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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <dndevdis.hxx>
21 : #include <dndlcon.hxx>
22 : #include <window.h>
23 : #include <svdata.hxx>
24 :
25 : #include <osl/mutex.hxx>
26 : #include <vcl/svapp.hxx>
27 : #include <vcl/settings.hxx>
28 :
29 : using namespace ::cppu;
30 : using namespace ::com::sun::star::uno;
31 : using namespace ::com::sun::star::lang;
32 : using namespace ::com::sun::star::datatransfer;
33 : using namespace ::com::sun::star::datatransfer::dnd;
34 :
35 : // DNDEventDispatcher::DNDEventDispatcher
36 :
37 0 : DNDEventDispatcher::DNDEventDispatcher( Window * pTopWindow ):
38 : m_pTopWindow( pTopWindow ),
39 0 : m_pCurrentWindow( NULL )
40 : {
41 0 : }
42 :
43 : // DNDEventDispatcher::~DNDEventDispatcher
44 :
45 0 : DNDEventDispatcher::~DNDEventDispatcher()
46 : {
47 0 : }
48 :
49 0 : Window* DNDEventDispatcher::findTopLevelWindow(Point location)
50 : {
51 0 : SolarMutexGuard aSolarGuard;
52 :
53 : // find the window that is toplevel for this coordinates
54 : // because those coordinates come from outside, they must be mirrored if RTL layout is active
55 0 : if( Application::GetSettings().GetLayoutRTL() )
56 0 : m_pTopWindow->ImplMirrorFramePos( location );
57 0 : Window * pChildWindow = m_pTopWindow->ImplFindWindow( location );
58 :
59 0 : if( NULL == pChildWindow )
60 0 : pChildWindow = m_pTopWindow;
61 :
62 0 : while( pChildWindow->ImplGetClientWindow() )
63 0 : pChildWindow = pChildWindow->ImplGetClientWindow();
64 :
65 0 : if( pChildWindow->ImplIsAntiparallel() )
66 : {
67 0 : const OutputDevice *pChildWinOutDev = pChildWindow->GetOutDev();
68 0 : pChildWinOutDev->ReMirror( location );
69 : }
70 :
71 0 : return pChildWindow;
72 : }
73 :
74 : // DNDEventDispatcher::drop
75 :
76 0 : void SAL_CALL DNDEventDispatcher::drop( const DropTargetDropEvent& dtde )
77 : throw(RuntimeException, std::exception)
78 : {
79 0 : osl::MutexGuard aImplGuard( m_aMutex );
80 :
81 0 : Point location( dtde.LocationX, dtde.LocationY );
82 :
83 0 : Window* pChildWindow = findTopLevelWindow(location);
84 :
85 : // handle the case that drop is in an other vcl window than the last dragOver
86 0 : if( pChildWindow != m_pCurrentWindow )
87 : {
88 : // fire dragExit on listeners of previous window
89 0 : fireDragExitEvent( m_pCurrentWindow );
90 :
91 : fireDragEnterEvent( pChildWindow, static_cast < XDropTargetDragContext * > (this),
92 0 : dtde.DropAction, location, dtde.SourceActions, m_aDataFlavorList );
93 : }
94 :
95 0 : sal_Int32 nListeners = 0;
96 :
97 : // send drop event to the child window
98 : nListeners = fireDropEvent( pChildWindow, dtde.Context, dtde.DropAction,
99 0 : location, dtde.SourceActions, dtde.Transferable );
100 :
101 : // reject drop if no listeners found
102 0 : if( nListeners == 0 ) {
103 : OSL_TRACE( "rejecting drop due to missing listeners." );
104 0 : dtde.Context->rejectDrop();
105 : }
106 :
107 : // this is a drop -> no further drag overs
108 0 : m_pCurrentWindow = NULL;
109 0 : m_aDataFlavorList.realloc( 0 );
110 0 : }
111 :
112 : // DNDEventDispatcher::dragEnter
113 :
114 0 : void SAL_CALL DNDEventDispatcher::dragEnter( const DropTargetDragEnterEvent& dtdee )
115 : throw(RuntimeException, std::exception)
116 : {
117 0 : osl::MutexGuard aImplGuard( m_aMutex );
118 0 : Point location( dtdee.LocationX, dtdee.LocationY );
119 :
120 0 : Window * pChildWindow = findTopLevelWindow(location);
121 :
122 : // assume pointer write operation to be atomic
123 0 : m_pCurrentWindow = pChildWindow;
124 0 : m_aDataFlavorList = dtdee.SupportedDataFlavors;
125 :
126 : // fire dragEnter on listeners of current window
