зеркало из https://github.com/mozilla/pjs.git
484 строки
16 KiB
C++
484 строки
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsTableCellFrame_h__
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#define nsTableCellFrame_h__
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#include "nsITableCellLayout.h"
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#include "nscore.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsTableRowFrame.h" // need to actually include this here to inline GetRowIndex
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#include "nsStyleContext.h"
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#include "nsIPercentHeightObserver.h"
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#include "nsLayoutAtoms.h"
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class nsTableFrame;
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class nsHTMLValue;
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/**
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* Additional frame-state bits
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*/
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#define NS_TABLE_CELL_CONTENT_EMPTY 0x80000000
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#define NS_TABLE_CELL_NEED_SPECIAL_REFLOW 0x40000000
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#define NS_TABLE_CELL_HAD_SPECIAL_REFLOW 0x20000000
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#define NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT 0x10000000
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#define NS_TABLE_CELL_NEED_PASS2_REFLOW 0x08000000
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/**
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* nsTableCellFrame
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* data structure to maintain information about a single table cell's frame
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*
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* NOTE: frames are not ref counted. We expose addref and release here
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* so we can change that decsion in the future. Users of nsITableCellLayout
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* should refcount correctly as if this object is being ref counted, though
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* no actual support is under the hood.
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*
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* @author sclark
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*/
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class nsTableCellFrame : public nsHTMLContainerFrame,
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public nsITableCellLayout,
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public nsIPercentHeightObserver
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{
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public:
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// default constructor supplied by the compiler
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nsTableCellFrame();
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~nsTableCellFrame();
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NS_IMETHOD Init(nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsStyleContext* aContext,
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nsIFrame* aPrevInFlow);
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#ifdef ACCESSIBILITY
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NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
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#endif
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NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
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nsIContent* aChild,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType);
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// table cells contain an area frame which does most of the work, and
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// so these functions should never be called. They assert and return
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// NS_ERROR_NOT_IMPLEMENTED
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NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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virtual void NotifyPercentHeight(const nsHTMLReflowState& aReflowState);
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virtual PRBool NeedsToObserve(const nsHTMLReflowState& aReflowState);
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/** instantiate a new instance of nsTableCellFrame.
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* @param aResult the new object is returned in this out-param
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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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friend nsresult
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NS_NewTableCellFrame(nsIPresShell* aPresShell, nsIFrame** aResult);
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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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nsFramePaintLayer aWhichLayer,
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PRUint32 aFlags = 0);
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NS_IMETHOD GetFrameForPoint(nsIPresContext* aPresContext,
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const nsPoint& aPoint,
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nsFramePaintLayer aWhichLayer,
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nsIFrame** aFrame);
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NS_IMETHOD SetSelected(nsIPresContext* aPresContext,
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nsIDOMRange *aRange,
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PRBool aSelected,
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nsSpread aSpread);
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NS_IMETHOD Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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/**
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* Get the "type" of the frame
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*
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* @see nsLayoutAtoms::tableCellFrame
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*/
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virtual nsIAtom* GetType() const;
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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virtual void VerticallyAlignChild(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nscoord aMaxAscent);
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PRBool HasVerticalAlignBaseline();
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/**
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* return the cell's specified row span. this is what was specified in the
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* content model or in the style info, and is always >= 1.
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* to get the effective row span (the actual value that applies), use GetEffectiveRowSpan()
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* @see nsTableFrame::GetEffectiveRowSpan()
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*/
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virtual PRInt32 GetRowSpan();
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// there is no set row index because row index depends on the cell's parent row only
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/*---------------- nsITableCellLayout methods ------------------------*/
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/**
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* return the cell's starting row index (starting at 0 for the first row).
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* for continued cell frames the row index is that of the cell's first-in-flow
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* and the column index (starting at 0 for the first column
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*/
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NS_IMETHOD GetCellIndexes(PRInt32 &aRowIndex, PRInt32 &aColIndex);
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/** return the mapped cell's row index (starting at 0 for the first row) */
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virtual nsresult GetRowIndex(PRInt32 &aRowIndex) const;
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/** return the previous cell having the same column index as current cell
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* returns null if no cell is present (but nsresult is still NS_OK)
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* (When used within layout, you can QI aCellLayout to get an nsIFrame*)
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*/
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NS_IMETHOD GetPreviousCellInColumn(nsITableCellLayout **aCellLayout);
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/** return the next cell having the same column index
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* returns null if no cell is present (but nsresult is still NS_OK)
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* (When used within layout, you can QI aCellLayout to get an nsIFrame*)
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*/
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NS_IMETHOD GetNextCellInColumn(nsITableCellLayout **aCellLayout);
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/**
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* return the cell's specified col span. this is what was specified in the
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* content model or in the style info, and is always >= 1.
