src/common/clipcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/clipcmn.cpp
   3 // Purpose:     common (to all ports) wxClipboard functions
   4 // Author:      Robert Roebling
   5 // Modified by:
   6 // Created:     28.06.99
   7 // Copyright:   (c) Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // For compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_CLIPBOARD
  27
  28 #include "wx/clipbrd.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/dataobj.h"
  32     #include "wx/module.h"
  33 #endif
  34
  35 // ---------------------------------------------------------
  36 // wxClipboardEvent
  37 // ---------------------------------------------------------
  38
  39 IMPLEMENT_DYNAMIC_CLASS(wxClipboardEvent,wxEvent)
  40
  41 wxDEFINE_EVENT( wxEVT_CLIPBOARD_CHANGED, wxClipboardEvent );
  42
  43 bool wxClipboardEvent::SupportsFormat( const wxDataFormat &format ) const
  44 {
  45 #ifdef __WXGTK20__
  46     for (wxVector<wxDataFormat>::size_type n = 0; n < m_formats.size(); n++)
  47     {
  48         if (m_formats[n] == format)
  49             return true;
  50     }
  51
  52     return false;
  53 #else
  54     // All other ports just query the clipboard directly
  55     // from here
  56     wxClipboard* clipboard = (wxClipboard*) GetEventObject();
  57     return clipboard->IsSupported( format );
  58 #endif
  59 }
  60
  61 void wxClipboardEvent::AddFormat(const wxDataFormat& format)
  62 {
  63     m_formats.push_back( format );
  64 }
  65
  66 // ---------------------------------------------------------
  67 // wxClipboardBase
  68 // ---------------------------------------------------------
  69
  70 static wxClipboard *gs_clipboard = NULL;
  71
  72 /*static*/ wxClipboard *wxClipboardBase::Get()
  73 {
  74     if ( !gs_clipboard )
  75     {
  76         gs_clipboard = new wxClipboard;
  77     }
  78     return gs_clipboard;
  79 }
  80
  81 bool wxClipboardBase::IsSupportedAsync( wxEvtHandler *sink )
  82 {
  83     // We just imitate an asynchronous API on most platforms.
  84     // This method is overridden uner GTK.
  85     wxClipboardEvent *event = new wxClipboardEvent(wxEVT_CLIPBOARD_CHANGED);
  86     event->SetEventObject( this );
  87
  88     sink->QueueEvent( event );
  89
  90     return true;
  91 }
  92
  93
  94 // ----------------------------------------------------------------------------
  95 // wxClipboardModule: module responsible for destroying the global clipboard
  96 // object
  97 // ----------------------------------------------------------------------------
  98
  99 class wxClipboardModule : public wxModule
 100 {
 101 public:
 102     bool OnInit() { return true; }
 103     void OnExit() { wxDELETE(gs_clipboard); }
 104
 105 private:
 106     DECLARE_DYNAMIC_CLASS(wxClipboardModule)
 107 };
 108
 109 IMPLEMENT_DYNAMIC_CLASS(wxClipboardModule, wxModule)
 110
 111 #endif // wxUSE_CLIPBOARD