forked from AuroraMiddleware/gtk
2584 lines
76 KiB
C
2584 lines
76 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1999 Peter Mattis, Spencer Kimball and Josh MacDonald
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* Copyright (C) 2001 Archaeopteryx Software Inc.
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* Copyright (C) 1998-2002 Tor Lillqvist
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include <string.h>
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#include <io.h>
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#include <fcntl.h>
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#include <math.h>
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/*
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* Support for OLE-2 drag and drop added at Archaeopteryx Software, 2001
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* For more information, do not contact Stephan R.A. Deibel (sdeibel@archaeopteryx.com),
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* because the code went through multiple modifications since then.
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*
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* Notes on the implementation:
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*
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* Source drag context, IDropSource and IDataObject for it are created
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* (almost) simultaneously, whereas target drag context and IDropTarget
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* are separated in time - IDropTarget is created when a window is made
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* to accept drops, while target drag context is created when a dragging
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* cursor enters the window and is destroyed when that cursor leaves
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* the window.
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*
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* There's a mismatch between data types supported by W32 (W32 formats)
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* and by GTK+ (GDK contentformats).
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* To account for it the data is transmuted back and forth. There are two
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* main points of transmutation:
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* * GdkWin32HDATAOutputStream: transmutes GTK+ data to W32 data
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* * GdkWin32Drop: transmutes W32 data to GTK+ data
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*
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* There are also two points where data formats are considered:
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* * When source drag context is created, it gets a list of GDK contentformats
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* that it supports, these are matched to the W32 formats they
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* correspond to (possibly with transmutation). New W32 formats for
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* GTK+-specific contentformats are also created here (see below).
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* * When target drop context is created, it queries the IDataObject
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* for the list of W32 formats it supports and matches these to
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* corresponding GDK contentformats that it will be able to provide
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* (possibly with transmutation) later. Missing GDK contentformats for
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* W32-specific formats are also created here (see below).
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*
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* W32 formats are integers (CLIPFORMAT), while GTK+ contentformats
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* are mime/type strings, and cannot be used interchangeably.
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*
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* To accommodate advanced GTK+ applications the code allows them to
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* register drop targets that accept W32 data formats, and to register
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* drag sources that provide W32 data formats. To do that they must
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* register with the mime/type "application/x.windows.ZZZ", where
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* ZZZ is the string name of the format in question
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* (for example, "Shell IDList Array") or, for unnamed pre-defined
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* formats, register with the stringified constant name of the format
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* in question (for example, "CF_UNICODETEXT").
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* If such contentformat is accepted/provided, GDK will not try to
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* transmute it to/from something else. Otherwise GDK will do the following
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* transmutation:
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* * If GTK+ application provides image/png, image/gif or image/jpeg,
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* GDK will claim to also provide "PNG", "GIF" or "JFIF" respectively,
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* and will pass these along verbatim.
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* * If GTK+ application provides any GdkPixbuf-compatible contentformat,
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* GDK will also offer "PNG" and CF_DIB W32 formats.
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* * If GTK+ application provides text/plain;charset=utf8, GDK will also offer
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* CF_UNICODETEXT (UTF-16-encoded) and CF_TEXT (encoded with thread-
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* and locale-dependent codepage), and will do the conversion when such
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* data is requested.
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* * If GTK+ application accepts image/png, image/gif or image/jpeg,
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* GDK will claim to also accept "PNG", "GIF" or "JFIF" respectively,
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* and will pass these along verbatim.
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* * If GTK+ application accepts image/bmp, GDK will
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* claim to accept CF_DIB W32 format, and will convert
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* it, changing the header, when such data is provided.
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* * If GTK+ application accepts text/plain;charset=utf8, GDK will
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* claim to accept CF_UNICODETEXT and CF_TEXT, and will do
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* the conversion when such data is provided.
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* * If GTK+ application accepts text/uri-list, GDK will
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* claim to accept "Shell IDList Array", and will do the
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* conversion when such data is provided.
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*
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* Currently the conversion from text/uri-list to "Shell IDList Array" is not
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* implemented, so it's not possible to drag & drop files from GTK+
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* applications to non-GTK+ applications the same way one can drag files
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* from Windows Explorer.
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*
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* To increase inter-GTK compatibility, GDK will register GTK+-specific
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* formats by their mime/types, as-is (i.e "text/plain;charset=utf-8", for example).
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* That way two GTK+ applications can exchange data in their native formats
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* (both well-known ones, such as text/plain;charset=utf8, and special,
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* known only to specific applications). This will work just
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* fine as long as both applications agree on what kind of data is stored
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* under such format exactly.
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*
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* Note that clipboard format space is limited, there can only be 16384
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* of them for a particular user session. Therefore it is highly inadvisable
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* to create and register such formats out of the whole cloth, dynamically.
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* If more flexibility is needed, register one format that has some
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* internal indicators of the kind of data it contains, then write the application
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* in such a way that it requests the data and inspects its header before deciding
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* whether to accept it or not. For details see GTK+ drag & drop documentation
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* on the "drag-motion" and "drag-data-received" signals.
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*
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* How managed DnD works:
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* GTK widget detects a drag gesture and calls
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* S: gdk_drag_begin_from_point() -> backend:drag_begin()
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* which creates the source drag context and the drag window,
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* and grabs the pointing device. GDK layer adds the context
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* to a list of currently-active contexts.
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*
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* From that point forward the context gets any events emitted
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* by GDK, and can prevent these events from going anywhere else.
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* They are all handled in
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* S: gdk_drag_handle_source_event() -> backend:handle_event()
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* (except for wayland backend - it doesn't have that function).
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*
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* That function catches the following events:
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* GDK_MOTION_NOTIFY
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* GDK_BUTTON_RELEASE
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* GDK_KEY_PRESS
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* GDK_KEY_RELEASE
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* GDK_GRAB_BROKEN
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*
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* GDK_MOTION_NOTIFY is emitted by the backend in response to
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* mouse movement.
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* Drag context handles it by calling a bunch of functions to
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* determine the state of the drag actions from the keys being
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* pressed, finding the drag window (another backend function
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* routed through GDK layer) and finally calls
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* S: gdk_drag_motion -> backend:drag_motion()
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* to notify the backend (i.e. itself) that the drag cursor
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* moved.
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* The response to that is to move the drag window and
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* do various bookkeeping.
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* W32: OLE2 protocol does nothing (other than moving the
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* drag window) in response to this, as all the functions
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* that GDK could perform here are already handled by the
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* OS driving the DnD process via DoDragDrop() call.
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* The LOCAL protocol, on the other hande, does a lot,
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* similar to what X11 backend does with XDND - it sends
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* GDK_DRAG_LEAVE and GDK_DRAG_ENTER, emits GDK_DRAG_MOTION.
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*
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* GDK_BUTTON_RELEASE checks the
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* released button - if it's the button that was used to
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* initiate the drag, the "drop-performed" signal is emitted,
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* otherwise the drag is cancelled.
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*
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* GDK_KEY_PRESS and GDK_KEY_RELEASE handler does exactly the same thing as
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* GDK_MOTION_NOTIFY handler, but only after it checks the pressed
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* keys to emit "drop-performed" signal (on Space, Enter etc),
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* cancel the drag (on Escape) or move the drag cursor (arrow keys).
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*
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* GDK_GRAB_BROKEN handler cancels the drag for most broken grabs
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* (except for some special cases where the backend itself does
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* temporary grabs as part of DnD, such as changing the cursor).
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*
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* GDK_DRAG_ENTER, GDK_DRAG_LEAVE, GDK_DRAG_MOTION and GDK_DROP_START
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* events are emitted when
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* the OS notifies the process about these things happening.
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* For X11 backend that is done in Xdnd event filters,
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* for W32 backend this is done in IDropSource/IDropTarget
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* object methods for the OLE2 protocol, whereas for the
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* LOCAL protocol these events are emitted only by GDK itself
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* (with the exception of WM_DROPFILES message, which causes
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* GDK to create a drop context and then immediately finish
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* the drag, providing the list of files it got from the message).
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*
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*/
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/* The mingw.org compiler does not export GUIDS in it's import library. To work
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* around that, define INITGUID to have the GUIDS declared. */
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#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
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#define INITGUID
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#endif
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/* For C-style COM wrapper macros */
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#define COBJMACROS
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#include "gdkdrag.h"
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#include "gdkinternals.h"
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#include "gdkprivate-win32.h"
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#include "gdkwin32.h"
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#include "gdkwin32dnd.h"
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#include "gdkdisplayprivate.h"
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#include "gdk/gdkdragprivate.h"
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#include "gdkwin32dnd-private.h"
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#include "gdkdisplay-win32.h"
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#include "gdkdeviceprivate.h"
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#include "gdkhdataoutputstream-win32.h"
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#include <ole2.h>
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#include <shlobj.h>
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#include <shlguid.h>
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#include <objidl.h>
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#include "gdkintl.h"
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#include <gdk/gdk.h>
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#include <glib/gstdio.h>
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/* Just to avoid calling RegisterWindowMessage() every time */
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static UINT thread_wakeup_message;
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typedef struct
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{
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IDropSource ids;
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IDropSourceNotify idsn;
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gint ref_count;
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GdkDrag *drag;
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/* These are thread-local
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* copies of the similar fields from GdkWin32Drag
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*/
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GdkWin32DragUtilityData util_data;
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/* Cached here, so that we don't have to look in
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* the context every time.
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*/
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HWND source_window_handle;
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guint scale;
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/* We get this from the OS via IDropSourceNotify and pass it to the
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* main thread.
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* Will be INVALID_HANDLE_VALUE (not NULL!) when unset.
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*/
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HWND dest_window_handle;
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} source_drag_context;
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typedef struct {
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IDataObject ido;
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int ref_count;
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GdkDrag *drag;
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GArray *formats;
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} data_object;
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typedef struct {
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IEnumFORMATETC ief;
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int ref_count;
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int ix;
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GArray *formats;
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} enum_formats;
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typedef enum _GdkWin32DnDThreadQueueItemType GdkWin32DnDThreadQueueItemType;
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enum _GdkWin32DnDThreadQueueItemType
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{
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GDK_WIN32_DND_THREAD_QUEUE_ITEM_GIVE_FEEDBACK = 1,
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GDK_WIN32_DND_THREAD_QUEUE_ITEM_DRAG_INFO = 2,
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GDK_WIN32_DND_THREAD_QUEUE_ITEM_DO_DRAG_DROP = 3,
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GDK_WIN32_DND_THREAD_QUEUE_ITEM_GET_DATA = 4,
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GDK_WIN32_DND_THREAD_QUEUE_ITEM_UPDATE_DRAG_STATE = 5,
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};
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typedef struct _GdkWin32DnDThreadQueueItem GdkWin32DnDThreadQueueItem;
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struct _GdkWin32DnDThreadQueueItem
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{
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GdkWin32DnDThreadQueueItemType item_type;
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/* This is used by the DnD thread to communicate the identity
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* of the drag context to the main thread. This is thread-safe
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* because DnD thread holds a reference to the context.
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*/
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gpointer opaque_context;
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};
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typedef struct _GdkWin32DnDThreadDoDragDrop GdkWin32DnDThreadDoDragDrop;
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/* This is used both to signal the DnD thread that it needs
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* to call DoDragDrop(), *and* to signal the main thread
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* that the DoDragDrop() call returned.
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*/
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struct _GdkWin32DnDThreadDoDragDrop
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{
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GdkWin32DnDThreadQueueItem base;
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source_drag_context *src_context;
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data_object *src_object;
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DWORD allowed_drop_effects;
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DWORD received_drop_effect;
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HRESULT received_result;
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};
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typedef struct _GdkWin32DnDThreadGetData GdkWin32DnDThreadGetData;
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/* This is used both to signal the main thread that the DnD thread
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* needs DnD data, and to give that data to the DnD thread.
