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 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_CLIPBOARD
  28
  29 #include "wx/clipbrd.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/dataobj.h"
  33     #include "wx/module.h"
  34 #endif
  35
  36 // ---------------------------------------------------------
  37 // wxClipboardEvent
  38 // ---------------------------------------------------------
  39
  40 IMPLEMENT_DYNAMIC_CLASS(wxClipboardEvent,wxEvent)
  41
  42 DEFINE_EVENT_TYPE(wxEVT_CLIPBOARD_CHANGED)
  43
  44 bool wxClipboardEvent::SupportsFormat( const wxDataFormat &format ) const
  45 {
  46 #ifdef __WXGTK20__
  47     // GTK has an asynchronnous API which reports
  48     // the supported formats one by one.
  49     // We may have to add X11 and Motif later.
  50     wxVector<wxDataFormat>::size_type n;
  51     for (n = 0; n < m_formats.size(); n++)
  52         { if (m_formats[n] == format) return true; }
  53     return false;
  54 #else
  55     // All other ports just query the clipboard directly
  56     // from here
  57     wxClipboard* clipboard = (wxClipboard*) GetEventObject();
  58     return clipboard->IsSupported( format );
  59 #endif
  60 }
  61
  62 void wxClipboardEvent::AddFormat( const wxDataFormat &format )
  63 {
  64     m_formats.push_back( format );
  65 }
  66
  67 // ---------------------------------------------------------
  68 // wxClipboardBase
  69 // ---------------------------------------------------------
  70
  71 static wxClipboard *gs_clipboard = NULL;
  72
  73 /*static*/ wxClipboard *wxClipboardBase::Get()
  74 {
  75     if ( !gs_clipboard )
  76     {
  77         gs_clipboard = new wxClipboard;
  78     }
  79     return gs_clipboard;
  80 }
  81
  82 bool wxClipboardBase::IsSupportedAsync( wxEvtHandler *sink )
  83 {
  84     // We just imitate an asynchronous API on most platforms.
  85     // This method is overridden uner GTK.
  86     wxClipboardEvent *event = new wxClipboardEvent(wxEVT_CLIPBOARD_CHANGED);
  87     event->SetEventObject( this );
  88
  89     sink->QueueEvent( event );
  90
  91     return true;
  92 }
  93
  94
  95 // ----------------------------------------------------------------------------
  96 // wxClipboardModule: module responsible for destroying the global clipboard
  97 // object
  98 // ----------------------------------------------------------------------------
  99
 100 class wxClipboardModule : public wxModule
 101 {
 102 public:
 103     bool OnInit() { return true; }
 104     void OnExit() { wxDELETE(gs_clipboard); }
 105
 106 private:
 107     DECLARE_DYNAMIC_CLASS(wxClipboardModule)
 108 };
 109
 110 IMPLEMENT_DYNAMIC_CLASS(wxClipboardModule, wxModule)
 111
 112 #endif // wxUSE_CLIPBOARD