void
nsSVGPathGeometryFrame::NotifyRedrawUnsuspended()
{
  RemoveStateBits(NS_STATE_SVG_REDRAW_SUSPENDED);

  if (GetStateBits() & NS_STATE_SVG_DIRTY)
    nsSVGUtils::UpdateGraphic(this);
}
Exemplo n.º 2
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void
nsSplittableFrame::SetPrevContinuation(nsIFrame* aFrame)
{
  NS_ASSERTION (!aFrame || GetType() == aFrame->GetType(), "setting a prev continuation with incorrect type!");
  NS_ASSERTION (!IsInPrevContinuationChain(aFrame, this), "creating a loop in continuation chain!");
  mPrevContinuation = aFrame;
  RemoveStateBits(NS_FRAME_IS_FLUID_CONTINUATION);
}
Exemplo n.º 3
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void nsLeafBoxFrame::UpdateMouseThrough()
{
  if (mContent) {
    static nsIContent::AttrValuesArray strings[] =
      {&nsGkAtoms::never, &nsGkAtoms::always, nullptr};
    switch (mContent->FindAttrValueIn(kNameSpaceID_None,
                                      nsGkAtoms::mousethrough,
                                      strings, eCaseMatters)) {
      case 0: AddStateBits(NS_FRAME_MOUSE_THROUGH_NEVER); break;
      case 1: AddStateBits(NS_FRAME_MOUSE_THROUGH_ALWAYS); break;
      case 2: {
          RemoveStateBits(NS_FRAME_MOUSE_THROUGH_ALWAYS);
          RemoveStateBits(NS_FRAME_MOUSE_THROUGH_NEVER);
          break;
      }
    }
  }
}
Exemplo n.º 4
0
NS_IMETHODIMP
nsSVGPathGeometryFrame::SetMatrixPropagation(PRBool aPropagate)
{
  if (aPropagate) {
    AddStateBits(NS_STATE_SVG_PROPAGATE_TRANSFORM);
  } else {
    RemoveStateBits(NS_STATE_SVG_PROPAGATE_TRANSFORM);
  }
  return NS_OK;
}
Exemplo n.º 5
0
void 
nsTableColFrame::SetColType(nsTableColType aType) 
{
  NS_ASSERTION(aType != eColAnonymousCol ||
               (GetPrevContinuation() &&
                GetPrevContinuation()->GetNextContinuation() == this &&
                GetPrevContinuation()->GetNextSibling() == this),
               "spanned content cols must be continuations");
  uint32_t type = aType - eColContent;
  RemoveStateBits(COL_TYPE_BITS);
  AddStateBits(nsFrameState(type << COL_TYPE_OFFSET));
}
NS_IMETHODIMP
nsSVGDisplayContainerFrame::RemoveFrame(ChildListID aListID,
                                        nsIFrame* aOldFrame)
{
  // Force the invalidation before it's too late
  RemoveStateBits(NS_STATE_SVG_REDRAW_SUSPENDED);

  nsSVGUtils::InvalidateCoveredRegion(aOldFrame);

  nsresult rv = nsSVGContainerFrame::RemoveFrame(aListID, aOldFrame);

  if (!(GetStateBits() & (NS_STATE_SVG_NONDISPLAY_CHILD | NS_STATE_IS_OUTER_SVG))) {
    nsSVGUtils::NotifyAncestorsOfFilterRegionChange(this);
  }

  return rv;
}
Exemplo n.º 7
0
nsresult
nsBox::SyncLayout(nsBoxLayoutState& aState)
{
  /*
  PRBool collapsed = PR_FALSE;
  IsCollapsed(aState, collapsed);
  if (collapsed) {
    CollapseChild(aState, this, PR_TRUE);
    return NS_OK;
  }
  */
  

  if (GetStateBits() & NS_FRAME_IS_DIRTY)
     Redraw(aState);

  RemoveStateBits(NS_FRAME_HAS_DIRTY_CHILDREN | NS_FRAME_IS_DIRTY
                  | NS_FRAME_FIRST_REFLOW | NS_FRAME_IN_REFLOW);

  nsPresContext* presContext = aState.PresContext();

  PRUint32 flags = 0;
  GetLayoutFlags(flags);

