + +static GLUTwindow * +processWindowWorkList(GLUTwindow * window) +{ + int workMask; + + if (window->prevWorkWin) { + window->prevWorkWin = processWindowWorkList(window->prevWorkWin); + } else { + beforeEnd = &window->prevWorkWin; + } + + /* Capture work mask for work that needs to be done to this + window, then clear the window's work mask (excepting the + dummy work bit, see below). Then, process the captured + work mask. This allows callbacks in the processing the + captured work mask to set the window's work mask for + subsequent processing. */ + + workMask = window->workMask; + assert((workMask & GLUT_DUMMY_WORK) == 0); + + /* Set the dummy work bit, clearing all other bits, to + indicate that the window is currently on the window work + list _and_ that the window's work mask is currently being + processed. This convinces __glutPutOnWorkList that this + window is on the work list still. */ + window->workMask = GLUT_DUMMY_WORK; + + /* Optimization: most of the time, the work to do is a + redisplay and not these other types of work. Check for + the following cases as a group to before checking each one + individually one by one. This saves about 25 MIPS + instructions in the common redisplay only case. */ + if (workMask & (GLUT_EVENT_MASK_WORK | GLUT_DEVICE_MASK_WORK | + GLUT_CONFIGURE_WORK | GLUT_COLORMAP_WORK | GLUT_MAP_WORK)) { + +#if !defined(_WIN32) && !defined(__OS2__) + /* Be sure to set event mask BEFORE map window is done. */ + if (workMask & GLUT_EVENT_MASK_WORK) { + long eventMask; + + /* Make sure children are not propogating events this + window is selecting for. Be sure to do this before + enabling events on the children's parent. */ + if (window->children) { + GLUTwindow *child = window->children; + unsigned long attribMask = CWDontPropagate; + XSetWindowAttributes wa; + + wa.do_not_propagate_mask = window->eventMask & GLUT_DONT_PROPAGATE_FILTER_MASK; + if (window->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK) { + wa.event_mask = child->eventMask | (window->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK); + attribMask |= CWEventMask; + } + do { + XChangeWindowAttributes(__glutDisplay, child->win, + attribMask, &wa); + child = child->siblings; + } while (child); + } + eventMask = window->eventMask; + if (window->parent && window->parent->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK) + eventMask |= (window->parent->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK); + XSelectInput(__glutDisplay, window->win, eventMask); + if (window->overlay) + XSelectInput(__glutDisplay, window->overlay->win, + window->eventMask & GLUT_OVERLAY_EVENT_FILTER_MASK); + } +#endif /* !_WIN32 */ + /* Be sure to set device mask BEFORE map window is done. */ + if (workMask & GLUT_DEVICE_MASK_WORK) { + __glutUpdateInputDeviceMaskFunc(window); + } + /* Be sure to configure window BEFORE map window is done. */ + if (workMask & GLUT_CONFIGURE_WORK) { +#if defined(__OS2__) + RECTL changes; + +#elif defined(_WIN32) + RECT changes; + POINT point; + UINT flags = SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOOWNERZORDER + | SWP_NOSENDCHANGING | SWP_NOSIZE | SWP_NOZORDER; + + GetClientRect(window->win, &changes); + + /* If this window is a toplevel window, translate the 0,0 client + coordinate into a screen coordinate for proper placement. */ + if (!window->parent) { + point.x = 0; + point.y = 0; + ClientToScreen(window->win, &point); + changes.left = point.x; + changes.top = point.y; + } + if (window->desiredConfMask & (CWX | CWY)) { + changes.left = window->desiredX; + changes.top = window->desiredY; + flags &= ~SWP_NOMOVE; + } + if (window->desiredConfMask & (CWWidth | CWHeight)) { + changes.right = changes.left + window->desiredWidth; + changes.bottom = changes.top + window->desiredHeight; + flags &= ~SWP_NOSIZE; + /* XXX If overlay exists, resize the overlay here, ie. + if (window->overlay) ... */ + } + if (window->desiredConfMask & CWStackMode) { + flags &= ~SWP_NOZORDER; + /* XXX Overlay support might require something special here. */ + } + + /* Adjust the window rectangle because Win32 thinks that the x, y, + width & height are the WHOLE window (including decorations), + whereas GLUT treats the x, y, width & height as only the CLIENT + area of the window. Only do this to top level windows + that are not in game mode (since game mode windows do + not have any decorations). */ + if (!window->parent && window != __glutGameModeWindow) { + AdjustWindowRect(&changes, + WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, + FALSE); + } + + /* Do the repositioning, moving, and push/pop. */ + SetWindowPos(window->win, + window->desiredStack == Above ? HWND_TOP : HWND_NOTOPMOST, + changes.left, changes.top, + changes.right - changes.left, changes.bottom - changes.top, + flags); + + /* Zero out the mask. */ + window->desiredConfMask = 0; + + /* This hack causes the window to go back to the right position + when it is taken out of fullscreen mode. */ + if (workMask & GLUT_FULL_SCREEN_WORK) { + window->desiredConfMask |= CWX | CWY; + window->desiredX = point.x; + window->desiredY = point.y; + } +#else /* !