src/motif/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/dataobj.cpp
   3 // Purpose:     wxDataObject class
   4 // Author:      Julian Smart
   5 // Copyright:   (c) 1998 Julian Smart
   6 // Licence:     wxWindows licence
   7 ///////////////////////////////////////////////////////////////////////////////
   8
   9 // For compilers that support precompilation, includes "wx.h".
  10 #include "wx/wxprec.h"
  11
  12 #if wxUSE_CLIPBOARD
  13
  14 #include "wx/dataobj.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/app.h"
  18     #include "wx/utils.h"
  19 #endif
  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 wxString &id )
  64 {
  65     PrepareFormats();
  66     SetId( id );
  67 }
  68
  69 wxDataFormat::wxDataFormat( NativeFormat format )
  70 {
  71     PrepareFormats();
  72     SetId( format );
  73 }
  74
  75 void wxDataFormat::SetType( wxDataFormatId type )
  76 {
  77     PrepareFormats();
  78     m_type = type;
  79
  80     if (m_type == wxDF_TEXT)
  81         m_format = g_textAtom;
  82     else
  83     if (m_type == wxDF_BITMAP)
  84         m_format = g_bitmapAtom;
  85     else
  86     if (m_type == wxDF_FILENAME)
  87         m_format = g_fileAtom;
  88     else
  89     {
  90        wxFAIL_MSG( wxT("invalid dataformat") );
  91     }
  92 }
  93
  94 wxDataFormatId wxDataFormat::GetType() const
  95 {
  96     return m_type;
  97 }
  98
  99 wxString wxDataFormat::GetId() const
 100 {
 101     char *t = XGetAtomName ((Display*) wxGetDisplay(), m_format);
 102     wxString ret( t );  // this will convert from ascii to Unicode
 103     if (t)
 104         XFree( t );
 105     return ret;
 106 }
 107
 108 void wxDataFormat::SetId( NativeFormat format )
 109 {
 110     PrepareFormats();
 111     m_format = format;
 112
 113     if (m_format == g_textAtom)
 114         m_type = wxDF_TEXT;
 115     else
 116     if (m_format == g_bitmapAtom)
 117         m_type = wxDF_BITMAP;
 118     else
 119     if (m_format == g_fileAtom)
 120         m_type = wxDF_FILENAME;
 121     else
 122         m_type = wxDF_PRIVATE;
 123 }
 124
 125 void wxDataFormat::SetId( const wxString& id )
 126 {
 127     PrepareFormats();
 128     m_type = wxDF_PRIVATE;
 129     m_format = XInternAtom( wxGlobalDisplay(),
 130                             id.mbc_str(), False );
 131 }
 132
 133 void wxDataFormat::PrepareFormats()
 134 {
 135     if (!g_textAtom)
 136         g_textAtom = XInternAtom( wxGlobalDisplay(), "STRING", False );
 137     if (!g_bitmapAtom)
 138         g_bitmapAtom = XInternAtom( wxGlobalDisplay(), "PIXMAP", False );
 139     if (!g_fileAtom)
 140         g_fileAtom = XInternAtom( wxGlobalDisplay(), "file:ALL", False );
 141 }
 142
 143 // ----------------------------------------------------------------------------
 144 // wxDataObject
 145 // ----------------------------------------------------------------------------
 146
 147 wxDataObject::~wxDataObject()
 148 {
 149 }
 150
 151 // ----------------------------------------------------------------------------
 152 // wxBitmapDataObject
 153 // ----------------------------------------------------------------------------
 154
 155 size_t wxBitmapDataObject::GetDataSize() const
 156 {
 157     return sizeof(Pixmap);
 158 }
 159
 160 bool wxBitmapDataObject::GetDataHere(void* buf) const
 161 {
 162     if( !GetBitmap().IsOk() )
 163         return false;
 164
 165     (*(Pixmap*)buf) = (Pixmap)GetBitmap().GetDrawable();
 166
 167     return true;
 168 }
 169
 170 bool wxBitmapDataObject::SetData(size_t len, const void* buf)
 171 {
 172     if( len != sizeof(Pixmap) )
 173         return false;
 174
 175     WXPixmap pixmap = (WXPixmap)*(Pixmap*)buf;
 176
 177     m_bitmap.Create( pixmap );
 178
 179     return true;
 180 }
 181
 182 #endif // wxUSE_CLIPBOARD