Move rendering/svg/RenderSVGResource* to layout/svg.

Source/core/rendering/svg/RenderSVGResourcePattern.cpp

-/*
- * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
- * Copyright (C) Research In Motion Limited 2010. All rights reserved.
- * Copyright 2014 The Chromium Authors. All rights reserved.
- *
- * 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/RenderSVGResourcePattern.h"
-
-#include "core/dom/ElementTraversal.h"
-#include "core/layout/svg/SVGLayoutSupport.h"
-#include "core/paint/SVGPaintContext.h"
-#include "core/paint/TransformRecorder.h"
-#include "core/svg/SVGFitToViewBox.h"
-#include "core/svg/SVGPatternElement.h"
-#include "platform/graphics/GraphicsContext.h"
-#include "platform/graphics/paint/DisplayItemList.h"
-#include "third_party/skia/include/core/SkPicture.h"
-
-namespace blink {
-
-struct PatternData {
-    WTF_MAKE_FAST_ALLOCATED;
-public:
-    RefPtr<Pattern> pattern;
-    AffineTransform transform;
-};
-
-RenderSVGResourcePattern::RenderSVGResourcePattern(SVGPatternElement* node)
-    : RenderSVGResourcePaintServer(node)
-    , m_shouldCollectPatternAttributes(true)
-#if ENABLE(OILPAN)
-    , m_attributesWrapper(PatternAttributesWrapper::create())
-#endif
-{
-}
-
-void RenderSVGResourcePattern::removeAllClientsFromCache(bool markForInvalidation)
-{
-    m_patternMap.clear();
-    m_shouldCollectPatternAttributes = true;
-    markAllClientsForInvalidation(markForInvalidation ? PaintInvalidation : ParentOnlyInvalidation);
-}
-
-void RenderSVGResourcePattern::removeClientFromCache(LayoutObject* client, bool markForInvalidation)
-{
-    ASSERT(client);
-    m_patternMap.remove(client);
-    markClientForInvalidation(client, markForInvalidation ? PaintInvalidation : ParentOnlyInvalidation);
-}
-
-PatternData* RenderSVGResourcePattern::patternForRenderer(const LayoutObject& object)
-{
-    ASSERT(!m_shouldCollectPatternAttributes);
-
-    // FIXME: the double hash lookup is needed to guard against paint-time invalidation
-    // (painting animated images may trigger layout invals which delete our map entry).
-    // Hopefully that will be addressed at some point, and then we can optimize the lookup.
-    if (PatternData* currentData = m_patternMap.get(&object))
-        return currentData;
-
-    return m_patternMap.set(&object, buildPatternData(object)).storedValue->value.get();
-}
-
-PassOwnPtr<PatternData> RenderSVGResourcePattern::buildPatternData(const LayoutObject& object)
-{
-    // If we couldn't determine the pattern content element root, stop here.
-    const PatternAttributes& attributes = this->attributes();
-    if (!attributes.patternContentElement())
-        return nullptr;
-
-    // An empty viewBox disables rendering.
-    if (attributes.hasViewBox() && attributes.viewBox().isEmpty())
-        return nullptr;
-
-    ASSERT(element());
-    // Compute tile metrics.
-    FloatRect clientBoundingBox = object.objectBoundingBox();
-    FloatRect tileBounds = SVGLengthContext::resolveRectangle(element(),
-        attributes.patternUnits(), clientBoundingBox,
-        attributes.x(), attributes.y(), attributes.width(), attributes.height());
-    if (tileBounds.isEmpty())
-        return nullptr;
-
-    AffineTransform tileTransform;
-    if (attributes.hasViewBox()) {
-        if (attributes.viewBox().isEmpty())
-            return nullptr;
-        tileTransform = SVGFitToViewBox::viewBoxToViewTransform(attributes.viewBox(),
-            attributes.preserveAspectRatio(), tileBounds.width(), tileBounds.height());
-    } else {
-        // A viewbox overrides patternContentUnits, per spec.
-        if (attributes.patternContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
-            tileTransform.scale(clientBoundingBox.width(), clientBoundingBox.height());
-    }
-
-    OwnPtr<PatternData> patternData = adoptPtr(new PatternData);
-    patternData->pattern = Pattern::createPicturePattern(asPicture(tileBounds, tileTransform));
-
-    // Compute pattern space transformation.
-    patternData->transform.translate(tileBounds.x(), tileBounds.y());
-    AffineTransform patternTransform = attributes.patternTransform();
-    if (!patternTransform.isIdentity())
-        patternData->transform = patternTransform * patternData->transform;
-
-    return patternData.release();
-}
-
-SVGPaintServer RenderSVGResourcePattern::preparePaintServer(const LayoutObject& object)
-{
-    clearInvalidationMask();
-
-    SVGPatternElement* patternElement = toSVGPatternElement(element());
-    if (!patternElement)
-        return SVGPaintServer::invalid();
-
-    if (m_shouldCollectPatternAttributes) {
-        patternElement->synchronizeAnimatedSVGAttribute(anyQName());
-
-#if ENABLE(OILPAN)
-        m_attributesWrapper->set(PatternAttributes());
-#else
-        m_attributes = PatternAttributes();
-#endif
-        patternElement->collectPatternAttributes(mutableAttributes());
-        m_shouldCollectPatternAttributes = false;
-    }
-
-    // Spec: When the geometry of the applicable element has no width or height and objectBoundingBox is specified,
-    // then the given effect (e.g. a gradient or a filter) will be ignored.
-    FloatRect objectBoundingBox = object.objectBoundingBox();
-    if (attributes().patternUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && objectBoundingBox.isEmpty())
-        return SVGPaintServer::invalid();
-
-    PatternData* patternData = patternForRenderer(object);
-    if (!patternData || !patternData->pattern)
-        return SVGPaintServer::invalid();
-
-    patternData->pattern->setPatternSpaceTransform(patternData->transform);
-
-    return SVGPaintServer(patternData->pattern);
-}
-
-PassRefPtr<const SkPicture> RenderSVGResourcePattern::asPicture(const FloatRect& tileBounds,
-    const AffineTransform& tileTransform) const
-{
-    ASSERT(!m_shouldCollectPatternAttributes);
-
-    AffineTransform contentTransform;
-    if (attributes().patternContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
-        contentTransform = tileTransform;
-
-    // Draw the content into a Picture.
-    OwnPtr<DisplayItemList> displayItemList;
-    if (RuntimeEnabledFeatures::slimmingPaintEnabled())
-        displayItemList = DisplayItemList::create();
-    GraphicsContext recordingContext(nullptr, displayItemList.get());
-    recordingContext.beginRecording(FloatRect(FloatPoint(), tileBounds.size()));
-
-    ASSERT(attributes().patternContentElement());
-    RenderSVGResourceContainer* patternRenderer =
-        toRenderSVGResourceContainer(attributes().patternContentElement()->renderer());
-    ASSERT(patternRenderer);
-    ASSERT(!patternRenderer->needsLayout());
-
-    SubtreeContentTransformScope contentTransformScope(contentTransform);
-
-    {
-        TransformRecorder transformRecorder(recordingContext, patternRenderer->displayItemClient(), tileTransform);
-        for (LayoutObject* child = patternRenderer->firstChild(); child; child = child->nextSibling())
-            SVGPaintContext::paintSubtree(&recordingContext, child);
-    }
-
-    if (displayItemList)
-        displayItemList->replay(&recordingContext);
-    return recordingContext.endRecording();
-}
-
-}