  PRUint32 stateFlags = aState.LayoutFlags();

  flags |= stateFlags;

  nsRect rect(nsPoint(0, 0), GetSize());

  if (ComputesOwnOverflowArea()) {
    rect = GetOverflowRect();
  }
  else {
    if (!DoesClipChildren() && !IsCollapsed(aState)) {
      // See if our child frames caused us to overflow after being laid
      // out. If so, store the overflow area.  This normally can't happen
      // in XUL, but it can happen with the CSS 'outline' property and
      // possibly with other exotic stuff (e.g. relatively positioned
      // frames in HTML inside XUL).
      nsIFrame* box = GetChildBox();
      while (box) {
        nsRect bounds = box->GetOverflowRect() + box->GetPosition();
        rect.UnionRect(rect, bounds);

        box = box->GetNextBox();
      }
    }

    FinishAndStoreOverflow(&rect, GetSize());
  }

  nsIView* view = GetView();
  if (view) {
    // Make sure the frame's view is properly sized and positioned and has
    // things like opacity correct
    nsHTMLContainerFrame::SyncFrameViewAfterReflow(
                             presContext, 
                             this,
                             view,
                             &rect,
                             flags);
  } 

  return NS_OK;
}
Exemplo n.º 8
0
NS_IMETHODIMP 
nsColumnSetFrame::Reflow(nsPresContext*           aPresContext,
                         nsHTMLReflowMetrics&     aDesiredSize,
                         const nsHTMLReflowState& aReflowState,
                         nsReflowStatus&          aStatus)
{
  // Don't support interruption in columns
  nsPresContext::InterruptPreventer noInterrupts(aPresContext);

  DO_GLOBAL_REFLOW_COUNT("nsColumnSetFrame");
  DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);

  // Initialize OUT parameter
  aStatus = NS_FRAME_COMPLETE;

  // Our children depend on our height if we have a fixed height.
  if (aReflowState.ComputedHeight() != NS_AUTOHEIGHT) {
    NS_ASSERTION(aReflowState.ComputedHeight() != NS_INTRINSICSIZE,
                 "Unexpected mComputedHeight");
    AddStateBits(NS_FRAME_CONTAINS_RELATIVE_HEIGHT);
  }
  else {
    RemoveStateBits(NS_FRAME_CONTAINS_RELATIVE_HEIGHT);
  }

  //------------ Handle Incremental Reflow -----------------

  ReflowConfig config = ChooseColumnStrategy(aReflowState);
  bool isBalancing = config.mBalanceColCount < PR_INT32_MAX;
  
  // If balancing, then we allow the last column to grow to unbounded
  // height during the first reflow. This gives us a way to estimate
  // what the average column height should be, because we can measure
  // the heights of all the columns and sum them up. But don't do this
  // if we have a next in flow because we don't want to suck all its
  // content back here and then have to push it out again!
  nsIFrame* nextInFlow = GetNextInFlow();
  bool unboundedLastColumn = isBalancing && !nextInFlow;
  nsCollapsingMargin carriedOutBottomMargin;
  ColumnBalanceData colData;
  bool feasible = ReflowChildren(aDesiredSize, aReflowState,
    aStatus, config, unboundedLastColumn, &carriedOutBottomMargin, colData);

  if (isBalancing && !aPresContext->HasPendingInterrupt()) {
    nscoord availableContentHeight = GetAvailableContentHeight(aReflowState);
  
    // Termination of the algorithm below is guaranteed because
    // knownFeasibleHeight - knownInfeasibleHeight decreases in every
    // iteration.
    nscoord knownFeasibleHeight = NS_INTRINSICSIZE;
    nscoord knownInfeasibleHeight = 0;
    // We set this flag when we detect that we may contain a frame
    // that can break anywhere (thus foiling the linear decrease-by-one
    // search)
    bool maybeContinuousBreakingDetected = false;

    while (!aPresContext->HasPendingInterrupt()) {
      nscoord lastKnownFeasibleHeight = knownFeasibleHeight;

      // Record what we learned from the last reflow
      if (feasible) {
        // maxHeight is feasible. Also, mLastBalanceHeight is feasible.
        knownFeasibleHeight = NS_MIN(knownFeasibleHeight, colData.mMaxHeight);
        knownFeasibleHeight = NS_MIN(knownFeasibleHeight, mLastBalanceHeight);

        // Furthermore, no height less than the height of the last
        // column can ever be feasible. (We might be able to reduce the
        // height of a non-last column by moving content to a later column,
        // but we can't do that with the last column.)
        if (mFrames.GetLength() == config.mBalanceColCount) {
          knownInfeasibleHeight = NS_MAX(knownInfeasibleHeight,
                                         colData.mLastHeight - 1);
        }
      } else {
        knownInfeasibleHeight = NS_MAX(knownInfeasibleHeight, mLastBalanceHeight);
        // If a column didn't fit in its available height, then its current
        // height must be the minimum height for unbreakable content in
        // the column, and therefore no smaller height can be feasible.
        knownInfeasibleHeight = NS_MAX(knownInfeasibleHeight,
                                       colData.mMaxOverflowingHeight - 1);

        if (unboundedLastColumn) {
          // The last column is unbounded, so all content got reflowed, so the
          // mColMaxHeight is feasible.
          knownFeasibleHeight = NS_MIN(knownFeasibleHeight,
                                       colData.mMaxHeight);
        }
      }

