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[wxWidgets.git] / samples / keyboard / keyboard.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        keyboard.cpp
// Purpose:     Keyboard wxWidgets sample
// Author:      Vadim Zeitlin
// Modified by:
// Created:     07.04.02
// RCS-ID:      $Id$
// Copyright:   (c) 2002 Vadim Zeitlin
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWidgets headers)
#ifndef WX_PRECOMP
    #include "wx/wx.h"
#endif

#if !wxUSE_LOG
#   error You must set wxUSE_LOG to 1 in setup.h
#endif

// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------

// Define a new application type, each program should derive a class from wxApp
class MyApp : public wxApp
{
public:
    // override base class virtuals
    // ----------------------------

    // this one is called on application startup and is a good place for the app
    // initialization (doing it here and not in the ctor allows to have an error
    // return: if OnInit() returns false, the application terminates)
    virtual bool OnInit();
};

// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
public:
    // ctor(s)
    MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size,
            long style = wxDEFAULT_FRAME_STYLE);

    ~MyFrame() { delete m_logTarget; }

    // event handlers (these functions should _not_ be virtual)
    void OnQuit(wxCommandEvent& event);
    void OnAbout(wxCommandEvent& event);
    void OnClear(wxCommandEvent& event);
    void OnSkip(wxCommandEvent& event);
    void OnShowRaw(wxCommandEvent& event);

    void OnSize(wxSizeEvent& event);

private:
    wxLog *m_logTarget;

    class TextWindow *m_winText;
    wxListBox *m_lboxLog;

    // any class wishing to process wxWidgets events must use this macro
    DECLARE_EVENT_TABLE()
};

// A log target which just redirects the messages to a listbox
class LboxLogger : public wxLog
{
public:
    LboxLogger(wxListBox *lbox, wxLog *logOld)
    {
        m_lbox = lbox;
        //m_lbox->Disable(); -- looks ugly under MSW
        m_logOld = logOld;
    }

    virtual ~LboxLogger()
    {
        wxLog::SetActiveTarget(m_logOld);
    }

private:
    // implement sink functions
    virtual void DoLog(wxLogLevel level, const wxString& szString, time_t t)
    {
        // don't put trace messages into listbox or we can get into infinite
        // recursion
        if ( level == wxLOG_Trace )
        {
            if ( m_logOld )
            {
                // cast is needed to call protected method
                ((LboxLogger *)m_logOld)->DoLog(level, szString, t);
            }
        }
        else
        {
            wxLog::DoLog(level, szString, t);
        }
    }

    virtual void DoLogString(const wxChar *szString, time_t WXUNUSED(t))
    {
        wxString msg;
        TimeStamp(&msg);
        msg += szString;

        #ifdef __WXUNIVERSAL__
            m_lbox->AppendAndEnsureVisible(msg);
        #else // other ports don't have this method yet
            m_lbox->Append(msg);
            m_lbox->SetFirstItem(m_lbox->GetCount() - 1);
        #endif
    }

    // the control we use
    wxListBox *m_lbox;

    // the old log target
    wxLog *m_logOld;
};

class TextWindow : public wxWindow
{
public:
    TextWindow(wxWindow *parent)
        : wxWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize,
                   wxRAISED_BORDER)
    {
        m_skip = true;
        m_showRaw = false;

        SetBackgroundColour(*wxBLUE);
    }

    void SetSkip(bool skip) { m_skip = skip; }
    void SetShowRaw(bool show) { m_showRaw = show; }

protected:
    void OnKeyDown(wxKeyEvent& event) { LogEvent(_T("Key down"), event); }
    void OnKeyUp(wxKeyEvent& event) { LogEvent(_T("Key up"), event); }
    void OnChar(wxKeyEvent& event) { LogEvent(_T("Char"), event); }

    void OnPaint(wxPaintEvent& WXUNUSED(event))
    {
        wxPaintDC dc(this);
        dc.SetTextForeground(*wxWHITE);
        wxFont font(*wxSWISS_FONT);
        font.SetWeight(wxFONTWEIGHT_BOLD);
        font.SetPointSize(font.GetPointSize() + 2);
        dc.SetFont(font);

        dc.DrawLabel(_T("Press keys here"), GetClientRect(), wxALIGN_CENTER);
    }

private:
    static inline wxChar GetChar(bool on, wxChar c) { return on ? c : _T('-'); }

    void LogEvent(const wxChar *name, wxKeyEvent& event);

    bool m_skip;
    bool m_showRaw;

    DECLARE_EVENT_TABLE()
};

