48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsSelectsAreaFrame_h___
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#define nsSelectsAreaFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsBlockFrame.h"
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class nsSelectsAreaFrame : public nsBlockFrame
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{
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public:
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NS_DECL_FRAMEARENA_HELPERS
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friend nsContainerFrame* NS_NewSelectsAreaFrame(nsIPresShell* aShell,
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nsStyleContext* aContext,
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nsFrameState aFlags);
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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void BuildDisplayListInternal(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists);
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virtual void Reflow(nsPresContext* aCX,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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nscoord BSizeOfARow() const { return mBSizeOfARow; }
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protected:
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explicit nsSelectsAreaFrame(nsStyleContext* aContext) :
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nsBlockFrame(aContext),
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mBSizeOfARow(0)
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{}
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// We cache the block size of a single row so that changes to the
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// "size" attribute, padding, etc. can all be handled with only one
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// reflow. We'll have to reflow twice if someone changes our font
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// size or something like that, so that the block size of our options
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// will change.
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nscoord mBSizeOfARow;
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};
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#endif /* nsSelectsAreaFrame_h___ */
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