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Diffstat (limited to 'nx-X11/lib/Xt/PassivGrab.c')
| -rw-r--r-- | nx-X11/lib/Xt/PassivGrab.c | 1053 |
1 files changed, 0 insertions, 1053 deletions
diff --git a/nx-X11/lib/Xt/PassivGrab.c b/nx-X11/lib/Xt/PassivGrab.c deleted file mode 100644 index 377efdcd5..000000000 --- a/nx-X11/lib/Xt/PassivGrab.c +++ /dev/null @@ -1,1053 +0,0 @@ -/* $Xorg: PassivGrab.c,v 1.5 2001/02/09 02:03:56 xorgcvs Exp $ */ - -/******************************************************** - -Copyright 1988 by Hewlett-Packard Company -Copyright 1987, 1988, 1989,1990 by Digital Equipment Corporation, Maynard, Massachusetts -Copyright 1993 by Sun Microsystems, Inc. Mountain View, CA. - -Permission to use, copy, modify, and distribute this software -and its documentation for any purpose and without fee is hereby -granted, provided that the above copyright notice appear in all -copies and that both that copyright notice and this permission -notice appear in supporting documentation, and that the names of -Hewlett-Packard, Digital, or Sun not be used in advertising or -publicity pertaining to distribution of the software without specific, -written prior permission. - -DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. - -SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, -INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- -NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE LI- -ABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR -PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR -OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH -THE USE OR PERFORMANCE OF THIS SOFTWARE. - -********************************************************/ -/* $XFree86$ */ - -/* - -Copyright 1987, 1988, 1989, 1990, 1994, 1998 The Open Group - -Permission to use, copy, modify, distribute, and sell this software and its -documentation for any purpose is hereby granted without fee, provided that -the above copyright notice appear in all copies and that both that -copyright notice and this permission notice appear in supporting -documentation. - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN -AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN -CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -Except as contained in this notice, the name of The Open Group shall not be -used in advertising or otherwise to promote the sale, use or other dealings -in this Software without prior written authorization from The Open Group. - -*/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "IntrinsicI.h" -#include "StringDefs.h" -#include "PassivGraI.h" - -/* typedef unsigned long Mask; */ -#define BITMASK(i) (((Mask)1) << ((i) & 31)) -#define MASKIDX(i) ((i) >> 5) -#define MASKWORD(buf, i) buf[MASKIDX(i)] -#define BITSET(buf, i) MASKWORD(buf, i) |= BITMASK(i) -#define BITCLEAR(buf, i) MASKWORD(buf, i) &= ~BITMASK(i) -#define GETBIT(buf, i) (MASKWORD(buf, i) & BITMASK(i)) -#define MasksPerDetailMask 8 - -#define pDisplay(grabPtr) (((grabPtr)->widget)->core.screen->display) -#define pWindow(grabPtr) (((grabPtr)->widget)->core.window) - - -/***************************************************************************/ -/*********************** Internal Support Routines *************************/ -/***************************************************************************/ - -/* - * Turn