BEGIN_EVENT_TABLE(TextWindow, wxWindow)
    EVT_KEY_DOWN(TextWindow::OnKeyDown)
    EVT_KEY_UP(TextWindow::OnKeyUp)
    EVT_CHAR(TextWindow::OnChar)

    EVT_PAINT(TextWindow::OnPaint)
END_EVENT_TABLE()

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

// IDs for the controls and the menu commands
enum
{
    // menu items
    Keyboard_Quit = 1,

    Keyboard_Clear,
    Keyboard_Skip,
    Keyboard_ShowRaw,

    // it is important for the id corresponding to the "About" command to have
    // this standard value as otherwise it won't be handled properly under Mac
    // (where it is special and put into the "Apple" menu)
    Keyboard_About = wxID_ABOUT
};

// ----------------------------------------------------------------------------
// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------

// the event tables connect the wxWidgets events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
    EVT_MENU(Keyboard_Quit,  MyFrame::OnQuit)
    EVT_MENU(Keyboard_About, MyFrame::OnAbout)

    EVT_MENU(Keyboard_Clear, MyFrame::OnClear)
    EVT_MENU(Keyboard_Skip, MyFrame::OnSkip)
    EVT_MENU(Keyboard_ShowRaw, MyFrame::OnShowRaw)

    EVT_SIZE(MyFrame::OnSize)
END_EVENT_TABLE()

// Create a new application object: this macro will allow wxWidgets to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. MyApp and
// not wxApp)
IMPLEMENT_APP(MyApp)

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------

// 'Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
    if ( !wxApp::OnInit() )
        return false;

    // create the main application window
    MyFrame *frame = new MyFrame(_T("Keyboard wxWidgets App"),
                                 wxPoint(50, 50), wxSize(450, 340));

    // and show it (the frames, unlike simple controls, are not shown when
    // created initially)
    frame->Show(true);

    // success: wxApp::OnRun() will be called which will enter the main message
    // loop and the application will run. If we returned false here, the
    // application would exit immediately.
    return true;
}

// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------

// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size, long style)
       : wxFrame(NULL, wxID_ANY, title, pos, size, style),
         m_winText(NULL)
{
#if wxUSE_MENUS
    // create a menu bar
    wxMenu *menuFile = new wxMenu;
    menuFile->Append(Keyboard_Clear, _T("&Clear log\tCtrl-L"));
    menuFile->AppendSeparator();
    menuFile->Append(Keyboard_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));

    wxMenu *menuKeys = new wxMenu;
    menuKeys->AppendCheckItem(Keyboard_ShowRaw, _T("Show &raw keys\tCtrl-R"));
    menuKeys->AppendSeparator();
    menuKeys->AppendCheckItem(Keyboard_Skip, _T("&Skip key down\tCtrl-S"));

    // the "About" item should be in the help menu
    wxMenu *menuHelp = new wxMenu;
    menuHelp->Append(Keyboard_About, _T("&About...\tF1"), _T("Show about dialog"));

    // now append the freshly created menu to the menu bar...
    wxMenuBar *menuBar = new wxMenuBar();
    menuBar->Append(menuFile, _T("&File"));
    menuBar->Append(menuKeys, _T("&Keys"));
    menuBar->Append(menuHelp, _T("&Help"));

    // ... and attach this menu bar to the frame
    SetMenuBar(menuBar);

    menuBar->Check(Keyboard_Skip, true);

#ifndef wxHAS_RAW_KEY_CODES
    menuBar->Enable(Keyboard_ShowRaw, false);
#endif // !wxHAS_RAW_KEY_CODES
#endif // wxUSE_MENUS

    m_winText = new TextWindow(this);
    m_lboxLog = new wxListBox(this, wxID_ANY);

    m_logTarget = new LboxLogger(m_lboxLog, wxLog::GetActiveTarget());
    wxLog::SetActiveTarget(m_logTarget);

#if wxUSE_STATUSBAR
    // create a status bar just for fun (by default with 1 pane only)
    CreateStatusBar(2);
    SetStatusText(_T("Welcome to wxWidgets!"));
#endif // wxUSE_STATUSBAR
}

// event handlers

void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
    // true is to force the frame to close
    Close(true);
}

void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
    wxString msg = _T("Demonstrates keyboard event processing in wxWidgets\n")
                   _T("(c) 2002 Vadim Zeitlin");

    wxMessageBox(msg, _T("About wxKeyboard"), wxOK | wxICON_INFORMATION, this);
}

void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event))
{
    m_lboxLog->Clear();
}

void MyFrame::OnSkip(wxCommandEvent& event)
{
    m_winText->SetSkip(event.IsChecked());
}

void MyFrame::OnShowRaw(wxCommandEvent& event)
{
    m_winText->SetShowRaw(event.IsChecked());
}

void MyFrame::OnSize(wxSizeEvent& WXUNUSED(event))
{
    if ( m_winText )
    {
        wxSize size = GetClientSize();
        m_winText->SetSize(0, 0, size.x, 50);
        m_lboxLog->SetSize(0, 51, size.x, size.y - 50);
    }
}

