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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /dom/smil/SMILAttr.h | |
parent | Initial commit. (diff) | |
download | firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/smil/SMILAttr.h')
-rw-r--r-- | dom/smil/SMILAttr.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/dom/smil/SMILAttr.h b/dom/smil/SMILAttr.h new file mode 100644 index 0000000000..a67921a9ad --- /dev/null +++ b/dom/smil/SMILAttr.h @@ -0,0 +1,100 @@ +/* -*- 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 DOM_SMIL_SMILATTR_H_ +#define DOM_SMIL_SMILATTR_H_ + +#include "nscore.h" +#include "nsStringFwd.h" + +class nsIContent; + +namespace mozilla { + +class SMILValue; + +namespace dom { +class SVGAnimationElement; +} // namespace dom + +//////////////////////////////////////////////////////////////////////// +// SMILAttr: A variable targeted by SMIL for animation and can therefore have +// an underlying (base) value and an animated value For example, an attribute of +// a particular SVG element. +// +// These objects only exist during the compositing phase of SMIL animation +// calculations. They have a single owner who is responsible for deleting the +// object. + +class SMILAttr { + public: + /** + * Creates a new SMILValue for this attribute from a string. The string is + * parsed in the context of this attribute so that context-dependent values + * such as em-based units can be resolved into a canonical form suitable for + * animation (including interpolation etc.). + * + * @param aStr A string defining the new value to be created. + * @param aSrcElement The source animation element. This may be needed to + * provided additional context data such as for + * animateTransform where the 'type' attribute is needed to + * parse the value. + * @param[out] aValue Outparam for storing the parsed value. + * @param[out] aPreventCachingOfSandwich + * Outparam to indicate whether the attribute contains + * dependencies on its context that should prevent the + * result of the animation sandwich from being cached and + * reused in future samples. + * @return NS_OK on success or an error code if creation failed. + */ + virtual nsresult ValueFromString( + const nsAString& aStr, + const mozilla::dom::SVGAnimationElement* aSrcElement, SMILValue& aValue, + bool& aPreventCachingOfSandwich) const = 0; + + /** + * Gets the underlying value of this attribute. + * + * @return a SMILValue object. returned_object.IsNull() will be true if an + * error occurred. + */ + virtual SMILValue GetBaseValue() const = 0; + + /** + * Clears the animated value of this attribute. + * + * NOTE: The animation target is not guaranteed to be in a document when this + * method is called. (See bug 523188) + */ + virtual void ClearAnimValue() = 0; + + /** + * Sets the presentation value of this attribute. + * + * @param aValue The value to set. + * @return NS_OK on success or an error code if setting failed. + */ + virtual nsresult SetAnimValue(const SMILValue& aValue) = 0; + + /** + * Returns the targeted content node, for any SMILAttr implementations + * that want to expose that to the animation logic. Otherwise, returns + * null. + * + * @return the targeted content node, if this SMILAttr implementation + * wishes to make it avaiable. Otherwise, nullptr. + */ + virtual const nsIContent* GetTargetNode() const { return nullptr; } + + /** + * Virtual destructor, to make sure subclasses can clean themselves up. + */ + virtual ~SMILAttr() = default; +}; + +} // namespace mozilla + +#endif // DOM_SMIL_SMILATTR_H_ |