15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 2f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) * Copyright (C) 2013 Apple Inc. All rights reserved. 3926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) 2013 Google Inc. All rights reserved. 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions are 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * met: 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Redistributions of source code must retain the above copyright 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Redistributions in binary form must reproduce the above 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * copyright notice, this list of conditions and the following disclaimer 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * in the documentation and/or other materials provided with the 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * distribution. 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Neither the name of Google Inc. nor the names of its 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * contributors may be used to endorse or promote products derived from 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * this software without specific prior written permission. 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 3206f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles)#ifndef HTMLSrcsetParser_h 3306f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles)#define HTMLSrcsetParser_h 34926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 3506f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles)#include "wtf/text/WTFString.h" 36926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 37c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 389bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) 39f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles)enum { UninitializedDescriptor = -1 }; 406f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch 41f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles)class DescriptorParsingResult { 42f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles)public: 436f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch DescriptorParsingResult() 44f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) : m_density(UninitializedDescriptor) 45f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) , m_resourceWidth(UninitializedDescriptor) 46f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) , m_resourceHeight(UninitializedDescriptor) 476f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch { 486f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch } 496f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch 50f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) bool hasDensity() const { return m_density >= 0; } 51f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) bool hasWidth() const { return m_resourceWidth >= 0; } 52f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) bool hasHeight() const { return m_resourceHeight >= 0; } 53f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) 54f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) float density() const { ASSERT(hasDensity()); return m_density; } 55f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) unsigned resourceWidth() const { ASSERT(hasWidth()); return m_resourceWidth; } 56f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) unsigned resourceHeight() const { ASSERT(hasHeight()); return m_resourceHeight; } 57f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) 58f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) void setResourceWidth(int width) { ASSERT(width >= 0); m_resourceWidth = (unsigned)width; } 59f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) void setResourceHeight(int height) { ASSERT(height >= 0); m_resourceHeight = (unsigned)height; } 60f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) void setDensity(float densityToSet) { ASSERT(densityToSet >= 0); m_density = densityToSet; } 61f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) 62f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles)private: 63f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) float m_density; 64f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) int m_resourceWidth; 65f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) int m_resourceHeight; 666f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch}; 676f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch 6806f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles)class ImageCandidate { 699bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles)public: 706f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch enum OriginAttribute { 716f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch SrcsetOrigin, 726f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch SrcOrigin 736f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch }; 746f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch 7506f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) ImageCandidate() 76f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) : m_density(1.0) 775d92fedcae5e801a8b224de090094f2d9df0b54aTorne (Richard Coles) , m_resourceWidth(UninitializedDescriptor) 785d92fedcae5e801a8b224de090094f2d9df0b54aTorne (Richard Coles) , m_originAttribute(SrcsetOrigin) 799bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) { 809bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) } 819bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) 826f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch ImageCandidate(const String& source, unsigned start, unsigned length, const DescriptorParsingResult& result, OriginAttribute originAttribute) 8306f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) : m_string(source.createView(start, length)) 84f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) , m_density(result.hasDensity()?result.density():UninitializedDescriptor) 85f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) , m_resourceWidth(result.hasWidth()?result.resourceWidth():UninitializedDescriptor) 866f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch , m_originAttribute(originAttribute) 879bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) { 889bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) } 8906f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) 9006f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) String toString() const 9106f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) { 9209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return String(m_string.toString()); 9309380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) } 9409380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) 95d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) AtomicString url() const 9609380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) { 9709380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return AtomicString(m_string.toString()); 9806f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) } 9906f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) 100f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) void setDensity(float factor) 1016f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch { 102f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) m_density = factor; 1036f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch } 1046f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch 105f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) float density() const 1069bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) { 107f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) return m_density; 1089bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) } 10906f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) 1106f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch int resourceWidth() const 1116f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch { 1126f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch return m_resourceWidth; 1136f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch } 1146f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch 1156f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch bool srcOrigin() const 1166f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch { 1176f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch return (m_originAttribute == SrcOrigin); 1186f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch } 1196f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch 12006f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) inline bool isEmpty() const 12106f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) { 12206f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) return m_string.isEmpty(); 12306f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) } 12406f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) 1259bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles)private: 12606f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) StringView m_string; 127f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) float m_density; 1286f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch int m_resourceWidth; 1296f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch OriginAttribute m_originAttribute; 1305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 1319bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) 13210f88d5669dbd969c059d61ba09fa37dd72ac559Ben MurdochImageCandidate bestFitSourceForSrcsetAttribute(float deviceScaleFactor, unsigned sourceSize, const String& srcsetAttribute); 13306f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) 13410f88d5669dbd969c059d61ba09fa37dd72ac559Ben MurdochImageCandidate bestFitSourceForImageAttributes(float deviceScaleFactor, unsigned sourceSize, const String& srcAttribute, const String& srcsetAttribute); 13506f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) 13610f88d5669dbd969c059d61ba09fa37dd72ac559Ben MurdochString bestFitSourceForImageAttributes(float deviceScaleFactor, unsigned sourceSize, const String& srcAttribute, ImageCandidate& srcsetImageCandidate); 13706f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles) 13806f816c7c76bc45a15e452ade8a34e8af077693eTorne (Richard Coles)} 1399bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles) 1409bbd2f5e390b01907d97ecffde80aa1b06113aacTorne (Richard Coles)#endif 141