1 ! Copyright (C) 2008, 2009 Joe Groff, Slava Pestov.
2 ! Copyright (C) 2017-2018 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.backend.windows ui.gadgets.worlds ui.gestures
8 ui.tools.listener windows.com windows.com.wrapper
9 windows.dropfiles windows.kernel32 windows.ole32 windows.shell32
11 SPECIALIZED-ARRAY: ushort
12 SPECIALIZED-ARRAY: WCHAR
13 IN: windows.dragdrop-listener
15 CONSTANT: E_OUTOFMEMORY -2147024882 ! 0x8007000e
17 : handle-data-object ( handler: ( hdrop -- x ) data-object -- filenames )
21 DVASPECT_CONTENT >>dwAspect
25 [ IDataObject::GetData ] keep swap succeeded? [
27 [ rot execute( hdrop -- x ) ] with-global-lock
31 : filenames-from-data-object ( data-object -- filenames )
32 \ filenames-from-hdrop swap handle-data-object ;
34 : filecount-from-data-object ( data-object -- n )
35 \ filecount-from-hdrop swap handle-data-object ;
37 TUPLE: listener-dragdrop world last-drop-effect ;
39 : <listener-dragdrop> ( world -- object )
40 DROPEFFECT_NONE listener-dragdrop boa ;
43 SYMBOL: +listener-dragdrop-wrapper+
49 [ ! HRESULT DragEnter ( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
50 DROPEFFECT_COPY swap 0 set-alien-unsigned-4 3drop
51 DROPEFFECT_COPY >>last-drop-effect drop
53 ] [ ! HRESULT DragOver ( DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
56 [ world>> children>> first hand-gadget set-global ]
57 [ last-drop-effect>> ] bi
58 ] dip 0 set-alien-unsigned-4
60 ] [ ! HRESULT DragLeave ( )
62 ] [ ! HRESULT Drop ( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
65 filenames-from-data-object dropped-files set-global
66 key-modifiers <file-drop> hand-gadget get-global propagate-gesture
68 ] dip 0 set-alien-unsigned-4
72 } <com-wrapper> +listener-dragdrop-wrapper+ set-global
75 : dragdrop-listener-window ( -- )
76 world get dup <listener-dragdrop>
77 +listener-dragdrop-wrapper+ get-global com-wrap [
78 [ handle>> hWnd>> ] dip
79 2dup RegisterDragDrop dup E_OUTOFMEMORY =
80 [ drop ole-initialize RegisterDragDrop ] [ 2nip ] if
82 ] with-com-interface ;