1 /* 2 Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org> 3 2004, 2005 Rob Buis <buis (at) kde.org> 4 Copyright (C) 2005, 2006 Apple Computer, Inc. 5 Copyright (C) Research In Motion Limited 2010. All rights reserved. 6 7 This library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Library General Public 9 License as published by the Free Software Foundation; either 10 version 2 of the License, or (at your option) any later version. 11 12 This library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Library General Public License for more details. 16 17 You should have received a copy of the GNU Library General Public License 18 along with this library; see the file COPYING.LIB. If not, write to 19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. 21 */ 22 23 #ifndef SVGRenderStyle_h 24 #define SVGRenderStyle_h 25 26 #include "bindings/core/v8/ExceptionStatePlaceholder.h" 27 #include "core/css/CSSValueList.h" 28 #include "core/rendering/style/DataRef.h" 29 #include "core/rendering/style/RenderStyleConstants.h" 30 #include "core/rendering/style/SVGRenderStyleDefs.h" 31 #include "core/rendering/style/StyleDifference.h" 32 #include "platform/graphics/GraphicsTypes.h" 33 #include "platform/graphics/Path.h" 34 35 namespace blink { 36 37 class SVGRenderStyle : public RefCounted<SVGRenderStyle> { 38 public: 39 static PassRefPtr<SVGRenderStyle> create() { return adoptRef(new SVGRenderStyle); } 40 PassRefPtr<SVGRenderStyle> copy() const { return adoptRef(new SVGRenderStyle(*this));} 41 ~SVGRenderStyle(); 42 43 bool inheritedNotEqual(const SVGRenderStyle*) const; 44 void inheritFrom(const SVGRenderStyle*); 45 void copyNonInheritedFrom(const SVGRenderStyle*); 46 47 StyleDifference diff(const SVGRenderStyle*) const; 48 49 bool operator==(const SVGRenderStyle&) const; 50 bool operator!=(const SVGRenderStyle& o) const { return !(*this == o); } 51 52 // Initial values for all the properties 53 static EAlignmentBaseline initialAlignmentBaseline() { return AB_AUTO; } 54 static EDominantBaseline initialDominantBaseline() { return DB_AUTO; } 55 static EBaselineShift initialBaselineShift() { return BS_BASELINE; } 56 static EVectorEffect initialVectorEffect() { return VE_NONE; } 57 static EBufferedRendering initialBufferedRendering() { return BR_AUTO; } 58 static LineCap initialCapStyle() { return ButtCap; } 59 static WindRule initialClipRule() { return RULE_NONZERO; } 60 static EColorInterpolation initialColorInterpolation() { return CI_SRGB; } 61 static EColorInterpolation initialColorInterpolationFilters() { return CI_LINEARRGB; } 62 static EColorRendering initialColorRendering() { return CR_AUTO; } 63 static WindRule initialFillRule() { return RULE_NONZERO; } 64 static LineJoin initialJoinStyle() { return MiterJoin; } 65 static EShapeRendering initialShapeRendering() { return SR_AUTO; } 66 static ETextAnchor initialTextAnchor() { return TA_START; } 67 static SVGWritingMode initialWritingMode() { return WM_LRTB; } 68 static EGlyphOrientation initialGlyphOrientationHorizontal() { return GO_0DEG; } 69 static EGlyphOrientation initialGlyphOrientationVertical() { return GO_AUTO; } 70 static float initialFillOpacity() { return 1; } 71 static SVGPaintType initialFillPaintType() { return SVG_PAINTTYPE_RGBCOLOR; } 72 static Color initialFillPaintColor() { return Color::black; } 73 static String initialFillPaintUri() { return String(); } 74 static float initialStrokeOpacity() { return 1; } 75 static SVGPaintType initialStrokePaintType() { return