55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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/* base class for rendering objects that do not have child lists */
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#ifndef nsLeafFrame_h___
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#define nsLeafFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsIFrame.h"
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#include "nsDisplayList.h"
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/**
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* Abstract class that provides simple fixed-size layout for leaf objects.
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*/
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class nsLeafFrame : public nsIFrame {
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public:
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NS_DECL_ABSTRACT_FRAME(nsLeafFrame)
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// nsIFrame replacements
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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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nscoord IntrinsicISize(const mozilla::IntrinsicSizeInput& aInput,
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mozilla::IntrinsicISizeType aType) override;
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/**
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* Our auto size is just the intrinsic size.
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*/
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mozilla::LogicalSize ComputeAutoSize(
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gfxContext* aRenderingContext, mozilla::WritingMode aWM,
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const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorderPadding,
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const mozilla::StyleSizeOverrides& aSizeOverrides,
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mozilla::ComputeSizeFlags aFlags) override;
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/**
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* Each of our subclasses should provide its own Reflow impl:
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*/
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void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override = 0;
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protected:
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nsLeafFrame(ComputedStyle* aStyle, nsPresContext* aPresContext, ClassID aID)
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: nsIFrame(aStyle, aPresContext, aID) {}
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virtual ~nsLeafFrame();
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};
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#endif /* nsLeafFrame_h___ */
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