127 : sal_Int32 nListeners = fireDragEnterEvent( pChildWindow, dtdee.Context, dtdee.DropAction, location,
128 0 : dtdee.SourceActions, dtdee.SupportedDataFlavors );
129 :
130 : // reject drag if no listener found
131 0 : if( nListeners == 0 ) {
132 : OSL_TRACE( "rejecting drag enter due to missing listeners." );
133 0 : dtdee.Context->rejectDrag();
134 0 : }
135 :
136 0 : }
137 :
138 : // DNDEventDispatcher::dragExit
139 :
140 0 : void SAL_CALL DNDEventDispatcher::dragExit( const DropTargetEvent& /*dte*/ )
141 : throw(RuntimeException, std::exception)
142 : {
143 0 : osl::MutexGuard aImplGuard( m_aMutex );
144 :
145 0 : fireDragExitEvent( m_pCurrentWindow );
146 :
147 : // reset member values
148 0 : m_pCurrentWindow = NULL;
149 0 : m_aDataFlavorList.realloc( 0 );
150 0 : }
151 :
152 : // DNDEventDispatcher::dragOver
153 :
154 0 : void SAL_CALL DNDEventDispatcher::dragOver( const DropTargetDragEvent& dtde )
155 : throw(RuntimeException, std::exception)
156 : {
157 0 : osl::MutexGuard aImplGuard( m_aMutex );
158 :
159 0 : Point location( dtde.LocationX, dtde.LocationY );
160 : sal_Int32 nListeners;
161 :
162 0 : Window * pChildWindow = findTopLevelWindow(location);
163 :
164 0 : if( pChildWindow != m_pCurrentWindow )
165 : {
166 : // fire dragExit on listeners of previous window
167 0 : fireDragExitEvent( m_pCurrentWindow );
168 :
169 : // remember new window
170 0 : m_pCurrentWindow = pChildWindow;
171 :
172 : // fire dragEnter on listeners of current window
173 : nListeners = fireDragEnterEvent( pChildWindow, dtde.Context, dtde.DropAction, location,
174 0 : dtde.SourceActions, m_aDataFlavorList );
175 : }
176 : else
177 : {
178 : // fire dragOver on listeners of current window
179 : nListeners = fireDragOverEvent( pChildWindow, dtde.Context, dtde.DropAction, location,
180 0 : dtde.SourceActions );
181 : }
182 :
183 : // reject drag if no listener found
184 0 : if( nListeners == 0 )
185 : {
186 : OSL_TRACE( "rejecting drag over due to missing listeners." );
187 0 : dtde.Context->rejectDrag();
188 0 : }
189 0 : }
190 :
191 : // DNDEventDispatcher::dropActionChanged
192 :
193 0 : void SAL_CALL DNDEventDispatcher::dropActionChanged( const DropTargetDragEvent& dtde )
194 : throw(RuntimeException, std::exception)
195 : {
196 0 : osl::MutexGuard aImplGuard( m_aMutex );
197 :
198 0 : Point location( dtde.LocationX, dtde.LocationY );
199 : sal_Int32 nListeners;
200 :
201 0 : Window* pChildWindow = findTopLevelWindow(location);
202 :
203 0 : if( pChildWindow != m_pCurrentWindow )
204 : {
205 : // fire dragExit on listeners of previous window
206 0 : fireDragExitEvent( m_pCurrentWindow );
207 :
208 : // remember new window
209 0 : m_pCurrentWindow = pChildWindow;
210 :
211 : // fire dragEnter on listeners of current window
212 : nListeners = fireDragEnterEvent( pChildWindow, dtde.Context, dtde.DropAction, location,
213 0 : dtde.SourceActions, m_aDataFlavorList );
214 : }
215 : else
216 : {
217 : // fire dropActionChanged on listeners of current window
218 : nListeners = fireDropActionChangedEvent( pChildWindow, dtde.Context, dtde.DropAction, location,
219 0 : dtde.SourceActions );
220 : }
221 :
222 : // reject drag if no listener found
223 0 : if( nListeners == 0 )
224 : {
225 : OSL_TRACE( "rejecting dropActionChanged due to missing listeners." );
226 0 : dtde.Context->rejectDrag();
227 0 : }
228 0 : }
229 :
230 : // DNDEventDispatcher::dragGestureRecognized
231 :
232 0 : void SAL_CALL DNDEventDispatcher::dragGestureRecognized( const DragGestureEvent& dge )
233 : throw(RuntimeException, std::exception)
234 : {
235 0 : osl::MutexGuard aImplGuard( m_aMutex );
236 :
