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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/geometry/layout_unit.h"
#include <ostream>
#include "third_party/blink/renderer/platform/wtf/text/strcat.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
namespace {
template <unsigned fractional_bits, typename Storage>
String FromLayoutUnit(FixedPoint<fractional_bits, Storage> value) {
// Request full precision, avoid scientific notation. 14 is just enough for a
// LayoutUnit (8 for the integer part (we can represent just above 30
// million), plus 6 for the fractional part (1/64)).
return String::Number(value.ToDouble(), 14);
}
} // anonymous namespace
template <unsigned fractional_bits, typename Storage>
String FixedPoint<fractional_bits, Storage>::ToString() const {
if (value_ == Max().RawValue()) {
return StrCat({"Max(", FromLayoutUnit(*this), ")"});
}
if (value_ == Min().RawValue()) {
return StrCat({"Min(", FromLayoutUnit(*this), ")"});
}
if (value_ == NearlyMax().RawValue()) {
return StrCat({"NearlyMax(", FromLayoutUnit(*this), ")"});
}
if (value_ == NearlyMin().RawValue()) {
return StrCat({"NearlyMin(", FromLayoutUnit(*this), ")"});
}
return FromLayoutUnit(*this);
}
template <unsigned fractional_bits, typename Storage>
std::ostream& operator<<(std::ostream& stream,
const FixedPoint<fractional_bits, Storage>& value) {
return stream << value.ToString().Utf8();
}
// Explicit instantiations.
#define INSTANTIATE(fractional_bits, Storage) \
template class FixedPoint<fractional_bits, Storage>; \
template std::ostream& operator<<( \
std::ostream&, const FixedPoint<fractional_bits, Storage>&)
INSTANTIATE(6, int32_t);
INSTANTIATE(16, int32_t);
INSTANTIATE(16, int64_t);
} // namespace blink
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