SVG_PAINTTYPE_NONE; } 76 static Color initialStrokePaintColor() { return Color(); } 77 static String initialStrokePaintUri() { return String(); } 78 static PassRefPtr<SVGLengthList> initialStrokeDashArray() { return SVGLengthList::create(); } 79 static float initialStrokeMiterLimit() { return 4; } 80 static float initialStopOpacity() { return 1; } 81 static Color initialStopColor() { return Color(0, 0, 0); } 82 static float initialFloodOpacity() { return 1; } 83 static Color initialFloodColor() { return Color(0, 0, 0); } 84 static Color initialLightingColor() { return Color(255, 255, 255); } 85 static const AtomicString& initialClipperResource() { return nullAtom; } 86 static const AtomicString& initialFilterResource() { return nullAtom; } 87 static const AtomicString& initialMaskerResource() { return nullAtom; } 88 static const AtomicString& initialMarkerStartResource() { return nullAtom; } 89 static const AtomicString& initialMarkerMidResource() { return nullAtom; } 90 static const AtomicString& initialMarkerEndResource() { return nullAtom; } 91 static EMaskType initialMaskType() { return MT_LUMINANCE; } 92 static EPaintOrder initialPaintOrder() { return PO_NORMAL; } 93 94 static PassRefPtr<SVGLength> initialBaselineShiftValue() 95 { 96 RefPtr<SVGLength> length = SVGLength::create(); 97 length->newValueSpecifiedUnits(LengthTypeNumber, 0); 98 return length.release(); 99 } 100 101 static PassRefPtr<SVGLength> initialStrokeDashOffset() 102 { 103 RefPtr<SVGLength> length = SVGLength::create(); 104 length->newValueSpecifiedUnits(LengthTypeNumber, 0); 105 return length.release(); 106 } 107 108 static PassRefPtr<SVGLength> initialStrokeWidth() 109 { 110 RefPtr<SVGLength> length = SVGLength::create(); 111 length->newValueSpecifiedUnits(LengthTypeNumber, 1); 112 return length.release(); 113 } 114 115 // SVG CSS Property setters 116 void setAlignmentBaseline(EAlignmentBaseline val) { svg_noninherited_flags.f._alignmentBaseline = val; } 117 void setDominantBaseline(EDominantBaseline val) { svg_noninherited_flags.f._dominantBaseline = val; } 118 void setBaselineShift(EBaselineShift val) { svg_noninherited_flags.f._baselineShift = val; } 119 void setVectorEffect(EVectorEffect val) { svg_noninherited_flags.f._vectorEffect = val; } 120 void setBufferedRendering(EBufferedRendering val) { svg_noninherited_flags.f.bufferedRendering = val; } 121 void setCapStyle(LineCap val) { svg_inherited_flags._capStyle = val; } 122 void setClipRule(WindRule val) { svg_inherited_flags._clipRule = val; } 123 void setColorInterpolation(EColorInterpolation val) { svg_inherited_flags._colorInterpolation = val; } 124 void setColorInterpolationFilters(EColorInterpolation val) { svg_inherited_flags._colorInterpolationFilters = val; } 125 void setColorRendering(EColorRendering val) { svg_inherited_flags._colorRendering = val; } 126 void setFillRule(WindRule val) { svg_inherited_flags._fillRule = val; } 127 void setJoinStyle(LineJoin val) { svg_inherited_flags._joinStyle = val; } 128 void setShapeRendering(EShapeRendering val) { svg_inherited_flags._shapeRendering = val; } 129 void setTextAnchor(ETextAnchor val) { svg_inherited_flags._textAnchor = val; } 130 void setWritingMode(SVGWritingMode val) { svg_inherited_flags._writingMode = val; } 131 void setGlyphOrientationHorizontal(EGlyphOrientation val) { svg_inherited_flags._glyphOrientationHorizontal = val; } 132 void setGlyphOrientationVertical(EGlyphOrientation val) { svg_inherited_flags._glyphOrientationVertical = val; } 133 void setMaskType(EMaskType val) { svg_noninherited_flags.f.maskType = val; } 134 void setPaintOrder(EPaintOrder val) { svg_inherited_flags._paintOrder = (int)val; } 135 136 void setFillOpacity(float obj) 137 { 138 if (!