_WIN32 */ + XWindowChanges changes; + + changes.x = window->desiredX; + changes.y = window->desiredY; + if (window->desiredConfMask & (CWWidth | CWHeight)) { + changes.width = window->desiredWidth; + changes.height = window->desiredHeight; + if (window->overlay) + XResizeWindow(__glutDisplay, window->overlay->win, + window->desiredWidth, window->desiredHeight); + if (__glutMotifHints != None) { + if (workMask & GLUT_FULL_SCREEN_WORK) { + MotifWmHints hints; + + hints.flags = MWM_HINTS_DECORATIONS; + hints.decorations = 0; /* Absolutely no + decorations. */ + XChangeProperty(__glutDisplay, window->win, + __glutMotifHints, __glutMotifHints, 32, + PropModeReplace, (unsigned char *) &hints, 4); + if (workMask & GLUT_MAP_WORK) { + /* Handle case where glutFullScreen is called + before the first time that the window is + mapped. Some window managers will randomly or + interactively position the window the first + time it is mapped if the window's + WM_NORMAL_HINTS property does not request an + explicit position. We don't want any such + window manager interaction when going + fullscreen. Overwrite the WM_NORMAL_HINTS + property installed by glutCreateWindow's + XSetWMProperties property with one explicitly + requesting a fullscreen window. */ + XSizeHints hints; + + hints.flags = USPosition | USSize; + hints.x = 0; + hints.y = 0; + hints.width = window->desiredWidth; + hints.height = window->desiredHeight; + XSetWMNormalHints(__glutDisplay, window->win, &hints); + } + } else { + XDeleteProperty(__glutDisplay, window->win, __glutMotifHints); + } + } + } + if (window->desiredConfMask & CWStackMode) { + changes.stack_mode = window->desiredStack; + /* Do not let glutPushWindow push window beneath the + underlay. */ + if (window->parent && window->parent->overlay + && window->desiredStack == Below) { + changes.stack_mode = Above; + changes.sibling = window->parent->overlay->win; + window->desiredConfMask |= CWSibling; + } + } + XConfigureWindow(__glutDisplay, window->win, + window->desiredConfMask, &changes); + window->desiredConfMask = 0; +#endif + } +#if !defined(_WIN32) && !defined(__OS2__) + /* Be sure to establish the colormaps BEFORE map window is + done. */ + if (workMask & GLUT_COLORMAP_WORK) { + __glutEstablishColormapsProperty(window); + } +#endif + if (workMask & GLUT_MAP_WORK) { + switch (window->desiredMapState) { + case WithdrawnState: + if (window->parent) { + XUnmapWindow(__glutDisplay, window->win); + } else { + XWithdrawWindow(__glutDisplay, window->win, + __glutScreen); + } + window->shownState = 0; + break; + case NormalState: + XMapWindow(__glutDisplay, window->win); + window->shownState = 1; + break; +#ifdef _WIN32 + case GameModeState: /* Not an Xlib value. */ + ShowWindow(window->win, SW_SHOW); + window->shownState = 1; + break; +#endif + case IconicState: + XIconifyWindow(__glutDisplay, window->win, __glutScreen); + window->shownState = 0; + break; + } + } + } + if (workMask & (GLUT_REDISPLAY_WORK | GLUT_OVERLAY_REDISPLAY_WORK | GLUT_REPAIR_WORK | GLUT_OVERLAY_REPAIR_WORK)) { + if (window->forceReshape) { + /* Guarantee that before a display callback is generated + for a window, a reshape callback must be generated. */ + __glutSetWindow(window); + window->reshape(window->width, window->height); + window->forceReshape = False; + + /* Setting the redisplay bit on the first reshape is + necessary to make the "Mesa glXSwapBuffers to repair + damage" hack operate correctly. Without indicating a + redisplay is necessary, there's not an initial back + buffer render from which to blit from when damage + happens to the window. */ + workMask |= GLUT_REDISPLAY_WORK; + } + /* The code below is more involved than otherwise necessary + because it is paranoid about the overlay or entire window + being removed or destroyed