mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 06:05:44 +00:00
444 lines
16 KiB
C++
444 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_dom_SVGSVGElement_h
|
|
#define mozilla_dom_SVGSVGElement_h
|
|
|
|
#include "mozilla/dom/FromParser.h"
|
|
#include "nsISVGPoint.h"
|
|
#include "nsSVGEnum.h"
|
|
#include "nsSVGLength2.h"
|
|
#include "SVGGraphicsElement.h"
|
|
#include "SVGImageContext.h"
|
|
#include "nsSVGViewBox.h"
|
|
#include "SVGPreserveAspectRatio.h"
|
|
#include "SVGAnimatedPreserveAspectRatio.h"
|
|
#include "mozilla/Attributes.h"
|
|
|
|
nsresult NS_NewSVGSVGElement(nsIContent **aResult,
|
|
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
|
|
mozilla::dom::FromParser aFromParser);
|
|
|
|
class nsSMILTimeContainer;
|
|
class nsSVGOuterSVGFrame;
|
|
class nsSVGInnerSVGFrame;
|
|
class nsSVGImageFrame;
|
|
|
|
namespace mozilla {
|
|
class AutoSVGRenderingState;
|
|
class DOMSVGAnimatedPreserveAspectRatio;
|
|
class DOMSVGLength;
|
|
class DOMSVGNumber;
|
|
class EventChainPreVisitor;
|
|
class SVGFragmentIdentifier;
|
|
|
|
namespace dom {
|
|
class SVGAngle;
|
|
class SVGAnimatedRect;
|
|
class SVGMatrix;
|
|
class SVGTransform;
|
|
class SVGViewElement;
|
|
class SVGIRect;
|
|
|
|
class SVGSVGElement;
|
|
|
|
class DOMSVGTranslatePoint MOZ_FINAL : public nsISVGPoint {
|
|
public:
|
|
DOMSVGTranslatePoint(SVGPoint* aPt, SVGSVGElement *aElement)
|
|
: nsISVGPoint(aPt, true), mElement(aElement) {}
|
|
|
|
explicit DOMSVGTranslatePoint(DOMSVGTranslatePoint* aPt)
|
|
: nsISVGPoint(&aPt->mPt, true), mElement(aPt->mElement) {}
|
|
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DOMSVGTranslatePoint, nsISVGPoint)
|
|
|
|
virtual DOMSVGPoint* Copy() MOZ_OVERRIDE;
|
|
|
|
// WebIDL
|
|
virtual float X() MOZ_OVERRIDE { return mPt.GetX(); }
|
|
virtual float Y() MOZ_OVERRIDE { return mPt.GetY(); }
|
|
virtual void SetX(float aValue, ErrorResult& rv) MOZ_OVERRIDE;
|
|
virtual void SetY(float aValue, ErrorResult& rv) MOZ_OVERRIDE;
|
|
virtual already_AddRefed<nsISVGPoint> MatrixTransform(SVGMatrix& matrix) MOZ_OVERRIDE;
|
|
|
|
virtual nsISupports* GetParentObject() MOZ_OVERRIDE;
|
|
|
|
nsRefPtr<SVGSVGElement> mElement;
|
|
|
|
private:
|
|
~DOMSVGTranslatePoint() {}
|
|
};
|
|
|
|
class svgFloatSize {
|
|
public:
|
|
svgFloatSize(float aWidth, float aHeight)
|
|
: width(aWidth)
|
|
, height(aHeight)
|
|
{}
|
|
bool operator!=(const svgFloatSize& rhs) {
|
|
return width != rhs.width || height != rhs.height;
|
|
}
|
|
float width;
|
|
float height;
|
|
};
|
|
|
|
typedef SVGGraphicsElement SVGSVGElementBase;
|
|
|
|
class SVGSVGElement MOZ_FINAL : public SVGSVGElementBase
|
|
{
|
|
friend class ::nsSVGOuterSVGFrame;
|
|
friend class ::nsSVGInnerSVGFrame;
|
|
friend class mozilla::SVGFragmentIdentifier;
|
|
friend class mozilla::AutoSVGRenderingState;
|
|
|
|
SVGSVGElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo,
|
|
FromParser aFromParser);
|
|
virtual JSObject* WrapNode(JSContext *aCx) MOZ_OVERRIDE;
|
|
|
|
friend nsresult (::NS_NewSVGSVGElement(nsIContent **aResult,
|
|
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
|
|
mozilla::dom::FromParser aFromParser));
|
|
|
|
~SVGSVGElement();
|
|
|
|
public:
|
|
// interfaces:
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGSVGElement, SVGSVGElementBase)
|
|
|
|
/**
|
|
* For use by zoom controls to allow currentScale, currentTranslate.x and
|
|
* currentTranslate.y to be set by a single operation that dispatches a
|
|
* single SVGZoom event (instead of one SVGZoom and two SVGScroll events).