(fill->opacity == obj)) 139 fill.access()->opacity = obj; 140 } 141 142 void setFillPaint(SVGPaintType type, const Color& color, const String& uri, bool applyToRegularStyle = true, bool applyToVisitedLinkStyle = false) 143 { 144 if (applyToRegularStyle) { 145 if (!(fill->paintType == type)) 146 fill.access()->paintType = type; 147 if (!(fill->paintColor == color)) 148 fill.access()->paintColor = color; 149 if (!(fill->paintUri == uri)) 150 fill.access()->paintUri = uri; 151 } 152 if (applyToVisitedLinkStyle) { 153 if (!(fill->visitedLinkPaintType == type)) 154 fill.access()->visitedLinkPaintType = type; 155 if (!(fill->visitedLinkPaintColor == color)) 156 fill.access()->visitedLinkPaintColor = color; 157 if (!(fill->visitedLinkPaintUri == uri)) 158 fill.access()->visitedLinkPaintUri = uri; 159 } 160 } 161 162 void setStrokeOpacity(float obj) 163 { 164 if (!(stroke->opacity == obj)) 165 stroke.access()->opacity = obj; 166 } 167 168 void setStrokePaint(SVGPaintType type, const Color& color, const String& uri, bool applyToRegularStyle = true, bool applyToVisitedLinkStyle = false) 169 { 170 if (applyToRegularStyle) { 171 if (!(stroke->paintType == type)) 172 stroke.access()->paintType = type; 173 if (!(stroke->paintColor == color)) 174 stroke.access()->paintColor = color; 175 if (!(stroke->paintUri == uri)) 176 stroke.access()->paintUri = uri; 177 } 178 if (applyToVisitedLinkStyle) { 179 if (!(stroke->visitedLinkPaintType == type)) 180 stroke.access()->visitedLinkPaintType = type; 181 if (!(stroke->visitedLinkPaintColor == color)) 182 stroke.access()->visitedLinkPaintColor = color; 183 if (!(stroke->visitedLinkPaintUri == uri)) 184 stroke.access()->visitedLinkPaintUri = uri; 185 } 186 } 187 188 void setStrokeDashArray(PassRefPtr<SVGLengthList> obj) 189 { 190 if (!(stroke->dashArray == obj)) 191 stroke.access()->dashArray = obj; 192 } 193 194 void setStrokeMiterLimit(float obj) 195 { 196 if (!(stroke->miterLimit == obj)) 197 stroke.access()->miterLimit = obj; 198 } 199 200 void setStrokeWidth(PassRefPtr<SVGLength> obj) 201 { 202 if (!(stroke->width == obj)) 203 stroke.access()->width = obj; 204 } 205 206 void setStrokeDashOffset(PassRefPtr<SVGLength> obj) 207 { 208 if (!(stroke->dashOffset == obj)) 209 stroke.access()->dashOffset = obj; 210 } 211 212 void setStopOpacity(float obj) 213 { 214 if (!(stops->opacity == obj)) 215 stops.access()->opacity = obj; 216 } 217 218 void setStopColor(const Color& obj) 219 { 220 if (!(stops->color == obj)) 221 stops.access()->color = obj; 222 } 223 224 void setFloodOpacity(float obj) 225 { 226 if (!(misc->floodOpacity == obj)) 227 misc.access()->floodOpacity = obj; 228 } 229 230 void setFloodColor(const Color& obj) 231 { 232 if (!(misc->floodColor == obj)) 233 misc.access()->floodColor = obj; 234 } 235 236 void setLightingColor(const Color& obj) 237 { 238 if (!(misc->lightingColor == obj)) 239 misc.access()->lightingColor = obj; 240 } 241 242 void setBaselineShiftValue(PassRefPtr<SVGLength> obj) 243 { 244 if (!(misc->baselineShiftValue == obj)) 245 misc.access()->baselineShiftValue = obj; 246 } 247 248 // Setters for non-inherited resources 249 void setClipperResource(const AtomicString& obj) 250 { 251 if (!(resources->clipper == obj)) 252 resources.access()->clipper = obj; 253 } 254 255 void setFilterResource(const AtomicString& obj) 256 { 257 if (!