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wxWidgets/samples/keyboard/keyboard.cpp

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/////////////////////////////////////////////////////////////////////////////
// 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 wxChar *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);
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();
}
}
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