Move rendering/svg/RenderSVGResource* to layout/svg.

Source/core/layout/svg/LayoutSVGResourceClipper.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  * Copyright (C) 2011 Dirk Schulze <krit@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
-#include "core/rendering/svg/RenderSVGResourceClipper.h"
+#include "core/layout/svg/LayoutSVGResourceClipper.h"
 
 #include "core/SVGNames.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/layout/HitTestResult.h"
 #include "core/layout/PaintInfo.h"
 #include "core/layout/svg/SVGLayoutSupport.h"
 #include "core/layout/svg/SVGResources.h"
 #include "core/layout/svg/SVGResourcesCache.h"
 #include "core/svg/SVGUseElement.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 #include "platform/graphics/paint/ClipPathDisplayItem.h"
 #include "platform/graphics/paint/DisplayItemList.h"
 #include "third_party/skia/include/core/SkPicture.h"
 #include "wtf/TemporaryChange.h"
 
 namespace blink {
 
-RenderSVGResourceClipper::RenderSVGResourceClipper(SVGClipPathElement* node)
-    : RenderSVGResourceContainer(node)
+LayoutSVGResourceClipper::LayoutSVGResourceClipper(SVGClipPathElement* node)
+    : LayoutSVGResourceContainer(node)
     , m_inClipExpansion(false)
 {
 }
 
-RenderSVGResourceClipper::~RenderSVGResourceClipper()
+LayoutSVGResourceClipper::~LayoutSVGResourceClipper()
 {
 }
 
-void RenderSVGResourceClipper::removeAllClientsFromCache(bool markForInvalidation)
+void LayoutSVGResourceClipper::removeAllClientsFromCache(bool markForInvalidation)
 {
     m_clipContentPicture.clear();
     m_clipBoundaries = FloatRect();
     markAllClientsForInvalidation(markForInvalidation ? LayoutAndBoundariesInvalidation : ParentOnlyInvalidation);
 }
 
-void RenderSVGResourceClipper::removeClientFromCache(LayoutObject* client, bool markForInvalidation)
+void LayoutSVGResourceClipper::removeClientFromCache(LayoutObject* client, bool markForInvalidation)
 {
     ASSERT(client);
     markClientForInvalidation(client, markForInvalidation ? BoundariesInvalidation : ParentOnlyInvalidation);
 }
 
-bool RenderSVGResourceClipper::applyStatefulResource(LayoutObject* object, GraphicsContext*& context, ClipperState& clipperState)
+bool LayoutSVGResourceClipper::applyStatefulResource(LayoutObject* object, GraphicsContext*& context, ClipperState& clipperState)
 {
     ASSERT(object);
     ASSERT(context);
 
     clearInvalidationMask();
 
     return applyClippingToContext(object, object->objectBoundingBox(), object->paintInvalidationRectInLocalCoordinates(), context, clipperState);
 }
 
-bool RenderSVGResourceClipper::tryPathOnlyClipping(DisplayItemClient client, GraphicsContext* context,
+bool LayoutSVGResourceClipper::tryPathOnlyClipping(DisplayItemClient client, GraphicsContext* context,
     const AffineTransform& animatedLocalTransform, const FloatRect& objectBoundingBox) {
     // If the current clip-path gets clipped itself, we have to fallback to masking.
     if (!style()->svgStyle().clipperResource().isEmpty())
         return false;
     WindRule clipRule = RULE_NONZERO;
     Path clipPath = Path();
 
     for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element()); childElement; childElement = Traversal<SVGElement>::nextSibling(*childElement)) {
         LayoutObject* renderer = childElement->renderer();
         if (!renderer)
             continue;
         // Only shapes or paths are supported for direct clipping. We need to fallback to masking for texts.
         if (renderer->isSVGText())
             return false;
         if (!childElement->isSVGGraphicsElement())
             continue;
         SVGGraphicsElement* styled = toSVGGraphicsElement(childElement);
         const LayoutStyle* style = renderer->style();
         if (!style || style->display() == NONE || style->visibility() != VISIBLE)
-             continue;
+            continue;
         const SVGLayoutStyle& svgStyle = style->svgStyle();
         // Current shape in clip-path gets clipped too. Fallback to masking.
         if (!svgStyle.clipperResource().isEmpty())
             return false;
 