(resources->filter == obj)) 258 resources.access()->filter = obj; 259 } 260 261 void setMaskerResource(const AtomicString& obj) 262 { 263 if (!(resources->masker == obj)) 264 resources.access()->masker = obj; 265 } 266 267 // Setters for inherited resources 268 void setMarkerStartResource(const AtomicString& obj) 269 { 270 if (!(inheritedResources->markerStart == obj)) 271 inheritedResources.access()->markerStart = obj; 272 } 273 274 void setMarkerMidResource(const AtomicString& obj) 275 { 276 if (!(inheritedResources->markerMid == obj)) 277 inheritedResources.access()->markerMid = obj; 278 } 279 280 void setMarkerEndResource(const AtomicString& obj) 281 { 282 if (!(inheritedResources->markerEnd == obj)) 283 inheritedResources.access()->markerEnd = obj; 284 } 285 286 // Read accessors for all the properties 287 EAlignmentBaseline alignmentBaseline() const { return (EAlignmentBaseline) svg_noninherited_flags.f._alignmentBaseline; } 288 EDominantBaseline dominantBaseline() const { return (EDominantBaseline) svg_noninherited_flags.f._dominantBaseline; } 289 EBaselineShift baselineShift() const { return (EBaselineShift) svg_noninherited_flags.f._baselineShift; } 290 EVectorEffect vectorEffect() const { return (EVectorEffect) svg_noninherited_flags.f._vectorEffect; } 291 EBufferedRendering bufferedRendering() const { return (EBufferedRendering) svg_noninherited_flags.f.bufferedRendering; } 292 LineCap capStyle() const { return (LineCap) svg_inherited_flags._capStyle; } 293 WindRule clipRule() const { return (WindRule) svg_inherited_flags._clipRule; } 294 EColorInterpolation colorInterpolation() const { return (EColorInterpolation) svg_inherited_flags._colorInterpolation; } 295 EColorInterpolation colorInterpolationFilters() const { return (EColorInterpolation) svg_inherited_flags._colorInterpolationFilters; } 296 EColorRendering colorRendering() const { return (EColorRendering) svg_inherited_flags._colorRendering; } 297 WindRule fillRule() const { return (WindRule) svg_inherited_flags._fillRule; } 298 LineJoin joinStyle() const { return (LineJoin) svg_inherited_flags._joinStyle; } 299 EShapeRendering shapeRendering() const { return (EShapeRendering) svg_inherited_flags._shapeRendering; } 300 ETextAnchor textAnchor() const { return (ETextAnchor) svg_inherited_flags._textAnchor; } 301 SVGWritingMode writingMode() const { return (SVGWritingMode) svg_inherited_flags._writingMode; } 302 EGlyphOrientation glyphOrientationHorizontal() const { return (EGlyphOrientation) svg_inherited_flags._glyphOrientationHorizontal; } 303 EGlyphOrientation glyphOrientationVertical() const { return (EGlyphOrientation) svg_inherited_flags._glyphOrientationVertical; } 304 float fillOpacity() const { return fill->opacity; } 305 const SVGPaintType& fillPaintType() const { return fill->paintType; } 306 const Color& fillPaintColor() const { return fill->paintColor; } 307 const String& fillPaintUri() const { return fill->paintUri; } 308 float strokeOpacity() const { return stroke->opacity; } 309 const SVGPaintType& strokePaintType() const { return stroke->paintType; } 310 const Color& strokePaintColor() const { return stroke->paintColor; } 311 const String& strokePaintUri() const { return stroke->paintUri; } 312 SVGLengthList* strokeDashArray() const { return stroke->dashArray.get(); } 313 float strokeMiterLimit() const { return stroke->miterLimit; } 314 SVGLength* strokeWidth() const { return stroke->width.get(); } 