off (clear) the bit in the specified detail mask which is associated - * with the detail. - */ - -static void DeleteDetailFromMask( - Mask **ppDetailMask, - unsigned short detail) -{ - Mask *pDetailMask = *ppDetailMask; - - if (!pDetailMask) { - int i; - pDetailMask = (Mask *)__XtMalloc(sizeof(Mask) * MasksPerDetailMask); - for (i = MasksPerDetailMask; --i >= 0; ) - pDetailMask[i] = ~0; - *ppDetailMask = pDetailMask; - } - BITCLEAR((pDetailMask), detail); -} - - -/* - * Make an exact copy of the specified detail mask. - */ - -static Mask *CopyDetailMask( - Mask *pOriginalDetailMask) -{ - Mask *pTempMask; - int i; - - if (!pOriginalDetailMask) - return NULL; - - pTempMask = (Mask *)__XtMalloc(sizeof(Mask) * MasksPerDetailMask); - - for ( i = 0; i < MasksPerDetailMask; i++) - pTempMask[i]= pOriginalDetailMask[i]; - - return pTempMask; -} - - -/* - * Allocate a new grab entry, and fill in all of the fields using the - * specified parameters. - */ - -static XtServerGrabPtr CreateGrab( - Widget widget, - Boolean ownerEvents, - Modifiers modifiers, - KeyCode keybut, - int pointer_mode, - int keyboard_mode, - Mask event_mask, - Window confine_to, - Cursor cursor, - Boolean need_ext) -{ - XtServerGrabPtr grab; - - if (confine_to || cursor) - need_ext = True; - grab = (XtServerGrabPtr)__XtMalloc(sizeof(XtServerGrabRec) + - (need_ext ? sizeof(XtServerGrabExtRec) - : 0)); - grab->next = NULL; - grab->widget = widget; - grab->ownerEvents = ownerEvents; - grab->pointerMode = pointer_mode; - grab->keyboardMode = keyboard_mode; - grab->eventMask = event_mask; - grab->hasExt = need_ext; - grab->confineToIsWidgetWin = (XtWindow (widget) == confine_to); - grab->modifiers = modifiers; - grab->keybut = keybut; - if (need_ext) { - XtServerGrabExtPtr ext = GRABEXT(grab); - ext->pModifiersMask = NULL; - ext->pKeyButMask = NULL; - ext->confineTo = confine_to; - ext->cursor = cursor; - } - return grab; -} - - -/* - * Free up the space occupied by a grab entry. - */ - -static void FreeGrab( - XtServerGrabPtr pGrab) -{ - if (pGrab->hasExt) { - XtServerGrabExtPtr ext = GRABEXT(pGrab); - if (ext->pModifiersMask) - XtFree((char *)ext->pModifiersMask); - if (ext->pKeyButMask) - XtFree((char *)ext->pKeyButMask); - } - XtFree((char *)pGrab); -} - -typedef struct _DetailRec { - unsigned short exact; - Mask *pMask; -} DetailRec, *DetailPtr; - -/* - * If the first detail is set to 'exception' and the second detail - * is contained in the mask of the first, then TRUE is returned. - */ - -static Bool IsInGrabMask( - register DetailPtr firstDetail, - register DetailPtr secondDetail, - unsigned short exception) -{ - if (firstDetail->exact == exception) { - if (!firstDetail->pMask) - return TRUE; - - /* (at present) never called with two non-null pMasks */ - if (secondDetail->exact == exception) - return FALSE; - - if (GETBIT(firstDetail->pMask, secondDetail->exact)) - return TRUE; - } - - return FALSE; -} - - -/* - * If neither of the details is set to 'exception', and they match - * exactly, then TRUE is returned. - */ - -static Bool IdenticalExactDetails( - unsigned short firstExact, - unsigned short secondExact, - unsigned short exception) -{ - if ((firstExact == exception) || (secondExact == exception)) - return FALSE; - - if (firstExact == secondExact) - return TRUE; - - return FALSE; -} - - -/* - * If the first detail is set to 