1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 3 * (C) 2000 Antti Koivisto (koivisto@kde.org) 4 * (C) 2000 Dirk Mueller (mueller@kde.org) 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 6 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com) 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 * 23 */ 24 25 #ifndef FillLayer_h 26 #define FillLayer_h 27 28 #include "core/rendering/style/RenderStyleConstants.h" 29 #include "core/rendering/style/StyleImage.h" 30 #include "platform/Length.h" 31 #include "platform/LengthSize.h" 32 #include "platform/graphics/GraphicsTypes.h" 33 #include "wtf/RefPtr.h" 34 35 namespace WebCore { 36 37 struct FillSize { FillSizeFillSize38 FillSize() 39 : type(SizeLength) 40 { 41 } 42 FillSizeFillSize43 FillSize(EFillSizeType t, const LengthSize& l) 44 : type(t) 45 , size(l) 46 { 47 } 48 49 bool operator==(const FillSize& o) const 50 { 51 return type == o.type && size == o.size; 52 } 53 bool operator!=(const FillSize& o) const 54 { 55 return !(*this == o); 56 } 57 58 EFillSizeType type; 59 LengthSize size; 60 }; 61 62 class FillLayer { 63 WTF_MAKE_FAST_ALLOCATED; 64 public: 65 FillLayer(EFillLayerType, bool useInitialValues = false); 66 ~FillLayer(); 67 image()68 StyleImage* image() const { return m_image.get(); } xPosition()69 const Length& xPosition() const { return m_xPosition; } yPosition()70 const Length& yPosition() const { return m_yPosition; } backgroundXOrigin()71 BackgroundEdgeOrigin backgroundXOrigin() const { return static_cast<BackgroundEdgeOrigin>(m_backgroundXOrigin); } backgroundYOrigin()72 BackgroundEdgeOrigin backgroundYOrigin() const { return static_cast<BackgroundEdgeOrigin>(m_backgroundYOrigin); } attachment()73 EFillAttachment attachment() const { return static_cast<EFillAttachment>(m_attachment); } clip()74 EFillBox clip() const { return static_cast<EFillBox>(m_clip); } origin()75 EFillBox origin() const { return static_cast<EFillBox>(m_origin); } repeatX()76 EFillRepeat repeatX() const { return static_cast<EFillRepeat>(m_repeatX); } repeatY()77 EFillRepeat repeatY() const { return static_cast<EFillRepeat>(m_repeatY); } composite()78 CompositeOperator composite() const { return static_cast<CompositeOperator>(m_composite); } blendMode()79 blink::WebBlendMode blendMode() const { return static_cast<blink::WebBlendMode>(m_blendMode); } sizeLength()80 const LengthSize& sizeLength() const { return m_sizeLength; } sizeType()81 EFillSizeType sizeType() const { return static_cast<EFillSizeType>(m_sizeType); } size()82 FillSize size() const { return FillSize(static_cast<EFillSizeType>(m_sizeType), m_sizeLength); } maskSourceType()83 EMaskSourceType maskSourceType() const { return static_cast<EMaskSourceType>(m_maskSourceType); } 84 next()85 const FillLayer* next() const { return m_next; } next()86 FillLayer* next() { return m_next; } 87 isImageSet()88 bool isImageSet() const { return m_imageSet; } isXPositionSet()89 bool isXPositionSet() const { return m_xPosSet; } isYPositionSet()90 bool isYPositionSet() const { return m_yPosSet; } isBackgroundXOriginSet()91 bool isBackgroundXOriginSet() const { return m_backgroundXOriginSet; } isBackgroundYOriginSet()92 bool isBackgroundYOriginSet() const { return m_backgroundYOriginSet; } isAttachmentSet()93 bool isAttachmentSet() const { return m_attachmentSet; } isClipSet()94 bool isClipSet() const { return m_clipSet; } isOriginSet()95 bool isOriginSet() const { return m_originSet; } isRepeatXSet()96 bool isRepeatXSet() const { return m_repeatXSet; } isRepeatYSet()97 bool isRepeatYSet() const { return m_repeatYSet; } isCompositeSet()98 bool isCompositeSet() const { return m_compositeSet; } isBlendModeSet()99 bool isBlendModeSet() const { return