///////////////////////////////////////////////////////////////////////////////
-// Name: dataobj.h
-// Purpose: declaration of the wxDataObject class
+// Name: gtk/dataobj.h
+// Purpose: declaration of the wxDataObject
// Author: Robert Roebling
// RCS-ID: $Id$
-// Copyright: (c) 1998 Vadim Zeitlin, Robert Roebling
+// Copyright: (c) 1998, 1999 Vadim Zeitlin, Robert Roebling
// Licence: wxWindows license
///////////////////////////////////////////////////////////////////////////////
-#ifndef __GTKDATAOBJECTH__
-#define __GTKDATAOBJECTH__
+#ifndef _WX_GTK_DATAOBJ_H_
+#define _WX_GTK_DATAOBJ_H_
#ifdef __GNUG__
-#pragma interface
+ #pragma interface "dataobj.h"
#endif
-#include "wx/defs.h"
-#include "wx/object.h"
-#include "wx/string.h"
-#include "wx/bitmap.h"
+// ----------------------------------------------------------------------------
+// wxDataObject is the same as wxDataObjectBase under wxGTK
+// ----------------------------------------------------------------------------
-//-------------------------------------------------------------------------
-// classes
-//-------------------------------------------------------------------------
-
-class wxDataFormat;
-class wxDataBroker;
-class wxDataObject;
-class wxTextDataObject;
-class wxBitmapDataObject;
-class wxPrivateDataObject;
-class wxFileDataObject;
-
-//-------------------------------------------------------------------------
-// wxDataFormat
-//-------------------------------------------------------------------------
-
-class wxDataFormat
-{
-public:
- // the clipboard formats under GDK are GdkAtoms
- typedef GdkAtom NativeFormat;
-
- wxDataFormat();
- wxDataFormat( wxDataFormatId type );
- wxDataFormat( const wxString &id );
- wxDataFormat( const wxChar *id );
- wxDataFormat( NativeFormat format );
-
- wxDataFormat& operator=(NativeFormat format)
- { SetId(format); return *this; }
- wxDataFormat& operator=(const wxDataFormat& format)
- { SetId(format); return *this; }
-
- // comparison (must have both versions)
- bool operator==(wxDataFormatId type) const
- { return m_type == (wxDataFormatId)type; }
- bool operator!=(wxDataFormatId type) const
- { return m_type != (wxDataFormatId)type; }
- bool operator==(NativeFormat format) const
- { return m_format == (NativeFormat)format; }
- bool operator!=(NativeFormat format) const
- { return m_format != (NativeFormat)format; }
- bool operator==(const wxDataFormat& format) const
- { return m_format == format.m_format; }
- bool operator!=(const wxDataFormat& format) const
- { return m_format != format.m_format; }
-
- // explicit and implicit conversions to NativeFormat which is one of
- // standard data types (implicit conversion is useful for preserving the
- // compatibility with old code)
- NativeFormat GetFormatId() const { return m_format; }
- operator NativeFormat() const { return m_format; }
-
- // this only works with standard ids
- void SetId( wxDataFormatId type );
-
- // this only works with standard ids
- void SetId( NativeFormat format );
-
- // string ids are used for custom types - this SetId() must be used for
- // application-specific formats
- wxString GetId() const;
- void SetId( const wxChar *id );
-
- // implementation
- wxDataFormatId GetType() const;
-
-private:
- wxDataFormatId m_type;
- NativeFormat m_format;
-
- void PrepareFormats();
- void SetType( wxDataFormatId type );
-};
-
-//----------------------------------------------------------------------------
-// wxDataObject
-//----------------------------------------------------------------------------
-
-class wxDataObject : public wxObject
+class wxDataObject : public wxDataObjectBase
{
public:
wxDataObject();
- ~wxDataObject();
-
- virtual wxDataFormat GetPreferredFormat() const = 0;
-
- // get the number of formats we support: it is understood that if we
- // can accept data in some format, then we can render data in this
- // format as well, but the contrary is not necessarily true. For the
- // default value of the argument, all formats we support should be
- // returned, but if outputOnlyToo == FALSE, then we should only return
- // the formats which our SetData() understands
- virtual size_t GetFormatCount(bool outputOnlyToo = TRUE) const
- { return 1; }
-
- // return all formats in the provided array (of size GetFormatCount())