|
|
*/
|
|
void SetCurrentScaleTranslate(float s, float x, float y);
|
|
|
|
/**
|
|
* Retrieve the value of currentScale and currentTranslate.
|
|
*/
|
|
const SVGPoint& GetCurrentTranslate() { return mCurrentTranslate; }
|
|
float GetCurrentScale() { return mCurrentScale; }
|
|
|
|
/**
|
|
* Retrieve the value of currentScale, currentTranslate.x or
|
|
* currentTranslate.y prior to the last change made to any one of them.
|
|
*/
|
|
const SVGPoint& GetPreviousTranslate() { return mPreviousTranslate; }
|
|
float GetPreviousScale() { return mPreviousScale; }
|
|
|
|
nsSMILTimeContainer* GetTimedDocumentRoot();
|
|
|
|
// nsIContent interface
|
|
NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const MOZ_OVERRIDE;
|
|
virtual nsresult PreHandleEvent(EventChainPreVisitor& aVisitor) MOZ_OVERRIDE;
|
|
|
|
virtual bool IsEventAttributeName(nsIAtom* aName) MOZ_OVERRIDE;
|
|
|
|
// nsSVGElement specializations:
|
|
virtual gfxMatrix PrependLocalTransformsTo(const gfxMatrix &aMatrix,
|
|
TransformTypes aWhich = eAllTransforms) const MOZ_OVERRIDE;
|
|
virtual bool HasValidDimensions() const MOZ_OVERRIDE;
|
|
|
|
// SVGSVGElement methods:
|
|
float GetLength(uint8_t mCtxType);
|
|
|
|
// public helpers:
|
|
|
|
/**
|
|
* Returns true if this element has a base/anim value for its "viewBox"
|
|
* attribute that defines a viewBox rectangle with finite values, or
|
|
* if there is a view element overriding this element's viewBox and it
|
|
* has a valid viewBox.
|
|
*
|
|
* Note that this does not check whether we need to synthesize a viewBox,
|
|
* so you must call ShouldSynthesizeViewBox() if you need to check that too.
|
|
*
|
|
* Note also that this method does not pay attention to whether the width or
|
|
* height values of the viewBox rect are positive!
|
|
*/
|
|
bool HasViewBoxRect() const;
|
|
|
|
/**
|
|
* Returns true if we should synthesize a viewBox for ourselves (that is, if
|
|
* we're the root element in an image document, and we're not currently being
|
|
* painted for an <svg:image> element).
|
|
*
|
|
* Only call this method if HasViewBoxRect() returns false.
|
|
*/
|
|
bool ShouldSynthesizeViewBox() const;
|
|
|
|
bool HasViewBoxOrSyntheticViewBox() const {
|
|
return HasViewBoxRect() || ShouldSynthesizeViewBox();
|
|
}
|
|
|
|
gfx::Matrix GetViewBoxTransform() const;
|
|
|
|
bool HasChildrenOnlyTransform() const {
|
|
return mHasChildrenOnlyTransform;
|
|
}
|
|
|
|
void UpdateHasChildrenOnlyTransform();
|
|
|
|
enum ChildrenOnlyTransformChangedFlags {
|
|
eDuringReflow = 1
|
|
};
|
|
|
|
/**
|
|
* This method notifies the style system that the overflow rects of our
|
|
* immediate childrens' frames need to be updated. It is called by our own
|
|
* frame when changes (e.g. to currentScale) cause our children-only
|
|
* transform to change.
