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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/svg/nsSVGViewBox.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/svg/nsSVGViewBox.h')
-rw-r--r--dom/svg/nsSVGViewBox.h247
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diff --git a/dom/svg/nsSVGViewBox.h b/dom/svg/nsSVGViewBox.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 __NS_SVGVIEWBOX_H__
+#define __NS_SVGVIEWBOX_H__
+
+#include "nsAutoPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsError.h"
+#include "mozilla/dom/SVGAnimatedRect.h"
+#include "mozilla/dom/SVGIRect.h"
+#include "nsISMILAttr.h"
+#include "nsSVGElement.h"
+#include "mozilla/Attributes.h"
+#include "nsSVGAttrTearoffTable.h"
+
+class nsSMILValue;
+
+namespace mozilla {
+namespace dom {
+class SVGAnimationElement;
+} // namespace dom
+} // namespace mozilla
+
+struct nsSVGViewBoxRect
+{
+ float x, y;
+ float width, height;
+ bool none;
+
+ nsSVGViewBoxRect() : none(true) {}
+ nsSVGViewBoxRect(float aX, float aY, float aWidth, float aHeight) :
+ x(aX), y(aY), width(aWidth), height(aHeight), none(false) {}
+ nsSVGViewBoxRect(const nsSVGViewBoxRect& rhs) :
+ x(rhs.x), y(rhs.y), width(rhs.width), height(rhs.height), none(rhs.none) {}
+ bool operator==(const nsSVGViewBoxRect& aOther) const;
+};
+
+class nsSVGViewBox
+{
+public:
+
+ void Init();
+
+ /**
+ * Returns true if the corresponding "viewBox" attribute defined a rectangle
+ * with finite values and nonnegative width/height.
+ * Returns false if the viewBox was set to an invalid
+ * string, or if any of the four rect values were too big to store in a
+ * float, or the width/height are negative.
+ */
+ bool HasRect() const;
+
+ /**
+ * Returns true if the corresponding "viewBox" attribute either defined a
+ * rectangle with finite values or the special "none" value.
+ */
+ bool IsExplicitlySet() const
+ {
+ if (mAnimVal || mHasBaseVal) {
+ const nsSVGViewBoxRect& rect = GetAnimValue();
+ return rect.none || (rect.width >= 0 && rect.height >= 0);
+ }
+ return false;
+ }
+
+ const nsSVGViewBoxRect& GetBaseValue() const
+ { return mBaseVal; }
+ void SetBaseValue(const nsSVGViewBoxRect& aRect,
+ nsSVGElement *aSVGElement);
+ const nsSVGViewBoxRect& GetAnimValue() const
+ { return mAnimVal ? *mAnimVal : mBaseVal; }
+ void SetAnimValue(const nsSVGViewBoxRect& aRect,
+ nsSVGElement *aSVGElement);
+
+ nsresult SetBaseValueString(const nsAString& aValue,
+ nsSVGElement *aSVGElement,
+ bool aDoSetAttr);
+ void GetBaseValueString(nsAString& aValue) const;
+
+ already_AddRefed<mozilla::dom::SVGAnimatedRect>
+ ToSVGAnimatedRect(nsSVGElement *aSVGElement);
+
+ already_AddRefed<mozilla::dom::SVGIRect>
+ ToDOMBaseVal(nsSVGElement* aSVGElement);
+
+ already_AddRefed<mozilla::dom::SVGIRect>
+ ToDOMAnimVal(nsSVGElement* aSVGElement);
+
+ // Returns a new nsISMILAttr object that the caller must delete
+ nsISMILAttr* ToSMILAttr(nsSVGElement* aSVGElement);
+
+private:
+
+ nsSVGViewBoxRect mBaseVal;
+ nsAutoPtr<nsSVGViewBoxRect> mAnimVal;
+ bool mHasBaseVal;
+
+public:
+ struct DOMBaseVal final : public mozilla::dom::SVGIRect
+ {
+ NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMBaseVal)
+
+ DOMBaseVal(nsSVGViewBox *aVal, nsSVGElement *aSVGElement)
+ : mozilla::dom::SVGIRect()
+ , mVal(aVal)
+ , mSVGElement(aSVGElement)
+ {}
+
