1 /*

     2     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>

     3                   2004, 2005 Rob Buis <buis@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 #if ENABLE(SVG)

    27 #include "CSSValueList.h"

    28 #include "DataRef.h"

    29 #include "GraphicsTypes.h"

    30 #include "Path.h"

    31 #include "RenderStyleConstants.h"

    32 #include "SVGPaint.h"

    33 #include "SVGRenderStyleDefs.h"

    34 

    35 namespace WebCore {

    36 

    37 class FloatRect;

    38 class IntRect;

    39 class RenderObject;

    40 

    41 class SVGRenderStyle : public RefCounted<SVGRenderStyle> {    

    42 public:

    43     static PassRefPtr<SVGRenderStyle> create() { return adoptRef(new SVGRenderStyle); }

    44     PassRefPtr<SVGRenderStyle> copy() const { return adoptRef(new SVGRenderStyle(*this));}

    45     ~SVGRenderStyle();

    46 

    47     bool inheritedNotEqual(const SVGRenderStyle*) const;

    48     void inheritFrom(const SVGRenderStyle*);

    49 

    50     // FIXME: These functions should move to ShadowData.

    51     void inflateForShadow(IntRect&) const;

    52     void inflateForShadow(FloatRect&) const;

    53 

    54     StyleDifference diff(const SVGRenderStyle*) const;

    55 

    56     bool operator==(const SVGRenderStyle&) const;

    57     bool operator!=(const SVGRenderStyle& o) const { return !(*this == o); }

    58 

    59     // SVG CSS Properties

    60     SVG_RS_DEFINE_ATTRIBUTE(EAlignmentBaseline, AlignmentBaseline, alignmentBaseline, AB_AUTO)

    61     SVG_RS_DEFINE_ATTRIBUTE(EDominantBaseline, DominantBaseline, dominantBaseline, DB_AUTO)

    62     SVG_RS_DEFINE_ATTRIBUTE(EBaselineShift, BaselineShift, baselineShift, BS_BASELINE)

    63     SVG_RS_DEFINE_ATTRIBUTE(EVectorEffect, VectorEffect, vectorEffect, VE_NONE)

    64 

    65     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(LineCap, CapStyle, capStyle, ButtCap)

    66     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(WindRule, ClipRule, clipRule, RULE_NONZERO)

    67     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EColorInterpolation, ColorInterpolation, colorInterpolation, CI_SRGB)

    68     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EColorInterpolation, ColorInterpolationFilters, colorInterpolationFilters, CI_LINEARRGB)

    69     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EColorRendering, ColorRendering, colorRendering, CR_AUTO)

    70     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(WindRule, FillRule, fillRule, RULE_NONZERO)

    71     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EImageRendering, ImageRendering, imageRendering, IR_AUTO)

    72     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(LineJoin, JoinStyle, joinStyle, MiterJoin)

    73     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EShapeRendering, ShapeRendering, shapeRendering, SR_AUTO)

    74     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(ETextAnchor, TextAnchor, textAnchor, TA_START)

    75     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EWritingMode, WritingMode, writingMode, WM_LRTB)

    76     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EGlyphOrientation, GlyphOrientationHorizontal, glyphOrientationHorizontal, GO_0DEG)

    77     SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EGlyphOrientation, GlyphOrientationVertical, glyphOrientationVertical, GO_AUTO)

    78 

    79     // SVG CSS Properties (using DataRef's)

    80     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, fill, opacity, FillOpacity, fillOpacity, 1.0f)

    81     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(SVGPaint, fill, paint, FillPaint, fillPaint, SVGPaint::defaultFill())

    82 

    83     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, stroke, opacity, StrokeOpacity, strokeOpacity, 1.0f)

    84     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(SVGPaint, stroke, paint, StrokePaint, strokePaint, SVGPaint::defaultStroke())

    85     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValueList, stroke, dashArray, StrokeDashArray, strokeDashArray, 0)

