X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ab8884aca6f480f3568167c7fe592a03e7e102b2..625cb8c0b1ac12f26265cae2c69d7f510de0edb1:/src/gtk/dataobj.cpp?ds=inline diff --git a/src/gtk/dataobj.cpp b/src/gtk/dataobj.cpp index 353633fc7c..d591070266 100644 --- a/src/gtk/dataobj.cpp +++ b/src/gtk/dataobj.cpp @@ -4,66 +4,372 @@ // 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 + +//------------------------------------------------------------------------- +// 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; + } -IMPLEMENT_DYNAMIC_CLASS( wxTextDataObject, wxDataObject ) + delete [] formats; + + // 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(); + + DoConvertToPng(); +} -IMPLEMENT_DYNAMIC_CLASS( wxPrivateDataObject, wxDataObject ) +wxBitmapDataObject::~wxBitmapDataObject() +{ + Clear(); +} -wxPrivateDataObject::wxPrivateDataObject() -{ - m_size = 0; - m_data = (char*) NULL; - m_id = wxTheApp->GetAppName(); +void wxBitmapDataObject::SetBitmap( const wxBitmap &bitmap ) +{ + ClearAll(); + + wxBitmapDataObjectBase::SetBitmap(bitmap); + + DoConvertToPng(); } - -wxPrivateDataObject::~wxPrivateDataObject() -{ - if (m_data) delete[] m_data; + +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 wxPrivateDataObject::SetData( const char *data, size_t size ) + +void wxBitmapDataObject::DoConvertToPng() { - m_size = size; - - if (m_data) delete[] m_data; - - m_data = new char[size]; +#if wxUSE_LIBPNG + if (!m_bitmap.Ok()) + return; + + wxImage image( m_bitmap ); + wxPNGHandler handler; + + wxCountingOutputStream count; + handler.SaveFile( &image, count ); - memcpy( m_data, data, size ); + 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 } +