src/motif/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/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 #if wxUSE_CLIPBOARD
  14
  15 #include "wx/dataobj.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/app.h"
  19     #include "wx/utils.h"
  20 #endif
  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 wxString &id )
  65 {
  66     PrepareFormats();
  67     SetId( id );
  68 }
  69
  70 wxDataFormat::wxDataFormat( NativeFormat format )
  71 {
  72     PrepareFormats();
  73     SetId( format );
  74 }
  75
  76 void wxDataFormat::SetType( wxDataFormatId type )
  77 {
  78     PrepareFormats();
  79     m_type = type;
  80
  81     if (m_type == wxDF_TEXT)
  82         m_format = g_textAtom;
  83     else
  84     if (m_type == wxDF_BITMAP)
  85         m_format = g_bitmapAtom;
  86     else
  87     if (m_type == wxDF_FILENAME)
  88         m_format = g_fileAtom;
  89     else
  90     {
  91        wxFAIL_MSG( wxT("invalid dataformat") );
  92     }
  93 }
  94
  95 wxDataFormatId wxDataFormat::GetType() const
  96 {
  97     return m_type;
  98 }
  99
 100 wxString wxDataFormat::GetId() const
 101 {
 102     char *t = XGetAtomName ((Display*) wxGetDisplay(), m_format);
 103     wxString ret( t );  // this will convert from ascii to Unicode
 104     if (t)
 105         XFree( t );
 106     return ret;
 107 }
 108
 109 void wxDataFormat::SetId( NativeFormat format )
 110 {
 111     PrepareFormats();
 112     m_format = format;
 113
 114     if (m_format == g_textAtom)
 115         m_type = wxDF_TEXT;
 116     else
 117     if (m_format == g_bitmapAtom)
 118         m_type = wxDF_BITMAP;
 119     else
 120     if (m_format == g_fileAtom)
 121         m_type = wxDF_FILENAME;
 122     else
 123         m_type = wxDF_PRIVATE;
 124 }
 125
 126 void wxDataFormat::SetId( const wxString& id )
 127 {
 128     PrepareFormats();
 129     m_type = wxDF_PRIVATE;
 130     m_format = XInternAtom( wxGlobalDisplay(),
 131                             id.mbc_str(), False );
 132 }
 133
 134 void wxDataFormat::PrepareFormats()
 135 {
 136     if (!g_textAtom)
 137         g_textAtom = XInternAtom( wxGlobalDisplay(), "STRING", False );
 138     if (!g_bitmapAtom)
 139         g_bitmapAtom = XInternAtom( wxGlobalDisplay(), "PIXMAP", False );
 140     if (!g_fileAtom)
 141         g_fileAtom = XInternAtom( wxGlobalDisplay(), "file:ALL", False );
 142 }
 143
 144 // ----------------------------------------------------------------------------
 145 // wxDataObject
 146 // ----------------------------------------------------------------------------
 147
 148 wxDataObject::~wxDataObject()
 149 {
 150 }
 151
 152 // ----------------------------------------------------------------------------
 153 // wxBitmapDataObject
 154 // ----------------------------------------------------------------------------
 155
 156 size_t wxBitmapDataObject::GetDataSize() const
 157 {
 158     return sizeof(Pixmap);
 159 }
 160
 161 bool wxBitmapDataObject::GetDataHere(void* buf) const
 162 {
 163     if( !GetBitmap().Ok() )
 164         return false;
 165
 166     (*(Pixmap*)buf) = (Pixmap)GetBitmap().GetDrawable();
 167
 168     return true;
 169 }
 170
 171 bool wxBitmapDataObject::SetData(size_t len, const void* buf)
 172 {
 173     if( len != sizeof(Pixmap) )
 174         return false;
 175
 176     WXPixmap pixmap = (WXPixmap)*(Pixmap*)buf;
 177
 178     m_bitmap.Create( pixmap );
 179
 180     return true;
 181 }
 182
 183 #endif // wxUSE_CLIPBOARD