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/////////////////////////////////////////////////////////////////////////////
// Name: power.cpp
// Purpose: wxWidgets power management sample
// Author: Vadim Zeitlin
// Created: 2006-05-27
// Copyright: (C) 2006 Vadim Zeitlin <vadim@wxwindows.org>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/frame.h"
#include "wx/log.h"
#endif
#include "wx/textctrl.h"
#include "wx/msgdlg.h"
#include "wx/power.h"
#ifndef wxHAS_IMAGES_IN_RESOURCES
#include "../sample.xpm"
#endif
// ----------------------------------------------------------------------------
// main frame class
// ----------------------------------------------------------------------------
class MyFrame : public wxFrame
{
public:
MyFrame()
: wxFrame(NULL, wxID_ANY, wxT("wxWidgets Power Management Sample"),
wxDefaultPosition, wxSize(500, 200))
{
wxTextCtrl *text = new wxTextCtrl(this, wxID_ANY, wxT(""),
wxDefaultPosition, wxDefaultSize,
wxTE_MULTILINE | wxTE_READONLY);
m_logOld = wxLog::SetActiveTarget(new wxLogTextCtrl(text));
CreateStatusBar();
SetIcon(wxICON(sample));
UpdatePowerSettings(wxPOWER_UNKNOWN, wxBATTERY_UNKNOWN_STATE);
Show();
}
virtual ~MyFrame()
{
delete wxLog::SetActiveTarget(m_logOld);
}
private:
void OnIdle(wxIdleEvent& WXUNUSED(event))
{
const wxPowerType powerType = wxGetPowerType();
const wxBatteryState batteryState = wxGetBatteryState();
if ( powerType != m_powerType || batteryState != m_batteryState )
{
UpdatePowerSettings(powerType, batteryState);
}
}
#ifdef wxHAS_POWER_EVENTS
void OnSuspending(wxPowerEvent& event)
{
wxLogMessage(wxT("System suspend starting..."));
if ( wxMessageBox(wxT("Veto suspend?"), wxT("Please answer"),
wxYES_NO, this) == wxYES )
{
event.Veto();
wxLogMessage(wxT("Vetoed suspend."));
}
}
void OnSuspended(wxPowerEvent& WXUNUSED(event))
{
wxLogMessage(wxT("System is going to suspend."));
}
void OnSuspendCancel(wxPowerEvent& WXUNUSED(event))
{
wxLogMessage(wxT("System suspend was cancelled."));
}
void OnResume(wxPowerEvent& WXUNUSED(event))
{
wxLogMessage(wxT("System resumed from suspend."));
}
#endif // wxHAS_POWER_EVENTS
void UpdatePowerSettings(wxPowerType powerType, wxBatteryState batteryState)
{
wxString powerStr;
switch ( m_powerType = powerType )
{
case wxPOWER_SOCKET:
powerStr = wxT("wall");
break;
case wxPOWER_BATTERY:
powerStr = wxT("battery");
break;
default:
wxFAIL_MSG(wxT("unknown wxPowerType value"));
// fall through
case wxPOWER_UNKNOWN:
powerStr = wxT("psychic");
break;
}
wxString batteryStr;
switch ( m_batteryState = batteryState )
{
case wxBATTERY_NORMAL_STATE:
batteryStr = wxT("charged");
break;
case wxBATTERY_LOW_STATE:
batteryStr = wxT("low");
break;
case wxBATTERY_CRITICAL_STATE:
batteryStr = wxT("critical");
break;
case wxBATTERY_SHUTDOWN_STATE:
batteryStr = wxT("empty");
break;
default:
wxFAIL_MSG(wxT("unknown wxBatteryState value"));
// fall through
case wxBATTERY_UNKNOWN_STATE:
batteryStr = wxT("unknown");
break;
}
SetStatusText(wxString::Format(
wxT("System is on %s power, battery state is %s"),
powerStr.c_str(),
batteryStr.c_str()));
}
wxPowerType m_powerType;
wxBatteryState m_batteryState;
wxLog *m_logOld;
wxDECLARE_EVENT_TABLE();
};
wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_IDLE(MyFrame::OnIdle)
#ifdef wxHAS_POWER_EVENTS
EVT_POWER_SUSPENDING(MyFrame::OnSuspending)
EVT_POWER_SUSPENDED(MyFrame::OnSuspended)
EVT_POWER_SUSPEND_CANCEL(MyFrame::OnSuspendCancel)
EVT_POWER_RESUME(MyFrame::OnResume)
#endif // wxHAS_POWER_EVENTS
wxEND_EVENT_TABLE()
// ----------------------------------------------------------------------------
// main application class
// ----------------------------------------------------------------------------
class MyApp : public wxApp
{
public:
virtual bool OnInit()
{
new MyFrame;
return true;
}
};
IMPLEMENT_APP(MyApp)
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