LCOV - app.info - layout/base/nsCSSRendering.h

LCOV - code coverage report
| Current view: | directory - layout/base - nsCSSRendering.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 6 | 0 | 0.0 %
| Date: | 2012-04-21 | Functions: | 3 | 0 | 0.0 %

           1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
           2                 : /* ***** BEGIN LICENSE BLOCK *****
           3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           4                 :  *
           5                 :  * The contents of this file are subject to the Mozilla Public License Version
           6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           7                 :  * the License. You may obtain a copy of the License at
           8                 :  * http://www.mozilla.org/MPL/
           9                 :  *
          10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          12                 :  * for the specific language governing rights and limitations under the
          13                 :  * License.
          14                 :  *
          15                 :  * The Original Code is mozilla.org code.
          16                 :  *
          17                 :  * The Initial Developer of the Original Code is
          18                 :  * Netscape Communications Corporation.
          19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
          20                 :  * the Initial Developer. All Rights Reserved.
          21                 :  *
          22                 :  * Contributor(s):
          23                 :  *
          24                 :  * Alternatively, the contents of this file may be used under the terms of
          25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
          26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          28                 :  * of those above. If you wish to allow use of your version of this file only
          29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          30                 :  * use your version of this file under the terms of the MPL, indicate your
          31                 :  * decision by deleting the provisions above and replace them with the notice
          32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          33                 :  * the provisions above, a recipient may use your version of this file under
          34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          35                 :  *
          36                 :  * ***** END LICENSE BLOCK ***** */
          37                 :
          38                 : /* utility functions for drawing borders and backgrounds */
          39                 :
          40                 : #ifndef nsCSSRendering_h___
          41                 : #define nsCSSRendering_h___
          42                 :
          43                 : #include "nsStyleConsts.h"
          44                 : #include "gfxBlur.h"
          45                 : #include "gfxContext.h"
          46                 : #include "gfxImageSurface.h"
          47                 :
          48                 : struct nsPoint;
          49                 : class nsStyleContext;
          50                 : class nsPresContext;
          51                 : class nsRenderingContext;
          52                 :
          53                 : struct nsCSSRendering {
          54                 :   /**
          55                 :    * Initialize any static variables used by nsCSSRendering.
          56                 :    */
          57                 :   static void Init();
          58                 :
          59                 :   /**
          60                 :    * Clean up any static variables used by nsCSSRendering.
          61                 :    */
          62                 :   static void Shutdown();
          63                 :
          64                 :   static void PaintBoxShadowInner(nsPresContext* aPresContext,
          65                 :                                   nsRenderingContext& aRenderingContext,
          66                 :                                   nsIFrame* aForFrame,
          67                 :                                   const nsRect& aFrameArea,
          68                 :                                   const nsRect& aDirtyRect);
          69                 :
          70                 :   static void PaintBoxShadowOuter(nsPresContext* aPresContext,
          71                 :                                   nsRenderingContext& aRenderingContext,
          72                 :                                   nsIFrame* aForFrame,
          73                 :                                   const nsRect& aFrameArea,
          74                 :                                   const nsRect& aDirtyRect);
          75                 :
          76                 :   static void ComputePixelRadii(const nscoord *aAppUnitsRadii,
          77                 :                                 nscoord aAppUnitsPerPixel,
          78                 :                                 gfxCornerSizes *oBorderRadii);
          79                 :
          80                 :   /**
          81                 :    * Render the border for an element using css rendering rules
          82                 :    * for borders. aSkipSides is a bitmask of the sides to skip
          83                 :    * when rendering. If 0 then no sides are skipped.
          84                 :    */
          85                 :   static void PaintBorder(nsPresContext* aPresContext,
          86                 :                           nsRenderingContext& aRenderingContext,
          87                 :                           nsIFrame* aForFrame,
          88                 :                           const nsRect& aDirtyRect,
          89                 :                           const nsRect& aBorderArea,
          90                 :                           nsStyleContext* aStyleContext,
          91                 :                           PRIntn aSkipSides = 0);
          92                 :
          93                 :   /**
          94                 :    * Like PaintBorder, but taking an nsStyleBorder argument instead of
          95                 :    * getting it from aStyleContext.
