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 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/defs.h"
  18
  19 #if wxUSE_CLIPBOARD
  20
  21 #include "wx/dataobj.h"
  22 #include "wx/app.h"
  23 #include "wx/utils.h"
  24
  25 #ifdef __VMS__
  26 #pragma message disable nosimpint
  27 #endif
  28 #include <Xm/Xm.h>
  29 #ifdef __VMS__
  30 #pragma message enable nosimpint
  31 #endif
  32
  33 #include "wx/motif/private.h"
  34
  35 //-------------------------------------------------------------------------
  36 // global data
  37 //-------------------------------------------------------------------------
  38
  39 Atom  g_textAtom        = 0;
  40 Atom  g_bitmapAtom      = 0;
  41 Atom  g_fileAtom        = 0;
  42
  43 //-------------------------------------------------------------------------
  44 // wxDataFormat
  45 //-------------------------------------------------------------------------
  46
  47 wxDataFormat::wxDataFormat()
  48 {
  49     // do *not* call PrepareFormats() from here for 2 reasons:
  50     //
  51     // 1. we will have time to do it later because some other Set function
  52     //    must be called before we really need them
  53     //
  54     // 2. doing so prevents us from declaring global wxDataFormats because
  55     //    calling PrepareFormats (and thus gdk_atom_intern) before GDK is
  56     //    initialised will result in a crash
  57     m_type = wxDF_INVALID;
  58     m_format = (Atom) 0;
  59 }
  60
  61 wxDataFormat::wxDataFormat( wxDataFormatId type )
  62 {
  63     PrepareFormats();
  64     SetType( type );
  65 }
  66
  67 wxDataFormat::wxDataFormat( const wxChar *id )
  68 {
  69     PrepareFormats();
  70     SetId( id );
  71 }
  72
  73 wxDataFormat::wxDataFormat( const wxString &id )
  74 {
  75     PrepareFormats();
  76     SetId( id );
  77 }
  78
  79 wxDataFormat::wxDataFormat( NativeFormat format )
  80 {
  81     PrepareFormats();
  82     SetId( format );
  83 }
  84
  85 void wxDataFormat::SetType( wxDataFormatId type )
  86 {
  87     PrepareFormats();
  88     m_type = type;
  89
  90     if (m_type == wxDF_TEXT)
  91         m_format = g_textAtom;
  92     else
  93     if (m_type == wxDF_BITMAP)
  94         m_format = g_bitmapAtom;
  95     else
  96     if (m_type == wxDF_FILENAME)
  97         m_format = g_fileAtom;
  98     else
  99     {
 100        wxFAIL_MSG( wxT("invalid dataformat") );
 101     }
 102 }
 103
 104 wxDataFormatId wxDataFormat::GetType() const
 105 {
 106     return m_type;
 107 }
 108
 109 wxString wxDataFormat::GetId() const
 110 {
 111     char *t = XGetAtomName ((Display*) wxGetDisplay(), m_format);
 112     wxString ret( t );  // this will convert from ascii to Unicode
 113     if (t)
 114         XFree( t );
 115     return ret;
 116 }
 117
 118 void wxDataFormat::SetId( NativeFormat format )
 119 {
 120     PrepareFormats();
 121     m_format = format;
 122
 123     if (m_format == g_textAtom)
 124         m_type = wxDF_TEXT;
 125     else
 126     if (m_format == g_bitmapAtom)
 127         m_type = wxDF_BITMAP;
 128     else
 129     if (m_format == g_fileAtom)
 130         m_type = wxDF_FILENAME;
 131     else
 132         m_type = wxDF_PRIVATE;
 133 }
 134
 135 void wxDataFormat::SetId( const wxChar *id )
 136 {
 137     PrepareFormats();
 138     m_type = wxDF_PRIVATE;
 139     wxString tmp( id );
 140     m_format = XInternAtom( wxGlobalDisplay(),
 141                             tmp.mbc_str(), FALSE );
 142 }
 143
 144 void wxDataFormat::PrepareFormats()
 145 {
 146     if (!g_textAtom)
 147         g_textAtom = XInternAtom( wxGlobalDisplay(), "STRING", FALSE );
 148     if (!g_bitmapAtom)
 149         g_bitmapAtom = XInternAtom( wxGlobalDisplay(), "PIXMAP", FALSE );
 150     if (!g_fileAtom)
 151         g_fileAtom = XInternAtom( wxGlobalDisplay(), "file:ALL", FALSE );
 152 }
 153
 154 // ----------------------------------------------------------------------------
 155 // wxDataObject
 156 // ----------------------------------------------------------------------------
 157
 158 wxDataObject::~wxDataObject()
 159 {
 160 }
 161
 162 // ----------------------------------------------------------------------------
 163 // wxBitmapDataObject
 164 // ----------------------------------------------------------------------------
 165
 166 size_t wxBitmapDataObject::GetDataSize() const
 167 {
 168     return sizeof(Pixmap);
 169 }
 170
 171 bool wxBitmapDataObject::GetDataHere(void* buf) const
 172 {
 173     if( !GetBitmap().Ok() )
 174         return false;
 175
 176     (*(Pixmap*)buf) = (Pixmap)GetBitmap().GetDrawable();
 177
 178     return true;
 179 }
 180
 181 bool wxBitmapDataObject::SetData(size_t len, const void* buf)
 182 {
 183     if( len != sizeof(Pixmap) )
 184         return false;
 185
 186     WXPixmap pixmap = (WXPixmap)*(Pixmap*)buf;
 187
 188     m_bitmap.Create( pixmap );
 189
 190     return true;
 191 }
 192
 193 #endif // wxUSE_CLIPBOARD