1/*
2 * Copyright (c) 2009, Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
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15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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29 */
30
31#ifndef RenderSVGModelObject_h
32#define RenderSVGModelObject_h
33
34#include "core/rendering/RenderObject.h"
35#include "core/svg/SVGElement.h"
36#include "platform/geometry/FloatRect.h"
37
38namespace blink {
39
40// Most renderers in the SVG rendering tree will inherit from this class
41// but not all. (e.g. RenderSVGForeignObject, RenderSVGBlock) thus methods
42// required by SVG renders need to be declared on RenderObject, but shared
43// logic can go in this class or in SVGRenderSupport.
44
45class SVGElement;
46
47class RenderSVGModelObject : public RenderObject {
48public:
49    explicit RenderSVGModelObject(SVGElement*);
50
51    virtual bool isChildAllowed(RenderObject*, RenderStyle*) const OVERRIDE;
52    virtual bool canHaveWhitespaceChildren() const OVERRIDE { return false; }
53
54    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const OVERRIDE;
55    virtual void computeFloatRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, FloatRect&, const PaintInvalidationState*) const OVERRIDE FINAL;
56
57    virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const OVERRIDE FINAL;
58    virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const OVERRIDE;
59
60    virtual void mapLocalToContainer(const RenderLayerModelObject* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0, const PaintInvalidationState* = 0) const OVERRIDE FINAL;
61    virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const OVERRIDE FINAL;
62    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
63
64    virtual void computeLayerHitTestRects(LayerHitTestRects&) const OVERRIDE FINAL;
65
66    SVGElement* element() const { return toSVGElement(RenderObject::node()); }
67
68    virtual bool isSVG() const OVERRIDE FINAL { return true; }
69
70protected:
71    virtual void addLayerHitTestRects(LayerHitTestRects&, const RenderLayer* currentCompositedLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const OVERRIDE FINAL;
72    virtual void willBeDestroyed() OVERRIDE;
73
74private:
75    // RenderSVGModelObject subclasses should use element() instead.
76    void node() const WTF_DELETED_FUNCTION;
77
78    // This method should never be called, SVG uses a different nodeAtPoint method
79    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE FINAL;
80    virtual IntRect absoluteFocusRingBoundingBoxRect() const OVERRIDE FINAL;
81
82    InvalidationReason invalidatePaintIfNeeded(const PaintInvalidationState&, const RenderLayerModelObject& paintInvalidationContainer) OVERRIDE FINAL;
83};
84
85}
86
87#endif
88