The Tor Browser: layout/xul/grid/nsGridLayout2.h@925c144e1f1f

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef nsGridLayout2_h___

     8 #define nsGridLayout2_h___

    10 #include "mozilla/Attributes.h"

    11 #include "nsStackLayout.h"

    12 #include "nsIGridPart.h"

    13 #include "nsCoord.h"

    14 #include "nsGrid.h"

    16 class nsIPresContext;

    17 class nsGridRowGroupLayout;

    18 class nsGridRowLayout;

    19 class nsGridRow;

    20 class nsBoxLayoutState;

    21 class nsGridCell;

    23 /**

    24  * The nsBoxLayout implementation for a grid.

    25  */

    26 class nsGridLayout2 : public nsStackLayout,

    27                       public nsIGridPart

    28 {

    29 public:

    31   friend nsresult NS_NewGridLayout2(nsIPresShell* aPresShell, nsBoxLayout** aNewLayout);

    33   NS_DECL_ISUPPORTS_INHERITED

    35   NS_IMETHOD Layout(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;

    36   virtual void IntrinsicWidthsDirty(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;

    38   virtual nsGridRowGroupLayout* CastToRowGroupLayout() MOZ_OVERRIDE { return nullptr; }

    39   virtual nsGridLayout2* CastToGridLayout() MOZ_OVERRIDE { return this; }

    40   virtual nsGrid* GetGrid(nsIFrame* aBox, int32_t* aIndex, nsGridRowLayout* aRequestor=nullptr) MOZ_OVERRIDE;

    41   virtual nsIGridPart* GetParentGridPart(nsIFrame* aBox, nsIFrame** aParentBox) MOZ_OVERRIDE {

    42     NS_NOTREACHED("Should not be called"); return nullptr;

    43   }

    44   virtual nsSize GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;

    45   virtual nsSize GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;

    46   virtual nsSize GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;

    47   virtual void CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount) MOZ_OVERRIDE { aRowCount++; }

    48   virtual void DirtyRows(nsIFrame* aBox, nsBoxLayoutState& aState) MOZ_OVERRIDE { }

    49   virtual int32_t BuildRows(nsIFrame* aBox, nsGridRow* aRows) MOZ_OVERRIDE;

    50   virtual nsMargin GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal) MOZ_OVERRIDE;

    51   virtual Type GetType() MOZ_OVERRIDE { return eGrid; }

    52   virtual void ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,

    53                                 nsIFrame* aPrevBox,

    54                                 const nsFrameList::Slice& aNewChildren) MOZ_OVERRIDE;

    55   virtual void ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,

    56                                 const nsFrameList::Slice& aNewChildren) MOZ_OVERRIDE;

    57   virtual void ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState,

    58                                nsIFrame* aChildList) MOZ_OVERRIDE;

    59   virtual void ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState,

    60                            nsIFrame* aChildList) MOZ_OVERRIDE;

    62   virtual nsIGridPart* AsGridPart() MOZ_OVERRIDE { return this; }

    64   static void AddOffset(nsBoxLayoutState& aState, nsIFrame* aChild, nsSize& aSize);

    66 protected:

    68   nsGridLayout2(nsIPresShell* aShell);

    69   nsGrid mGrid;

    71 private:

    72   void AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal);

    75 }; // class nsGridLayout2

    78 #endif

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