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4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
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11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla Communicator client code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
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37 :
38 : #ifndef nsSprocketLayout_h___
39 : #define nsSprocketLayout_h___
40 :
41 : #include "nsBoxLayout.h"
42 : #include "nsCOMPtr.h"
43 :
44 : class nsBoxSize
45 : {
46 : public:
47 :
48 : nsBoxSize();
49 :
50 : nscoord pref;
51 : nscoord min;
52 : nscoord max;
53 : nscoord flex;
54 : nscoord left;
55 : nscoord right;
56 : bool collapsed;
57 : bool bogus;
58 :
59 : nsBoxSize* next;
60 :
61 : void* operator new(size_t sz, nsBoxLayoutState& aState) CPP_THROW_NEW;
62 : void operator delete(void* aPtr, size_t sz);
63 : };
64 :
65 : class nsComputedBoxSize
66 : {
67 : public:
68 : nsComputedBoxSize();
69 :
70 : nscoord size;
71 : bool valid;
72 : bool resized;
73 : nsComputedBoxSize* next;
74 :
75 : void* operator new(size_t sz, nsBoxLayoutState& aState) CPP_THROW_NEW;
76 : void operator delete(void* aPtr, size_t sz);
77 : };
78 :
79 : #define GET_WIDTH(size, isHorizontal) (isHorizontal ? size.width : size.height)
80 : #define GET_HEIGHT(size, isHorizontal) (isHorizontal ? size.height : size.width)
81 : #define GET_X(size, isHorizontal) (isHorizontal ? size.x : size.y)
82 : #define GET_Y(size, isHorizontal) (isHorizontal ? size.y : size.x)
83 : #define GET_COORD(aX, aY, isHorizontal) (isHorizontal ? aX : aY)
84 :
85 : #define SET_WIDTH(size, coord, isHorizontal) if (isHorizontal) { (size).width = (coord); } else { (size).height = (coord); }
86 : #define SET_HEIGHT(size, coord, isHorizontal) if (isHorizontal) { (size).height = (coord); } else { (size).width = (coord); }
87 : #define SET_X(size, coord, isHorizontal) if (isHorizontal) { (size).x = (coord); } else { (size).y = (coord); }
88 : #define SET_Y(size, coord, isHorizontal) if (isHorizontal) { (size).y = (coord); } else { (size).x = (coord); }
89 :
90 : #define SET_COORD(aX, aY, coord, isHorizontal) if (isHorizontal) { aX = (coord); } else { aY = (coord); }
91 :
92 : nsresult NS_NewSprocketLayout(nsIPresShell* aPresShell, nsCOMPtr<nsBoxLayout>& aNewLayout);
93 :
94 0 : class nsSprocketLayout : public nsBoxLayout {
95 :
96 : public:
97 :
98 : friend nsresult NS_NewSprocketLayout(nsIPresShell* aPresShell, nsCOMPtr<nsBoxLayout>& aNewLayout);
99 : static void Shutdown();
100 :
101 : NS_IMETHOD Layout(nsIBox* aBox, nsBoxLayoutState& aState);
102 :
103 : virtual nsSize GetPrefSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState);
104 : virtual nsSize GetMinSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState);
105 : virtual nsSize GetMaxSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState);
106 : virtual nscoord GetAscent(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState);
107 :
108 : nsSprocketLayout();
109 :
110 : static bool IsHorizontal(nsIBox* aBox);
111 :
112 : static void SetLargestSize(nsSize& aSize1, const nsSize& aSize2, bool aIsHorizontal);
113 : static void SetSmallestSize(nsSize& aSize1, const nsSize& aSize2, bool aIsHorizontal);
114 :
115 : static void AddLargestSize(nsSize& aSize, const nsSize& aSizeToAdd, bool aIsHorizontal);
116 : static void AddSmallestSize(nsSize& aSize, const nsSize& aSizeToAdd, bool aIsHorizontal);
117 : static void AddCoord(nscoord& aCoord, nscoord aCoordToAdd);
118 :
119 : protected:
120 :
121 :
122 : void ComputeChildsNextPosition(nsIBox* aBox,
123 : const nscoord& aCurX,
124 : const nscoord& aCurY,
125 : nscoord& aNextX,
126 : nscoord& aNextY,
127 : const nsRect& aChildSize);
128 :
129 : void ChildResized(nsIBox* aBox,
130 : nsBoxLayoutState& aState,
131 : nsIBox* aChild,
132 : nsBoxSize* aChildBoxSize,
133 : nsComputedBoxSize* aChildComputedBoxSize,
134 : nsBoxSize* aBoxSizes,
135 : nsComputedBoxSize* aComputedBoxSizes,
136 : const nsRect& aChildLayoutRect,
137 : nsRect& aChildActualRect,
138 : nsRect& aContainingRect,
139 : PRInt32 aFlexes,
140 : bool& aFinished);
141 :
142 : void AlignChildren(nsIBox* aBox,
143 : nsBoxLayoutState& aState,
144 : bool* aNeedsRedraw);
145 :
146 : virtual void ComputeChildSizes(nsIBox* aBox,
147 : nsBoxLayoutState& aState,
148 : nscoord& aGivenSize,
149 : nsBoxSize* aBoxSizes,
150 : nsComputedBoxSize*& aComputedBoxSizes);
151 :
152 :
153 : virtual void PopulateBoxSizes(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsBoxSize*& aBoxSizes, nscoord& aMinSize, nscoord& aMaxSize, PRInt32& aFlexes);
154 :
155 : virtual void InvalidateComputedSizes(nsComputedBoxSize* aComputedBoxSizes);
156 :
157 : virtual bool GetDefaultFlex(PRInt32& aFlex);
158 :
159 : virtual void GetFrameState(nsIBox* aBox, nsFrameState& aState);
160 :
161 : private:
162 :
163 :
164 : // because the sprocket layout manager has no instance variables. We
165 : // can make a static one and reuse it everywhere.
166 : static nsBoxLayout* gInstance;
167 :
168 : };
169 :
170 : #endif
171 :
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