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/* -*- 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/. */
#ifndef nsBox_h___
#define nsBox_h___
#include "mozilla/Attributes.h"
#include "nsIFrame.h"
class nsITheme;
class nsBox : public nsIFrame {
public:
friend class nsIFrame;
static void Shutdown();
virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override;
virtual nsSize GetXULMaxSize(nsBoxLayoutState& aBoxLayoutState) override;
virtual nscoord GetXULFlex() override;
virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aBoxLayoutState) override;
virtual nsSize GetXULMinSizeForScrollArea(nsBoxLayoutState& aBoxLayoutState) override;
virtual bool IsXULCollapsed() override;
virtual void SetXULBounds(nsBoxLayoutState& aBoxLayoutState, const nsRect& aRect,
bool aRemoveOverflowAreas = false) override;
virtual nsresult GetXULBorder(nsMargin& aBorderAndPadding) override;
virtual nsresult GetXULPadding(nsMargin& aBorderAndPadding) override;
virtual nsresult GetXULMargin(nsMargin& aMargin) override;
virtual Valignment GetXULVAlign() const override { return vAlign_Top; }
virtual Halignment GetXULHAlign() const override { return hAlign_Left; }
virtual nsresult XULRelayoutChildAtOrdinal(nsIFrame* aChild) override;
#ifdef DEBUG_LAYOUT
NS_IMETHOD GetDebugBoxAt(const nsPoint& aPoint, nsIFrame** aBox);
virtual nsresult GetXULDebug(bool& aDebug) override;
virtual nsresult SetXULDebug(nsBoxLayoutState& aState, bool aDebug) override;
virtual nsresult XULDumpBox(FILE* out) override;
void PropagateDebug(nsBoxLayoutState& aState);
#endif
nsBox();
virtual ~nsBox();
/**
* Returns true if this box clips its children, e.g., if this box is an sc
rollbox.
*/
virtual bool DoesClipChildren();
virtual bool ComputesOwnOverflowArea() = 0;
nsresult SyncLayout(nsBoxLayoutState& aBoxLayoutState);
bool DoesNeedRecalc(const nsSize& aSize);
bool DoesNeedRecalc(nscoord aCoord);
void SizeNeedsRecalc(nsSize& aSize);
void CoordNeedsRecalc(nscoord& aCoord);
void AddBorderAndPadding(nsSize& aSize);
static void AddBorderAndPadding(nsIFrame* aBox, nsSize& aSize);
static void AddMargin(nsIFrame* aChild, nsSize& aSize);
static void AddMargin(nsSize& aSize, const nsMargin& aMargin);
static nsSize BoundsCheckMinMax(const nsSize& aMinSize, const nsSize& aMaxSize);
static nsSize BoundsCheck(const nsSize& aMinSize, const nsSize& aPrefSize, const nsSize& aMaxSize);
static nscoord BoundsCheck(nscoord aMinSize, nscoord aPrefSize, nscoord aMaxSize);
static nsIFrame* GetChildXULBox(const nsIFrame* aFrame);
static nsIFrame* GetNextXULBox(const nsIFrame* aFrame);
static nsIFrame* GetParentXULBox(const nsIFrame* aFrame);
protected:
#ifdef DEBUG_LAYOUT
virtual void AppendAttribute(const nsAutoString& aAttribute, const nsAutoString& aValue, nsAutoString& aResult);
virtual void ListBox(nsAutoString& aResult);
#endif
nsresult BeginXULLayout(nsBoxLayoutState& aState);
NS_IMETHOD DoXULLayout(nsBoxLayoutState& aBoxLayoutState);
nsresult EndXULLayout(nsBoxLayoutState& aState);
#ifdef DEBUG_LAYOUT
virtual void GetBoxName(nsAutoString& aName);
void PropagateDebug(nsBoxLayoutState& aState);
#endif
static bool gGotTheme;
static nsITheme* gTheme;
enum eMouseThrough {
unset,
never,
always
};
private:
//nscoord mX;
//nscoord mY;
};
#ifdef DEBUG_LAYOUT
#define NS_BOX_ASSERTION(box,expr,str) \
if (!(expr)) { \
box->XULDumpBox(stdout); \
NS_DebugBreak(NSDebugAssertion, str, #expr, __FILE__, __LINE__); \
}
#else
#define NS_BOX_ASSERTION(box,expr,str) {}
#endif
#endif
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