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      1 /*
      2  * Copyright (C) 2007 Rob Buis <buis (at) kde.org>
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #ifndef SVGViewSpec_h
     21 #define SVGViewSpec_h
     22 
     23 #include "bindings/v8/ScriptWrappable.h"
     24 #include "core/svg/SVGAnimatedPreserveAspectRatio.h"
     25 #include "core/svg/SVGAnimatedRect.h"
     26 #include "core/svg/SVGFitToViewBox.h"
     27 #include "core/svg/SVGTransformList.h"
     28 #include "core/svg/SVGZoomAndPan.h"
     29 
     30 namespace WebCore {
     31 
     32 class ExceptionState;
     33 class SVGElement;
     34 class SVGTransformListPropertyTearOff;
     35 
     36 class SVGViewSpec : public RefCounted<SVGViewSpec>, public ScriptWrappable, public SVGZoomAndPan, public SVGFitToViewBox {
     37 public:
     38     virtual ~SVGViewSpec() { }
     39 
     40     using RefCounted<SVGViewSpec>::ref;
     41     using RefCounted<SVGViewSpec>::deref;
     42 
     43     static PassRefPtr<SVGViewSpec> create(SVGElement* contextElement)
     44     {
     45         return adoptRef(new SVGViewSpec(contextElement));
     46     }
     47 
     48     bool parseViewSpec(const String&);
     49     void reset();
     50 
     51     SVGElement* viewTarget() const;
     52     String viewBoxString() const;
     53 
     54     String preserveAspectRatioString() const;
     55 
     56     void setTransformString(const String&);
     57     String transformString() const;
     58 
     59     void setViewTargetString(const String& string) { m_viewTargetString = string; }
     60     String viewTargetString() const { return m_viewTargetString; }
     61 
     62     SVGZoomAndPanType zoomAndPan() const { return m_zoomAndPan; }
     63     void setZoomAndPan(unsigned short zoomAndPan) { setZoomAndPanBaseValue(zoomAndPan); }
     64     void setZoomAndPan(unsigned short, ExceptionState&);
     65     void setZoomAndPanBaseValue(unsigned short zoomAndPan) { m_zoomAndPan = SVGZoomAndPan::parseFromNumber(zoomAndPan); }
     66 
     67     SVGElement* contextElement() const { return m_contextElement; }
     68     void resetContextElement() { m_contextElement = 0; }
     69 
     70     // Custom non-animated 'transform' property.
     71     SVGTransformListPropertyTearOff* transform();
     72     SVGTransformList transformBaseValue() const { return m_transform; }
     73 
     74     // Custom animated 'viewBox' property.
     75     PassRefPtr<SVGAnimatedRect> viewBox();
     76     FloatRect& viewBoxCurrentValue() { return m_viewBox; }
     77     FloatRect viewBoxBaseValue() const { return m_viewBox; }
     78     void setViewBoxBaseValue(const FloatRect& viewBox) { m_viewBox = viewBox; }
     79 
     80     // Custom animated 'preserveAspectRatio' property.
     81     PassRefPtr<SVGAnimatedPreserveAspectRatio> preserveAspectRatio();
     82     SVGPreserveAspectRatio& preserveAspectRatioCurrentValue() { return m_preserveAspectRatio; }
     83     SVGPreserveAspectRatio preserveAspectRatioBaseValue() const { return m_preserveAspectRatio; }
     84     void setPreserveAspectRatioBaseValue(const SVGPreserveAspectRatio& preserveAspectRatio) { m_preserveAspectRatio = preserveAspectRatio; }
     85 
     86 private:
     87     explicit SVGViewSpec(SVGElement*);
     88 
     89     static const SVGPropertyInfo* transformPropertyInfo();
     90     static const SVGPropertyInfo* viewBoxPropertyInfo();
     91     static const SVGPropertyInfo* preserveAspectRatioPropertyInfo();
     92 
     93     static const AtomicString& transformIdentifier();
     94     static const AtomicString& viewBoxIdentifier();
     95     static const AtomicString& preserveAspectRatioIdentifier();
     96 
     97     static PassRefPtr<SVGAnimatedProperty> lookupOrCreateTransformWrapper(SVGViewSpec* contextElement);
     98     static PassRefPtr<SVGAnimatedProperty> lookupOrCreateViewBoxWrapper(SVGViewSpec* contextElement);
     99     static PassRefPtr<SVGAnimatedProperty> lookupOrCreatePreserveAspectRatioWrapper(SVGViewSpec* contextElement);
    100 
    101     template<typename CharType>
    102     bool parseViewSpecInternal(const CharType* ptr, const CharType* end);
    103 
    104     SVGElement* m_contextElement;
    105     SVGZoomAndPanType m_zoomAndPan;
    106 
    107     SVGTransformList m_transform;
    108     FloatRect m_viewBox;
    109     SVGPreserveAspectRatio m_preserveAspectRatio;
    110     String m_viewTargetString;
    111 };
    112 
    113 } // namespace WebCore
    114 
    115 #endif
    116