rainmeter-studio/Library/MeasureRegistry.cpp

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/*
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "StdAfx.h"
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#include "MeasureRegistry.h"
#include "Rainmeter.h"
#include "Error.h"
/*
** CMeasureRegistry
**
** The constructor
**
*/
CMeasureRegistry::CMeasureRegistry(CMeterWindow* meterWindow) : CMeasure(meterWindow)
{
m_RegKey = NULL;
m_HKey = NULL;
m_MaxValue = 0.0;
}
/*
** ~CMeasureRegistry
**
** The destructor
**
*/
CMeasureRegistry::~CMeasureRegistry()
{
if(m_RegKey) RegCloseKey(m_RegKey);
}
/*
** Update
**
** Gets the current value from the registry
**
*/
bool CMeasureRegistry::Update()
{
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if (!CMeasure::PreUpdate()) return false;
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if(m_RegKey != NULL)
{
DWORD size = 4096;
WCHAR data[4096];
DWORD type = 0;
if(RegQueryValueEx(m_RegKey,
m_RegValueName.c_str(),
NULL,
(LPDWORD)&type,
(LPBYTE)&data,
(LPDWORD)&size) == ERROR_SUCCESS)
{
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switch(type)
{
case REG_DWORD:
m_Value = *((LPDWORD)&data);
m_StringValue.erase();
break;
case REG_SZ:
case REG_EXPAND_SZ:
case REG_MULTI_SZ:
m_Value = 0.0;
m_StringValue = data;
break;
case REG_QWORD:
m_Value = (double)((LARGE_INTEGER*)&data)->QuadPart;
m_StringValue.erase();
break;
default: // Other types are not supported
m_Value = 0.0;
m_StringValue.erase();
}
}
else
{
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m_Value = 0.0;
m_StringValue.erase();
RegOpenKeyEx(m_HKey, m_RegKeyName.c_str(), 0, KEY_READ, &m_RegKey);
}
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}
else
{
RegOpenKeyEx(m_HKey, m_RegKeyName.c_str(), 0, KEY_READ, &m_RegKey);
}
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return PostUpdate();
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}
/*
** ReadConfig
**
** Reads the measure specific configs.
**
*/
void CMeasureRegistry::ReadConfig(CConfigParser& parser, const WCHAR* section)
{
CMeasure::ReadConfig(parser, section);
std::wstring keyname = parser.ReadString(section, L"RegHKey", L"HKEY_CURRENT_USER");
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if(_wcsicmp(keyname.c_str(), L"HKEY_CLASSES_ROOT") == 0)
{
m_HKey = HKEY_CLASSES_ROOT;
}
else if(_wcsicmp(keyname.c_str(), L"HKEY_CURRENT_CONFIG") == 0)
{
m_HKey = HKEY_CURRENT_CONFIG;
}
else if(_wcsicmp(keyname.c_str(), L"HKEY_CURRENT_USER") == 0)
{
m_HKey = HKEY_CURRENT_USER;
}
else if(_wcsicmp(keyname.c_str(), L"HKEY_LOCAL_MACHINE") == 0)
{
m_HKey = HKEY_LOCAL_MACHINE;
}
else if(_wcsicmp(keyname.c_str(), L"HKEY_CLASSES_ROOT") == 0)
{
m_HKey = HKEY_CLASSES_ROOT;
}
else if(_wcsicmp(keyname.c_str(), L"HKEY_PERFORMANCE_DATA") == 0)
{
m_HKey = HKEY_PERFORMANCE_DATA;
}
else if(_wcsicmp(keyname.c_str(), L"HKEY_DYN_DATA") == 0)
{
m_HKey = HKEY_DYN_DATA;
}
else
{
throw CError(std::wstring(L"HKEY=") + keyname + L" is not valid in measure [" + section + L"].", __LINE__, __FILE__);
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}
m_RegKeyName = parser.ReadString(section, L"RegKey", L"");
m_RegValueName = parser.ReadString(section, L"RegValue", L"");
if (m_MaxValue == 0.0)
{
m_MaxValue = 1.0;
m_LogMaxValue = true;
}
// Try to open the key
if(m_RegKey) RegCloseKey(m_RegKey);
RegOpenKeyEx(m_HKey, m_RegKeyName.c_str(), 0, KEY_READ, &m_RegKey);
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}
/*
** GetStringValue
**
** If the measured registry value is a string display it. Otherwise convert the
** value to string as normal.
**
*/
const WCHAR* CMeasureRegistry::GetStringValue(bool autoScale, double scale, int decimals, bool percentual)
{
if (m_StringValue.empty())
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{
return CMeasure::GetStringValue(autoScale, scale, decimals, percentual);
}
return CheckSubstitute(m_StringValue.c_str());
}