samples/access/accesstest.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        accesstest.cpp
   3 // Purpose:     wxWindows accessibility sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     2002-02-12
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 // for all others, include the necessary headers (this file is usually all you
  28 // need because it includes almost all "standard" wxWindows headers)
  29 #ifndef WX_PRECOMP
  30     #include "wx/wx.h"
  31 #endif
  32
  33 #include "wx/access.h"
  34
  35 // ----------------------------------------------------------------------------
  36 // resources
  37 // ----------------------------------------------------------------------------
  38
  39 // the application icon (under Windows and OS/2 it is in resources)
  40 #if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__)
  41     #include "mondrian.xpm"
  42 #endif
  43
  44 // ----------------------------------------------------------------------------
  45 // private classes
  46 // ----------------------------------------------------------------------------
  47
  48 // Define a new application type, each program should derive a class from wxApp
  49 class MyApp : public wxApp
  50 {
  51 public:
  52     // override base class virtuals
  53     // ----------------------------
  54
  55     // this one is called on application startup and is a good place for the app
  56     // initialization (doing it here and not in the ctor allows to have an error
  57     // return: if OnInit() returns false, the application terminates)
  58     virtual bool OnInit();
  59 };
  60
  61 // Define a new frame type: this is going to be our main frame
  62 class MyFrame : public wxFrame
  63 {
  64 public:
  65     // ctor(s)
  66     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size,
  67             long style = wxDEFAULT_FRAME_STYLE);
  68
  69     // event handlers (these functions should _not_ be virtual)
  70     void OnQuit(wxCommandEvent& event);
  71     void OnAbout(wxCommandEvent& event);
  72
  73 private:
  74     // any class wishing to process wxWindows events must use this macro
  75     DECLARE_EVENT_TABLE()
  76 };
  77
  78 // ----------------------------------------------------------------------------
  79 // constants
  80 // ----------------------------------------------------------------------------
  81
  82 // IDs for the controls and the menu commands
  83 enum
  84 {
  85     // menu items
  86     AccessTest_Quit = 1,
  87
  88     // it is important for the id corresponding to the "About" command to have
  89     // this standard value as otherwise it won't be handled properly under Mac
  90     // (where it is special and put into the "Apple" menu)
  91     AccessTest_About = wxID_ABOUT
  92 };
  93
  94 // ----------------------------------------------------------------------------
  95 // event tables and other macros for wxWindows
  96 // ----------------------------------------------------------------------------
  97
  98 // the event tables connect the wxWindows events with the functions (event
  99 // handlers) which process them. It can be also done at run-time, but for the
 100 // simple menu events like this the static method is much simpler.
 101 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 102     EVT_MENU(AccessTest_Quit,  MyFrame::OnQuit)
 103     EVT_MENU(AccessTest_About, MyFrame::OnAbout)
 104 END_EVENT_TABLE()
 105
 106 // Create a new application object: this macro will allow wxWindows to create
 107 // the application object during program execution (it's better than using a
 108 // static object for many reasons) and also declares the accessor function
 109 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 110 // not wxApp)
 111 IMPLEMENT_APP(MyApp)
 112
 113 // ============================================================================
 114 // implementation
 115 // ============================================================================
 116
 117 // ----------------------------------------------------------------------------
 118 // the application class
 119 // ----------------------------------------------------------------------------
 120
 121 // 'Main program' equivalent: the program execution "starts" here
 122 bool MyApp::OnInit()
 123 {
 124     // create the main application window
 125     MyFrame *frame = new MyFrame(_T("AccessTest wxWindows App"),
 126                                  wxPoint(50, 50), wxSize(450, 340));
 127
 128     // and show it (the frames, unlike simple controls, are not shown when
 129     // created initially)
 130     frame->Show(TRUE);
 131
 132     // success: wxApp::OnRun() will be called which will enter the main message
 133     // loop and the application will run. If we returned FALSE here, the
 134     // application would exit immediately.
 135     return TRUE;
 136 }
 137
 138 class FrameAccessible: public wxWindowAccessible
 139 {
 140 public:
 141     FrameAccessible(wxWindow* win): wxWindowAccessible(win) {}
 142
 143             // Gets the name of the specified object.
 144     virtual wxAccStatus GetName(int childId, wxString* name)
 145     {
 146 #if 1
 147         if (childId == wxACC_SELF)
 148         {
 149             * name = wxT("Julian's Frame");
 150             return wxACC_OK;
 151         }
 152         else
 153 #endif
 154             return wxACC_NOT_IMPLEMENTED;
 155     }
 156 };
 157
 158 class ScrolledWindowAccessible: public wxWindowAccessible
 159 {
 160 public:
 161     ScrolledWindowAccessible(wxWindow* win): wxWindowAccessible(win) {}
 162
 163             // Gets the name of the specified object.
 164     virtual wxAccStatus GetName(int childId, wxString* name)
 165     {
 166         if (childId == wxACC_SELF)
 167         {
 168             * name = wxT("My scrolled window");
 169             return wxACC_OK;
 170         }
 171         else
 172             return wxACC_NOT_IMPLEMENTED;
 173     }
 174 };
 175
 176 // ----------------------------------------------------------------------------
 177 // main frame
 178 // ----------------------------------------------------------------------------
 179
 180 // frame constructor
 181 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size, long style)
 182        : wxFrame(NULL, -1, title, pos, size, style)
 183 {
 184     SetAccessible(new FrameAccessible(this));
 185
 186     // set the frame icon
 187     SetIcon(wxICON(mondrian));
 188
 189 #if wxUSE_MENUS
 190     // create a menu bar
 191     wxMenu *menuFile = new wxMenu;
 192
 193     // the "About" item should be in the help menu
 194     wxMenu *helpMenu = new wxMenu;
 195     helpMenu->Append(AccessTest_About, _T("&About...\tF1"), _T("Show about dialog"));
 196
 197     menuFile->Append(AccessTest_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
 198
 199     // now append the freshly created menu to the menu bar...
 200     wxMenuBar *menuBar = new wxMenuBar();
 201     menuBar->Append(menuFile, _T("&File"));
 202     menuBar->Append(helpMenu, _T("&Help"));
 203
 204     // ... and attach this menu bar to the frame
 205     SetMenuBar(menuBar);
 206 #endif // wxUSE_MENUS
 207
 208 #if wxUSE_STATUSBAR
 209     // create a status bar just for fun (by default with 1 pane only)
 210     CreateStatusBar(2);
 211     SetStatusText(_T("Welcome to wxWindows!"));
 212 #endif // wxUSE_STATUSBAR
 213
 214 #if 1
 215     wxListBox* listBox = new wxListBox(this, -1);
 216     listBox->SetAccessible(new ScrolledWindowAccessible(listBox));
 217 #else
 218     wxScrolledWindow* scrolledWindow = new wxScrolledWindow(this, -1);
 219     scrolledWindow->SetAccessible(new ScrolledWindowAccessible(scrolledWindow));
 220 #endif
 221 }
 222
 223
 224 // event handlers
 225
 226 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 227 {
 228     // TRUE is to force the frame to close
 229     Close(TRUE);
 230 }
 231
 232 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 233 {
 234     wxString msg;
 235     msg.Printf( _T("This is the About dialog of the AccessTest sample.\n")
 236                 _T("Welcome to %s"), wxVERSION_STRING);
 237
 238     wxMessageBox(msg, _T("About AccessTest"), wxOK | wxICON_INFORMATION, this);
 239 }