          96                 :    */
          97                 :   static void PaintBorderWithStyleBorder(nsPresContext* aPresContext,
          98                 :                                          nsRenderingContext& aRenderingContext,
          99                 :                                          nsIFrame* aForFrame,
         100                 :                                          const nsRect& aDirtyRect,
         101                 :                                          const nsRect& aBorderArea,
         102                 :                                          const nsStyleBorder& aBorderStyle,
         103                 :                                          nsStyleContext* aStyleContext,
         104                 :                                          PRIntn aSkipSides = 0);
         105                 :
         106                 :
         107                 :   /**
         108                 :    * Render the outline for an element using css rendering rules
         109                 :    * for borders. aSkipSides is a bitmask of the sides to skip
         110                 :    * when rendering. If 0 then no sides are skipped.
         111                 :    */
         112                 :   static void PaintOutline(nsPresContext* aPresContext,
         113                 :                           nsRenderingContext& aRenderingContext,
         114                 :                           nsIFrame* aForFrame,
         115                 :                           const nsRect& aDirtyRect,
         116                 :                           const nsRect& aBorderArea,
         117                 :                           nsStyleContext* aStyleContext);
         118                 :
         119                 :   /**
         120                 :    * Render keyboard focus on an element.
         121                 :    * |aFocusRect| is the outer rectangle of the focused element.
         122                 :    * Uses a fixed style equivalent to "1px dotted |aColor|".
         123                 :    * Not used for controls, because the native theme may differ.
         124                 :    */
         125                 :   static void PaintFocus(nsPresContext* aPresContext,
         126                 :                          nsRenderingContext& aRenderingContext,
         127                 :                          const nsRect& aFocusRect,
         128                 :                          nscolor aColor);
         129                 :
         130                 :   /**
         131                 :    * Render a gradient for an element.
         132                 :    */
         133                 :   static void PaintGradient(nsPresContext* aPresContext,
         134                 :                             nsRenderingContext& aRenderingContext,
         135                 :                             nsStyleGradient* aGradient,
         136                 :                             const nsRect& aDirtyRect,
         137                 :                             const nsRect& aOneCellArea,
         138                 :                             const nsRect& aFillArea);
         139                 :
         140                 :   /**
         141                 :    * Find the frame whose background style should be used to draw the
         142                 :    * canvas background. aForFrame must be the frame for the root element
         143                 :    * whose background style should be used. This function will return
         144                 :    * aForFrame unless the <body> background should be propagated, in
         145                 :    * which case we return the frame associated with the <body>'s background.
         146                 :    */
         147                 :   static nsIFrame* FindBackgroundStyleFrame(nsIFrame* aForFrame);
         148                 :
         149                 :   /**
         150                 :    * @return true if |aFrame| is a canvas frame, in the CSS sense.
         151                 :    */
         152                 :   static bool IsCanvasFrame(nsIFrame* aFrame);
         153                 :
         154                 :   /**
         155                 :    * Fill in an aBackgroundSC to be used to paint the background
         156                 :    * for an element.  This applies the rules for propagating
         157                 :    * backgrounds between BODY, the root element, and the canvas.
         158                 :    * @return true if there is some meaningful background.
         159                 :    */
         160                 :   static bool FindBackground(nsPresContext* aPresContext,
         161                 :                                nsIFrame* aForFrame,
         162                 :                                nsStyleContext** aBackgroundSC);
         163                 :
         164                 :   /**
         165                 :    * As FindBackground, but the passed-in frame is known to be a root frame
         166                 :    * (returned from nsCSSFrameConstructor::GetRootElementStyleFrame())
         167                 :    * and there is always some meaningful background returned.
         168                 :    */
         169                 :   static nsStyleContext* FindRootFrameBackground(nsIFrame* aForFrame);
         170                 :
         171                 :   /**
         172                 :    * Returns background style information for the canvas.
         173                 :    *
         174                 :    * @param aForFrame
         175                 :    *   the frame used to represent the canvas, in the CSS sense (i.e.
