X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/90e586840b79c936751bf8305ea4f51c6c283791..62795f413a7222863b4aee76c08764071f94bd87:/src/gtk/dataobj.cpp diff --git a/src/gtk/dataobj.cpp b/src/gtk/dataobj.cpp index cbcce96e5f..9a3960797d 100644 --- a/src/gtk/dataobj.cpp +++ b/src/gtk/dataobj.cpp @@ -1,485 +1,519 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: dataobj.cpp +// Name: src/gtk/dataobj.cpp // Purpose: wxDataObject class // Author: Robert Roebling -// Id: $Id$ // Copyright: (c) 1998 Robert Roebling -// Licence: wxWindows licence +// Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "dataobj.h" -#endif +// For compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.h" + +#if wxUSE_DATAOBJ #include "wx/dataobj.h" -#include "wx/app.h" -#include "wx/debug.h" -#include "gdk/gdk.h" +#ifndef WX_PRECOMP + #include "wx/log.h" + #include "wx/app.h" + #include "wx/image.h" +#endif + +#include "wx/mstream.h" +#include "wx/uri.h" +#include "wx/gtk/private.h" //------------------------------------------------------------------------- // global data //------------------------------------------------------------------------- GdkAtom g_textAtom = 0; +GdkAtom g_altTextAtom = 0; +GdkAtom g_pngAtom = 0; +GdkAtom g_fileAtom = 0; +GdkAtom g_htmlAtom = 0; //------------------------------------------------------------------------- // wxDataFormat //------------------------------------------------------------------------- -IMPLEMENT_CLASS(wxDataFormat, wxObject) - wxDataFormat::wxDataFormat() { - if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE ); + // 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_hasAtom = FALSE; - m_atom = (GdkAtom) 0; + m_format = (GdkAtom) 0; } -wxDataFormat::wxDataFormat( wxDataType type ) +wxDataFormat::wxDataFormat( wxDataFormatId type ) { - if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE ); + PrepareFormats(); SetType( type ); } -wxDataFormat::wxDataFormat( const wxChar *id ) +void wxDataFormat::InitFromString( const wxString &id ) { - if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE ); + PrepareFormats(); SetId( id ); } -wxDataFormat::wxDataFormat( const wxString &id ) +wxDataFormat::wxDataFormat( NativeFormat format ) { - if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE ); - SetId( id ); + PrepareFormats(); + SetId( format ); } -wxDataFormat::wxDataFormat( wxDataFormat &format ) +void wxDataFormat::SetType( wxDataFormatId type ) { - if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE ); - m_type = format.GetType(); - m_id = format.GetId(); - m_hasAtom = TRUE; - m_atom = format.GetAtom(); -} + PrepareFormats(); -wxDataFormat::wxDataFormat( const GdkAtom atom ) -{ - if (!g_textAtom) g_textAtom = gdk_atom_intern( "STRING", FALSE ); - m_hasAtom = TRUE; - - m_atom = atom; - - if (m_atom == g_textAtom) - { - m_type = wxDF_TEXT; - } else - if (m_atom == GDK_TARGET_BITMAP) - { - m_type = wxDF_BITMAP; - } else - { - m_type = wxDF_PRIVATE; - m_id = gdk_atom_name( m_atom ); - - if (m_id == _T("file:ALL")) - { - m_type = wxDF_FILENAME; - } - } -} - -void wxDataFormat::SetType( wxDataType type ) -{ m_type = type; - + +#if wxUSE_UNICODE + if (m_type == wxDF_UNICODETEXT) + m_format = g_textAtom; + else if (m_type == wxDF_TEXT) + m_format = g_altTextAtom; +#else // !wxUSE_UNICODE + // notice that we don't map wxDF_UNICODETEXT to g_textAtom here, this + // would lead the code elsewhere to treat data objects with this format as + // containing UTF-8 data which is not true if (m_type == wxDF_TEXT) - { - m_id = _T("STRING"); - } + m_format = g_textAtom; +#endif // wxUSE_UNICODE/!wxUSE_UNICODE else if (m_type == wxDF_BITMAP) - { - m_id = _T("BITMAP"); - } + m_format = g_pngAtom; else if (m_type == wxDF_FILENAME) - { - m_id = _T("file:ALL"); - } + m_format = g_fileAtom; + else + if (m_type == wxDF_HTML) + m_format = g_htmlAtom; else { - wxFAIL_MSG( _T("invalid dataformat") ); + wxFAIL_MSG( wxT("invalid dataformat") ); } - - m_hasAtom = FALSE; } - -wxDataType wxDataFormat::GetType() const + +wxDataFormatId wxDataFormat::GetType() const { return m_type; } wxString wxDataFormat::GetId() const { - return m_id; -} - -void wxDataFormat::SetId( const wxChar *id ) -{ - m_type = wxDF_PRIVATE; - m_id = id; - m_hasAtom = FALSE; + wxGtkString atom_name(gdk_atom_name(m_format)); + return wxString::FromAscii(atom_name); } -GdkAtom wxDataFormat::GetAtom() +void wxDataFormat::SetId( NativeFormat format ) { - if (!m_hasAtom) - { - m_hasAtom = TRUE; - - if (m_type == wxDF_TEXT) - { - m_atom = g_textAtom; - } - else - if (m_type == wxDF_BITMAP) - { - m_atom = GDK_TARGET_BITMAP; - } - else - if (m_type == wxDF_PRIVATE) - { - m_atom = gdk_atom_intern( MBSTRINGCAST m_id.mbc_str(), FALSE ); - } - else - if (m_type == wxDF_FILENAME) - { - m_atom = gdk_atom_intern( "file:ALL", FALSE ); - } - else - { - m_hasAtom = FALSE; - m_atom = (GdkAtom) 0; - } - } - - return m_atom; -} - -//------------------------------------------------------------------------- -// wxDataBroker -//------------------------------------------------------------------------- - -IMPLEMENT_CLASS(wxDataBroker,wxObject) + PrepareFormats(); + m_format = format; -wxDataBroker::wxDataBroker() -{ - m_dataObjects.DeleteContents(TRUE); - m_preferred = 0; + if (m_format == g_textAtom) +#if wxUSE_UNICODE + m_type = wxDF_UNICODETEXT; +#else + m_type = wxDF_TEXT; +#endif + else + if (m_format == g_altTextAtom) + 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 + if (m_format == g_htmlAtom) + m_type = wxDF_HTML; + else + m_type = wxDF_PRIVATE; } -void wxDataBroker::Add( wxDataObject *dataObject, bool preferred ) -{ - if (preferred) m_preferred = m_dataObjects.GetCount(); - m_dataObjects.Append( dataObject ); -} - -size_t wxDataBroker::GetFormatCount() const -{ - return m_dataObjects.GetCount(); -} - -wxDataFormat &wxDataBroker::GetPreferredFormat() const -{ - wxNode *node = m_dataObjects.Nth( m_preferred ); - - wxASSERT( node ); - - wxDataObject* data_obj = (wxDataObject*)node->Data(); - - return data_obj->GetFormat(); -} - -wxDataFormat &wxDataBroker::GetNthFormat( size_t nth ) const -{ - wxNode *node = m_dataObjects.Nth( nth ); - - wxASSERT( node ); - - wxDataObject* data_obj = (wxDataObject*)node->Data(); - - return data_obj->GetFormat(); -} - -bool wxDataBroker::IsSupportedFormat( wxDataFormat &format ) const -{ - wxNode *node = m_dataObjects.First(); - while (node) - { - wxDataObject *dobj = (wxDataObject*)node->Data(); - - if (dobj->GetFormat().GetAtom() == format.GetAtom()) - { - return TRUE; - } - - node = node->Next(); - } - - return FALSE; -} - -size_t wxDataBroker::GetSize( wxDataFormat& format ) const +void wxDataFormat::SetId( const wxString& id ) { - wxNode *node = m_dataObjects.First(); - while (node) - { - wxDataObject *dobj = (wxDataObject*)node->Data(); - - if (dobj->GetFormat().GetAtom() == format.GetAtom()) - { - return dobj->GetSize(); - } - - node = node->Next(); - } - - return 0; + PrepareFormats(); + m_type = wxDF_PRIVATE; + m_format = gdk_atom_intern( id.ToAscii(), FALSE ); } - -void wxDataBroker::WriteData( wxDataFormat& format, void *dest ) const + +void wxDataFormat::PrepareFormats() { - wxNode *node = m_dataObjects.First(); - while (node) + // 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 transferring 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) { - wxDataObject *dobj = (wxDataObject*)node->Data(); - - if (dobj->GetFormat().GetAtom() == format.GetAtom()) - { - dobj->WriteData( dest ); - } - - node = node->Next(); +#if