- virtual void GetAllFormats(wxDataFormat *formats,
- bool outputOnlyToo = TRUE) const
- { formats[0] = GetPreferredFormat(); }
-
- // get the (total) size of data for the given format
- virtual size_t GetDataSize(const wxDataFormat& format) const = 0;
-
- // copy raw data (in the specified format) to provided pointer
- virtual bool GetDataHere(const wxDataFormat& format, void *buf) const = 0;
-
- // get data from the buffer (in the given format)
- virtual bool SetData(const wxDataFormat& format, const void *buf) = 0;
-
- // a simpler name which makes more sense for data objects supporting
- // only one format
- wxDataFormat GetFormat() const { return GetPreferredFormat(); }
- // old interface
- // decide if we support this format (can be either standard or custom
- // format) -- now uses GetAllFormats()
- virtual bool IsSupportedFormat(const wxDataFormat& format) const;
-
-private:
- DECLARE_DYNAMIC_CLASS( wxDataObject )
+ virtual bool IsSupportedFormat( const wxDataFormat& format, Direction dir = Get ) const;
};
-//----------------------------------------------------------------------------
-// wxTextDataObject is a specialization of wxDataObject for text data
-//----------------------------------------------------------------------------
-
-class wxTextDataObject : public wxDataObject
-{
-public:
- // ctors
- wxTextDataObject();
- wxTextDataObject(const wxString& strText);
- void Init(const wxString& strText) { m_strText = strText; }
-
- virtual wxDataFormat GetPreferredFormat() const
- { return wxDF_TEXT; }
- virtual bool IsSupportedFormat(const wxDataFormat& format) const
- { return format == wxDF_TEXT; }
-
- virtual size_t GetDataSize(const wxDataFormat& format) const;
- virtual bool GetDataHere(const wxDataFormat& format, void *buf) const;
- virtual bool SetData(const wxDataFormat& format, const void *buf);
-
- // additional helpers
- void SetText(const wxString& strText) { m_strText = strText; }
- wxString GetText() const { return m_strText; }
-
-private:
- wxString m_strText;
-
-private:
- DECLARE_DYNAMIC_CLASS( wxTextDataObject )
-};
-
-//----------------------------------------------------------------------------
-// wxFileDataObject is a specialization of wxDataObject for file names
-//----------------------------------------------------------------------------
-
-class wxFileDataObject : public wxDataObject
-{
-public:
- wxFileDataObject();
-
- void AddFile( const wxString &file );
- wxString GetFiles() const;
-
- virtual wxDataFormat GetPreferredFormat() const
- { return wxDF_FILENAME; }
- virtual bool IsSupportedFormat(const wxDataFormat& format) const
- { return format == wxDF_FILENAME; }
-
- virtual size_t GetDataSize(const wxDataFormat& format) const;
- virtual bool GetDataHere(const wxDataFormat& format, void *buf) const;
- virtual bool SetData(const wxDataFormat& format, const void *buf);
-
-public:
- wxString m_files;
-
-private:
- DECLARE_DYNAMIC_CLASS( wxFileDataObject )
-};
-
-//----------------------------------------------------------------------------
-// wxBitmapDataObject is a specialization of wxDataObject for bitmaps
-//----------------------------------------------------------------------------
-
-class wxBitmapDataObject : public wxDataObject
-{
-public:
- // ctors
- wxBitmapDataObject();
- wxBitmapDataObject(const wxBitmap& bitmap);
-
- // destr
- ~wxBitmapDataObject();
-
- // set/get our bitmap
- void SetBitmap(const wxBitmap& bitmap);
- const wxBitmap GetBitmap() const { return m_bitmap; }
-
- virtual wxDataFormat GetPreferredFormat() const
- { return wxDF_BITMAP; }
- virtual bool IsSupportedFormat(const wxDataFormat& format) const
- { return format == wxDF_BITMAP; }
-
- virtual size_t GetDataSize(const wxDataFormat& format) const;
- virtual bool GetDataHere(const wxDataFormat& format, void *buf) const;
-
- // sets PNG data
- virtual bool SetData(const wxDataFormat& format, const void *buf);
-
- // sets PNG data
- virtual void SetPngData(const void *buf, size_t size);
-
- void *GetData()
- { return m_pngData; }
-
-private:
- wxBitmap m_bitmap;
- size_t m_pngSize;
- void *m_pngData;
-
- void DoConvertToPng();
-
-private:
- DECLARE_DYNAMIC_CLASS( wxBitmapDataObject );
-};
-
-#endif
- //__GTKDNDH__
+#endif // _WX_GTK_DATAOBJ_H_
projects / wxWidgets.git / blobdiff