'exception', and its mask has the bit - * enabled which corresponds to the second detail, OR if neither of the - * details is set to 'exception' and the details match exactly, then - * TRUE is returned. - */ - -static Bool DetailSupersedesSecond( - register DetailPtr firstDetail, - register DetailPtr secondDetail, - unsigned short exception) -{ - if (IsInGrabMask(firstDetail, secondDetail, exception)) - return TRUE; - - if (IdenticalExactDetails(firstDetail->exact, secondDetail->exact, - exception)) - return TRUE; - - return FALSE; -} - - -/* - * If the two grab events match exactly, or if the first grab entry - * 'encompasses' the second grab entry, then TRUE is returned. - */ - -static Bool GrabSupersedesSecond( - register XtServerGrabPtr pFirstGrab, - register XtServerGrabPtr pSecondGrab) -{ - DetailRec first, second; - - first.exact = pFirstGrab->modifiers; - if (pFirstGrab->hasExt) - first.pMask = GRABEXT(pFirstGrab)->pModifiersMask; - else - first.pMask = NULL; - second.exact = pSecondGrab->modifiers; - if (pSecondGrab->hasExt) - second.pMask = GRABEXT(pSecondGrab)->pModifiersMask; - else - second.pMask = NULL; - if (!DetailSupersedesSecond(&first, &second, (unsigned short)AnyModifier)) - return FALSE; - - first.exact = pFirstGrab->keybut; - if (pFirstGrab->hasExt) - first.pMask = GRABEXT(pFirstGrab)->pKeyButMask; - else - first.pMask = NULL; - second.exact = pSecondGrab->keybut; - if (pSecondGrab->hasExt) - second.pMask = GRABEXT(pSecondGrab)->pKeyButMask; - else - second.pMask = NULL; - if (DetailSupersedesSecond(&first, &second, (unsigned short)AnyKey)) - return TRUE; - - return FALSE; -} - - -/* - * Two grabs are considered to be matching if either of the following are true: - * - * 1) The two grab entries match exactly, or the first grab entry - * encompasses the second grab entry. - * 2) The second grab entry encompasses the first grab entry. - * 3) The keycodes match exactly, and one entry's modifiers encompasses - * the others. - * 4) The keycode for one entry encompasses the other, and the detail - * for the other entry encompasses the first. - */ - -static Bool GrabMatchesSecond( - register XtServerGrabPtr pFirstGrab, - register XtServerGrabPtr pSecondGrab) -{ - DetailRec firstD, firstM, secondD, secondM; - - if (pDisplay(pFirstGrab) != pDisplay(pSecondGrab)) - return FALSE; - - if (GrabSupersedesSecond(pFirstGrab, pSecondGrab)) - return TRUE; - - if (GrabSupersedesSecond(pSecondGrab, pFirstGrab)) - return TRUE; - - firstD.exact = pFirstGrab->keybut; - firstM.exact = pFirstGrab->modifiers; - if (pFirstGrab->hasExt) { - firstD.pMask = GRABEXT(pFirstGrab)->pKeyButMask; - firstM.pMask = GRABEXT(pFirstGrab)->pModifiersMask; - } else { - firstD.pMask = NULL; - firstM.pMask = NULL; - } - secondD.exact = pSecondGrab->keybut; - secondM.exact = pSecondGrab->modifiers; - if (pSecondGrab->hasExt) { - secondD.pMask = GRABEXT(pSecondGrab)->pKeyButMask; - secondM.pMask = GRABEXT(pSecondGrab)->pModifiersMask; - } else { - secondD.pMask = NULL; - secondM.pMask = NULL; - } - - if (DetailSupersedesSecond(&secondD, &firstD, (unsigned short)AnyKey) && - DetailSupersedesSecond(&firstM, &secondM, (unsigned short)AnyModifier)) - return TRUE; - - if (DetailSupersedesSecond(&firstD, &secondD, (unsigned short)AnyKey) && - DetailSupersedesSecond(&secondM, &firstM, (unsigned short)AnyModifier)) - return TRUE; - - return