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*/
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struct _GdkWin32DnDThreadGetData
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{
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GdkWin32DnDThreadQueueItem base;
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GdkWin32ContentFormatPair pair;
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GdkWin32HDataOutputStream *stream;
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STGMEDIUM produced_data_medium;
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};
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typedef struct _GdkWin32DnDThreadGiveFeedback GdkWin32DnDThreadGiveFeedback;
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struct _GdkWin32DnDThreadGiveFeedback
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{
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GdkWin32DnDThreadQueueItem base;
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DWORD received_drop_effect;
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};
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typedef struct _GdkWin32DnDThreadDragInfo GdkWin32DnDThreadDragInfo;
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struct _GdkWin32DnDThreadDragInfo
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{
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GdkWin32DnDThreadQueueItem base;
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BOOL received_escape_pressed;
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DWORD received_keyboard_mods;
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};
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typedef struct _GdkWin32DnDThreadUpdateDragState GdkWin32DnDThreadUpdateDragState;
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struct _GdkWin32DnDThreadUpdateDragState
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{
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GdkWin32DnDThreadQueueItem base;
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gpointer opaque_ddd;
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GdkWin32DragUtilityData produced_util_data;
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};
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typedef struct _GdkWin32DnDThread GdkWin32DnDThread;
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struct _GdkWin32DnDThread
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{
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/* We receive instructions from the main thread in this queue */
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GAsyncQueue *input_queue;
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/* We can't peek the queue or "unpop" queue items,
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* so the items that we can't act upon (yet) got
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* to be stored *somewhere*.
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*/
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GList *dequeued_items;
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source_drag_context *src_context;
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data_object *src_object;
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};
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/* The code is much more secure if we don't rely on the OS to keep
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* this around for us.
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*/
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static GdkWin32DnDThread *dnd_thread_data = NULL;
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static gboolean
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dnd_queue_is_empty ()
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{
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return g_atomic_int_get (&_win32_clipdrop->dnd_queue_counter) == 0;
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}
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static void
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decrement_dnd_queue_counter ()
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{
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g_atomic_int_dec_and_test (&_win32_clipdrop->dnd_queue_counter);
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}
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static void
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increment_dnd_queue_counter ()
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{
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g_atomic_int_inc (&_win32_clipdrop->dnd_queue_counter);
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}
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static void
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free_queue_item (GdkWin32DnDThreadQueueItem *item)
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{
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GdkWin32DnDThreadGetData *getdata;
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switch (item->item_type)
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{
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case GDK_WIN32_DND_THREAD_QUEUE_ITEM_DO_DRAG_DROP:
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/* Don't unref anything, it's all done in the main thread,
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* when it receives a DoDragDrop reply.
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*/
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break;
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case GDK_WIN32_DND_THREAD_QUEUE_ITEM_UPDATE_DRAG_STATE:
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case GDK_WIN32_DND_THREAD_QUEUE_ITEM_GIVE_FEEDBACK:
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case GDK_WIN32_DND_THREAD_QUEUE_ITEM_DRAG_INFO:
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/* These have no data to clean up */
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break;
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case GDK_WIN32_DND_THREAD_QUEUE_ITEM_GET_DATA:
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getdata = (GdkWin32DnDThreadGetData *) item;
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switch (getdata->produced_data_medium.tymed)
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{
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case TYMED_FILE:
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case TYMED_ISTREAM:
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case TYMED_ISTORAGE:
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case TYMED_GDI:
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case TYMED_MFPICT:
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case TYMED_ENHMF:
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g_critical ("Unsupported STGMEDIUM type");
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break;
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case TYMED_NULL:
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break;
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case TYMED_HGLOBAL:
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GlobalFree (getdata->produced_data_medium.hGlobal);
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break;
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}
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}
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g_free (item);
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}
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static gboolean
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process_dnd_queue (gboolean timed,
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guint64 end_time,
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GdkWin32DnDThreadGetData *getdata_check)
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{
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GdkWin32DnDThreadQueueItem *item;
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GdkWin32DnDThreadUpdateDragState *updatestate;
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GdkWin32DnDThreadDoDragDrop *ddd;
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while (TRUE)
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{
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if (timed)
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{
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guint64 current_time = g_get_monotonic_time ();
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if (current_time >= end_time)
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break;
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item = g_async_queue_timeout_pop (dnd_thread_data->input_queue, end_time - current_time);
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}
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else
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{
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item = g_async_queue_try_pop (dnd_thread_data->input_queue);
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}
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if (item == NULL)
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break;
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decrement_dnd_queue_counter ();
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switch (item->item_type)
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{
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case GDK_WIN32_DND_THREAD_QUEUE_ITEM_DO_DRAG_DROP:
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/* We don't support more than one DnD at a time */
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free_queue_item (item);
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break;
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case GDK_WIN32_DND_THREAD_QUEUE_ITEM_UPDATE_DRAG_STATE:
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updatestate = (GdkWin32DnDThreadUpdateDragState *) item;
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ddd = (GdkWin32DnDThreadDoDragDrop *) updatestate->opaque_ddd;
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ddd->src_context->util_data = updatestate->produced_util_data;
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free_queue_item (item);
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break;
|
|
case GDK_WIN32_DND_THREAD_QUEUE_ITEM_GET_DATA:
|
|
if (item == (GdkWin32DnDThreadQueueItem *) getdata_check)
|
|
return TRUE;
|
|
|
|
free_queue_item (item);
|
|
break;
|
|
case GDK_WIN32_DND_THREAD_QUEUE_ITEM_GIVE_FEEDBACK:
|
|
case GDK_WIN32_DND_THREAD_QUEUE_ITEM_DRAG_INFO:
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
_gdk_win32_local_drag_drop_response (GdkDrag *drag,
|
|
GdkDragAction action)
|
|
{
|
|
GDK_NOTE (DND, g_print ("_gdk_win32_local_drag_drop_response: 0x%p\n",
|
|
drag));
|
|
|
|
g_signal_emit_by_name (drag, "dnd-finished");
|
|
gdk_drag_drop_done (drag, action != 0);
|
|
}
|
|
|
|
static gboolean
|
|
do_drag_drop_response (gpointer user_data)
|
|
{
|
|
GdkWin32DnDThreadDoDragDrop *ddd = (GdkWin32DnDThreadDoDragDrop *) user_data;
|
|
HRESULT hr = ddd->received_result;
|
|
GdkDrag *drag = GDK_DRAG (ddd->base.opaque_context);
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
gpointer table_value = g_hash_table_lookup (clipdrop->active_source_drags, drag);
|
|
|
|
if (ddd == table_value)
|
|
{
|
|
GDK_NOTE (DND, g_print ("DoDragDrop returned %s with effect %lu\n",
|
|
(hr == DRAGDROP_S_DROP ? "DRAGDROP_S_DROP" :
|
|
(hr == DRAGDROP_S_CANCEL ? "DRAGDROP_S_CANCEL" :
|
|
(hr == E_UNEXPECTED ? "E_UNEXPECTED" :
|
|
g_strdup_printf ("%#.8lx", hr)))), ddd->received_drop_effect));
|
|
|
|
drag_win32->drop_failed = !(SUCCEEDED (hr) || hr == DRAGDROP_S_DROP);
|
|
|
|
/* We used to delete the selection here,
|
|
* now GTK does that automatically in response to
|
|
* the "dnd-finished" signal,
|
|
* if the operation was successful and was a move.
|
|
*/
|
|
GDK_NOTE (DND, g_print ("gdk_dnd_handle_drop_finished: 0x%p\n",
|
|
drag));
|
|
|
|
g_signal_emit_by_name (drag, "dnd-finished");
|
|
gdk_drag_drop_done (drag, !drag_win32->drop_failed);
|
|
}
|
|
else
|
|
{
|
|
if (!table_value)
|
|
g_critical ("Did not find drag 0x%p in the active drags table", drag);
|
|
else
|
|
g_critical ("Found drag 0x%p in the active drags table, but the record doesn't match (0x%p != 0x%p)", drag, ddd, table_value);
|
|
}
|
|
|
|
/* 3rd parties could keep a reference to this object,
|
|
* but we won't keep the drag alive that long.
|
|
* Neutralize it (attempts to get its data will fail)
|
|
* by nullifying the drag pointer (it doesn't hold
|
|
* a reference, so no unreffing).
|
|
*/
|
|
g_clear_object (&ddd->src_object->drag);
|
|
|
|
IDropSource_Release (&ddd->src_context->ids);
|
|
IDataObject_Release (&ddd->src_object->ido);
|
|
|
|
g_hash_table_remove (clipdrop->active_source_drags, drag);
|
|
free_queue_item (&ddd->base);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static void
|
|
received_drag_context_data (GObject *drag,
|
|
GAsyncResult *result,
|
|
gpointer user_data)
|
|
{
|
|
GError *error = NULL;
|
|
GdkWin32DnDThreadGetData *getdata = (GdkWin32DnDThreadGetData *) user_data;
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
|
|
if (!gdk_drag_write_finish (GDK_DRAG (drag), result, &error))
|
|
{
|
|
HANDLE handle;
|
|
gboolean is_hdata;
|
|
|
|
GDK_NOTE (DND, g_printerr ("%p: failed to write HData-backed stream: %s\n", drag, error->message));
|
|
g_error_free (error);
|
|
g_output_stream_close (G_OUTPUT_STREAM (getdata->stream), NULL, NULL);
|
|
handle = gdk_win32_hdata_output_stream_get_handle (getdata->stream, &is_hdata);
|
|
|
|
if (is_hdata)
|
|
API_CALL (GlobalFree, (handle));
|
|
else
|
|
API_CALL (CloseHandle, (handle));
|
|
}
|
|
else
|
|
{
|
|
g_output_stream_close (G_OUTPUT_STREAM (getdata->stream), NULL, NULL);
|
|
getdata->produced_data_medium.tymed = TYMED_HGLOBAL;
|
|
getdata->produced_data_medium.hGlobal = gdk_win32_hdata_output_stream_get_handle (getdata->stream, NULL);
|
|
}
|
|
|
|
g_clear_object (&getdata->stream);
|
|
increment_dnd_queue_counter ();
|
|
g_async_queue_push (clipdrop->dnd_queue, getdata);
|
|
API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id, thread_wakeup_message, 0, 0));
|
|
}
|
|
|
|
static gboolean
|
|
get_data_response (gpointer user_data)
|
|
{
|
|
GdkWin32DnDThreadGetData *getdata = (GdkWin32DnDThreadGetData *) user_data;
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
GdkDrag *drag = GDK_DRAG (getdata->base.opaque_context);
|
|
gpointer ddd = g_hash_table_lookup (clipdrop->active_source_drags, drag);
|
|
|
|
GDK_NOTE (DND, g_print ("idataobject_getdata will request target 0x%p (%s)",
|
|
getdata->pair.contentformat, getdata->pair.contentformat));
|
|
|
|
/* This just verifies that we got the right drag,
|
|
* we don't need the ddd struct itself.
