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Text File  |  1991-05-09  |  4.4 KB  |  147 lines
  1. /* $XConsortium: Popup.c,v 1.30 91/05/09 18:07:59 swick Exp $ */
  2.  
  3. /***********************************************************
  4. Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts,
  5. and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
  6.  
  7.                         All Rights Reserved
  8.  
  9. Permission to use, copy, modify, and distribute this software and its 
  10. documentation for any purpose and without fee is hereby granted, 
  11. provided that the above copyright notice appear in all copies and that
  12. both that copyright notice and this permission notice appear in 
  13. supporting documentation, and that the names of Digital or MIT not be
  14. used in advertising or publicity pertaining to distribution of the
  15. software without specific, written prior permission.  
  16.  
  17. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  18. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  19. DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  20. ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  21. WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  22. ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  23. SOFTWARE.
  24.  
  25. ******************************************************************/
  26.  
  27. #include "IntrinsicI.h"
  28. #include "Shell.h"
  29. #include "ShellP.h"
  30. #include "StringDefs.h"
  31.  
  32. #if NeedFunctionPrototypes
  33. void _XtPopup(
  34.     Widget      widget,
  35.     XtGrabKind  grab_kind,
  36.     _XtBoolean  spring_loaded
  37.     )
  38. #else
  39. void _XtPopup(widget, grab_kind, spring_loaded)
  40.     Widget      widget;
  41.     XtGrabKind  grab_kind;
  42.     Boolean     spring_loaded;
  43. #endif
  44. {
  45.     register ShellWidget shell_widget = (ShellWidget) widget;
  46.  
  47.     if (! XtIsShell(widget)) {
  48.     XtAppErrorMsg(XtWidgetToApplicationContext(widget),
  49.         "invalidClass","xtPopup",XtCXtToolkitError,
  50.                 "XtPopup requires a subclass of shellWidgetClass",
  51.                   (String *)NULL, (Cardinal *)NULL);
  52.     }
  53.  
  54.     if (! shell_widget->shell.popped_up) {
  55.     XtGrabKind call_data = grab_kind;
  56.     XtCallCallbacks(widget, XtNpopupCallback, (XtPointer)&call_data);
  57.     shell_widget->shell.popped_up = TRUE;
  58.     shell_widget->shell.grab_kind = grab_kind;
  59.     shell_widget->shell.spring_loaded = spring_loaded;
  60.     if (shell_widget->shell.create_popup_child_proc != NULL) {
  61.         (*(shell_widget->shell.create_popup_child_proc))(widget);
  62.     }
  63.     if (grab_kind == XtGrabExclusive) {
  64.         XtAddGrab(widget, TRUE, spring_loaded);
  65.     } else if (grab_kind == XtGrabNonexclusive) {
  66.         XtAddGrab(widget, FALSE, spring_loaded);
  67.     }
  68.     XtRealizeWidget(widget);
  69.     XMapRaised(XtDisplay(widget), XtWindow(widget));
  70.     } else
  71.     XRaiseWindow(XtDisplay(widget), XtWindow(widget));
  72.  
  73. } /* _XtPopup */
  74.  
  75. void XtPopup (widget, grab_kind)
  76.     Widget  widget;
  77.     XtGrabKind grab_kind;
  78. {
  79.     switch (grab_kind) {
  80.  
  81.       case XtGrabNone:
  82.       case XtGrabExclusive:
  83.       case XtGrabNonexclusive:
  84.     break;
  85.  
  86.       default:
  87.     XtAppWarningMsg(
  88.         XtWidgetToApplicationContext(widget),
  89.         "invalidGrabKind","xtPopup",XtCXtToolkitError,
  90.         "grab kind argument has invalid value; XtGrabNone assumed",
  91.         (String *)NULL, (Cardinal *)NULL);
  92.     grab_kind = XtGrabNone;
  93.     }
  94.     
  95.     _XtPopup(widget, grab_kind, FALSE);
  96. } /* XtPopup */
  97.  
  98. void XtPopupSpringLoaded (widget)
  99.     Widget widget;
  100. {
  101.     _XtPopup(widget, XtGrabExclusive, True);
  102. }
  103.  
  104. void XtPopdown(widget)
  105.     Widget  widget;
  106. {
  107.     /* Unmap a shell widget if it is mapped, and remove from grab list */
  108.  
  109.     register ShellWidget shell_widget = (ShellWidget) widget;
  110.  
  111.     if (! XtIsShell(widget)) {
  112.     XtAppErrorMsg(XtWidgetToApplicationContext(widget),
  113.         "invalidClass","xtPopdown",XtCXtToolkitError,
  114.             "XtPopdown requires a subclass of shellWidgetClass",
  115.               (String *)NULL, (Cardinal *)NULL);
  116.     }
  117.  
  118.     if (shell_widget->shell.popped_up) {
  119.     XtGrabKind grab_kind = shell_widget->shell.grab_kind;
  120.     XtUnmapWidget(widget);
  121.     XWithdrawWindow(XtDisplay(widget), XtWindow(widget),
  122.             XScreenNumberOfScreen(XtScreen(widget)));
  123.     if (grab_kind != XtGrabNone) {
  124.         XtRemoveGrab(widget);
  125.     }
  126.     shell_widget->shell.popped_up = FALSE;
  127.     XtCallCallbacks(widget, XtNpopdownCallback, (XtPointer)&grab_kind);
  128.     }
  129. } /* XtPopdown */
  130.  
  131. /* ARGSUSED */
  132. void XtCallbackPopdown(widget, closure, call_data)
  133.     Widget  widget;
  134.     XtPointer closure;
  135.     XtPointer call_data;
  136. {
  137.     register XtPopdownID id = (XtPopdownID) closure;
  138.  
  139.     XtPopdown(id->shell_widget);
  140.     if (id->enable_widget != NULL) {
  141.     XtSetSensitive(id->enable_widget, TRUE);
  142.     }
  143. } /* XtCallbackPopdown */
  144.  
  145.  
  146.  
  147.