1 /* 2 * Copyright (C) 2009 Dirk Schulze <krit (at) webkit.org> 3 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 4 * Copyright (C) 2013 Google Inc. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 #include "config.h" 23 24 #include "core/svg/graphics/filters/SVGFilter.h" 25 26 namespace blink { 27 28 SVGFilter::SVGFilter(const IntRect& absoluteSourceDrawingRegion, const FloatRect& targetBoundingBox, const FloatRect& filterRegion, bool effectBBoxMode) 29 : Filter(AffineTransform()) 30 , m_absoluteSourceDrawingRegion(absoluteSourceDrawingRegion) 31 , m_targetBoundingBox(targetBoundingBox) 32 , m_effectBBoxMode(effectBBoxMode) 33 { 34 setFilterRegion(filterRegion); 35 } 36 37 float SVGFilter::applyHorizontalScale(float value) const 38 { 39 if (m_effectBBoxMode) 40 value *= m_targetBoundingBox.width(); 41 return Filter::applyHorizontalScale(value); 42 } 43 44 float SVGFilter::applyVerticalScale(float value) const 45 { 46 if (m_effectBBoxMode) 47 value *= m_targetBoundingBox.height(); 48 return Filter::applyVerticalScale(value); 49 } 50 51 FloatPoint3D SVGFilter::resolve3dPoint(const FloatPoint3D& point) const 52 { 53 if (!m_effectBBoxMode) 54 return point; 55 return FloatPoint3D(point.x() * m_targetBoundingBox.width() + m_targetBoundingBox.x(), 56 point.y() * m_targetBoundingBox.height() + m_targetBoundingBox.y(), 57 point.z() * sqrtf(m_targetBoundingBox.size().diagonalLengthSquared() / 2)); 58 } 59 60 PassRefPtr<SVGFilter> SVGFilter::create(const IntRect& absoluteSourceDrawingRegion, const FloatRect& targetBoundingBox, const FloatRect& filterRegion, bool effectBBoxMode) 61 { 62 return adoptRef(new SVGFilter(absoluteSourceDrawingRegion, targetBoundingBox, filterRegion, effectBBoxMode)); 63 } 64 65 } // namespace blink 66
