1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk1/dataobj.cpp
3 // Purpose: wxDataObject class
4 // Author: Robert Roebling
6 // Copyright: (c) 1998 Robert Roebling
7 // Licence: wxWindows licence
8 ///////////////////////////////////////////////////////////////////////////////
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
15 #include "wx/dataobj.h"
23 #include "wx/mstream.h"
28 //-------------------------------------------------------------------------
30 //-------------------------------------------------------------------------
32 GdkAtom g_textAtom
= 0;
33 GdkAtom g_altTextAtom
= 0;
34 GdkAtom g_pngAtom
= 0;
35 GdkAtom g_fileAtom
= 0;
37 //-------------------------------------------------------------------------
39 //-------------------------------------------------------------------------
41 wxDataFormat::wxDataFormat()
43 // do *not* call PrepareFormats() from here for 2 reasons:
45 // 1. we will have time to do it later because some other Set function
46 // must be called before we really need them
48 // 2. doing so prevents us from declaring global wxDataFormats because
49 // calling PrepareFormats (and thus gdk_atom_intern) before GDK is
50 // initialised will result in a crash
51 m_type
= wxDF_INVALID
;
52 m_format
= (GdkAtom
) 0;
55 wxDataFormat::wxDataFormat( wxDataFormatId type
)
61 wxDataFormat::wxDataFormat( const wxString
&id
)
67 wxDataFormat::wxDataFormat( NativeFormat format
)
73 void wxDataFormat::SetType( wxDataFormatId type
)
80 if (m_type
== wxDF_UNICODETEXT
)
81 m_format
= g_textAtom
;
82 else if (m_type
== wxDF_TEXT
)
83 m_format
= g_altTextAtom
;
85 if (m_type
== wxDF_TEXT
|| m_type
== wxDF_UNICODETEXT
)
86 m_format
= g_textAtom
;
89 if (m_type
== wxDF_BITMAP
)
92 if (m_type
== wxDF_FILENAME
)
93 m_format
= g_fileAtom
;
96 wxFAIL_MSG( wxT("invalid dataformat") );
100 wxDataFormatId
wxDataFormat::GetType() const
105 wxString
wxDataFormat::GetId() const
107 gchar
* atom_name
= gdk_atom_name( m_format
);
108 wxString ret
= wxString::FromAscii( atom_name
);
113 void wxDataFormat::SetId( NativeFormat format
)
118 if (m_format
== g_textAtom
)
120 m_type
= wxDF_UNICODETEXT
;
125 if (m_format
== g_altTextAtom
)
128 if (m_format
== g_pngAtom
)
129 m_type
= wxDF_BITMAP
;
131 if (m_format
== g_fileAtom
)
132 m_type
= wxDF_FILENAME
;
134 m_type
= wxDF_PRIVATE
;
137 void wxDataFormat::SetId( const wxString
& id
)
140 m_type
= wxDF_PRIVATE
;
141 m_format
= gdk_atom_intern( id
.ToAscii(), FALSE
);
144 void wxDataFormat::PrepareFormats()
146 // VZ: GNOME included in RedHat 6.1 uses the MIME types below and not the
147 // atoms STRING and file:ALL as the old code was, but normal X apps
148 // use STRING for text selection when transfering the data via
149 // clipboard, for example, so do use STRING for now (GNOME apps will
150 // probably support STRING as well for compatibility anyhow), but use
151 // text/uri-list for file dnd because compatibility is not important
155 g_textAtom
= gdk_atom_intern( "UTF8_STRING", FALSE
);
156 g_altTextAtom
= gdk_atom_intern( "STRING", FALSE
);
158 g_textAtom
= gdk_atom_intern( "STRING" /* "text/plain" */, FALSE
);
161 g_pngAtom
= gdk_atom_intern( "image/png", FALSE
);
163 g_fileAtom
= gdk_atom_intern( "text/uri-list", FALSE
);
166 //-------------------------------------------------------------------------
168 //-------------------------------------------------------------------------
170 wxDataObject::wxDataObject()
174 wxDataObject::~wxDataObject()
176 // dtor is empty but needed for Darwin and AIX -- otherwise it doesn't link
179 bool wxDataObject::IsSupportedFormat(const wxDataFormat
& format
, Direction dir
) const
181 size_t nFormatCount
= GetFormatCount(dir
);
182 if ( nFormatCount
== 1 )
184 return format
