// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
-// Licence: wxWindows licence
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
-#pragma implementation "dataobj.h"
+ #pragma implementation "dataobj.h"
#endif
#include "wx/dataobj.h"
+#include "wx/app.h"
+#include "wx/debug.h"
+#include "wx/mstream.h"
+#include "wx/image.h"
+
+#include <gdk/gdk.h>
+
+//-------------------------------------------------------------------------
+// global data
+//-------------------------------------------------------------------------
+
+GdkAtom g_textAtom = 0;
+GdkAtom g_pngAtom = 0;
+GdkAtom g_fileAtom = 0;
+
+//-------------------------------------------------------------------------
+// wxDataFormat
+//-------------------------------------------------------------------------
+
+wxDataFormat::wxDataFormat()
+{
+ // do *not* call PrepareFormats() from here for 2 reasons:
+ //
+ // 1. we will have time to do it later because some other Set function
+ // must be called before we really need them
+ //
+ // 2. doing so prevents us from declaring global wxDataFormats because
+ // calling PrepareFormats (and thus gdk_atom_intern) before GDK is
+ // initialised will result in a crash
+ m_type = wxDF_INVALID;
+ m_format = (GdkAtom) 0;
+}
+
+wxDataFormat::wxDataFormat( wxDataFormatId type )
+{
+ PrepareFormats();
+ SetType( type );
+}
+
+wxDataFormat::wxDataFormat( const wxChar *id )
+{
+ PrepareFormats();
+ SetId( id );
+}
+
+wxDataFormat::wxDataFormat( const wxString &id )
+{
+ PrepareFormats();
+ SetId( id );
+}
+
+wxDataFormat::wxDataFormat( NativeFormat format )
+{
+ PrepareFormats();
+ SetId( format );
+}
+
+void wxDataFormat::SetType( wxDataFormatId type )
+{
+ PrepareFormats();
+ m_type = type;
+
+ if (m_type == wxDF_TEXT)
+ m_format = g_textAtom;
+ else
+ if (m_type == wxDF_BITMAP)
+ m_format = g_pngAtom;
+ else
+ if (m_type == wxDF_FILENAME)
+ m_format = g_fileAtom;
+ else
+ {
+ wxFAIL_MSG( wxT("invalid dataformat") );
+ }
+}
+
+wxDataFormatId wxDataFormat::GetType() const
+{
+ return m_type;
+}
+
+wxString wxDataFormat::GetId() const
+{
+ wxString ret( gdk_atom_name( m_format ) ); // this will convert from ascii to Unicode
+ return ret;
+}
+
+void wxDataFormat::SetId( NativeFormat format )
+{
+ PrepareFormats();
+ m_format = format;
+
+ if (m_format == g_textAtom)
+ m_type = wxDF_TEXT;
+ else
+ if (m_format == g_pngAtom)
+ m_type = wxDF_BITMAP;
+ else
+ if (m_format == g_fileAtom)
+ m_type = wxDF_FILENAME;
+ else
+ m_type = wxDF_PRIVATE;
+}
+
+void wxDataFormat::SetId( const wxChar *id )
+{
+ PrepareFormats();
+ m_type = wxDF_PRIVATE;
+ wxString tmp( id );
+ m_format = gdk_atom_intern( wxMBSTRINGCAST tmp.mbc_str(), FALSE ); // what is the string cast for?
+}
+
+void wxDataFormat::PrepareFormats()
+{
+ // VZ: GNOME included in RedHat 6.1 uses the MIME types below and not the
+ // atoms STRING and file:ALL as the old code was, but normal X apps
+ // use STRING for text selection when transfering the data via
+ // clipboard, for example, so do use STRING for now (GNOME apps will
+ // probably support STRING as well for compatibility anyhow), but use
+ // text/uri-list for file dnd because compatibility is not important
+ // here (with whom?)
+ if (!g_textAtom)
+ g_textAtom = gdk_atom_intern( "STRING" /* "text/plain" */, FALSE );
+ if (!g_pngAtom)
+ g_pngAtom = gdk_atom_intern( "image/png", FALSE );
+ if (!g_fileAtom)
+ g_fileAtom = gdk_atom_intern( "text/uri-list", FALSE );
+}
//-------------------------------------------------------------------------
// wxDataObject
//-------------------------------------------------------------------------
-IMPLEMENT_ABSTRACT_CLASS( wxDataObject, wxObject )
+wxDataObject::wxDataObject()
+{
+}
-// ----------------------------------------------------------------------------
-// wxTextDataObject
-// ----------------------------------------------------------------------------
+bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir) const
+{
+ size_t nFormatCount = GetFormatCount(dir);
+ if ( nFormatCount == 1 )
+ {
+ return format == GetPreferredFormat();
+ }
+ else
+ {
+ wxDataFormat *formats = new wxDataFormat[nFormatCount];
+ GetAllFormats(formats,dir);
+
+ size_t n;
+ for ( n = 0; n < nFormatCount; n++ )
+ {
+ if ( formats[n] == format )
+ break;
+ }
+
+ delete [] formats;
-IMPLEMENT_DYNAMIC_CLASS( wxTextDataObject, wxDataObject )
+ // found?
