import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/generic/nsLeafFrame.cpp

@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* base class for rendering objects that do not have child lists */
+
+#include "nsLeafFrame.h"
+#include "nsPresContext.h"
+
+using namespace mozilla;
+
+nsLeafFrame::~nsLeafFrame()
+{
+}
+
+/* virtual */ nscoord
+nsLeafFrame::GetMinISize(nsRenderingContext *aRenderingContext)
+{
+  nscoord result;
+  DISPLAY_MIN_WIDTH(this, result);
+  result = GetIntrinsicISize();
+  return result;
+}
+
+/* virtual */ nscoord
+nsLeafFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
+{
+  nscoord result;
+  DISPLAY_PREF_WIDTH(this, result);
+  result = GetIntrinsicISize();
+  return result;
+}
+
+/* virtual */
+LogicalSize
+nsLeafFrame::ComputeAutoSize(nsRenderingContext* aRenderingContext,
+                             WritingMode         aWM,
+                             const LogicalSize&  aCBSize,
+                             nscoord             aAvailableISize,
+                             const LogicalSize&  aMargin,
+                             const LogicalSize&  aBorder,
+                             const LogicalSize&  aPadding,
+                             ComputeSizeFlags    aFlags)
+{
+  const WritingMode wm = GetWritingMode();
+  LogicalSize result(wm, GetIntrinsicISize(), GetIntrinsicBSize());
+  return result.ConvertTo(aWM, wm);
+}
+
+void
+nsLeafFrame::Reflow(nsPresContext* aPresContext,
+                    ReflowOutput& aMetrics,
+                    const ReflowInput& aReflowInput,
+                    nsReflowStatus& aStatus)
+{
+  MarkInReflow();
+  DO_GLOBAL_REFLOW_COUNT("nsLeafFrame");
+  NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
+                 ("enter nsLeafFrame::Reflow: aMaxSize=%d,%d",
+                  aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight()));
+
+  NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
+
+  DoReflow(aPresContext, aMetrics, aReflowInput, aStatus);
+
+  FinishAndStoreOverflow(&aMetrics);
+}
+
+void
+nsLeafFrame::DoReflow(nsPresContext* aPresContext,
+                      ReflowOutput& aMetrics,
+                      const ReflowInput& aReflowInput,
+                      nsReflowStatus& aStatus)
+{
+  NS_ASSERTION(aReflowInput.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
+               "Shouldn't have unconstrained stuff here "
+               "thanks to the rules of reflow");
+  NS_ASSERTION(NS_INTRINSICSIZE != aReflowInput.ComputedHeight(),
+               "Shouldn't have unconstrained stuff here "
+               "thanks to ComputeAutoSize");
+
+  // XXX how should border&padding effect baseline alignment?
+  // => descent = borderPadding.bottom for example
+  WritingMode wm = aReflowInput.GetWritingMode();
+  aMetrics.SetSize(wm, aReflowInput.ComputedSizeWithBorderPadding());
+
+  aStatus = NS_FRAME_COMPLETE;
+
+  NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
+                 ("exit nsLeafFrame::DoReflow: size=%d,%d",
+                  aMetrics.ISize(wm), aMetrics.BSize(wm)));
+  NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aMetrics);
+
+  aMetrics.SetOverflowAreasToDesiredBounds();
+}
+
+nscoord
+nsLeafFrame::GetIntrinsicBSize()
+{
+  NS_NOTREACHED("Someone didn't override Reflow or ComputeAutoSize");
+  return 0;
+}
+
+void
+nsLeafFrame::SizeToAvailSize(const ReflowInput& aReflowInput,
+                             ReflowOutput& aDesiredSize)
+{
+  WritingMode wm = aReflowInput.GetWritingMode();
+  LogicalSize size(wm, aReflowInput.AvailableISize(), // FRAME
+                   aReflowInput.AvailableBSize());
+  aDesiredSize.SetSize(wm, size);
+  aDesiredSize.SetOverflowAreasToDesiredBounds();
+  FinishAndStoreOverflow(&aDesiredSize);  
+}