rainmeter-studio/Library/MeasureTime.cpp
2012-08-29 12:02:00 -07:00

283 lines
7.0 KiB
C++

/*
Copyright (C) 2001 Kimmo Pekkola
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "StdAfx.h"
#include "MeasureTime.h"
#include "Rainmeter.h"
int GetYearDay(int year, int month, int day)
{
static const int dates[] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
int yearDay = dates[month - 1] + day;
if (month > 2 && ((((year % 4) == 0) && ((year % 100) != 0)) || (year % 400) == 0))
{
++yearDay;
}
return yearDay - 1;
}
/*
** The constructor
**
*/
CMeasureTime::CMeasureTime(CMeterWindow* meterWindow, const WCHAR* name) : CMeasure(meterWindow, name),
m_DeltaTime(),
m_Time(),
m_TimeStamp(-1)
{
/* Set time zone from TZ environment variable. If TZ is not set,
* the operating system is queried to obtain the default value
* for the variable.
*/
_tzset();
}
/*
** The destructor
**
*/
CMeasureTime::~CMeasureTime()
{
}
/*
** Converts given time to string.
** This function is a wrapper function for wcsftime.
**
*/
void CMeasureTime::TimeToString(WCHAR* buf, size_t bufLen, const WCHAR* format, const struct tm* time)
{
if (bufLen > 0)
{
_invalid_parameter_handler oldHandler = _set_invalid_parameter_handler(RmNullCRTInvalidParameterHandler);
_CrtSetReportMode(_CRT_ASSERT, 0);
errno = 0;
wcsftime(buf, bufLen, format, time);
if (errno == EINVAL)
{
LogWithArgs(LOG_ERROR, L"Time: \"Format=%s\" invalid in [%s]", format, m_Name.c_str());
buf[0] = 0;
}
_set_invalid_parameter_handler(oldHandler);
}
}
void CMeasureTime::FillCurrentTime()
{
if (m_TimeStamp < 0.0)
{
FILETIME ftUTCTime;
GetSystemTimeAsFileTime(&ftUTCTime);
// Modify the ltime to match the current timezone
// This way we can use the value also for the clock
m_Time.HighPart = ftUTCTime.dwHighDateTime;
m_Time.LowPart = ftUTCTime.dwLowDateTime;
m_Time.QuadPart += m_DeltaTime.QuadPart;
}
else
{
m_Time.QuadPart = (LONGLONG)(m_TimeStamp * 10000000);
}
}
/*
** Updates the current time
**
*/
void CMeasureTime::UpdateValue()
{
FillCurrentTime();
if (!m_Format.empty())
{
// If there is some date format, parse the value from it instead
WCHAR* tmpSz = new WCHAR[MAX_LINE_LENGTH];
SYSTEMTIME sysToday;
FILETIME ftToday;
tmpSz[0] = 0;
ftToday.dwHighDateTime = m_Time.HighPart;
ftToday.dwLowDateTime = m_Time.LowPart;
FileTimeToSystemTime(&ftToday, &sysToday);
const WCHAR* format = m_Format.c_str();
if (_wcsicmp(L"locale-time", format) == 0)
{
GetTimeFormat(LOCALE_USER_DEFAULT, 0, &sysToday, NULL, tmpSz, MAX_LINE_LENGTH);
}
else if (_wcsicmp(L"locale-date", format) == 0)
{
GetDateFormat(LOCALE_USER_DEFAULT, 0, &sysToday, NULL, tmpSz, MAX_LINE_LENGTH);
}
else
{
struct tm today;
today.tm_isdst = 0;
today.tm_hour = sysToday.wHour;
today.tm_mday = sysToday.wDay;
today.tm_min = sysToday.wMinute;
today.tm_mon = sysToday.wMonth - 1;
today.tm_sec = sysToday.wSecond;
today.tm_wday = sysToday.wDayOfWeek;
today.tm_yday = GetYearDay(sysToday.wYear, sysToday.wMonth, sysToday.wDay);
today.tm_year = sysToday.wYear - 1900;
TimeToString(tmpSz, MAX_LINE_LENGTH, format, &today);
}
m_Value = wcstod(tmpSz, NULL);
delete [] tmpSz;
}
else
{
m_Value = (double)(m_Time.QuadPart / 10000000);
