layout/xul/nsBoxLayout.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsBoxLayout_h___
   7 #define nsBoxLayout_h___
   8
   9 #include "nsISupports.h"
  10 #include "nsCoord.h"
  11 #include "nsFrameList.h"
  12
  13 class nsIFrame;
  14 class nsBoxLayoutState;
  15 struct nsSize;
  16 struct nsMargin;
  17
  18 #define NS_BOX_LAYOUT_IID \
  19 { 0x09d522a7, 0x304c, 0x4137, \
  20  { 0xaf, 0xc9, 0xe0, 0x80, 0x2e, 0x89, 0xb7, 0xe8 } }
  21
  22 class nsIGridPart;
  23
  24 class nsBoxLayout : public nsISupports {
  25
  26 protected:
  27   virtual ~nsBoxLayout() {}
  28
  29 public:
  30
  31   nsBoxLayout() {}
  32
  33   NS_DECL_ISUPPORTS
  34
  35   NS_DECLARE_STATIC_IID_ACCESSOR(NS_BOX_LAYOUT_IID)
  36
  37   NS_IMETHOD Layout(nsIFrame* aBox, nsBoxLayoutState& aState);
  38
  39   virtual nsSize GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState);
  40   virtual nsSize GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState);
  41   virtual nsSize GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState);
  42   virtual nscoord GetAscent(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState);
  43   virtual void ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,
  44                                 nsIFrame* aPrevBox,
  45                                 const nsFrameList::Slice& aNewChildren) {}
  46   virtual void ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,
  47                                 const nsFrameList::Slice& aNewChildren) {}
  48   virtual void ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState, nsIFrame* aChildList) {}
  49   virtual void ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState, nsIFrame* aChildList) {}
  50   virtual void IntrinsicISizesDirty(nsIFrame* aBox, nsBoxLayoutState& aState) {}
  51
  52   virtual void AddBorderAndPadding(nsIFrame* aBox, nsSize& aSize);
  53   virtual void AddMargin(nsIFrame* aChild, nsSize& aSize);
  54   virtual void AddMargin(nsSize& aSize, const nsMargin& aMargin);
  55
  56   virtual nsIGridPart* AsGridPart() { return nullptr; }
  57
  58   static void AddLargestSize(nsSize& aSize, const nsSize& aToAdd);
  59   static void AddSmallestSize(nsSize& aSize, const nsSize& aToAdd);
  60 };
  61
  62 NS_DEFINE_STATIC_IID_ACCESSOR(nsBoxLayout, NS_BOX_LAYOUT_IID)
  63
  64 #endif
  65