da175b2ce4
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2873 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
150 lines
4.0 KiB
C++
150 lines
4.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: dataobj.h
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// Purpose: declaration of the wxDataObject class
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// Author: Julian Smart
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// RCS-ID: $Id$
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// Copyright: (c) 1998 Julian Smart
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DATAOBJ_H_
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#define _WX_DATAOBJ_H_
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#ifdef __GNUG__
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#pragma interface "dataobj.h"
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#endif
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#include "wx/defs.h"
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#include "wx/object.h"
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#include "wx/string.h"
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#include "wx/bitmap.h"
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//-------------------------------------------------------------------------
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// classes
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//-------------------------------------------------------------------------
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class wxDataFormat;
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class wxDataObject;
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class wxTextDataObject;
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//-------------------------------------------------------------------------
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// wxDataFormat
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//-------------------------------------------------------------------------
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class wxDataFormat : public wxObject
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{
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DECLARE_CLASS( wxDataFormat )
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public:
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wxDataFormat();
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wxDataFormat( wxDataFormatId type );
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wxDataFormat( const wxString &id );
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wxDataFormat( const wxChar *id );
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wxDataFormat( const wxDataFormat &format );
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wxDataFormat( const Atom atom );
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void SetType( wxDataFormatId type );
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wxDataFormatId GetType() const;
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/* the string Id identifies the format of clipboard or DnD data. a word
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* processor would e.g. add a wxTextDataObject and a wxPrivateDataObject
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* to the clipboard - the latter with the Id "application/wxword", an
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* image manipulation program would put a wxBitmapDataObject and a
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* wxPrivateDataObject to the clipboard - the latter with "image/png". */
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wxString GetId() const;
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void SetId( const wxChar *id );
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Atom GetAtom();
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void SetAtom(Atom atom) { m_hasAtom = TRUE; m_atom = atom; }
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// implicit conversion to wxDataFormatId
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operator wxDataFormatId() const { return m_type; }
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bool operator==(wxDataFormatId type) const { return m_type == type; }
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bool operator!=(wxDataFormatId type) const { return m_type != type; }
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private:
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wxDataFormatId m_type;
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wxString m_id;
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bool m_hasAtom;
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Atom m_atom;
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};
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//----------------------------------------------------------------------------
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// wxDataObject to be placed in wxDataBroker
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//----------------------------------------------------------------------------
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class wxDataObject : public wxObject
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{
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DECLARE_DYNAMIC_CLASS( wxDataObject )
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public:
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/* constructor */
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wxDataObject();
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/* destructor */
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~wxDataObject();
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/* write data to dest */
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virtual void WriteData( void *dest ) const = 0;
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/* get size of data */
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virtual size_t GetSize() const = 0;
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/* implementation */
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wxDataFormat &GetFormat();
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wxDataFormatId GetFormatType() const;
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wxString GetFormatId() const;
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Atom GetFormatAtom() const;
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wxDataFormat m_format;
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};
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//----------------------------------------------------------------------------
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// wxTextDataObject is a specialization of wxDataObject for text data
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//----------------------------------------------------------------------------
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class wxTextDataObject : public wxDataObject
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{
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DECLARE_DYNAMIC_CLASS( wxTextDataObject )
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public:
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/* default constructor. call SetText() later or override
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WriteData() and GetSize() for working on-demand */
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wxTextDataObject();
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/* constructor */
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wxTextDataObject( const wxString& data );
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/* set current text data */
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void SetText( const wxString& data );
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/* get current text data */
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wxString GetText() const;
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/* by default calls WriteString() with string set by constructor or
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by SetText(). can be overridden for working on-demand */
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virtual void WriteData( void *dest ) const;
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/* by default, returns length of string as set by constructor or
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by SetText(). can be overridden for working on-demand */
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virtual size_t GetSize() const;
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/* write string to dest */
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void WriteString( const wxString &str, void *dest ) const;
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/* implementation */
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wxString m_data;
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};
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#endif
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//_WX_DATAOBJ_H_
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