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