|
|
*/
|
|
if (ddd)
|
|
{
|
|
GError *error = NULL;
|
|
GOutputStream *stream = gdk_win32_hdata_output_stream_new (&getdata->pair, &error);
|
|
|
|
if (stream)
|
|
{
|
|
getdata->stream = GDK_WIN32_HDATA_OUTPUT_STREAM (stream);
|
|
gdk_drag_write_async (drag,
|
|
getdata->pair.contentformat,
|
|
stream,
|
|
G_PRIORITY_DEFAULT,
|
|
NULL,
|
|
received_drag_context_data,
|
|
getdata);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
}
|
|
|
|
increment_dnd_queue_counter ();
|
|
g_async_queue_push (clipdrop->dnd_queue, getdata);
|
|
API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id, thread_wakeup_message, 0, 0));
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static void
|
|
do_drag_drop (GdkWin32DnDThreadDoDragDrop *ddd)
|
|
{
|
|
HRESULT hr;
|
|
|
|
dnd_thread_data->src_object = ddd->src_object;
|
|
dnd_thread_data->src_context = ddd->src_context;
|
|
|
|
hr = DoDragDrop (&dnd_thread_data->src_object->ido,
|
|
&dnd_thread_data->src_context->ids,
|
|
ddd->allowed_drop_effects,
|
|
&ddd->received_drop_effect);
|
|
|
|
ddd->received_result = hr;
|
|
|
|
g_idle_add_full (G_PRIORITY_DEFAULT, do_drag_drop_response, ddd, NULL);
|
|
}
|
|
|
|
gpointer
|
|
_gdk_win32_dnd_thread_main (gpointer data)
|
|
{
|
|
GAsyncQueue *queue = (GAsyncQueue *) data;
|
|
GdkWin32DnDThreadQueueItem *item;
|
|
MSG msg;
|
|
HRESULT hr;
|
|
|
|
g_assert (dnd_thread_data == NULL);
|
|
|
|
dnd_thread_data = g_new0 (GdkWin32DnDThread, 1);
|
|
dnd_thread_data->input_queue = queue;
|
|
|
|
CoInitializeEx (NULL, COINIT_APARTMENTTHREADED);
|
|
|
|
hr = OleInitialize (NULL);
|
|
|
|
if (!SUCCEEDED (hr))
|
|
g_error ("OleInitialize failed");
|
|
|
|
/* Create a message queue */
|
|
PeekMessage (&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE);
|
|
|
|
thread_wakeup_message = RegisterWindowMessage ("GDK_WORKER_THREAD_WEAKEUP");
|
|
|
|
/* Signal the main thread that we're ready.
|
|
* This is the only time the queue works in reverse.
|
|
*/
|
|
g_async_queue_push (queue, GUINT_TO_POINTER (GetCurrentThreadId ()));
|
|
|
|
while (GetMessage (&msg, NULL, 0, 0))
|
|
{
|
|
if (!dnd_queue_is_empty ())
|
|
{
|
|
while ((item = g_async_queue_try_pop (queue)) != NULL)
|
|
{
|
|
decrement_dnd_queue_counter ();
|
|
|
|
if (item->item_type != GDK_WIN32_DND_THREAD_QUEUE_ITEM_DO_DRAG_DROP)
|
|
{
|
|
free_queue_item (item);
|
|
continue;
|
|
}
|
|
|
|
do_drag_drop ((GdkWin32DnDThreadDoDragDrop *) item);
|
|
API_CALL (PostThreadMessage, (GetCurrentThreadId (), thread_wakeup_message, 0, 0));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Just to be safe, although this mostly does nothing */
|
|
TranslateMessage (&msg);
|
|
DispatchMessage (&msg);
|
|
}
|
|
|
|
g_async_queue_unref (queue);
|
|
g_clear_pointer (&dnd_thread_data, g_free);
|
|
|
|
OleUninitialize ();
|
|
CoUninitialize ();
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* For the LOCAL protocol */
|
|
typedef enum {
|
|
GDK_DRAG_STATUS_DRAG,
|
|
GDK_DRAG_STATUS_MOTION_WAIT,
|
|
GDK_DRAG_STATUS_ACTION_WAIT,
|
|
GDK_DRAG_STATUS_DROP
|
|
} GdkDragStatus;
|
|
|
|
static gboolean use_ole2_dnd = TRUE;
|
|
|
|
static gboolean drag_context_grab (GdkDrag *drag);
|
|
|
|
G_DEFINE_TYPE (GdkWin32Drag, gdk_win32_drag, GDK_TYPE_DRAG)
|
|
|
|
static void
|
|
move_drag_surface (GdkDrag *drag,
|
|
guint x_root,
|
|
guint y_root)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread == g_thread_self ());
|
|
|
|
gdk_win32_surface_move (drag_win32->drag_surface,
|
|
x_root - drag_win32->hot_x,
|
|
y_root - drag_win32->hot_y);
|
|
gdk_win32_surface_raise (drag_win32->drag_surface);
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_init (GdkWin32Drag *drag)
|
|
{
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread == g_thread_self ());
|
|
|
|
drag->handle_events = TRUE;
|
|
drag->dest_window = INVALID_HANDLE_VALUE;
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_win32_drag_init %p\n", drag));
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_finalize (GObject *object)
|
|
{
|
|
GdkDrag *drag;
|
|
GdkWin32Drag *drag_win32;
|
|
GdkSurface *drag_surface;
|
|
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread == g_thread_self ());
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_win32_drag_finalize %p\n", object));
|
|
|
|
g_return_if_fail (GDK_IS_WIN32_DRAG (object));
|
|
|
|
drag = GDK_DRAG (object);
|
|
drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
gdk_drag_set_cursor (drag, NULL);
|
|
|
|
g_set_object (&drag_win32->grab_surface, NULL);
|
|
drag_surface = drag_win32->drag_surface;
|
|
|
|
G_OBJECT_CLASS (gdk_win32_drag_parent_class)->finalize (object);
|
|
|
|
if (drag_surface)
|
|
gdk_surface_destroy (drag_surface);
|
|
}
|
|
|
|
/* Drag Contexts */
|
|
|
|
static GdkDrag *
|
|
gdk_drag_new (GdkDisplay *display,
|
|
GdkSurface *surface,
|
|
GdkContentProvider *content,
|
|
GdkDragAction actions,
|
|
GdkDevice *device,
|
|
GdkDragProtocol protocol)
|
|
{
|
|
GdkWin32Drag *drag_win32;
|
|
GdkWin32Display *win32_display = GDK_WIN32_DISPLAY (display);
|
|
GdkDrag *drag;
|
|
|
|
drag_win32 = g_object_new (GDK_TYPE_WIN32_DRAG,
|
|
"device", device,
|
|
"content", content,
|
|
"surface", surface,
|
|
"actions", actions,
|
|
NULL);
|
|
|
|
drag = GDK_DRAG (drag_win32);
|
|
|
|
if (win32_display->has_fixed_scale)
|
|
drag_win32->scale = win32_display->surface_scale;
|
|
else
|
|
drag_win32->scale = _gdk_win32_display_get_monitor_scale_factor (win32_display, NULL, NULL, NULL);
|
|
|
|
drag_win32->protocol = protocol;
|
|
|
|
return drag;
|
|
}
|
|
|
|
#define PRINT_GUID(guid) \
|
|
g_print ("%.08lx-%.04x-%.04x-%.02x%.02x-%.02x%.02x%.02x%.02x%.02x%.02x", \
|
|
((gulong *) guid)[0], \
|
|
((gushort *) guid)[2], \
|
|
((gushort *) guid)[3], \
|
|
((guchar *) guid)[8], \
|
|
((guchar *) guid)[9], \
|
|
((guchar *) guid)[10], \
|
|
((guchar *) guid)[11], \
|
|
((guchar *) guid)[12], \
|
|
((guchar *) guid)[13], \
|
|
((guchar *) guid)[14], \
|
|
((guchar *) guid)[15]);
|
|
|
|
static enum_formats *enum_formats_new (GArray *formats);
|
|
|
|
/* Finds a GdkDrag object that corresponds to a DnD operation
|
|
* which is currently targetting the dest_window
|
|
* Does not give a reference.
|
|
*/
|
|
GdkDrag *
|
|
_gdk_win32_find_drag_for_dest_window (HWND dest_window)
|
|
{
|
|
GHashTableIter iter;
|
|
GdkWin32Drag *drag_win32;
|
|
GdkWin32DnDThreadDoDragDrop *ddd;
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
|
|
g_hash_table_iter_init (&iter, clipdrop->active_source_drags);
|
|
|
|
while (g_hash_table_iter_next (&iter, (gpointer *) &drag_win32, (gpointer *) &ddd))
|
|
if (ddd->src_context->dest_window_handle == dest_window)
|
|
return GDK_DRAG (drag_win32);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static GdkDragAction
|
|
action_for_drop_effect (DWORD effect)
|
|
{
|
|
GdkDragAction action = 0;
|
|
|
|
if (effect & DROPEFFECT_MOVE)
|
|
action |= GDK_ACTION_MOVE;
|
|
if (effect & DROPEFFECT_LINK)
|
|
action |= GDK_ACTION_LINK;
|
|
if (effect & DROPEFFECT_COPY)
|
|
action |= GDK_ACTION_COPY;
|
|
|
|
return action;
|
|
}
|
|
|
|
static ULONG STDMETHODCALLTYPE
|
|
idropsource_addref (LPDROPSOURCE This)
|
|
{
|
|
source_drag_context *ctx = (source_drag_context *) This;
|
|
|
|
int ref_count = ++ctx->ref_count;
|
|
|
|
GDK_NOTE (DND, g_print ("idropsource_addref %p %d\n", This, ref_count));
|
|
|
|
return ref_count;
|
|
}
|
|
|
|
typedef struct _GdkWin32DnDEnterLeaveNotify GdkWin32DnDEnterLeaveNotify;
|
|
|
|
struct _GdkWin32DnDEnterLeaveNotify
|
|
{
|
|
gpointer opaque_context;
|
|
HWND target_window_handle;
|
|
};
|
|
|
|
static gboolean
|
|
notify_dnd_enter (gpointer user_data)
|
|
{
|
|
GdkWin32DnDEnterLeaveNotify *notify = (GdkWin32DnDEnterLeaveNotify *) user_data;
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (notify->opaque_context);
|
|
|
|
drag_win32->dest_window = notify->target_window_handle;
|
|
|
|
g_free (notify);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static gboolean
|
|
notify_dnd_leave (gpointer user_data)
|
|
{
|
|
GdkWin32DnDEnterLeaveNotify *notify = (GdkWin32DnDEnterLeaveNotify *) user_data;
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (notify->opaque_context);
|
|
|
|
if (notify->target_window_handle != drag_win32->dest_window)
|
|
g_warning ("DnD leave says that the window handle is 0x%p, but drag has 0x%p", notify->target_window_handle, drag_win32->dest_window);
|
|
|
|
drag_win32->dest_window = INVALID_HANDLE_VALUE;
|
|
|
|
g_free (notify);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idropsourcenotify_dragentertarget (IDropSourceNotify *This,
|
|
HWND hwndTarget)
|
|
{
|
|
source_drag_context *ctx = (source_drag_context *) (((char *) This) - G_STRUCT_OFFSET (source_drag_context, idsn));
|
|
GdkWin32DnDEnterLeaveNotify *notify;
|
|
|
|
if (!dnd_queue_is_empty ())
|
|
process_dnd_queue (FALSE, 0, NULL);
|
|
|
|
GDK_NOTE (DND, g_print ("idropsourcenotify_dragentertarget %p (SDC %p) 0x%p\n", This, ctx, hwndTarget));
|
|
|
|
ctx->dest_window_handle = hwndTarget;
|
|
|
|
notify = g_new0 (GdkWin32DnDEnterLeaveNotify, 1);
|
|
notify->target_window_handle = hwndTarget;
|
|
notify->opaque_context = ctx->drag;
|
|
g_idle_add_full (G_PRIORITY_DEFAULT, notify_dnd_enter, notify, NULL);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idropsourcenotify_dragleavetarget (IDropSourceNotify *This)
|
|
{
|
|
source_drag_context *ctx = (source_drag_context *) (((char *) This) - G_STRUCT_OFFSET (source_drag_context, idsn));
|
|
GdkWin32DnDEnterLeaveNotify *notify;
|
|
|
|
if (!dnd_queue_is_empty ())
|
|
process_dnd_queue (FALSE, 0, NULL);
|
|
|
|
GDK_NOTE (DND, g_print ("idropsourcenotify_dragleavetarget %p (SDC %p) 0x%p\n", This, ctx, ctx->dest_window_handle));
|
|
|
|
notify = g_new0 (GdkWin32DnDEnterLeaveNotify, 1);
|
|
notify->target_window_handle = ctx->dest_window_handle;
|
|
ctx->dest_window_handle = INVALID_HANDLE_VALUE;
|
|
notify->opaque_context = ctx->drag;
|
|
g_idle_add_full (G_PRIORITY_DEFAULT, notify_dnd_leave, notify, NULL);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idropsource_queryinterface (LPDROPSOURCE This,
|
|
REFIID riid,
|
|
LPVOID *ppvObject)
|
|
{
|
|
GDK_NOTE (DND, {
|
|
g_print ("idropsource_queryinterface %p ", This);
|
|
PRINT_GUID (riid);
|
|
});
|
|
|
|
*ppvObject = NULL;
|
|
|
|
if (IsEqualGUID (riid, &IID_IUnknown))
|
|
{
|
|
GDK_NOTE (DND, g_print ("...IUnknown S_OK\n"));
|
|
idropsource_addref (This);
|
|
*ppvObject = This;
|
|
return S_OK;
|
|
}
|
|
else if (IsEqualGUID (riid, &IID_IDropSource))
|
|
{
|
|
GDK_NOTE (DND, g_print ("...IDropSource S_OK\n"));
|
|
idropsource_addref (This);
|
|
*ppvObject = This;
|
|
return S_OK;
|
|
}
|
|
else if (IsEqualGUID (riid, &IID_IDropSourceNotify))
|
|
{
|
|
GDK_NOTE (DND, g_print ("...IDropSourceNotify S_OK\n"));
|
|
idropsource_addref (This);
|
|
*ppvObject = &((source_drag_context *) This)->idsn;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
GDK_NOTE (DND, g_print ("...E_NOINTERFACE\n"));
|
|
return E_NOINTERFACE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
unref_context_in_main_thread (gpointer opaque_context)
|
|
{
|
|
GdkDrag *drag = GDK_DRAG (opaque_context);
|
|
|
|
g_clear_object (&drag);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static ULONG STDMETHODCALLTYPE
|
|
idropsource_release (LPDROPSOURCE This)
|
|
{
|
|
source_drag_context *ctx = (source_drag_context *) This;
|
|
|
|
int ref_count = --ctx->ref_count;
|
|
|
|
GDK_NOTE (DND, g_print ("idropsource_release %p %d\n", This, ref_count));
|
|
|
|
if (ref_count == 0)
|
|
{
|
|
g_idle_add (unref_context_in_main_thread, ctx->drag);
|
|
g_free (This);
|
|
}
|
|
|
|
return ref_count;
|
|
}
|
|
|
|
/* NOTE: This method is called continuously, even if nothing is
|
|
* happening, as long as the drag operation is in progress.