m_blendModeSet; } isSizeSet()100 bool isSizeSet() const { return m_sizeType != SizeNone; } isMaskSourceTypeSet()101 bool isMaskSourceTypeSet() const { return m_maskSourceTypeSet; } 102 setImage(PassRefPtr<StyleImage> i)103 void setImage(PassRefPtr<StyleImage> i) { m_image = i; m_imageSet = true; } setXPosition(const Length & position)104 void setXPosition(const Length& position) { m_xPosition = position; m_xPosSet = true; m_backgroundXOriginSet = false; m_backgroundXOrigin = LeftEdge; } setYPosition(const Length & position)105 void setYPosition(const Length& position) { m_yPosition = position; m_yPosSet = true; m_backgroundYOriginSet = false; m_backgroundYOrigin = TopEdge; } setBackgroundXOrigin(BackgroundEdgeOrigin origin)106 void setBackgroundXOrigin(BackgroundEdgeOrigin origin) { m_backgroundXOrigin = origin; m_backgroundXOriginSet = true; } setBackgroundYOrigin(BackgroundEdgeOrigin origin)107 void setBackgroundYOrigin(BackgroundEdgeOrigin origin) { m_backgroundYOrigin = origin; m_backgroundYOriginSet = true; } setAttachment(EFillAttachment attachment)108 void setAttachment(EFillAttachment attachment) { m_attachment = attachment; m_attachmentSet = true; } setClip(EFillBox b)109 void setClip(EFillBox b) { m_clip = b; m_clipSet = true; } setOrigin(EFillBox b)110 void setOrigin(EFillBox b) { m_origin = b; m_originSet = true; } setRepeatX(EFillRepeat r)111 void setRepeatX(EFillRepeat r) { m_repeatX = r; m_repeatXSet = true; } setRepeatY(EFillRepeat r)112 void setRepeatY(EFillRepeat r) { m_repeatY = r; m_repeatYSet = true; } setComposite(CompositeOperator c)113 void setComposite(CompositeOperator c) { m_composite = c; m_compositeSet = true; } setBlendMode(blink::WebBlendMode b)114 void setBlendMode(blink::WebBlendMode b) { m_blendMode = b; m_blendModeSet = true; } setSizeType(EFillSizeType b)115 void setSizeType(EFillSizeType b) { m_sizeType = b; } setSizeLength(const LengthSize & l)116 void setSizeLength(const LengthSize& l) { m_sizeLength = l; } setSize(FillSize f)117 void setSize(FillSize f) { m_sizeType = f.type; m_sizeLength = f.size; } setMaskSourceType(EMaskSourceType m)118 void setMaskSourceType(EMaskSourceType m) { m_maskSourceType = m; m_maskSourceTypeSet = true; } 119 clearImage()120 void clearImage() { m_image.clear(); m_imageSet = false; } clearXPosition()121 void clearXPosition() 122 { 123 m_xPosSet = false; 124 m_backgroundXOriginSet = false; 125 } clearYPosition()126 void clearYPosition() 127 { 128 m_yPosSet = false; 129 m_backgroundYOriginSet = false; 130 } 131 clearAttachment()132 void clearAttachment() { m_attachmentSet = false; } clearClip()133 void clearClip() { m_clipSet = false; } clearOrigin()134 void clearOrigin() { m_originSet = false; } clearRepeatX()135 void clearRepeatX() { m_repeatXSet = false; } clearRepeatY()136 void clearRepeatY() { m_repeatYSet = false; } clearComposite()137 void clearComposite() { m_compositeSet = false; } clearBlendMode()138 void clearBlendMode() { m_blendModeSet = false; } clearSize()139 void clearSize() { m_sizeType = SizeNone; } clearMaskSourceType()140 void clearMaskSourceType() { m_maskSourceTypeSet = false; } 141 setNext(FillLayer * n)142 void setNext(FillLayer* n) { if (m_next != n) { delete m_next; m_next = n; } } 143 144 FillLayer& operator=(const FillLayer& o); 145 FillLayer(const FillLayer& o); 146 147 bool operator==(const FillLayer& o) const; 148 bool operator!=(const FillLayer& o) const 149 { 150 return !