LCOV - code coverage report
Current view: directory - layout/svg/base/src - nsSVGMarkerFrame.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 86 0 0.0 %
Date: 2012-06-02 Functions: 12 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 the Mozilla SVG project.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is IBM Corporation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2004
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *
      23                 :  * Alternatively, the contents of this file may be used under the terms of
      24                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      25                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      26                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      27                 :  * of those above. If you wish to allow use of your version of this file only
      28                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      29                 :  * use your version of this file under the terms of the MPL, indicate your
      30                 :  * decision by deleting the provisions above and replace them with the notice
      31                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      32                 :  * the provisions above, a recipient may use your version of this file under
      33                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      34                 :  *
      35                 :  * ***** END LICENSE BLOCK ***** */
      36                 : 
      37                 : #include "nsIDOMSVGAnimatedRect.h"
      38                 : #include "nsIDOMSVGRect.h"
      39                 : #include "nsIDocument.h"
      40                 : #include "nsSVGMarkerFrame.h"
      41                 : #include "nsSVGPathGeometryFrame.h"
      42                 : #include "nsSVGEffects.h"
      43                 : #include "nsSVGMarkerElement.h"
      44                 : #include "nsSVGPathGeometryElement.h"
      45                 : #include "gfxContext.h"
      46                 : 
      47                 : nsIFrame*
      48               0 : NS_NewSVGMarkerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
      49                 : {
      50               0 :   return new (aPresShell) nsSVGMarkerFrame(aContext);
      51                 : }
      52                 : 
      53               0 : NS_IMPL_FRAMEARENA_HELPERS(nsSVGMarkerFrame)
      54                 : 
      55                 : //----------------------------------------------------------------------
      56                 : // nsIFrame methods:
      57                 : 
      58                 : NS_IMETHODIMP
      59               0 : nsSVGMarkerFrame::AttributeChanged(PRInt32  aNameSpaceID,
      60                 :                                    nsIAtom* aAttribute,
      61                 :                                    PRInt32  aModType)
      62                 : {
      63               0 :   if (aNameSpaceID == kNameSpaceID_None &&
      64                 :       (aAttribute == nsGkAtoms::markerUnits ||
      65                 :        aAttribute == nsGkAtoms::refX ||
      66                 :        aAttribute == nsGkAtoms::refY ||
      67                 :        aAttribute == nsGkAtoms::markerWidth ||
      68                 :        aAttribute == nsGkAtoms::markerHeight ||
      69                 :        aAttribute == nsGkAtoms::orient ||
      70                 :        aAttribute == nsGkAtoms::preserveAspectRatio ||
      71                 :        aAttribute == nsGkAtoms::viewBox)) {
      72               0 :     nsSVGEffects::InvalidateRenderingObservers(this);
      73                 :   }
      74                 : 
      75                 :   return nsSVGMarkerFrameBase::AttributeChanged(aNameSpaceID,
      76               0 :                                                 aAttribute, aModType);
      77                 : }
      78                 : 
      79                 : #ifdef DEBUG
      80                 : NS_IMETHODIMP
      81               0 : nsSVGMarkerFrame::Init(nsIContent* aContent,
      82                 :                        nsIFrame* aParent,
      83                 :                        nsIFrame* aPrevInFlow)
      84                 : {
      85               0 :   nsCOMPtr<nsIDOMSVGMarkerElement> marker = do_QueryInterface(aContent);
      86               0 :   NS_ASSERTION(marker, "Content is not an SVG marker");
      87                 : 
      88               0 :   return nsSVGMarkerFrameBase::Init(aContent, aParent, aPrevInFlow);
      89                 : }
      90                 : #endif /* DEBUG */
      91                 : 
      92                 : nsIAtom *
      93               0 : nsSVGMarkerFrame::GetType() const
      94                 : {
      95               0 :   return nsGkAtoms::svgMarkerFrame;
      96                 : }
      97                 : 
      98                 : //----------------------------------------------------------------------
      99                 : // nsSVGContainerFrame methods:
     100                 : 
     101                 : gfxMatrix
     102               0 : nsSVGMarkerFrame::GetCanvasTM()
     103                 : {
     104               0 :   NS_ASSERTION(mMarkedFrame, "null nsSVGPathGeometry frame");
     105                 : 
     106               0 :   if (mInUse2) {
     107                 :     // We're going to be bailing drawing the marker, so return an identity.