    86     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, stroke, miterLimit, StrokeMiterLimit, strokeMiterLimit, 4.0f)

    87     

    88     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValue, stroke, width, StrokeWidth, strokeWidth, 0)

    89     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValue, stroke, dashOffset, StrokeDashOffset, strokeDashOffset, 0);

    90 

    91     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValue, text, kerning, Kerning, kerning, 0)

    92 

    93     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, stops, opacity, StopOpacity, stopOpacity, 1.0f)

    94     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(Color, stops, color, StopColor, stopColor, Color(0, 0, 0))    

    95 

    96     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, misc, floodOpacity, FloodOpacity, floodOpacity, 1.0f)

    97     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(Color, misc, floodColor, FloodColor, floodColor, Color(0, 0, 0))

    98     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(Color, misc, lightingColor, LightingColor, lightingColor, Color(255, 255, 255))

    99     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValue, misc, baselineShiftValue, BaselineShiftValue, baselineShiftValue, 0)

   100 

   101     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_OWNPTR(ShadowData, shadowSVG, shadow, Shadow, shadow, 0)

   102 

   103     // Non-inherited resources

   104     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, resources, clipper, ClipperResource, clipperResource, String())

   105     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, resources, filter, FilterResource, filterResource, String())

   106     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, resources, masker, MaskerResource, maskerResource, String())

   107 

   108     // Inherited resources

   109     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, inheritedResources, markerStart, MarkerStartResource, markerStartResource, String())

   110     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, inheritedResources, markerMid, MarkerMidResource, markerMidResource, String())

   111     SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, inheritedResources, markerEnd, MarkerEndResource, markerEndResource, String())

   112 

   113     // convenience

   114     bool hasClipper() const { return !clipperResource().isEmpty(); }

   115     bool hasMasker() const { return !maskerResource().isEmpty(); }

   116     bool hasFilter() const { return !filterResource().isEmpty(); }

   117     bool hasMarkers() const { return !markerStartResource().isEmpty() || !markerMidResource().isEmpty() || !markerEndResource().isEmpty(); }

   118     bool hasStroke() const { return strokePaint()->paintType() != SVGPaint::SVG_PAINTTYPE_NONE; }

   119     bool hasFill() const { return fillPaint()->paintType() != SVGPaint::SVG_PAINTTYPE_NONE; }

   120 

   121     static float cssPrimitiveToLength(const RenderObject*, CSSValue*, float defaultValue = 0.0f);

   122 

   123 protected:

   124     // inherit

   125     struct InheritedFlags {

   126         bool operator==(const InheritedFlags& other) const

   127         {

   128             return (_colorRendering == other._colorRendering)

   129                 && (_imageRendering == other._imageRendering)

   130                 && (_shapeRendering == other._shapeRendering)

   131                 && (_clipRule == other._clipRule)

   132                 && (_fillRule == other._fillRule)

   133                 && (_capStyle == other._capStyle)

   134                 && (_joinStyle == other._joinStyle)

   135                 && (_textAnchor == other._textAnchor)

   136                 && (_colorInterpolation == other._colorInterpolation)

   137                 && (_colorInterpolationFilters == other._colorInterpolationFilters)

   138                 && (_writingMode == other._writingMode)

   139                 && (_glyphOrientationHorizontal == other._glyphOrientationHorizontal)

   140                 && (_glyphOrientationVertical == other._glyphOrientationVertical);

   141         }

   142 

   143         bool operator!=(const InheritedFlags& other) const

   144         {

   145             return !(*this == other);

