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-rw-r--r--layout/generic/nsLeafFrame.cpp115
1 files changed, 115 insertions, 0 deletions
diff --git a/layout/generic/nsLeafFrame.cpp b/layout/generic/nsLeafFrame.cpp
new file mode 100644
index 000000000..634eee04b
--- /dev/null
+++ b/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);
+}