src/mac/carbon/clipbrd.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/clipbrd.cpp
   3 // Purpose:     Clipboard functionality
   4 // Author:      Stefan Csomor;
   5 //              Generalized clipboard implementation by Matthew Flatt
   6 // Modified by:
   7 // Created:     1998-01-01
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) Stefan Csomor
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #include "wx/wxprec.h"
  14
  15 #if wxUSE_CLIPBOARD
  16
  17 #include "wx/clipbrd.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/intl.h"
  21     #include "wx/log.h"
  22     #include "wx/app.h"
  23     #include "wx/utils.h"
  24     #include "wx/frame.h"
  25     #include "wx/bitmap.h"
  26 #endif
  27
  28 #include "wx/metafile.h"
  29
  30 #include "wx/mac/uma.h"
  31
  32 #define wxUSE_DATAOBJ 1
  33
  34 #include <string.h>
  35
  36
  37 // the trace mask we use with wxLogTrace() - call
  38 // wxLog::AddTraceMask(TRACE_CLIPBOARD) to enable the trace messages from here
  39 // (there will be a *lot* of them!)
  40 static const wxChar *TRACE_CLIPBOARD = wxT("clipboard");
  41
  42 IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
  43
  44 wxClipboard::wxClipboard()
  45 {
  46     m_open = false;
  47     m_data = NULL ;
  48     PasteboardRef clipboard = 0;
  49     OSStatus err = PasteboardCreate( kPasteboardClipboard, &clipboard );
  50     if (err != noErr)
  51     {
  52         wxLogSysError( wxT("Failed to create the clipboard.") );
  53     }
  54     m_pasteboard.reset(clipboard);
  55 }
  56
  57 wxClipboard::~wxClipboard()
  58 {
  59     m_pasteboard.reset((PasteboardRef)0);
  60     delete m_data;
  61 }
  62
  63 void wxClipboard::Clear()
  64 {
  65     if (m_data != NULL)
  66     {
  67         delete m_data;
  68         m_data = NULL;
  69     }
  70
  71     OSStatus err = PasteboardClear( m_pasteboard );
  72     if (err != noErr)
  73     {
  74         wxLogSysError( wxT("Failed to empty the clipboard.") );
  75     }
  76 }
  77
  78 bool wxClipboard::Flush()
  79 {
  80     return false;
  81 }
  82
  83 bool wxClipboard::Open()
  84 {
  85     wxCHECK_MSG( !m_open, false, wxT("clipboard already open") );
  86
  87     m_open = true;
  88
  89     return true;
  90 }
  91
  92 bool wxClipboard::IsOpened() const
  93 {
  94     return m_open;
  95 }
  96
  97 bool wxClipboard::SetData( wxDataObject *data )
  98 {
  99     if ( IsUsingPrimarySelection() )
 100         return false;
 101
 102     wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
 103     wxCHECK_MSG( data, false, wxT("data is invalid") );
 104
 105     Clear();
 106
 107     // as we can only store one wxDataObject,
 108     // this is the same in this implementation
 109     return AddData( data );
 110 }
 111
 112 bool wxClipboard::AddData( wxDataObject *data )
 113 {
 114     if ( IsUsingPrimarySelection() )
 115         return false;
 116
 117     wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
 118     wxCHECK_MSG( data, false, wxT("data is invalid") );
 119
 120     // we can only store one wxDataObject
 121     Clear();
 122
 123     PasteboardSyncFlags syncFlags = PasteboardSynchronize( m_pasteboard );
 124     wxCHECK_MSG( !(syncFlags&kPasteboardModified), false, wxT("clipboard modified after clear") );
 125     wxCHECK_MSG( (syncFlags&kPasteboardClientIsOwner), false, wxT("client couldn't own clipboard") );
 126
 127     m_data = data;
 128
 129     data->AddToPasteboard( m_pasteboard, 1 );
 130
 131     return true;
 132 }
 133
 134 void wxClipboard::Close()
 135 {
 136     wxCHECK_RET( m_open, wxT("clipboard not open") );
 137
 138     m_open = false;
 139
 140     // Get rid of cached object.
 141     // If this is not done, copying data from
 142     // another application will only work once
 143     if (m_data)
 144     {
 145         delete m_data;
 146         m_data = (wxDataObject*) NULL;
 147     }
 148 }
 149
 150 bool wxClipboard::IsSupported( const wxDataFormat &dataFormat )
 151 {
 152     if ( m_data )
 153         return m_data->IsSupported( dataFormat );
 154     return wxDataObject::IsFormatInPasteboard( m_pasteboard, dataFormat );
 155 }
 156
 157 bool wxClipboard::GetData( wxDataObject& data )
 158 {
 159     if ( IsUsingPrimarySelection() )
 160         return false;
 161
 162     wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
 163
 164     size_t formatcount = data.GetFormatCount() + 1;
 165     wxDataFormat *array = new wxDataFormat[ formatcount ];
 166     array[0] = data.GetPreferredFormat();
 167     data.GetAllFormats( &array[1] );
 168
 169     bool transferred = false;
 170
 171     if ( m_data )
 172     {
 173         for (size_t i = 0; !transferred && i < formatcount; i++)
 174         {
 175             wxDataFormat format = array[ i ];
 176             if ( m_data->IsSupported( format ) )
 177             {
 178                 int dataSize = m_data->GetDataSize( format );
 179                 transferred = true;
 180
 181                 if (dataSize == 0)
 182                 {
 183                     data.SetData( format, 0, 0 );
 184                 }
 185                 else
 186                 {
 187                     char *d = new char[ dataSize ];
 188                     m_data->GetDataHere( format, (void*)d );
 189                     data.SetData( format, dataSize, d );
 190                     delete [] d;
 191                 }
 192             }
 193         }
 194     }
 195
 196     // get formats from wxDataObjects
 197     if ( !transferred )
 198     {
 199         transferred = data.GetFromPasteboard( m_pasteboard ) ;
 200     }
 201
 202     delete [] array;
 203
 204     return transferred;
 205 }
 206
 207 #endif