|
|
*
|
|
* The reason we have this method instead of overriding
|
|
* GetAttributeChangeHint is because we need to act on non-attribute (e.g.
|
|
* currentScale) changes in addition to attribute (e.g. viewBox) changes.
|
|
*/
|
|
void ChildrenOnlyTransformChanged(uint32_t aFlags = 0);
|
|
|
|
// This services any pending notifications for the transform on on this root
|
|
// <svg> node needing to be recalculated. (Only applicable in
|
|
// SVG-as-an-image documents.)
|
|
virtual void FlushImageTransformInvalidation();
|
|
|
|
virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const MOZ_OVERRIDE;
|
|
|
|
// Returns true IFF our attributes are currently overridden by a <view>
|
|
// element and that element's ID matches the passed-in string.
|
|
bool IsOverriddenBy(const nsAString &aViewID) const {
|
|
return mCurrentViewID && mCurrentViewID->Equals(aViewID);
|
|
}
|
|
|
|
svgFloatSize GetViewportSize() const {
|
|
return svgFloatSize(mViewportWidth, mViewportHeight);
|
|
}
|
|
|
|
void SetViewportSize(const svgFloatSize& aSize) {
|
|
mViewportWidth = aSize.width;
|
|
mViewportHeight = aSize.height;
|
|
}
|
|
|
|
// WebIDL
|
|
already_AddRefed<SVGAnimatedLength> X();
|
|
already_AddRefed<SVGAnimatedLength> Y();
|
|
already_AddRefed<SVGAnimatedLength> Width();
|
|
already_AddRefed<SVGAnimatedLength> Height();
|
|
float PixelUnitToMillimeterX();
|
|
float PixelUnitToMillimeterY();
|
|
float ScreenPixelToMillimeterX();
|
|
float ScreenPixelToMillimeterY();
|
|
bool UseCurrentView();
|
|
float CurrentScale();
|
|
void SetCurrentScale(float aCurrentScale);
|
|
already_AddRefed<nsISVGPoint> CurrentTranslate();
|
|
void SetCurrentTranslate(float x, float y);
|
|
uint32_t SuspendRedraw(uint32_t max_wait_milliseconds);
|
|
void UnsuspendRedraw(uint32_t suspend_handle_id);
|
|
void UnsuspendRedrawAll();
|
|
void ForceRedraw(ErrorResult& rv);
|
|
void PauseAnimations();
|
|
void UnpauseAnimations();
|
|
bool AnimationsPaused();
|
|
float GetCurrentTime();
|
|
void SetCurrentTime(float seconds);
|
|
void DeselectAll();
|
|
already_AddRefed<DOMSVGNumber> CreateSVGNumber();
|
|
already_AddRefed<DOMSVGLength> CreateSVGLength();
|
|
already_AddRefed<SVGAngle> CreateSVGAngle();
|
|
already_AddRefed<nsISVGPoint> CreateSVGPoint();
|
|
already_AddRefed<SVGMatrix> CreateSVGMatrix();
|
|
already_AddRefed<SVGIRect> CreateSVGRect();
|
|
already_AddRefed<SVGTransform> CreateSVGTransform();
|
|
already_AddRefed<SVGTransform> CreateSVGTransformFromMatrix(SVGMatrix& matrix);
|
|
using nsINode::GetElementById; // This does what we want
|
|
already_AddRefed<SVGAnimatedRect> ViewBox();
|
|
already_AddRefed<DOMSVGAnimatedPreserveAspectRatio> PreserveAspectRatio();
|
|
uint16_t ZoomAndPan();
|
|
void SetZoomAndPan(uint16_t aZoomAndPan, ErrorResult& rv);
|
|
|
|
private:
|
|
// nsSVGElement overrides
|
|
|
|
virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
|
|
nsIContent* aBindingParent,
|
|
bool aCompileEventHandlers) MOZ_OVERRIDE;
|
|
virtual void UnbindFromTree(bool aDeep, bool aNullParent) MOZ_OVERRIDE;
|
|
|
|
// implementation helpers:
|
|
|
|
SVGViewElement* GetCurrentViewElement() const;
|
|
|
|
// Methods for <image> elements to override my "PreserveAspectRatio" value.
|
|
// These are private so that only our friends (AutoSVGRenderingState in
|
|
// particular) have access.