     108               0 :     return gfxMatrix();
     109                 :   }
     110                 : 
     111               0 :   nsSVGMarkerElement *content = static_cast<nsSVGMarkerElement*>(mContent);
     112                 :   
     113               0 :   mInUse2 = true;
     114               0 :   gfxMatrix markedTM = mMarkedFrame->GetCanvasTM();
     115               0 :   mInUse2 = false;
     116                 : 
     117               0 :   gfxMatrix markerTM = content->GetMarkerTransform(mStrokeWidth, mX, mY, mAutoAngle);
     118               0 :   gfxMatrix viewBoxTM = content->GetViewBoxTransform();
     119                 : 
     120               0 :   return viewBoxTM * markerTM * markedTM;
     121                 : }
     122                 : 
     123                 : 
     124                 : nsresult
     125               0 : nsSVGMarkerFrame::PaintMark(nsRenderingContext *aContext,
     126                 :                             nsSVGPathGeometryFrame *aMarkedFrame,
     127                 :                             nsSVGMark *aMark, float aStrokeWidth)
     128                 : {
     129                 :   // If the flag is set when we get here, it means this marker frame
     130                 :   // has already been used painting the current mark, and the document
     131                 :   // has a marker reference loop.
     132               0 :   if (mInUse)
     133               0 :     return NS_OK;
     134                 : 
     135               0 :   AutoMarkerReferencer markerRef(this, aMarkedFrame);
     136                 : 
     137               0 :   nsSVGMarkerElement *marker = static_cast<nsSVGMarkerElement*>(mContent);
     138                 : 
     139               0 :   const nsSVGViewBoxRect viewBox = marker->GetViewBoxRect();
     140                 : 
     141               0 :   if (viewBox.width <= 0.0f || viewBox.height <= 0.0f) {
     142                 :     // We must disable rendering if the viewBox width or height are zero.
     143               0 :     return NS_OK;
     144                 :   }
     145                 : 
     146               0 :   mStrokeWidth = aStrokeWidth;
     147               0 :   mX = aMark->x;
     148               0 :   mY = aMark->y;
     149               0 :   mAutoAngle = aMark->angle;
     150                 : 
     151               0 :   gfxContext *gfx = aContext->ThebesContext();
     152                 : 
     153               0 :   if (GetStyleDisplay()->IsScrollableOverflow()) {
     154               0 :     gfx->Save();
     155                 :     gfxRect clipRect =
     156                 :       nsSVGUtils::GetClipRectForFrame(this, viewBox.x, viewBox.y,
     157               0 :                                       viewBox.width, viewBox.height);
     158               0 :     nsSVGUtils::SetClipRect(gfx, GetCanvasTM(), clipRect);
     159                 :   }
     160                 : 
     161               0 :   for (nsIFrame* kid = mFrames.FirstChild(); kid;
     162                 :        kid = kid->GetNextSibling()) {
     163               0 :     nsISVGChildFrame* SVGFrame = do_QueryFrame(kid);
     164               0 :     if (SVGFrame) {
     165                 :       // The CTM of each frame referencing us may be different.
     166                 :       SVGFrame->NotifySVGChanged(
     167                 :                           nsISVGChildFrame::DO_NOT_NOTIFY_RENDERING_OBSERVERS |
     168               0 :                           nsISVGChildFrame::TRANSFORM_CHANGED);
     169               0 :       nsSVGUtils::PaintFrameWithEffects(aContext, nsnull, kid);
     170                 :     }
     171                 :   }
     172                 : 
     173               0 :   if (GetStyleDisplay()->IsScrollableOverflow())
     174               0 :     gfx->Restore();
     175                 : 
     176               0 :   return NS_OK;
     177                 : }
     178                 : 
     179                 : gfxRect
     180               0 : nsSVGMarkerFrame::GetMarkBBoxContribution(const gfxMatrix &aToBBoxUserspace,
     181                 :                                           PRUint32 aFlags,
     182                 :                                           nsSVGPathGeometryFrame *aMarkedFrame,
     183                 :                                           const nsSVGMark *aMark,
     184                 :                                           float aStrokeWidth)
     185                 : {
     186                 :   // If the flag is set when we get here, it means this marker frame
     187                 :   // has already been used in calculating the current mark bbox, and
     188                 :   // the document has a marker reference loop.
