1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2000 Dirk Mueller (mueller (at) kde.org) 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 6 * Copyright (C) 2006 Graham Dennis (graham.dennis (at) 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 blink { 36 37 struct FillSize { 38 FillSize() 39 : type(SizeLength) 40 { 41 } 42 43 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 68 StyleImage* image() const { return m_image.get(); } 69 const Length& xPosition() const { return m_xPosition; } 70 const Length& yPosition() const { return m_yPosition; } 71 BackgroundEdgeOrigin backgroundXOrigin() const { return static_cast<BackgroundEdgeOrigin>(m_backgroundXOrigin); } 72 BackgroundEdgeOrigin backgroundYOrigin() const { return static_cast<BackgroundEdgeOrigin>(m_backgroundYOrigin); } 73 EFillAttachment attachment() const { return static_cast<EFillAttachment>(m_attachment); } 74 EFillBox clip() const { return static_cast<EFillBox>(m_clip); } 75 EFillBox origin() const { return static_cast<EFillBox>(m_origin); } 76 EFillRepeat repeatX() const { return static_cast<EFillRepeat>(m_repeatX); } 77 EFillRepeat repeatY() const { return static_cast<EFillRepeat>(m_repeatY); } 78 CompositeOperator composite() const { return static_cast<CompositeOperator>(m_composite); } 79 WebBlendMode blendMode() const { return static_cast<WebBlendMode>(m_blendMode); } 80 const LengthSize& sizeLength() const { return m_sizeLength; } 81 EFillSizeType sizeType() const { return static_cast<EFillSizeType>(m_sizeType); } 82 FillSize size() const { return FillSize(static_cast<EFillSizeType>(m_sizeType), m_sizeLength); } 83 EMaskSourceType maskSourceType() const { return static_cast<EMaskSourceType>(m_maskSourceType); } 84 85 const FillLayer* next() const { return m_next; } 86 FillLayer* next() { return m_next; } 87 FillLayer* ensureNext() 88 { 89 if (!m_next) 90 m_next = new FillLayer(type()); 91 return m_next; 92 } 93 94 bool isImageSet() const { return m_imageSet; } 95 bool isXPositionSet() const { return m_xPosSet; } 96 bool isYPositionSet() const { return m_yPosSet; } 97 bool isBackgroundXOriginSet() const { return m_backgroundXOriginSet; } 98 bool isBackgroundYOriginSet() const { return m_backgroundYOriginSet; } 99 bool isAttachmentSet() const { return m_attachmentSet; } 100 bool isClipSet() const { return m_clipSet; } 101 bool isOriginSet() const { return m_originSet; } 102 bool isRepeatXSet() const { return m_repeatXSet; } 103 bool isRepeatYSet() const { return m_repeatYSet; } 104 bool isCompositeSet() const { return m_compositeSet; } 105 bool isBlendModeSet() const { return m_blendModeSet; } 106 bool isSizeSet() const { return m_sizeType != SizeNone; } 107 bool isMaskSourceTypeSet() const { return m_maskSourceTypeSet; } 108 109 void setImage(PassRefPtr<StyleImage> i) { m_image = i; m_imageSet = true; } 110 void setXPosition(const Length& position) { m_xPosition = position; m_xPosSet = true; m_backgroundXOriginSet = false; m_backgroundXOrigin = LeftEdge; } 111 void setYPosition(const Length& position) { m_yPosition = position; m_yPosSet = true; m_backgroundYOriginSet = false; m_backgroundYOrigin = TopEdge; } 112 void setBackgroundXOrigin(BackgroundEdgeOrigin origin) { m_backgroundXOrigin = origin; m_backgroundXOriginSet = true; } 113 void setBackgroundYOrigin(BackgroundEdgeOrigin origin) { m_backgroundYOrigin = origin; m_backgroundYOriginSet = true; } 114 void setAttachment(EFillAttachment attachment) { m_attachment = attachment; m_attachmentSet = true; } 115 void setClip(EFillBox b) { m_clip = b; m_clipSet = true; } 116 void setOrigin(EFillBox b) { m_origin = b; m_originSet = true; } 117 void setRepeatX(EFillRepeat r) { m_repeatX = r; m_repeatXSet = true; } 118 void setRepeatY(EFillRepeat r) { m_repeatY = r; m_repeatYSet = true; } 119 void setComposite(CompositeOperator c) { m_composite = c; m_compositeSet = true; } 120 void setBlendMode(WebBlendMode b) { m_blendMode = b; m_blendModeSet = true; } 121 void setSizeType(EFillSizeType b) { m_sizeType = b; } 122 void setSizeLength(const LengthSize& l) { m_sizeLength = l; } 123 void setSize(FillSize f) { m_sizeType = f.type; m_sizeLength = f.size; } 124 void setMaskSourceType(EMaskSourceType m) { m_maskSourceType = m; m_maskSourceTypeSet = true; } 125 126 void clearImage() { m_image.clear(); m_imageSet = false; } 127 void clearXPosition() 128 { 129 m_xPosSet = false; 130 m_backgroundXOriginSet = false; 131 } 132 void clearYPosition() 133 { 134 m_yPosSet = false; 135 m_backgroundYOriginSet = false; 136 } 137 138 void clearAttachment() { m_attachmentSet = false; } 139 void clearClip() { m_clipSet = false; } 140 void clearOrigin() { m_originSet = false; } 141 void clearRepeatX() { m_repeatXSet = false; } 142 void clearRepeatY() { m_repeatYSet = false; } 143 void clearComposite() { m_compositeSet = false; } 144 void clearBlendMode() { m_blendModeSet = false; } 145 void clearSize() { m_sizeType = SizeNone; } 146 void clearMaskSourceType() { m_maskSourceTypeSet = false; } 147 148 FillLayer& operator=(const FillLayer& o); 149 FillLayer(const FillLayer& o); 150 151 bool operator==(const FillLayer& o) const; 152 bool operator!=(const FillLayer& o) const 153 { 154 return !(*this == o); 155 } 156 157 bool containsImage(StyleImage*) const; 158 bool imagesAreLoaded() const; 159 160 bool hasImage() const 161 { 162 if (m_image) 163 return true; 164 return m_next ? m_next->hasImage() : false; 165 } 166 167 bool hasFixedImage() const 168 { 169 if (m_image && m_attachment == FixedBackgroundAttachment) 170 return true; 171 return m_next ? m_next->hasFixedImage() : false; 172 } 173 174 bool hasOpaqueImage(const RenderObject*) const; 175 bool hasRepeatXY() const; 176 bool clipOccludesNextLayers(bool firstLayer) const; 177 178 EFillLayerType type() const { return static_cast<EFillLayerType>(m_type); } 179 180 void fillUnsetProperties(); 181 void cullEmptyLayers(); 182 183 static EFillAttachment initialFillAttachment(EFillLayerType) { return ScrollBackgroundAttachment; } 184 static EFillBox initialFillClip(EFillLayerType) { return BorderFillBox; } 185 static EFillBox initialFillOrigin(EFillLayerType type) { return type == BackgroundFillLayer ? PaddingFillBox : BorderFillBox; } 186 static EFillRepeat initialFillRepeatX(EFillLayerType) { return RepeatFill; } 187 static EFillRepeat initialFillRepeatY(EFillLayerType) { return RepeatFill; } 188 static CompositeOperator initialFillComposite(EFillLayerType) { return CompositeSourceOver; } 189 static WebBlendMode initialFillBlendMode(EFillLayerType) { return WebBlendModeNormal; } 190 static EFillSizeType initialFillSizeType(EFillLayerType) { return SizeLength; } 191 static LengthSize initialFillSizeLength(EFillLayerType) { return LengthSize(); } 192 static FillSize initialFillSize(EFillLayerType type) { return FillSize(initialFillSizeType(type), initialFillSizeLength(type)); } 193 static Length initialFillXPosition(EFillLayerType) { return Length(0.0, Percent); } 194 static Length initialFillYPosition(EFillLayerType) { return Length(0.0, Percent); } 195 static StyleImage* initialFillImage(EFillLayerType) { return 0; } 196 static EMaskSourceType initialFillMaskSourceType(EFillLayerType) { return MaskAlpha; } 197 198 private: 199 friend class RenderStyle; 200 201 void computeClipMax() const; 202 203 FillLayer() { } 204 205 FillLayer* m_next; 206 207 RefPtr<StyleImage> m_image; 208 209 Length m_xPosition; 210 Length m_yPosition; 211 212 LengthSize m_sizeLength; 213 214 unsigned m_attachment : 2; // EFillAttachment 215 unsigned m_clip : 2; // EFillBox 216 unsigned m_origin : 2; // EFillBox 217 unsigned m_repeatX : 3; // EFillRepeat 218 unsigned m_repeatY : 3; // EFillRepeat 219 unsigned m_composite : 4; // CompositeOperator 220 unsigned m_sizeType : 2; // EFillSizeType 221 unsigned m_blendMode : 5; // WebBlendMode 222 unsigned m_maskSourceType : 1; // EMaskSourceType 223 unsigned m_backgroundXOrigin : 2; // BackgroundEdgeOrigin 224 unsigned m_backgroundYOrigin : 2; // BackgroundEdgeOrigin 225 226 unsigned m_imageSet : 1; 227 unsigned m_attachmentSet : 1; 228 unsigned m_clipSet : 1; 229 unsigned m_originSet : 1; 230 unsigned m_repeatXSet : 1; 231 unsigned m_repeatYSet : 1; 232 unsigned m_xPosSet : 1; 233 unsigned m_yPosSet : 1; 234 unsigned m_backgroundXOriginSet : 1; 235 unsigned m_backgroundYOriginSet : 1; 236 unsigned m_compositeSet : 1; 237 unsigned m_blendModeSet : 1; 238 unsigned m_maskSourceTypeSet : 1; 239 240 unsigned m_type : 1; // EFillLayerType 241 242 mutable unsigned m_clipMax : 2; // EFillBox, maximum m_clip value from this to bottom layer 243 }; 244 245 } // namespace blink 246 247 #endif // FillLayer_h 248
