| /* |
| * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2009 Google, Inc. All rights reserved. |
| * Copyright (C) 2009 Apple Inc. 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_ROOT_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_ROOT_H_ |
| |
| #include "third_party/blink/renderer/core/layout/layout_replaced.h" |
| |
| namespace blink { |
| |
| class SVGElement; |
| enum class SVGTransformChange; |
| |
| class CORE_EXPORT LayoutSVGRoot final : public LayoutReplaced { |
| public: |
| explicit LayoutSVGRoot(SVGElement*); |
| ~LayoutSVGRoot() override; |
| |
| bool IsEmbeddedThroughSVGImage() const; |
| bool IsEmbeddedThroughFrameContainingSVGDocument() const; |
| |
| void IntrinsicSizingInfoChanged() const; |
| void UnscaledIntrinsicSizingInfo(IntrinsicSizingInfo&) const; |
| |
| // If you have a LayoutSVGRoot, use firstChild or lastChild instead. |
| void SlowFirstChild() const = delete; |
| void SlowLastChild() const = delete; |
| |
| LayoutObject* FirstChild() const { |
| DCHECK_EQ(Children(), VirtualChildren()); |
| return Children()->FirstChild(); |
| } |
| LayoutObject* LastChild() const { |
| DCHECK_EQ(Children(), VirtualChildren()); |
| return Children()->LastChild(); |
| } |
| |
| bool IsLayoutSizeChanged() const { return is_layout_size_changed_; } |
| bool DidScreenScaleFactorChange() const { |
| return did_screen_scale_factor_change_; |
| } |
| void SetNeedsBoundariesUpdate() override { |
| needs_boundaries_or_transform_update_ = true; |
| } |
| void SetNeedsTransformUpdate() override { |
| needs_boundaries_or_transform_update_ = true; |
| } |
| |
| IntSize ContainerSize() const { return container_size_; } |
| void SetContainerSize(const IntSize& container_size) { |
| // SVGImage::draw() does a view layout prior to painting, |
| // and we need that layout to know of the new size otherwise |
| // the layout may be incorrectly using the old size. |
| if (container_size_ != container_size) { |
| SetNeedsLayoutAndFullPaintInvalidation( |
| LayoutInvalidationReason::kSizeChanged); |
| } |
| container_size_ = container_size; |
| } |
| |
| // localToBorderBoxTransform maps local SVG viewport coordinates to local CSS |
| // box coordinates. |
| const AffineTransform& LocalToBorderBoxTransform() const { |
| return local_to_border_box_transform_; |
| } |
| |
| bool ShouldApplyViewportClip() const; |
| |
| LayoutRect VisualOverflowRect() const override; |
| |
| bool HasNonIsolatedBlendingDescendants() const final; |
| |
| const char* GetName() const override { return "LayoutSVGRoot"; } |
| |
| bool PaintedOutputOfObjectHasNoEffectRegardlessOfSize() const final; |
| |
| private: |
| bool ComputeShouldClipOverflow() const override { |
| return LayoutBox::ComputeShouldClipOverflow() || ShouldApplyViewportClip(); |
| } |
| |
| const LayoutObjectChildList* Children() const { return &children_; } |
| LayoutObjectChildList* Children() { return &children_; } |
| |
| LayoutObjectChildList* VirtualChildren() override { return Children(); } |
| const LayoutObjectChildList* VirtualChildren() const override { |
| return Children(); |
| } |
| |
| bool IsOfType(LayoutObjectType type) const override { |
| return type == kLayoutObjectSVG || type == kLayoutObjectSVGRoot || |
| LayoutReplaced::IsOfType(type); |
| } |
| |
| void ComputeIntrinsicSizingInfo(IntrinsicSizingInfo&) const override; |
| LayoutUnit ComputeReplacedLogicalWidth( |
| ShouldComputePreferred = kComputeActual) const override; |
| LayoutUnit ComputeReplacedLogicalHeight( |
| LayoutUnit estimated_used_width = LayoutUnit()) const override; |
| void UpdateLayout() override; |
| void PaintReplaced(const PaintInfo&, |
| const LayoutPoint& paint_offset) const override; |
| |
| void WillBeDestroyed() override; |
| void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override; |
| bool IsChildAllowed(LayoutObject*, const ComputedStyle&) const override; |
| void AddChild(LayoutObject* child, |
| LayoutObject* before_child = nullptr) override; |
| void RemoveChild(LayoutObject*) override; |
| |
| void InsertedIntoTree() override; |
| void WillBeRemovedFromTree() override; |
| |
| AffineTransform LocalToSVGParentTransform() const override; |
| |
| FloatRect ObjectBoundingBox() const override { return object_bounding_box_; } |
| FloatRect StrokeBoundingBox() const override { return stroke_bounding_box_; } |
| FloatRect VisualRectInLocalSVGCoordinates() const override { |
| return visual_rect_in_local_svg_coordinates_; |
| } |
| |
| bool NodeAtPoint(HitTestResult&, |
| const HitTestLocation& location_in_container, |
| const LayoutPoint& accumulated_offset, |
| HitTestAction) override; |
| |
| LayoutRect LocalVisualRectIgnoringVisibility() const override; |
| |
| void MapLocalToAncestor( |
| const LayoutBoxModelObject* ancestor, |
| TransformState&, |
| MapCoordinatesFlags = kApplyContainerFlip) const override; |
| const LayoutObject* PushMappingToContainer( |
| const LayoutBoxModelObject* ancestor_to_stop_at, |
| LayoutGeometryMap&) const override; |
| |
| bool CanHaveChildren() const override { return true; } |
| |
| void DescendantIsolationRequirementsChanged(DescendantIsolationState) final; |
| |
| bool IntrinsicSizeIsFontMetricsDependent() const; |
| bool StyleChangeAffectsIntrinsicSize(const ComputedStyle& old_style) const; |
| |
| void UpdateCachedBoundaries(); |
| SVGTransformChange BuildLocalToBorderBoxTransform(); |
| |
| PositionWithAffinity PositionForPoint(const LayoutPoint&) const final; |
| |
| LayoutObjectChildList children_; |
| IntSize container_size_; |
| FloatRect object_bounding_box_; |
| bool object_bounding_box_valid_; |
| FloatRect stroke_bounding_box_; |
| FloatRect visual_rect_in_local_svg_coordinates_; |
| AffineTransform local_to_border_box_transform_; |
| bool is_layout_size_changed_ : 1; |
| bool did_screen_scale_factor_change_ : 1; |
| bool needs_boundaries_or_transform_update_ : 1; |
| bool has_box_decoration_background_ : 1; |
| mutable bool has_non_isolated_blending_descendants_ : 1; |
| mutable bool has_non_isolated_blending_descendants_dirty_ : 1; |
| }; |
| |
| DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGRoot, IsSVGRoot()); |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_ROOT_H_ |