     189               0 :   if (mInUse)
     190               0 :     return gfxRect();
     191                 : 
     192               0 :   AutoMarkerReferencer markerRef(this, aMarkedFrame);
     193                 : 
     194               0 :   nsSVGMarkerElement *content = static_cast<nsSVGMarkerElement*>(mContent);
     195                 : 
     196               0 :   const nsSVGViewBoxRect viewBox = content->GetViewBoxRect();
     197                 : 
     198               0 :   if (viewBox.width <= 0.0f || viewBox.height <= 0.0f) {
     199               0 :     return gfxRect();
     200                 :   }
     201                 : 
     202               0 :   mStrokeWidth = aStrokeWidth;
     203               0 :   mX = aMark->x;
     204               0 :   mY = aMark->y;
     205               0 :   mAutoAngle = aMark->angle;
     206                 : 
     207               0 :   gfxRect bbox;
     208                 : 
     209                 :   gfxMatrix markerTM =
     210               0 :     content->GetMarkerTransform(mStrokeWidth, mX, mY, mAutoAngle);
     211               0 :   gfxMatrix viewBoxTM = content->GetViewBoxTransform();
     212                 : 
     213               0 :   gfxMatrix tm = viewBoxTM * markerTM * aToBBoxUserspace;
     214                 : 
     215               0 :   for (nsIFrame* kid = mFrames.FirstChild();
     216                 :        kid;
     217                 :        kid = kid->GetNextSibling()) {
     218               0 :     nsISVGChildFrame* child = do_QueryFrame(kid);
     219               0 :     if (child) {
     220                 :       // When we're being called to obtain the invalidation area, we need to
     221                 :       // pass down all the flags so that stroke is included. However, once DOM
     222                 :       // getBBox() accepts flags, maybe we should strip some of those here?
     223               0 :       bbox.UnionRect(bbox, child->GetBBoxContribution(tm, aFlags));
     224                 :     }
     225                 :   }
     226                 : 
     227               0 :   return bbox;
     228                 : }
     229                 : 
     230                 : void
     231               0 : nsSVGMarkerFrame::SetParentCoordCtxProvider(nsSVGSVGElement *aContext)
     232                 : {
     233               0 :   nsSVGMarkerElement *marker = static_cast<nsSVGMarkerElement*>(mContent);
     234               0 :   marker->SetParentCoordCtxProvider(aContext);
     235               0 : }
     236                 : 
     237                 : //----------------------------------------------------------------------
     238                 : // helper class
     239                 : 
     240               0 : nsSVGMarkerFrame::AutoMarkerReferencer::AutoMarkerReferencer(
     241                 :     nsSVGMarkerFrame *aFrame,
     242                 :     nsSVGPathGeometryFrame *aMarkedFrame)
     243               0 :       : mFrame(aFrame)
     244                 : {
     245               0 :   mFrame->mInUse = true;
     246               0 :   mFrame->mMarkedFrame = aMarkedFrame;
     247                 : 
     248                 :   nsSVGSVGElement *ctx =
     249               0 :     static_cast<nsSVGElement*>(aMarkedFrame->GetContent())->GetCtx();
     250               0 :   mFrame->SetParentCoordCtxProvider(ctx);
     251               0 : }
     252                 : 
     253               0 : nsSVGMarkerFrame::AutoMarkerReferencer::~AutoMarkerReferencer()
     254                 : {
     255               0 :   mFrame->SetParentCoordCtxProvider(nsnull);
     256                 : 
     257               0 :   mFrame->mMarkedFrame = nsnull;
     258               0 :   mFrame->mInUse = false;
     259               0 : }

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