Moving RenderSVG* files from rendering/ to layout/

Source/core/rendering/svg/RenderSVGPath.cpp

-/*
- * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
- * Copyright (C) 2004, 2005, 2008 Rob Buis <buis@kde.org>
- * Copyright (C) 2005, 2007 Eric Seidel <eric@webkit.org>
- * Copyright (C) 2009 Google, Inc.
- * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
- * Copyright (C) Research In Motion Limited 2010. All rights reserved.
- * Copyright (C) 2009 Jeff Schiller <codedread@gmail.com>
- * Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
- * Copyright (C) 2011 University of Szeged
- *
- * 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/RenderSVGPath.h"
-
-#include "core/layout/svg/LayoutSVGResourceMarker.h"
-#include "core/layout/svg/SVGResources.h"
-#include "core/layout/svg/SVGResourcesCache.h"
-#include "core/layout/svg/SVGSubpathData.h"
-#include "core/svg/SVGGraphicsElement.h"
-
-namespace blink {
-
-RenderSVGPath::RenderSVGPath(SVGGraphicsElement* node)
-    : RenderSVGShape(node)
-{
-}
-
-RenderSVGPath::~RenderSVGPath()
-{
-}
-
-void RenderSVGPath::updateShapeFromElement()
-{
-    RenderSVGShape::updateShapeFromElement();
-    updateZeroLengthSubpaths();
-
-    m_strokeBoundingBox = calculateUpdatedStrokeBoundingBox();
-}
-
-FloatRect RenderSVGPath::calculateUpdatedStrokeBoundingBox() const
-{
-    FloatRect strokeBoundingBox = m_strokeBoundingBox;
-
-    if (!m_markerPositions.isEmpty())
-        strokeBoundingBox.unite(markerRect(strokeWidth()));
-
-    if (style()->svgStyle().hasStroke()) {
-        // FIXME: zero-length subpaths do not respect vector-effect = non-scaling-stroke.
-        float strokeWidth = this->strokeWidth();
-        for (size_t i = 0; i < m_zeroLengthLinecapLocations.size(); ++i)
-            strokeBoundingBox.unite(zeroLengthSubpathRect(m_zeroLengthLinecapLocations[i], strokeWidth));
-    }
-
-    return strokeBoundingBox;
-}
-
-bool RenderSVGPath::shapeDependentStrokeContains(const FloatPoint& point)
-{
-    if (RenderSVGShape::shapeDependentStrokeContains(point))
-        return true;
-
-    const SVGLayoutStyle& svgStyle = style()->svgStyle();
-    for (size_t i = 0; i < m_zeroLengthLinecapLocations.size(); ++i) {
-        ASSERT(svgStyle.hasStroke());
-        float strokeWidth = this->strokeWidth();
-        if (svgStyle.capStyle() == SquareCap) {
-            if (zeroLengthSubpathRect(m_zeroLengthLinecapLocations[i], strokeWidth).contains(point))
-                return true;
-        } else {
-            ASSERT(svgStyle.capStyle() == RoundCap);
-            FloatPoint radiusVector(point.x() - m_zeroLengthLinecapLocations[i].x(), point.y() -  m_zeroLengthLinecapLocations[i].y());
-            if (radiusVector.lengthSquared() < strokeWidth * strokeWidth * .25f)
-                return true;
-        }
-    }
-    return false;
-}
-
-bool RenderSVGPath::shouldStrokeZeroLengthSubpath() const
-{
-    // Spec(11.4): Any zero length subpath shall not be stroked if the "stroke-linecap" property has a value of butt
-    // but shall be stroked if the "stroke-linecap" property has a value of round or square
-    return style()->svgStyle().hasStroke() && style()->svgStyle().capStyle() != ButtCap;
-}
-
-FloatRect RenderSVGPath::zeroLengthSubpathRect(const FloatPoint& linecapPosition, float strokeWidth)
-{
-    return FloatRect(linecapPosition.x() - strokeWidth / 2, linecapPosition.y() - strokeWidth / 2, strokeWidth, strokeWidth);
-}
-
-void RenderSVGPath::updateZeroLengthSubpaths()
-{
-    m_zeroLengthLinecapLocations.clear();
-
-    if (!strokeWidth() || !shouldStrokeZeroLengthSubpath())
-        return;
-
-    SVGSubpathData subpathData(m_zeroLengthLinecapLocations);
-    path().apply(&subpathData, SVGSubpathData::updateFromPathElement);
-    subpathData.pathIsDone();
-}
-
-FloatRect RenderSVGPath::markerRect(float strokeWidth) const
-{
-    ASSERT(!m_markerPositions.isEmpty());
-
-    SVGResources* resources = SVGResourcesCache::cachedResourcesForLayoutObject(this);
-    ASSERT(resources);
-
-    LayoutSVGResourceMarker* markerStart = resources->markerStart();
-    LayoutSVGResourceMarker* markerMid = resources->markerMid();
-    LayoutSVGResourceMarker* markerEnd = resources->markerEnd();
-    ASSERT(markerStart || markerMid || markerEnd);
-
-    FloatRect boundaries;
-    unsigned size = m_markerPositions.size();
-    for (unsigned i = 0; i < size; ++i) {
-        if (LayoutSVGResourceMarker* marker = SVGMarkerData::markerForType(m_markerPositions[i].type, markerStart, markerMid, markerEnd))
-            boundaries.unite(marker->markerBoundaries(marker->markerTransformation(m_markerPositions[i].origin, m_markerPositions[i].angle, strokeWidth)));
-    }
-    return boundaries;
-}
-
-bool RenderSVGPath::shouldGenerateMarkerPositions() const
-{
-    if (!style()->svgStyle().hasMarkers())
-        return false;
-
-    if (!SVGResources::supportsMarkers(*toSVGGraphicsElement(element())))
-        return false;
-
-    SVGResources* resources = SVGResourcesCache::cachedResourcesForLayoutObject(this);
-    if (!resources)
-        return false;
-
-    return resources->markerStart() || resources->markerMid() || resources->markerEnd();
-}
-
-void RenderSVGPath::processMarkerPositions()
-{
-    m_markerPositions.clear();
-
-    if (!shouldGenerateMarkerPositions())
-        return;
-
-    SVGResources* resources = SVGResourcesCache::cachedResourcesForLayoutObject(this);
-    ASSERT(resources);
-
-    LayoutSVGResourceMarker* markerStart = resources->markerStart();
-
-    SVGMarkerData markerData(m_markerPositions, markerStart ? markerStart->orientType() == SVGMarkerOrientAutoStartReverse : false);
-    path().apply(&markerData, SVGMarkerData::updateFromPathElement);
-    markerData.pathIsDone();
-}
-
-}