== GetPreferredFormat();
188 wxDataFormat
*formats
= new wxDataFormat
[nFormatCount
];
189 GetAllFormats(formats
,dir
);
192 for ( n
= 0; n
< nFormatCount
; n
++ )
194 if ( formats
[n
] == format
)
201 return n
< nFormatCount
;
205 // ----------------------------------------------------------------------------
207 // ----------------------------------------------------------------------------
209 bool wxFileDataObject::GetDataHere(void *buf
) const
213 for (size_t i
= 0; i
< m_filenames
.GetCount(); i
++)
215 filenames
+= wxT("file:");
216 filenames
+= m_filenames
[i
];
217 filenames
+= wxT("\r\n");
220 memcpy( buf
, filenames
.mbc_str(), filenames
.length() + 1 );
225 size_t wxFileDataObject::GetDataSize() const
229 for (size_t i
= 0; i
< m_filenames
.GetCount(); i
++)
231 // This is junk in UTF-8
232 res
+= m_filenames
[i
].length();
233 res
+= 5 + 2; // "file:" (5) + "\r\n" (2)
239 bool wxFileDataObject::SetData(size_t WXUNUSED(size
), const void *buf
)
243 // we get data in the text/uri-list format, i.e. as a sequence of URIs
244 // (filenames prefixed by "file:") delimited by "\r\n"
246 for ( const char *p
= (const char *)buf
; ; p
++ )
248 // some broken programs (testdnd GTK+ sample!) omit the trailing
249 // "\r\n", so check for '\0' explicitly here instead of doing it in
250 // the loop statement to account for it
251 if ( (*p
== '\r' && *(p
+1) == '\n') || !*p
)
253 size_t lenPrefix
= 5; // strlen("file:")
254 if ( filename
.Left(lenPrefix
).MakeLower() == _T("file:") )
256 // sometimes the syntax is "file:filename", sometimes it's
257 // URL-like: "file://filename" - deal with both
258 if ( filename
[lenPrefix
] == _T('/') &&
259 filename
[lenPrefix
+ 1] == _T('/') )
265 AddFile(wxURI::Unescape(filename
.c_str() + lenPrefix
));
270 wxLogDebug(_T("Unsupported URI '%s' in wxFileDataObject"),
289 void wxFileDataObject::AddFile( const wxString
&filename
)
291 m_filenames
.Add( filename
);
294 // ----------------------------------------------------------------------------
295 // wxBitmapDataObject
296 // ----------------------------------------------------------------------------
298 wxBitmapDataObject::wxBitmapDataObject()
303 wxBitmapDataObject::wxBitmapDataObject( const wxBitmap
& bitmap
)
304 : wxBitmapDataObjectBase(bitmap
)
311 wxBitmapDataObject::~wxBitmapDataObject()
316 void wxBitmapDataObject::SetBitmap( const wxBitmap
&bitmap
)
320 wxBitmapDataObjectBase::SetBitmap(bitmap
);
325 bool wxBitmapDataObject::GetDataHere(void *buf
) const
329 wxFAIL_MSG( wxT("attempt to copy empty bitmap failed") );
334 memcpy(buf
, m_pngData
, m_pngSize
);
339 bool wxBitmapDataObject::SetData(size_t size
, const void *buf
)
343 wxCHECK_MSG( wxImage::FindHandler(wxBITMAP_TYPE_PNG
) != NULL
,
344 false, wxT("You must call wxImage::AddHandler(new wxPNGHandler); to be able to use clipboard with bitmaps!") );
347 m_pngData
= malloc(m_pngSize
);
349 memcpy(m_pngData
, buf
, m_pngSize
);
351 wxMemoryInputStream
mstream((char*) m_pngData
, m_pngSize
);
353 if ( !image
.LoadFile( mstream
, wxBITMAP_TYPE_PNG
) )
358 m_bitmap
= wxBitmap(image
);
360 return m_bitmap
.Ok();
363 void wxBitmapDataObject::DoConvertToPng()
365 if ( !m_bitmap
.Ok() )
368 wxCHECK_RET( wxImage::FindHandler(wxBITMAP_TYPE_PNG
) != NULL
,
369 wxT("You must call wxImage::AddHandler(new wxPNGHandler); to be able to use clipboard with bitmaps!") );
371 wxImage image
= m_bitmap
.ConvertToImage();
373 wxCountingOutputStream count
;
374 image
.SaveFile(count
, wxBITMAP_TYPE_PNG
);
376 m_pngSize
= count
.GetSize() + 100; // sometimes the size seems to vary ???
377 m_pngData
= malloc(m_pngSize
);
379 wxMemoryOutputStream
mstream((char*) m_pngData
, m_pngSize
);
380 image
.SaveFile(mstream
, wxBITMAP_TYPE_PNG
);
383 #endif // wxUSE_DATAOBJ