|
|
void SetImageOverridePreserveAspectRatio(const SVGPreserveAspectRatio& aPAR);
|
|
void ClearImageOverridePreserveAspectRatio();
|
|
|
|
// Set/Clear properties to hold old or override versions of attributes
|
|
bool SetPreserveAspectRatioProperty(const SVGPreserveAspectRatio& aPAR);
|
|
const SVGPreserveAspectRatio* GetPreserveAspectRatioProperty() const;
|
|
bool ClearPreserveAspectRatioProperty();
|
|
bool SetViewBoxProperty(const nsSVGViewBoxRect& aViewBox);
|
|
const nsSVGViewBoxRect* GetViewBoxProperty() const;
|
|
bool ClearViewBoxProperty();
|
|
bool SetZoomAndPanProperty(uint16_t aValue);
|
|
uint16_t GetZoomAndPanProperty() const;
|
|
bool ClearZoomAndPanProperty();
|
|
bool SetTransformProperty(const SVGTransformList& aValue);
|
|
const SVGTransformList* GetTransformProperty() const;
|
|
bool ClearTransformProperty();
|
|
|
|
bool IsRoot() const {
|
|
NS_ASSERTION((IsInDoc() && !GetParent()) ==
|
|
(OwnerDoc() && (OwnerDoc()->GetRootElement() == this)),
|
|
"Can't determine if we're root");
|
|
return IsInDoc() && !GetParent();
|
|
}
|
|
|
|
/**
|
|
* Returns true if this is an SVG <svg> element that is the child of
|
|
* another non-foreignObject SVG element.
|
|
*/
|
|
bool IsInner() const {
|
|
const nsIContent *parent = GetFlattenedTreeParent();
|
|
return parent && parent->IsSVG() &&
|
|
parent->Tag() != nsGkAtoms::foreignObject;
|
|
}
|
|
|
|
/*
|
|
* While binding to the tree we need to determine if we will be the outermost
|
|
* <svg> element _before_ the children are bound (as they want to know what
|
|
* timed document root to register with) and therefore _before_ our parent is
|
|
* set (both actions are performed by Element::BindToTree) so we
|
|
* can't use GetOwnerSVGElement() as it relies on GetParent(). This code is
|
|
* basically a simplified version of GetOwnerSVGElement that uses the parent
|
|
* parameters passed in instead.
|
|
*/
|
|
bool WillBeOutermostSVG(nsIContent* aParent,
|
|
nsIContent* aBindingParent) const;
|
|
|
|
// invalidate viewbox -> viewport xform & inform frames
|
|
void InvalidateTransformNotifyFrame();
|
|
|
|
// Returns true if we have at least one of the following:
|
|
// - a (valid or invalid) value for the preserveAspectRatio attribute
|
|
// - a SMIL-animated value for the preserveAspectRatio attribute
|
|
bool HasPreserveAspectRatio();
|
|
|
|
/**
|
|
* Returns the explicit viewBox rect, if specified, or else a synthesized
|
|
* viewBox, if appropriate, or else a viewBox matching the dimensions of the
|
|
* SVG viewport.
|
|
*/
|
|
nsSVGViewBoxRect GetViewBoxWithSynthesis(
|
|
float aViewportWidth, float aViewportHeight) const;
|
|
/**
|
|
* Returns the explicit or default preserveAspectRatio, unless we're
|
|
* synthesizing a viewBox, in which case it returns the "none" value.
