| /* |
| * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org> |
| * Copyright (C) 2006 Apple Computer, Inc. |
| * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2007, 2008, 2009 Rob Buis <buis@kde.org> |
| * Copyright (C) 2009 Google, Inc. |
| * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> |
| * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| |
| #include "core/rendering/svg/RenderSVGImage.h" |
| |
| #include "core/paint/SVGImagePainter.h" |
| #include "core/rendering/ImageQualityController.h" |
| #include "core/rendering/PointerEventsHitRules.h" |
| #include "core/rendering/RenderImageResource.h" |
| #include "core/rendering/svg/RenderSVGResourceContainer.h" |
| #include "core/rendering/svg/SVGRenderSupport.h" |
| #include "core/rendering/svg/SVGResources.h" |
| #include "core/rendering/svg/SVGResourcesCache.h" |
| #include "core/svg/SVGImageElement.h" |
| #include "platform/LengthFunctions.h" |
| #include "platform/graphics/DisplayList.h" |
| |
| namespace blink { |
| |
| RenderSVGImage::RenderSVGImage(SVGImageElement* impl) |
| : RenderSVGModelObject(impl) |
| , m_needsBoundariesUpdate(true) |
| , m_needsTransformUpdate(true) |
| , m_imageResource(RenderImageResource::create()) |
| { |
| m_imageResource->initialize(this); |
| } |
| |
| RenderSVGImage::~RenderSVGImage() |
| { |
| } |
| |
| void RenderSVGImage::destroy() |
| { |
| ImageQualityController::remove(this); |
| m_imageResource->shutdown(); |
| RenderSVGModelObject::destroy(); |
| } |
| |
| FloatSize RenderSVGImage::computeImageViewportSize(ImageResource& cachedImage) const |
| { |
| if (toSVGImageElement(element())->preserveAspectRatio()->currentValue()->align() != SVGPreserveAspectRatio::SVG_PRESERVEASPECTRATIO_NONE) |
| return m_objectBoundingBox.size(); |
| |
| // Images with preserveAspectRatio=none should force non-uniform |
| // scaling. This can be achieved by setting the image's container size to |
| // its viewport size (i.e. if a viewBox is available - use that - else use intrinsic size.) |
| // See: http://www.w3.org/TR/SVG/single-page.html, 7.8 The ‘preserveAspectRatio’ attribute. |
| Length intrinsicWidth; |
| Length intrinsicHeight; |
| FloatSize intrinsicRatio; |
| cachedImage.computeIntrinsicDimensions(intrinsicWidth, intrinsicHeight, intrinsicRatio); |
| return intrinsicRatio; |
| } |
| |
| bool RenderSVGImage::updateImageViewport() |
| { |
| SVGImageElement* image = toSVGImageElement(element()); |
| FloatRect oldBoundaries = m_objectBoundingBox; |
| |
| SVGLengthContext lengthContext(image); |
| m_objectBoundingBox = FloatRect(image->x()->currentValue()->value(lengthContext), image->y()->currentValue()->value(lengthContext), image->width()->currentValue()->value(lengthContext), image->height()->currentValue()->value(lengthContext)); |
| bool boundsChanged = oldBoundaries != m_objectBoundingBox; |
| |
| bool updatedViewport = false; |
| ImageResource* cachedImage = m_imageResource->cachedImage(); |
| if (cachedImage && cachedImage->usesImageContainerSize()) { |
| FloatSize imageViewportSize = computeImageViewportSize(*cachedImage); |
| if (imageViewportSize != m_imageResource->imageSize(style()->effectiveZoom())) { |
| m_imageResource->setContainerSizeForRenderer(roundedIntSize(imageViewportSize)); |
| updatedViewport = true; |
| } |
| } |
| |
| m_needsBoundariesUpdate |= boundsChanged; |
| return updatedViewport || boundsChanged; |
| } |
| |
| void RenderSVGImage::layout() |
| { |
| ASSERT(needsLayout()); |
| |
| updateImageViewport(); |
| |
| bool transformOrBoundariesUpdate = m_needsTransformUpdate || m_needsBoundariesUpdate; |
| if (m_needsTransformUpdate) { |
| m_localTransform = toSVGImageElement(element())->calculateAnimatedLocalTransform(); |
| m_needsTransformUpdate = false; |
| } |
| |
| if (m_needsBoundariesUpdate) { |
| m_bufferedForeground.clear(); |
| |
| m_paintInvalidationBoundingBox = m_objectBoundingBox; |
| SVGRenderSupport::intersectPaintInvalidationRectWithResources(this, m_paintInvalidationBoundingBox); |
| |
| m_needsBoundariesUpdate = false; |
| } |
| |
| // Invalidate all resources of this client if our layout changed. |
| if (everHadLayout() && selfNeedsLayout()) |
| SVGResourcesCache::clientLayoutChanged(this); |
| |
| // If our bounds changed, notify the parents. |
| if (transformOrBoundariesUpdate) |
| RenderSVGModelObject::setNeedsBoundariesUpdate(); |
| |
| clearNeedsLayout(); |
| } |
| |
| void RenderSVGImage::paint(PaintInfo& paintInfo, const LayoutPoint&) |
| { |
| SVGImagePainter(*this).paint(paintInfo); |
| } |
| |
| bool RenderSVGImage::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction) |
| { |
| // We only draw in the forground phase, so we only hit-test then. |
| if (hitTestAction != HitTestForeground) |
| return false; |
| |
| PointerEventsHitRules hitRules(PointerEventsHitRules::SVG_IMAGE_HITTESTING, request, style()->pointerEvents()); |
| bool isVisible = (style()->visibility() == VISIBLE); |
| if (isVisible || !hitRules.requireVisible) { |
| FloatPoint localPoint; |
| if (!SVGRenderSupport::transformToUserSpaceAndCheckClipping(this, localToParentTransform(), pointInParent, localPoint)) |
| return false; |
| |
| if (hitRules.canHitFill || hitRules.canHitBoundingBox) { |
| if (m_objectBoundingBox.contains(localPoint)) { |
| updateHitTestResult(result, roundedLayoutPoint(localPoint)); |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| void RenderSVGImage::imageChanged(WrappedImagePtr, const IntRect*) |
| { |
| // The image resource defaults to nullImage until the resource arrives. |
| // This empty image may be cached by SVG resources which must be invalidated. |
| if (SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(this)) |
| resources->removeClientFromCache(this); |
| |
| // Eventually notify parent resources, that we've changed. |
| RenderSVGResourceContainer::markForLayoutAndParentResourceInvalidation(this, false); |
| |
| // Update the SVGImageCache sizeAndScales entry in case image loading finished after layout. |
| // (https://bugs.webkit.org/show_bug.cgi?id=99489) |
| m_objectBoundingBox = FloatRect(); |
| updateImageViewport(); |
| |
| m_bufferedForeground.clear(); |
| |
| setShouldDoFullPaintInvalidation(); |
| } |
| |
| void RenderSVGImage::addFocusRingRects(Vector<LayoutRect>& rects, const LayoutPoint&, const RenderLayerModelObject*) const |
| { |
| // this is called from paint() after the localTransform has already been applied |
| LayoutRect contentRect = LayoutRect(paintInvalidationRectInLocalCoordinates()); |
| if (!contentRect.isEmpty()) |
| rects.append(contentRect); |
| } |
| |
| } // namespace blink |