X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ab8884aca6f480f3568167c7fe592a03e7e102b2..1abfa172c547a37751e598084fb8d541071471a3:/src/gtk/dataobj.cpp diff --git a/src/gtk/dataobj.cpp b/src/gtk/dataobj.cpp index 353633fc7c..6ea3dc4f2f 100644 --- a/src/gtk/dataobj.cpp +++ b/src/gtk/dataobj.cpp @@ -1,69 +1,405 @@ /////////////////////////////////////////////////////////////////////////////// -// 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; + +//------------------------------------------------------------------------- +// 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 + if (m_type == wxDF_TEXT || m_type == wxDF_UNICODETEXT) + m_format = g_textAtom; +#endif + 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 +{ + 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 + 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 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) +#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 ); +} //------------------------------------------------------------------------- // 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(); +} -// ---------------------------------------------------------------------------- -// wxPrivateDataObject -// ---------------------------------------------------------------------------- +wxBitmapDataObject::wxBitmapDataObject( const wxBitmap& bitmap ) + : wxBitmapDataObjectBase(bitmap) +{ + Init(); -IMPLEMENT_DYNAMIC_CLASS( wxPrivateDataObject, wxDataObject ) + DoConvertToPng(); +} -wxPrivateDataObject::wxPrivateDataObject() -{ - m_size = 0; - m_data = (char*) NULL; - m_id = wxTheApp->GetAppName(); +wxBitmapDataObject::~wxBitmapDataObject() +{ + Clear(); } - -wxPrivateDataObject::~wxPrivateDataObject() -{ - if (m_data) delete[] m_data; + +void wxBitmapDataObject::SetBitmap( const wxBitmap &bitmap ) +{ + ClearAll(); + + wxBitmapDataObjectBase::SetBitmap(bitmap); + + DoConvertToPng(); } - -void wxPrivateDataObject::SetData( const char *data, size_t size ) + +bool wxBitmapDataObject::GetDataHere(void *buf) const { - m_size = size; - - if (m_data) delete[] m_data; - - m_data = new char[size]; + 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.Ok(); +} + +void wxBitmapDataObject::DoConvertToPng() +{ + if ( !m_bitmap.Ok() ) + 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); - memcpy( m_data, data, size ); + wxMemoryOutputStream mstream((char*) m_pngData, m_pngSize); + image.SaveFile(mstream, wxBITMAP_TYPE_PNG); } +#endif // wxUSE_DATAOBJ