237 0 : Point origin( dge.DragOriginX, dge.DragOriginY );
238 :
239 0 : Window* pChildWindow = findTopLevelWindow(origin);
240 :
241 0 : fireDragGestureEvent( pChildWindow, dge.DragSource, dge.Event, origin, dge.DragAction );
242 0 : }
243 :
244 : // DNDEventDispatcher::disposing
245 :
246 0 : void SAL_CALL DNDEventDispatcher::disposing( const EventObject& )
247 : throw(RuntimeException, std::exception)
248 : {
249 0 : }
250 :
251 : // DNDEventDispatcher::acceptDrag
252 :
253 0 : void SAL_CALL DNDEventDispatcher::acceptDrag( sal_Int8 /*dropAction*/ ) throw(RuntimeException, std::exception)
254 : {
255 0 : }
256 :
257 : // DNDEventDispatcher::rejectDrag
258 :
259 0 : void SAL_CALL DNDEventDispatcher::rejectDrag() throw(RuntimeException, std::exception)
260 : {
261 0 : }
262 :
263 : // DNDEventDispatcher::fireDragEnterEvent
264 :
265 0 : sal_Int32 DNDEventDispatcher::fireDragEnterEvent( Window *pWindow,
266 : const Reference< XDropTargetDragContext >& xContext, const sal_Int8 nDropAction,
267 : const Point& rLocation, const sal_Int8 nSourceActions, const Sequence< DataFlavor >& aFlavorList
268 : )
269 : throw(RuntimeException)
270 : {
271 0 : sal_Int32 n = 0;
272 :
273 0 : if( pWindow && pWindow->IsInputEnabled() && ! pWindow->IsInModalMode() )
274 : {
275 0 : SolarMutexClearableGuard aSolarGuard;
276 :
277 : // set an UI lock
278 0 : pWindow->IncrementLockCount();
279 :
280 : // query DropTarget from window
281 0 : Reference< XDropTarget > xDropTarget = pWindow->GetDropTarget();
282 :
283 0 : if( xDropTarget.is() )
284 : {
285 : // retrieve relative mouse position
286 0 : Point relLoc = pWindow->ImplFrameToOutput( rLocation );
287 0 : aSolarGuard.clear();
288 :
289 0 : n = static_cast < DNDListenerContainer * > ( xDropTarget.get() )->fireDragEnterEvent(
290 0 : xContext, nDropAction, relLoc.X(), relLoc.Y(), nSourceActions, aFlavorList );
291 0 : }
292 : }
293 :
294 0 : return n;
295 : }
296 :
297 : // DNDEventDispatcher::fireDragOverEvent
298 :
299 0 : sal_Int32 DNDEventDispatcher::fireDragOverEvent( Window *pWindow,
300 : const Reference< XDropTargetDragContext >& xContext, const sal_Int8 nDropAction,
301 : const Point& rLocation, const sal_Int8 nSourceActions
302 : )
303 : throw(RuntimeException)
304 : {
305 0 : sal_Int32 n = 0;
306 :
307 0 : if( pWindow && pWindow->IsInputEnabled() && ! pWindow->IsInModalMode() )
308 : {
309 0 : SolarMutexClearableGuard aSolarGuard;
310 :
311 : // query DropTarget from window
312 0 : Reference< XDropTarget > xDropTarget = pWindow->GetDropTarget();
313 :
314 0 : if( xDropTarget.is() )
315 : {
316 : // retrieve relative mouse position
317 0 : Point relLoc = pWindow->ImplFrameToOutput( rLocation );
318 0 : aSolarGuard.clear();
319 :
320 0 : n = static_cast < DNDListenerContainer * > ( xDropTarget.get() )->fireDragOverEvent(
321 0 : xContext, nDropAction, relLoc.X(), relLoc.Y(), nSourceActions );
322 0 : }
323 : }
324 :
325 0 : return n;
326 : }
327 :
328 : // DNDEventDispatcher::fireDragExitEvent
329 :
330 0 : sal_Int32 DNDEventDispatcher::fireDragExitEvent( Window *pWindow ) throw(RuntimeException)
331 : {
332 0 : sal_Int32 n = 0;
333 :
334 0 : if( pWindow && pWindow->IsInputEnabled() && ! pWindow->IsInModalMode() )
335 : {
336 0 : SolarMutexClearableGuard aGuard;
337 :
338 : // query DropTarget from window
339 0 : Reference< XDropTarget > xDropTarget = pWindow->GetDropTarget();
340 :
341 0 : aGuard.clear();
342 :
343 0 : if( xDropTarget.is() )
344 0 : n = static_cast < DNDListenerContainer * > ( xDropTarget.get() )->fireDragExitEvent();
345 :
346 : // release UI lock
347 0 : pWindow->DecrementLockCount();
348 : }
349 :
350 0 : return n;
