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,
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/RenderSVGRoot.h"
37#include "core/rendering/svg/SVGRenderSupport.h"
38#include "core/rendering/svg/SVGResourcesCache.h"
39#include "core/svg/SVGGraphicsElement.h"
40
41namespace WebCore {
42
43RenderSVGModelObject::RenderSVGModelObject(SVGElement* node)
44    : RenderObject(node)
45{
46}
47
48bool RenderSVGModelObject::isChildAllowed(RenderObject* child, RenderStyle*) const
49{
50    return child->isSVG() && !(child->isSVGInline() || child->isSVGInlineText());
51}
52
53LayoutRect RenderSVGModelObject::clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer) const
54{
55    return SVGRenderSupport::clippedOverflowRectForRepaint(this, paintInvalidationContainer);
56}
57
58void RenderSVGModelObject::computeFloatRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, FloatRect& paintInvalidationRect, bool fixed) const
59{
60    SVGRenderSupport::computeFloatRectForRepaint(this, paintInvalidationContainer, paintInvalidationRect, fixed);
61}
62
63void RenderSVGModelObject::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed) const
64{
65    SVGRenderSupport::mapLocalToContainer(this, repaintContainer, transformState, wasFixed);
66}
67
68const RenderObject* RenderSVGModelObject::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
69{
70    return SVGRenderSupport::pushMappingToContainer(this, ancestorToStopAt, geometryMap);
71}
72
73void RenderSVGModelObject::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const
74{
75    IntRect rect = enclosingIntRect(strokeBoundingBox());
76    rect.moveBy(roundedIntPoint(accumulatedOffset));
77    rects.append(rect);
78}
79
80void RenderSVGModelObject::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
81{
82    quads.append(localToAbsoluteQuad(strokeBoundingBox(), 0 /* mode */, wasFixed));
83}
84
85void RenderSVGModelObject::willBeDestroyed()
86{
87    SVGResourcesCache::clientDestroyed(this);
88    RenderObject::willBeDestroyed();
89}
90
91void RenderSVGModelObject::computeLayerHitTestRects(LayerHitTestRects& rects) const
92{
93    // Using just the rect for the SVGRoot is good enough for now.
94    SVGRenderSupport::findTreeRootObject(this)->computeLayerHitTestRects(rects);
95}
96
97void RenderSVGModelObject::addLayerHitTestRects(LayerHitTestRects&, const RenderLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const
98{
99    // We don't walk into SVG trees at all - just report their container.
100}
101
102void RenderSVGModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
103{
104    if (diff.needsFullLayout()) {
105        setNeedsBoundariesUpdate();
106        if (style()->hasTransform())
107            setNeedsTransformUpdate();
108    }
109
110    RenderObject::styleDidChange(diff, oldStyle);
111    SVGResourcesCache::clientStyleChanged(this, diff, style());
112}
113
114bool RenderSVGModelObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction)
115{
116    ASSERT_NOT_REACHED();
117    return false;
118}
119
120// The SVG addFocusRingRects() method adds rects in local coordinates so the default absoluteFocusRingQuads
121// returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds.
122void RenderSVGModelObject::absoluteFocusRingQuads(Vector<FloatQuad>& quads)
123{
124    quads.append(localToAbsoluteQuad(FloatQuad(paintInvalidationRectInLocalCoordinates())));
125}
126
127void RenderSVGModelObject::invalidateTreeAfterLayout(const RenderLayerModelObject& paintInvalidationContainer)
128{
129    // Note: This is a reduced version of RenderBox::invalidateTreeAfterLayout().
130    // FIXME: Should share code with RenderBox::invalidateTreeAfterLayout().
131    ASSERT(RuntimeEnabledFeatures::repaintAfterLayoutEnabled());
132    ASSERT(!needsLayout());
133
134    if (!shouldCheckForPaintInvalidationAfterLayout())
135        return;
136
137    ForceHorriblySlowRectMapping slowRectMapping(*this);
138
139    const LayoutRect oldPaintInvalidationRect = previousPaintInvalidationRect();
140    const LayoutPoint oldPositionFromPaintInvalidationContainer = previousPositionFromPaintInvalidationContainer();
141    const RenderLayerModelObject& newPaintInvalidationContainer = *containerForPaintInvalidation();
142    setPreviousPaintInvalidationRect(clippedOverflowRectForPaintInvalidation(&newPaintInvalidationContainer));
143    setPreviousPositionFromPaintInvalidationContainer(RenderLayer::positionFromPaintInvalidationContainer(this, &newPaintInvalidationContainer));
144
145    // If an ancestor container had its transform changed, then we just
146    // need to update the RenderSVGModelObject's repaint rect above. The invalidation
147    // will be handled by the container where the transform changed. This essentially
148    // means that we prune the entire branch for performance.
149    if (!SVGRenderSupport::parentTransformDidChange(this))
150        return;
151
152    // If we are set to do a full paint invalidation that means the RenderView will be
153    // issue paint invalidations. We can then skip issuing of paint invalidations for the child
154    // renderers as they'll be covered by the RenderView.
155    if (view()->doingFullRepaint()) {
156        RenderObject::invalidateTreeAfterLayout(newPaintInvalidationContainer);
157        return;
158    }
159
160    const LayoutRect& newPaintInvalidationRect = previousPaintInvalidationRect();
161    const LayoutPoint& newPositionFromPaintInvalidationContainer = previousPositionFromPaintInvalidationContainer();
162    invalidatePaintAfterLayoutIfNeeded(containerForPaintInvalidation(),
163        shouldDoFullPaintInvalidationAfterLayout(), oldPaintInvalidationRect, oldPositionFromPaintInvalidationContainer,
164        &newPaintInvalidationRect, &newPositionFromPaintInvalidationContainer);
165
166    RenderObject::invalidateTreeAfterLayout(newPaintInvalidationContainer);
167}
168
169} // namespace WebCore
170