}
}
/*
** Returns the time as string.
**
*/
const WCHAR* CMeasureTime::GetStringValue(AUTOSCALE autoScale, double scale, int decimals, bool percentual)
{
static WCHAR tmpSz[MAX_LINE_LENGTH];
struct tm today;
tmpSz[0] = 0;
SYSTEMTIME sysToday;
FILETIME ftToday;
ftToday.dwHighDateTime = m_Time.HighPart;
ftToday.dwLowDateTime = m_Time.LowPart;
FileTimeToSystemTime(&ftToday, &sysToday);
today.tm_isdst = 0;
today.tm_hour = sysToday.wHour;
today.tm_mday = sysToday.wDay;
today.tm_min = sysToday.wMinute;
today.tm_mon = sysToday.wMonth - 1;
today.tm_sec = sysToday.wSecond;
today.tm_wday = sysToday.wDayOfWeek;
today.tm_yday = GetYearDay(sysToday.wYear, sysToday.wMonth, sysToday.wDay);
today.tm_year = sysToday.wYear - 1900;
// Create the string
if (!m_Format.empty())
{
const WCHAR* format = m_Format.c_str();
if (_wcsicmp(L"locale-time", format) == 0)
{
GetTimeFormat(LOCALE_USER_DEFAULT, 0, &sysToday, NULL, tmpSz, MAX_LINE_LENGTH);
}
else if (_wcsicmp(L"locale-date", format) == 0)
{
GetDateFormat(LOCALE_USER_DEFAULT, 0, &sysToday, NULL, tmpSz, MAX_LINE_LENGTH);
}
else
{
TimeToString(tmpSz, MAX_LINE_LENGTH, format, &today);
}
}
else
{
TimeToString(tmpSz, MAX_LINE_LENGTH, L"%H:%M:%S", &today);
}
return CheckSubstitute(tmpSz);
}
/*
** Read the options specified in the ini file.
**
*/
void CMeasureTime::ReadOptions(CConfigParser& parser, const WCHAR* section)
{
CMeasure::ReadOptions(parser, section);
m_Format = parser.ReadString(section, L"Format", L"");
m_TimeStamp = parser.ReadFloat(section, L"TimeStamp", -1);
if (m_TimeStamp < 0.0)
{
const WCHAR* timezone = parser.ReadString(section, L"TimeZone", L"local").c_str();
if (_wcsicmp(L"local", timezone) == 0)
{
SYSTEMTIME sysLocalTime, sysUTCTime;
GetLocalTime(&sysLocalTime);
GetSystemTime(&sysUTCTime);
FILETIME ftLocalTime, ftUTCTime;
SystemTimeToFileTime(&sysLocalTime, &ftLocalTime);
SystemTimeToFileTime(&sysUTCTime, &ftUTCTime);
LARGE_INTEGER largeInt1, largeInt2;
largeInt1.HighPart = ftLocalTime.dwHighDateTime;
largeInt1.LowPart = ftLocalTime.dwLowDateTime;
largeInt2.HighPart = ftUTCTime.dwHighDateTime;
largeInt2.LowPart = ftUTCTime.dwLowDateTime;
m_DeltaTime.QuadPart = largeInt1.QuadPart - largeInt2.QuadPart;
}
else
{
double zone = wcstod(timezone, NULL);
bool dst = 1 == parser.ReadInt(section, L"DaylightSavingTime", 1);
struct tm* today;
time_t now;
time(&now);
today = localtime(&now);
if (dst && today->tm_isdst)
{
// Add DST
TIME_ZONE_INFORMATION tzi;
GetTimeZoneInformation(&tzi);
m_DeltaTime.QuadPart = (LONGLONG)((zone * 3600) - tzi.DaylightBias * 60) * 10000000;
}
else
{
m_DeltaTime.QuadPart = (LONGLONG)(zone * 3600) * 10000000;
}
}
}
else
{
m_DeltaTime.QuadPart = 0;
}
if (!m_Initialized)
{
// Initialize m_Time to avoid causing EINVAL in TimeToString() until calling UpdateValue()
FillCurrentTime();
}
}