#ifdef DEBUG_roc
      printf("*** nsColumnSetFrame::Reflow balancing knownInfeasible=%d knownFeasible=%d\n",
             knownInfeasibleHeight, knownFeasibleHeight);
#endif

      if (knownInfeasibleHeight >= knownFeasibleHeight - 1) {
        // knownFeasibleHeight is where we want to be
        break;
      }

      if (knownInfeasibleHeight >= availableContentHeight) {
        break;
      }

      if (lastKnownFeasibleHeight - knownFeasibleHeight == 1) {
        // We decreased the feasible height by one twip only. This could
        // indicate that there is a continuously breakable child frame
        // that we are crawling through.
        maybeContinuousBreakingDetected = PR_TRUE;
      }

      nscoord nextGuess = (knownFeasibleHeight + knownInfeasibleHeight)/2;
      // The constant of 600 twips is arbitrary. It's about two line-heights.
      if (knownFeasibleHeight - nextGuess < 600 &&
          !maybeContinuousBreakingDetected) {
        // We're close to our target, so just try shrinking just the
        // minimum amount that will cause one of our columns to break
        // differently.
        nextGuess = knownFeasibleHeight - 1;
      } else if (unboundedLastColumn) {
        // Make a guess by dividing that into N columns. Add some slop
        // to try to make it on the feasible side.  The constant of
        // 600 twips is arbitrary. It's about two line-heights.
        nextGuess = colData.mSumHeight/config.mBalanceColCount + 600;
        // Sanitize it
        nextGuess = NS_MIN(NS_MAX(nextGuess, knownInfeasibleHeight + 1),
                           knownFeasibleHeight - 1);
      } else if (knownFeasibleHeight == NS_INTRINSICSIZE) {
        // This can happen when we had a next-in-flow so we didn't
        // want to do an unbounded height measuring step. Let's just increase
        // from the infeasible height by some reasonable amount.
        nextGuess = knownInfeasibleHeight*2 + 600;
      }
      // Don't bother guessing more than our height constraint.
      nextGuess = NS_MIN(availableContentHeight, nextGuess);

#ifdef DEBUG_roc
      printf("*** nsColumnSetFrame::Reflow balancing choosing next guess=%d\n", nextGuess);
#endif

      config.mColMaxHeight = nextGuess;
      
      unboundedLastColumn = PR_FALSE;
      AddStateBits(NS_FRAME_IS_DIRTY);
      feasible = ReflowChildren(aDesiredSize, aReflowState,
                                aStatus, config, PR_FALSE, 
                                &carriedOutBottomMargin, colData);
    }

    if (!feasible && !aPresContext->HasPendingInterrupt()) {
      // We may need to reflow one more time at the feasible height to
      // get a valid layout.
      bool skip = false;
      if (knownInfeasibleHeight >= availableContentHeight) {
        config.mColMaxHeight = availableContentHeight;
        if (mLastBalanceHeight == availableContentHeight) {
          skip = PR_TRUE;
        }
      } else {
        config.mColMaxHeight = knownFeasibleHeight;
      }
      if (!skip) {
        // If our height is unconstrained, make sure that the last column is
        // allowed to have arbitrary height here, even though we were balancing.
        // Otherwise we'd have to split, and it's not clear what we'd do with
        // that.
        AddStateBits(NS_FRAME_IS_DIRTY);
        ReflowChildren(aDesiredSize, aReflowState, aStatus, config,
                       availableContentHeight == NS_UNCONSTRAINEDSIZE,
                       &carriedOutBottomMargin, colData);
      }
    }
  }

  if (aPresContext->HasPendingInterrupt() &&
      aReflowState.availableHeight == NS_UNCONSTRAINEDSIZE) {
    // In this situation, we might be lying about our reflow status, because
    // our last kid (the one that got interrupted) was incomplete.  Fix that.
    aStatus = NS_FRAME_COMPLETE;
  }
  
  CheckInvalidateSizeChange(aDesiredSize);

  FinishReflowWithAbsoluteFrames(aPresContext, aDesiredSize, aReflowState, aStatus);
  aDesiredSize.mCarriedOutBottomMargin = carriedOutBottomMargin;

  NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);

  NS_ASSERTION(NS_FRAME_IS_FULLY_COMPLETE(aStatus) ||
               aReflowState.availableHeight != NS_UNCONSTRAINEDSIZE,
               "Column set should be complete if the available height is unconstrained");

  return NS_OK;
}