gecko-dev/layout/xul/nsBox.h

130 строки
3.9 KiB
C++

/* -*- 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;
#define NS_STATE_IS_ROOT NS_FRAME_STATE_BIT(24)
#define NS_STATE_SET_TO_DEBUG NS_FRAME_STATE_BIT(26)
#define NS_STATE_DEBUG_WAS_SET NS_FRAME_STATE_BIT(27)
class nsBox : public nsIFrame {
public:
friend class nsIFrame;
static void Shutdown();
virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
virtual nscoord GetFlex(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
virtual nsSize GetMinSizeForScrollArea(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
virtual bool IsCollapsed() MOZ_OVERRIDE;
virtual void SetBounds(nsBoxLayoutState& aBoxLayoutState, const nsRect& aRect,
bool aRemoveOverflowAreas = false) MOZ_OVERRIDE;
NS_IMETHOD GetBorder(nsMargin& aBorderAndPadding) MOZ_OVERRIDE;
NS_IMETHOD GetPadding(nsMargin& aBorderAndPadding) MOZ_OVERRIDE;
NS_IMETHOD GetMargin(nsMargin& aMargin) MOZ_OVERRIDE;
virtual Valignment GetVAlign() const MOZ_OVERRIDE { return vAlign_Top; }
virtual Halignment GetHAlign() const MOZ_OVERRIDE { return hAlign_Left; }
NS_IMETHOD RelayoutChildAtOrdinal(nsBoxLayoutState& aState, nsIFrame* aChild) MOZ_OVERRIDE;
#ifdef DEBUG_LAYOUT
NS_IMETHOD GetDebugBoxAt(const nsPoint& aPoint, nsIFrame** aBox);
NS_IMETHOD GetDebug(bool& aDebug) MOZ_OVERRIDE;
NS_IMETHOD SetDebug(nsBoxLayoutState& aState, bool aDebug) MOZ_OVERRIDE;
NS_IMETHOD DumpBox(FILE* out) MOZ_OVERRIDE;
NS_HIDDEN_(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;
NS_HIDDEN_(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);
protected:
#ifdef DEBUG_LAYOUT
virtual void AppendAttribute(const nsAutoString& aAttribute, const nsAutoString& aValue, nsAutoString& aResult);
virtual void ListBox(nsAutoString& aResult);
#endif
virtual void GetLayoutFlags(uint32_t& aFlags);
NS_HIDDEN_(nsresult) BeginLayout(nsBoxLayoutState& aState);
NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState);
NS_HIDDEN_(nsresult) EndLayout(nsBoxLayoutState& aState);
#ifdef DEBUG_LAYOUT
virtual void GetBoxName(nsAutoString& aName);
NS_HIDDEN_(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->DumpBox(stdout); \
NS_DebugBreak(NSDebugAssertion, str, #expr, __FILE__, __LINE__); \
}
#else
#define NS_BOX_ASSERTION(box,expr,str) {}
#endif
#endif