1 ! Copyright (C) 2008, 2009 Joe Groff, Slava Pestov.
2 ! Copyright (C) 2017 Alexander Ilin.
3 ! See http://factorcode.org/license.txt for BSD license.
4 USING: accessors alien.accessors alien.data alien.strings
5 classes.struct io.encodings.utf16n kernel make math namespaces
6 prettyprint sequences specialized-arrays
7 ui.gadgets.worlds ui.tools.listener windows.com
8 windows.com.wrapper windows.kernel32 windows.ole32
9 windows.shell32 windows.types ;
10 SPECIALIZED-ARRAY: WCHAR
11 IN: windows.dragdrop-listener
13 : filecount-from-hdrop ( hdrop -- n )
14 0xFFFFFFFF f 0 DragQueryFile ;
16 : filenames-from-hdrop ( hdrop -- filenames )
17 dup filecount-from-hdrop <iota>
19 2dup f 0 DragQueryFile 1 + ! get size of filename buffer
21 [ swap DragQueryFile drop ] keep
25 : handle-data-object ( handler: ( hdrop -- x ) data-object -- filenames )
29 DVASPECT_CONTENT >>dwAspect
33 [ IDataObject::GetData ] keep swap succeeded? [
35 [ rot execute( hdrop -- x ) ] with-global-lock
39 : filenames-from-data-object ( data-object -- filenames )
40 \ filenames-from-hdrop swap handle-data-object ;
42 : filecount-from-data-object ( data-object -- n )
43 \ filecount-from-hdrop swap handle-data-object ;
45 TUPLE: listener-dragdrop hWnd last-drop-effect ;
47 : <listener-dragdrop> ( hWnd -- object )
48 DROPEFFECT_NONE listener-dragdrop boa ;
50 SYMBOL: +listener-dragdrop-wrapper+
53 [ ! HRESULT DragEnter ( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
55 2drop filecount-from-data-object
56 1 = DROPEFFECT_COPY DROPEFFECT_NONE ?
58 ] dip 0 set-alien-unsigned-4
59 >>last-drop-effect drop
61 ] [ ! HRESULT DragOver ( DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
62 [ 2drop last-drop-effect>> ] dip 0 set-alien-unsigned-4
64 ] [ ! HRESULT DragLeave ( )
66 ] [ ! HRESULT Drop ( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
69 filenames-from-data-object
71 first unparse [ "USE: parser " % % " run-file" % ] "" make
74 ] [ drop DROPEFFECT_NONE ] if
75 ] dip 0 set-alien-unsigned-4
79 } <com-wrapper> +listener-dragdrop-wrapper+ set-global
81 : dragdrop-listener-window ( -- )
82 world get handle>> hWnd>> dup <listener-dragdrop>
83 +listener-dragdrop-wrapper+ get-global com-wrap
84 [ RegisterDragDrop check-ole32-error ] with-com-interface ;