| /* |
| * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2008 Dirk Schulze <krit@webkit.org> |
| * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| * |
| * 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 "RenderSVGResource.h" |
| |
| #include "Frame.h" |
| #include "FrameView.h" |
| #include "LegacyRenderSVGRoot.h" |
| #include "LegacyRenderSVGShape.h" |
| #include "RenderSVGResourceClipper.h" |
| #include "RenderSVGResourceFilter.h" |
| #include "RenderSVGResourceMasker.h" |
| #include "RenderSVGResourceSolidColor.h" |
| #include "RenderSVGRoot.h" |
| #include "RenderSVGShape.h" |
| #include "RenderView.h" |
| #include "SVGResourceElementClient.h" |
| #include "SVGResources.h" |
| #include "SVGResourcesCache.h" |
| #include "SVGURIReference.h" |
| |
| namespace WebCore { |
| |
| static inline bool inheritColorFromParentStyleIfNeeded(RenderElement& object, bool applyToFill, Color& color) |
| { |
| if (color.isValid()) |
| return true; |
| if (!object.parent()) |
| return false; |
| const SVGRenderStyle& parentSVGStyle = object.parent()->style().svgStyle(); |
| color = applyToFill ? parentSVGStyle.fillPaintColor() : parentSVGStyle.strokePaintColor(); |
| return true; |
| } |
| |
| static inline RenderSVGResource* requestPaintingResource(RenderSVGResourceMode mode, RenderElement& renderer, const RenderStyle& style, Color& fallbackColor) |
| { |
| const SVGRenderStyle& svgStyle = style.svgStyle(); |
| |
| bool isRenderingMask = renderer.view().frameView().paintBehavior().contains(PaintBehavior::RenderingSVGMask); |
| |
| // If we have no fill/stroke, return nullptr. |
| if (mode == RenderSVGResourceMode::ApplyToFill) { |
| // When rendering the mask for a RenderSVGResourceClipper, always use the initial fill paint server, and ignore stroke. |
| if (isRenderingMask) { |
| RenderSVGResourceSolidColor* colorResource = RenderSVGResource::sharedSolidPaintingResource(); |
| colorResource->setColor(SVGRenderStyle::initialFillPaintColor()); |
| return colorResource; |
| } |
| |
| if (!svgStyle.hasFill()) |
| return nullptr; |
| } else { |
| if (!svgStyle.hasStroke() || isRenderingMask) |
| return nullptr; |
| } |
| |
| bool applyToFill = mode == RenderSVGResourceMode::ApplyToFill; |
| SVGPaintType paintType = applyToFill ? svgStyle.fillPaintType() : svgStyle.strokePaintType(); |
| if (paintType == SVGPaintType::None) |
| return nullptr; |
| |
| Color color; |
| switch (paintType) { |
| case SVGPaintType::CurrentColor: |
| case SVGPaintType::RGBColor: |
| case SVGPaintType::URICurrentColor: |
| case SVGPaintType::URIRGBColor: |
| color = applyToFill ? svgStyle.fillPaintColor() : svgStyle.strokePaintColor(); |
| break; |
| default: |
| break; |
| } |
| |
| if (style.insideLink() == InsideLink::InsideVisited) { |
| // FIXME: This code doesn't support the uri component of the visited link paint, https://bugs.webkit.org/show_bug.cgi?id=70006 |
| SVGPaintType visitedPaintType = applyToFill ? svgStyle.visitedLinkFillPaintType() : svgStyle.visitedLinkStrokePaintType(); |
| |
| // For SVGPaintType::CurrentColor, 'color' already contains the 'visitedColor'. |
| if (visitedPaintType < SVGPaintType::URINone && visitedPaintType != SVGPaintType::CurrentColor) { |
| const Color& visitedColor = applyToFill ? svgStyle.visitedLinkFillPaintColor() : svgStyle.visitedLinkStrokePaintColor(); |
| if (visitedColor.isValid()) |
| color = visitedColor.colorWithAlpha(color.alphaAsFloat()); |
| } |
| } |
| |
