зеркало из https://github.com/mozilla/gecko-dev.git
259 строки
10 KiB
C++
259 строки
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
#ifndef nsTableRowFrame_h__
|
|
#define nsTableRowFrame_h__
|
|
|
|
#include "nscore.h"
|
|
#include "nsHTMLContainerFrame.h"
|
|
|
|
class nsTableFrame;
|
|
class nsTableCellFrame;
|
|
struct RowReflowState;
|
|
|
|
/**
|
|
* nsTableRowFrame is the frame that maps table rows
|
|
* (HTML tag TR). This class cannot be reused
|
|
* outside of an nsTableRowGroupFrame. It assumes that its parent is an nsTableRowGroupFrame,
|
|
* and its children are nsTableCellFrames.
|
|
*
|
|
* @see nsTableFrame
|
|
* @see nsTableRowGroupFrame
|
|
* @see nsTableCellFrame
|
|
*/
|
|
class nsTableRowFrame : public nsHTMLContainerFrame
|
|
{
|
|
public:
|
|
/** Initialization of data */
|
|
NS_IMETHOD InitChildren(PRInt32 aRowIndex=-1);
|
|
|
|
void ResetInitChildren();
|
|
|
|
/** instantiate a new instance of nsTableRowFrame.
|
|
* @param aResult the new object is returned in this out-param
|
|
* @param aContent the table object to map
|
|
* @param aParent the parent of the new frame
|
|
*
|
|
* @return NS_OK if the frame was properly allocated, otherwise an error code
|
|
*/
|
|
friend nsresult
|
|
NS_NewTableRowFrame(nsIFrame*& aResult);
|
|
|
|
NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aChildList);
|
|
|
|
/** @see nsIFrame::Paint */
|
|
NS_IMETHOD Paint(nsIPresContext& aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer);
|
|
|
|
|
|
/** ask all children to paint themselves, without clipping (for cells with rowspan>1)
|
|
* @see nsIFrame::Paint
|
|
*/
|
|
virtual void PaintChildren(nsIPresContext& aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer);
|
|
|
|
/** calls Reflow for all of its child cells.
|
|
* Cells with rowspan=1 are all set to the same height and stacked horizontally.
|
|
* <P> Cells are not split unless absolutely necessary.
|
|
* <P> Cells are resized in nsTableFrame::BalanceColumnWidths
|
|
* and nsTableFrame::ShrinkWrapChildren
|
|
*
|
|
* @param aDesiredSize width set to width of the sum of the cells, height set to
|
|
* height of cells with rowspan=1.
|
|
*
|
|
* @see nsIFrame::Reflow
|
|
* @see nsTableFrame::BalanceColumnWidths
|
|
* @see nsTableFrame::ShrinkWrapChildren
|
|
*/
|
|
NS_IMETHOD Reflow(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
virtual void DidResize(nsIPresContext& aPresContext,
|
|
const nsHTMLReflowState& aReflowState);
|
|
|
|
/** @see nsContainerFrame::CreateContinuingFrame */
|
|
NS_IMETHOD CreateContinuingFrame(nsIPresContext& aPresContext,
|
|
nsIFrame* aParent,
|
|
nsIStyleContext* aStyleContext,
|
|
nsIFrame*& aContinuingFrame);
|
|
|
|
NS_IMETHOD GetFrameName(nsString& aResult) const;
|
|
|
|
/** set mTallestCell to 0 in anticipation of recalculating it */
|
|
void ResetMaxChildHeight();
|
|
|
|
/** set mTallestCell to max(mTallestCell, aChildHeight) */
|
|
void SetMaxChildHeight(nscoord aChildHeight, nscoord aCellTopMargin, nscoord aCellBottomMargin);
|
|
|
|
/** returns the tallest child in this row (ignoring any cell with rowspans) */
|
|
nscoord GetTallestChild() const;
|
|
nscoord GetChildMaxTopMargin() const;
|
|
nscoord GetChildMaxBottomMargin() const;
|
|
|
|
PRInt32 GetMaxColumns() const;
|
|
|
|
/** returns the ordinal position of this row in its table */
|
|
virtual PRInt32 GetRowIndex() const;
|
|
|
|
/** set this row's starting row index */
|
|
void SetRowIndex (int aRowIndex);
|
|
|
|
virtual PRBool Contains(const nsPoint& aPoint);
|
|
|
|
protected:
|
|
|
|
/** protected constructor.