|
|
* It is OK to return a "safe" value (S_OK, to keep the drag
|
|
* operation going) even if something notable happens, because
|
|
* we will have another opportunity to return the "right" value
|
|
* (once we know what it is, after GTK processes the events we
|
|
* send out) very soon.
|
|
* Note that keyboard-related state in this function is nonsense,
|
|
* as DoDragDrop doesn't get precise information about the keyboard,
|
|
* especially the fEscapePressed argument.
|
|
*/
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idropsource_querycontinuedrag (LPDROPSOURCE This,
|
|
BOOL fEscapePressed,
|
|
DWORD grfKeyState)
|
|
{
|
|
source_drag_context *ctx = (source_drag_context *) This;
|
|
|
|
GDK_NOTE (DND, g_print ("idropsource_querycontinuedrag %p esc=%d keystate=0x%lx with state %d\n", This, fEscapePressed, grfKeyState, ctx->util_data.state));
|
|
|
|
if (!dnd_queue_is_empty ())
|
|
process_dnd_queue (FALSE, 0, NULL);
|
|
|
|
GDK_NOTE (DND, g_print ("idropsource_querycontinuedrag state %d\n", ctx->util_data.state));
|
|
|
|
if (ctx->util_data.state == GDK_WIN32_DND_DROPPED)
|
|
{
|
|
GDK_NOTE (DND, g_print ("DRAGDROP_S_DROP\n"));
|
|
return DRAGDROP_S_DROP;
|
|
}
|
|
else if (ctx->util_data.state == GDK_WIN32_DND_NONE)
|
|
{
|
|
GDK_NOTE (DND, g_print ("DRAGDROP_S_CANCEL\n"));
|
|
return DRAGDROP_S_CANCEL;
|
|
}
|
|
else
|
|
{
|
|
GDK_NOTE (DND, g_print ("S_OK\n"));
|
|
return S_OK;
|
|
}
|
|
}
|
|
|
|
static void
|
|
maybe_emit_action_changed (GdkWin32Drag *drag_win32,
|
|
GdkDragAction actions)
|
|
{
|
|
if (actions != drag_win32->current_action)
|
|
{
|
|
drag_win32->current_action = actions;
|
|
gdk_drag_set_selected_action (GDK_DRAG (drag_win32), actions);
|
|
}
|
|
}
|
|
|
|
void
|
|
_gdk_win32_local_drag_give_feedback (GdkDrag *drag,
|
|
GdkDragAction actions)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
if (drag_win32->drag_status == GDK_DRAG_STATUS_MOTION_WAIT)
|
|
drag_win32->drag_status = GDK_DRAG_STATUS_DRAG;
|
|
|
|
GDK_NOTE (DND, g_print ("_gdk_win32_local_drag_give_feedback: 0x%p\n",
|
|
drag));
|
|
|
|
maybe_emit_action_changed (drag_win32, actions);
|
|
}
|
|
|
|
static gboolean
|
|
give_feedback (gpointer user_data)
|
|
{
|
|
GdkWin32DnDThreadGiveFeedback *feedback = (GdkWin32DnDThreadGiveFeedback *) user_data;
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
gpointer ddd = g_hash_table_lookup (clipdrop->active_source_drags, feedback->base.opaque_context);
|
|
|
|
if (ddd)
|
|
{
|
|
GdkDrag *drag = GDK_DRAG (feedback->base.opaque_context);
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_dnd_handle_drag_status: 0x%p\n",
|
|
drag));
|
|
|
|
maybe_emit_action_changed (drag_win32, action_for_drop_effect (feedback->received_drop_effect));
|
|
}
|
|
|
|
free_queue_item (&feedback->base);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idropsource_givefeedback (LPDROPSOURCE This,
|
|
DWORD dwEffect)
|
|
{
|
|
source_drag_context *ctx = (source_drag_context *) This;
|
|
GdkWin32DnDThreadGiveFeedback *feedback;
|
|
|
|
GDK_NOTE (DND, g_print ("idropsource_givefeedback %p with drop effect %lu S_OK\n", This, dwEffect));
|
|
|
|
if (!dnd_queue_is_empty ())
|
|
process_dnd_queue (FALSE, 0, NULL);
|
|
|
|
feedback = g_new0 (GdkWin32DnDThreadGiveFeedback, 1);
|
|
feedback->base.item_type = GDK_WIN32_DND_THREAD_QUEUE_ITEM_GIVE_FEEDBACK;
|
|
feedback->base.opaque_context = ctx->drag;
|
|
feedback->received_drop_effect = dwEffect;
|
|
|
|
g_idle_add_full (G_PRIORITY_DEFAULT, give_feedback, feedback, NULL);
|
|
|
|
GDK_NOTE (DND, g_print ("idropsource_givefeedback %p returns\n", This));
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static ULONG STDMETHODCALLTYPE
|
|
idataobject_addref (LPDATAOBJECT This)
|
|
{
|
|
data_object *dobj = (data_object *) This;
|
|
int ref_count = ++dobj->ref_count;
|
|
|
|
GDK_NOTE (DND, g_print ("idataobject_addref %p %d\n", This, ref_count));
|
|
|
|
return ref_count;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_queryinterface (LPDATAOBJECT This,
|
|
REFIID riid,
|
|
LPVOID *ppvObject)
|
|
{
|
|
GDK_NOTE (DND, {
|
|
g_print ("idataobject_queryinterface %p ", This);
|
|
PRINT_GUID (riid);
|
|
});
|
|
|
|
*ppvObject = NULL;
|
|
|
|
if (IsEqualGUID (riid, &IID_IUnknown))
|
|
{
|
|
GDK_NOTE (DND, g_print ("...IUnknown S_OK\n"));
|
|
idataobject_addref (This);
|
|
*ppvObject = This;
|
|
return S_OK;
|
|
}
|
|
else if (IsEqualGUID (riid, &IID_IDataObject))
|
|
{
|
|
GDK_NOTE (DND, g_print ("...IDataObject S_OK\n"));
|
|
idataobject_addref (This);
|
|
*ppvObject = This;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
GDK_NOTE (DND, g_print ("...E_NOINTERFACE\n"));
|
|
return E_NOINTERFACE;
|
|
}
|
|
}
|
|
|
|
static ULONG STDMETHODCALLTYPE
|
|
idataobject_release (LPDATAOBJECT This)
|
|
{
|
|
data_object *dobj = (data_object *) This;
|
|
int ref_count = --dobj->ref_count;
|
|
|
|
GDK_NOTE (DND, g_print ("idataobject_release %p %d\n", This, ref_count));
|
|
|
|
if (ref_count == 0)
|
|
{
|
|
g_array_free (dobj->formats, TRUE);
|
|
g_free (This);
|
|
}
|
|
|
|
return ref_count;
|
|
}
|
|
|
|
static HRESULT
|
|
query (LPDATAOBJECT This,
|
|
LPFORMATETC pFormatEtc,
|
|
GdkWin32ContentFormatPair **pair)
|
|
{
|
|
data_object *ctx = (data_object *) This;
|
|
gint i;
|
|
|
|
if (pair)
|
|
*pair = NULL;
|
|
|
|
if (!pFormatEtc)
|
|
return DV_E_FORMATETC;
|
|
|
|
if (pFormatEtc->lindex != -1)
|
|
return DV_E_LINDEX;
|
|
|
|
if ((pFormatEtc->tymed & TYMED_HGLOBAL) == 0)
|
|
return DV_E_TYMED;
|
|
|
|
if ((pFormatEtc->dwAspect & DVASPECT_CONTENT) == 0)
|
|
return DV_E_DVASPECT;
|
|
|
|
for (i = 0; i < ctx->formats->len; i++)
|
|
{
|
|
GdkWin32ContentFormatPair *p = &g_array_index (ctx->formats, GdkWin32ContentFormatPair, i);
|
|
if (pFormatEtc->cfFormat == p->w32format)
|
|
{
|
|
if (pair)
|
|
*pair = p;
|
|
|
|
return S_OK;
|
|
}
|
|
}
|
|
|
|
return DV_E_FORMATETC;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_getdata (LPDATAOBJECT This,
|
|
LPFORMATETC pFormatEtc,
|
|
LPSTGMEDIUM pMedium)
|
|
{
|
|
data_object *ctx = (data_object *) This;
|
|
HRESULT hr;
|
|
GdkWin32DnDThreadGetData *getdata;
|
|
GdkWin32ContentFormatPair *pair;
|
|
|
|
if (ctx->drag == NULL)
|
|
return E_FAIL;
|
|
|
|
GDK_NOTE (DND, g_print ("idataobject_getdata %p %s ",
|
|
This, _gdk_win32_cf_to_string (pFormatEtc->cfFormat)));
|
|
|
|
/* Check whether we can provide requested format */
|
|
hr = query (This, pFormatEtc, &pair);
|
|
|
|
if (hr != S_OK)
|
|
{
|
|
GDK_NOTE (DND, g_print ("Unsupported format, returning 0x%lx\n", hr));
|
|
return hr;
|
|
}
|
|
|
|
if (!dnd_queue_is_empty ())
|
|
process_dnd_queue (FALSE, 0, NULL);
|
|
|
|
getdata = g_new0 (GdkWin32DnDThreadGetData, 1);
|
|
getdata->base.item_type = GDK_WIN32_DND_THREAD_QUEUE_ITEM_GET_DATA;
|
|
getdata->base.opaque_context = (gpointer) ctx->drag;
|
|
getdata->pair = *pair;
|
|
g_idle_add_full (G_PRIORITY_DEFAULT, get_data_response, getdata, NULL);
|
|
|
|
if (!process_dnd_queue (TRUE, g_get_monotonic_time () + G_USEC_PER_SEC * 30, getdata))
|
|
return E_FAIL;
|
|
|
|
if (getdata->produced_data_medium.tymed == TYMED_NULL)
|
|
{
|
|
free_queue_item (&getdata->base);
|
|
|
|
return E_FAIL;
|
|
}
|
|
|
|
memcpy (pMedium, &getdata->produced_data_medium, sizeof (*pMedium));
|
|
|
|
/* To ensure that the data isn't freed */
|
|
getdata->produced_data_medium.tymed = TYMED_NULL;
|
|
|
|
free_queue_item (&getdata->base);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_getdatahere (LPDATAOBJECT This,
|
|
LPFORMATETC pFormatEtc,
|
|
LPSTGMEDIUM pMedium)
|
|
{
|
|
GDK_NOTE (DND, g_print ("idataobject_getdatahere %p E_NOTIMPL\n", This));
|
|
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_querygetdata (LPDATAOBJECT This,
|
|
LPFORMATETC pFormatEtc)
|
|
{
|
|
HRESULT hr;
|
|
