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drag & drop implemented

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13276 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2001-12-31 16:31:23 +00:00
parent f5705626fe
commit 8400ad1ed6
3 changed files with 66 additions and 202 deletions
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225
include/wx/mac/dnd.h
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@@ -14,9 +14,13 @@
#pragma interface "dnd.h"
#endif
#if wxUSE_DRAG_AND_DROP
#include "wx/defs.h"
#include "wx/object.h"
#include "wx/string.h"
#include "wx/string.h"
#include "wx/dataobj.h"
#include "wx/cursor.h"
//-------------------------------------------------------------------------
@@ -25,212 +29,81 @@
class WXDLLEXPORT wxWindow;
#ifndef __DARWIN__
class WXDLLEXPORT wxDataObject;
class WXDLLEXPORT wxTextDataObject;
class WXDLLEXPORT wxFileDataObject;
#endif
class WXDLLEXPORT wxDropTarget;
class WXDLLEXPORT wxTextDropTarget;
class WXDLLEXPORT wxFileDropTarget;
class WXDLLEXPORT wxDropSource;
#ifndef __DARWIN__
//-------------------------------------------------------------------------
// wxDataObject
//-------------------------------------------------------------------------
class WXDLLEXPORT wxDataObject : public wxObject
{
public:
// all data formats (values are the same as in windows.h, do not change!)
enum StdFormat
{
Invalid,
Text,
Bitmap,
MetafilePict,
Sylk,
Dif,
Tiff,
OemText,
Dib,
Palette,
Pendata,
Riff,
Wave,
UnicodeText,
EnhMetafile,
Hdrop,
Locale,
Max
};
// function to return symbolic name of clipboard format (debug messages)
static const char *GetFormatName(wxDataFormat format);
// ctor & dtor
wxDataObject() {};
~wxDataObject() {};
// pure virtuals to override
// get the best suited format for our data
virtual wxDataFormat GetPreferredFormat() const = 0;
// decide if we support this format (should be one of values of
// StdFormat enumerations or a user-defined format)
virtual bool IsSupportedFormat(wxDataFormat format) const = 0;
// get the (total) size of data
virtual size_t GetDataSize() const = 0;
// copy raw data to provided pointer
virtual void GetDataHere(void *pBuf) const = 0;
};
// ----------------------------------------------------------------------------
// wxTextDataObject is a specialization of wxDataObject for text data
// macros
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTextDataObject : public wxDataObject
{
public:
// ctors
wxTextDataObject() { }
wxTextDataObject(const wxString& strText) : m_strText(strText) { }
void Init(const wxString& strText) { m_strText = strText; }
// implement base class pure virtuals
virtual wxDataFormat GetPreferredFormat() const
{ return wxDF_TEXT; }
virtual bool IsSupportedFormat(wxDataFormat format) const
{ return format == wxDF_TEXT; }
virtual size_t GetDataSize() const
{ return m_strText.Len() + 1; } // +1 for trailing '\0'of course
virtual void GetDataHere(void *pBuf) const
{ memcpy(pBuf, m_strText.c_str(), GetDataSize()); }
private:
wxString m_strText;
};
// ----------------------------------------------------------------------------
// wxFileDataObject is a specialization of wxDataObject for file names
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxFileDataObject : public wxDataObject
{
public:
wxFileDataObject(void) { }
void AddFile( const wxString &file )
{ m_files += file; m_files += ";"; }
// implement base class pure virtuals
virtual wxDataFormat GetPreferredFormat() const
{ return wxDF_FILENAME; }
virtual bool IsSupportedFormat(wxDataFormat format) const
{ return format == wxDF_FILENAME; }
virtual size_t GetDataSize() const
{ return m_files.Len() + 1; } // +1 for trailing '\0'of course
virtual void GetDataHere(void *pBuf) const
{ memcpy(pBuf, m_files.c_str(), GetDataSize()); }
private:
wxString m_files;
};
#endif
// this macro may be used instead for wxDropSource ctor arguments: it will use
// the icon 'name' from an XPM file under GTK, but will expand to something
// else under MSW. If you don't use it, you will have to use #ifdef in the
// application code.