// ----------------------------------------------------------------------------
// TextWindow
// ----------------------------------------------------------------------------

void TextWindow::LogEvent(const wxChar *name, wxKeyEvent& event)
{
    wxString key;
    long keycode = event.GetKeyCode();
    switch ( keycode )
    {
        case WXK_BACK: key = _T("BACK"); break;
        case WXK_TAB: key = _T("TAB"); break;
        case WXK_RETURN: key = _T("RETURN"); break;
        case WXK_ESCAPE: key = _T("ESCAPE"); break;
        case WXK_SPACE: key = _T("SPACE"); break;
        case WXK_DELETE: key = _T("DELETE"); break;
        case WXK_START: key = _T("START"); break;
        case WXK_LBUTTON: key = _T("LBUTTON"); break;
        case WXK_RBUTTON: key = _T("RBUTTON"); break;
        case WXK_CANCEL: key = _T("CANCEL"); break;
        case WXK_MBUTTON: key = _T("MBUTTON"); break;
        case WXK_CLEAR: key = _T("CLEAR"); break;
        case WXK_SHIFT: key = _T("SHIFT"); break;
        case WXK_ALT: key = _T("ALT"); break;
        case WXK_CONTROL: key = _T("CONTROL"); break;
        case WXK_MENU: key = _T("MENU"); break;
        case WXK_PAUSE: key = _T("PAUSE"); break;
        case WXK_CAPITAL: key = _T("CAPITAL"); break;
        case WXK_END: key = _T("END"); break;
        case WXK_HOME: key = _T("HOME"); break;
        case WXK_LEFT: key = _T("LEFT"); break;
        case WXK_UP: key = _T("UP"); break;
        case WXK_RIGHT: key = _T("RIGHT"); break;
        case WXK_DOWN: key = _T("DOWN"); break;
        case WXK_SELECT: key = _T("SELECT"); break;
        case WXK_PRINT: key = _T("PRINT"); break;
        case WXK_EXECUTE: key = _T("EXECUTE"); break;
        case WXK_SNAPSHOT: key = _T("SNAPSHOT"); break;
        case WXK_INSERT: key = _T("INSERT"); break;
        case WXK_HELP: key = _T("HELP"); break;
        case WXK_NUMPAD0: key = _T("NUMPAD0"); break;
        case WXK_NUMPAD1: key = _T("NUMPAD1"); break;
        case WXK_NUMPAD2: key = _T("NUMPAD2"); break;
        case WXK_NUMPAD3: key = _T("NUMPAD3"); break;
        case WXK_NUMPAD4: key = _T("NUMPAD4"); break;
        case WXK_NUMPAD5: key = _T("NUMPAD5"); break;
        case WXK_NUMPAD6: key = _T("NUMPAD6"); break;
        case WXK_NUMPAD7: key = _T("NUMPAD7"); break;
        case WXK_NUMPAD8: key = _T("NUMPAD8"); break;
        case WXK_NUMPAD9: key = _T("NUMPAD9"); break;
        case WXK_MULTIPLY: key = _T("MULTIPLY"); break;
        case WXK_ADD: key = _T("ADD"); break;
        case WXK_SEPARATOR: key = _T("SEPARATOR"); break;
        case WXK_SUBTRACT: key = _T("SUBTRACT"); break;
        case WXK_DECIMAL: key = _T("DECIMAL"); break;
        case WXK_DIVIDE: key = _T("DIVIDE"); break;
        case WXK_F1: key = _T("F1"); break;
        case WXK_F2: key = _T("F2"); break;
        case WXK_F3: key = _T("F3"); break;
        case WXK_F4: key = _T("F4"); break;
        case WXK_F5: key = _T("F5"); break;
        case WXK_F6: key = _T("F6"); break;
        case WXK_F7: key = _T("F7"); break;
        case WXK_F8: key = _T("F8"); break;
        case WXK_F9: key = _T("F9"); break;
        case WXK_F10: key = _T("F10"); break;
        case WXK_F11: key = _T("F11"); break;
        case WXK_F12: key = _T("F12"); break;
        case WXK_F13: key = _T("F13"); break;
        case WXK_F14: key = _T("F14"); break;
        case WXK_F15: key = _T("F15"); break;
