///////////////////////////////////////////////////////////////////////////////
-// 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"
+
+#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
+//-------------------------------------------------------------------------
+
+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 );
+}
+
+void wxDataFormat::InitFromString( const wxString &id )
+{
+ PrepareFormats();
+ SetId( id );
+}
+
+wxDataFormat::wxDataFormat( NativeFormat format )
+{
+ PrepareFormats();
+ SetId( format );
+}
+
+void wxDataFormat::SetType( wxDataFormatId type )
+{
+ PrepareFormats();
+
+ 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_format = g_textAtom;
+#endif // wxUSE_UNICODE/!wxUSE_UNICODE
+ else
+ if (m_type == wxDF_BITMAP)
+ m_format = g_pngAtom;
+ else
+ if (m_type == wxDF_FILENAME)
+ m_format = g_fileAtom;
+ else
+ if (m_type == wxDF_HTML)
+ m_format = g_htmlAtom;
+ else
+ {
+ wxFAIL_MSG( wxT("invalid dataformat") );
+ }
+}
+
+wxDataFormatId wxDataFormat::GetType() const
+{
+ return m_type;
+}
+
+wxString wxDataFormat::GetId() const
+{
+ wxGtkString atom_name(gdk_atom_name(m_format));
+ return wxString::FromAscii(atom_name);
+}
+
+void wxDataFormat::SetId( NativeFormat format )
+{
+ PrepareFormats();
+ m_format = format;
+
+ 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 wxDataFormat::SetId( const wxString& id )
+{
+ PrepareFormats();
+ m_type = wxDF_PRIVATE;
+ m_format = gdk_atom_intern( id.ToAscii(), FALSE );
+}
+
+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 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)
+ {
+#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
+}
+
+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;
+
+ // found?
+ return n < nFormatCount;
+ }
+}
// ----------------------------------------------------------------------------
// wxTextDataObject
// ----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS( wxTextDataObject, wxDataObject )
+#if wxUSE_UNICODE
+
+void
+wxTextDataObject::GetAllFormats(wxDataFormat *formats,
+ wxDataObjectBase::Direction WXUNUSED(dir)) const
+{
+ *formats++ = GetPreferredFormat();
+ *formats = g_altTextAtom;
+}
+
+#endif // wxUSE_UNICODE
// ----------------------------------------------------------------------------
// 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 += wxT("file:");
+ filenames += m_filenames[i];
+ filenames += wxT("\r\n");
+ }
+
+ memcpy( buf, filenames.mbc_str(), filenames.length() + 1 );
+
+ return true;
+}
+
+size_t wxFileDataObject::GetDataSize() const
+{
+ size_t res = 0;
+
+ 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)
+ }
+
+ return res + 1;
+}
+
+bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *buf)
+{
+ // 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;
+}
+
+void wxFileDataObject::AddFile( const wxString &filename )
+{
+ m_filenames.Add( filename );
+}
// ----------------------------------------------------------------------------
// wxBitmapDataObject
// ----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS( wxBitmapDataObject, wxDataObject )
+wxBitmapDataObject::wxBitmapDataObject()
+{
+ Init();
+}
+
+wxBitmapDataObject::wxBitmapDataObject( const wxBitmap& bitmap )
+ : wxBitmapDataObjectBase(bitmap)
+{
+ Init();
+
+ DoConvertToPng();
+}
+
+wxBitmapDataObject::~wxBitmapDataObject()
+{
+ Clear();
+}
+
+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();
+
+ 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::DoConvertToPng()
+{
+ 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 )
+class wxTextURIListDataObject : public wxDataObjectSimple
+{
+public:
+ wxTextURIListDataObject(const wxString& url)
+ : wxDataObjectSimple(wxDataFormat(g_fileAtom)),
+ m_url(url)
+ {
+ }
+
+ const wxString& GetURL() const { return m_url; }
+ void SetURL(const wxString& url) { m_url = url; }
-wxPrivateDataObject::wxPrivateDataObject()
-{
- m_size = 0;
- m_data = (char*) NULL;
- m_id = wxTheApp->GetAppName();
-}
-
-wxPrivateDataObject::~wxPrivateDataObject()
-{
- if (m_data) delete[] m_data;
+
+ 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<char*>(buf);
+
+ strcpy(dst, m_url.utf8_str());
+
+ return true;
+ }
+
+ virtual bool SetData(size_t len, const void *buf)
+ {
+ const char* const src = static_cast<const char*>(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))
+{
+ // 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);
}
-
-void wxPrivateDataObject::SetData( const char *data, size_t size )
+
+void wxURLDataObject::SetURL(const wxString& url)
{
- m_size = size;
-
- if (m_data) delete[] m_data;
-
- m_data = new char[size];
+ m_dobjURIList->SetURL(url);
+ m_dobjText->SetText(url);
+}
- memcpy( m_data, data, size );
+wxString wxURLDataObject::GetURL() const
+{
+ 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
projects / wxWidgets.git / blobdiff