15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> 353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * Copyright (C) 2013 Google Inc. All rights reserved. 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is free software; you can redistribute it and/or 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modify it under the terms of the GNU Library General Public 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * License as published by the Free Software Foundation; either 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * version 2 of the License, or (at your option) any later version. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is distributed in the hope that it will be useful, 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Library General Public License for more details. 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * You should have received a copy of the GNU Library General Public License 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Boston, MA 02110-1301, USA. 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef Filter_h 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define Filter_h 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 24a854de003a23bf3c7f95ec0f8154ada64092ff5cTorne (Richard Coles)#include "platform/PlatformExport.h" 251e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#include "platform/geometry/FloatRect.h" 261e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#include "platform/geometry/FloatSize.h" 27a854de003a23bf3c7f95ec0f8154ada64092ff5cTorne (Richard Coles)#include "platform/graphics/ImageBuffer.h" 28f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu#include "third_party/skia/include/core/SkImageFilter.h" 297757ec2eadfa2dd8ac2aeed0a4399e9b07ec38cbBen Murdoch#include "wtf/RefCounted.h" 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WebCore { 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class FilterEffect; 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 35a854de003a23bf3c7f95ec0f8154ada64092ff5cTorne (Richard Coles)class PLATFORM_EXPORT Filter : public RefCounted<Filter> { 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 3709380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) Filter(const AffineTransform& absoluteTransform) 3807a852d8c1953036774d8f3b65d18dcfea3bb4a2Ben Murdoch : m_absoluteTransform(absoluteTransform) 3909380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) , m_inverseTransform(absoluteTransform.inverse()) 4009380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) { 4109380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) // Filters can only accept scaling and translating transformations, as coordinates 4209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) // in most primitives are given in horizontal and vertical directions. 4309380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) ASSERT(!absoluteTransform.b() && !absoluteTransform.c()); 4409380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) } 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) virtual ~Filter() { } 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void setSourceImage(PassOwnPtr<ImageBuffer> sourceImage) { m_sourceImage = sourceImage; } 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ImageBuffer* sourceImage() { return m_sourceImage.get(); } 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 5053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) const AffineTransform& absoluteTransform() const { return m_absoluteTransform; } 5109380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) 5209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) void setAbsoluteTransform(const AffineTransform& absoluteTransform) 5309380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) { 5409380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) // Filters can only accept scaling and translating transformations, as coordinates 5509380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) // in most primitives are given in horizontal and vertical directions. 5609380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) ASSERT(!absoluteTransform.b() && !absoluteTransform.c()); 5709380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) m_absoluteTransform = absoluteTransform; 5809380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) m_inverseTransform = absoluteTransform.inverse(); 5909380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) m_absoluteFilterRegion = m_absoluteTransform.mapRect(m_filterRegion); 6009380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) } 6109380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) FloatPoint mapAbsolutePointToLocalPoint(const FloatPoint& point) const { return m_inverseTransform.mapPoint(point); } 6209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) FloatRect mapLocalRectToAbsoluteRect(const FloatRect& rect) const { return m_absoluteTransform.mapRect(rect); } 6309380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) FloatRect mapAbsoluteRectToLocalRect(const FloatRect& rect) const { return m_inverseTransform.mapRect(rect); } 6453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 65591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch virtual float applyHorizontalScale(float value) const 66591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch { 6709380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return value * m_absoluteTransform.a(); 68591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch } 69591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch virtual float applyVerticalScale(float value) const 70591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch { 7109380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return value * m_absoluteTransform.d(); 72591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch } 7376c265b59aa821ccbf8c75ab2bb0d036e97d2956Torne (Richard Coles) virtual FloatPoint3D resolve3dPoint(const FloatPoint3D& point) const { return point; } 7402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 7509380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) virtual IntRect sourceImageRect() const = 0; 76e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) 77e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) FloatRect absoluteFilterRegion() const { return m_absoluteFilterRegion; } 78e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) 79e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) FloatRect filterRegion() const { return m_filterRegion; } 8009380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) void setFilterRegion(const FloatRect& rect) 8109380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) { 8209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) m_filterRegion = rect; 8309380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) m_absoluteFilterRegion = m_absoluteTransform.mapRect(m_filterRegion); 8409380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) } 8509380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) 86d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) // The methods enableCache() and disableCache() are temporary, and we 87d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) // should address the real issue inside skia, thus simplifying what the 88d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) // clients have to know, and can remove these. 89d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) // Also note that this cache should no longer be used by Blink once the 90d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) // NON impl-side painting path is removed. 91d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) void enableCache() 92f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu { 93f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu if (!m_cache) 94f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu m_cache = adoptRef(SkImageFilter::Cache::Create(1)); 95f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu SkImageFilter::SetExternalCache(m_cache.get()); 96f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu } 97f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu 98d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) void disableCache() 99f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu { 100f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu SkImageFilter::SetExternalCache(0); 101f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu } 102f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu 103f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu void removeFromCache(SkImageFilter* filter) 104f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu { 105f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu if (m_cache) 106f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu m_cache->remove(filter); 107f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu } 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 1105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr<ImageBuffer> m_sourceImage; 11153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) AffineTransform m_absoluteTransform; 11209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) AffineTransform m_inverseTransform; 113e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) FloatRect m_absoluteFilterRegion; 114e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) FloatRect m_filterRegion; 115f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu RefPtr<SkImageFilter::Cache> m_cache; 1165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 1175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WebCore 1195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // Filter_h 121