        case WXK_F16: key = _T("F16"); break;
        case WXK_F17: key = _T("F17"); break;
        case WXK_F18: key = _T("F18"); break;
        case WXK_F19: key = _T("F19"); break;
        case WXK_F20: key = _T("F20"); break;
        case WXK_F21: key = _T("F21"); break;
        case WXK_F22: key = _T("F22"); break;
        case WXK_F23: key = _T("F23"); break;
        case WXK_F24: key = _T("F24"); break;
        case WXK_NUMLOCK: key = _T("NUMLOCK"); break;
        case WXK_SCROLL: key = _T("SCROLL"); break;
        case WXK_PAGEUP: key = _T("PAGEUP"); break;
        case WXK_PAGEDOWN: key = _T("PAGEDOWN"); break;
        case WXK_NUMPAD_SPACE: key = _T("NUMPAD_SPACE"); break;
        case WXK_NUMPAD_TAB: key = _T("NUMPAD_TAB"); break;
        case WXK_NUMPAD_ENTER: key = _T("NUMPAD_ENTER"); break;
        case WXK_NUMPAD_F1: key = _T("NUMPAD_F1"); break;
        case WXK_NUMPAD_F2: key = _T("NUMPAD_F2"); break;
        case WXK_NUMPAD_F3: key = _T("NUMPAD_F3"); break;
        case WXK_NUMPAD_F4: key = _T("NUMPAD_F4"); break;
        case WXK_NUMPAD_HOME: key = _T("NUMPAD_HOME"); break;
        case WXK_NUMPAD_LEFT: key = _T("NUMPAD_LEFT"); break;
        case WXK_NUMPAD_UP: key = _T("NUMPAD_UP"); break;
        case WXK_NUMPAD_RIGHT: key = _T("NUMPAD_RIGHT"); break;
        case WXK_NUMPAD_DOWN: key = _T("NUMPAD_DOWN"); break;
        case WXK_NUMPAD_PAGEUP: key = _T("NUMPAD_PAGEUP"); break;
        case WXK_NUMPAD_PAGEDOWN: key = _T("NUMPAD_PAGEDOWN"); break;
        case WXK_NUMPAD_END: key = _T("NUMPAD_END"); break;
        case WXK_NUMPAD_BEGIN: key = _T("NUMPAD_BEGIN"); break;
        case WXK_NUMPAD_INSERT: key = _T("NUMPAD_INSERT"); break;
        case WXK_NUMPAD_DELETE: key = _T("NUMPAD_DELETE"); break;
        case WXK_NUMPAD_EQUAL: key = _T("NUMPAD_EQUAL"); break;
        case WXK_NUMPAD_MULTIPLY: key = _T("NUMPAD_MULTIPLY"); break;
        case WXK_NUMPAD_ADD: key = _T("NUMPAD_ADD"); break;
        case WXK_NUMPAD_SEPARATOR: key = _T("NUMPAD_SEPARATOR"); break;
        case WXK_NUMPAD_SUBTRACT: key = _T("NUMPAD_SUBTRACT"); break;
        case WXK_NUMPAD_DECIMAL: key = _T("NUMPAD_DECIMAL"); break;
        case WXK_NUMPAD_DIVIDE: key = _T("NUMPAD_DIVIDE"); break;

        default:
        {
            if ( keycode < 256 )
            {
                if ( keycode == 0 )
                    key.Printf(_T("NUL"));
                else if ( keycode < 27 )
                    key.Printf(_T("Ctrl-%c"),
                                (unsigned char)(_T('A') + keycode - 1));
                else
                    key.Printf(_T("'%c'"), (unsigned char)keycode);
            }
            else
            {
                key.Printf(_T("unknown (%ld)"), keycode);
            }
        }
    }

    wxString msg;
    msg.Printf(_T("%s event: %s (flags = %c%c%c%c)"),
               name,
               key.c_str(),
               GetChar(event.ControlDown(), _T('C')),
               GetChar(event.AltDown(), _T('A')),
               GetChar(event.ShiftDown(), _T('S')),
               GetChar(event.MetaDown(), _T('M')));

    if ( m_showRaw )
    {
        msg += wxString::Format(_T(" (raw key code/flags: %lu and 0x%lx)"),
                                (unsigned long)event.GetRawKeyCode(),
                                (unsigned long)event.GetRawKeyFlags());
    }

    wxLogMessage(msg);

    if ( m_skip )
    {
        event.Skip();
    }
}