| // If the primary resource is just a color, return immediately. |
| RenderSVGResourceSolidColor* colorResource = RenderSVGResource::sharedSolidPaintingResource(); |
| if (paintType < SVGPaintType::URINone) { |
| if (!inheritColorFromParentStyleIfNeeded(renderer, applyToFill, color)) |
| return nullptr; |
| |
| colorResource->setColor(color); |
| return colorResource; |
| } |
| |
| // If no resources are associated with the given renderer, return the color resource. |
| auto* resources = SVGResourcesCache::cachedResourcesForRenderer(renderer); |
| if (!resources) { |
| if (paintType == SVGPaintType::URINone || !inheritColorFromParentStyleIfNeeded(renderer, applyToFill, color)) |
| return nullptr; |
| |
| colorResource->setColor(color); |
| return colorResource; |
| } |
| |
| // If the requested resource is not available, return the color resource. |
| RenderSVGResource* uriResource = mode == RenderSVGResourceMode::ApplyToFill ? resources->fill() : resources->stroke(); |
| if (!uriResource) { |
| if (!inheritColorFromParentStyleIfNeeded(renderer, applyToFill, color)) |
| return nullptr; |
| |
| colorResource->setColor(color); |
| return colorResource; |
| } |
| |
| // The paint server resource exists, though it may be invalid (pattern with width/height=0). Pass the fallback color to our caller |
| // so it can use the solid color painting resource, if applyResource() on the URI resource failed. |
| fallbackColor = color; |
| return uriResource; |
| } |
| |
| RenderSVGResource* RenderSVGResource::fillPaintingResource(RenderElement& renderer, const RenderStyle& style, Color& fallbackColor) |
| { |
| return requestPaintingResource(RenderSVGResourceMode::ApplyToFill, renderer, style, fallbackColor); |
| } |
| |
| RenderSVGResource* RenderSVGResource::strokePaintingResource(RenderElement& renderer, const RenderStyle& style, Color& fallbackColor) |
| { |
| return requestPaintingResource(RenderSVGResourceMode::ApplyToStroke, renderer, style, fallbackColor); |
| } |
| |
| RenderSVGResourceSolidColor* RenderSVGResource::sharedSolidPaintingResource() |
| { |
| static RenderSVGResourceSolidColor* s_sharedSolidPaintingResource = 0; |
| if (!s_sharedSolidPaintingResource) |
| s_sharedSolidPaintingResource = new RenderSVGResourceSolidColor; |
| return s_sharedSolidPaintingResource; |
| } |
| |
| static void removeFromCacheAndInvalidateDependencies(RenderElement& renderer, bool needsLayout) |
| { |
| if (auto* resources = SVGResourcesCache::cachedResourcesForRenderer(renderer)) { |
| if (RenderSVGResourceFilter* filter = resources->filter()) |
| filter->removeClientFromCache(renderer); |
| |
| if (RenderSVGResourceMasker* masker = resources->masker()) |
| masker->removeClientFromCache(renderer); |
| |
| if (RenderSVGResourceClipper* clipper = resources->clipper()) |
| clipper->removeClientFromCache(renderer); |
| } |
| |
| if (!is<SVGElement>(renderer.element())) |
| return; |
| |
| Ref svgElement = downcast<SVGElement>(*renderer.element()); |
| |
| for (auto& element : svgElement->referencingElements()) { |
| if (auto* renderer = element->renderer()) { |
| // We allow cycles in SVGDocumentExtensions reference sets in order to avoid expensive |
| // reference graph adjustments on changes, so we need to break possible cycles here. |
| static NeverDestroyed<WeakHashSet<SVGElement>> invalidatingDependencies; |
| if (UNLIKELY(!invalidatingDependencies.get().add(element.get()).isNewEntry)) { |
