125 lines
4 KiB
C++
125 lines
4 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/gtk/dnd.h
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// Purpose: declaration of the wxDropTarget class
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// Author: Robert Roebling
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// Copyright: (c) 1998 Vadim Zeitlin, Robert Roebling
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_GTK_DND_H_
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#define _WX_GTK_DND_H_
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#include "wx/icon.h"
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// ----------------------------------------------------------------------------
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// macros
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// ----------------------------------------------------------------------------
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// this macro may be used instead for wxDropSource ctor arguments: it will use
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// the icon 'name' from an XPM file under GTK, but will expand to something
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// else under MSW. If you don't use it, you will have to use #ifdef in the
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// application code.
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#define wxDROP_ICON(name) wxICON(name)
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//-------------------------------------------------------------------------
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// wxDropTarget
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//-------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxDropTarget: public wxDropTargetBase
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{
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public:
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wxDropTarget(wxDataObject *dataObject = NULL );
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virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
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virtual bool OnDrop(wxCoord x, wxCoord y);
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virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
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virtual bool GetData();
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// Can only be called during OnXXX methods.
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wxDataFormat GetMatchingPair();
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// implementation
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GdkAtom GTKGetMatchingPair(bool quiet = false);
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wxDragResult GTKFigureOutSuggestedAction();
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void GtkRegisterWidget( GtkWidget *widget );
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void GtkUnregisterWidget( GtkWidget *widget );
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GdkDragContext *m_dragContext;
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GtkWidget *m_dragWidget;
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GtkSelectionData *m_dragData;
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unsigned m_dragTime;
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bool m_firstMotion; // gdk has no "gdk_drag_enter" event
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void GTKSetDragContext( GdkDragContext *dc ) { m_dragContext = dc; }
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void GTKSetDragWidget( GtkWidget *w ) { m_dragWidget = w; }
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void GTKSetDragData( GtkSelectionData *sd ) { m_dragData = sd; }
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void GTKSetDragTime(unsigned time) { m_dragTime = time; }
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};
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//-------------------------------------------------------------------------
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// wxDropSource
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//-------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxDropSource: public wxDropSourceBase
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{
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public:
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// constructor. set data later with SetData()
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wxDropSource( wxWindow *win = NULL,
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const wxIcon © = wxNullIcon,
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const wxIcon &move = wxNullIcon,
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const wxIcon &none = wxNullIcon);
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// constructor for setting one data object
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wxDropSource( wxDataObject& data,
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wxWindow *win,
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const wxIcon © = wxNullIcon,
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const wxIcon &move = wxNullIcon,
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const wxIcon &none = wxNullIcon);
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virtual ~wxDropSource();
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// set the icon corresponding to given drag result
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void SetIcon(wxDragResult res, const wxIcon& icon)
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{
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if ( res == wxDragCopy )
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m_iconCopy = icon;
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else if ( res == wxDragMove )
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m_iconMove = icon;
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else
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m_iconNone = icon;
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}
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// start drag action
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virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly);
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void PrepareIcon( int action, GdkDragContext *context );
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GtkWidget *m_widget;
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GtkWidget *m_iconWindow;
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GdkDragContext *m_dragContext;
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wxWindow *m_window;
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wxDragResult m_retValue;
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wxIcon m_iconCopy,
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m_iconMove,
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m_iconNone;
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bool m_waiting;
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private:
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// common part of both ctors
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void SetIcons(const wxIcon& copy,
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const wxIcon& move,
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const wxIcon& none);
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// GTK implementation
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void GTKConnectDragSignals();
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void GTKDisconnectDragSignals();
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};
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#endif // _WX_GTK_DND_H_
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