зеркало из https://github.com/mozilla/gecko-dev.git
225 строки
8.2 KiB
C++
225 строки
8.2 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: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsTableColFrame_h__
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#define nsTableColFrame_h__
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#include "nscore.h"
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#include "nsContainerFrame.h"
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class nsVoidArray;
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class nsTableCellFrame;
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// this is used to index arrays of widths in nsColFrame and to group important widths
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// for calculations. It is important that the order: min, desired, fixed be maintained
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// for each category (con, adj).
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#define WIDTH_NOT_SET -1
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#define NUM_WIDTHS 10
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#define NUM_MAJOR_WIDTHS 3 // MIN, DES, FIX
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#define MIN_CON 0 // minimum width required of the content + padding
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#define DES_CON 1 // desired width of the content + padding
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#define FIX 2 // fixed width either from the content or cell, col, etc. + padding
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#define MIN_ADJ 3 // minimum width + padding due to col spans
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#define DES_ADJ 4 // desired width + padding due to col spans
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#define FIX_ADJ 5 // fixed width + padding due to col spans
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#define PCT 6 // percent width of cell or col
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#define PCT_ADJ 7 // percent width of cell or col from percent colspan
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#define MIN_PRO 8 // desired width due to proportional <col>s or cols attribute
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#define FINAL 9 // width after the table has been balanced, considering all of the others
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enum nsColConstraint {
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eNoConstraint = 0,
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ePixelConstraint = 1, // pixel width
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ePercentConstraint = 2, // percent width
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eProportionConstraint = 3, // 1*, 2*, etc. cols attribute assigns 1*
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e0ProportionConstraint = 4 // 0*, means to force to min width
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};
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enum nsTableColType {
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eColContent = 0, // there is real col content associated
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eColAnonymousCol = 1, // the result of a span on a col
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eColAnonymousColGroup = 2, // the result of a span on a col group
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eColAnonymousCell = 3 // the result of a cell alone
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};
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class nsTableColFrame : public nsFrame {
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public:
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enum {eWIDTH_SOURCE_NONE =0, // no cell has contributed to the width style
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eWIDTH_SOURCE_CELL =1, // a cell specified a width
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eWIDTH_SOURCE_CELL_WITH_SPAN=2 // a cell implicitly specified a width via colspan
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};
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nsTableColType GetType() const;
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void SetType(nsTableColType aType);
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/** instantiate a new instance of nsTableColFrame.
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* @param aResult 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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friend nsresult
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NS_NewTableColFrame(nsIPresShell* aPresShell, nsIFrame** aResult);
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nsStyleCoord GetStyleWidth() const;
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PRInt32 GetColIndex() const;
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void SetColIndex (PRInt32 aColIndex);
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nsTableColFrame* GetNextCol() const;
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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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nsIStyleContext* aContext,
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nsIFrame* aPrevInFlow);
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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 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::tableColFrame
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*/
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const;
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#endif
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/** return the number of the columns the col represents. always >= 0 */
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virtual PRInt32 GetSpan ();
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/** convenience method, calls into cellmap */
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nsVoidArray * GetCells();
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nscoord GetWidth(PRUint32 aWidthType);
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void SetWidth(PRUint32 aWidthType,
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nscoord aWidth);
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nscoord GetMinWidth();
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nscoord GetDesWidth();
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nscoord GetFixWidth();
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nscoord GetPctWidth();
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void SetConstraint(nsColConstraint aConstraint);
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nsColConstraint GetConstraint() const;
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/** convenience method, calls into cellmap */
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PRInt32 Count() const;
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/** Return true if this col was constructed implicitly due to cells needing a col.
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* Return false if this col was constructed due to content having display type of table-col
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*/
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PRBool IsAnonymous();
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void SetIsAnonymous(PRBool aValue);
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void ResetSizingInfo();
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nscoord GetLeftBorderWidth(float* aPixelsToTwips = nsnull);
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void SetLeftBorderWidth(nscoord aWidth);
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nscoord GetRightBorderWidth(float* aPixelsToTwips = nsnull);
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void SetRightBorderWidth(nscoord aWidth);
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void Dump(PRInt32 aIndent);
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protected:
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nsTableColFrame();
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~nsTableColFrame();
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// the starting index of the column (starting at 0) that this col object represents //
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PRUint32 mColIndex: 16;
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PRUint32 mLeftBorderWidth: 8; // stored as pixels
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PRUint32 mRightBorderWidth: 8; // stored as pixels
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// Widths including MIN_CON, DES_CON, FIX_CON, MIN_ADJ, DES_ADJ, FIX_ADJ, PCT, PCT_ADJ, MIN_PRO, FINAL
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// Widths including MIN_CON, DES_CON, FIX_CON, MIN_ADJ, DES_ADJ, FIX_ADJ, PCT, PCT_ADJ, MIN_PRO, FINAL
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// XXX these could be stored as pixels and converted to twips for a savings of 10 x 2 bytes.
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nscoord mWidths[NUM_WIDTHS];
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};
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inline PRInt32 nsTableColFrame::GetColIndex() const
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{
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return mColIndex;
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}
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inline void nsTableColFrame::SetColIndex (PRInt32 aColIndex)
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{
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mColIndex = aColIndex;
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}
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inline nscoord nsTableColFrame::GetLeftBorderWidth(float* aPixelsToTwips)
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{
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nscoord width = (aPixelsToTwips) ? NSToCoordRound(*aPixelsToTwips * mLeftBorderWidth) : mLeftBorderWidth;
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return width;
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}
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inline void nsTableColFrame::SetLeftBorderWidth(nscoord aWidth)
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{
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mLeftBorderWidth = aWidth;
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}
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inline nscoord nsTableColFrame::GetRightBorderWidth(float* aPixelsToTwips)
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{
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nscoord width = (aPixelsToTwips) ? NSToCoordRound(*aPixelsToTwips * mRightBorderWidth) : mRightBorderWidth;
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return width;
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}
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inline void nsTableColFrame::SetRightBorderWidth(nscoord aWidth)
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{
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mRightBorderWidth = aWidth;
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}
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#endif
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