         if (clipPath.isEmpty()) {
             // First clip shape.
             styled->toClipPath(clipPath);
             clipRule = svgStyle.clipRule();
             clipPath.setWindRule(clipRule);
@@ skipping 29 matching lines @@
     if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
         context->displayItemList()->add(BeginClipPathDisplayItem::create(client, clipPath, clipRule));
     } else {
         BeginClipPathDisplayItem clipPathDisplayItem(client, clipPath, clipRule);
         clipPathDisplayItem.replay(context);
     }
 
     return true;
 }
 
-bool RenderSVGResourceClipper::applyClippingToContext(LayoutObject* target, const FloatRect& targetBoundingBox,
+bool LayoutSVGResourceClipper::applyClippingToContext(LayoutObject* target, const FloatRect& targetBoundingBox,
     const FloatRect& paintInvalidationRect, GraphicsContext* context, ClipperState& clipperState)
 {
     ASSERT(target);
     ASSERT(context);
     ASSERT(clipperState == ClipperNotApplied);
     ASSERT_WITH_SECURITY_IMPLICATION(!needsLayout());
 
     if (paintInvalidationRect.isEmpty() || m_inClipExpansion)
         return false;
     TemporaryChange<bool> inClipExpansionChange(m_inClipExpansion, true);
@@ skipping 17 matching lines @@
     clipperState = ClipperAppliedMask;
 
     // Mask layer start
     context->beginTransparencyLayer(1, &paintInvalidationRect);
     {
         GraphicsContextStateSaver maskContentSaver(*context);
         context->concatCTM(animatedLocalTransform);
 
         // clipPath can also be clipped by another clipPath.
         SVGResources* resources = SVGResourcesCache::cachedResourcesForLayoutObject(this);
-        RenderSVGResourceClipper* clipPathClipper = resources ? resources->clipper() : 0;
+        LayoutSVGResourceClipper* clipPathClipper = resources ? resources->clipper() : 0;
         ClipperState clipPathClipperState = ClipperNotApplied;
         if (clipPathClipper && !clipPathClipper->applyClippingToContext(this, targetBoundingBox, paintInvalidationRect, context, clipPathClipperState)) {
             // FIXME: Awkward state micro-management. Ideally, GraphicsContextStateSaver should
             //   a) pop saveLayers also
             //   b) pop multiple states if needed (similarly to SkCanvas::restoreToCount())
             // Then we should be able to replace this mess with a single, top-level GCSS.
             maskContentSaver.restore();
             context->endLayer();
             return false;
         }
 
         drawClipMaskContent(context, targetBoundingBox);
 
         if (clipPathClipper)
             clipPathClipper->postApplyStatefulResource(this, context, clipPathClipperState);
     }
 
     // Masked content layer start.
     context->beginLayer(1, SkXfermode::kSrcIn_Mode, &paintInvalidationRect);
 
     return true;
 }
 
-void RenderSVGResourceClipper::postApplyStatefulResource(LayoutObject* target, GraphicsContext*& context, ClipperState& clipperState)
+void LayoutSVGResourceClipper::postApplyStatefulResource(LayoutObject* target, GraphicsContext*& context, ClipperState& clipperState)
 {
     switch (clipperState) {
     case ClipperAppliedPath:
         // Path-only clipping, no layers to restore but we need to emit an end to the clip path display item.
         {
             if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
                 context->displayItemList()->add(EndClipPathDisplayItem::create(target->displayItemClient()));
             } else {
                 EndClipPathDisplayItem endClipPathDisplayItem(target->displayItemClient());
                 endClipPathDisplayItem.replay(context);
             }
         }
         break;
     case ClipperAppliedMask:
         // Transfer content layer -> mask layer (SrcIn)
         context->endLayer();
         // Transfer mask layer -> bg layer (SrcOver)
         context->endLayer();
         break;
     default:
         ASSERT_NOT_REACHED();
     }
 }
 
-void RenderSVGResourceClipper::drawClipMaskContent(GraphicsContext* context, const FloatRect& targetBoundingBox)
+void LayoutSVGResourceClipper::drawClipMaskContent(GraphicsContext* context, const FloatRect& targetBoundingBox)
 {
     ASSERT(context);
 