wxUSE_UNICODE + g_textAtom = gdk_atom_intern( "UTF8_STRING", FALSE ); + g_altTextAtom = gdk_atom_intern( "STRING", FALSE ); +#else + g_textAtom = gdk_atom_intern( "STRING" /* "text/plain" */, FALSE ); +#endif } + if (!g_pngAtom) + g_pngAtom = gdk_atom_intern( "image/png", FALSE ); + if (!g_fileAtom) + g_fileAtom = gdk_atom_intern( "text/uri-list", FALSE ); + if (!g_htmlAtom) + g_htmlAtom = gdk_atom_intern( "text/html", FALSE ); } //------------------------------------------------------------------------- // wxDataObject //------------------------------------------------------------------------- -IMPLEMENT_ABSTRACT_CLASS( wxDataObject, wxObject ) - wxDataObject::wxDataObject() { } - + wxDataObject::~wxDataObject() { + // dtor is empty but needed for Darwin and AIX -- otherwise it doesn't link } -wxDataFormat &wxDataObject::GetFormat() +bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir) const { - return m_format; -} + size_t nFormatCount = GetFormatCount(dir); + if ( nFormatCount == 1 ) + { + return format == GetPreferredFormat(); + } + else + { + wxDataFormat *formats = new wxDataFormat[nFormatCount]; + GetAllFormats(formats,dir); -wxDataType wxDataObject::GetFormatType() const -{ - return m_format.GetType(); -} + size_t n; + for ( n = 0; n < nFormatCount; n++ ) + { + if ( formats[n] == format ) + break; + } -wxString wxDataObject::GetFormatId() const -{ - return m_format.GetId(); -} + delete [] formats; -GdkAtom wxDataObject::GetFormatAtom() const -{ - GdkAtom ret = ((wxDataObject*) this)->m_format.GetAtom(); - return ret; -} + // found? + return n < nFormatCount; + } +} // ---------------------------------------------------------------------------- // wxTextDataObject // ---------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS( wxTextDataObject, wxDataObject ) +#if wxUSE_UNICODE -wxTextDataObject::wxTextDataObject() +void +wxTextDataObject::GetAllFormats(wxDataFormat *formats, + wxDataObjectBase::Direction WXUNUSED(dir)) const { - m_format.SetType( wxDF_TEXT ); + *formats++ = GetPreferredFormat(); + *formats = g_altTextAtom; } -wxTextDataObject::wxTextDataObject( const wxString& data ) -{ - m_format.SetType( wxDF_TEXT ); - - m_data = data; -} +#endif // wxUSE_UNICODE -void wxTextDataObject::SetText( const wxString& data ) -{ - m_data = data; -} +// ---------------------------------------------------------------------------- +// wxFileDataObject +// ---------------------------------------------------------------------------- -wxString wxTextDataObject::GetText() const +bool wxFileDataObject::GetDataHere(void *buf) const { - return m_data; -} + wxString filenames; -void wxTextDataObject::WriteData( void *dest ) const -{ - WriteString( m_data, dest ); -} + for (size_t i = 0; i < m_filenames.GetCount(); i++) + { + filenames += wxT("file:"); + filenames += m_filenames[i]; + filenames += wxT("\r\n"); + } -size_t wxTextDataObject::GetSize() const -{ - return m_data.Len() + 1; + memcpy( buf, filenames.mbc_str(), filenames.length() + 1 ); + + return true; } -void wxTextDataObject::WriteString( const wxString &str, void *dest ) const +size_t wxFileDataObject::GetDataSize() const { - memcpy( dest, str.mb_str(), str.Len()+1 ); -} - -// ---------------------------------------------------------------------------- -// wxFileDataObject -// ---------------------------------------------------------------------------- + size_t res = 0; -IMPLEMENT_DYNAMIC_CLASS( wxFileDataObject, wxDataObject ) + for (size_t i = 0; i < m_filenames.GetCount(); i++) + { + // This is junk in UTF-8 + res += m_filenames[i].length(); + res += 5 + 2; // "file:" (5) + "\r\n" (2) + } -wxFileDataObject::wxFileDataObject() -{ - m_format.SetType( wxDF_FILENAME ); + return res + 1; } -void wxFileDataObject::AddFile( const