src/motif/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        dataobj.cpp
   3 // Purpose:     wxDataObject class
   4 // Author:      Julian Smart
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Julian Smart
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "dataobj.h"
  12 #endif
  13
  14 #include "wx/defs.h"
  15
  16 #if wxUSE_CLIPBOARD
  17
  18 #include "wx/dataobj.h"
  19 #include "wx/app.h"
  20 #include "wx/utils.h"
  21
  22 #ifdef __VMS__
  23 #pragma message disable nosimpint
  24 #endif
  25 #include <Xm/Xm.h>
  26 #ifdef __VMS__
  27 #pragma message enable nosimpint
  28 #endif
  29
  30 #include "wx/motif/private.h"
  31
  32 //-------------------------------------------------------------------------
  33 // global data
  34 //-------------------------------------------------------------------------
  35
  36 Atom  g_textAtom        = 0;
  37 Atom  g_bitmapAtom      = 0;
  38 Atom  g_fileAtom        = 0;
  39
  40 //-------------------------------------------------------------------------
  41 // wxDataFormat
  42 //-------------------------------------------------------------------------
  43
  44 wxDataFormat::wxDataFormat()
  45 {
  46     // do *not* call PrepareFormats() from here for 2 reasons:
  47     //
  48     // 1. we will have time to do it later because some other Set function
  49     //    must be called before we really need them
  50     //
  51     // 2. doing so prevents us from declaring global wxDataFormats because
  52     //    calling PrepareFormats (and thus gdk_atom_intern) before GDK is
  53     //    initialised will result in a crash
  54     m_type = wxDF_INVALID;
  55     m_format = (Atom) 0;
  56 }
  57
  58 wxDataFormat::wxDataFormat( wxDataFormatId type )
  59 {
  60     PrepareFormats();
  61     SetType( type );
  62 }
  63
  64 wxDataFormat::wxDataFormat( const wxChar *id )
  65 {
  66     PrepareFormats();
  67     SetId( id );
  68 }
  69
  70 wxDataFormat::wxDataFormat( const wxString &id )
  71 {
  72     PrepareFormats();
  73     SetId( id );
  74 }
  75
  76 wxDataFormat::wxDataFormat( NativeFormat format )
  77 {
  78     PrepareFormats();
  79     SetId( format );
  80 }
  81
  82 void wxDataFormat::SetType( wxDataFormatId type )
  83 {
  84     PrepareFormats();
  85     m_type = type;
  86
  87     if (m_type == wxDF_TEXT)
  88         m_format = g_textAtom;
  89     else
  90     if (m_type == wxDF_BITMAP)
  91         m_format = g_bitmapAtom;
  92     else
  93     if (m_type == wxDF_FILENAME)
  94         m_format = g_fileAtom;
  95     else
  96     {
  97        wxFAIL_MSG( wxT("invalid dataformat") );
  98     }
  99 }
 100
 101 wxDataFormatId wxDataFormat::GetType() const
 102 {
 103     return m_type;
 104 }
 105
 106 wxString wxDataFormat::GetId() const
 107 {
 108     char *t = XGetAtomName ((Display*) wxGetDisplay(), m_format);
 109     wxString ret( t );  // this will convert from ascii to Unicode
 110     if (t)
 111         XFree( t );
 112     return ret;
 113 }
 114
 115 void wxDataFormat::SetId( NativeFormat format )
 116 {
 117     PrepareFormats();
 118     m_format = format;
 119
 120     if (m_format == g_textAtom)
 121         m_type = wxDF_TEXT;
 122     else
 123     if (m_format == g_bitmapAtom)
 124         m_type = wxDF_BITMAP;
 125     else
 126     if (m_format == g_fileAtom)
 127         m_type = wxDF_FILENAME;
 128     else
 129         m_type = wxDF_PRIVATE;
 130 }
 131
 132 void wxDataFormat::SetId( const wxChar *id )
 133 {
 134     PrepareFormats();
 135     m_type = wxDF_PRIVATE;
 136     wxString tmp( id );
 137     m_format = XInternAtom( wxGlobalDisplay(),
 138                             tmp.mbc_str(), FALSE );
 139 }
 140
 141 void wxDataFormat::PrepareFormats()
 142 {
 143     if (!g_textAtom)
 144         g_textAtom = XInternAtom( wxGlobalDisplay(), "STRING", FALSE );
 145     if (!g_bitmapAtom)
 146         g_bitmapAtom = XInternAtom( wxGlobalDisplay(), "PIXMAP", FALSE );
 147     if (!g_fileAtom)
 148         g_fileAtom = XInternAtom( wxGlobalDisplay(), "file:ALL", FALSE );
 149 }
 150
 151 // ----------------------------------------------------------------------------
 152 // wxDataObject
 153 // ----------------------------------------------------------------------------
 154
 155 wxDataObject::~wxDataObject()
 156 {
 157 }
 158
 159 // ----------------------------------------------------------------------------
 160 // wxBitmapDataObject
 161 // ----------------------------------------------------------------------------
 162
 163 size_t wxBitmapDataObject::GetDataSize() const
 164 {
 165     return sizeof(Pixmap);
 166 }
 167
 168 bool wxBitmapDataObject::GetDataHere(void* buf) const
 169 {
 170     if( !GetBitmap().Ok() )
 171         return false;
 172
 173     (*(Pixmap*)buf) = (Pixmap)GetBitmap().GetDrawable();
 174
 175     return true;
 176 }
 177
 178 bool wxBitmapDataObject::SetData(size_t len, const void* buf)
 179 {
 180     if( len != sizeof(Pixmap) )
 181         return false;
 182
 183     WXPixmap pixmap = (WXPixmap)*(Pixmap*)buf;
 184
 185     m_bitmap.Create( pixmap );
 186
 187     return true;
 188 }
 189
 190 #endif // wxUSE_CLIPBOARD