         176                 :    *   nsCSSRendering::IsCanvasFrame(aForFrame) must be true)
         177                 :    * @param aRootElementFrame
         178                 :    *   the frame representing the root element of the document
         179                 :    * @param aBackground
         180                 :    *   contains background style information for the canvas on return
         181                 :    */
         182                 :   static nsStyleContext*
         183               0 :   FindCanvasBackground(nsIFrame* aForFrame, nsIFrame* aRootElementFrame)
         184                 :   {
         185               0 :     NS_ABORT_IF_FALSE(IsCanvasFrame(aForFrame), "not a canvas frame");
         186               0 :     if (aRootElementFrame)
         187               0 :       return FindRootFrameBackground(aRootElementFrame);
         188                 :
         189                 :     // This should always give transparent, so we'll fill it in with the
         190                 :     // default color if needed.  This seems to happen a bit while a page is
         191                 :     // being loaded.
         192               0 :     return aForFrame->GetStyleContext();
         193                 :   }
         194                 :
         195                 :   /**
         196                 :    * Find a frame which draws a non-transparent background,
         197                 :    * for various table-related and HR-related backwards-compatibility hacks.
         198                 :    * This function will also stop if it finds themed frame which might draw
         199                 :    * background.
         200                 :    *
         201                 :    * Be very hesitant if you're considering calling this function -- it's
         202                 :    * usually not what you want.
         203                 :    */
         204                 :   static nsIFrame*
         205                 :   FindNonTransparentBackgroundFrame(nsIFrame* aFrame,
         206                 :                                     bool aStartAtParent = false);
         207                 :
         208                 :   /**
         209                 :    * Determine the background color to draw taking into account print settings.
         210                 :    */
         211                 :   static nscolor
         212                 :   DetermineBackgroundColor(nsPresContext* aPresContext,
         213                 :                            nsStyleContext* aStyleContext,
         214                 :                            nsIFrame* aFrame);
         215                 :
         216                 :   /**
         217                 :    * Render the background for an element using css rendering rules
         218                 :    * for backgrounds.
         219                 :    */
         220                 :   enum {
         221                 :     /**
         222                 :      * When this flag is passed, the element's nsDisplayBorder will be
         223                 :      * painted immediately on top of this background.
         224                 :      */
         225                 :     PAINTBG_WILL_PAINT_BORDER = 0x01,
         226                 :     /**
         227                 :      * When this flag is passed, images are synchronously decoded.
         228                 :      */
         229                 :     PAINTBG_SYNC_DECODE_IMAGES = 0x02,
         230                 :     /**
         231                 :      * When this flag is passed, painting will go to the screen so we can
         232                 :      * take advantage of the fact that it will be clipped to the viewport.
         233                 :      */
         234                 :     PAINTBG_TO_WINDOW = 0x04
         235                 :   };
         236                 :   static void PaintBackground(nsPresContext* aPresContext,
         237                 :                               nsRenderingContext& aRenderingContext,
         238                 :                               nsIFrame* aForFrame,
         239                 :                               const nsRect& aDirtyRect,
         240                 :                               const nsRect& aBorderArea,
         241                 :                               PRUint32 aFlags,
         242                 :                               nsRect* aBGClipRect = nsnull);
         243                 :
         244                 :   /**
         245                 :    * Same as |PaintBackground|, except using the provided style structs.
         246                 :    * This short-circuits the code that ensures that the root element's
         247                 :    * background is drawn on the canvas.
         248                 :    */
         249                 :   static void PaintBackgroundWithSC(nsPresContext* aPresContext,
         250                 :                                     nsRenderingContext& aRenderingContext,
         251                 :                                     nsIFrame* aForFrame,
         252                 :                                     const nsRect& aDirtyRect,
         253                 :                                     const nsRect& aBorderArea,
         254                 :                                     nsStyleContext *aStyleContext,
         255                 :                                     const nsStyleBorder& aBorder,
         256                 :                                     PRUint32 aFlags,
         257                 :                                     nsRect* aBGClipRect = nsnull);
         258                 :
         259                 :   /**
         260                 :    * Returns the rectangle covered by the given background layer image, taking
         261                 :    * into account background positioning, sizing, and repetition, but not
         262                 :    * clipping.