|
|
* @see NewFrame
|
|
*/
|
|
nsTableRowFrame();
|
|
|
|
/** implement abstract method on nsHTMLContainerFrame */
|
|
virtual PRIntn GetSkipSides() const;
|
|
|
|
/** Incremental Reflow attempts to do column balancing with the minimum number of reflow
|
|
* commands to child elements. This is done by processing the reflow command,
|
|
* rebalancing column widths (if necessary), then comparing the resulting column widths
|
|
* to the prior column widths and reflowing only those cells that require a reflow.
|
|
*
|
|
* @see Reflow
|
|
*/
|
|
NS_IMETHOD IncrementalReflow(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
NS_IMETHOD IR_TargetIsChild(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsIFrame * aNextFrame);
|
|
|
|
NS_IMETHOD IR_TargetIsMe(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
NS_IMETHOD IR_CellInserted(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableCellFrame * aInsertedFrame,
|
|
PRBool aReplace);
|
|
|
|
NS_IMETHOD IR_CellAppended(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableCellFrame * aAppendedFrame);
|
|
|
|
NS_IMETHOD IR_DidAppendCell(nsTableCellFrame *aRowFrame);
|
|
|
|
NS_IMETHOD IR_CellRemoved(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableCellFrame * aDeletedFrame);
|
|
|
|
NS_IMETHOD IR_StyleChanged(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
// row-specific methods
|
|
|
|
void GetMinRowSpan(nsTableFrame *aTableFrame);
|
|
|
|
void FixMinCellHeight(nsTableFrame *aTableFrame);
|
|
|
|
NS_IMETHOD RecoverState(nsIPresContext& aPresContext,
|
|
RowReflowState& aState,
|
|
nsIFrame* aKidFrame,
|
|
nscoord& aMaxCellTopMargin,
|
|
nscoord& aMaxCellBottomMargin);
|
|
|
|
void PlaceChild(nsIPresContext& aPresContext,
|
|
RowReflowState& aState,
|
|
nsIFrame* aKidFrame,
|
|
const nsRect& aKidRect,
|
|
nsSize* aMaxElementSize,
|
|
nsSize* aKidMaxElementSize);
|
|
|
|
nscoord ComputeCellXOffset(const RowReflowState& aState,
|
|
nsIFrame* aKidFrame,
|
|
const nsMargin& aKidMargin) const;
|
|
nscoord ComputeCellAvailWidth(const RowReflowState& aState,
|
|
nsIFrame* aKidFrame) const;
|
|
|
|
nsIFrame * GetFirstChildForDirection(PRUint8 aDir);
|
|
nsIFrame * GetNextChildForDirection(PRUint8 aDir, nsIFrame *aCurrentChild);
|
|
|
|
/**
|
|
* Called for a resize reflow. Typically because the column widths have
|
|
* changed. Reflows all the existing table cell frames
|
|
*/
|
|
NS_IMETHOD ResizeReflow(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
/**
|
|
* Called for the initial reflow. Creates each table cell frame, and
|
|
* reflows the cell frame to gets its minimum and maximum sizes
|
|
*/
|
|
NS_IMETHOD InitialReflow(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
RowReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableCellFrame * aStartFrame,
|
|
PRBool aDoSiblings);
|
|
|
|
private:
|
|
PRInt32 mRowIndex;
|
|
nscoord mTallestCell; // not my height, but the height of my tallest child
|
|
nscoord mCellMaxTopMargin;
|
|
nscoord mCellMaxBottomMargin;
|
|
PRInt32 mMinRowSpan; // the smallest row span among all my child cells
|
|
PRBool mInitializedChildren; // PR_TRUE if child cells have been initialized
|
|
// (for now, that means "added to the table", and
|
|
// is NOT the same as having nsIFrame::Init() called.)
|
|
|
|
};
|
|
|
|
inline PRInt32 nsTableRowFrame::GetRowIndex() const
|
|
{
|
|
NS_ASSERTION(0<=mRowIndex, "bad state: row index");
|
|
return (mRowIndex);
|
|
}
|
|
|
|
inline void nsTableRowFrame::SetRowIndex (int aRowIndex)
|
|
{
|
|
mRowIndex = aRowIndex;
|
|
}
|
|
|
|
inline void nsTableRowFrame::ResetInitChildren()
|
|
{ mInitializedChildren=PR_FALSE; }
|
|
|
|
#endif
|