зеркало из https://github.com/mozilla/pjs.git
169 строки
6.3 KiB
C++
169 строки
6.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsTableRowGroupFrame_h__
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#define nsTableRowGroupFrame_h__
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#include "nscore.h"
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#include "nsContainerFrame.h"
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#include "nsIAtom.h"
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struct RowGroupReflowState;
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/**
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* nsTableRowGroupFrame is the frame that maps row groups
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* (HTML tags THEAD, TFOOT, and TBODY). This class cannot be reused
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* outside of an nsTableFrame. It assumes that its parent is an nsTableFrame, and
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* its children are nsTableRowFrames.
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*
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* @see nsTableFrame
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* @see nsTableRowFrame
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*
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* @author sclark
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*/
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class nsTableRowGroupFrame : public nsContainerFrame
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{
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public:
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/** instantiate a new instance of nsTableRowGroupFrame.
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* @param aInstancePtrResult the new object is returned in this out-param
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* @param aContent the table object to map
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* @param aParent the parent of the new frame
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*
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* @return NS_OK if the frame was properly allocated, otherwise an error code
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*/
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static nsresult NewFrame(nsIFrame** aInstancePtrResult,
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nsIContent* aContent,
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nsIFrame* aParent);
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/** @see nsIFrame::Paint */
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect);
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/** ask all children to paint themselves, without clipping (for cells with rowspan>1)
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* @see nsIFrame::Paint
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*/
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virtual void PaintChildren(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect);
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/** calls ResizeReflow for all of its child rows.
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* Rows are all set to the same width and stacked vertically.
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* <P> rows are not split unless absolutely necessary.
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*
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* @param aDesiredSize width set to width of rows, height set to
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* sum of height of rows that fit in aMaxSize.height.
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*
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* @see nsIFrame::ResizeReflow
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*/
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NS_IMETHOD ResizeReflow(nsIPresContext* aPresContext,
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nsReflowMetrics& aDesiredSize,
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const nsSize& aMaxSize,
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nsSize* aMaxElementSize,
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nsReflowStatus& aStatus);
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/** @see nsIFrame::IncrementalReflow */
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NS_IMETHOD IncrementalReflow(nsIPresContext* aPresContext,
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nsReflowMetrics& aDesiredSize,
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const nsSize& aMaxSize,
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nsReflowCommand& aReflowCommand,
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nsReflowStatus& aStatus);
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/** @see nsContainerFrame::CreateContinuingFrame */
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NS_IMETHOD CreateContinuingFrame(nsIPresContext* aPresContext,
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nsIFrame* aParent,
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nsIStyleContext* aStyleContext,
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nsIFrame*& aContinuingFrame);
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/** returns the type of the mapped row group content in aType.
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* caller MUST call release on the returned object if it is not null.
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*
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* @param aType out param filled with the type of the mapped content, or null if none.
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*
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* @return NS_OK
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*/
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NS_IMETHOD GetRowGroupType(nsIAtom *& aType);
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// For DEBUGGING Purposes Only
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NS_IMETHOD MoveTo(nscoord aX, nscoord aY);
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NS_IMETHOD SizeTo(nscoord aWidth, nscoord aHeight);
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protected:
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/** protected constructor.
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* @see NewFrame
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*/
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nsTableRowGroupFrame(nsIContent* aContent, nsIFrame* aParentFrame);
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/** protected destructor */
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~nsTableRowGroupFrame();
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nscoord GetTopMarginFor(nsIPresContext* aCX,
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RowGroupReflowState& aState,
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const nsMargin& aKidMargin);
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void PlaceChild( nsIPresContext* aPresContext,
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RowGroupReflowState& aState,
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nsIFrame* aKidFrame,
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const nsRect& aKidRect,
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nsSize* aMaxElementSize,
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nsSize& aKidMaxElementSize);
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/**
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* Reflow the frames we've already created
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*
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* @param aPresContext presentation context to use
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* @param aState current inline state
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* @return true if we successfully reflowed all the mapped children and false
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* otherwise, e.g. we pushed children to the next in flow
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*/
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PRBool ReflowMappedChildren(nsIPresContext* aPresContext,
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RowGroupReflowState& aState,
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nsSize* aMaxElementSize);
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/**
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* Try and pull-up frames from our next-in-flow
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*
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* @param aPresContext presentation context to use
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* @param aState current inline state
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* @return true if we successfully pulled-up all the children and false
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* otherwise, e.g. child didn't fit
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*/
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PRBool PullUpChildren(nsIPresContext* aPresContext,
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RowGroupReflowState& aState,
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nsSize* aMaxElementSize);
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/**
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* Create new frames for content we haven't yet mapped
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*
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* @param aPresContext presentation context to use
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* @param aState current inline state
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* @return frComplete if all content has been mapped and frNotComplete
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* if we should be continued
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*/
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nsReflowStatus ReflowUnmappedChildren(nsIPresContext* aPresContext,
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RowGroupReflowState& aState,
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nsSize* aMaxElementSize);
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private:
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nsIAtom *mType;
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};
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#endif
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