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread != g_thread_self ());
|
|
|
|
hr = query (This, pFormatEtc, NULL);
|
|
|
|
GDK_NOTE (DND,
|
|
g_print ("idataobject_querygetdata %p 0x%08x fmt, %p ptd, %lu aspect, %ld lindex, %0lx tymed - %s, return %#lx (%s)\n",
|
|
This, pFormatEtc->cfFormat, pFormatEtc->ptd, pFormatEtc->dwAspect, pFormatEtc->lindex, pFormatEtc->tymed, _gdk_win32_cf_to_string (pFormatEtc->cfFormat),
|
|
hr, (hr == S_OK) ? "S_OK" : (hr == DV_E_FORMATETC) ? "DV_E_FORMATETC" : (hr == DV_E_LINDEX) ? "DV_E_LINDEX" : (hr == DV_E_TYMED) ? "DV_E_TYMED" : (hr == DV_E_DVASPECT) ? "DV_E_DVASPECT" : "uknown meaning"));
|
|
|
|
return hr;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_getcanonicalformatetc (LPDATAOBJECT This,
|
|
LPFORMATETC pFormatEtcIn,
|
|
LPFORMATETC pFormatEtcOut)
|
|
{
|
|
GDK_NOTE (DND, g_print ("idataobject_getcanonicalformatetc %p E_NOTIMPL\n", This));
|
|
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_setdata (LPDATAOBJECT This,
|
|
LPFORMATETC pFormatEtc,
|
|
LPSTGMEDIUM pMedium,
|
|
BOOL fRelease)
|
|
{
|
|
GDK_NOTE (DND, g_print ("idataobject_setdata %p %s E_NOTIMPL\n",
|
|
This, _gdk_win32_cf_to_string (pFormatEtc->cfFormat)));
|
|
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_enumformatetc (LPDATAOBJECT This,
|
|
DWORD dwDirection,
|
|
LPENUMFORMATETC *ppEnumFormatEtc)
|
|
{
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread != g_thread_self ());
|
|
|
|
if (dwDirection != DATADIR_GET)
|
|
{
|
|
GDK_NOTE (DND, g_print ("idataobject_enumformatetc %p E_NOTIMPL", This));
|
|
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
*ppEnumFormatEtc = &enum_formats_new (((data_object *) This)->formats)->ief;
|
|
|
|
GDK_NOTE (DND, g_print ("idataobject_enumformatetc %p -> %p S_OK", This, *ppEnumFormatEtc));
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_dadvise (LPDATAOBJECT This,
|
|
LPFORMATETC pFormatetc,
|
|
DWORD advf,
|
|
LPADVISESINK pAdvSink,
|
|
DWORD *pdwConnection)
|
|
{
|
|
GDK_NOTE (DND, g_print ("idataobject_dadvise %p E_NOTIMPL\n", This));
|
|
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_dunadvise (LPDATAOBJECT This,
|
|
DWORD dwConnection)
|
|
{
|
|
GDK_NOTE (DND, g_print ("idataobject_dunadvise %p E_NOTIMPL\n", This));
|
|
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
idataobject_enumdadvise (LPDATAOBJECT This,
|
|
LPENUMSTATDATA *ppenumAdvise)
|
|
{
|
|
GDK_NOTE (DND, g_print ("idataobject_enumdadvise %p OLE_E_ADVISENOTSUPPORTED\n", This));
|
|
|
|
return OLE_E_ADVISENOTSUPPORTED;
|
|
}
|
|
|
|
static ULONG STDMETHODCALLTYPE
|
|
ienumformatetc_addref (LPENUMFORMATETC This)
|
|
{
|
|
enum_formats *en = (enum_formats *) This;
|
|
int ref_count = ++en->ref_count;
|
|
|
|
GDK_NOTE (DND, g_print ("ienumformatetc_addref %p %d\n", This, ref_count));
|
|
|
|
return ref_count;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
ienumformatetc_queryinterface (LPENUMFORMATETC This,
|
|
REFIID riid,
|
|
LPVOID *ppvObject)
|
|
{
|
|
GDK_NOTE (DND, {
|
|
g_print ("ienumformatetc_queryinterface %p", This);
|
|
PRINT_GUID (riid);
|
|
});
|
|
|
|
*ppvObject = NULL;
|
|
|
|
if (IsEqualGUID (riid, &IID_IUnknown))
|
|
{
|
|
GDK_NOTE (DND, g_print ("...IUnknown S_OK\n"));
|
|
ienumformatetc_addref (This);
|
|
*ppvObject = This;
|
|
return S_OK;
|
|
}
|
|
else if (IsEqualGUID (riid, &IID_IEnumFORMATETC))
|
|
{
|
|
GDK_NOTE (DND, g_print ("...IEnumFORMATETC S_OK\n"));
|
|
ienumformatetc_addref (This);
|
|
*ppvObject = This;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
GDK_NOTE (DND, g_print ("...E_NOINTERFACE\n"));
|
|
return E_NOINTERFACE;
|
|
}
|
|
}
|
|
|
|
static ULONG STDMETHODCALLTYPE
|
|
ienumformatetc_release (LPENUMFORMATETC This)
|
|
{
|
|
enum_formats *en = (enum_formats *) This;
|
|
int ref_count = --en->ref_count;
|
|
|
|
GDK_NOTE (DND, g_print ("ienumformatetc_release %p %d\n", This, ref_count));
|
|
|
|
if (ref_count == 0)
|
|
{
|
|
g_array_unref (en->formats);
|
|
g_free (This);
|
|
}
|
|
|
|
return ref_count;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
ienumformatetc_next (LPENUMFORMATETC This,
|
|
ULONG celt,
|
|
LPFORMATETC elts,
|
|
ULONG *nelt)
|
|
{
|
|
enum_formats *en = (enum_formats *) This;
|
|
ULONG i, n;
|
|
ULONG formats_to_get = celt;
|
|
|
|
GDK_NOTE (DND, g_print ("ienumformatetc_next %p %d %ld ", This, en->ix, celt));
|
|
|
|
n = 0;
|
|
for (i = 0; i < formats_to_get; i++)
|
|
{
|
|
UINT fmt;
|
|
if (en->ix >= en->formats->len)
|
|
break;
|
|
fmt = g_array_index (en->formats, GdkWin32ContentFormatPair, en->ix++).w32format;
|
|
/* skip internals */
|
|
if (fmt == 0 || fmt > 0xFFFF)
|
|
{
|
|
formats_to_get += 1;
|
|
continue;
|
|
}
|
|
elts[n].cfFormat = fmt;
|
|
elts[n].ptd = NULL;
|
|
elts[n].dwAspect = DVASPECT_CONTENT;
|
|
elts[n].lindex = -1;
|
|
elts[n].tymed = TYMED_HGLOBAL;
|
|
|
|
n++;
|
|
}
|
|
|
|
if (nelt != NULL)
|
|
*nelt = n;
|
|
|
|
GDK_NOTE (DND, g_print ("%s\n", (n == celt) ? "S_OK" : "S_FALSE"));
|
|
|
|
if (n == celt)
|
|
return S_OK;
|
|
else
|
|
return S_FALSE;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
ienumformatetc_skip (LPENUMFORMATETC This,
|
|
ULONG celt)
|
|
{
|
|
enum_formats *en = (enum_formats *) This;
|
|
|
|
GDK_NOTE (DND, g_print ("ienumformatetc_skip %p %d %ld S_OK\n", This, en->ix, celt));
|
|
|
|
en->ix += celt;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
ienumformatetc_reset (LPENUMFORMATETC This)
|
|
{
|
|
enum_formats *en = (enum_formats *) This;
|
|
|
|
GDK_NOTE (DND, g_print ("ienumformatetc_reset %p S_OK\n", This));
|
|
|
|
en->ix = 0;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static HRESULT STDMETHODCALLTYPE
|
|
ienumformatetc_clone (LPENUMFORMATETC This,
|
|
LPENUMFORMATETC *ppEnumFormatEtc)
|
|
{
|
|
enum_formats *en = (enum_formats *) This;
|
|
enum_formats *new;
|
|
|
|
GDK_NOTE (DND, g_print ("ienumformatetc_clone %p S_OK\n", This));
|
|
|
|
new = enum_formats_new (en->formats);
|
|
|
|
new->ix = en->ix;
|
|
|
|
*ppEnumFormatEtc = &new->ief;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
static IDropSourceVtbl ids_vtbl = {
|
|
idropsource_queryinterface,
|
|
idropsource_addref,
|
|
idropsource_release,
|
|
idropsource_querycontinuedrag,
|
|
idropsource_givefeedback
|
|
};
|
|
|
|
static IDropSourceNotifyVtbl idsn_vtbl = {
|
|
(HRESULT (STDMETHODCALLTYPE *) (IDropSourceNotify *, REFIID , LPVOID *)) idropsource_queryinterface,
|
|
(ULONG (STDMETHODCALLTYPE *) (IDropSourceNotify *)) idropsource_addref,
|
|
(ULONG (STDMETHODCALLTYPE *) (IDropSourceNotify *)) idropsource_release,
|
|
idropsourcenotify_dragentertarget,
|
|
idropsourcenotify_dragleavetarget
|
|
};
|
|
|
|
static IDataObjectVtbl ido_vtbl = {
|
|
idataobject_queryinterface,
|
|
idataobject_addref,
|
|
idataobject_release,
|
|
idataobject_getdata,
|
|
idataobject_getdatahere,
|
|
idataobject_querygetdata,
|
|
idataobject_getcanonicalformatetc,
|
|
idataobject_setdata,
|
|
idataobject_enumformatetc,
|
|
idataobject_dadvise,
|
|
idataobject_dunadvise,
|
|
idataobject_enumdadvise
|
|
};
|
|
|
|
static IEnumFORMATETCVtbl ief_vtbl = {
|
|
ienumformatetc_queryinterface,
|
|
ienumformatetc_addref,
|
|
ienumformatetc_release,
|
|
ienumformatetc_next,
|
|
ienumformatetc_skip,
|
|
ienumformatetc_reset,
|
|
ienumformatetc_clone
|
|
};
|
|
|
|
static source_drag_context *
|
|
source_context_new (GdkDrag *drag,
|
|
GdkContentFormats *formats)
|
|
{
|
|
GdkWin32Drag *drag_win32;
|
|
source_drag_context *result;
|
|
GdkSurface *surface;
|
|
|
|
drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
g_object_get (drag, "surface", &surface, NULL);
|
|
|
|
result = g_new0 (source_drag_context, 1);
|
|
result->drag = g_object_ref (drag);
|
|
result->ids.lpVtbl = &ids_vtbl;
|
|
result->idsn.lpVtbl = &idsn_vtbl;
|
|
result->ref_count = 1;
|
|
