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256 lines
9.7 KiB
C++
256 lines
9.7 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 TableBackgroundPainter interface.
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*
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* The Initial Developer of the Original Code is
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* Elika J. Etemad ("fantasai") <fantasai@inkedblade.net>.
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* Portions created by the Initial Developer are Copyright (C) 2004
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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 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 nsTablePainter_h__
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#define nsTablePainter_h__
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#include "celldata.h"
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// flags for Paint, PaintChild, PaintChildren are currently only used by tables.
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//Table-based paint call; not a direct call as with views
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#define NS_PAINT_FLAG_TABLE_BG_PAINT 0x00000001
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//Cells should paint their backgrounds only, no children
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#define NS_PAINT_FLAG_TABLE_CELL_BG_PASS 0x00000002
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#include "nsIFrame.h"
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class nsTableFrame;
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class nsTableRowGroupFrame;
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class nsTableRowFrame;
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class nsTableCellFrame;
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class TableBackgroundPainter
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{
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/*
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* Helper class for painting table backgrounds
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*
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*/
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public:
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enum Origin { eOrigin_Table, eOrigin_TableRowGroup, eOrigin_TableRow };
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/** Public constructor
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* @param aTableFrame - the table's table frame
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* @param aOrigin - what type of table frame is creating this instance
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* @param aPresContext - the presentation context
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* @param aRenderingContext - the rendering context
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* @param aDirtyRect - the area that needs to be painted,
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* relative to aRenderingContext
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* @param aPt - offset of the table frame relative to
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* aRenderingContext
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* @param aBGPaintFlags - Flags of the nsCSSRendering::PAINTBG_* variety
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*/
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TableBackgroundPainter(nsTableFrame* aTableFrame,
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Origin aOrigin,
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nsPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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const nsPoint& aPt,
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PRUint32 aBGPaintFlags);
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/** Destructor */
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~TableBackgroundPainter();
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/* ~*~ The Border Collapse Painting Issue ~*~
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In border-collapse, the *table* paints the cells' borders,
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so we need to make sure the backgrounds get painted first
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(underneath) by doing a cell-background-only painting pass.
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*/
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/* ~*~ Using nsTablePainter Background Painting ~*~
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A call to PaintTable will normally paint all of the table's
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elements (except for the table background, if aPaintTableBackground
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is false).
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Elements with views however, will be skipped and must create their
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own painter to call the appropriate paint function in their ::Paint
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method (e.g. painter.PaintRow in nsTableRow::Paint)
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*/
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/** Paint background for the table frame (if requested) and its children
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* down through cells.
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* (Cells themselves will only be painted in border collapse)
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* Table must do a flagged TABLE_BG_PAINT ::Paint call on its
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* children afterwards
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* @param aTableFrame - the table frame
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* @param aDeflate - deflation needed to bring table's mRect
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* to the outer grid lines in border-collapse
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* @param aPaintTableBackground - if true, the table background
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* is included, otherwise it isn't
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*/
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nsresult PaintTable(nsTableFrame* aTableFrame, const nsMargin& aDeflate,
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PRBool aPaintTableBackground);
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/** Paint background for the row group and its children down through cells
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* (Cells themselves will only be painted in border collapse)
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* Standards mode only
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* Table Row Group must do a flagged TABLE_BG_PAINT ::Paint call on its
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* children afterwards
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* @param aFrame - the table row group frame
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*/
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nsresult PaintRowGroup(nsTableRowGroupFrame* aFrame)
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{ return PaintRowGroup(aFrame, PR_FALSE); }
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/** Paint background for the row and its children down through cells
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* (Cells themselves will only be painted in border collapse)
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* Standards mode only
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* Table Row must do a flagged TABLE_BG_PAINT ::Paint call on its
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* children afterwards
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* @param aFrame - the table row frame
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*/
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nsresult PaintRow(nsTableRowFrame* aFrame)
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{ return PaintRow(aFrame, PR_FALSE); }
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private:
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/** Paint table frame's background
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* @param aTableFrame - the table frame
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* @param aFirstRowGroup - the first (in layout order) row group
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* may be null
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* @param aLastRowGroup - the last (in layout order) row group
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* may be null
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* @param aDeflate - adjustment to frame's rect (used for quirks BC)
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* may be null
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*/
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nsresult PaintTableFrame(nsTableFrame* aTableFrame,
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nsTableRowGroupFrame* aFirstRowGroup,
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nsTableRowGroupFrame* aLastRowGroup,
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const nsMargin& aDeflate);
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/* aPassThrough params indicate whether to paint the element or to just
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* pass through and paint underlying layers only
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* See Public versions for function descriptions
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*/
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nsresult PaintRowGroup(nsTableRowGroupFrame* aFrame,
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PRBool aPassThrough);
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nsresult PaintRow(nsTableRowFrame* aFrame,
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PRBool aPassThrough);
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/** Paint table background layers for this cell space
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* Also paints cell's own background in border-collapse mode
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* @param aFrame - the cell
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* @param aPassSelf - pass this cell; i.e. paint only underlying layers
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*/
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nsresult PaintCell(nsTableCellFrame* aFrame,
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PRBool aPassSelf);
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/** Translate mRenderingContext, mDirtyRect, and mCols' column and
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* colgroup coords
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* @param aDX - origin's x-coord change
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* @param aDY - origin's y-coord change
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*/
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void TranslateContext(nscoord aDX,
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nscoord aDY);
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struct TableBackgroundData;
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friend struct TableBackgroundData;
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struct TableBackgroundData {
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nsIFrame* mFrame;
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/** mRect is the rect of mFrame in the current coordinate system */
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nsRect mRect;
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PRBool mVisible;
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const nsStyleBorder* mBorder;
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/** Data is valid & frame is visible */
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PRBool IsVisible() const { return mVisible; }
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/** Constructor */
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TableBackgroundData();
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/** Destructor */
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~TableBackgroundData();
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/** Destroys synthesized data. MUST be called before destructor
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* @param aPresContext - the pres context
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*/
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void Destroy(nsPresContext* aPresContext);
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/** Clear background data */
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void Clear();
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/** Calculate and set all data values to represent aFrame */
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void SetFull(nsIFrame* aFrame);
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/** Set frame data (mFrame, mRect) but leave style data empty */
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void SetFrame(nsIFrame* aFrame);
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/** Calculate the style data for mFrame */
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void SetData();
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/** True if need to set border-collapse border; must call SetFull beforehand */
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PRBool ShouldSetBCBorder();
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/** Set border-collapse border with aBorderWidth as widths */
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nsresult SetBCBorder(nsMargin& aBorderWidth,
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TableBackgroundPainter* aPainter);
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private:
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nsStyleBorder* mSynthBorder;
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};
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struct ColData;
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friend struct ColData;
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struct ColData {
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TableBackgroundData mCol;
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TableBackgroundData* mColGroup; //link to col's parent colgroup's data (owned by painter)
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ColData() {
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mColGroup = nsnull;
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}
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};
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nsPresContext* mPresContext;
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nsIRenderingContext& mRenderingContext;
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nsPoint mRenderPt;
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nsRect mDirtyRect;
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#ifdef DEBUG
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nsCompatibility mCompatMode;
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#endif
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PRBool mIsBorderCollapse;
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Origin mOrigin; //user's table frame type
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ColData* mCols; //array of columns' ColData
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PRUint32 mNumCols;
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TableBackgroundData mRowGroup; //current row group
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TableBackgroundData mRow; //current row
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nsRect mCellRect; //current cell's rect
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nsStyleBorder mZeroBorder; //cached zero-width border
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PRUint32 mBGPaintFlags;
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};
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#endif
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