rainmeter-studio/Library/MeasurePlugin.cpp
2012-02-20 19:10:40 +00:00

282 lines
5.8 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 "MeasurePlugin.h"
#include "Rainmeter.h"
#include "Export.h"
#include "System.h"
#include "Error.h"
extern CRainmeter* Rainmeter;
/*
** The constructor
**
*/
CMeasurePlugin::CMeasurePlugin(CMeterWindow* meterWindow, const WCHAR* name) : CMeasure(meterWindow, name),
m_Plugin(),
m_ReloadFunc(),
m_ID(),
m_Update2(false),
m_PluginData(),
m_UpdateFunc(),
m_GetStringFunc(),
m_ExecuteBangFunc()
{
m_MaxValue = 0.0;
}
/*
** The destructor
**
*/
CMeasurePlugin::~CMeasurePlugin()
{
if (m_Plugin)
{
FARPROC finalizeFunc = GetProcAddress(m_Plugin, "Finalize");
if (finalizeFunc)
{
if (IsNewApi())
{
((NEWFINALIZE)finalizeFunc)(m_PluginData);
}
else
{
((FINALIZE)finalizeFunc)(m_Plugin, m_ID);
}
}
FreeLibrary(m_Plugin);
}
}
/*
** Gets the current value from the plugin
**
*/
bool CMeasurePlugin::Update()
{
if (!CMeasure::PreUpdate()) return false;
if (m_UpdateFunc)
{
if (IsNewApi())
{
m_Value = ((NEWUPDATE)m_UpdateFunc)(m_PluginData);
}
else
{
if (m_Update2)
{
m_Value = ((UPDATE2)m_UpdateFunc)(m_ID);
}
else
{
m_Value = ((UPDATE)m_UpdateFunc)(m_ID);
}
}
// Reset to default
CSystem::ResetWorkingDirectory();
}
return PostUpdate();
}
/*
** Reads the configs and loads & initializes the plugin
**
*/
void CMeasurePlugin::ReadConfig(CConfigParser& parser, const WCHAR* section)
{
static UINT id = 0;
CMeasure::ReadConfig(parser, section);
if (m_Initialized)
{
if (IsNewApi())
{
((NEWRELOAD)m_ReloadFunc)(m_PluginData, this, &m_MaxValue);
}
// DynamicVariables doesn't work with old plugins
return;
}
std::wstring pluginName = parser.ReadString(section, L"Plugin", L"");
size_t pos = pluginName.rfind(L'.');
if (pos == std::wstring::npos)
{
pluginName += L".dll";
}
pos = pluginName.rfind(L'\\');
if (pos != std::wstring::npos)
{
pluginName.insert(0, L"..\\");
}
pluginName.insert(0, Rainmeter->GetPluginPath());
// Canonicalize the path (Workaround for C# plugins)
{
pos = 0;
while ((pos = pluginName.find(L"\\\\", pos)) != std::wstring::npos)
{
pluginName.erase(pos, 1);
}
WCHAR buffer[MAX_PATH];
if (PathCanonicalize(buffer, pluginName.c_str()))
{
pluginName = buffer;
}
else
{
LogWithArgs(LOG_WARNING, L"Plugin: Failed to canonicalize plugin path: %s", pluginName.c_str());
}
}
m_Plugin = CSystem::RmLoadLibrary(pluginName.c_str());
if (m_Plugin == NULL)
{
// Try to load from Rainmeter's folder
pos = pluginName.rfind(L'\\');
if (pos != std::wstring::npos)
{
std::wstring pluginName2 = Rainmeter->GetPath();
pluginName2.append(pluginName, pos + 1, pluginName.length() - (pos + 1));
m_Plugin = CSystem::RmLoadLibrary(pluginName2.c_str());
}
if (m_Plugin == NULL)
{
std::wstring error = L"Plugin: \"" + pluginName;
error += L"\" not found";
throw CError(error);
}
}
FARPROC initializeFunc = GetProcAddress(m_Plugin, "Initialize");
m_ReloadFunc = GetProcAddress(m_Plugin, "Reload");
m_UpdateFunc = GetProcAddress(m_Plugin, "Update");
m_GetStringFunc = GetProcAddress(m_Plugin, "GetString");
m_ExecuteBangFunc = GetProcAddress(m_Plugin, "ExecuteBang");
// Remove current directory from DLL search path
SetDllDirectory(L"");
if (IsNewApi())
{
m_PluginData = (void*)id;
if (initializeFunc)
{
((NEWINITIALIZE)initializeFunc)(&m_PluginData, this);
}
((NEWRELOAD)m_ReloadFunc)(m_PluginData, this, &m_MaxValue);
}
else
{
m_ID = id;
if (!m_UpdateFunc)
{
m_UpdateFunc = GetProcAddress(m_Plugin, "Update2");
m_Update2 = true;
}
double maxValue = 0;
if (initializeFunc)
{
maxValue = ((INITIALIZE)initializeFunc)(m_Plugin, parser.GetFilename().c_str(), section, m_ID);
}
const std::wstring& szMaxValue = parser.ReadString(section, L"MaxValue", L"");
if (szMaxValue.empty())
{
m_MaxValue = maxValue;
}
if (m_MaxValue == 0)
{
m_MaxValue = 1;
m_LogMaxValue = true;
}
}
// Reset to default
SetDllDirectory(L"");
CSystem::ResetWorkingDirectory();
++id;
}
/*
** Gets the string value from the plugin.
**
*/
const WCHAR* CMeasurePlugin::GetStringValue(AUTOSCALE autoScale, double scale, int decimals, bool percentual)
{
if (m_GetStringFunc)
{
const WCHAR* ret;
if (IsNewApi())
{
ret = ((NEWGETSTRING)m_GetStringFunc)(m_PluginData);
}
else
{
ret = ((GETSTRING)m_GetStringFunc)(m_ID, 0);
}
if (ret) return CheckSubstitute(ret);
}
return CMeasure::GetStringValue(autoScale, scale, decimals, percentual);
}
/*
** Sends a bang to the plugin
**
*/
void CMeasurePlugin::Command(const std::wstring& command)
{
if (m_ExecuteBangFunc)
{
const WCHAR* str = command.c_str();
if (IsNewApi())
{
((NEWEXECUTEBANG)m_ExecuteBangFunc)(m_PluginData, str);
}
else
{
((EXECUTEBANG)m_ExecuteBangFunc)(str, m_ID);
}
}
else
{
CMeasure::Command(command);
}
}