SVGRenderStyle.h   [plain text]

/*
    Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
                  2004, 2005 Rob Buis <buis@kde.org>
    Copyright (C) 2005, 2006 Apple Computer, Inc.

     This file is part of the KDE project

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef SVGRenderStyle_h
#define SVGRenderStyle_h

#if ENABLE(SVG)

#include "CSSValueList.h"
#include "DataRef.h"
#include "GraphicsTypes.h"
#include "SVGPaint.h"
#include "SVGRenderStyleDefs.h"
#include <wtf/Platform.h>

#if PLATFORM(WIN_OS)
typedef unsigned long long uint64_t;
#endif

namespace WebCore {

    class SVGRenderStyle : public Shared<SVGRenderStyle> {    
    public:
        SVGRenderStyle();
        SVGRenderStyle(bool); // Used to create the default style.
        SVGRenderStyle(const SVGRenderStyle&);
        ~SVGRenderStyle();

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

        // SVG CSS Properties
        SVG_RS_DEFINE_ATTRIBUTE(EAlignmentBaseline, AlignmentBaseline, alignmentBaseline, AB_AUTO)
        SVG_RS_DEFINE_ATTRIBUTE(EDominantBaseline, DominantBaseline, dominantBaseline, DB_AUTO)
        SVG_RS_DEFINE_ATTRIBUTE(EBaselineShift, BaselineShift, baselineShift, BS_BASELINE)

        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(LineCap, CapStyle, capStyle, ButtCap)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(WindRule, ClipRule, clipRule, RULE_NONZERO)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EColorInterpolation, ColorInterpolation, colorInterpolation, CI_SRGB)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EColorInterpolation, ColorInterpolationFilters, colorInterpolationFilters, CI_LINEARRGB)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EColorRendering, ColorRendering, colorRendering, CR_AUTO)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(WindRule, FillRule, fillRule, RULE_NONZERO)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EImageRendering, ImageRendering, imageRendering, IR_AUTO)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(LineJoin, JoinStyle, joinStyle, MiterJoin)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EPointerEvents, PointerEvents, pointerEvents, PE_VISIBLE_PAINTED)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EShapeRendering, ShapeRendering, shapeRendering, SR_AUTO)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(ETextAnchor, TextAnchor, textAnchor, TA_START)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(ETextRendering, TextRendering, textRendering, TR_AUTO)
        SVG_RS_DEFINE_ATTRIBUTE_INHERITED(EWritingMode, WritingMode, writingMode, WM_LRTB)
 
        // SVG CSS Properties (using DataRef's)
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, fill, opacity, FillOpacity, fillOpacity, 1.0f)
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(SVGPaint, fill, paint, FillPaint, fillPaint, SVGPaint::defaultFill())

        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, stroke, opacity, StrokeOpacity, strokeOpacity, 1.0f)
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(SVGPaint, stroke, paint, StrokePaint, strokePaint, SVGPaint::defaultStroke())
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValueList, stroke, dashArray, StrokeDashArray, strokeDashArray, 0)
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, stroke, miterLimit, StrokeMiterLimit, strokeMiterLimit, 4.0f)
        
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValue, stroke, width, StrokeWidth, strokeWidth, 0)
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValue, stroke, dashOffset, StrokeDashOffset, strokeDashOffset, 0);

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

        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, stops, opacity, StopOpacity, stopOpacity, 1.0f)
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(Color, stops, color, StopColor, stopColor, Color(0, 0, 0))    
        
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, clip, clipPath, ClipPath, clipPath, String())
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, mask, maskElement, MaskElement, maskElement, String())
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, markers, startMarker, StartMarker, startMarker, String())
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, markers, midMarker, MidMarker, midMarker, String())
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, markers, endMarker, EndMarker, endMarker, String())

        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(String, misc, filter, Filter, filter, String())
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(float, misc, floodOpacity, FloodOpacity, floodOpacity, 1.0f)
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL(Color, misc, floodColor, FloodColor, floodColor, Color(0, 0, 0))
        SVG_RS_DEFINE_ATTRIBUTE_DATAREF_WITH_INITIAL_REFCOUNTED(CSSValue, misc, baselineShiftValue, BaselineShiftValue, baselineShiftValue, 0)