FALSE; -} - - -/* - * Delete a grab combination from the passive grab list. Each entry will - * be checked to see if it is affected by the grab being deleted. This - * may result in multiple entries being modified/deleted. - */ - -static void DeleteServerGrabFromList( - XtServerGrabPtr *passiveListPtr, - XtServerGrabPtr pMinuendGrab) -{ - register XtServerGrabPtr *next; - register XtServerGrabPtr grab; - register XtServerGrabExtPtr ext; - - for (next = passiveListPtr; (grab = *next); ) - { - if (GrabMatchesSecond(grab, pMinuendGrab) && - (pDisplay(grab) == pDisplay(pMinuendGrab))) - { - if (GrabSupersedesSecond(pMinuendGrab, grab)) - { - /* - * The entry being deleted encompasses the list entry, - * so delete the list entry. - */ - *next = grab->next; - FreeGrab(grab); - continue; - } - - if (!grab->hasExt) { - grab = (XtServerGrabPtr) - XtRealloc((char *)grab, (sizeof(XtServerGrabRec) + - sizeof(XtServerGrabExtRec))); - *next = grab; - grab->hasExt = True; - ext = GRABEXT(grab); - ext->pKeyButMask = NULL; - ext->pModifiersMask = NULL; - ext->confineTo = None; - ext->cursor = None; - } else - ext = GRABEXT(grab); - if ((grab->keybut == AnyKey) && (grab->modifiers != AnyModifier)) - { - /* - * If the list entry has the key detail of AnyKey, and - * a modifier detail not set to AnyModifier, then we - * simply need to turn off the key detail bit in the - * list entry's key detail mask. - */ - DeleteDetailFromMask(&ext->pKeyButMask, pMinuendGrab->keybut); - } else if ((grab->modifiers == AnyModifier) && - (grab->keybut != AnyKey)) { - /* - * The list entry has a specific key detail, but its - * modifier detail is set to AnyModifier; so, we only - * need to turn off the specified modifier combination - * in the list entry's modifier mask. - */ - DeleteDetailFromMask(&ext->pModifiersMask, - pMinuendGrab->modifiers); - } else if ((pMinuendGrab->keybut != AnyKey) && - (pMinuendGrab->modifiers != AnyModifier)) { - /* - * The list entry has a key detail of AnyKey and a - * modifier detail of AnyModifier; the entry being - * deleted has a specific key and a specific modifier - * combination. Therefore, we need to mask off the - * keycode from the list entry, and also create a - * new entry for this keycode, which has a modifier - * mask set to AnyModifier & ~(deleted modifiers). - */ - XtServerGrabPtr pNewGrab; - - DeleteDetailFromMask(&ext->pKeyButMask, pMinuendGrab->keybut); - pNewGrab = CreateGrab(grab->widget, - (Boolean)grab->ownerEvents, - (Modifiers)AnyModifier, - pMinuendGrab->keybut, - (int)grab->pointerMode, - (int)grab->keyboardMode, - (Mask)0, (Window)0, (Cursor)0, True); - GRABEXT(pNewGrab)->pModifiersMask = - CopyDetailMask(ext->pModifiersMask); - - DeleteDetailFromMask(&GRABEXT(pNewGrab)->pModifiersMask, - pMinuendGrab->modifiers); - - pNewGrab->next = *passiveListPtr; - *passiveListPtr = pNewGrab; - } else if (pMinuendGrab->keybut == AnyKey) { - /* - * The list entry has keycode AnyKey and modifier - * AnyModifier; the entry being deleted has - * keycode AnyKey and specific modifiers. So we - * simply need to mask off the specified modifier - * combination. - */ - DeleteDetailFromMask(&ext->pModifiersMask, - pMinuendGrab->modifiers); - } else { - /* - * The list entry has keycode AnyKey and modifier - * AnyModifier; the entry being deleted has a - * specific keycode and modifier AnyModifier. So - * we simply need to mask off the specified - * keycode. - */ - DeleteDetailFromMask(&ext->pKeyButMask, pMinuendGrab->keybut); - } - } - next = &(*next)->next; - } -} - -static void DestroyPassiveList( - XtServerGrabPtr *passiveListPtr) -{ - XtServerGrabPtr next, grab; - - for (next = *passiveListPtr; next; ) { - grab = next; - next = grab->next; - - /* not necessary to explicitly ungrab key or button; - * window is being destroyed so server will take care of it. - */ - - FreeGrab(grab); - } -} - - -/* - * This function is called at widget destroy time to clean up - */ -/*ARGSUSED*/ -void _XtDestroyServerGrabs( - Widget w, - XtPointer closure, - XtPointer call_data) /* unused */ -{ - XtPerWidgetInput pwi = (XtPerWidgetInput)closure; - XtPerDisplayInput pdi; - - LOCK_PROCESS; - pdi = _XtGetPerDisplayInput(XtDisplay(w)); - _XtClearAncestorCache(w); - UNLOCK_PROCESS; - - /* Remove the active grab, if necessary */ - if ((pdi->keyboard.grabType != XtNoServerGrab) && - (pdi->keyboard.grab.widget == w)) { - pdi->keyboard.grabType = XtNoServerGrab; - pdi->activatingKey = (KeyCode)0; - } - if ((pdi->pointer.grabType != XtNoServerGrab) && - (pdi->pointer.grab.widget == w)) - pdi->pointer.grabType = XtNoServerGrab; - - DestroyPassiveList(&pwi->keyList); - DestroyPassiveList(&pwi->ptrList); - - _XtFreePerWidgetInput(w, pwi); -} - -/* - * If the incoming event is on the passive grab list, then activate - * the grab. The grab will remain in effect until the key is released. - */ - -XtServerGrabPtr _XtCheckServerGrabsOnWidget ( - XEvent *event, - Widget widget, - _XtBoolean isKeyboard) -{ - register XtServerGrabPtr grab; - XtServerGrabRec tempGrab; - XtServerGrabPtr *passiveListPtr; - XtPerWidgetInput pwi; - - LOCK_PROCESS; - pwi = _XtGetPerWidgetInput(widget, FALSE); - UNLOCK_PROCESS; - if (!pwi) - return (XtServerGrabPtr)NULL; - if (isKeyboard) - passiveListPtr = &pwi->keyList; - else - passiveListPtr = &pwi->ptrList; - - /* - * if either there is no entry in the context manager or the entry - * is empty, or the keyboard is grabed, then no work to be done - */ - if (!*passiveListPtr) - return (XtServerGrabPtr)NULL; - - /* Take only the lower thirteen bits as modifier state. The X Keyboard - * Extension may be representing keyboard group state in two upper bits. - */ - tempGrab.widget = widget; - tempGrab.keybut = event->xkey.keycode; /* also xbutton.button */ - tempGrab.modifiers = event->xkey.state & 0x1FFF; /*also xbutton.state*/ - tempGrab.hasExt = False; - - for (grab = *passiveListPtr; grab; grab = grab->next) { - if (GrabMatchesSecond(&tempGrab, grab)) - return (grab); - } - return (XtServerGrabPtr)NULL; -} - -/* - * This handler is needed to guarantee that we see releases on passive - * button grabs for widgets that haven't selected for button release. - */ - -/*ARGSUSED*/ -static void ActiveHandler ( - Widget widget, - XtPointer pdi, - XEvent *event, - Boolean *cont) -{ - /* nothing */ -} - - -/* - * MakeGrab - */ -static void MakeGrab( - XtServerGrabPtr grab, - XtServerGrabPtr *passiveListPtr, - Boolean isKeyboard, - XtPerDisplayInput pdi, - XtPerWidgetInput pwi) -{ - if (!isKeyboard && !pwi->active_handler_added) { - XtAddEventHandler(grab->widget, ButtonReleaseMask, FALSE, - ActiveHandler, (XtPointer)pdi); - pwi->active_handler_added = TRUE; - } - - if (isKeyboard) { - XGrabKey(pDisplay(grab), - grab->keybut, grab->modifiers, - pWindow(grab), grab->ownerEvents, - grab->pointerMode, grab->keyboardMode); - } else { - Window confineTo = None; - Cursor cursor = None; - - if (grab->hasExt) { - if (grab->confineToIsWidgetWin) - confineTo = XtWindow (grab->widget); - else - confineTo = GRABEXT(grab)->confineTo; - cursor = GRABEXT(grab)->cursor; - } - XGrabButton(pDisplay(grab), - grab->keybut, grab->modifiers, - pWindow(grab), grab->ownerEvents, grab->eventMask, - grab->pointerMode, grab->keyboardMode, - confineTo, cursor); - } - - /* Add the new grab entry to the passive key grab list */ - grab->next = *passiveListPtr; - *passiveListPtr = grab; -} - -static void MakeGrabs( - XtServerGrabPtr *passiveListPtr, - Boolean isKeyboard, - XtPerDisplayInput pdi) -{ - XtServerGrabPtr next = *passiveListPtr; - XtServerGrabPtr grab; - XtPerWidgetInput pwi; - /* - * make MakeGrab build a new list that has had the merge - * processing done on it. Start with an empty list - * (passiveListPtr). - */ - LOCK_PROCESS; - *passiveListPtr = NULL; - while (next) - { - grab = next; - next = grab->next; - pwi = _XtGetPerWidgetInput(grab->widget, FALSE); - MakeGrab(grab, passiveListPtr, isKeyboard, pdi, pwi); - } - UNLOCK_PROCESS; -} - -/* - * This function is the event handler attached to the associated widget - * when grabs need to be added, but the widget is not yet realized. When - * it is first mapped, this handler will be invoked, and it will add all - * needed grabs. - */ - -/*ARGSUSED*/ -static void RealizeHandler ( - Widget widget, - XtPointer closure, - XEvent *event, /* unused */ - Boolean *cont) /* unused */ -{ - XtPerWidgetInput pwi = (XtPerWidgetInput)closure; - XtPerDisplayInput pdi; - - LOCK_PROCESS; - pdi = _XtGetPerDisplayInput(XtDisplay(widget)); - UNLOCK_PROCESS; - MakeGrabs(&pwi->keyList, KEYBOARD, pdi); - MakeGrabs(&pwi->ptrList, POINTER, pdi); - - XtRemoveEventHandler(widget, XtAllEvents, True, - RealizeHandler, (XtPointer)pwi); - pwi->realize_handler_added = FALSE; -} - -/***************************************************************************/ -/**************************** Global Routines ******************************/ -/***************************************************************************/ - - -/* - * Routine used by an application to set up a passive grab for a key/modifier - * combination. - */ - -static -void GrabKeyOrButton ( - Widget widget, - KeyCode keyOrButton, - Modifiers modifiers, - Boolean owner_events, - int pointer_mode, - int keyboard_mode, - Mask event_mask, - Window confine_to, - Cursor cursor, - Boolean isKeyboard) -{ - XtServerGrabPtr *passiveListPtr; - XtServerGrabPtr newGrab; - XtPerWidgetInput pwi; - XtPerDisplayInput pdi; - - - XtCheckSubclass(widget, coreWidgetClass, "in XtGrabKey or XtGrabButton"); - LOCK_PROCESS; - pwi = _XtGetPerWidgetInput(widget, TRUE); - if (isKeyboard) - passiveListPtr = &pwi->keyList; - else - passiveListPtr = &pwi->ptrList; - pdi = _XtGetPerDisplayInput(XtDisplay(widget)); - UNLOCK_PROCESS; - newGrab = CreateGrab(widget, owner_events, modifiers, - keyOrButton, pointer_mode, keyboard_mode, - event_mask, confine_to, cursor, False); - /* - * if the widget is realized then process the entry into the grab - * list. else if the list is empty (i.e. first time) then add the - * event handler. then add the raw entry to the list for processing - * in the