| /* |
| * Copyright (c) 2009, Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "RenderSVGModelObject.h" |
| |
| #include "RenderLayerModelObject.h" |
| #include "RenderSVGResource.h" |
| #include "SVGNames.h" |
| #include "SVGResourcesCache.h" |
| #include "ShadowRoot.h" |
| #include <wtf/IsoMallocInlines.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(RenderSVGModelObject); |
| |
| RenderSVGModelObject::RenderSVGModelObject(SVGElement& element, RenderStyle&& style) |
| : RenderElement(element, WTFMove(style), 0) |
| { |
| } |
| |
| LayoutRect RenderSVGModelObject::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const |
| { |
| return SVGRenderSupport::clippedOverflowRectForRepaint(*this, repaintContainer); |
| } |
| |
| Optional<FloatRect> RenderSVGModelObject::computeFloatVisibleRectInContainer(const FloatRect& rect, const RenderLayerModelObject* container, VisibleRectContext context) const |
| { |
| return SVGRenderSupport::computeFloatVisibleRectInContainer(*this, rect, container, context); |
| } |
| |
| void RenderSVGModelObject::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed) const |
| { |
| SVGRenderSupport::mapLocalToContainer(*this, repaintContainer, transformState, wasFixed); |
| } |
| |
| const RenderObject* RenderSVGModelObject::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const |
| { |
| return SVGRenderSupport::pushMappingToContainer(*this, ancestorToStopAt, geometryMap); |
| } |
| |
| // Copied from RenderBox, this method likely requires further refactoring to work easily for both SVG and CSS Box Model content. |
| // FIXME: This may also need to move into SVGRenderSupport as the RenderBox version depends |
| // on borderBoundingBox() which SVG RenderBox subclases (like SVGRenderBlock) do not implement. |
| LayoutRect RenderSVGModelObject::outlineBoundsForRepaint(const RenderLayerModelObject* repaintContainer, const RenderGeometryMap*) const |
| { |
| LayoutRect box = enclosingLayoutRect(repaintRectInLocalCoordinates()); |
| adjustRectForOutlineAndShadow(box); |
| |
| FloatQuad containerRelativeQuad = localToContainerQuad(FloatRect(box), repaintContainer); |
| return LayoutRect(snapRectToDevicePixels(LayoutRect(containerRelativeQuad.boundingBox()), document().deviceScaleFactor())); |
| } |
| |
| void RenderSVGModelObject::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const |
| { |
| IntRect rect = enclosingIntRect(strokeBoundingBox()); |
| rect.moveBy(roundedIntPoint(accumulatedOffset)); |
| rects.append(rect); |
| } |
| |
| void RenderSVGModelObject::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const |
| { |
| quads.append(localToAbsoluteQuad(strokeBoundingBox(), UseTransforms, wasFixed)); |
| } |
| |
| void RenderSVGModelObject::willBeDestroyed() |
| { |
| SVGResourcesCache::clientDestroyed(*this); |
| RenderElement::willBeDestroyed(); |
| } |
| |
| void RenderSVGModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) |
| { |
| if (diff == StyleDifference::Layout) { |
| setNeedsBoundariesUpdate(); |
| if (style().hasTransform()) |
| setNeedsTransformUpdate(); |
| } |
| RenderElement::styleDidChange(diff, oldStyle); |
| SVGResourcesCache::clientStyleChanged(*this, diff, style()); |
| } |
| |
| bool RenderSVGModelObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction) |
| { |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| |
| static void getElementCTM(SVGElement* element, AffineTransform& transform) |
| { |
| ASSERT(element); |
| |
| SVGElement* stopAtElement = SVGLocatable::nearestViewportElement(element); |
| ASSERT(stopAtElement); |
| |
| AffineTransform localTransform; |
| Node* current = element; |
| |
| while (current && current->isSVGElement()) { |
| SVGElement& currentElement = downcast<SVGElement>(*current); |
| localTransform = currentElement.renderer()->localToParentTransform(); |
| transform = localTransform.multiply(transform); |
| // For getCTM() computation, stop at the nearest viewport element |
| if (¤tElement == stopAtElement) |
| break; |
| |
| current = current->parentOrShadowHostNode(); |
| } |
| } |
| |
| // FloatRect::intersects does not consider horizontal or vertical lines (because of isEmpty()). |
| // So special-case handling of such lines. |
| static bool intersectsAllowingEmpty(const FloatRect& r, const FloatRect& other) |
| { |
| if (r.isEmpty() && other.isEmpty()) |
| return false; |
| if (r.isEmpty() && !other.isEmpty()) { |
| return (other.contains(r.x(), r.y()) && !other.contains(r.maxX(), r.maxY())) |
| || (!other.contains(r.x(), r.y()) && other.contains(r.maxX(), r.maxY())); |
| } |
| if (other.isEmpty() && !r.isEmpty()) |
| return intersectsAllowingEmpty(other, r); |
| return r.intersects(other); |
| } |
| |
| // One of the element types that can cause graphics to be drawn onto the target canvas. Specifically: circle, ellipse, |
| // image, line, path, polygon, polyline, rect, text and use. |
| static bool isGraphicsElement(const RenderElement& renderer) |
| { |
| return renderer.isSVGShape() || renderer.isSVGText() || renderer.isSVGImage() || renderer.element()->hasTagName(SVGNames::useTag); |
| } |
| |
| // The SVG addFocusRingRects() method adds rects in local coordinates so the default absoluteFocusRingQuads |
| // returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds. |
| void RenderSVGModelObject::absoluteFocusRingQuads(Vector<FloatQuad>& quads) |
| { |
| quads.append(localToAbsoluteQuad(FloatQuad(repaintRectInLocalCoordinates()))); |
| } |
| |
| bool RenderSVGModelObject::checkIntersection(RenderElement* renderer, const FloatRect& rect) |
| { |
| if (!renderer || renderer->style().pointerEvents() == PointerEvents::None) |
| return false; |
| if (!isGraphicsElement(*renderer)) |
| return false; |
| AffineTransform ctm; |
| SVGElement* svgElement = downcast<SVGElement>(renderer->element()); |
| getElementCTM(svgElement, ctm); |
| ASSERT(svgElement->renderer()); |
| return intersectsAllowingEmpty(rect, ctm.mapRect(svgElement->renderer()->repaintRectInLocalCoordinates())); |
| } |
| |
| bool RenderSVGModelObject::checkEnclosure(RenderElement* renderer, const FloatRect& rect) |
| { |
| if (!renderer || renderer->style().pointerEvents() == PointerEvents::None) |
| return false; |
| if (!isGraphicsElement(*renderer)) |
| return false; |
| AffineTransform ctm; |
| SVGElement* svgElement = downcast<SVGElement>(renderer->element()); |
| getElementCTM(svgElement, ctm); |
| ASSERT(svgElement->renderer()); |
| return rect.contains(ctm.mapRect(svgElement->renderer()->repaintRectInLocalCoordinates())); |
| } |
| |
| } // namespace WebCore |