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      1 /*
      2  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Rob Buis <buis (at) kde.org>
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef SVGSVGElement_h
     22 #define SVGSVGElement_h
     23 
     24 #include "core/svg/SVGAnimatedBoolean.h"
     25 #include "core/svg/SVGAnimatedLength.h"
     26 #include "core/svg/SVGAnimatedPreserveAspectRatio.h"
     27 #include "core/svg/SVGAnimatedRect.h"
     28 #include "core/svg/SVGExternalResourcesRequired.h"
     29 #include "core/svg/SVGFitToViewBox.h"
     30 #include "core/svg/SVGGraphicsElement.h"
     31 #include "core/svg/SVGZoomAndPan.h"
     32 
     33 namespace WebCore {
     34 
     35 class SVGAngle;
     36 class SVGMatrix;
     37 class SVGTransform;
     38 class SVGViewSpec;
     39 class SVGViewElement;
     40 class SMILTimeContainer;
     41 
     42 class SVGSVGElement FINAL : public SVGGraphicsElement,
     43                             public SVGExternalResourcesRequired,
     44                             public SVGFitToViewBox,
     45                             public SVGZoomAndPan {
     46 public:
     47     static PassRefPtr<SVGSVGElement> create(const QualifiedName&, Document*);
     48 
     49     using SVGGraphicsElement::ref;
     50     using SVGGraphicsElement::deref;
     51 
     52     virtual bool isValid() const { return SVGTests::isValid(); }
     53     virtual bool supportsFocus() const OVERRIDE { return hasFocusEventListeners(); }
     54 
     55     // 'SVGSVGElement' functions
     56     const AtomicString& contentScriptType() const;
     57     void setContentScriptType(const AtomicString& type);
     58 
     59     const AtomicString& contentStyleType() const;
     60     void setContentStyleType(const AtomicString& type);
     61 
     62     SVGRect viewport() const;
     63 
     64     float pixelUnitToMillimeterX() const;
     65     float pixelUnitToMillimeterY() const;
     66     float screenPixelToMillimeterX() const;
     67     float screenPixelToMillimeterY() const;
     68 
     69     bool useCurrentView() const { return m_useCurrentView; }
     70     SVGViewSpec* currentView();
     71 
     72     enum ConsiderCSSMode {
     73         RespectCSSProperties,
     74         IgnoreCSSProperties
     75     };
     76 
     77     // RenderSVGRoot wants to query the intrinsic size, by only examining the width/height attributes.
     78     Length intrinsicWidth(ConsiderCSSMode = RespectCSSProperties) const;
     79     Length intrinsicHeight(ConsiderCSSMode = RespectCSSProperties) const;
     80     FloatSize currentViewportSize() const;
     81     SVGRect currentViewBoxRect() const;
     82 
     83     float currentScale() const;
     84     void setCurrentScale(float scale);
     85 
     86     SVGPoint& currentTranslate() { return m_translation; }
     87     void setCurrentTranslate(const FloatPoint&);
     88 
     89     // Only used from the bindings.