handler at realize time. - */ - if (XtIsRealized(widget)) - MakeGrab(newGrab, passiveListPtr, isKeyboard, pdi, pwi); - else { - if (!pwi->realize_handler_added) - { - XtAddEventHandler(widget, StructureNotifyMask, FALSE, - RealizeHandler, - (XtPointer)pwi); - pwi->realize_handler_added = TRUE; - } - - while (*passiveListPtr) - passiveListPtr = &(*passiveListPtr)->next; - *passiveListPtr = newGrab; - } -} - - -static -void UngrabKeyOrButton ( - Widget widget, - int keyOrButton, - Modifiers modifiers, - Boolean isKeyboard) -{ - XtServerGrabRec tempGrab; - XtPerWidgetInput pwi; - - XtCheckSubclass(widget, coreWidgetClass, - "in XtUngrabKey or XtUngrabButton"); - - /* Build a temporary grab list entry */ - tempGrab.widget = widget; - tempGrab.modifiers = modifiers; - tempGrab.keybut = keyOrButton; - tempGrab.hasExt = False; - - LOCK_PROCESS; - pwi = _XtGetPerWidgetInput(widget, FALSE); - UNLOCK_PROCESS; - /* - * if there is no entry in the context manager then somethings wrong - */ - if (!pwi) - { - XtAppWarningMsg(XtWidgetToApplicationContext(widget), - "invalidGrab", "ungrabKeyOrButton", XtCXtToolkitError, - "Attempt to remove nonexistent passive grab", - (String *)NULL, (Cardinal *)NULL); - return; - } - - if (XtIsRealized(widget)) - { - if (isKeyboard) - XUngrabKey(widget->core.screen->display, - keyOrButton, (unsigned int)modifiers, - widget->core.window); - else - XUngrabButton(widget->core.screen->display, - keyOrButton, (unsigned int)modifiers, - widget->core.window); - } - - - /* Delete all entries which are encompassed by the specified grab. */ - DeleteServerGrabFromList(isKeyboard ? &pwi->keyList : &pwi->ptrList, - &tempGrab); -} - -void XtGrabKey ( - Widget widget, - _XtKeyCode keycode, - Modifiers modifiers, - _XtBoolean owner_events, - int pointer_mode, - int keyboard_mode) -{ - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - GrabKeyOrButton(widget, (KeyCode)keycode, modifiers, owner_events, - pointer_mode, keyboard_mode, - (Mask)0, (Window)None, (Cursor)None, KEYBOARD); - UNLOCK_APP(app); -} - -void XtGrabButton( - Widget widget, - int button, - Modifiers modifiers, - _XtBoolean owner_events, - unsigned int event_mask, - int pointer_mode, - int keyboard_mode, - Window confine_to, - Cursor cursor) -{ - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - GrabKeyOrButton(widget, (KeyCode)button, modifiers, owner_events, - pointer_mode, keyboard_mode, - (Mask)event_mask, confine_to, cursor, POINTER); - UNLOCK_APP(app); -} - - -/* - * Routine used by an application to clear a passive grab for a key/modifier - * combination. - */ - -void XtUngrabKey ( - Widget widget, - _XtKeyCode keycode, - Modifiers modifiers) -{ - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - UngrabKeyOrButton(widget, (int)keycode, modifiers, KEYBOARD); - UNLOCK_APP(app); -} - -void XtUngrabButton ( - Widget widget, - unsigned int button, - Modifiers modifiers) -{ - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - UngrabKeyOrButton(widget, (KeyCode)button, modifiers, POINTER); - UNLOCK_APP(app); -} - -/* - * Active grab of Device. clear any client side grabs so we dont lock - */ -static int GrabDevice ( - Widget widget, - Boolean owner_events, - int pointer_mode, - int keyboard_mode, - Mask event_mask, - Window confine_to, - Cursor cursor, - Time time, - Boolean isKeyboard) -{ - XtPerDisplayInput pdi; - int