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.
14 *     * Neither the name of Google Inc. nor the names of its
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,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "core/rendering/svg/RenderSVGModelObject.h"
33
34#include "core/rendering/RenderLayer.h"
35#include "core/rendering/RenderView.h"
36#include "core/rendering/svg/RenderSVGContainer.h"
37#include "core/rendering/svg/RenderSVGRoot.h"
38#include "core/rendering/svg/SVGRenderSupport.h"
39#include "core/rendering/svg/SVGResourcesCache.h"
40#include "core/svg/SVGGraphicsElement.h"
41
42namespace blink {
43
44RenderSVGModelObject::RenderSVGModelObject(SVGElement* node)
45    : RenderObject(node)
46{
47}
48
49bool RenderSVGModelObject::isChildAllowed(RenderObject* child, RenderStyle*) const
50{
51    return child->isSVG() && !(child->isSVGInline() || child->isSVGInlineText());
52}
53
54LayoutRect RenderSVGModelObject::clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) const
55{
56    return SVGRenderSupport::clippedOverflowRectForPaintInvalidation(this, paintInvalidationContainer, paintInvalidationState);
57}
58
59void RenderSVGModelObject::computeFloatRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, FloatRect& paintInvalidationRect, const PaintInvalidationState* paintInvalidationState) const
60{
61    SVGRenderSupport::computeFloatRectForPaintInvalidation(this, paintInvalidationContainer, paintInvalidationRect, paintInvalidationState);
62}
63
64void RenderSVGModelObject::mapLocalToContainer(const RenderLayerModelObject* paintInvalidationContainer, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const
65{
66    SVGRenderSupport::mapLocalToContainer(this, paintInvalidationContainer, transformState, wasFixed, paintInvalidationState);
67}
68
69const RenderObject* RenderSVGModelObject::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
70{
71    return SVGRenderSupport::pushMappingToContainer(this, ancestorToStopAt, geometryMap);
72}
73
74void RenderSVGModelObject::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const
75{
76    IntRect rect = enclosingIntRect(strokeBoundingBox());
77    rect.moveBy(roundedIntPoint(accumulatedOffset));
78    rects.append(rect);
79}
80
81void RenderSVGModelObject::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
82{
83    quads.append(localToAbsoluteQuad(strokeBoundingBox(), 0 /* mode */, wasFixed));
84}
85
86void RenderSVGModelObject::willBeDestroyed()
87{
88    SVGResourcesCache::clientDestroyed(this);
89    RenderObject::willBeDestroyed();
90}
91
92void RenderSVGModelObject::computeLayerHitTestRects(LayerHitTestRects& rects) const
93{
94    // Using just the rect for the SVGRoot is good enough for now.
95    SVGRenderSupport::findTreeRootObject(this)->computeLayerHitTestRects(rects);
96}
97
98void RenderSVGModelObject::addLayerHitTestRects(LayerHitTestRects&, const RenderLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const
99{
100    // We don't walk into SVG trees at all - just report their container.
101}
102
103void RenderSVGModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
104{
105    if (diff.needsFullLayout()) {
106        setNeedsBoundariesUpdate();
107        if (style()->hasTransform())
108            setNeedsTransformUpdate();
109    }
110
111    RenderObject::styleDidChange(diff, oldStyle);
112    SVGResourcesCache::clientStyleChanged(this, diff, style());
113}
114
115bool RenderSVGModelObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction)
116{
117    ASSERT_NOT_REACHED();
118    return false;
119}
120
121// The SVG addFocusRingRects() method adds rects in local coordinates so the default absoluteFocusRingBoundingBoxRect
122// returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds.
123IntRect RenderSVGModelObject::absoluteFocusRingBoundingBoxRect() const
124{
125    return localToAbsoluteQuad(FloatQuad(paintInvalidationRectInLocalCoordinates())).enclosingBoundingBox();
126}
127
128InvalidationReason RenderSVGModelObject::invalidatePaintIfNeeded(const PaintInvalidationState& paintInvalidationState, const RenderLayerModelObject& paintInvalidationContainer)
129{
130    ForceHorriblySlowRectMapping slowRectMapping(&paintInvalidationState);
131
132    return RenderObject::invalidatePaintIfNeeded(paintInvalidationState, paintInvalidationContainer);
133}
134
135} // namespace blink
136