rainmeter-studio/Library/MeasurePlugin.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 "MeasurePlugin.h"
#include "Rainmeter.h"
#include "System.h"
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#include "Error.h"
extern CRainmeter* Rainmeter;
/*
** CMeasureMemory
**
** The constructor
**
*/
CMeasurePlugin::CMeasurePlugin(CMeterWindow* meterWindow) : CMeasure(meterWindow)
{
m_Plugin = NULL;
m_ID = 0;
m_MaxValue = 0;
InitializeFunc = NULL;
UpdateFunc = NULL;
UpdateFunc2 = NULL;
FinalizeFunc = NULL;
GetStringFunc = NULL;
ExecuteBangFunc = NULL;
}
/*
** ~CMeasureMemory
**
** The destructor
**
*/
CMeasurePlugin::~CMeasurePlugin()
{
if (m_Plugin)
{
if(FinalizeFunc) FinalizeFunc(m_Plugin, m_ID);
FreeLibrary(m_Plugin);
}
}
/*
** Update
**
** Gets the current value from the plugin
**
*/
bool CMeasurePlugin::Update()
{
if (!CMeasure::PreUpdate()) return false;
WCHAR buffer[MAX_PATH];
GetCurrentDirectory(MAX_PATH, buffer);
SetCurrentDirectory((Rainmeter->GetSkinPath() + m_MeterWindow->GetSkinName()).c_str());
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if(UpdateFunc)
{
// Update the plugin
m_Value = UpdateFunc(m_ID);
}
else if(UpdateFunc2)
{
// Update the plugin
m_Value = UpdateFunc2(m_ID);
}
SetCurrentDirectory(buffer);
return PostUpdate();
}
/*
** ReadConfig
**
** Reads the configs and loads & initializes the plugin
**
*/
void CMeasurePlugin::ReadConfig(CConfigParser& parser, const WCHAR* section)
{
static UINT id = 1;
CMeasure::ReadConfig(parser, section);
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// DynamicVariables is now disabled in MeasurePlugin due to a limitation of the re-initialization.
// Do not set m_DynamicVariables to "true".
m_DynamicVariables = false;
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m_PluginName = parser.ReadString(section, L"Plugin", L"");
size_t pos = m_PluginName.rfind(L".");
if (pos == std::wstring::npos)
{
m_PluginName += L".dll";
}
pos = m_PluginName.rfind(L'\\');
if (pos != std::wstring::npos)
{
m_PluginName = L"..\\" + m_PluginName;
}
m_PluginName = Rainmeter->GetPluginPath() + m_PluginName;
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DWORD err = 0;
m_Plugin = CSystem::RmLoadLibrary(m_PluginName.c_str(), &err);
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if(m_Plugin == NULL)
{
if (CRainmeter::GetDebug())
{
DebugLog(L"Plugin: Unable to load plugin: \"%s\", ErrorCode=%i", m_PluginName.c_str(), err);
}
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// Try to load from Rainmeter's folder
pos = m_PluginName.rfind(L'\\');
if (pos != std::wstring::npos)
{
std::wstring pluginName = Rainmeter->GetPath() + m_PluginName.substr(pos + 1);
err = 0;
m_Plugin = CSystem::RmLoadLibrary(pluginName.c_str(), &err);
if (m_Plugin == NULL)
{
if (CRainmeter::GetDebug())
{
DebugLog(L"Plugin: Unable to load plugin: \"%s\", ErrorCode=%i", pluginName.c_str(), err);
}
}
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}
if (m_Plugin == NULL)
{
throw CError(std::wstring(L"Rainmeter plugin ") + m_PluginName + L" not found!", __LINE__, __FILE__);
}
}
InitializeFunc = (INITIALIZE)GetProcAddress(m_Plugin, "Initialize");
FinalizeFunc = (FINALIZE)GetProcAddress(m_Plugin, "Finalize");
UpdateFunc = (UPDATE)GetProcAddress(m_Plugin, "Update");
UpdateFunc2 = (UPDATE2)GetProcAddress(m_Plugin, "Update2");
GetStringFunc = (GETSTRING)GetProcAddress(m_Plugin, "GetString");
ExecuteBangFunc = (EXECUTEBANG)GetProcAddress(m_Plugin, "ExecuteBang");
if (UpdateFunc == NULL && UpdateFunc2 == NULL && GetStringFunc == NULL)
{
FreeLibrary(m_Plugin);
throw CError(std::wstring(L"Rainmeter plugin ") + m_PluginName + L" doesn't export Update or GetString function!", __LINE__, __FILE__);
}
// Initialize the plugin
m_ID = id++;
if(InitializeFunc)
{
WCHAR buffer[MAX_PATH];
GetCurrentDirectory(MAX_PATH, buffer);
SetCurrentDirectory((Rainmeter->GetSkinPath() + m_MeterWindow->GetSkinName()).c_str());
// Remove current directory from DLL search path
CSystem::RmSetDllDirectory(L"");
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double maxValue;
maxValue = InitializeFunc(m_Plugin, parser.GetFilename().c_str(), section, m_ID);
SetCurrentDirectory(buffer);
std::wstring szMaxValue = parser.ReadString(section, L"MaxValue", L"NotSet");
if (szMaxValue == L"NotSet")
{
m_MaxValue = maxValue;
}
}
if(m_MaxValue == 0)
{
m_MaxValue = 1;
m_LogMaxValue = true;
}
}
/*
** GetStringValue
**
** Gets the string value from the plugin.
**
*/
const WCHAR* CMeasurePlugin::GetStringValue(bool autoScale, double scale, int decimals, bool percentual)
{
if(GetStringFunc)
{
const WCHAR* ret = GetStringFunc(m_ID, 0);
if (ret) return CheckSubstitute(ret);
}
return CMeasure::GetStringValue(autoScale, scale, decimals, percentual);
}
/*
** ExecuteBang
**
** Sends a bang to the plugin
**
*/
void CMeasurePlugin::ExecuteBang(const WCHAR* args)
{
if (ExecuteBangFunc)
{
ExecuteBangFunc(args, m_ID);
}
else
{
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DebugLog(L"[%s] doesn't support bangs.", m_Name.c_str());
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}
}