| /* |
| * 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 THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_RESOURCE_CLIPPER_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_RESOURCE_CLIPPER_H_ |
| |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_resource_container.h" |
| #include "third_party/blink/renderer/core/svg/svg_unit_types.h" |
| #include "third_party/skia/include/core/SkRefCnt.h" |
| |
| namespace blink { |
| |
| class SVGClipPathElement; |
| |
| class LayoutSVGResourceClipper final : public LayoutSVGResourceContainer { |
| public: |
| explicit LayoutSVGResourceClipper(SVGClipPathElement*); |
| ~LayoutSVGResourceClipper() override; |
| |
| const char* GetName() const override { return "LayoutSVGResourceClipper"; } |
| |
| void RemoveAllClientsFromCache(bool mark_for_invalidation = true) override; |
| |
| FloatRect ResourceBoundingBox(const FloatRect& reference_box); |
| |
| static const LayoutSVGResourceType kResourceType = kClipperResourceType; |
| LayoutSVGResourceType ResourceType() const override { return kResourceType; } |
| |
| bool HitTestClipContent(const FloatRect&, const FloatPoint&); |
| |
| SVGUnitTypes::SVGUnitType ClipPathUnits() const; |
| AffineTransform CalculateClipTransform(const FloatRect& reference_box) const; |
| |
| base::Optional<Path> AsPath(); |
| sk_sp<const PaintRecord> CreatePaintRecord(); |
| |
| bool HasCycle() { return in_clip_expansion_; } |
| void BeginClipExpansion() { |
| DCHECK(!in_clip_expansion_); |
| in_clip_expansion_ = true; |
| } |
| void EndClipExpansion() { |
| DCHECK(in_clip_expansion_); |
| in_clip_expansion_ = false; |
| } |
| |
| protected: |
| void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override; |
| void WillBeDestroyed() override; |
| |
| private: |
| void CalculateLocalClipBounds(); |
| |
| // Cache of the clip path when using path clipping. |
| enum ClipContentPathValidity { |
| kClipContentPathUnknown, |
| kClipContentPathValid, |
| kClipContentPathInvalid |
| } clip_content_path_validity_ = kClipContentPathUnknown; |
| Path clip_content_path_; |
| |
| // Cache of the clip path paint record when falling back to masking for |
| // clipping. |
| sk_sp<const PaintRecord> cached_paint_record_; |
| |
| FloatRect local_clip_bounds_; |
| |
| // Reference cycle detection. |
| bool in_clip_expansion_; |
| }; |
| |
| DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(LayoutSVGResourceClipper, |
| kClipperResourceType); |
| |
| } // namespace blink |
| |
| #endif |