result->source_window_handle = GDK_SURFACE_HWND (surface);
|
|
result->scale = drag_win32->scale;
|
|
result->util_data.state = GDK_WIN32_DND_PENDING; /* Implicit */
|
|
result->dest_window_handle = INVALID_HANDLE_VALUE;
|
|
|
|
g_object_unref (surface);
|
|
|
|
GDK_NOTE (DND, g_print ("source_context_new: %p (drag %p)\n", result, result->drag));
|
|
|
|
return result;
|
|
}
|
|
|
|
static data_object *
|
|
data_object_new (GdkDrag *drag)
|
|
{
|
|
data_object *result;
|
|
const char * const *mime_types;
|
|
gsize n_mime_types, i;
|
|
|
|
result = g_new0 (data_object, 1);
|
|
|
|
result->ido.lpVtbl = &ido_vtbl;
|
|
result->ref_count = 1;
|
|
result->drag = drag;
|
|
result->formats = g_array_new (FALSE, FALSE, sizeof (GdkWin32ContentFormatPair));
|
|
|
|
mime_types = gdk_content_formats_get_mime_types (gdk_drag_get_formats (drag), &n_mime_types);
|
|
|
|
for (i = 0; i < n_mime_types; i++)
|
|
{
|
|
gint added_count = 0;
|
|
gint j;
|
|
|
|
GDK_NOTE (DND, g_print ("DataObject supports contentformat 0x%p (%s)\n", mime_types[i], mime_types[i]));
|
|
|
|
added_count = _gdk_win32_add_contentformat_to_pairs (mime_types[i], result->formats);
|
|
|
|
for (j = 0; j < added_count && result->formats->len - 1 - j >= 0; j++)
|
|
GDK_NOTE (DND, g_print ("DataObject will support w32format 0x%x\n", g_array_index (result->formats, GdkWin32ContentFormatPair, j).w32format));
|
|
}
|
|
|
|
GDK_NOTE (DND, g_print ("data_object_new: %p\n", result));
|
|
|
|
return result;
|
|
}
|
|
|
|
static enum_formats *
|
|
enum_formats_new (GArray *formats)
|
|
{
|
|
enum_formats *result;
|
|
|
|
result = g_new0 (enum_formats, 1);
|
|
|
|
result->ief.lpVtbl = &ief_vtbl;
|
|
result->ref_count = 1;
|
|
result->ix = 0;
|
|
result->formats = g_array_ref (formats);
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
_gdk_drag_init (void)
|
|
{
|
|
CoInitializeEx (NULL, COINIT_APARTMENTTHREADED);
|
|
|
|
if (g_strcmp0 (getenv ("GDK_WIN32_OLE2_DND"), "0") == 0)
|
|
use_ole2_dnd = FALSE;
|
|
|
|
if (use_ole2_dnd)
|
|
{
|
|
HRESULT hr;
|
|
|
|
hr = OleInitialize (NULL);
|
|
|
|
if (! SUCCEEDED (hr))
|
|
g_error ("OleInitialize failed");
|
|
}
|
|
}
|
|
|
|
void
|
|
_gdk_win32_dnd_exit (void)
|
|
{
|
|
if (use_ole2_dnd)
|
|
{
|
|
OleUninitialize ();
|
|
}
|
|
|
|
CoUninitialize ();
|
|
}
|
|
|
|
static GdkSurface *
|
|
create_drag_surface (GdkDisplay *display)
|
|
{
|
|
GdkSurface *surface;
|
|
|
|
surface = gdk_surface_new_temp (display, &(GdkRectangle) { 0, 0, 100, 100 });
|
|
|
|
return surface;
|
|
}
|
|
|
|
GdkDrag *
|
|
_gdk_win32_surface_drag_begin (GdkSurface *surface,
|
|
GdkDevice *device,
|
|
GdkContentProvider *content,
|
|
GdkDragAction actions,
|
|
double dx,
|
|
double dy)
|
|
{
|
|
GdkDrag *drag;
|
|
GdkWin32Drag *drag_win32;
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
double px, py;
|
|
int x_root, y_root;
|
|
|
|
g_return_val_if_fail (surface != NULL, NULL);
|
|
|
|
drag = gdk_drag_new (gdk_surface_get_display (surface),
|
|
surface,
|
|
content,
|
|
actions,
|
|
device,
|
|
use_ole2_dnd ? GDK_DRAG_PROTO_OLE2 : GDK_DRAG_PROTO_LOCAL);
|
|
drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
GDK_NOTE (DND, g_print ("_gdk_win32_surface_drag_begin\n"));
|
|
|
|
gdk_device_get_position (device, &px, &py);
|
|
x_root = round (px + dx);
|
|
y_root = round (py + dy);
|
|
|
|
drag_win32->start_x = x_root;
|
|
drag_win32->start_y = y_root;
|
|
drag_win32->util_data.last_x = drag_win32->start_x;
|
|
drag_win32->util_data.last_y = drag_win32->start_y;
|
|
|
|
g_set_object (&drag_win32->grab_surface, surface);
|
|
|
|
drag_win32->drag_surface = create_drag_surface (gdk_surface_get_display (surface));
|
|
|
|
if (!drag_context_grab (drag))
|
|
{
|
|
g_object_unref (drag);
|
|
return FALSE;
|
|
}
|
|
|
|
if (drag_win32->protocol == GDK_DRAG_PROTO_OLE2)
|
|
{
|
|
GdkWin32DnDThreadDoDragDrop *ddd = g_new0 (GdkWin32DnDThreadDoDragDrop, 1);
|
|
source_drag_context *source_ctx;
|
|
data_object *data_obj;
|
|
|
|
source_ctx = source_context_new (drag, gdk_drag_get_formats (drag));
|
|
data_obj = data_object_new (drag);
|
|
|
|
ddd->base.item_type = GDK_WIN32_DND_THREAD_QUEUE_ITEM_DO_DRAG_DROP;
|
|
ddd->base.opaque_context = drag_win32;
|
|
ddd->src_context = source_ctx;
|
|
ddd->src_object = data_obj;
|
|
ddd->allowed_drop_effects = 0;
|
|
if (actions & GDK_ACTION_COPY)
|
|
ddd->allowed_drop_effects |= DROPEFFECT_COPY;
|
|
if (actions & GDK_ACTION_MOVE)
|
|
ddd->allowed_drop_effects |= DROPEFFECT_MOVE;
|
|
if (actions & GDK_ACTION_LINK)
|
|
ddd->allowed_drop_effects |= DROPEFFECT_LINK;
|
|
|
|
g_hash_table_replace (clipdrop->active_source_drags, g_object_ref (drag), ddd);
|
|
increment_dnd_queue_counter ();
|
|
g_async_queue_push (clipdrop->dnd_queue, ddd);
|
|
API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id, thread_wakeup_message, 0, 0));
|
|
|
|
drag_win32->util_data.state = GDK_WIN32_DND_PENDING;
|
|
}
|
|
|
|
move_drag_surface (drag, x_root, y_root);
|
|
|
|
return drag;
|
|
}
|
|
|
|
/* TODO: remove this?
|
|
* window finder is only used by our gdk_drag_update() to
|
|
* find the window at drag coordinates - which is
|
|
* something IDropSourceNotify already gives us.
|
|
* Unless, of course, we keep the LOCAL protocol around.
|
|
*/
|
|
typedef struct {
|
|
gint x;
|
|
gint y;
|
|
HWND ignore;
|
|
HWND result;
|
|
} find_window_enum_arg;
|
|
|
|
static BOOL CALLBACK
|
|
find_window_enum_proc (HWND hwnd,
|
|
LPARAM lparam)
|
|
{
|
|
RECT rect;
|
|
POINT tl, br;
|
|
find_window_enum_arg *a = (find_window_enum_arg *) lparam;
|
|
|
|
if (hwnd == a->ignore)
|
|
return TRUE;
|
|
|
|
if (!IsWindowVisible (hwnd))
|
|
return TRUE;
|
|
|
|
tl.x = tl.y = 0;
|
|
ClientToScreen (hwnd, &tl);
|
|
GetClientRect (hwnd, &rect);
|
|
br.x = rect.right;
|
|
br.y = rect.bottom;
|
|
ClientToScreen (hwnd, &br);
|
|
|
|
if (a->x >= tl.x && a->y >= tl.y && a->x < br.x && a->y < br.y)
|
|
{
|
|
a->result = hwnd;
|
|
return FALSE;
|
|
}
|
|
else
|
|
return TRUE;
|
|
}
|
|
|
|
/* Finds the HWND under cursor. Local DnD protcol
|
|
* uses this function, since local protocol is implemented
|
|
* entirely in GDK and cannot rely on the OS to notify
|
|
* drop targets about drags that move over them.
|
|
*/
|
|
static HWND
|
|
gdk_win32_drag_find_window (GdkDrag *drag,
|
|
GdkSurface *drag_surface,
|
|
gint x_root,
|
|
gint y_root)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
find_window_enum_arg a;
|
|
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread == g_thread_self ());
|
|
|
|
a.x = x_root * drag_win32->scale - _gdk_offset_x;
|
|
a.y = y_root * drag_win32->scale - _gdk_offset_y;
|
|
a.ignore = drag_surface ? GDK_SURFACE_HWND (drag_surface) : NULL;
|
|
a.result = INVALID_HANDLE_VALUE;
|
|
|
|
GDK_NOTE (DND,
|
|
g_print ("gdk_win32_drag_find_window: %p %+d%+d\n",
|
|
(drag_surface ? GDK_SURFACE_HWND (drag_surface) : NULL),
|
|
a.x, a.y));
|
|
|
|
EnumWindows (find_window_enum_proc, (LPARAM) &a);
|
|
|
|
GDK_NOTE (DND,
|
|
g_print ("gdk_win32_drag_find_window: %p %+d%+d: %p\n",
|
|
(drag_surface ? GDK_SURFACE_HWND (drag_surface) : NULL),
|
|
x_root, y_root,
|
|
a.result));
|
|
|
|
return a.result;
|
|
}
|
|
|
|
static DWORD
|
|
manufacture_keystate_from_GMT (GdkModifierType state)
|
|
{
|
|
DWORD key_state = 0;
|
|
|
|
if (state & GDK_ALT_MASK)
|
|
key_state |= MK_ALT;
|
|
if (state & GDK_CONTROL_MASK)
|
|
key_state |= MK_CONTROL;
|
|
if (state & GDK_SHIFT_MASK)
|
|
key_state |= MK_SHIFT;
|
|
if (state & GDK_BUTTON1_MASK)
|
|
key_state |= MK_LBUTTON;
|
|
if (state & GDK_BUTTON2_MASK)
|
|
key_state |= MK_MBUTTON;
|
|
if (state & GDK_BUTTON3_MASK)
|
|
key_state |= MK_RBUTTON;
|
|
|
|
return key_state;
|
|
}
|
|
|
|
/* This only works if dest_window our window and the DnD operation
|
|
* is currently local to the application.