         263                 :    */
         264                 :   static nsRect GetBackgroundLayerRect(nsPresContext* aPresContext,
         265                 :                                        nsIFrame* aForFrame,
         266                 :                                        const nsRect& aBorderArea,
         267                 :                                        const nsStyleBackground& aBackground,
         268                 :                                        const nsStyleBackground::Layer& aLayer);
         269                 :
         270                 :   /**
         271                 :    * Called by the presShell when painting is finished, so we can clear our
         272                 :    * inline background data cache.
         273                 :    */
         274                 :   static void DidPaint();
         275                 :
         276                 :   // Draw a border segment in the table collapsing border model without
         277                 :   // beveling corners
         278                 :   static void DrawTableBorderSegment(nsRenderingContext& aContext,
         279                 :                                      PRUint8              aBorderStyle,
         280                 :                                      nscolor              aBorderColor,
         281                 :                                      const nsStyleBackground* aBGColor,
         282                 :                                      const nsRect&        aBorderRect,
         283                 :                                      PRInt32              aAppUnitsPerCSSPixel,
         284                 :                                      PRUint8              aStartBevelSide = 0,
         285                 :                                      nscoord              aStartBevelOffset = 0,
         286                 :                                      PRUint8              aEndBevelSide = 0,
         287                 :                                      nscoord              aEndBevelOffset = 0);
         288                 :
         289                 :   /**
         290                 :    * Function for painting the decoration lines for the text.
         291                 :    * NOTE: aPt, aLineSize, aAscent and aOffset are non-rounded device pixels,
         292                 :    *       not app units.
         293                 :    *   input:
         294                 :    *     @param aGfxContext
         295                 :    *     @param aDirtyRect        no need to paint outside this rect
         296                 :    *     @param aColor            the color of the decoration line
         297                 :    *     @param aPt               the top/left edge of the text
         298                 :    *     @param aLineSize         the width and the height of the decoration
         299                 :    *                              line
         300                 :    *     @param aAscent           the ascent of the text
         301                 :    *     @param aOffset           the offset of the decoration line from
         302                 :    *                              the baseline of the text (if the value is
         303                 :    *                              positive, the line is lifted up)
         304                 :    *     @param aDecoration       which line will be painted. The value can be
         305                 :    *                              NS_STYLE_TEXT_DECORATION_LINE_UNDERLINE or
         306                 :    *                              NS_STYLE_TEXT_DECORATION_LINE_OVERLINE or
         307                 :    *                              NS_STYLE_TEXT_DECORATION_LINE_LINE_THROUGH.
         308                 :    *     @param aStyle            the style of the decoration line such as
         309                 :    *                              NS_STYLE_TEXT_DECORATION_STYLE_*.
         310                 :    *     @param aDescentLimit     If aDescentLimit is zero or larger and the
         311                 :    *                              underline overflows from the descent space,
         312                 :    *                              the underline should be lifted up as far as
         313                 :    *                              possible.  Note that this does not mean the
         314                 :    *                              underline never overflows from this
         315                 :    *                              limitation.  Because if the underline is
         316                 :    *                              positioned to the baseline or upper, it causes
         317                 :    *                              unreadability.  Note that if this is zero
         318                 :    *                              or larger, the underline rect may be shrunken
         319                 :    *                              if it's possible.  Therefore, this value is
         320                 :    *                              used for strikeout line and overline too.
         321                 :    */
         322                 :   static void PaintDecorationLine(gfxContext* aGfxContext,
         323                 :                                   const gfxRect& aDirtyRect,
         324                 :                                   const nscolor aColor,
         325                 :                                   const gfxPoint& aPt,
         326                 :                                   const gfxSize& aLineSize,
         327                 :                                   const gfxFloat aAscent,
         328                 :                                   const gfxFloat aOffset,
         329                 :                                   const PRUint8 aDecoration,
         330                 :                                   const PRUint8 aStyle,
         331                 :                                   const gfxFloat aDescentLimit = -1.0);
         332                 :
         333                 :   /**
         334                 :    * Function for getting the decoration line rect for the text.
         335                 :    * NOTE: aLineSize, aAscent and aOffset are non-rounded device pixels,
         336                 :    *       not app units.