| // Reference cycle: we are in process of invalidating this dependant. |
| continue; |
| } |
| RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer, needsLayout); |
| invalidatingDependencies.get().remove(element.get()); |
| } |
| } |
| |
| for (auto& cssClient : svgElement->referencingCSSClients()) { |
| if (!cssClient) |
| continue; |
| cssClient->resourceChanged(svgElement.get()); |
| } |
| } |
| |
| void RenderSVGResource::markForLayoutAndParentResourceInvalidation(RenderObject& object, bool needsLayout) |
| { |
| ASSERT(object.node()); |
| |
| if (needsLayout && !object.renderTreeBeingDestroyed()) { |
| // If we are inside the layout of an LegacyRenderSVGRoot, do not cross the SVG boundary to |
| // invalidate the ancestor renderer because it may have finished its layout already. |
| if (is<LegacyRenderSVGRoot>(object) && downcast<LegacyRenderSVGRoot>(object).isInLayout()) |
| object.setNeedsLayout(MarkOnlyThis); |
| #if ENABLE(LAYER_BASED_SVG_ENGINE) |
| else if (is<RenderSVGRoot>(object) && downcast<RenderSVGRoot>(object).isInLayout()) |
| object.setNeedsLayout(MarkOnlyThis); |
| #endif |
| else { |
| if (!is<RenderElement>(object)) |
| object.setNeedsLayout(MarkOnlyThis); |
| else { |
| auto svgRoot = SVGRenderSupport::findTreeRootObject(downcast<RenderElement>(object)); |
| if (!svgRoot || !svgRoot->isInLayout()) |
| object.setNeedsLayout(MarkContainingBlockChain); |
| else { |
| // We just want to re-layout the ancestors up to the RenderSVGRoot. |
| object.setNeedsLayout(MarkOnlyThis); |
| for (auto current = object.parent(); current != svgRoot; current = current->parent()) |
| current->setNeedsLayout(MarkOnlyThis); |
| svgRoot->setNeedsLayout(MarkOnlyThis); |
| } |
| } |
| } |
| } |
| |
| if (is<RenderElement>(object)) |
| removeFromCacheAndInvalidateDependencies(downcast<RenderElement>(object), needsLayout); |
| |
| // Invalidate resources in ancestor chain, if needed. |
| auto current = object.parent(); |
| while (current) { |
| removeFromCacheAndInvalidateDependencies(*current, needsLayout); |
| |
| if (is<RenderSVGResourceContainer>(*current)) { |
| // This will process the rest of the ancestors. |
| downcast<RenderSVGResourceContainer>(*current).removeAllClientsFromCache(); |
| break; |
| } |
| |
| current = current->parent(); |
| } |
| } |
| |
| void RenderSVGResource::fillAndStrokePathOrShape(GraphicsContext& context, OptionSet<RenderSVGResourceMode> resourceMode, const Path* path, const RenderElement* shape) const |
| { |
| if (shape) { |
| ASSERT(shape->isSVGShapeOrLegacySVGShape()); |
| |
| if (resourceMode.contains(RenderSVGResourceMode::ApplyToFill)) { |
| if (is<LegacyRenderSVGShape>(shape)) |
| downcast<LegacyRenderSVGShape>(shape)->fillShape(context); |
| #if ENABLE(LAYER_BASED_SVG_ENGINE) |
| else if (is<RenderSVGShape>(shape)) |
| downcast<RenderSVGShape>(shape)->fillShape(context); |
| #endif |
| } |
| |
| if (resourceMode.contains(RenderSVGResourceMode::ApplyToStroke)) { |
| if (is<LegacyRenderSVGShape>(shape)) |
| downcast<LegacyRenderSVGShape>(shape)->strokeShape(context); |
| #if ENABLE(LAYER_BASED_SVG_ENGINE) |
| else if (is<RenderSVGShape>(shape)) |
| downcast<RenderSVGShape>(shape)->strokeShape(context); |
| #endif |
| } |
| |
| return; |
| } |
| |
| if (!path) |
| return; |
| |
| if (resourceMode.contains(RenderSVGResourceMode::ApplyToFill)) |
| context.fillPath(*path); |
| if (resourceMode.contains(RenderSVGResourceMode::ApplyToStroke)) |
| context.strokePath(*path); |
| } |
| |
| } |
