1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/nsSprocketLayout.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,142 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef nsSprocketLayout_h___
1.10 +#define nsSprocketLayout_h___
1.11 +
1.12 +#include "mozilla/Attributes.h"
1.13 +#include "nsBoxLayout.h"
1.14 +#include "nsCOMPtr.h"
1.15 +#include "nsIFrame.h"
1.16 +
1.17 +class nsBoxSize
1.18 +{
1.19 +public:
1.20 +
1.21 + nsBoxSize();
1.22 +
1.23 + nscoord pref;
1.24 + nscoord min;
1.25 + nscoord max;
1.26 + nscoord flex;
1.27 + nscoord left;
1.28 + nscoord right;
1.29 + bool collapsed;
1.30 + bool bogus;
1.31 +
1.32 + nsBoxSize* next;
1.33 +
1.34 + void* operator new(size_t sz, nsBoxLayoutState& aState) CPP_THROW_NEW;
1.35 + void operator delete(void* aPtr, size_t sz);
1.36 +};
1.37 +
1.38 +class nsComputedBoxSize
1.39 +{
1.40 +public:
1.41 + nsComputedBoxSize();
1.42 +
1.43 + nscoord size;
1.44 + bool valid;
1.45 + bool resized;
1.46 + nsComputedBoxSize* next;
1.47 +
1.48 + void* operator new(size_t sz, nsBoxLayoutState& aState) CPP_THROW_NEW;
1.49 + void operator delete(void* aPtr, size_t sz);
1.50 +};
1.51 +
1.52 +#define GET_WIDTH(size, isHorizontal) (isHorizontal ? size.width : size.height)
1.53 +#define GET_HEIGHT(size, isHorizontal) (isHorizontal ? size.height : size.width)
1.54 +#define GET_X(size, isHorizontal) (isHorizontal ? size.x : size.y)
1.55 +#define GET_Y(size, isHorizontal) (isHorizontal ? size.y : size.x)
1.56 +#define GET_COORD(aX, aY, isHorizontal) (isHorizontal ? aX : aY)
1.57 +
1.58 +#define SET_WIDTH(size, coord, isHorizontal) if (isHorizontal) { (size).width = (coord); } else { (size).height = (coord); }
1.59 +#define SET_HEIGHT(size, coord, isHorizontal) if (isHorizontal) { (size).height = (coord); } else { (size).width = (coord); }
1.60 +#define SET_X(size, coord, isHorizontal) if (isHorizontal) { (size).x = (coord); } else { (size).y = (coord); }
1.61 +#define SET_Y(size, coord, isHorizontal) if (isHorizontal) { (size).y = (coord); } else { (size).x = (coord); }
1.62 +
1.63 +#define SET_COORD(aX, aY, coord, isHorizontal) if (isHorizontal) { aX = (coord); } else { aY = (coord); }
1.64 +
1.65 +nsresult NS_NewSprocketLayout(nsIPresShell* aPresShell, nsCOMPtr<nsBoxLayout>& aNewLayout);
1.66 +
1.67 +class nsSprocketLayout : public nsBoxLayout {
1.68 +
1.69 +public:
1.70 +
1.71 + friend nsresult NS_NewSprocketLayout(nsIPresShell* aPresShell, nsCOMPtr<nsBoxLayout>& aNewLayout);
1.72 + static void Shutdown();
1.73 +
1.74 + NS_IMETHOD Layout(nsIFrame* aBox, nsBoxLayoutState& aState) MOZ_OVERRIDE;
1.75 +
1.76 + virtual nsSize GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
1.77 + virtual nsSize GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
1.78 + virtual nsSize GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
1.79 + virtual nscoord GetAscent(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
1.80 +
1.81 + nsSprocketLayout();
1.82 +
1.83 + static bool IsHorizontal(nsIFrame* aBox);
1.84 +
1.85 + static void SetLargestSize(nsSize& aSize1, const nsSize& aSize2, bool aIsHorizontal);
1.86 + static void SetSmallestSize(nsSize& aSize1, const nsSize& aSize2, bool aIsHorizontal);
1.87 +
1.88 + static void AddLargestSize(nsSize& aSize, const nsSize& aSizeToAdd, bool aIsHorizontal);
1.89 + static void AddSmallestSize(nsSize& aSize, const nsSize& aSizeToAdd, bool aIsHorizontal);
1.90 + static void AddCoord(nscoord& aCoord, nscoord aCoordToAdd);
1.91 +
1.92 +protected:
1.93 +
1.94 +
1.95 + void ComputeChildsNextPosition(nsIFrame* aBox,
1.96 + const nscoord& aCurX,
1.97 + const nscoord& aCurY,
1.98 + nscoord& aNextX,
1.99 + nscoord& aNextY,
1.100 + const nsRect& aChildSize);
1.101 +
1.102 + void ChildResized(nsIFrame* aBox,
1.103 + nsBoxLayoutState& aState,
1.104 + nsIFrame* aChild,
1.105 + nsBoxSize* aChildBoxSize,
1.106 + nsComputedBoxSize* aChildComputedBoxSize,
1.107 + nsBoxSize* aBoxSizes,
1.108 + nsComputedBoxSize* aComputedBoxSizes,
1.109 + const nsRect& aChildLayoutRect,
1.110 + nsRect& aChildActualRect,
1.111 + nsRect& aContainingRect,
1.112 + int32_t aFlexes,
1.113 + bool& aFinished);
1.114 +
1.115 + void AlignChildren(nsIFrame* aBox,
1.116 + nsBoxLayoutState& aState);
1.117 +
1.118 + virtual void ComputeChildSizes(nsIFrame* aBox,
1.119 + nsBoxLayoutState& aState,
1.120 + nscoord& aGivenSize,
1.121 + nsBoxSize* aBoxSizes,
1.122 + nsComputedBoxSize*& aComputedBoxSizes);
1.123 +
1.124 +
1.125 + virtual void PopulateBoxSizes(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState,
1.126 + nsBoxSize*& aBoxSizes, nscoord& aMinSize,
1.127 + nscoord& aMaxSize, int32_t& aFlexes);
1.128 +
1.129 + virtual void InvalidateComputedSizes(nsComputedBoxSize* aComputedBoxSizes);
1.130 +
1.131 + virtual bool GetDefaultFlex(int32_t& aFlex);
1.132 +
1.133 + virtual void GetFrameState(nsIFrame* aBox, nsFrameState& aState);
1.134 +
1.135 +private:
1.136 +
1.137 +
1.138 + // because the sprocket layout manager has no instance variables. We
1.139 + // can make a static one and reuse it everywhere.
1.140 + static nsBoxLayout* gInstance;
1.141 +
1.142 +};
1.143 +
1.144 +#endif
1.145 +