|
|
*/
|
|
static GdkDrop *
|
|
_gdk_win32_get_drop_for_dest_window (HWND dest_window)
|
|
{
|
|
GdkSurface *drop_surface = gdk_win32_handle_table_lookup (dest_window);
|
|
GdkDrop *result = NULL;
|
|
|
|
if (drop_surface)
|
|
result = _gdk_win32_get_drop_for_dest_surface (drop_surface);
|
|
|
|
return result;
|
|
}
|
|
|
|
static gboolean
|
|
gdk_win32_local_drag_motion (GdkDrag *drag,
|
|
HWND dest_window,
|
|
gint x_root,
|
|
gint y_root,
|
|
GdkDragAction possible_actions,
|
|
DWORD key_state,
|
|
guint32 time_)
|
|
{
|
|
GdkWin32Drag *drag_win32;
|
|
GdkDrop *drop;
|
|
GdkDragAction actions;
|
|
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread == g_thread_self ());
|
|
|
|
g_return_val_if_fail (drag != NULL, FALSE);
|
|
|
|
drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
drop = _gdk_win32_get_drop_for_dest_window (drag_win32->dest_window);
|
|
|
|
actions = gdk_drag_get_actions (drag);
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_win32_local_drag_motion: @ %+d:%+d possible=%s\n"
|
|
" dest=%p (current %p) drop=%p drag=%p:{actions=%s,action=%s}\n",
|
|
x_root, y_root,
|
|
_gdk_win32_drag_action_to_string (possible_actions),
|
|
dest_window, drag_win32->dest_window, drop, drag,
|
|
_gdk_win32_drag_action_to_string (actions),
|
|
_gdk_win32_drag_action_to_string (gdk_drag_get_selected_action (drag))));
|
|
|
|
if (drag_win32->dest_window != dest_window)
|
|
{
|
|
/* Send a leave to the last destination */
|
|
if (drop)
|
|
_gdk_win32_local_drop_target_dragleave (drop, time_);
|
|
|
|
drag_win32->dest_window = dest_window;
|
|
drag_win32->drag_status = GDK_DRAG_STATUS_DRAG;
|
|
|
|
_gdk_win32_local_drop_target_dragenter (drag,
|
|
gdk_win32_handle_table_lookup (dest_window),
|
|
x_root,
|
|
y_root,
|
|
key_state,
|
|
time_,
|
|
&actions);
|
|
|
|
drop = _gdk_win32_get_drop_for_dest_window (drag_win32->dest_window);
|
|
maybe_emit_action_changed (drag_win32, actions);
|
|
}
|
|
|
|
/* Send a drag-motion event */
|
|
|
|
drag_win32->util_data.last_x = x_root;
|
|
drag_win32->util_data.last_y = y_root;
|
|
|
|
if (drop != NULL &&
|
|
drag_win32->drag_status == GDK_DRAG_STATUS_DRAG &&
|
|
_gdk_win32_local_drop_target_will_emit_motion (drop, x_root, y_root, key_state))
|
|
{
|
|
actions = gdk_drag_get_actions (drag);
|
|
drag_win32->drag_status = GDK_DRAG_STATUS_MOTION_WAIT;
|
|
|
|
_gdk_win32_local_drop_target_dragover (drop, drag, x_root, y_root, key_state, time_, &actions);
|
|
|
|
maybe_emit_action_changed (drag_win32, actions);
|
|
}
|
|
|
|
GDK_NOTE (DND, g_print (" returning %s\n"
|
|
" drag=%p:{actions=%s,action=%s}\n",
|
|
(drop != NULL && drag_win32->drag_status == GDK_DRAG_STATUS_DRAG) ? "TRUE" : "FALSE",
|
|
drag,
|
|
_gdk_win32_drag_action_to_string (gdk_drag_get_actions (drag)),
|
|
_gdk_win32_drag_action_to_string (gdk_drag_get_selected_action (drag))));
|
|
return (drop != NULL && drag_win32->drag_status == GDK_DRAG_STATUS_DRAG);
|
|
}
|
|
|
|
static void
|
|
send_source_state_update (GdkWin32Clipdrop *clipdrop,
|
|
GdkWin32Drag *drag_win32,
|
|
gpointer *ddd)
|
|
{
|
|
GdkWin32DnDThreadUpdateDragState *status = g_new0 (GdkWin32DnDThreadUpdateDragState, 1);
|
|
status->base.item_type = GDK_WIN32_DND_THREAD_QUEUE_ITEM_UPDATE_DRAG_STATE;
|
|
status->opaque_ddd = ddd;
|
|
status->produced_util_data = drag_win32->util_data;
|
|
increment_dnd_queue_counter ();
|
|
g_async_queue_push (clipdrop->dnd_queue, status);
|
|
API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id, thread_wakeup_message, 0, 0));
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_drop (GdkDrag *drag,
|
|
guint32 time_)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread == g_thread_self ());
|
|
|
|
g_return_if_fail (drag != NULL);
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_win32_drag_drop\n"));
|
|
|
|
if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
|
|
{
|
|
GdkDrop *drop = _gdk_win32_get_drop_for_dest_window (drag_win32->dest_window);
|
|
|
|
if (drop)
|
|
{
|
|
GdkDragAction actions;
|
|
|
|
actions = gdk_drag_get_actions (drag);
|
|
_gdk_win32_local_drop_target_drop (drop, drag, time_, &actions);
|
|
maybe_emit_action_changed (drag_win32, actions);
|
|
_gdk_win32_local_drag_drop_response (drag, actions);
|
|
}
|
|
}
|
|
else if (drag_win32->protocol == GDK_DRAG_PROTO_OLE2)
|
|
{
|
|
gpointer ddd = g_hash_table_lookup (clipdrop->active_source_drags, drag);
|
|
|
|
drag_win32->util_data.state = GDK_WIN32_DND_DROPPED;
|
|
|
|
if (ddd)
|
|
send_source_state_update (clipdrop, drag_win32, ddd);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_set_cursor (GdkDrag *drag,
|
|
GdkCursor *cursor)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_win32_drag_set_cursor: 0x%p 0x%p\n", drag, cursor));
|
|
|
|
if (!g_set_object (&drag_win32->cursor, cursor))
|
|
return;
|
|
|
|
if (drag_win32->grab_seat)
|
|
{
|
|
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
|
gdk_device_grab (gdk_seat_get_pointer (drag_win32->grab_seat),
|
|
drag_win32->grab_surface,
|
|
GDK_OWNERSHIP_APPLICATION, FALSE,
|
|
GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
|
|
cursor, GDK_CURRENT_TIME);
|
|
G_GNUC_END_IGNORE_DEPRECATIONS;
|
|
}
|
|
}
|
|
|
|
static double
|
|
ease_out_cubic (double t)
|
|
{
|
|
double p = t - 1;
|
|
return p * p * p + 1;
|
|
}
|
|
|
|
#define ANIM_TIME 500000 /* half a second */
|
|
|
|
typedef struct _GdkDragAnim GdkDragAnim;
|
|
struct _GdkDragAnim {
|
|
GdkWin32Drag *drag;
|
|
GdkFrameClock *frame_clock;
|
|
gint64 start_time;
|
|
};
|
|
|
|
static void
|
|
gdk_drag_anim_destroy (GdkDragAnim *anim)
|
|
{
|
|
g_object_unref (anim->drag);
|
|
g_slice_free (GdkDragAnim, anim);
|
|
}
|
|
|
|
static gboolean
|
|
gdk_drag_anim_timeout (gpointer data)
|
|
{
|
|
GdkDragAnim *anim = data;
|
|
GdkWin32Drag *drag = anim->drag;
|
|
GdkFrameClock *frame_clock = anim->frame_clock;
|
|
gint64 current_time;
|
|
double f;
|
|
double t;
|
|
gint x, y;
|
|
|
|
if (!frame_clock)
|
|
return G_SOURCE_REMOVE;
|
|
|
|
current_time = gdk_frame_clock_get_frame_time (frame_clock);
|
|
|
|
f = (current_time - anim->start_time) / (double) ANIM_TIME;
|
|
|
|
if (f >= 1.0)
|
|
return G_SOURCE_REMOVE;
|
|
|
|
t = ease_out_cubic (f);
|
|
|
|
gdk_win32_surface_show (drag->drag_surface, FALSE);
|
|
x = (drag->util_data.last_x +
|
|
(drag->start_x - drag->util_data.last_x) * t -
|
|
drag->hot_x);
|
|
y = (drag->util_data.last_y +
|
|
(drag->start_y - drag->util_data.last_y) * t -
|
|
drag->hot_y);
|
|
gdk_win32_surface_move (drag->drag_surface, x, y);
|
|
gdk_win32_surface_set_opacity (drag->drag_surface, 1.0 - f);
|
|
|
|
return G_SOURCE_CONTINUE;
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_drop_done (GdkDrag *drag,
|
|
gboolean success)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
GdkDragAnim *anim;
|
|
/*
|
|
cairo_surface_t *win_surface;
|
|
cairo_surface_t *surface;
|
|
cairo_t *cr;
|
|
*/
|
|
guint id;
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_win32_drag_drop_done: 0x%p %s\n",
|
|
drag,
|
|
success ? "dropped successfully" : "dropped unsuccessfully"));
|
|
|
|
/* FIXME: This is temporary, until the code is fixed to ensure that
|
|
* gdk_drag_finish () is called by GTK.
|
|
*/
|
|
if (drag_win32->protocol == GDK_DRAG_PROTO_OLE2)
|
|
{
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
gpointer ddd = g_hash_table_lookup (clipdrop->active_source_drags, drag);
|
|
|
|
if (success)
|
|
drag_win32->util_data.state = GDK_WIN32_DND_DROPPED;
|
|
else
|
|
drag_win32->util_data.state = GDK_WIN32_DND_NONE;
|
|
|
|
if (ddd)
|
|
send_source_state_update (clipdrop, drag_win32, ddd);
|
|
}
|
|
else if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
|
|
{
|
|
|
|
}
|
|
|
|
drag_win32->handle_events = FALSE;
|
|
|
|
if (success)
|
|
{
|
|
gdk_surface_hide (drag_win32->drag_surface);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
win_surface = _gdk_surface_ref_cairo_surface (drag_win32->drag_surface);
|
|
surface = gdk_surface_create_similar_surface (drag_win32->drag_surface,
|
|
cairo_surface_get_content (win_surface),
|
|
gdk_surface_get_width (drag_win32->drag_surface),
|
|
gdk_surface_get_height (drag_win32->drag_surface));
|
|
cr = cairo_create (surface);
|
|
cairo_set_source_surface (cr, win_surface, 0, 0);
|
|
cairo_paint (cr);
|
|
cairo_destroy (cr);
|
|
cairo_surface_destroy (win_surface);
|
|
|
|
pattern = cairo_pattern_create_for_surface (surface);
|
|
|
|
gdk_surface_set_background_pattern (drag_win32->drag_surface, pattern);
|
|
|
|
cairo_pattern_destroy (pattern);
|
|
cairo_surface_destroy (surface);
|
|
*/
|
|
|
|
anim = g_slice_new0 (GdkDragAnim);
|
|
g_set_object (&anim->drag, drag_win32);
|
|
anim->frame_clock = gdk_surface_get_frame_clock (drag_win32->drag_surface);
|
|
anim->start_time = gdk_frame_clock_get_frame_time (anim->frame_clock);
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_win32_drag_drop_done: animate the drag window from %d : %d to %d : %d\n",
|
|
drag_win32->util_data.last_x, drag_win32->util_data.last_y,
|
|
drag_win32->start_x, drag_win32->start_y));
|
|
|
|
id = g_timeout_add_full (G_PRIORITY_DEFAULT, 17,
|
|
gdk_drag_anim_timeout, anim,
|
|
(GDestroyNotify) gdk_drag_anim_destroy);
|
|
g_source_set_name_by_id (id, "[gtk] gdk_drag_anim_timeout");
|
|
}
|
|
|
|
static gboolean
|
|
drag_context_grab (GdkDrag *drag)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
GdkSeatCapabilities capabilities;
|
|
GdkSeat *seat;
|
|
GdkCursor *cursor;
|
|
|
|
GDK_NOTE (DND, g_print ("drag_context_grab: 0x%p with grab surface 0x%p\n",
|
|
drag,
|
|
drag_win32->grab_surface));
|
|
|
|
if (!drag_win32->grab_surface)
|
|
return FALSE;
|
|
|
|
seat = gdk_device_get_seat (gdk_drag_get_device (drag));
|
|
|
|
capabilities = GDK_SEAT_CAPABILITY_ALL;
|
|
|
|
cursor = gdk_drag_get_cursor (drag, gdk_drag_get_selected_action (drag));
|
|
g_set_object (&drag_win32->cursor, cursor);
|
|