   146         }

   147 

   148         unsigned _colorRendering : 2; // EColorRendering

   149         unsigned _imageRendering : 2; // EImageRendering 

   150         unsigned _shapeRendering : 2; // EShapeRendering 

   151         unsigned _clipRule : 1; // WindRule

   152         unsigned _fillRule : 1; // WindRule

   153         unsigned _capStyle : 2; // LineCap

   154         unsigned _joinStyle : 2; // LineJoin

   155         unsigned _textAnchor : 2; // ETextAnchor

   156         unsigned _colorInterpolation : 2; // EColorInterpolation

   157         unsigned _colorInterpolationFilters : 2; // EColorInterpolation

   158         unsigned _writingMode : 3; // EWritingMode

   159         unsigned _glyphOrientationHorizontal : 3; // EGlyphOrientation

   160         unsigned _glyphOrientationVertical : 3; // EGlyphOrientation

   161     } svg_inherited_flags;

   162 

   163     // don't inherit

   164     struct NonInheritedFlags {

   165         // 32 bit non-inherited, don't add to the struct, or the operator will break.

   166         bool operator==(const NonInheritedFlags &other) const { return _niflags == other._niflags; }

   167         bool operator!=(const NonInheritedFlags &other) const { return _niflags != other._niflags; }

   168 

   169         union {

   170             struct {

   171                 unsigned _alignmentBaseline : 4; // EAlignmentBaseline 

   172                 unsigned _dominantBaseline : 4; // EDominantBaseline

   173                 unsigned _baselineShift : 2; // EBaselineShift

   174                 unsigned _vectorEffect: 1; // EVectorEffect

   175                 // 21 bits unused

   176             } f;

   177             uint32_t _niflags;

   178         };

   179     } svg_noninherited_flags;

   180 

   181     // inherited attributes

   182     DataRef<StyleFillData> fill;

   183     DataRef<StyleStrokeData> stroke;

   184     DataRef<StyleTextData> text;

   185     DataRef<StyleInheritedResourceData> inheritedResources;

   186 

   187     // non-inherited attributes

   188     DataRef<StyleStopData> stops;

   189     DataRef<StyleMiscData> misc;

   190     DataRef<StyleShadowSVGData> shadowSVG;

   191     DataRef<StyleResourceData> resources;

   192 

   193 private:

   194     enum CreateDefaultType { CreateDefault };

   195         

   196     SVGRenderStyle();

   197     SVGRenderStyle(const SVGRenderStyle&);

   198     SVGRenderStyle(CreateDefaultType); // Used to create the default style.

   199 

   200     void setBitDefaults()

   201     {

   202         svg_inherited_flags._clipRule = initialClipRule();

   203         svg_inherited_flags._colorRendering = initialColorRendering();

   204         svg_inherited_flags._fillRule = initialFillRule();

   205         svg_inherited_flags._imageRendering = initialImageRendering();

   206         svg_inherited_flags._shapeRendering = initialShapeRendering();

   207         svg_inherited_flags._textAnchor = initialTextAnchor();

   208         svg_inherited_flags._capStyle = initialCapStyle();

   209         svg_inherited_flags._joinStyle = initialJoinStyle();

   210         svg_inherited_flags._colorInterpolation = initialColorInterpolation();

   211         svg_inherited_flags._colorInterpolationFilters = initialColorInterpolationFilters();

   212         svg_inherited_flags._writingMode = initialWritingMode();

   213         svg_inherited_flags._glyphOrientationHorizontal = initialGlyphOrientationHorizontal();

   214         svg_inherited_flags._glyphOrientationVertical = initialGlyphOrientationVertical();

   215 

   216         svg_noninherited_flags._niflags = 0;

   217         svg_noninherited_flags.f._alignmentBaseline = initialAlignmentBaseline();

   218         svg_noninherited_flags.f._dominantBaseline = initialDominantBaseline();

   219         svg_noninherited_flags.f._baselineShift = initialBaselineShift();

   220         svg_noninherited_flags.f._vectorEffect = initialVectorEffect();

   221     }

   222 };

   223 

   224 } // namespace WebCore

   225 

   226 #endif // ENABLE(SVG)

   227 #endif // SVGRenderStyle_h