Moving RenderSVG* files from rendering/ to layout/

Source/core/rendering/svg/RenderSVGImage.cpp

-/*
- * 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/layout/ImageQualityController.h"
-#include "core/layout/LayoutImageResource.h"
-#include "core/layout/PointerEventsHitRules.h"
-#include "core/layout/svg/LayoutSVGResourceContainer.h"
-#include "core/layout/svg/SVGLayoutSupport.h"
-#include "core/layout/svg/SVGResources.h"
-#include "core/layout/svg/SVGResourcesCache.h"
-#include "core/paint/SVGImagePainter.h"
-#include "core/svg/SVGImageElement.h"
-#include "platform/LengthFunctions.h"
-#include "third_party/skia/include/core/SkPicture.h"
-
-namespace blink {
-
-RenderSVGImage::RenderSVGImage(SVGImageElement* impl)
-    : RenderSVGModelObject(impl)
-    , m_needsBoundariesUpdate(true)
-    , m_needsTransformUpdate(true)
-    , m_imageResource(LayoutImageResource::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;
-}
-
-static bool containerSizeIsSetForRenderer(ImageResource& cachedImage, const LayoutObject* renderer)
-{
-    const Image* image = cachedImage.image();
-    // If a container size has been specified for this renderer, then
-    // imageForRenderer() will return the SVGImageForContainer while image()
-    // will return the underlying SVGImage.
-    return !image->isSVGImage() || image != cachedImage.imageForRenderer(renderer);
-}
-
-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 (LayoutSize(imageViewportSize) != m_imageResource->imageSize(style()->effectiveZoom())
-            || !containerSizeIsSetForRenderer(*cachedImage, this)) {
-            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;
-        SVGLayoutSupport::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(const 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 (!SVGLayoutSupport::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::cachedResourcesForLayoutObject(this))
-        resources->removeClientFromCache(this);
-
-    // Eventually notify parent resources, that we've changed.
-    LayoutSVGResourceContainer::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
-{
-    // this is called from paint() after the localTransform has already been applied
-    LayoutRect contentRect = LayoutRect(paintInvalidationRectInLocalCoordinates());
-    if (!contentRect.isEmpty())
-        rects.append(contentRect);
-}
-
-} // namespace blink