returnVal; - - XtCheckSubclass(widget, coreWidgetClass, - "in XtGrabKeyboard or XtGrabPointer"); - if (!XtIsRealized(widget)) - return GrabNotViewable; - LOCK_PROCESS; - pdi = _XtGetPerDisplayInput(XtDisplay(widget)); - UNLOCK_PROCESS; - if (!isKeyboard) - returnVal = XGrabPointer(XtDisplay(widget), XtWindow(widget), - owner_events, event_mask, - pointer_mode, keyboard_mode, - confine_to, cursor, time); - else - returnVal = XGrabKeyboard(XtDisplay(widget), XtWindow(widget), - owner_events, pointer_mode, - keyboard_mode, time); - - if (returnVal == GrabSuccess) { - XtDevice device; - - device = isKeyboard ? &pdi->keyboard : &pdi->pointer; - /* fill in the server grab rec */ - device->grab.widget = widget; - device->grab.modifiers = 0; - device->grab.keybut = 0; - device->grab.ownerEvents = owner_events; - device->grab.pointerMode = pointer_mode; - device->grab.keyboardMode = keyboard_mode; - device->grab.hasExt = False; - device->grabType = XtActiveServerGrab; - pdi->activatingKey = (KeyCode)0; - } - return returnVal; -} - -static void UngrabDevice( - Widget widget, - Time time, - Boolean isKeyboard) -{ - XtPerDisplayInput pdi; - XtDevice device; - - LOCK_PROCESS; - pdi = _XtGetPerDisplayInput(XtDisplay(widget)); - UNLOCK_PROCESS; - device = isKeyboard ? &pdi->keyboard : &pdi->pointer; - XtCheckSubclass(widget, coreWidgetClass, - "in XtUngrabKeyboard or XtUngrabPointer"); - - if (device->grabType != XtNoServerGrab) { - - if (device->grabType != XtPseudoPassiveServerGrab - && XtIsRealized(widget)) { - if (isKeyboard) - XUngrabKeyboard(XtDisplay(widget), time); - else - XUngrabPointer(XtDisplay(widget), time); - } - device->grabType = XtNoServerGrab; - pdi->activatingKey = (KeyCode)0; - } -} - - -/* - * Active grab of keyboard. clear any client side grabs so we dont lock - */ -int XtGrabKeyboard ( - Widget widget, - _XtBoolean owner_events, - int pointer_mode, - int keyboard_mode, - Time time) -{ - int retval; - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - retval = GrabDevice (widget, owner_events, - pointer_mode, keyboard_mode, - (Mask)0, (Window)None, (Cursor)None, time, KEYBOARD); - UNLOCK_APP(app); - return retval; -} - - -/* - * Ungrab the keyboard - */ - -void XtUngrabKeyboard( - Widget widget, - Time time) -{ - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - UngrabDevice(widget, time, KEYBOARD); - UNLOCK_APP(app); -} - - - - -/* - * grab the pointer - */ -int XtGrabPointer ( - Widget widget, - _XtBoolean owner_events, - unsigned int event_mask, - int pointer_mode, - int keyboard_mode, - Window confine_to, - Cursor cursor, - Time time) -{ - int retval; - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - retval = GrabDevice (widget, owner_events, - pointer_mode, keyboard_mode, - (Mask)event_mask, confine_to, - cursor, time, POINTER); - UNLOCK_APP(app); - return retval; -} - - -/* - * Ungrab the pointer - */ - -void XtUngrabPointer( - Widget widget, - Time time) -{ - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - UngrabDevice(widget, time, POINTER); - UNLOCK_APP(app); -} - - -void _XtRegisterPassiveGrabs ( - Widget widget) -{ - XtPerWidgetInput pwi = _XtGetPerWidgetInput (widget, FALSE); - - if (pwi != NULL && !pwi->realize_handler_added) { - XtAddEventHandler(widget, StructureNotifyMask, FALSE, - RealizeHandler, - (XtPointer)pwi); - pwi->realize_handler_added = TRUE; - } -} |