(*this == o); 151 } 152 153 bool containsImage(StyleImage*) const; 154 bool imagesAreLoaded() const; 155 hasImage()156 bool hasImage() const 157 { 158 if (m_image) 159 return true; 160 return m_next ? m_next->hasImage() : false; 161 } 162 hasFixedImage()163 bool hasFixedImage() const 164 { 165 if (m_image && m_attachment == FixedBackgroundAttachment) 166 return true; 167 return m_next ? m_next->hasFixedImage() : false; 168 } 169 170 bool hasOpaqueImage(const RenderObject*) const; 171 bool hasRepeatXY() const; 172 bool clipOccludesNextLayers(bool firstLayer) const; 173 type()174 EFillLayerType type() const { return static_cast<EFillLayerType>(m_type); } 175 176 void fillUnsetProperties(); 177 void cullEmptyLayers(); 178 initialFillAttachment(EFillLayerType)179 static EFillAttachment initialFillAttachment(EFillLayerType) { return ScrollBackgroundAttachment; } initialFillClip(EFillLayerType)180 static EFillBox initialFillClip(EFillLayerType) { return BorderFillBox; } initialFillOrigin(EFillLayerType type)181 static EFillBox initialFillOrigin(EFillLayerType type) { return type == BackgroundFillLayer ? PaddingFillBox : BorderFillBox; } initialFillRepeatX(EFillLayerType)182 static EFillRepeat initialFillRepeatX(EFillLayerType) { return RepeatFill; } initialFillRepeatY(EFillLayerType)183 static EFillRepeat initialFillRepeatY(EFillLayerType) { return RepeatFill; } initialFillComposite(EFillLayerType)184 static CompositeOperator initialFillComposite(EFillLayerType) { return CompositeSourceOver; } initialFillBlendMode(EFillLayerType)185 static blink::WebBlendMode initialFillBlendMode(EFillLayerType) { return blink::WebBlendModeNormal; } initialFillSizeType(EFillLayerType)186 static EFillSizeType initialFillSizeType(EFillLayerType) { return SizeLength; } initialFillSizeLength(EFillLayerType)187 static LengthSize initialFillSizeLength(EFillLayerType) { return LengthSize(); } initialFillSize(EFillLayerType type)188 static FillSize initialFillSize(EFillLayerType type) { return FillSize(initialFillSizeType(type), initialFillSizeLength(type)); } initialFillXPosition(EFillLayerType)189 static Length initialFillXPosition(EFillLayerType) { return Length(0.0, Percent); } initialFillYPosition(EFillLayerType)190 static Length initialFillYPosition(EFillLayerType) { return Length(0.0, Percent); } initialFillImage(EFillLayerType)191 static StyleImage* initialFillImage(EFillLayerType) { return 0; } initialFillMaskSourceType(EFillLayerType)192 static EMaskSourceType initialFillMaskSourceType(EFillLayerType) { return MaskAlpha; } 193 194 private: 195 friend class RenderStyle; 196 197 void computeClipMax() const; 198 FillLayer()199 FillLayer() { } 200 201 FillLayer* m_next; 202 203 RefPtr<StyleImage> m_image; 204 205 Length m_xPosition; 206 Length m_yPosition; 207 208 LengthSize m_sizeLength; 209 210 unsigned m_attachment : 2; // EFillAttachment 211 unsigned m_clip : 2; // EFillBox 212 unsigned m_origin : 2; // EFillBox 213 unsigned m_repeatX : 3; // EFillRepeat 214 unsigned m_repeatY : 3; // EFillRepeat 215 unsigned m_composite : 4; // CompositeOperator 216 unsigned m_sizeType : 2; // EFillSizeType 217 unsigned m_blendMode : 5; // blink::WebBlendMode 218 unsigned m_maskSourceType : 1; // EMaskSourceType 219 unsigned m_backgroundXOrigin : 2; // BackgroundEdgeOrigin 220 unsigned m_backgroundYOrigin : 2; // BackgroundEdgeOrigin 221 222 unsigned m_imageSet : 1; 223 unsigned m_attachmentSet : 1; 224 unsigned m_clipSet : 1; 225 unsigned m_originSet : 1; 226 unsigned m_repeatXSet : 1; 227 unsigned m_repeatYSet : 1; 228 unsigned m_xPosSet : 1; 229 unsigned m_yPosSet : 1; 230 unsigned m_backgroundXOriginSet : 1; 231 unsigned m_backgroundYOriginSet : 1; 232 unsigned m_compositeSet : 1; 233 unsigned m_blendModeSet : 1; 234 unsigned m_maskSourceTypeSet : 1; 235 236 unsigned m_type : 1; // EFillLayerType 237 238 mutable unsigned m_clipMax : 2; // EFillBox, maximum m_clip value from this to bottom layer 239 }; 240 241 } // namespace WebCore 242 243 #endif // FillLayer_h 244