1. added support for bitmaps with alpha channel

[wxWidgets.git] / include / wx / clipbrd.h

diff --git a/include/wx/clipbrd.h b/include/wx/clipbrd.h
index 36a95b06382bc19557b5830fe5f7ca70cb847001..f4c29ba4b71b9429b72be1c9bb533022da7c0df3 100644 (file)
--- a/include/wx/clipbrd.h
+++ b/include/wx/clipbrd.h
@@ -1,21 +1,147 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/clipbrd.h
+// Purpose:     wxClipboad class and clipboard functions
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     19.10.99
+// RCS-ID:      $Id$
+// Copyright:   (c) wxWidgets Team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
 #ifndef _WX_CLIPBRD_H_BASE_
 #define _WX_CLIPBRD_H_BASE_
 
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+    #pragma interface "clipboardbase.h"
+#endif
+
+#include "wx/defs.h"
+
+#if wxUSE_CLIPBOARD
+
+
+#include "wx/object.h"
+#include "wx/wxchar.h"
+
+class WXDLLEXPORT wxDataFormat;
+class WXDLLEXPORT wxDataObject;
+class WXDLLEXPORT wxClipboard;
+
+// ----------------------------------------------------------------------------
+// wxClipboard represents the system clipboard. Normally, you should use
+// wxTheClipboard which is a global pointer to the (unique) clipboard.
+//
+// Clipboard can be used to copy data to/paste data from. It works together
+// with wxDataObject.
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxClipboardBase : public wxObject
+{
+public:
+    wxClipboardBase() {}
+
+    // open the clipboard before Add/SetData() and GetData()
+    virtual bool Open() = 0;
+
+    // close the clipboard after Add/SetData() and GetData()
+    virtual void Close() = 0;
+
+    // query whether the clipboard is opened
+    virtual bool IsOpened() const = 0;
+
+    // add to the clipboard data
+    //
+    // NB: the clipboard owns the pointer and will delete it, so data must be
+    //     allocated on the heap
+    virtual bool AddData( wxDataObject *data ) = 0;
+
+    // set the clipboard data, this is the same as Clear() followed by
+    // AddData()
+    virtual bool SetData( wxDataObject *data ) = 0;
+
+    // ask if data in correct format is available
+    virtual bool IsSupported( const wxDataFormat& format ) = 0;
+
+    // fill data with data on the clipboard (if available)
+    virtual bool GetData( wxDataObject& data ) = 0;
+    
+    // clears wxTheClipboard and the system's clipboard if possible
+    virtual void Clear() = 0;
+
+    // flushes the clipboard: this means that the data which is currently on
+    // clipboard will stay available even after the application exits (possibly
+    // eating memory), otherwise the clipboard will be emptied on exit
+    virtual bool Flush() { return FALSE; }
+
+    // X11 has two clipboards which get selected by this call. Empty on MSW.
+    virtual void UsePrimarySelection( bool WXUNUSED(primary) = FALSE ) { }
+
+    // Returns global instance (wxTheClipboard) of the object:
+    static wxClipboard *Get();
+};
+
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+// The global clipboard object - backward compatible access macro:
+#define wxTheClipboard   (wxClipboard::Get())
+
+// ----------------------------------------------------------------------------
+// include platform-specific class declaration
+// ----------------------------------------------------------------------------
+
 #if defined(__WXMSW__)
-#include "wx/msw/clipbrd.h"
+    #include "wx/msw/clipbrd.h"
 #elif defined(__WXMOTIF__)
-#include "wx/motif/clipbrd.h"
+    #include "wx/motif/clipbrd.h"
 #elif defined(__WXGTK__)
-#include "wx/gtk/clipbrd.h"
-#elif defined(__WXQT__)
-#include "wx/gtk/clipbrd.h"
+    #include "wx/gtk/clipbrd.h"
+#elif defined(__WXX11__)
+    #include "wx/x11/clipbrd.h"
+#elif defined(__WXMGL__)
+    #include "wx/mgl/clipbrd.h"
 #elif defined(__WXMAC__)
-#include "wx/mac/clipbrd.h"
+    #include "wx/mac/clipbrd.h"
+#elif defined(__WXCOCOA__)
+    #include "wx/cocoa/clipbrd.h"
 #elif defined(__WXPM__)
-#include "wx/os2/clipbrd.h"
-#elif defined(__WXSTUBS__)
-#include "wx/stubs/clipbrd.h"
+    #include "wx/os2/clipbrd.h"
 #endif
 
-#endif
-    // _WX_CLIPBRD_H_BASE_
+// ----------------------------------------------------------------------------
+// helpful class for opening the clipboard and automatically closing it
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxClipboardLocker
+{
+public:
+    wxClipboardLocker(wxClipboard *clipboard = (wxClipboard *)NULL)
+    {
+        m_clipboard = clipboard ? clipboard : wxTheClipboard;
+        if ( m_clipboard )
+        {
+            m_clipboard->Open();
+        }
+    }
+
+    bool operator!() const { return !m_clipboard->IsOpened(); }
+
+    ~wxClipboardLocker()
+    {
+        if ( m_clipboard )
+        {
+            m_clipboard->Close();
+        }
+    }
+
+private:
+    wxClipboard *m_clipboard;
+
+    DECLARE_NO_COPY_CLASS(wxClipboardLocker)
+};
+
+#endif // wxUSE_CLIPBOARD
+
+#endif // _WX_CLIPBRD_H_BASE_