+ nsSVGViewBox* mVal; // kept alive because it belongs to content
+ RefPtr<nsSVGElement> mSVGElement;
+
+ float X() const override final
+ {
+ return mVal->GetBaseValue().x;
+ }
+
+ float Y() const override final
+ {
+ return mVal->GetBaseValue().y;
+ }
+
+ float Width() const override final
+ {
+ return mVal->GetBaseValue().width;
+ }
+
+ float Height() const override final
+ {
+ return mVal->GetBaseValue().height;
+ }
+
+ void SetX(float aX, mozilla::ErrorResult& aRv) final override;
+ void SetY(float aY, mozilla::ErrorResult& aRv) final override;
+ void SetWidth(float aWidth, mozilla::ErrorResult& aRv) final override;
+ void SetHeight(float aHeight, mozilla::ErrorResult& aRv) final override;
+
+ virtual nsIContent* GetParentObject() const override
+ {
+ return mSVGElement;
+ }
+
+ private:
+ virtual ~DOMBaseVal();
+ };
+
+ struct DOMAnimVal final : public mozilla::dom::SVGIRect
+ {
+ NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMAnimVal)
+
+ DOMAnimVal(nsSVGViewBox *aVal, nsSVGElement *aSVGElement)
+ : mozilla::dom::SVGIRect()
+ , mVal(aVal)
+ , mSVGElement(aSVGElement)
+ {}
+
+ nsSVGViewBox* mVal; // kept alive because it belongs to content
+ RefPtr<nsSVGElement> mSVGElement;
+
+ // Script may have modified animation parameters or timeline -- DOM getters
+ // need to flush any resample requests to reflect these modifications.
+ float X() const override final
+ {
+ mSVGElement->FlushAnimations();
+ return mVal->GetAnimValue().x;
+ }
+
+ float Y() const override final
+ {
+ mSVGElement->FlushAnimations();
+ return mVal->GetAnimValue().y;
+ }
+
+ float Width() const override final
+ {
+ mSVGElement->FlushAnimations();
+ return mVal->GetAnimValue().width;
+ }
+
+ float Height() const override final
+ {
+ mSVGElement->FlushAnimations();
+ return mVal->GetAnimValue().height;
+ }
+
+ void SetX(float aX, mozilla::ErrorResult& aRv) final override
+ {
+ aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+ }
+
+ void SetY(float aY, mozilla::ErrorResult& aRv) final override
+ {
+ aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+ }
+
+ void SetWidth(float aWidth, mozilla::ErrorResult& aRv) final override
+ {
+ aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+ }
+
+ void SetHeight(float aHeight, mozilla::ErrorResult& aRv) final override
+ {
+ aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+ }
+
+ virtual nsIContent* GetParentObject() const override
+ {
+ return mSVGElement;
+ }
+
+ private:
+ virtual ~DOMAnimVal();
+
+ };
+
+ struct SMILViewBox : public nsISMILAttr
+ {
+ public:
+ SMILViewBox(nsSVGViewBox* aVal, nsSVGElement* aSVGElement)
+ : mVal(aVal), mSVGElement(aSVGElement) {}
+
+ // These will stay alive because a nsISMILAttr only lives as long
+ // as the Compositing step, and DOM elements don't get a chance to
+ // die during that.
+ nsSVGViewBox* mVal;
+ nsSVGElement* mSVGElement;
+
+ // nsISMILAttr methods
+ virtual nsresult ValueFromString(const nsAString& aStr,
+ const mozilla::dom::SVGAnimationElement* aSrcElement,
+ nsSMILValue& aValue,
+ bool& aPreventCachingOfSandwich) const override;
+ virtual nsSMILValue GetBaseValue() const override;
+ virtual void ClearAnimValue() override;
+ virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
+ };
+
+ static nsSVGAttrTearoffTable<nsSVGViewBox, mozilla::dom::SVGAnimatedRect>
+ sSVGAnimatedRectTearoffTable;
+};
+
+#endif // __NS_SVGVIEWBOX_H__