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