| /* |
| * 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 "core/layout/svg/LayoutSVGModelObject.h" |
| |
| #include "core/layout/LayoutView.h" |
| #include "core/layout/svg/LayoutSVGContainer.h" |
| #include "core/layout/svg/LayoutSVGRoot.h" |
| #include "core/layout/svg/SVGLayoutSupport.h" |
| #include "core/layout/svg/SVGResourcesCache.h" |
| #include "core/paint/PaintLayer.h" |
| #include "core/svg/SVGGraphicsElement.h" |
| |
| namespace blink { |
| |
| LayoutSVGModelObject::LayoutSVGModelObject(SVGElement* node) |
| : LayoutObject(node) |
| { |
| } |
| |
| bool LayoutSVGModelObject::isChildAllowed(LayoutObject* child, const ComputedStyle&) const |
| { |
| return child->isSVG() && !(child->isSVGInline() || child->isSVGInlineText() || child->isSVGGradientStop()); |
| } |
| |
| LayoutRect LayoutSVGModelObject::clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) const |
| { |
| return SVGLayoutSupport::clippedOverflowRectForPaintInvalidation(*this, paintInvalidationContainer, paintInvalidationState); |
| } |
| |
| void LayoutSVGModelObject::mapLocalToAncestor(const LayoutBoxModelObject* ancestor, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const |
| { |
| SVGLayoutSupport::mapLocalToAncestor(this, ancestor, transformState, wasFixed, paintInvalidationState); |
| } |
| |
| void LayoutSVGModelObject::mapAncestorToLocal(const LayoutBoxModelObject* ancestor, TransformState& transformState, MapCoordinatesFlags) const |
| { |
| SVGLayoutSupport::mapAncestorToLocal(*this, ancestor, transformState); |
| } |
| |
| const LayoutObject* LayoutSVGModelObject::pushMappingToContainer(const LayoutBoxModelObject* ancestorToStopAt, LayoutGeometryMap& geometryMap) const |
| { |
| return SVGLayoutSupport::pushMappingToContainer(this, ancestorToStopAt, geometryMap); |
| } |
| |
| void LayoutSVGModelObject::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const |
| { |
| IntRect rect = enclosingIntRect(strokeBoundingBox()); |
| rect.moveBy(roundedIntPoint(accumulatedOffset)); |
| rects.append(rect); |
| } |
| |
| void LayoutSVGModelObject::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const |
| { |
| quads.append(localToAbsoluteQuad(strokeBoundingBox(), 0 /* mode */, wasFixed)); |
| } |
| |
| void LayoutSVGModelObject::willBeDestroyed() |
| { |
| SVGResourcesCache::clientDestroyed(this); |
| LayoutObject::willBeDestroyed(); |
| } |
| |
| void LayoutSVGModelObject::computeLayerHitTestRects(LayerHitTestRects& rects) const |
| { |
| // Using just the rect for the SVGRoot is good enough for now. |
| SVGLayoutSupport::findTreeRootObject(this)->computeLayerHitTestRects(rects); |
| } |
| |
| void LayoutSVGModelObject::addLayerHitTestRects(LayerHitTestRects&, const PaintLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const |
| { |
| // We don't walk into SVG trees at all - just report their container. |
| } |
| |
| void LayoutSVGModelObject::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle) |
| { |
| if (diff.needsFullLayout()) { |
| setNeedsBoundariesUpdate(); |
| if (diff.transformChanged()) |
| setNeedsTransformUpdate(); |
| } |
| |
| if (isBlendingAllowed()) { |
| bool hasBlendModeChanged = (oldStyle && oldStyle->hasBlendMode()) == !style()->hasBlendMode(); |
| if (parent() && hasBlendModeChanged) |
| parent()->descendantIsolationRequirementsChanged(style()->hasBlendMode() ? DescendantIsolationRequired : DescendantIsolationNeedsUpdate); |
| } |
| |
| LayoutObject::styleDidChange(diff, oldStyle); |
| SVGResourcesCache::clientStyleChanged(this, diff, styleRef()); |
| } |
| |
| bool LayoutSVGModelObject::nodeAtPoint(HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction) |
| { |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| |
| // The SVG addOutlineRects() method adds rects in local coordinates so the default absoluteElementBoundingBoxRect() |
| // returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds. |
| IntRect LayoutSVGModelObject::absoluteElementBoundingBoxRect() const |
| { |
| return localToAbsoluteQuad(FloatQuad(paintInvalidationRectInLocalCoordinates())).enclosingBoundingBox(); |
| } |
| |
| void LayoutSVGModelObject::invalidateTreeIfNeeded(PaintInvalidationState& paintInvalidationState) |
| { |
| ASSERT(!needsLayout()); |
| |
| // If we didn't need paint invalidation then our children don't need as well. |
| // Skip walking down the tree as everything should be fine below us. |
| if (!shouldCheckForPaintInvalidation(paintInvalidationState)) |
| return; |
| |
| invalidatePaintIfNeeded(paintInvalidationState, paintInvalidationState.paintInvalidationContainer()); |
| clearPaintInvalidationState(paintInvalidationState); |
| |
| PaintInvalidationState childPaintInvalidationState(paintInvalidationState, *this); |
| invalidatePaintOfSubtreesIfNeeded(childPaintInvalidationState); |
| } |
| |
| } // namespace blink |