gecko/content/smil/nsSMILSetAnimationFunction.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Mozilla SMIL module.
*
* The Initial Developer of the Original Code is Brian Birtles.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian Birtles <birtles@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsSMILSetAnimationFunction.h"
inline PRBool
nsSMILSetAnimationFunction::IsDisallowedAttribute(
const nsIAtom* aAttribute) const
{
//
// A <set> element is similar to <animate> but lacks:
// AnimationValue.attrib(calcMode, values, keyTimes, keySplines, from, to,
// by) -- BUT has 'to'
// AnimationAddition.attrib(additive, accumulate)
//
if (aAttribute == nsGkAtoms::calcMode ||
aAttribute == nsGkAtoms::values ||
aAttribute == nsGkAtoms::keyTimes ||
aAttribute == nsGkAtoms::keySplines ||
aAttribute == nsGkAtoms::from ||
aAttribute == nsGkAtoms::by ||
aAttribute == nsGkAtoms::additive ||
aAttribute == nsGkAtoms::accumulate) {
return PR_TRUE;
}
return PR_FALSE;
}
PRBool
nsSMILSetAnimationFunction::SetAttr(nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult,
nsresult* aParseResult)
{
if (IsDisallowedAttribute(aAttribute)) {
aResult.SetTo(aValue);
if (aParseResult) {
// SMILANIM 4.2 says:
//
// The additive and accumulate attributes are not allowed, and will be
// ignored if specified.
//
// So at least for those two attributes we shouldn't report an error even
// if they're present. For now we'll also just silently ignore other
// attribute types too.
*aParseResult = NS_OK;
}
return PR_TRUE;
}
return nsSMILAnimationFunction::SetAttr(aAttribute, aValue,
aResult, aParseResult);
}
PRBool
nsSMILSetAnimationFunction::UnsetAttr(nsIAtom* aAttribute)
{
if (IsDisallowedAttribute(aAttribute)) {
return PR_TRUE;
}
return nsSMILAnimationFunction::UnsetAttr(aAttribute);
}
nsresult
nsSMILSetAnimationFunction::InterpolateResult(const nsSMILValueArray& aValues,
nsSMILValue& aResult,
nsSMILValue& aBaseValue)
{
// Sanity Checks
const nsSMILTime& dur = mSimpleDuration.GetMillis();
NS_ABORT_IF_FALSE(mSampleTime >= 0.0f, "Sample time should not be negative");
NS_ABORT_IF_FALSE(dur >= 0.0f, "Simple duration should not be negative");
NS_ABORT_IF_FALSE(IsToAnimation(), "Set element only supports to-animation");
if (mSampleTime >= dur || mSampleTime < 0) {
NS_ERROR("Animation sampled outside interval.");
return NS_ERROR_FAILURE;
}
if (aValues.Length() != 1) {
NS_ERROR("Unexpected number of values.");
return NS_ERROR_FAILURE;
}
// End Sanity Checks
// Always use the 'to' value (which should be first & only elem in |aValues|)
aResult = aValues[0];
return NS_OK;
}
PRBool
nsSMILSetAnimationFunction::HasAttr(nsIAtom* aAttName) const
{
if (IsDisallowedAttribute(aAttName))
return PR_FALSE;
return nsSMILAnimationFunction::HasAttr(aAttName);
}
const nsAttrValue*
nsSMILSetAnimationFunction::GetAttr(nsIAtom* aAttName) const
{
if (IsDisallowedAttribute(aAttName))
return nsnull;
return nsSMILAnimationFunction::GetAttr(aAttName);
}
PRBool
nsSMILSetAnimationFunction::GetAttr(nsIAtom* aAttName,
nsAString& aResult) const
{
if (IsDisallowedAttribute(aAttName))
return nsnull;
return nsSMILAnimationFunction::GetAttr(aAttName, aResult);
}