Introduce SVGPathQuery to hold SVG path query methods

third_party/WebKit/Source/core/svg/SVGPathTraversalStateBuilder.cpp

-/*
- * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
- * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
- * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
- * Copyright (C) Research In Motion Limited 2010. 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/svg/SVGPathTraversalStateBuilder.h"
-
-#include "core/svg/SVGPathData.h"
-#include "platform/graphics/PathTraversalState.h"
-
-namespace blink {
-
-SVGPathTraversalStateBuilder::SVGPathTraversalStateBuilder(PathTraversalState::PathTraversalAction traversalAction, float desiredLength)
-    : m_traversalState(traversalAction)
-    , m_segmentIndex(0)
-{
-    m_traversalState.m_desiredLength = desiredLength;
-}
-
-void SVGPathTraversalStateBuilder::emitSegment(const PathSegmentData& segment)
-{
-    switch (segment.command) {
-    case PathSegMoveToAbs:
-        m_traversalState.m_totalLength += m_traversalState.moveTo(segment.targetPoint);
-        break;
-    case PathSegLineToAbs:
-        m_traversalState.m_totalLength += m_traversalState.lineTo(segment.targetPoint);
-        break;
-    case PathSegClosePath:
-        m_traversalState.m_totalLength += m_traversalState.closeSubpath();
-        break;
-    case PathSegCurveToCubicAbs:
-        m_traversalState.m_totalLength += m_traversalState.cubicBezierTo(segment.point1, segment.point2, segment.targetPoint);
-        break;
-    default:
-        ASSERT_NOT_REACHED();
-    }
-}
-
-bool SVGPathTraversalStateBuilder::continueConsuming()
-{
-    m_traversalState.processSegment();
-    return !m_traversalState.m_success;
-}
-
-void SVGPathTraversalStateBuilder::incrementPathSegmentCount()
-{
-    ++m_segmentIndex;
-}
-
-float SVGPathTraversalStateBuilder::totalLength()
-{
-    return m_traversalState.m_totalLength;
-}
-
-FloatPoint SVGPathTraversalStateBuilder::currentPoint()
-{
-    return m_traversalState.m_current;
-}
-
-}