Index: ash/system/night_light/time_of_day.cc |
diff --git a/ash/system/night_light/time_of_day.cc b/ash/system/night_light/time_of_day.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b76ca23dc9bc0d7784035b1fbeca4a40ece4c29e |
--- /dev/null |
+++ b/ash/system/night_light/time_of_day.cc |
@@ -0,0 +1,57 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "ash/system/night_light/time_of_day.h" |
+ |
+#include "base/i18n/time_formatting.h" |
+#include "base/strings/utf_string_conversions.h" |
+ |
+namespace ash { |
+ |
+namespace { |
+ |
+constexpr int kMaxOffsetMinutes = 24 * 60; |
+ |
+} // namespace |
+ |
+TimeOfDay::TimeOfDay(int offset_minutes) |
+ : offset_minutes_from_zero_hour_( |
+ offset_minutes == kMaxOffsetMinutes ? 0 : offset_minutes) { |
+ DCHECK_LE(offset_minutes_from_zero_hour_, kMaxOffsetMinutes); |
+} |
+ |
+// static |
+TimeOfDay TimeOfDay::FromTime(const base::Time& time) { |
+ base::Time::Exploded exploded; |
+ time.LocalExplode(&exploded); |
+ return TimeOfDay(exploded.hour * 60 + exploded.minute); |
+} |
+ |
+bool TimeOfDay::operator==(const TimeOfDay& rhs) const { |
+ return offset_minutes_from_zero_hour_ == rhs.offset_minutes_from_zero_hour_; |
+} |
+ |
+base::Time TimeOfDay::ToTimeToday() const { |
+ base::Time::Exploded now; |
+ base::Time::Now().LocalExplode(&now); |
+ now.hour = (offset_minutes_from_zero_hour_ / 60) % 24; |
+ now.minute = offset_minutes_from_zero_hour_ % 60; |
+ now.second = 0; |
+ now.millisecond = 0; |
+ base::Time result; |
+ if (base::Time::FromLocalExploded(now, &result)) |
+ return result; |
+ |
+ // Daylight saving time can cause FromLocalExploded() to fail on the |
+ // transition day in the spring when TimeOfDay == 2:30 AM, and the time goes |
+ // instantaneously from 1:59 AM 3:00 AM. In this very rare case, it's OK for |
+ // this function to fail. |
+ return base::Time(); |
+} |
+ |
+std::string TimeOfDay::ToString() const { |
+ return base::UTF16ToUTF8(base::TimeFormatTimeOfDay(ToTimeToday())); |
+} |
+ |
+} // namespace ash |