315 SVGLength* strokeDashOffset() const { return stroke->dashOffset.get(); } 316 float stopOpacity() const { return stops->opacity; } 317 const Color& stopColor() const { return stops->color; } 318 float floodOpacity() const { return misc->floodOpacity; } 319 const Color& floodColor() const { return misc->floodColor; } 320 const Color& lightingColor() const { return misc->lightingColor; } 321 SVGLength* baselineShiftValue() const { return misc->baselineShiftValue.get(); } 322 const AtomicString& clipperResource() const { return resources->clipper; } 323 const AtomicString& filterResource() const { return resources->filter; } 324 const AtomicString& maskerResource() const { return resources->masker; } 325 const AtomicString& markerStartResource() const { return inheritedResources->markerStart; } 326 const AtomicString& markerMidResource() const { return inheritedResources->markerMid; } 327 const AtomicString& markerEndResource() const { return inheritedResources->markerEnd; } 328 EMaskType maskType() const { return (EMaskType) svg_noninherited_flags.f.maskType; } 329 EPaintOrder paintOrder() const { return (EPaintOrder) svg_inherited_flags._paintOrder; } 330 EPaintOrderType paintOrderType(unsigned index) const; 331 332 const SVGPaintType& visitedLinkFillPaintType() const { return fill->visitedLinkPaintType; } 333 const Color& visitedLinkFillPaintColor() const { return fill->visitedLinkPaintColor; } 334 const String& visitedLinkFillPaintUri() const { return fill->visitedLinkPaintUri; } 335 const SVGPaintType& visitedLinkStrokePaintType() const { return stroke->visitedLinkPaintType; } 336 const Color& visitedLinkStrokePaintColor() const { return stroke->visitedLinkPaintColor; } 337 const String& visitedLinkStrokePaintUri() const { return stroke->visitedLinkPaintUri; } 338 339 // convenience 340 bool hasClipper() const { return !clipperResource().isEmpty(); } 341 bool hasMasker() const { return !maskerResource().isEmpty(); } 342 bool hasFilter() const { return !filterResource().isEmpty(); } 343 bool hasMarkers() const { return !markerStartResource().isEmpty() || !markerMidResource().isEmpty() || !markerEndResource().isEmpty(); } 344 bool hasStroke() const { return strokePaintType() != SVG_PAINTTYPE_NONE; } 345 bool hasVisibleStroke() const { return hasStroke() && !strokeWidth()->isZero(); } 346 bool hasFill() const { return fillPaintType() != SVG_PAINTTYPE_NONE; } 347 bool isVerticalWritingMode() const { return writingMode() == WM_TBRL || writingMode() == WM_TB; } 348 349 protected: 350 // inherit 351 struct InheritedFlags { 352 bool operator==(const InheritedFlags& other) const 353 { 354 return (_colorRendering == other._colorRendering) 355 && (_shapeRendering == other._shapeRendering) 356 && (_clipRule == other._clipRule) 357 && (_fillRule == other._fillRule) 358 && (_capStyle == other._capStyle) 359 && (_joinStyle == other._joinStyle) 360 && (_textAnchor == other._textAnchor) 361 && (_colorInterpolation == other._colorInterpolation) 362 && (_colorInterpolationFilters == other._colorInterpolationFilters) 363 && (_writingMode == other._writingMode) 364 && (_glyphOrientationHorizontal == other._glyphOrientationHorizontal) 365 && (_glyphOrientationVertical == other._glyphOrientationVertical) 366 && (_paintOrder == other._paintOrder); 367 } 368 369 bool operator!=(const InheritedFlags& other) const 370 { 371 return !