From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 layout/generic/nsRubyTextFrame.cpp | 97 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 layout/generic/nsRubyTextFrame.cpp

(limited to 'layout/generic/nsRubyTextFrame.cpp')

diff --git a/layout/generic/nsRubyTextFrame.cpp b/layout/generic/nsRubyTextFrame.cpp
new file mode 100644
index 0000000000..b4a26ff333
--- /dev/null
+++ b/layout/generic/nsRubyTextFrame.cpp
@@ -0,0 +1,97 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code is subject to the terms of the Mozilla Public License
+ * version 2.0 (the "License"). You can obtain a copy of the License at
+ * http://mozilla.org/MPL/2.0/. */
+
+/* rendering object for CSS "display: ruby-text" */
+
+#include "nsRubyTextFrame.h"
+
+#include "mozilla/WritingModes.h"
+#include "nsLineLayout.h"
+#include "nsPresContext.h"
+#include "nsStyleContext.h"
+
+using namespace mozilla;
+
+//----------------------------------------------------------------------
+
+// Frame class boilerplate
+// =======================
+
+NS_QUERYFRAME_HEAD(nsRubyTextFrame)
+  NS_QUERYFRAME_ENTRY(nsRubyTextFrame)
+NS_QUERYFRAME_TAIL_INHERITING(nsRubyContentFrame)
+
+NS_IMPL_FRAMEARENA_HELPERS(nsRubyTextFrame)
+
+nsContainerFrame*
+NS_NewRubyTextFrame(nsIPresShell* aPresShell,
+                    nsStyleContext* aContext)
+{
+  return new (aPresShell) nsRubyTextFrame(aContext);
+}
+
+
+//----------------------------------------------------------------------
+
+// nsRubyTextFrame Method Implementations
+// ======================================
+
+nsIAtom*
+nsRubyTextFrame::GetType() const
+{
+  return nsGkAtoms::rubyTextFrame;
+}
+
+/* virtual */ bool
+nsRubyTextFrame::CanContinueTextRun() const
+{
+  return false;
+}
+
+#ifdef DEBUG_FRAME_DUMP
+nsresult
+nsRubyTextFrame::GetFrameName(nsAString& aResult) const
+{
+  return MakeFrameName(NS_LITERAL_STRING("RubyText"), aResult);
+}
+#endif
+
+
+
+/* virtual */ void
+nsRubyTextFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                  const nsRect&           aDirtyRect,
+                                  const nsDisplayListSet& aLists)
+{
+  if (IsAutoHidden()) {
+    return;
+  }
+
+  nsRubyContentFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
+}
+
+/* virtual */ void
+nsRubyTextFrame::Reflow(nsPresContext* aPresContext,
+                        ReflowOutput& aDesiredSize,
+                        const ReflowInput& aReflowInput,
+                        nsReflowStatus& aStatus)
+{
+  // Even if we want to hide this frame, we have to reflow it first.
+  // If we leave it dirty, changes to its content will never be
+  // propagated to the ancestors, then it won't be displayed even if
+  // the content is no longer the same, until next reflow triggered by
+  // some other change. In general, we always reflow all the frames we
+  // created. There might be other problems if we don't do that.
+  nsRubyContentFrame::Reflow(aPresContext, aDesiredSize, aReflowInput, aStatus);
+
+  if (IsAutoHidden()) {
+    // Reset the ISize. The BSize is not changed so that it won't
+    // affect vertical positioning in unexpected way.
+    WritingMode lineWM = aReflowInput.mLineLayout->GetWritingMode();
+    aDesiredSize.ISize(lineWM) = 0;
+    aDesiredSize.SetOverflowAreasToDesiredBounds();
+  }
+}
-- 
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