351 : }
352 :
353 : // DNDEventDispatcher::fireDropActionChangedEvent
354 :
355 0 : sal_Int32 DNDEventDispatcher::fireDropActionChangedEvent( Window *pWindow,
356 : const Reference< XDropTargetDragContext >& xContext, const sal_Int8 nDropAction,
357 : const Point& rLocation, const sal_Int8 nSourceActions
358 : )
359 : throw(RuntimeException)
360 : {
361 0 : sal_Int32 n = 0;
362 :
363 0 : if( pWindow && pWindow->IsInputEnabled() && ! pWindow->IsInModalMode() )
364 : {
365 0 : SolarMutexClearableGuard aGuard;
366 :
367 : // query DropTarget from window
368 0 : Reference< XDropTarget > xDropTarget = pWindow->GetDropTarget();
369 :
370 0 : if( xDropTarget.is() )
371 : {
372 : // retrieve relative mouse position
373 0 : Point relLoc = pWindow->ImplFrameToOutput( rLocation );
374 0 : aGuard.clear();
375 :
376 0 : n = static_cast < DNDListenerContainer * > ( xDropTarget.get() )->fireDropActionChangedEvent(
377 0 : xContext, nDropAction, relLoc.X(), relLoc.Y(), nSourceActions );
378 0 : }
379 : }
380 :
381 0 : return n;
382 : }
383 :
384 : // DNDEventDispatcher::fireDropEvent
385 :
386 0 : sal_Int32 DNDEventDispatcher::fireDropEvent( Window *pWindow,
387 : const Reference< XDropTargetDropContext >& xContext, const sal_Int8 nDropAction, const Point& rLocation,
388 : const sal_Int8 nSourceActions, const Reference< XTransferable >& xTransferable
389 : )
390 : throw(RuntimeException)
391 : {
392 0 : sal_Int32 n = 0;
393 :
394 0 : if( pWindow && pWindow->IsInputEnabled() && ! pWindow->IsInModalMode() )
395 : {
396 0 : SolarMutexClearableGuard aGuard;
397 :
398 : // query DropTarget from window
399 0 : Reference< XDropTarget > xDropTarget = pWindow->GetDropTarget();
400 :
401 : // window may be destroyed in drop event handler
402 0 : ImplDelData aDelData;
403 0 : pWindow->ImplAddDel( &aDelData );
404 :
405 0 : if( xDropTarget.is() )
406 : {
407 : // retrieve relative mouse position
408 0 : Point relLoc = pWindow->ImplFrameToOutput( rLocation );
409 0 : aGuard.clear();
410 :
411 0 : n = static_cast < DNDListenerContainer * > ( xDropTarget.get() )->fireDropEvent(
412 0 : xContext, nDropAction, relLoc.X(), relLoc.Y(), nSourceActions, xTransferable );
413 : }
414 :
415 0 : if ( !aDelData.IsDead() )
416 : {
417 0 : pWindow->ImplRemoveDel( &aDelData );
418 : // release UI lock
419 0 : pWindow->DecrementLockCount();
420 0 : }
421 :
422 : }
423 :
424 0 : return n;
425 : }
426 :
427 : // DNDEventDispatcher::fireDragGestureRecognized
428 :
429 0 : sal_Int32 DNDEventDispatcher::fireDragGestureEvent( Window *pWindow,
430 : const Reference< XDragSource >& xSource, const Any event,
431 : const Point& rOrigin, const sal_Int8 nDragAction
432 : )
433 : throw(::com::sun::star::uno::RuntimeException)
434 : {
435 0 : sal_Int32 n = 0;
436 :
437 0 : if( pWindow && pWindow->IsInputEnabled() && ! pWindow->IsInModalMode() )
438 : {
439 0 : SolarMutexClearableGuard aGuard;
440 :
441 : // query DropTarget from window
442 0 : Reference< XDragGestureRecognizer > xDragGestureRecognizer = pWindow->GetDragGestureRecognizer();
443 :
444 0 : if( xDragGestureRecognizer.is() )
445 : {
446 : // retrieve relative mouse position
447 0 : Point relLoc = pWindow->ImplFrameToOutput( rOrigin );
448 0 : aGuard.clear();
449 :
450 0 : n = static_cast < DNDListenerContainer * > ( xDragGestureRecognizer.get() )->fireDragGestureEvent(
451 0 : nDragAction, relLoc.X(), relLoc.Y(), xSource, event );
452 : }
453 :
454 : // release UI lock
455 0 : pWindow->DecrementLockCount();
456 : }
457 :
458 0 : return n;
459 : }
460 :
461 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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