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* to get the effective col span (the actual value that applies), use GetEffectiveColSpan()
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* @see nsTableFrame::GetEffectiveColSpan()
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*/
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virtual PRInt32 GetColSpan();
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/** return the cell's column index (starting at 0 for the first column) */
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virtual nsresult GetColIndex(PRInt32 &aColIndex) const;
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void SetColIndex(PRInt32 aColIndex);
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/** return the available width given to this frame during its last reflow */
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virtual nscoord GetPriorAvailWidth();
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/** set the available width given to this frame during its last reflow */
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virtual void SetPriorAvailWidth(nscoord aPriorAvailWidth);
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/** return the desired size returned by this frame during its last reflow */
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virtual nsSize GetDesiredSize();
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virtual nscoord GetDesiredAscent();
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/** set the desired size returned by this frame during its last reflow */
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virtual void SetDesiredSize(const nsHTMLReflowMetrics & aDesiredSize);
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/** return the maximum width of the cell */
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virtual nscoord GetMaximumWidth() const;
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/** set the maximum width of the cell */
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virtual void SetMaximumWidth(nscoord aMaximumWidth);
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/** return the MaxElement size returned by this frame during its last reflow
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* not counting reflows where MaxElementSize is not requested.
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* That is, the cell frame will always remember the last non-null MaxElementSize
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*/
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virtual nscoord GetPass1MaxElementWidth() const;
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/** set the MaxElement size returned by this frame during its last reflow.
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* should never be called with a null MaxElementSize
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*/
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virtual void SetPass1MaxElementWidth(nscoord aMaxWidth,
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nscoord aMaxElementWidth);
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PRBool GetContentEmpty();
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void SetContentEmpty(PRBool aContentEmpty);
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PRBool NeedSpecialReflow();
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void SetNeedSpecialReflow(PRBool aContentEmpty);
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PRBool HadSpecialReflow();
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void SetHadSpecialReflow(PRBool aValue);
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PRBool HasPctOverHeight();
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void SetHasPctOverHeight(PRBool aValue);
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PRBool NeedPass2Reflow() const;
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void SetNeedPass2Reflow(PRBool aValue);
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nscoord GetLastBlockHeight();
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void SetLastBlockHeight(nscoord aValue);
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// The collapse offset is (0,0) except for cells originating in a row/col which is collapsed
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void SetCollapseOffsetX(nsIPresContext* aPresContext, nscoord aXOffset);
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void SetCollapseOffsetY(nsIPresContext* aPresContext, nscoord aYOffset);
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void GetCollapseOffset(nsIPresContext* aPresContext, nsPoint& aOffset);
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nsTableCellFrame* GetNextCell() const;
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virtual nsMargin* GetBorderWidth(float aPixelsToTwips,
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nsMargin& aBorder) const;
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protected:
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/** implement abstract method on nsHTMLContainerFrame */
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virtual PRIntn GetSkipSides() const;
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virtual PRBool ParentDisablesSelection() const; //override default behavior
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private:
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// All these methods are support methods for RecalcLayoutData
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nsIFrame* GetFrameAt(nsVoidArray* aList, PRInt32 aIndex);
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protected:
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friend class nsTableRowFrame;
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virtual void PaintUnderlay(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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PRUint32& aFlags,
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const nsStyleBorder& aStyleBorder,
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const nsStylePadding& aStylePadding,
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const nsStyleTableBorder& aCellTableStyle);
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nsresult DecorateForSelection(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsStyleBackground* aStyleColor);
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protected:
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struct Bits {
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PRUint32 mColIndex:15;
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PRUint32 mLastBlockHeight:17;
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} mBits;
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PRInt32 mColIndex; // the starting column for this cell
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// XXX these could be stored as pixels for a savings of 6 x 2 bytes
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nscoord mPriorAvailWidth; // the avail width during the last reflow
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nsSize mDesiredSize; // the last desired width & height
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nscoord mDesiredAscent; // the last desired ascent
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nscoord mMaximumWidth; // the last preferred width
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nscoord mPass1MaxElementWidth; // the last max element width
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public:
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#ifdef DEBUG_TABLE_REFLOW_TIMING
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nsReflowTimer* mTimer;
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nsReflowTimer* mBlockTimer;
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#endif
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};
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inline nscoord nsTableCellFrame::GetPriorAvailWidth()
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{ return mPriorAvailWidth;}
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inline void nsTableCellFrame::SetPriorAvailWidth(nscoord aPriorAvailWidth)
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{ mPriorAvailWidth = aPriorAvailWidth;}
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inline nsSize nsTableCellFrame::GetDesiredSize()
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{ return mDesiredSize; }
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inline nscoord nsTableCellFrame::GetDesiredAscent()
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{ return mDesiredAscent; }
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inline void nsTableCellFrame::SetDesiredSize(const nsHTMLReflowMetrics & aDesiredSize)
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{
