f2593d0dda
gives an assert. Nothing will happen. Added wxTreeCtrl::InsertItem( paret, before, ... ), Correct some places with incorrectly indented code. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5126 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
376 lines
9.0 KiB
C++
376 lines
9.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: dataobj.cpp
|
|
// Purpose: wxDataObject class
|
|
// Author: Robert Roebling
|
|
// Id: $Id$
|
|
// Copyright: (c) 1998 Robert Roebling
|
|
// Licence: wxWindows licence
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifdef __GNUG__
|
|
#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
|
|
//-------------------------------------------------------------------------
|
|
|
|
wxDataObject::wxDataObject()
|
|
{
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxFileDataObject
|
|
// ----------------------------------------------------------------------------
|
|
|
|
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
|
|
// ----------------------------------------------------------------------------
|
|
|
|
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();
|
|
|
|
#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
|
|
}
|
|
|
|
|