Home | History | Annotate | Download | only in svg 
      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 
     42 namespace blink {
     43 
     44 RenderSVGModelObject::RenderSVGModelObject(SVGElement* node)
     45     : RenderObject(node)
     46 {
     47 }
     48 
     49 bool RenderSVGModelObject::isChildAllowed(RenderObject* child, RenderStyle*) const
     50 {
     51     return child->isSVG() && !(child->isSVGInline() || child->isSVGInlineText());
     52 }
     53 
     54 LayoutRect RenderSVGModelObject::clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) const
     55 {
     56     return SVGRenderSupport::clippedOverflowRectForPaintInvalidation(this, paintInvalidationContainer, paintInvalidationState);
     57 }
     58 
     59 void RenderSVGModelObject::computeFloatRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, FloatRect& paintInvalidationRect, const PaintInvalidationState* paintInvalidationState) const
     60 {
     61     SVGRenderSupport::computeFloatRectForPaintInvalidation(this, paintInvalidationContainer, paintInvalidationRect, paintInvalidationState);
     62 }
     63 
     64 void 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 
     69 const RenderObject* RenderSVGModelObject::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
     70 {
     71     return SVGRenderSupport::pushMappingToContainer(this, ancestorToStopAt, geometryMap);
     72 }
     73 
     74 void 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 
     81 void RenderSVGModelObject::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
     82 {
     83     quads.append(localToAbsoluteQuad(strokeBoundingBox(), 0 /* mode */, wasFixed));
     84 }
     85 
     86 void RenderSVGModelObject::willBeDestroyed()
     87 {
     88     SVGResourcesCache::clientDestroyed(this);
     89     RenderObject::willBeDestroyed();
     90 }
     91 
     92 void 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 
     98 void 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 
    103 void 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 
    115 bool 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.
    123 IntRect RenderSVGModelObject::absoluteFocusRingBoundingBoxRect() const
    124 {
    125     return localToAbsoluteQuad(FloatQuad(paintInvalidationRectInLocalCoordinates())).enclosingBoundingBox();
    126 }
    127 
    128 InvalidationReason 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