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mDesiredSize.width = aDesiredSize.width;
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mDesiredSize.height = aDesiredSize.height;
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mDesiredAscent = aDesiredSize.ascent;
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}
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inline nscoord nsTableCellFrame::GetMaximumWidth() const
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{ return mMaximumWidth; }
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inline void nsTableCellFrame::SetMaximumWidth(nscoord aMaximumWidth)
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{
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mMaximumWidth = aMaximumWidth;
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}
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inline nscoord nsTableCellFrame::GetPass1MaxElementWidth() const
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{ return mPass1MaxElementWidth; }
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inline PRBool nsTableCellFrame::GetContentEmpty()
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{
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return (mState & NS_TABLE_CELL_CONTENT_EMPTY) ==
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NS_TABLE_CELL_CONTENT_EMPTY;
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}
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inline void nsTableCellFrame::SetContentEmpty(PRBool aContentEmpty)
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{
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if (aContentEmpty) {
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mState |= NS_TABLE_CELL_CONTENT_EMPTY;
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} else {
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mState &= ~NS_TABLE_CELL_CONTENT_EMPTY;
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}
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}
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inline PRBool nsTableCellFrame::NeedSpecialReflow()
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{
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return (mState & NS_TABLE_CELL_NEED_SPECIAL_REFLOW) ==
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NS_TABLE_CELL_NEED_SPECIAL_REFLOW;
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}
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inline void nsTableCellFrame::SetNeedSpecialReflow(PRBool aValue)
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{
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if (aValue) {
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mState |= NS_TABLE_CELL_NEED_SPECIAL_REFLOW;
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} else {
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mState &= ~NS_TABLE_CELL_NEED_SPECIAL_REFLOW;
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}
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}
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inline PRBool nsTableCellFrame::HadSpecialReflow()
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{
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return (mState & NS_TABLE_CELL_HAD_SPECIAL_REFLOW) ==
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NS_TABLE_CELL_HAD_SPECIAL_REFLOW;
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}
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inline void nsTableCellFrame::SetHadSpecialReflow(PRBool aValue)
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{
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if (aValue) {
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mState |= NS_TABLE_CELL_HAD_SPECIAL_REFLOW;
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} else {
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mState &= ~NS_TABLE_CELL_HAD_SPECIAL_REFLOW;
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}
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}
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inline PRBool nsTableCellFrame::HasPctOverHeight()
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{
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return (mState & NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT) ==
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NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT;
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}
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inline void nsTableCellFrame::SetHasPctOverHeight(PRBool aValue)
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{
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if (aValue) {
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mState |= NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT;
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} else {
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mState &= ~NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT;
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}
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}
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inline PRBool nsTableCellFrame::NeedPass2Reflow() const
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{
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return (mState & NS_TABLE_CELL_NEED_PASS2_REFLOW) ==
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NS_TABLE_CELL_NEED_PASS2_REFLOW;
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}
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inline void nsTableCellFrame::SetNeedPass2Reflow(PRBool aValue)
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{
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if (aValue) {
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mState |= NS_TABLE_CELL_NEED_PASS2_REFLOW;
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} else {
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mState &= ~NS_TABLE_CELL_NEED_PASS2_REFLOW;
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}
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}
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inline nscoord nsTableCellFrame::GetLastBlockHeight()
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{
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return (nscoord)mBits.mLastBlockHeight;
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}
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inline void nsTableCellFrame::SetLastBlockHeight(nscoord aValue)
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{
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mBits.mLastBlockHeight = aValue;
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}
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// nsBCTableCellFrame
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class nsBCTableCellFrame : public nsTableCellFrame
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{
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public:
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nsBCTableCellFrame();
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~nsBCTableCellFrame();
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virtual nsIAtom* GetType() const;
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virtual nsMargin* GetBorderWidth(float aPixelsToTwips,
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nsMargin& aBorder) const;
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nscoord GetBorderWidth(PRUint8 aSide) const;
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void SetBorderWidth(const nsMargin& aBorder);
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void SetBorderWidth(PRUint8 aSide, nscoord aPixelValue);
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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protected:
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virtual void PaintUnderlay(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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PRUint32& aFlags,
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const nsStyleBorder& aStyleBorder,
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const nsStylePadding& aStylePadding,
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const nsStyleTableBorder& aCellTableStyle);
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private:
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PRUint32 mTopBorder: 8;
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PRUint32 mRightBorder: 8;
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PRUint32 mBottomBorder: 8;
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PRUint32 mLeftBorder: 8;
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};
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#endif
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