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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/SVGSVGElement.h"
     28 #include "core/svg/SVGTransformList.h"
     29 #include "core/svg/SVGZoomAndPan.h"
     30 #include "wtf/WeakPtr.h"
     31 
     32 namespace WebCore {
     33 
     34 class ExceptionState;
     35 class SVGTransformListPropertyTearOff;
     36 
     37 class SVGViewSpec FINAL : public RefCounted<SVGViewSpec>, public ScriptWrappable, public SVGZoomAndPan, public SVGFitToViewBox {
     38 public:
     39     using RefCounted<SVGViewSpec>::ref;
     40     using RefCounted<SVGViewSpec>::deref;
     41 
     42     static PassRefPtr<SVGViewSpec> create(WeakPtr<SVGSVGElement> contextElement)
     43     {
     44         return adoptRef(new SVGViewSpec(contextElement));
     45     }
     46 
     47     bool parseViewSpec(const String&);
     48     void reset();
     49 
     50     SVGElement* viewTarget() const;
     51     String viewBoxString() const;
     52 
     53     String preserveAspectRatioString() const;
     54 
     55     void setTransformString(const String&);
     56     String transformString() const;
     57 
     58     void setViewTargetString(const String& string) { m_viewTargetString = string; }
     59     String viewTargetString() const { return m_viewTargetString; }
     60 
     61     SVGZoomAndPanType zoomAndPan() const { return m_zoomAndPan; }
     62     void setZoomAndPan(unsigned short zoomAndPan) { setZoomAndPanBaseValue(zoomAndPan); }
     63     void setZoomAndPan(unsigned short, ExceptionState&);
     64     void setZoomAndPanBaseValue(unsigned short zoomAndPan) { m_zoomAndPan = SVGZoomAndPan::parseFromNumber(zoomAndPan); }
     65 
     66     SVGElement* contextElement() const { return m_contextElement.get(); }
     67 
     68     // Custom non-animated 'transform' property.
     69     SVGTransformListPropertyTearOff* transform();
     70     SVGTransformList transformBaseValue() const { return m_transform; }
     71 
     72     // Custom animated 'viewBox' property.
     73     PassRefPtr<SVGAnimatedRect> viewBox();
     74     SVGRect& viewBoxCurrentValue() { return m_viewBox; }
     75     SVGRect viewBoxBaseValue() const { return m_viewBox; }
     76     void setViewBoxBaseValue(const SVGRect& viewBox) { m_viewBox = viewBox; }
     77 
     78     // Custom animated 'preserveAspectRatio' property.
     79     PassRefPtr<SVGAnimatedPreserveAspectRatio> preserveAspectRatio();
     80     SVGPreserveAspectRatio& preserveAspectRatioCurrentValue() { return m_preserveAspectRatio; }
     81     SVGPreserveAspectRatio preserveAspectRatioBaseValue() const { return m_preserveAspectRatio; }
     82     void setPreserveAspectRatioBaseValue(const SVGPreserveAspectRatio& preserveAspectRatio) { m_preserveAspectRatio = preserveAspectRatio; }
     83 
     84 private:
     85     explicit SVGViewSpec(WeakPtr<SVGSVGElement>);
     86 
     87     static const SVGPropertyInfo* transformPropertyInfo();
     88     static const SVGPropertyInfo* viewBoxPropertyInfo();
     89     static const SVGPropertyInfo* preserveAspectRatioPropertyInfo();
     90 
     91     static const AtomicString& transformIdentifier();
     92     static const AtomicString& viewBoxIdentifier();
     93     static const AtomicString& preserveAspectRatioIdentifier();
     94 
     95     static PassRefPtr<SVGAnimatedProperty> lookupOrCreateTransformWrapper(SVGViewSpec* contextElement);
     96     static PassRefPtr<SVGAnimatedProperty> lookupOrCreateViewBoxWrapper(SVGViewSpec* contextElement);
     97     static PassRefPtr<SVGAnimatedProperty> lookupOrCreatePreserveAspectRatioWrapper(SVGViewSpec* contextElement);
     98 
     99     template<typename CharType>
    100     bool parseViewSpecInternal(const CharType* ptr, const CharType* end);
    101 
    102     WeakPtr<SVGSVGElement> m_contextElement;
    103 
    104     SVGZoomAndPanType m_zoomAndPan;
    105     SVGTransformList m_transform;
    106     SVGRect m_viewBox;
    107     SVGPreserveAspectRatio m_preserveAspectRatio;
    108     String m_viewTargetString;
    109 };
    110 
    111 } // namespace WebCore
    112 
    113 #endif
    114