зеркало из https://github.com/mozilla/gecko-dev.git
63 строки
1.8 KiB
C++
63 строки
1.8 KiB
C++
/* -*- 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_SMILREPEATCOUNT_H_
|
|
#define DOM_SMIL_SMILREPEATCOUNT_H_
|
|
|
|
#include "nsDebug.h"
|
|
#include <math.h>
|
|
|
|
namespace mozilla {
|
|
|
|
//----------------------------------------------------------------------
|
|
// SMILRepeatCount
|
|
//
|
|
// A tri-state non-negative floating point number for representing the number of
|
|
// times an animation repeat, i.e. the SMIL repeatCount attribute.
|
|
//
|
|
// The three states are:
|
|
// 1. not-set
|
|
// 2. set (with non-negative, non-zero count value)
|
|
// 3. indefinite
|
|
//
|
|
class SMILRepeatCount {
|
|
public:
|
|
SMILRepeatCount() : mCount(kNotSet) {}
|
|
explicit SMILRepeatCount(double aCount) : mCount(kNotSet) {
|
|
SetCount(aCount);
|
|
}
|
|
|
|
operator double() const {
|
|
MOZ_ASSERT(IsDefinite(),
|
|
"Converting indefinite or unset repeat count to double");
|
|
return mCount;
|
|
}
|
|
bool IsDefinite() const { return mCount != kNotSet && mCount != kIndefinite; }
|
|
bool IsIndefinite() const { return mCount == kIndefinite; }
|
|
bool IsSet() const { return mCount != kNotSet; }
|
|
|
|
SMILRepeatCount& operator=(double aCount) {
|
|
SetCount(aCount);
|
|
return *this;
|
|
}
|
|
void SetCount(double aCount) {
|
|
NS_ASSERTION(aCount > 0.0, "Negative or zero repeat count");
|
|
mCount = aCount > 0.0 ? aCount : kNotSet;
|
|
}
|
|
void SetIndefinite() { mCount = kIndefinite; }
|
|
void Unset() { mCount = kNotSet; }
|
|
|
|
private:
|
|
static const double kNotSet;
|
|
static const double kIndefinite;
|
|
|
|
double mCount;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // DOM_SMIL_SMILREPEATCOUNT_H_
|