X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e5403d7c573d45fcfef73959c41fda93aea1d07f..9513c5b609740c15322f2284e5e8b9609eeaa069:/include/wx/gtk/dnd.h diff --git a/include/wx/gtk/dnd.h b/include/wx/gtk/dnd.h index 7f72906e47..c2210c23a3 100644 --- a/include/wx/gtk/dnd.h +++ b/include/wx/gtk/dnd.h @@ -2,23 +2,27 @@ // Name: dnd.h // Purpose: declaration of the wxDropTarget class // Author: Robert Roebling -// RCS-ID: +// RCS-ID: $Id$ // Copyright: (c) 1998 Vadim Zeitlin, Robert Roebling -// Licence: wxWindows license +// Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// #ifndef __GTKDNDH__ #define __GTKDNDH__ -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma interface #endif -#include "wx/defs.h" +#if wxUSE_DRAG_AND_DROP + #include "wx/object.h" #include "wx/string.h" +#include "wx/dataobj.h" #include "wx/cursor.h" +#include "wx/icon.h" +#include "wx/gdicmn.h" //------------------------------------------------------------------------- // classes @@ -26,229 +30,106 @@ class wxWindow; -class wxDataObject; -class wxTextDataObject; -class wxFileDataObject; - class wxDropTarget; class wxTextDropTarget; class wxFileDropTarget; class wxDropSource; -//------------------------------------------------------------------------- -// wxDataObject -//------------------------------------------------------------------------- - -class 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 -// ---------------------------------------------------------------------------- - -class 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 +// macros // ---------------------------------------------------------------------------- -class wxFileDataObject : public wxDataObject -{ -public: - - wxFileDataObject(void) { } - void AddFile( const wxString &file ) - { m_files += file; m_files += '\0'; } - - // 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(); } // no trailing '\0' - virtual void GetDataHere(void *pBuf) const - { memcpy(pBuf, m_files.c_str(), GetDataSize()); } +// 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) -private: - wxString m_files; - -}; //------------------------------------------------------------------------- // wxDropTarget //------------------------------------------------------------------------- -class wxDropTarget: public wxObject +class wxDropTarget: public wxDropTargetBase { - public: +public: + wxDropTarget(wxDataObject *dataObject = (wxDataObject*) NULL ); - wxDropTarget(); - ~wxDropTarget(); - - virtual void OnEnter() { } - virtual void OnLeave() { } - virtual bool OnDrop( long x, long y, const void *pData ) = 0; + 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(); // implementation - - int m_size; - - // Override these to indicate what kind of data you support: - - virtual size_t GetFormatCount() const = 0; - virtual wxDataFormat GetFormat(size_t n) const = 0; - - void Drop( GdkEventDropDataAvailable *event, int x, int y ); + + GdkAtom GetMatchingPair(); + void RegisterWidget( GtkWidget *widget ); void UnregisterWidget( GtkWidget *widget ); + + GdkDragContext *m_dragContext; + GtkWidget *m_dragWidget; + GtkSelectionData *m_dragData; + guint m_dragTime; + bool m_firstMotion; // gdk has no "gdk_drag_enter" event + + void SetDragContext( GdkDragContext *dc ) { m_dragContext = dc; } + void SetDragWidget( GtkWidget *w ) { m_dragWidget = w; } + void SetDragData( GtkSelectionData *sd ) { m_dragData = sd; } + void SetDragTime( guint time ) { m_dragTime = time; } }; //------------------------------------------------------------------------- -// wxTextDropTarget +// wxDropSource //------------------------------------------------------------------------- -class wxTextDropTarget: public wxDropTarget +class wxDropSource: public wxDropSourceBase { - public: - - wxTextDropTarget() {}; - virtual bool OnDrop( long x, long y, const void *pData ); - virtual bool OnDropText( long x, long y, const char *psz ); - - protected: - - virtual size_t GetFormatCount() const; - virtual wxDataFormat GetFormat(size_t n) const; -}; +public: + // constructor. set data later with SetData() + wxDropSource( wxWindow *win = (wxWindow *)NULL, + const wxIcon © = wxNullIcon, + const wxIcon &move = wxNullIcon, + const wxIcon &none = wxNullIcon); -// ---------------------------------------------------------------------------- -// A drop target which accepts files (dragged from File Manager or Explorer) -// ---------------------------------------------------------------------------- + // constructor for setting one data object + wxDropSource( wxDataObject& data, + wxWindow *win, + const wxIcon © = wxNullIcon, + const wxIcon &move = wxNullIcon, + const wxIcon &none = wxNullIcon); -class wxFileDropTarget: public wxDropTarget -{ - public: - - wxFileDropTarget() {}; - - virtual bool OnDrop(long x, long y, const void *pData); - virtual bool OnDropFiles( long x, long y, - size_t nFiles, const char * const aszFiles[]); - - protected: - - virtual size_t GetFormatCount() const; - virtual wxDataFormat GetFormat(size_t n) const; -}; + virtual ~wxDropSource(); -//------------------------------------------------------------------------- -// wxDropSource -//------------------------------------------------------------------------- + // start drag action + virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly); - enum wxDragResult - { - wxDragError, // error prevented the d&d operation from completing - wxDragNone, // drag target didn't accept the data - wxDragCopy, // the data was successfully copied - wxDragMove, // the data was successfully moved - wxDragCancel // the operation was cancelled by user (not an error) - }; + // GTK implementation + void RegisterWindow(); + void UnregisterWindow(); -class wxDropSource: public wxObject -{ - public: - - 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; }; - - protected: - - friend void gtk_drag_callback( GtkWidget *widget, GdkEvent *event, wxDropSource *source ); - - void RegisterWindow(void); - void UnregisterWindow(void); - - GtkWidget *m_widget; - wxWindow *m_window; - wxDragResult m_retValue; - wxDataObject *m_data; - - wxCursor m_defaultCursor; - wxCursor m_goaheadCursor; + void PrepareIcon( int action, GdkDragContext *context ); + + GtkWidget *m_widget; + GtkWidget *m_iconWindow; + GdkDragContext *m_dragContext; + wxWindow *m_window; + + wxDragResult m_retValue; + wxIcon m_iconCopy, + m_iconMove, + m_iconNone; + + bool m_waiting; + +private: + // common part of both ctors + void SetIcons(const wxIcon& copy, + const wxIcon& move, + const wxIcon& none); }; -#endif - //__GTKDNDH__ +#endif // wxUSE_DRAG_AND_DROP + +#endif //__GTKDNDH__