зеркало из https://github.com/mozilla/gecko-dev.git
92 строки
3.1 KiB
C++
92 строки
3.1 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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#ifndef nsBox_h___
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#define nsBox_h___
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#include "mozilla/Attributes.h"
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#include "mozilla/StaticPtr.h"
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#include "nsIFrame.h"
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class nsITheme;
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class nsBox : public nsIFrame {
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public:
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friend class nsIFrame;
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static void Shutdown();
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virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetXULMaxSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nscoord GetXULFlex() override;
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virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetXULMinSizeForScrollArea(
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nsBoxLayoutState& aBoxLayoutState) override;
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virtual bool IsXULCollapsed() override;
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virtual void SetXULBounds(nsBoxLayoutState& aBoxLayoutState,
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const nsRect& aRect,
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bool aRemoveOverflowAreas = false) override;
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virtual nsresult GetXULBorder(nsMargin& aBorderAndPadding) override;
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virtual nsresult GetXULPadding(nsMargin& aBorderAndPadding) override;
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virtual nsresult GetXULMargin(nsMargin& aMargin) override;
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virtual Valignment GetXULVAlign() const override { return vAlign_Top; }
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virtual Halignment GetXULHAlign() const override { return hAlign_Left; }
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virtual nsresult XULRelayoutChildAtOrdinal(nsIFrame* aChild) override;
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nsBox(ClassID aID);
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virtual ~nsBox();
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/**
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* Returns true if this box clips its children, e.g., if this box is an
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* scrollbox.
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*/
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virtual bool DoesClipChildren();
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virtual bool ComputesOwnOverflowArea() = 0;
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nsresult SyncLayout(nsBoxLayoutState& aBoxLayoutState);
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bool DoesNeedRecalc(const nsSize& aSize);
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bool DoesNeedRecalc(nscoord aCoord);
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void SizeNeedsRecalc(nsSize& aSize);
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void CoordNeedsRecalc(nscoord& aCoord);
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void AddBorderAndPadding(nsSize& aSize);
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static void AddBorderAndPadding(nsIFrame* aBox, nsSize& aSize);
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static void AddMargin(nsIFrame* aChild, nsSize& aSize);
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static void AddMargin(nsSize& aSize, const nsMargin& aMargin);
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static nsSize BoundsCheckMinMax(const nsSize& aMinSize,
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const nsSize& aMaxSize);
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static nsSize BoundsCheck(const nsSize& aMinSize, const nsSize& aPrefSize,
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const nsSize& aMaxSize);
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static nscoord BoundsCheck(nscoord aMinSize, nscoord aPrefSize,
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nscoord aMaxSize);
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static nsIFrame* GetChildXULBox(const nsIFrame* aFrame);
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static nsIFrame* GetNextXULBox(const nsIFrame* aFrame);
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static nsIFrame* GetParentXULBox(const nsIFrame* aFrame);
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protected:
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nsresult BeginXULLayout(nsBoxLayoutState& aState);
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NS_IMETHOD DoXULLayout(nsBoxLayoutState& aBoxLayoutState);
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nsresult EndXULLayout(nsBoxLayoutState& aState);
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static bool gGotTheme;
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static mozilla::StaticRefPtr<nsITheme> gTheme;
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enum eMouseThrough { unset, never, always };
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};
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#endif
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