diff options
Diffstat (limited to 'generic/tkFocus.c')
| -rw-r--r-- | generic/tkFocus.c | 129 |
1 files changed, 128 insertions, 1 deletions
diff --git a/generic/tkFocus.c b/generic/tkFocus.c index 4b929c5..37d3795 100644 --- a/generic/tkFocus.c +++ b/generic/tkFocus.c @@ -9,7 +9,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkFocus.c,v 1.14 2007/09/07 00:34:52 dgp Exp $ + * RCS: @(#) $Id: tkFocus.c,v 1.15 2007/10/15 20:52:47 hobbs Exp $ */ #include "tkInt.h" @@ -1044,6 +1044,133 @@ TkFocusFree( } /* + *---------------------------------------------------------------------- + * + * TkFocusSplit -- + * + * Adjust focus window for a newly managed toplevel, thus splitting + * the toplevel into two toplevels. + * + * Results: + * None. + * + * Side effects: + * A new record is allocated for the new toplevel window. + * + *---------------------------------------------------------------------- + */ + +void +TkFocusSplit(winPtr) + TkWindow *winPtr; /* Window is the new toplevel + * Any focus point at or below window + * must be moved to this new toplevel */ +{ + ToplevelFocusInfo *tlFocusPtr; + DisplayFocusInfo *displayFocusPtr; + TkWindow *topLevelPtr; + TkWindow *subWinPtr; + + displayFocusPtr = FindDisplayFocusInfo(winPtr->mainPtr, winPtr->dispPtr); + + /* + * Find the top-level window for winPtr, then find (or create) + * a record for the top-level. Also see whether winPtr and all its + * ancestors are mapped. + */ + + for (topLevelPtr = winPtr; ; topLevelPtr = topLevelPtr->parentPtr) { + if (topLevelPtr == NULL) { + /* + * The window is being deleted. No point in worrying about + * giving it the focus. + */ + return; + } + if (topLevelPtr->flags & TK_TOP_HIERARCHY) { + break; + } + } + + /* Search all focus records to find child windows of winPtr */ + for (tlFocusPtr = winPtr->mainPtr->tlFocusPtr; tlFocusPtr != NULL; + tlFocusPtr = tlFocusPtr->nextPtr) { + if (tlFocusPtr->topLevelPtr == topLevelPtr) { + break; + } + } + + if (tlFocusPtr == NULL) { + /* No focus record for this toplevel, nothing to do. */ + return; + } + + /* See if current focusWin is child of the new toplevel */ + for (subWinPtr = tlFocusPtr->focusWinPtr; + subWinPtr && subWinPtr != winPtr && subWinPtr != topLevelPtr; + subWinPtr = subWinPtr->parentPtr) {} + + if (subWinPtr == winPtr) { + /* Move focus to new toplevel */ + ToplevelFocusInfo *newTlFocusPtr; + + newTlFocusPtr = (ToplevelFocusInfo *) ckalloc(sizeof(ToplevelFocusInfo)); + newTlFocusPtr->topLevelPtr = winPtr; + newTlFocusPtr->focusWinPtr = tlFocusPtr->focusWinPtr; + newTlFocusPtr->nextPtr = winPtr->mainPtr->tlFocusPtr; + winPtr->mainPtr->tlFocusPtr = newTlFocusPtr; + /* Move old toplevel's focus to the toplevel itself */ + tlFocusPtr->focusWinPtr = topLevelPtr; + } + /* If it's not, then let focus progress naturally */ +} + +/* + *---------------------------------------------------------------------- + * + * TkFocusJoin -- + * + * Remove the focus record for this window that is nolonger managed + * + * Results: + * None. + * + * Side effects: + * A tlFocusPtr record is removed + * + *---------------------------------------------------------------------- + */ + +void +TkFocusJoin(winPtr) + TkWindow *winPtr; /* Window is no longer a toplevel */ +{ + ToplevelFocusInfo *tlFocusPtr; + ToplevelFocusInfo *tmpPtr; + + /* + * Remove old toplevel record + */ + if (winPtr && winPtr->mainPtr && winPtr->mainPtr->tlFocusPtr + && winPtr->mainPtr->tlFocusPtr->topLevelPtr == winPtr) { + tmpPtr = winPtr->mainPtr->tlFocusPtr; + winPtr->mainPtr->tlFocusPtr = tmpPtr->nextPtr; + ckfree((char *)tmpPtr); + } else { + for (tlFocusPtr = winPtr->mainPtr->tlFocusPtr; tlFocusPtr != NULL; + tlFocusPtr = tlFocusPtr->nextPtr) { + if (tlFocusPtr->nextPtr && + tlFocusPtr->nextPtr->topLevelPtr == winPtr) { + tmpPtr = tlFocusPtr->nextPtr; + tlFocusPtr->nextPtr = tmpPtr->nextPtr; + ckfree((char *)tmpPtr); + break; + } + } + } +} + +/* * Local Variables: * mode: c * c-basic-offset: 4 |