samples/clipboard/clipboard.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        clipboard.cpp
   3 // Purpose:     clipbaord wxWidgets sample
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id: minimal.cpp 53461 2008-05-05 23:30:33Z VZ $
   6 // Copyright:   (c) Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx/wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #ifdef __BORLANDC__
  14     #pragma hdrstop
  15 #endif
  16
  17 // for all others, include the necessary headers (this file is usually all you
  18 // need because it includes almost all "standard" wxWidgets headers)
  19 #ifndef WX_PRECOMP
  20     #include "wx/wx.h"
  21 #endif
  22
  23 #include "wx/clipbrd.h"
  24
  25 #if !defined(__WXMSW__) && !defined(__WXPM__)
  26     #include "../sample.xpm"
  27 #endif
  28
  29 class MyApp : public wxApp
  30 {
  31 public:
  32     virtual bool OnInit();
  33 };
  34
  35 enum AsyncRequestState
  36 {
  37    Idle,
  38    Waiting,
  39    Finished
  40 };
  41
  42 class MyFrame : public wxFrame
  43 {
  44 public:
  45     MyFrame(const wxString& title);
  46
  47     void OnQuit(wxCommandEvent&event);
  48     void OnAbout(wxCommandEvent&event);
  49     void OnWriteClipboardContents(wxCommandEvent&event);
  50     void OnUpdateUI(wxUpdateUIEvent&event);
  51     void OnClipboardChange(wxClipboardEvent&event);
  52
  53 private:
  54     wxTextCtrl        *m_textctrl;
  55     AsyncRequestState  m_request;
  56     bool               m_clipboardSupportsText;
  57
  58     DECLARE_EVENT_TABLE()
  59 };
  60
  61 enum
  62 {
  63     ID_Quit   = wxID_EXIT,
  64     ID_About  = wxID_ABOUT,
  65     ID_Write  = 100,
  66     ID_Text   = 101
  67 };
  68
  69 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  70     EVT_MENU(ID_Quit,  MyFrame::OnQuit)
  71     EVT_MENU(ID_About, MyFrame::OnAbout)
  72     EVT_BUTTON(ID_Write, MyFrame::OnWriteClipboardContents)
  73     EVT_UPDATE_UI(ID_Write, MyFrame::OnUpdateUI)
  74     EVT_CLIPBOARD_CHANGED(MyFrame::OnClipboardChange)
  75 END_EVENT_TABLE()
  76
  77 IMPLEMENT_APP(MyApp)
  78
  79 bool MyApp::OnInit()
  80 {
  81     if ( !wxApp::OnInit() )
  82         return false;
  83
  84     MyFrame *frame = new MyFrame("wxClipboard sample");
  85     frame->Show(true);
  86
  87     return true;
  88 }
  89
  90 MyFrame::MyFrame(const wxString& title)
  91        : wxFrame(NULL, wxID_ANY, title)
  92 {
  93     // set the frame icon
  94     SetIcon(wxICON(sample));
  95
  96     m_request = Idle;
  97     m_clipboardSupportsText = false;
  98
  99 #if wxUSE_MENUS
 100     // create a menu bar
 101     wxMenu *fileMenu = new wxMenu;
 102
 103     // the "About" item should be in the help menu
 104     wxMenu *helpMenu = new wxMenu;
 105     helpMenu->Append(ID_About, "&About...\tF1", "Show about dialog");
 106
 107     fileMenu->Append(ID_Quit, "E&xit\tAlt-X", "Quit this program");
 108
 109     // now append the freshly created menu to the menu bar...
 110     wxMenuBar *menuBar = new wxMenuBar();
 111     menuBar->Append(fileMenu, "&File");
 112     menuBar->Append(helpMenu, "&Help");
 113
 114     // ... and attach this menu bar to the frame
 115     SetMenuBar(menuBar);
 116 #endif // wxUSE_MENUS
 117
 118     wxPanel *panel = new wxPanel( this, -1 );
 119
 120     wxBoxSizer *main_sizer = new wxBoxSizer( wxVERTICAL );
 121     main_sizer->Add( new wxButton( panel, ID_Write, "Get clipboard text" ) );
 122     m_textctrl = new wxTextCtrl( panel, ID_Text, "", wxDefaultPosition,
 123       wxDefaultSize, wxTE_MULTILINE );
 124     main_sizer->Add( m_textctrl, 1, wxGROW );
 125     panel->SetSizer( main_sizer );
 126 }
 127
 128 void MyFrame::OnWriteClipboardContents(wxCommandEvent& event)
 129 {
 130    if (wxTheClipboard->Open())
 131    {
 132         if (wxTheClipboard->IsSupported( wxDF_UNICODETEXT ))
 133         {
 134             wxTextDataObject data;
 135             wxTheClipboard->GetData( data );
 136             m_textctrl->Clear();
 137             m_textctrl->SetValue( data.GetText() );
 138
 139         }
 140         wxTheClipboard->Close();
 141    }
 142 }
 143
 144 void MyFrame::OnClipboardChange(wxClipboardEvent&event)
 145 {
 146     m_clipboardSupportsText = event.SupportsFormat( wxDF_UNICODETEXT );
 147     m_request = Finished;
 148 }
 149
 150 void MyFrame::OnUpdateUI(wxUpdateUIEvent&event)
 151 {
 152     if (m_request == Idle)
 153     {
 154         wxTheClipboard->IsSupportedAsync( this );
 155         m_request = Waiting;
 156         event.Enable( m_clipboardSupportsText ); // not yet known, assume last value
 157     }
 158     else if (m_request == Waiting)
 159     {
 160         event.Enable( m_clipboardSupportsText ); // not yet known, assume last value
 161     }
 162     else if (m_request == Finished)
 163     {
 164         event.Enable( m_clipboardSupportsText );
 165         m_request = Idle;
 166     }
 167 }
 168
 169 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 170 {
 171     // true is to force the frame to close
 172     Close(true);
 173 }
 174
 175 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 176 {
 177 }
 178
 179