         337                 :    *   input:
         338                 :    *     @param aPresContext
         339                 :    *     @param aLineSize         the width and the height of the decoration
         340                 :    *                              line
         341                 :    *     @param aAscent           the ascent of the text
         342                 :    *     @param aOffset           the offset of the decoration line from
         343                 :    *                              the baseline of the text (if the value is
         344                 :    *                              positive, the line is lifted up)
         345                 :    *     @param aDecoration       which line will be painted. The value can be
         346                 :    *                              NS_STYLE_TEXT_DECORATION_LINE_UNDERLINE or
         347                 :    *                              NS_STYLE_TEXT_DECORATION_LINE_OVERLINE or
         348                 :    *                              NS_STYLE_TEXT_DECORATION_LINE_LINE_THROUGH.
         349                 :    *     @param aStyle            the style of the decoration line such as
         350                 :    *                              NS_STYLE_TEXT_DECORATION_STYLE_*.
         351                 :    *     @param aDescentLimit     If aDescentLimit is zero or larger and the
         352                 :    *                              underline overflows from the descent space,
         353                 :    *                              the underline should be lifted up as far as
         354                 :    *                              possible.  Note that this does not mean the
         355                 :    *                              underline never overflows from this
         356                 :    *                              limitation.  Because if the underline is
         357                 :    *                              positioned to the baseline or upper, it causes
         358                 :    *                              unreadability.  Note that if this is zero
         359                 :    *                              or larger, the underline rect may be shrunken
         360                 :    *                              if it's possible.  Therefore, this value is
         361                 :    *                              used for strikeout line and overline too.
         362                 :    *   output:
         363                 :    *     @return                  the decoration line rect for the input,
         364                 :    *                              the each values are app units.
         365                 :    */
         366                 :   static nsRect GetTextDecorationRect(nsPresContext* aPresContext,
         367                 :                                       const gfxSize& aLineSize,
         368                 :                                       const gfxFloat aAscent,
         369                 :                                       const gfxFloat aOffset,
         370                 :                                       const PRUint8 aDecoration,
         371                 :                                       const PRUint8 aStyle,
         372                 :                                       const gfxFloat aDescentLimit = -1.0);
         373                 :
         374                 : protected:
         375                 :   static gfxRect GetTextDecorationRectInternal(const gfxPoint& aPt,
         376                 :                                                const gfxSize& aLineSize,
         377                 :                                                const gfxFloat aAscent,
         378                 :                                                const gfxFloat aOffset,
         379                 :                                                const PRUint8 aDecoration,
         380                 :                                                const PRUint8 aStyle,
         381                 :                                                const gfxFloat aDscentLimit);
         382                 : };
         383                 :
         384                 : /*
         385                 :  * nsContextBoxBlur
         386                 :  * Creates an 8-bit alpha channel context for callers to draw in, blurs the
         387                 :  * contents of that context and applies it as a 1-color mask on a
         388                 :  * different existing context. Uses gfxAlphaBoxBlur as its back end.
         389                 :  *
         390                 :  * You must call Init() first to create a suitable temporary surface to draw
         391                 :  * on.  You must then draw any desired content onto the given context, then
         392                 :  * call DoPaint() to apply the blurred content as a single-color mask. You
         393                 :  * can only call Init() once, so objects cannot be reused.
         394                 :  *
         395                 :  * This is very useful for creating drop shadows or silhouettes.
         396                 :  */
         397               0 : class nsContextBoxBlur {
         398                 : public:
         399                 :   enum {
         400                 :     FORCE_MASK = 0x01
         401                 :   };
         402                 :   /**
         403                 :    * Prepares a gfxContext to draw on. Do not call this twice; if you want
         404                 :    * to get the gfxContext again use GetContext().
         405                 :    *
         406                 :    * @param aRect                The coordinates of the surface to create.
         407                 :    *                             All coordinates must be in app units.
         408                 :    *                             This must not include the blur radius, pass
         409                 :    *                             it as the second parameter and everything
         410                 :    *                             is taken care of.
         411                 :    *
         412                 :    * @param aBlurRadius          The blur radius in app units.