|
|
if (gdk_seat_grab (seat, drag_win32->grab_surface,
|
|
capabilities, FALSE,
|
|
drag_win32->cursor, NULL, NULL, NULL) != GDK_GRAB_SUCCESS)
|
|
return FALSE;
|
|
|
|
g_set_object (&drag_win32->grab_seat, seat);
|
|
|
|
/* TODO: Should be grabbing keys here, to support keynav. SetWindowsHookEx()? */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
drag_context_ungrab (GdkDrag *drag)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
GDK_NOTE (DND, g_print ("drag_context_ungrab: 0x%p 0x%p\n",
|
|
drag,
|
|
drag_win32->grab_seat));
|
|
|
|
if (!drag_win32->grab_seat)
|
|
return;
|
|
|
|
gdk_seat_ungrab (drag_win32->grab_seat);
|
|
|
|
g_clear_object (&drag_win32->grab_seat);
|
|
|
|
/* TODO: Should be ungrabbing keys here */
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_cancel (GdkDrag *drag,
|
|
GdkDragCancelReason reason)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
const gchar *reason_str = NULL;
|
|
switch (reason)
|
|
{
|
|
case GDK_DRAG_CANCEL_NO_TARGET:
|
|
reason_str = "no target";
|
|
break;
|
|
case GDK_DRAG_CANCEL_USER_CANCELLED:
|
|
reason_str = "user cancelled";
|
|
break;
|
|
case GDK_DRAG_CANCEL_ERROR:
|
|
reason_str = "error";
|
|
break;
|
|
default:
|
|
reason_str = "<unknown>";
|
|
break;
|
|
}
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_win32_drag_cancel: 0x%p %s\n",
|
|
drag,
|
|
reason_str));
|
|
|
|
if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
|
|
{
|
|
GdkDrop *drop = _gdk_win32_get_drop_for_dest_window (drag_win32->dest_window);
|
|
if (drop)
|
|
_gdk_win32_local_drop_target_dragleave (drop, GDK_CURRENT_TIME);
|
|
drop = NULL;
|
|
}
|
|
|
|
gdk_drag_set_cursor (drag, NULL);
|
|
drag_context_ungrab (drag);
|
|
gdk_drag_drop_done (drag, FALSE);
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_drop_performed (GdkDrag *drag,
|
|
guint32 time_)
|
|
{
|
|
GDK_NOTE (DND, g_print ("gdk_win32_drag_drop_performed: 0x%p %u\n",
|
|
drag,
|
|
time_));
|
|
|
|
gdk_win32_drag_drop (drag, time_);
|
|
gdk_drag_set_cursor (drag, NULL);
|
|
drag_context_ungrab (drag);
|
|
}
|
|
|
|
#define BIG_STEP 20
|
|
#define SMALL_STEP 1
|
|
|
|
static void
|
|
gdk_local_drag_update (GdkDrag *drag,
|
|
gdouble x_root,
|
|
gdouble y_root,
|
|
DWORD grfKeyState,
|
|
guint32 evtime)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
HWND dest_window;
|
|
|
|
g_assert (_win32_main_thread == NULL ||
|
|
_win32_main_thread == g_thread_self ());
|
|
|
|
dest_window = gdk_win32_drag_find_window (drag,
|
|
drag_win32->drag_surface,
|
|
x_root, y_root);
|
|
|
|
gdk_win32_local_drag_motion (drag, dest_window, x_root, y_root,
|
|
gdk_drag_get_actions (drag),
|
|
grfKeyState, evtime);
|
|
}
|
|
|
|
static gboolean
|
|
gdk_dnd_handle_motion_event (GdkDrag *drag,
|
|
GdkEvent *event)
|
|
{
|
|
GdkModifierType state;
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
DWORD key_state;
|
|
double x, y;
|
|
double x_root, y_root;
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_dnd_handle_motion_event: 0x%p\n", drag));
|
|
|
|
state = gdk_event_get_modifier_state (event);
|
|
gdk_event_get_position (event, &x, &y);
|
|
|
|
x_root = x + _gdk_offset_x;
|
|
y_root = y + _gdk_offset_y;
|
|
|
|
if (drag_win32->drag_surface)
|
|
move_drag_surface (drag, x_root, y_root);
|
|
|
|
key_state = manufacture_keystate_from_GMT (state);
|
|
|
|
if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
|
|
{
|
|
gdk_local_drag_update (drag, x_root, y_root, key_state,
|
|
gdk_event_get_time (event));
|
|
}
|
|
else if (drag_win32->protocol == GDK_DRAG_PROTO_OLE2)
|
|
{
|
|
GdkWin32Clipdrop *clipdrop = _gdk_win32_clipdrop_get ();
|
|
|
|
GDK_NOTE (DND, g_print ("Post WM_MOUSEMOVE keystate=%lu\n", key_state));
|
|
|
|
drag_win32->util_data.last_x = x_root;
|
|
drag_win32->util_data.last_y = y_root;
|
|
|
|
API_CALL (PostThreadMessage, (clipdrop->dnd_thread_id,
|
|
WM_MOUSEMOVE,
|
|
key_state,
|
|
MAKELPARAM (x * drag_win32->scale,
|
|
y * drag_win32->scale)));
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gdk_dnd_handle_key_event (GdkDrag *drag,
|
|
GdkEvent *event)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
GdkModifierType state;
|
|
GdkDevice *pointer;
|
|
gint dx, dy;
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_dnd_handle_key_event: 0x%p\n", drag));
|
|
|
|
state = gdk_event_get_modifier_state (event);
|
|
|
|
dx = dy = 0;
|
|
pointer = gdk_device_get_associated_device (gdk_event_get_device (event));
|
|
|
|
if (gdk_event_get_event_type (event) == GDK_KEY_PRESS)
|
|
{
|
|
switch (gdk_key_event_get_keyval (event))
|
|
{
|
|
case GDK_KEY_Escape:
|
|
gdk_drag_cancel (drag, GDK_DRAG_CANCEL_USER_CANCELLED);
|
|
return TRUE;
|
|
|
|
case GDK_KEY_space:
|
|
case GDK_KEY_Return:
|
|
case GDK_KEY_ISO_Enter:
|
|
case GDK_KEY_KP_Enter:
|
|
case GDK_KEY_KP_Space:
|
|
if ((gdk_drag_get_selected_action (drag) != 0) &&
|
|
(drag_win32->dest_window != INVALID_HANDLE_VALUE))
|
|
{
|
|
g_signal_emit_by_name (drag, "drop-performed");
|
|
}
|
|
else
|
|
gdk_drag_cancel (drag, GDK_DRAG_CANCEL_NO_TARGET);
|
|
|
|
return TRUE;
|
|
|
|
case GDK_KEY_Up:
|
|
case GDK_KEY_KP_Up:
|
|
dy = (state & GDK_ALT_MASK) ? -BIG_STEP : -SMALL_STEP;
|
|
break;
|
|
|
|
case GDK_KEY_Down:
|
|
case GDK_KEY_KP_Down:
|
|
dy = (state & GDK_ALT_MASK) ? BIG_STEP : SMALL_STEP;
|
|
break;
|
|
|
|
case GDK_KEY_Left:
|
|
case GDK_KEY_KP_Left:
|
|
dx = (state & GDK_ALT_MASK) ? -BIG_STEP : -SMALL_STEP;
|
|
break;
|
|
|
|
case GDK_KEY_Right:
|
|
case GDK_KEY_KP_Right:
|
|
dx = (state & GDK_ALT_MASK) ? BIG_STEP : SMALL_STEP;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* The state is not yet updated in the event, so we need
|
|
* to query it here.
|
|
*/
|
|
_gdk_device_query_state (pointer, NULL, NULL, NULL, NULL, &state);
|
|
|
|
if (dx != 0 || dy != 0)
|
|
{
|
|
drag_win32->util_data.last_x += dx;
|
|
drag_win32->util_data.last_y += dy;
|
|
}
|
|
|
|
if (drag_win32->drag_surface)
|
|
move_drag_surface (drag, drag_win32->util_data.last_x, drag_win32->util_data.last_y);
|
|
|
|
if (drag_win32->protocol == GDK_DRAG_PROTO_LOCAL)
|
|
gdk_local_drag_update (drag, drag_win32->util_data.last_x, drag_win32->util_data.last_y,
|
|
manufacture_keystate_from_GMT (state),
|
|
gdk_event_get_time (event));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gdk_dnd_handle_grab_broken_event (GdkDrag *drag,
|
|
GdkEvent *event)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_dnd_handle_grab_broken_event: 0x%p\n", drag));
|
|
|
|
/* Don't cancel if we break the implicit grab from the initial button_press.
|
|
* Also, don't cancel if we re-grab on the widget or on our grab window, for
|
|
* example, when changing the drag cursor.
|
|
*/
|
|
if (/* FIXME: event->implicit || */
|
|
gdk_grab_broken_event_get_grab_surface (event) == drag_win32->drag_surface ||
|
|
gdk_grab_broken_event_get_grab_surface (event) == drag_win32->grab_surface)
|
|
return FALSE;
|
|
|
|
if (gdk_event_get_device (event) != gdk_drag_get_device (drag))
|
|
return FALSE;
|
|
|
|
gdk_drag_cancel (drag, GDK_DRAG_CANCEL_ERROR);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gdk_dnd_handle_button_event (GdkDrag *drag,
|
|
GdkEvent *event)
|
|
{
|
|
GDK_NOTE (DND, g_print ("gdk_dnd_handle_button_event: 0x%p\n", drag));
|
|
|
|
#if 0
|
|
/* FIXME: Check the button matches */
|
|
if (event->button != drag_win32->button)
|
|
return FALSE;
|
|
#endif
|
|
|
|
if ((gdk_drag_get_selected_action (drag) != 0))
|
|
{
|
|
g_signal_emit_by_name (drag, "drop-performed");
|
|
}
|
|
else
|
|
gdk_drag_cancel (drag, GDK_DRAG_CANCEL_NO_TARGET);
|
|
|
|
/* Make sure GTK gets mouse release button event */
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
gdk_win32_drag_handle_event (GdkDrag *drag,
|
|
GdkEvent *event)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
if (!drag_win32->grab_seat)
|
|
return FALSE;
|
|
if (!drag_win32->handle_events)
|
|
{
|
|
/* FIXME: remove this functionality once gtk no longer calls DnD after drag_done() */
|
|
g_warning ("Got an event %d for drag context %p, even though it's done!",
|
|
event->event_type, drag);
|
|
return FALSE;
|
|
}
|
|
|
|
switch (gdk_event_get_event_type (event))
|
|
{
|
|
case GDK_MOTION_NOTIFY:
|
|
return gdk_dnd_handle_motion_event (drag, event);
|
|
case GDK_BUTTON_RELEASE:
|
|
return gdk_dnd_handle_button_event (drag, event);
|
|
case GDK_KEY_PRESS:
|
|
case GDK_KEY_RELEASE:
|
|
return gdk_dnd_handle_key_event (drag, event);
|
|
case GDK_GRAB_BROKEN:
|
|
return gdk_dnd_handle_grab_broken_event (drag, event);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static GdkSurface *
|
|
gdk_win32_drag_get_drag_surface (GdkDrag *drag)
|
|
{
|
|
return GDK_WIN32_DRAG (drag)->drag_surface;
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_set_hotspot (GdkDrag *drag,
|
|
gint hot_x,
|
|
gint hot_y)
|
|
{
|
|
GdkWin32Drag *drag_win32 = GDK_WIN32_DRAG (drag);
|
|
|
|
GDK_NOTE (DND, g_print ("gdk_drag_set_hotspot: 0x%p %d:%d\n",
|
|
drag,
|
|
hot_x, hot_y));
|
|
|
|
drag_win32->hot_x = hot_x;
|
|
drag_win32->hot_y = hot_y;
|
|
|
|
if (drag_win32->grab_seat)
|
|
{
|
|
/* DnD is managed, update current position */
|
|
move_drag_surface (drag, drag_win32->util_data.last_x, drag_win32->util_data.last_y);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_win32_drag_class_init (GdkWin32DragClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GdkDragClass *drag_class = GDK_DRAG_CLASS (klass);
|
|
|
|
object_class->finalize = gdk_win32_drag_finalize;
|
|
|
|
drag_class->get_drag_surface = gdk_win32_drag_get_drag_surface;
|
|
drag_class->set_hotspot = gdk_win32_drag_set_hotspot;
|
|
drag_class->drop_done = gdk_win32_drag_drop_done;
|
|
drag_class->set_cursor = gdk_win32_drag_set_cursor;
|
|
drag_class->cancel = gdk_win32_drag_cancel;
|
|
drag_class->drop_performed = gdk_win32_drag_drop_performed;
|
|
drag_class->handle_event = gdk_win32_drag_handle_event;
|
|
}
|