        // convenience
        bool hasStroke() const { return (strokePaint()->paintType() != SVGPaint::SVG_PAINTTYPE_NONE); }
        bool hasFill() const { return (fillPaint()->paintType() != SVGPaint::SVG_PAINTTYPE_NONE); }

    protected:
        // inherit
        struct InheritedFlags {
            // 64 bit inherited, don't add to the struct, or the operator will break.
            bool operator==(const InheritedFlags &other) const { return _iflags == other._iflags; }
            bool operator!=(const InheritedFlags &other) const { return _iflags != other._iflags; }

            union {
                struct {
                    unsigned _colorRendering : 2; // EColorRendering
                    unsigned _imageRendering : 2; // EImageRendering 
                    unsigned _shapeRendering : 2; // EShapeRendering 
                    unsigned _textRendering : 2; // ETextRendering
                    unsigned _clipRule : 1; // WindRule
                    unsigned _fillRule : 1; // WindRule
                    unsigned _capStyle : 2; // LineCap
                    unsigned _joinStyle : 2; // LineJoin
                    unsigned _textAnchor : 2; // ETextAnchor
                    unsigned _colorInterpolation : 2; // EColorInterpolation
                    unsigned _colorInterpolationFilters : 2; // EColorInterpolation
                    unsigned _pointerEvents : 4; // EPointerEvents
                    unsigned _writingMode : 3; // EWritingMode
                    // 5 bits unused
                } f;
                uint32_t _iflags;
            };
        } svg_inherited_flags;

        // don't inherit
        struct NonInheritedFlags {
            // 64 bit non-inherited, don't add to the struct, or the operator will break.
            bool operator==(const NonInheritedFlags &other) const { return _niflags == other._niflags; }
            bool operator!=(const NonInheritedFlags &other) const { return _niflags != other._niflags; }

            union {
                struct {
                    unsigned _alignmentBaseline : 4; // EAlignmentBaseline 
                    unsigned _dominantBaseline : 4; // EDominantBaseline
                    unsigned _baselineShift : 2; // EBaselineShift
                    // 22 bits unused
                } f;
                uint32_t _niflags;
            };
        } svg_noninherited_flags;

        // inherited attributes
        DataRef<StyleFillData> fill;
        DataRef<StyleStrokeData> stroke;
        DataRef<StyleMarkerData> markers;
        DataRef<StyleTextData> text;

        // non-inherited attributes
        DataRef<StyleStopData> stops;
        DataRef<StyleClipData> clip;
        DataRef<StyleMaskData> mask;
        DataRef<StyleMiscData> misc;

        // static default style
        static SVGRenderStyle *s_defaultStyle;

    private:
        SVGRenderStyle(const SVGRenderStyle*) { }

        void setBitDefaults()
        {
            svg_inherited_flags._iflags = 0;
            svg_inherited_flags.f._clipRule = initialClipRule();
            svg_inherited_flags.f._colorRendering = initialColorRendering();
            svg_inherited_flags.f._fillRule = initialFillRule();
            svg_inherited_flags.f._imageRendering = initialImageRendering();
            svg_inherited_flags.f._shapeRendering = initialShapeRendering();
            svg_inherited_flags.f._textRendering = initialTextRendering();
            svg_inherited_flags.f._textAnchor = initialTextAnchor();
            svg_inherited_flags.f._capStyle = initialCapStyle();
            svg_inherited_flags.f._joinStyle = initialJoinStyle();
            svg_inherited_flags.f._colorInterpolation = initialColorInterpolation();
            svg_inherited_flags.f._colorInterpolationFilters = initialColorInterpolationFilters();
            svg_inherited_flags.f._pointerEvents = initialPointerEvents();
            svg_inherited_flags.f._writingMode = initialWritingMode();

            svg_noninherited_flags._niflags = 0;
            svg_noninherited_flags.f._alignmentBaseline = initialAlignmentBaseline();
            svg_noninherited_flags.f._dominantBaseline = initialDominantBaseline();
            svg_noninherited_flags.f._baselineShift = initialBaselineShift();
        }
    };

} // namespace WebCore

#endif // ENABLE(SVG)
#endif // SVGRenderStyle_h

// vim:ts=4:noet