         413                 :    *
         414                 :    * @param aAppUnitsPerDevPixel The number of app units in a device pixel,
         415                 :    *                             for conversion.  Most of the time you'll
         416                 :    *                             pass this from the current PresContext if
         417                 :    *                             available.
         418                 :    *
         419                 :    * @param aDestinationCtx      The graphics context to apply the blurred
         420                 :    *                             mask to when you call DoPaint(). Make sure
         421                 :    *                             it is not destroyed before you call
         422                 :    *                             DoPaint(). To set the color of the
         423                 :    *                             resulting blurred graphic mask, you must
         424                 :    *                             set the color on this context before
         425                 :    *                             calling Init().
         426                 :    *
         427                 :    * @param aDirtyRect           The absolute dirty rect in app units. Used to
         428                 :    *                             optimize the temporary surface size and speed up blur.
         429                 :    *
         430                 :    * @param aSkipRect            An area in device pixels (NOT app units!) to avoid
         431                 :    *                             blurring over, to prevent unnecessary work.
         432                 :    *
         433                 :    * @param aFlags               FORCE_MASK to ensure that the content drawn to the
         434                 :    *                             returned gfxContext is used as a mask, and not
         435                 :    *                             drawn directly to aDestinationCtx.
         436                 :    *
         437                 :    * @return            A blank 8-bit alpha-channel-only graphics context to
         438                 :    *                    draw on, or null on error. Must not be freed. The
         439                 :    *                    context has a device offset applied to it given by
         440                 :    *                    aRect. This means you can use coordinates as if it
         441                 :    *                    were at the desired position at aRect and you don't
         442                 :    *                    need to worry about translating any coordinates to
         443                 :    *                    draw on this temporary surface.
         444                 :    *
         445                 :    * If aBlurRadius is 0, the returned context is aDestinationCtx and
         446                 :    * DoPaint() does nothing, because no blurring is required. Therefore, you
         447                 :    * should prepare the destination context as if you were going to draw
         448                 :    * directly on it instead of any temporary surface created in this class.
         449                 :    */
         450                 :   gfxContext* Init(const nsRect& aRect, nscoord aSpreadRadius,
         451                 :                    nscoord aBlurRadius,
         452                 :                    PRInt32 aAppUnitsPerDevPixel, gfxContext* aDestinationCtx,
         453                 :                    const nsRect& aDirtyRect, const gfxRect* aSkipRect,
         454                 :                    PRUint32 aFlags = 0);
         455                 :
         456                 :   /**
         457                 :    * Does the actual blurring/spreading. Users of this object *must*
         458                 :    * have called Init() first, then have drawn whatever they want to be
         459                 :    * blurred onto the internal gfxContext before calling this.
         460                 :    */
         461                 :   void DoEffects();
         462                 :
         463                 :   /**
         464                 :    * Does the actual blurring and mask applying. Users of this object *must*
         465                 :    * have called Init() first, then have drawn whatever they want to be
         466                 :    * blurred onto the internal gfxContext before calling this.
         467                 :    */
         468                 :   void DoPaint();
         469                 :
         470                 :   /**
         471                 :    * Gets the internal gfxContext at any time. Must not be freed. Avoid
         472                 :    * calling this before calling Init() since the context would not be
         473                 :    * constructed at that point.
         474                 :    */
         475                 :   gfxContext* GetContext();
         476                 :
         477                 :
         478                 :   /**
         479                 :    * Get the margin associated with the given blur radius, i.e., the
         480                 :    * additional area that might be painted as a result of it.  (The
         481                 :    * margin for a spread radius is itself, on all sides.)
         482                 :    */
         483                 :   static nsMargin GetBlurRadiusMargin(nscoord aBlurRadius,
         484                 :                                       PRInt32 aAppUnitsPerDevPixel);
         485                 :
         486                 : protected:
         487                 :   gfxAlphaBoxBlur blur;
         488                 :   nsRefPtr<gfxContext> mContext;
         489                 :   gfxContext* mDestinationCtx;
         490                 :
         491                 : };
         492                 :
         493                 : #endif /* nsCSSRendering_h___ */

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