1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "athena/system/time_view.h" 6 7 #include "base/i18n/time_formatting.h" 8 #include "third_party/skia/include/core/SkColor.h" 9 #include "ui/views/border.h" 10 11 namespace athena { 12 namespace { 13 14 // Amount of slop to add into the timer to make sure we're into the next minute 15 // when the timer goes off. 16 const int kTimerSlopSeconds = 1; 17 18 } // namespace 19 20 TimeView::TimeView(SystemUI::ColorScheme color_scheme) { 21 SetHorizontalAlignment(gfx::ALIGN_LEFT); 22 SetEnabledColor((color_scheme == SystemUI::COLOR_SCHEME_LIGHT) 23 ? SK_ColorWHITE 24 : SK_ColorDKGRAY); 25 SetAutoColorReadabilityEnabled(false); 26 SetFontList(gfx::FontList().DeriveWithStyle(gfx::Font::BOLD)); 27 SetSubpixelRenderingEnabled(false); 28 29 const int kHorizontalSpacing = 10; 30 const int kVerticalSpacing = 3; 31 SetBorder(views::Border::CreateEmptyBorder(kVerticalSpacing, 32 kHorizontalSpacing, 33 kVerticalSpacing, 34 kHorizontalSpacing)); 35 36 UpdateText(); 37 } 38 39 TimeView::~TimeView() { 40 } 41 42 void TimeView::SetTimer(base::Time now) { 43 // Try to set the timer to go off at the next change of the minute. We don't 44 // want to have the timer go off more than necessary since that will cause 45 // the CPU to wake up and consume power. 46 base::Time::Exploded exploded; 47 now.LocalExplode(&exploded); 48 49 // Often this will be called at minute boundaries, and we'll actually want 50 // 60 seconds from now. 51 int seconds_left = 60 - exploded.second; 52 if (seconds_left == 0) 53 seconds_left = 60; 54 55 // Make sure that the timer fires on the next minute. Without this, if it is 56 // called just a teeny bit early, then it will skip the next minute. 57 seconds_left += kTimerSlopSeconds; 58 59 timer_.Stop(); 60 timer_.Start( 61 FROM_HERE, base::TimeDelta::FromSeconds(seconds_left), 62 this, &TimeView::UpdateText); 63 } 64 65 void TimeView::UpdateText() { 66 base::Time now = base::Time::Now(); 67 SetText(base::TimeFormatTimeOfDayWithHourClockType( 68 now, base::k12HourClock, base::kKeepAmPm)); 69 SetTimer(now); 70 } 71 72 } // namespace athena 73