in the course of the callbacks. + Notice how the global __glutWindowDamaged is used to record + the layers' damage status. See the code in glutLayerGet for + how __glutWindowDamaged is used. The point is to not have to + update the "damaged" field after the callback since the + window (or overlay) may be destroyed (or removed) when the + callback returns. */ + + if (window->overlay && window->overlay->display) { + int num = window->num; + Window xid = window->overlay ? window->overlay->win : None; + + /* If an overlay display callback is registered, we + differentiate between a redisplay needed for the + overlay and/or normal plane. If there is no overlay + display callback registered, we simply use the + standard display callback. */ + + if (workMask & (GLUT_REDISPLAY_WORK | GLUT_REPAIR_WORK)) { + if (__glutMesaSwapHackSupport) { + if (window->usedSwapBuffers) { + if ((workMask & (GLUT_REPAIR_WORK | GLUT_REDISPLAY_WORK)) == GLUT_REPAIR_WORK) { + SWAP_BUFFERS_WINDOW(window); + goto skippedDisplayCallback1; + } + } + } + /* Render to normal plane. */ +#ifdef _WIN32 + window->renderDc = window->hdc; +#endif + window->renderWin = window->win; + window->renderCtx = window->ctx; + __glutWindowDamaged = (workMask & GLUT_REPAIR_WORK); + __glutSetWindow(window); + window->usedSwapBuffers = 0; + window->display(); + __glutWindowDamaged = 0; + + skippedDisplayCallback1:; + } + if (workMask & (GLUT_OVERLAY_REDISPLAY_WORK | GLUT_OVERLAY_REPAIR_WORK)) { + window = __glutWindowList[num]; + if (window && window->overlay && + window->overlay->win == xid && window->overlay->display) { + + /* Render to overlay. */ +#ifdef _WIN32 + window->renderDc = window->overlay->hdc; +#endif + window->renderWin = window->overlay->win; + window->renderCtx = window->overlay->ctx; + __glutWindowDamaged = (workMask & GLUT_OVERLAY_REPAIR_WORK); + __glutSetWindow(window); + window->overlay->display(); + __glutWindowDamaged = 0; + } else { + /* Overlay may have since been destroyed or the + overlay callback may have been disabled during + normal display callback. */ + } + } + } else { + if (__glutMesaSwapHackSupport) { + if (!window->overlay && window->usedSwapBuffers) { + if ((workMask & (GLUT_REPAIR_WORK | GLUT_REDISPLAY_WORK)) == GLUT_REPAIR_WORK) { + SWAP_BUFFERS_WINDOW(window); + goto skippedDisplayCallback2; + } + } + } + /* Render to normal plane (and possibly overlay). */ + __glutWindowDamaged = (workMask & (GLUT_OVERLAY_REPAIR_WORK | GLUT_REPAIR_WORK)); + __glutSetWindow(window); + window->usedSwapBuffers = 0; + window->display(); + __glutWindowDamaged = 0; + + skippedDisplayCallback2:; + } + } + /* Combine workMask with window->workMask to determine what + finish and debug work there is. */ + workMask |= window->workMask; + + if (workMask & GLUT_FINISH_WORK) { + /* Finish work makes sure a glFinish gets done to indirect + rendering contexts. Indirect contexts tend to have much + longer latency because lots of OpenGL extension requests + can queue up in the X protocol stream. __glutSetWindow + is where the finish works gets queued for indirect + contexts. */ + __glutSetWindow(window); + glFinish(); + } + if (workMask & GLUT_DEBUG_WORK) { + __glutSetWindow(window); + glutReportErrors(); + } + /* Strip out dummy, finish, and debug work bits. */ + window->workMask &= ~(GLUT_DUMMY_WORK | GLUT_FINISH_WORK | GLUT_DEBUG_WORK); + if (window->workMask) { + /* Leave on work list. */ + return window; + } else { + /* Remove current window from work list. */ + return window->prevWorkWin; + } +} + +#ifndef _WIN32 +static /* X11 implementations do not need this global. */ +#endif +void +__glutProcessWindowWorkLists(void) +{ + if (__glutWindowWorkList) { + GLUTwindow *remainder, *work; + + work = __glutWindowWorkList; + __glutWindowWorkList = NULL; + if (work) { + remainder = processWindowWorkList(work); + if (remainder) { + *beforeEnd = __glutWindowWorkList; + __glutWindowWorkList = remainder; + } + } + } +} + +/* CENTRY */ +void GLUTAPIENTRY +glutMainLoop(void) +{ +#if !defined(_WIN32) + if (!__glutDisplay) + __glutFatalUsage("main loop entered with out proper initialization."); +#endif + if (!__glutWindowListSize) + __glutFatalUsage( + "main loop entered with no windows created."); + for (;;) { + __glutProcessWindowWorkLists(); + if (__glutIdleFunc || __glutWindowWorkList) { + idleWait(); + } else { + if (__glutTimerList) { + waitForSomething(); + } else { + processEventsAndTimeouts(); + } + } + } +} +/* ENDCENTRY */ |