+ return n < nFormatCount;
+ }
+}
// ----------------------------------------------------------------------------
// wxFileDataObject
// ----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS( wxFileDataObject, wxDataObject )
+bool wxFileDataObject::GetDataHere(void *buf) const
+{
+ wxString filenames;
+
+ for (size_t i = 0; i < m_filenames.GetCount(); i++)
+ {
+ filenames += m_filenames[i];
+ filenames += (wxChar) 0;
+ }
+
+ memcpy( buf, filenames.mbc_str(), filenames.Len() + 1 );
+
+ return TRUE;
+}
+
+size_t wxFileDataObject::GetDataSize() const
+{
+ size_t res = 0;
+
+ for (size_t i = 0; i < m_filenames.GetCount(); i++)
+ {
+ res += m_filenames[i].Len();
+ res += 1;
+ }
+
+ return res + 1;
+}
+
+bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *buf)
+{
+ // VZ: old format
+#if 0
+ // filenames are stores as a string with #0 as deliminators
+ const char *filenames = (const char*) buf;
+ size_t pos = 0;
+ for(;;)
+ {
+ if (filenames[0] == 0)
+ break;
+ if (pos >= size)
+ break;
+ wxString file( filenames ); // this returns the first file
+ AddFile( file );
+ pos += file.Len()+1;
+ filenames += file.Len()+1;
+ }
+#else // 1
+ m_filenames.Empty();
+
+ // the text/uri-list format is a sequence of URIs (filenames prefixed by
+ // "file:" as far as I see) delimited by "\r\n" of total length size
+ // (I wonder what happens if the file has '\n' in its filename??)
+ wxString filename;
+ for ( const char *p = (const char *)buf; ; p++ )
+ {
+ // some broken programs (testdnd GTK+ sample!) omit the trailing
+ // "\r\n", so check for '\0' explicitly here instead of doing it in
+ // the loop statement to account for it
+ if ( (*p == '\r' && *(p+1) == '\n') || !*p )
+ {
+ size_t lenPrefix = 5; // strlen("file:")
+ if ( filename.Left(lenPrefix).MakeLower() == _T("file:") )
+ {
+ // sometimes the syntax is "file:filename", sometimes it's
+ // URL-like: "file://filename" - deal with both
+ if ( filename[lenPrefix] == _T('/') &&
+ filename[lenPrefix + 1] == _T('/') )
+ {
+ // skip the slashes
+ lenPrefix += 2;
+ }
+
+ AddFile(filename.c_str() + lenPrefix);
+ filename.Empty();
+ }
+ else
+ {
+ wxLogDebug(_T("Unsupported URI '%s' in wxFileDataObject"),
+ filename.c_str());
+ }
+
+ if ( !*p )
+ break;
+
+ // skip '\r'
+ p++;
+ }
+ else
+ {
+ filename += *p;
+ }
+ }
+#endif // 0/1
+
+ return TRUE;
+}
+
+void wxFileDataObject::AddFile( const wxString &filename )
+{
+ m_filenames.Add( filename );
+}
// ----------------------------------------------------------------------------
// wxBitmapDataObject
// ----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS( wxBitmapDataObject, wxDataObject )
+wxBitmapDataObject::wxBitmapDataObject()
+{
+ Init();
+}
-// ----------------------------------------------------------------------------
-// wxPrivateDataObject
-// ----------------------------------------------------------------------------
+wxBitmapDataObject::wxBitmapDataObject( const wxBitmap& bitmap )
+ : wxBitmapDataObjectBase(bitmap)
+{
+ Init();
-IMPLEMENT_DYNAMIC_CLASS( wxPrivateDataObject, wxDataObject )
+ DoConvertToPng();
+}
-void wxPrivateDataObject::SetData( const char *data, size_t size )
+wxBitmapDataObject::~wxBitmapDataObject()
{
- m_size = size;
-
- if (m_data) delete[] m_data;
-
- m_data = new char[size];
+ Clear();
+}
- memcpy( m_data, data, size );
+void wxBitmapDataObject::SetBitmap( const wxBitmap &bitmap )
+{
+ ClearAll();
+
+ wxBitmapDataObjectBase::SetBitmap(bitmap);
+
+ DoConvertToPng();
+}
+
+bool wxBitmapDataObject::GetDataHere(void *buf) const
+{
+ if ( !m_pngSize )
+ {
+ wxFAIL_MSG( wxT("attempt to copy empty bitmap failed") );
+
+ return FALSE;
+ }
+
+ memcpy(buf, m_pngData, m_pngSize);
+
+ return TRUE;
+}
+
+bool wxBitmapDataObject::SetData(size_t size, const void *buf)
+{
+ Clear();
+
+#if wxUSE_LIBPNG
+ m_pngSize = size;
+ m_pngData = malloc(m_pngSize);
+
+ memcpy( m_pngData, buf, m_pngSize );
+
+ wxMemoryInputStream mstream( (char*) m_pngData, m_pngSize );
+ wxImage image;
+ wxPNGHandler handler;
+ if ( !handler.LoadFile( &image, mstream ) )
+ {
+ return FALSE;
+ }
+
+ m_bitmap = image.ConvertToBitmap();
+
+ return m_bitmap.Ok();
+#else
+ return FALSE;
+#endif
}
+void wxBitmapDataObject::DoConvertToPng()
+{
+#if wxUSE_LIBPNG
+ if (!m_bitmap.Ok())
+ return;
+
+ wxImage image( m_bitmap );
+ wxPNGHandler handler;
+
+ wxCountingOutputStream count;
+ handler.SaveFile( &image, count );
+
+ m_pngSize = count.GetSize() + 100; // sometimes the size seems to vary ???
+ m_pngData = malloc(m_pngSize);
+
+ wxMemoryOutputStream mstream( (char*) m_pngData, m_pngSize );
+ handler.SaveFile( &image, mstream );
+#endif
+}
+
+
projects / wxWidgets.git / blobdiff