(*this == other); 372 } 373 374 unsigned _colorRendering : 2; // EColorRendering 375 unsigned _shapeRendering : 2; // EShapeRendering 376 unsigned _clipRule : 1; // WindRule 377 unsigned _fillRule : 1; // WindRule 378 unsigned _capStyle : 2; // LineCap 379 unsigned _joinStyle : 2; // LineJoin 380 unsigned _textAnchor : 2; // ETextAnchor 381 unsigned _colorInterpolation : 2; // EColorInterpolation 382 unsigned _colorInterpolationFilters : 2; // EColorInterpolation 383 unsigned _writingMode : 3; // SVGWritingMode 384 unsigned _glyphOrientationHorizontal : 3; // EGlyphOrientation 385 unsigned _glyphOrientationVertical : 3; // EGlyphOrientation 386 unsigned _paintOrder : 6; // EPaintOrder 387 } svg_inherited_flags; 388 389 // don't inherit 390 struct NonInheritedFlags { 391 // 32 bit non-inherited, don't add to the struct, or the operator will break. 392 bool operator==(const NonInheritedFlags &other) const { return _niflags == other._niflags; } 393 bool operator!=(const NonInheritedFlags &other) const { return _niflags != other._niflags; } 394 395 union { 396 struct { 397 unsigned _alignmentBaseline : 4; // EAlignmentBaseline 398 unsigned _dominantBaseline : 4; // EDominantBaseline 399 unsigned _baselineShift : 2; // EBaselineShift 400 unsigned _vectorEffect: 1; // EVectorEffect 401 unsigned bufferedRendering: 2; // EBufferedRendering 402 unsigned maskType: 1; // EMaskType 403 // 18 bits unused 404 } f; 405 uint32_t _niflags; 406 }; 407 } svg_noninherited_flags; 408 409 // inherited attributes 410 DataRef<StyleFillData> fill; 411 DataRef<StyleStrokeData> stroke; 412 DataRef<StyleInheritedResourceData> inheritedResources; 413 414 // non-inherited attributes 415 DataRef<StyleStopData> stops; 416 DataRef<StyleMiscData> misc; 417 DataRef<StyleResourceData> resources; 418 419 private: 420 enum CreateDefaultType { CreateDefault }; 421 422 SVGRenderStyle(); 423 SVGRenderStyle(const SVGRenderStyle&); 424 SVGRenderStyle(CreateDefaultType); // Used to create the default style. 425 426 bool diffNeedsLayoutAndPaintInvalidation(const SVGRenderStyle* other) const; 427 bool diffNeedsPaintInvalidation(const SVGRenderStyle* other) const; 428 429 void setBitDefaults() 430 { 431 svg_inherited_flags._clipRule = initialClipRule(); 432 svg_inherited_flags._colorRendering = initialColorRendering(); 433 svg_inherited_flags._fillRule = initialFillRule(); 434 svg_inherited_flags._shapeRendering = initialShapeRendering(); 435 svg_inherited_flags._textAnchor = initialTextAnchor(); 436 svg_inherited_flags._capStyle = initialCapStyle(); 437 svg_inherited_flags._joinStyle = initialJoinStyle(); 438 svg_inherited_flags._colorInterpolation = initialColorInterpolation(); 439 svg_inherited_flags._colorInterpolationFilters = initialColorInterpolationFilters(); 440 svg_inherited_flags._writingMode = initialWritingMode(); 441 svg_inherited_flags._glyphOrientationHorizontal = initialGlyphOrientationHorizontal(); 442 svg_inherited_flags._glyphOrientationVertical = initialGlyphOrientationVertical(); 443 svg_inherited_flags._paintOrder = initialPaintOrder(); 444 445 svg_noninherited_flags._niflags = 0; 446 svg_noninherited_flags.f._alignmentBaseline = initialAlignmentBaseline(); 447 svg_noninherited_flags.f._dominantBaseline = initialDominantBaseline(); 448 svg_noninherited_flags.f._baselineShift = initialBaselineShift(); 449 svg_noninherited_flags.f._vectorEffect = initialVectorEffect(); 450 svg_noninherited_flags.f.bufferedRendering = initialBufferedRendering(); 451 svg_noninherited_flags.f.maskType = initialMaskType(); 452 } 453 }; 454 455 } // namespace blink 456 457 #endif // SVGRenderStyle_h 458