     AffineTransform contentTransformation;
     if (clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
         contentTransformation.translate(targetBoundingBox.x(), targetBoundingBox.y());
         contentTransformation.scaleNonUniform(targetBoundingBox.width(), targetBoundingBox.height());
         context->concatCTM(contentTransformation);
     }
 
     if (!m_clipContentPicture) {
         SubtreeContentTransformScope contentTransformScope(contentTransformation);
         createPicture(context);
     }
 
     context->drawPicture(m_clipContentPicture.get());
 }
 
-void RenderSVGResourceClipper::createPicture(GraphicsContext* context)
+void LayoutSVGResourceClipper::createPicture(GraphicsContext* context)
 {
     ASSERT(context);
     ASSERT(frame());
 
     // Using strokeBoundingBox (instead of paintInvalidationRectInLocalCoordinates) to avoid the intersection
     // with local clips/mask, which may yield incorrect results when mixing objectBoundingBox and
     // userSpaceOnUse units (http://crbug.com/294900).
     FloatRect bounds = strokeBoundingBox();
     context->beginRecording(bounds);
 
@@ skipping 31 matching lines @@
         // - masker/filter not applied when rendering the children
         // - fill is set to the initial fill paint server (solid, black)
         // - stroke is set to the initial stroke paint server (none)
         PaintInfo info(context, LayoutRect::infiniteIntRect(), PaintPhaseForeground, PaintBehaviorRenderingClipPathAsMask);
         renderer->paint(info, IntPoint());
     }
 
     m_clipContentPicture = context->endRecording();
 }
 
-void RenderSVGResourceClipper::calculateClipContentPaintInvalidationRect()
+void LayoutSVGResourceClipper::calculateClipContentPaintInvalidationRect()
 {
     // This is a rough heuristic to appraise the clip size and doesn't consider clip on clip.
     for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element()); childElement; childElement = Traversal<SVGElement>::nextSibling(*childElement)) {
         LayoutObject* renderer = childElement->renderer();
         if (!renderer)
             continue;
         if (!renderer->isSVGShape() && !renderer->isSVGText() && !isSVGUseElement(*childElement))
             continue;
         const LayoutStyle* style = renderer->style();
         if (!style || style->display() == NONE || style->visibility() != VISIBLE)
-             continue;
+            continue;
         m_clipBoundaries.unite(renderer->localToParentTransform().mapRect(renderer->paintInvalidationRectInLocalCoordinates()));
     }
     m_clipBoundaries = toSVGClipPathElement(element())->calculateAnimatedLocalTransform().mapRect(m_clipBoundaries);
 }
 
-bool RenderSVGResourceClipper::hitTestClipContent(const FloatRect& objectBoundingBox, const FloatPoint& nodeAtPoint)
+bool LayoutSVGResourceClipper::hitTestClipContent(const FloatRect& objectBoundingBox, const FloatPoint& nodeAtPoint)
 {
     FloatPoint point = nodeAtPoint;
     if (!SVGLayoutSupport::pointInClippingArea(this, point))
         return false;
 
     if (clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
         AffineTransform transform;
         transform.translate(objectBoundingBox.x(), objectBoundingBox.y());
         transform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
         point = transform.inverse().mapPoint(point);
@@ skipping 13 matching lines @@
             continue;
         IntPoint hitPoint;
         HitTestResult result(hitPoint);
         if (renderer->nodeAtFloatPoint(HitTestRequest(HitTestRequest::SVGClipContent), result, point, HitTestForeground))
             return true;
     }
 
     return false;
 }
 
-FloatRect RenderSVGResourceClipper::resourceBoundingBox(const LayoutObject* object)
+FloatRect LayoutSVGResourceClipper::resourceBoundingBox(const LayoutObject* object)
 {
     // Resource was not layouted yet. Give back the boundingBox of the object.
     if (selfNeedsLayout())
         return object->objectBoundingBox();
 
     if (m_clipBoundaries.isEmpty())
         calculateClipContentPaintInvalidationRect();
 
     if (clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
         FloatRect objectBoundingBox = object->objectBoundingBox();
         AffineTransform transform;
         transform.translate(objectBoundingBox.x(), objectBoundingBox.y());
         transform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
         return transform.mapRect(m_clipBoundaries);
     }
 
     return m_clipBoundaries;
 }
 
 }