     90     void updateCurrentTranslate();
     91 
     92     SMILTimeContainer* timeContainer() const { return m_timeContainer.get(); }
     93 
     94     void pauseAnimations();
     95     void unpauseAnimations();
     96     bool animationsPaused() const;
     97 
     98     float getCurrentTime() const;
     99     void setCurrentTime(float seconds);
    100 
    101     unsigned suspendRedraw(unsigned maxWaitMilliseconds);
    102     void unsuspendRedraw(unsigned suspendHandleId);
    103     void unsuspendRedrawAll();
    104     void forceRedraw();
    105 
    106     PassRefPtr<NodeList> getIntersectionList(const SVGRect&, SVGElement* referenceElement) const;
    107     PassRefPtr<NodeList> getEnclosureList(const SVGRect&, SVGElement* referenceElement) const;
    108     bool checkIntersection(SVGElement*, const SVGRect&) const;
    109     bool checkEnclosure(SVGElement*, const SVGRect&) const;
    110     void deselectAll();
    111 
    112     static float createSVGNumber();
    113     static SVGLength createSVGLength();
    114     static SVGAngle createSVGAngle();
    115     static SVGPoint createSVGPoint();
    116     static SVGMatrix createSVGMatrix();
    117     static SVGRect createSVGRect();
    118     static SVGTransform createSVGTransform();
    119     static SVGTransform createSVGTransformFromMatrix(const SVGMatrix&);
    120 
    121     AffineTransform viewBoxToViewTransform(float viewWidth, float viewHeight) const;
    122 
    123     void setupInitialView(const String& fragmentIdentifier, Element* anchorNode);
    124 
    125     Element* getElementById(const AtomicString&) const;
    126 
    127     bool widthAttributeEstablishesViewport() const;
    128     bool heightAttributeEstablishesViewport() const;
    129 
    130     SVGZoomAndPanType zoomAndPan() const { return m_zoomAndPan; }
    131     void setZoomAndPan(unsigned short zoomAndPan) { m_zoomAndPan = SVGZoomAndPan::parseFromNumber(zoomAndPan); }
    132 
    133     bool hasEmptyViewBox() const { return viewBoxIsValid() && viewBoxCurrentValue().isEmpty(); }
    134 
    135 private:
    136     SVGSVGElement(const QualifiedName&, Document*);
    137     virtual ~SVGSVGElement();
    138 
    139     virtual bool isSVGSVGElement() const OVERRIDE { return true; }
    140 
    141     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
    142 
    143     virtual bool rendererIsNeeded(const NodeRenderingContext&) OVERRIDE;
    144     virtual RenderObject* createRenderer(RenderStyle*);
    145 
    146     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
    147     virtual void removedFrom(ContainerNode*) OVERRIDE;
    148 
    149     virtual void svgAttributeChanged(const QualifiedName&);
    150 
    151     virtual bool selfHasRelativeLengths() const;
    152 
    153     void inheritViewAttributes(SVGViewElement*);
    154 
    155     enum CollectIntersectionOrEnclosure {
    156         CollectIntersectionList,
    157         CollectEnclosureList
    158     };
    159 
    160     PassRefPtr<NodeList> collectIntersectionOrEnclosureList(const SVGRect&, SVGElement*, CollectIntersectionOrEnclosure) const;
    161 
    162     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGSVGElement)
    163         DECLARE_ANIMATED_LENGTH(X, x)
    164         DECLARE_ANIMATED_LENGTH(Y, y)
    165         DECLARE_ANIMATED_LENGTH(Width, width)
    166         DECLARE_ANIMATED_LENGTH(Height, height)
    167         DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
    168         DECLARE_ANIMATED_RECT(ViewBox, viewBox)
    169         DECLARE_ANIMATED_PRESERVEASPECTRATIO(PreserveAspectRatio, preserveAspectRatio)
    170     END_DECLARE_ANIMATED_PROPERTIES
    171 
    172     virtual AffineTransform localCoordinateSpaceTransform(SVGLocatable::CTMScope) const;
    173 
    174     bool m_useCurrentView;
    175     SVGZoomAndPanType m_zoomAndPan;
    176     RefPtr<SMILTimeContainer> m_timeContainer;
    177     SVGPoint m_translation;
    178     RefPtr<SVGViewSpec> m_viewSpec;
    179 };
    180 
    181 inline SVGSVGElement* toSVGSVGElement(Node* node)
    182 {
    183     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isSVGElement());
    184     ASSERT_WITH_SECURITY_IMPLICATION(!node || toSVGElement(node)->isSVGSVGElement());
    185     return static_cast<SVGSVGElement*>(node);
    186 }
    187 
    188 } // namespace WebCore
    189 
    190 #endif
    191