The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/layout/generic/nsLeafFrame.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,118 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +/* base class for rendering objects that do not have child lists */
    1.10 +
    1.11 +#include "nsLeafFrame.h"
    1.12 +#include "nsPresContext.h"
    1.13 +
    1.14 +nsLeafFrame::~nsLeafFrame()
    1.15 +{
    1.16 +}
    1.17 +
    1.18 +NS_IMPL_FRAMEARENA_HELPERS(nsLeafFrame)
    1.19 +
    1.20 +/* virtual */ nscoord
    1.21 +nsLeafFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
    1.22 +{
    1.23 +  nscoord result;
    1.24 +  DISPLAY_MIN_WIDTH(this, result);
    1.25 +
    1.26 +  result = GetIntrinsicWidth();
    1.27 +  return result;
    1.28 +}
    1.29 +
    1.30 +/* virtual */ nscoord
    1.31 +nsLeafFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
    1.32 +{
    1.33 +  nscoord result;
    1.34 +  DISPLAY_PREF_WIDTH(this, result);
    1.35 +  result = GetIntrinsicWidth();
    1.36 +  return result;
    1.37 +}
    1.38 +
    1.39 +/* virtual */ nsSize
    1.40 +nsLeafFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
    1.41 +                             nsSize aCBSize, nscoord aAvailableWidth,
    1.42 +                             nsSize aMargin, nsSize aBorder,
    1.43 +                             nsSize aPadding, bool aShrinkWrap)
    1.44 +{
    1.45 +  return nsSize(GetIntrinsicWidth(), GetIntrinsicHeight());
    1.46 +}
    1.47 +
    1.48 +nsresult
    1.49 +nsLeafFrame::Reflow(nsPresContext* aPresContext,
    1.50 +                    nsHTMLReflowMetrics& aMetrics,
    1.51 +                    const nsHTMLReflowState& aReflowState,
    1.52 +                    nsReflowStatus& aStatus)
    1.53 +{
    1.54 +  DO_GLOBAL_REFLOW_COUNT("nsLeafFrame");
    1.55 +  NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
    1.56 +                 ("enter nsLeafFrame::Reflow: aMaxSize=%d,%d",
    1.57 +                  aReflowState.AvailableWidth(), aReflowState.AvailableHeight()));
    1.58 +
    1.59 +  NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
    1.60 +
    1.61 +  DoReflow(aPresContext, aMetrics, aReflowState, aStatus);
    1.62 +
    1.63 +  FinishAndStoreOverflow(&aMetrics);
    1.64 +  return NS_OK;
    1.65 +}
    1.66 +
    1.67 +nsresult
    1.68 +nsLeafFrame::DoReflow(nsPresContext* aPresContext,
    1.69 +                      nsHTMLReflowMetrics& aMetrics,
    1.70 +                      const nsHTMLReflowState& aReflowState,
    1.71 +                      nsReflowStatus& aStatus)
    1.72 +{
    1.73 +  NS_ASSERTION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
    1.74 +               "Shouldn't have unconstrained stuff here "
    1.75 +               "Thanks to the rules of reflow");
    1.76 +  NS_ASSERTION(NS_INTRINSICSIZE != aReflowState.ComputedHeight(),
    1.77 +               "Shouldn't have unconstrained stuff here "
    1.78 +               "thanks to ComputeAutoSize");  
    1.79 +
    1.80 +  aMetrics.Width() = aReflowState.ComputedWidth();
    1.81 +  aMetrics.Height() = aReflowState.ComputedHeight();
    1.82 +  
    1.83 +  AddBordersAndPadding(aReflowState, aMetrics);
    1.84 +  aStatus = NS_FRAME_COMPLETE;
    1.85 +
    1.86 +  NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
    1.87 +                 ("exit nsLeafFrame::DoReflow: size=%d,%d",
    1.88 +                  aMetrics.Width(), aMetrics.Height()));
    1.89 +  NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
    1.90 +
    1.91 +  aMetrics.SetOverflowAreasToDesiredBounds();
    1.92 +
    1.93 +  return NS_OK;
    1.94 +}
    1.95 +
    1.96 +nscoord
    1.97 +nsLeafFrame::GetIntrinsicHeight()
    1.98 +{
    1.99 +  NS_NOTREACHED("Someone didn't override Reflow or ComputeAutoSize");
   1.100 +  return 0;
   1.101 +}
   1.102 +
   1.103 +// XXX how should border&padding effect baseline alignment?
   1.104 +// => descent = borderPadding.bottom for example
   1.105 +void
   1.106 +nsLeafFrame::AddBordersAndPadding(const nsHTMLReflowState& aReflowState,
   1.107 +                                  nsHTMLReflowMetrics& aMetrics)
   1.108 +{
   1.109 +  aMetrics.Width() += aReflowState.ComputedPhysicalBorderPadding().LeftRight();
   1.110 +  aMetrics.Height() += aReflowState.ComputedPhysicalBorderPadding().TopBottom();
   1.111 +}
   1.112 +
   1.113 +void
   1.114 +nsLeafFrame::SizeToAvailSize(const nsHTMLReflowState& aReflowState,
   1.115 +                             nsHTMLReflowMetrics& aDesiredSize)
   1.116 +{
   1.117 +  aDesiredSize.Width() = aReflowState.AvailableWidth(); // FRAME
   1.118 +  aDesiredSize.Height() = aReflowState.AvailableHeight();
   1.119 +  aDesiredSize.SetOverflowAreasToDesiredBounds();
   1.120 +  FinishAndStoreOverflow(&aDesiredSize);  
   1.121 +}