#define wxDROP_ICON(name) wxICON(name)
//-------------------------------------------------------------------------
// wxDropTarget
//-------------------------------------------------------------------------
class WXDLLEXPORT wxDropTarget: public wxObject
class WXDLLEXPORT wxDropTarget: public wxDropTargetBase
{
public:
wxDropTarget();
~wxDropTarget();
virtual void OnEnter() { }
virtual void OnLeave() { }
virtual bool OnDrop( wxCoord x, wxCoord y, const void *pData ) = 0;
wxDropTarget(wxDataObject *dataObject = (wxDataObject*) NULL );
// protected:
friend class wxWindow;
virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
virtual bool OnDrop(wxCoord x, wxCoord y);
virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
virtual bool GetData();
// Override these to indicate what kind of data you support:
virtual size_t GetFormatCount() const = 0;
virtual wxDataFormat GetFormat(size_t n) const = 0;
bool CurrentDragHasSupportedFormat() ;
void SetCurrentDrag( DragReference drag ) { m_currentDrag = drag ; }
DragReference GetCurrentDrag() { return m_currentDrag ; }
protected :
DragReference m_currentDrag ;
};
#ifndef __DARWIN__
//-------------------------------------------------------------------------
// wxTextDropTarget
//-------------------------------------------------------------------------
class WXDLLEXPORT wxTextDropTarget: public wxDropTarget
{
public:
wxTextDropTarget() {};
virtual bool OnDrop( wxCoord x, wxCoord y, const void *pData );
virtual bool OnDropText( wxCoord x, wxCoord y, const char *psz );
protected:
virtual size_t GetFormatCount() const;
virtual wxDataFormat GetFormat(size_t n) const;
};
// ----------------------------------------------------------------------------
// A drop target which accepts files (dragged from File Manager or Explorer)
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxFileDropTarget: public wxDropTarget
{
public:
wxFileDropTarget() {};
virtual bool OnDrop(wxCoord x, wxCoord y, const void *pData);
virtual bool OnDropFiles( wxCoord x, wxCoord y,
size_t nFiles, const char * const aszFiles[]);
protected:
virtual size_t GetFormatCount() const;
virtual wxDataFormat GetFormat(size_t n) const;
};
#endif
//-------------------------------------------------------------------------
// wxDropSource
//-------------------------------------------------------------------------
class WXDLLEXPORT wxDropSource: public wxObject
class WXDLLEXPORT wxDropSource: public wxDropSourceBase
{
public:
public:
/* constructor. set data later with SetData() */
wxDropSource( wxWindow *win = (wxWindow *)NULL,
const wxIcon &copy = wxNullIcon,
const wxIcon &move = wxNullIcon,
const wxIcon &none = wxNullIcon);
wxDropSource( wxWindow *win );
wxDropSource( wxDataObject &data, wxWindow *win );
~wxDropSource(void);
void SetData( wxDataObject &data );
wxDragResult DoDragDrop( bool bAllowMove = FALSE );
virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; };
/* constructor for setting one data object */
wxDropSource( wxDataObject& data,
wxWindow *win,
const wxIcon &copy = wxNullIcon,
const wxIcon &move = wxNullIcon,
const wxIcon &none = wxNullIcon);
protected:
wxDataObject *m_data;
~wxDropSource();
/* start drag action */
virtual wxDragResult DoDragDrop( bool bAllowMove = FALSE );
wxWindow* GetWindow() { return m_window ; }
void SetCurrentDrag( DragReference drag ) { m_currentDrag = drag ; }
DragReference GetCurrentDrag() { return m_currentDrag ; }
protected :
wxWindow *m_window;
DragReference m_currentDrag ;
};
#endif
// D&D
#endif
//_WX_DND_H_