|
|
*/
|
|
SVGPreserveAspectRatio GetPreserveAspectRatioWithOverride() const;
|
|
|
|
virtual LengthAttributesInfo GetLengthInfo() MOZ_OVERRIDE;
|
|
|
|
enum { ATTR_X, ATTR_Y, ATTR_WIDTH, ATTR_HEIGHT };
|
|
nsSVGLength2 mLengthAttributes[4];
|
|
static LengthInfo sLengthInfo[4];
|
|
|
|
virtual EnumAttributesInfo GetEnumInfo() MOZ_OVERRIDE;
|
|
|
|
enum { ZOOMANDPAN };
|
|
nsSVGEnum mEnumAttributes[1];
|
|
static nsSVGEnumMapping sZoomAndPanMap[];
|
|
static EnumInfo sEnumInfo[1];
|
|
|
|
virtual nsSVGViewBox *GetViewBox() MOZ_OVERRIDE;
|
|
virtual SVGAnimatedPreserveAspectRatio *GetPreserveAspectRatio() MOZ_OVERRIDE;
|
|
|
|
nsSVGViewBox mViewBox;
|
|
SVGAnimatedPreserveAspectRatio mPreserveAspectRatio;
|
|
|
|
nsAutoPtr<nsString> mCurrentViewID;
|
|
|
|
// The size of the rectangular SVG viewport into which we render. This is
|
|
// not (necessarily) the same as the content area. See:
|
|
//
|
|
// http://www.w3.org/TR/SVG11/coords.html#ViewportSpace
|
|
//
|
|
// XXXjwatt Currently only used for outer <svg>, but maybe we could use -1 to
|
|
// flag this as an inner <svg> to save the overhead of GetCtx calls?
|
|
// XXXjwatt our frame should probably reset these when it's destroyed.
|
|
float mViewportWidth, mViewportHeight;
|
|
|
|
// The time container for animations within this SVG document fragment. Set
|
|
// for all outermost <svg> elements (not nested <svg> elements).
|
|
nsAutoPtr<nsSMILTimeContainer> mTimedDocumentRoot;
|
|
|
|
// zoom and pan
|
|
// IMPORTANT: see the comment in RecordCurrentScaleTranslate before writing
|
|
// code to change any of these!
|
|
SVGPoint mCurrentTranslate;
|
|
float mCurrentScale;
|
|
SVGPoint mPreviousTranslate;
|
|
float mPreviousScale;
|
|
|
|
// For outermost <svg> elements created from parsing, animation is started by
|
|
// the onload event in accordance with the SVG spec, but for <svg> elements
|
|
// created by script or promoted from inner <svg> to outermost <svg> we need
|
|
// to manually kick off animation when they are bound to the tree.
|
|
bool mStartAnimationOnBindToTree;
|
|
bool mImageNeedsTransformInvalidation;
|
|
bool mIsPaintingSVGImageElement;
|
|
bool mHasChildrenOnlyTransform;
|
|
bool mUseCurrentView;
|
|
};
|
|
|
|
} // namespace dom
|
|
|
|
// Helper class to automatically manage temporary changes to an SVG document's
|
|
// state for rendering purposes.
|
|
class MOZ_STACK_CLASS AutoSVGRenderingState
|
|
{
|
|
public:
|
|
AutoSVGRenderingState(const Maybe<SVGImageContext>& aSVGContext,
|
|
float aFrameTime,
|
|
dom::SVGSVGElement* aRootElem
|
|
MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
|
|
: mHaveOverrides(aSVGContext.isSome() &&
|
|
aSVGContext->GetPreserveAspectRatio().isSome())
|
|
, mRootElem(aRootElem)
|
|
{
|
|
MOZ_GUARD_OBJECT_NOTIFIER_INIT;
|
|
MOZ_ASSERT(mRootElem, "No SVG node to manage?");
|
|
if (mHaveOverrides) {
|
|
// Override preserveAspectRatio in our helper document.
|
|
// XXXdholbert We should technically be overriding the helper doc's clip
|
|
// and overflow properties here, too. See bug 272288 comment 36.
|
|
mRootElem->SetImageOverridePreserveAspectRatio(
|
|
*aSVGContext->GetPreserveAspectRatio());
|
|
}
|
|
|
|
mOriginalTime = mRootElem->GetCurrentTime();
|
|
mRootElem->SetCurrentTime(aFrameTime); // Does nothing if there's no change.
|
|
}
|
|
|
|
~AutoSVGRenderingState()
|
|
{
|
|
mRootElem->SetCurrentTime(mOriginalTime);
|
|
if (mHaveOverrides) {
|
|
mRootElem->ClearImageOverridePreserveAspectRatio();
|
|
}
|
|
}
|
|
|
|
private:
|
|
const bool mHaveOverrides;
|
|
float mOriginalTime;
|
|
const nsRefPtr<dom::SVGSVGElement> mRootElem;
|
|
MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // SVGSVGElement_h
|