mirror of
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79 lines
3.0 KiB
C++
79 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsGridLayout2_h___
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#define nsGridLayout2_h___
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#include "mozilla/Attributes.h"
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#include "nsStackLayout.h"
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#include "nsIGridPart.h"
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#include "nsCoord.h"
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#include "nsGrid.h"
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class nsGridRowGroupLayout;
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class nsGridRowLayout;
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class nsGridRow;
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class nsBoxLayoutState;
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/**
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* The nsBoxLayout implementation for a grid.
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*/
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class nsGridLayout2 final : public nsStackLayout,
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public nsIGridPart
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{
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public:
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friend nsresult NS_NewGridLayout2(nsIPresShell* aPresShell, nsBoxLayout** aNewLayout);
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NS_DECL_ISUPPORTS_INHERITED
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NS_IMETHOD Layout(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
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virtual void IntrinsicISizesDirty(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsGridRowGroupLayout* CastToRowGroupLayout() override { return nullptr; }
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virtual nsGridLayout2* CastToGridLayout() override { return this; }
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virtual nsGrid* GetGrid(nsIFrame* aBox, int32_t* aIndex, nsGridRowLayout* aRequestor=nullptr) override;
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virtual nsIGridPart* GetParentGridPart(nsIFrame* aBox, nsIFrame** aParentBox) override {
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NS_NOTREACHED("Should not be called"); return nullptr;
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}
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virtual nsSize GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
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virtual void CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount) override { aRowCount++; }
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virtual void DirtyRows(nsIFrame* aBox, nsBoxLayoutState& aState) override { }
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virtual int32_t BuildRows(nsIFrame* aBox, nsGridRow* aRows) override;
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virtual nsMargin GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal) override;
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virtual Type GetType() override { return eGrid; }
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virtual void ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,
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nsIFrame* aPrevBox,
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const nsFrameList::Slice& aNewChildren) override;
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virtual void ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,
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const nsFrameList::Slice& aNewChildren) override;
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virtual void ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState,
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nsIFrame* aChildList) override;
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virtual void ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState,
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nsIFrame* aChildList) override;
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virtual nsIGridPart* AsGridPart() override { return this; }
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static void AddOffset(nsBoxLayoutState& aState, nsIFrame* aChild, nsSize& aSize);
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protected:
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explicit nsGridLayout2(nsIPresShell* aShell);
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virtual ~nsGridLayout2();
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nsGrid mGrid;
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private:
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void AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal);
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}; // class nsGridLayout2
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#endif
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