LCOV - app.info - layout/svg/base/src/nsSVGMarkerFrame.cpp

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: | 2012-07-07 | 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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