| /* |
| * Copyright (C) Research In Motion Limited 2009-2010. 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. |
| */ |
| |
| #ifndef RenderSVGResourceClipper_h |
| #define RenderSVGResourceClipper_h |
| |
| #include "core/rendering/svg/RenderSVGResourceContainer.h" |
| #include "core/svg/SVGClipPathElement.h" |
| |
| namespace blink { |
| |
| class DisplayList; |
| |
| class RenderSVGResourceClipper final : public RenderSVGResourceContainer { |
| public: |
| enum ClipperState { |
| ClipperNotApplied, |
| ClipperAppliedPath, |
| ClipperAppliedMask |
| }; |
| |
| explicit RenderSVGResourceClipper(SVGClipPathElement*); |
| virtual ~RenderSVGResourceClipper(); |
| |
| virtual const char* renderName() const override { return "RenderSVGResourceClipper"; } |
| |
| virtual void removeAllClientsFromCache(bool markForInvalidation = true) override; |
| virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true) override; |
| |
| // FIXME: Filters are also stateful resources that could benefit from having their state managed |
| // on the caller stack instead of the current hashmap. We should look at refactoring these |
| // into a general interface that can be shared. |
| bool applyStatefulResource(RenderObject*, GraphicsContext*&, ClipperState&); |
| void postApplyStatefulResource(RenderObject*, GraphicsContext*&, ClipperState&); |
| |
| // clipPath can be clipped too, but don't have a boundingBox or paintInvalidationRect. So we can't call |
| // applyResource directly and use the rects from the object, since they are empty for RenderSVGResources |
| // FIXME: We made applyClippingToContext public because we cannot call applyResource on HTML elements (it asserts on RenderObject::objectBoundingBox) |
| bool applyClippingToContext(RenderObject*, const FloatRect&, const FloatRect&, GraphicsContext*, ClipperState&); |
| |
| FloatRect resourceBoundingBox(const RenderObject*); |
| |
| static const RenderSVGResourceType s_resourceType = ClipperResourceType; |
| virtual RenderSVGResourceType resourceType() const override { return s_resourceType; } |
| |
| bool hitTestClipContent(const FloatRect&, const FloatPoint&); |
| |
| SVGUnitTypes::SVGUnitType clipPathUnits() const { return toSVGClipPathElement(element())->clipPathUnits()->currentValue()->enumValue(); } |
| |
| private: |
| bool tryPathOnlyClipping(GraphicsContext*, const AffineTransform&, const FloatRect&); |
| void drawClipMaskContent(GraphicsContext*, const FloatRect& targetBoundingBox); |
| void createDisplayList(GraphicsContext*); |
| void calculateClipContentPaintInvalidationRect(); |
| |
| RefPtr<DisplayList> m_clipContentDisplayList; |
| FloatRect m_clipBoundaries; |
| |
| // Reference cycle detection. |
| bool m_inClipExpansion; |
| }; |
| |
| DEFINE_RENDER_SVG_RESOURCE_TYPE_CASTS(RenderSVGResourceClipper, ClipperResourceType); |
| |
| } |
| |
| #endif |