Method queueResize

dw/widget.cc:321–413

* \brief This method should be called, when a widget changes its size. * * A "fast" queueResize will ignore the ancestors, and furthermore * not trigger the idle function. Used only within * viewportSizeChanged, and not available outside Layout and Widget. */

 * viewportSizeChanged, and not available outside Layout and Widget.
 */
void Widget::queueResize (int ref, bool extremesChanged, bool fast)
{
   DBG_OBJ_ENTER ("resize", 0, "queueResize", "%d, %s, %s",
                  ref, extremesChanged ? "true" : "false",
                  fast ? "true" : "false");

   enterQueueResize ();

   Widget *widget2, *child;

   Flags resizeFlag, extremesFlag, totalFlags;

   if (layout) {
      // If RESIZE_QUEUED is set, this widget is already in the list.
      if (!resizeQueued ())
         layout->queueResizeList->put (this);

      resizeFlag = RESIZE_QUEUED;
      extremesFlag = EXTREMES_QUEUED;
   } else {
      resizeFlag = NEEDS_RESIZE;
      extremesFlag = EXTREMES_CHANGED;
   }

   setFlags (resizeFlag);
   setFlags (ALLOCATE_QUEUED);
   markSizeChange (ref);

   totalFlags = resizeFlag;
   
   if (extremesChanged) {
      totalFlags = (Flags)(totalFlags | extremesFlag);
      
      setFlags (extremesFlag);
      markExtremesChange (ref);
   }

   if (fast) {
      if (parent) {
         // In this case, queueResize is called from top (may be a
         // random entry point) to bottom, so markSizeChange and
         // markExtremesChange have to be called explicitly for the
         // parent. The tests (needsResize etc.) are uses to check
         // whether queueResize has been called for the parent, or
         // whether this widget is the entry point.
         if (parent->needsResize () || parent->resizeQueued ())
            parent->markSizeChange (parentRef);
         if (parent->extremesChanged () || parent->extremesQueued ())
            parent->markExtremesChange (parentRef);
      }
   } else {
      for (widget2 = parent, child = this; widget2;
           child = widget2, widget2 = widget2->parent) {         
         if (layout && !widget2->resizeQueued ())
            layout->queueResizeList->put (widget2);

         DBG_OBJ_MSGF ("resize", 2, "setting %s and ALLOCATE_QUEUED for %p",
                       resizeFlag == RESIZE_QUEUED ?