wxString &file ) -{ - m_files += file; - m_files += (wxChar)0; -} - -wxString wxFileDataObject::GetFiles() const -{ - return m_files; -} - -void wxFileDataObject::WriteData( void *dest ) const +bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *buf) { - memcpy( dest, m_files.mbc_str(), GetSize() ); + // we get data in the text/uri-list format, i.e. as a sequence of URIs + // (filenames prefixed by "file:") delimited by "\r\n". size includes + // the trailing zero (in theory, not for Nautilus in early GNOME + // versions). + + m_filenames.Empty(); + + const gchar *nexttemp = (const gchar*) buf; + for ( ; ; ) + { + int len = 0; + const gchar *temp = nexttemp; + for (;;) + { + if (temp[len] == 0) + { + if (len > 0) + { + // if an app omits '\r''\n' + nexttemp = temp+len; + break; + } + + return true; + } + if (temp[len] == '\r') + { + if (temp[len+1] == '\n') + nexttemp = temp+len+2; + else + nexttemp = temp+len+1; + break; + } + len++; + } + + if (len == 0) + break; + + // required to give it a trailing zero + gchar *uri = g_strndup( temp, len ); + + gchar *fn = g_filename_from_uri( uri, NULL, NULL ); + + g_free( uri ); + + if (fn) + { + AddFile( wxConvFileName->cMB2WX( fn ) ); + g_free( fn ); + } + } + + return true; } - -size_t wxFileDataObject::GetSize() const + +void wxFileDataObject::AddFile( const wxString &filename ) { - return m_files.Len() + 1; + m_filenames.Add( filename ); } - + // ---------------------------------------------------------------------------- // wxBitmapDataObject // ---------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS( wxBitmapDataObject, wxDataObject ) - wxBitmapDataObject::wxBitmapDataObject() { - m_format.SetType( wxDF_BITMAP ); + Init(); } wxBitmapDataObject::wxBitmapDataObject( const wxBitmap& bitmap ) + : wxBitmapDataObjectBase(bitmap) { - m_format.SetType( wxDF_BITMAP ); - - m_bitmap = bitmap; + Init(); + + DoConvertToPng(); } -void wxBitmapDataObject::SetBitmap( const wxBitmap &bitmap ) +wxBitmapDataObject::~wxBitmapDataObject() { - m_bitmap = bitmap; + Clear(); } -wxBitmap wxBitmapDataObject::GetBitmap() const +void wxBitmapDataObject::SetBitmap( const wxBitmap &bitmap ) { - return m_bitmap; + ClearAll(); + + wxBitmapDataObjectBase::SetBitmap(bitmap); + + DoConvertToPng(); } -void wxBitmapDataObject::WriteData( void *dest ) const +bool wxBitmapDataObject::GetDataHere(void *buf) const { - WriteBitmap( m_bitmap, dest ); + if ( !m_pngSize ) + { + wxFAIL_MSG( wxT("attempt to copy empty bitmap failed") ); + + return false; + } + + memcpy(buf, m_pngData, m_pngSize); + + return true; } -size_t wxBitmapDataObject::GetSize() const +bool wxBitmapDataObject::SetData(size_t size, const void *buf) { - return 0; + Clear(); + + wxCHECK_MSG( wxImage::FindHandler(wxBITMAP_TYPE_PNG) != NULL, + false, wxT("You must call wxImage::AddHandler(new wxPNGHandler); to be able to use clipboard with bitmaps!") ); + + m_pngSize = size; + m_pngData = malloc(m_pngSize); + + memcpy(m_pngData, buf, m_pngSize); + + wxMemoryInputStream mstream((char*) m_pngData, m_pngSize); + wxImage image; + if ( !image.LoadFile( mstream, wxBITMAP_TYPE_PNG ) ) + { + return false; + } + + m_bitmap = wxBitmap(image); + + return m_bitmap.IsOk(); } -void wxBitmapDataObject::WriteBitmap( const wxBitmap &bitmap, void *dest ) const +void wxBitmapDataObject::DoConvertToPng() { - memcpy( dest, m_bitmap.GetPixmap(), GetSize() ); + if ( !m_bitmap.IsOk() ) + return; + + wxCHECK_RET( wxImage::FindHandler(wxBITMAP_TYPE_PNG) != NULL, + wxT("You must call wxImage::AddHandler(new wxPNGHandler); to be able to use clipboard with bitmaps!") ); + + wxImage image = m_bitmap.ConvertToImage(); + + wxCountingOutputStream count; + image.SaveFile(count, wxBITMAP_TYPE_PNG); + + m_pngSize = count.GetSize() + 100; // sometimes the size seems to vary ??? + m_pngData = malloc(m_pngSize); + + wxMemoryOutputStream mstream((char*) m_pngData, m_pngSize); + image.SaveFile(mstream, wxBITMAP_TYPE_PNG); } - + // ---------------------------------------------------------------------------- -// wxPrivateDataObject +// wxURLDataObject // ---------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS( wxPrivateDataObject, wxDataObject ) - -wxPrivateDataObject::wxPrivateDataObject() -{ - m_id = _T("application/"); - m_id += wxTheApp->GetAppName(); - - m_format.SetId( m_id ); - - m_size = 0; - m_data = (char*) NULL; -} - -wxPrivateDataObject::~wxPrivateDataObject() -{ - if (m_data) delete[] m_data; -} - -void wxPrivateDataObject::SetId( const wxString& id ) -{ - m_id = id; - m_format.SetId( m_id ); -} - -wxString wxPrivateDataObject::GetId() const -{ - return m_id; -} - -void wxPrivateDataObject::SetData( const char *data, size_t size ) +class wxTextURIListDataObject : public wxDataObjectSimple { - m_size = size; - - if (m_data) delete[] m_data; - - m_data = new char[size]; +public: + wxTextURIListDataObject(const wxString& url) + : wxDataObjectSimple(wxDataFormat(g_fileAtom)), + m_url(url) + { + } - memcpy( m_data, data, size ); -} + const wxString& GetURL() const { return m_url; } + void SetURL(const wxString& url) { m_url = url; } -char* wxPrivateDataObject::GetData() const -{ - return m_data; -} -void wxPrivateDataObject::WriteData( void *dest ) const + virtual size_t GetDataSize() const + { + // It is not totally clear whether we should include "\r\n" at the end + // of the string if there is only one URL or not, but not doing it + // doesn't seem to create any problems, so keep things simple. + return strlen(m_url.utf8_str()) + 1; + } + + virtual bool GetDataHere(void *buf) const + { + char* const dst = static_cast(buf); + + strcpy(dst, m_url.utf8_str()); + + return true; + } + + virtual bool SetData(size_t len, const void *buf) + { + const char* const src = static_cast(buf); + + // The string might be "\r\n"-terminated but this is not necessarily + // the case (e.g. when dragging an URL from Firefox, it isn't). + if ( len > 1 && src[len - 1] == '\n' ) + { + if ( len > 2 && src[len - 2] == '\r' ) + len--; + + len--; + } + + m_url = wxString::FromUTF8(src, len); + + return true; + } + + // Must provide overloads to avoid hiding them (and warnings about it) + virtual size_t GetDataSize(const wxDataFormat&) const + { + return GetDataSize(); + } + virtual bool GetDataHere(const wxDataFormat&, void *buf) const + { + return GetDataHere(buf); + } + virtual bool SetData(const wxDataFormat&, size_t len, const void *buf) + { + return SetData(len, buf); + } + +private: + wxString m_url; +}; + +wxURLDataObject::wxURLDataObject(const wxString& url) : + m_dobjURIList(new wxTextURIListDataObject(url)), + m_dobjText(new wxTextDataObject(url)) { - WriteData( m_data, dest ); + // Use both URL-specific format and a plain text one to ensure that URLs + // can be pasted into any application. + Add(m_dobjURIList, true /* preferred */); + Add(m_dobjText); } -size_t wxPrivateDataObject::GetSize() const +void wxURLDataObject::SetURL(const wxString& url) { - return m_size; + m_dobjURIList->SetURL(url); + m_dobjText->SetText(url); } -void wxPrivateDataObject::WriteData( const char *data, void *dest ) const +wxString wxURLDataObject::GetURL() const { - memcpy( dest, data, GetSize() ); + if ( GetReceivedFormat() == g_fileAtom ) + { + // If we received the URL as an URI, use it. + return m_dobjURIList->GetURL(); + } + else // Otherwise we either got it as text or didn't get anything yet. + { + // In either case using the text format should be fine. + return m_dobjText->GetText(); + } } +#endif // wxUSE_DATAOBJ