1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #pragma push_macro("bad_alloc")
27 //"bad_alloc" would be introduced in STL as "std::zbad_alloc" and discarded by linker
28 //by this action we avoid the conflict with AWT implementation of "bad_alloc"
29 //we need <new> inclusion for STL "new" oprators set.
30 #define bad_alloc zbad_alloc
31 #include <new>
32
33 #if defined(_DEBUG) || defined(DEBUG)
34 extern void * operator new(size_t size, const char * filename, int linenumber);
35 void * operator new(size_t size) {return operator new(size, "stl", 1);}
36 #endif
37 #include <map>
38
39 #pragma pop_macro("bad_alloc")
40 //"bad_alloc" is undefined from here
41
42 #include <awt.h>
43 #include <shlobj.h>
44
45 #include "jlong.h"
46 #include "awt_DataTransferer.h"
47 #include "awt_DnDDS.h"
48 #include "awt_DnDDT.h"
49 #include "awt_Cursor.h"
50 #include "awt_Toolkit.h"
51 #include "awt_Component.h"
52
53 #include "java_awt_event_InputEvent.h"
54 #include "java_awt_dnd_DnDConstants.h"
55 #include "sun_awt_windows_WDragSourceContextPeer.h"
56
57 #include "awt_ole.h"
58 #include "awt_DCHolder.h"
59
60 bool operator < (const FORMATETC &fr, const FORMATETC &fl) {
61 return memcmp(&fr, &fl, sizeof(FORMATETC)) < 0;
62 }
63
64 typedef std::map<FORMATETC, STGMEDIUM> CDataMap;
65
66 #define GALLOCFLG (GMEM_DDESHARE | GMEM_MOVEABLE | GMEM_ZEROINIT)
67 #define JAVA_BUTTON_MASK (java_awt_event_InputEvent_BUTTON1_DOWN_MASK | \
68 java_awt_event_InputEvent_BUTTON2_DOWN_MASK | \
69 java_awt_event_InputEvent_BUTTON3_DOWN_MASK)
70
71 extern "C" {
72 DWORD __cdecl convertActionsToDROPEFFECT(jint actions);
73 jint __cdecl convertDROPEFFECTToActions(DWORD effects);
74 }
75
76 class PictureDragHelper
77 {
78 private:
79 static CDataMap st;
80 static IDragSourceHelper *pHelper;
81 public:
82 static HRESULT Create(
83 JNIEnv* env,
84 jintArray imageData,
85 int imageWidth,
86 int imageHeight,
87 int anchorX,
88 int anchorY,
89 IDataObject *pIDataObject)
90 {
91 if (NULL == imageData) {
92 return S_FALSE;
93 }
94 OLE_TRY
95 OLE_HRT( CoCreateInstance(
96 CLSID_DragDropHelper,
97 NULL,
98 CLSCTX_ALL,
99 IID_IDragSourceHelper,
100 (LPVOID*)&pHelper))
101
102 jintArray ia = imageData;
103 jsize iPointCoint = env->GetArrayLength(ia);
104
105 DCHolder ph;
106 ph.Create(NULL, imageWidth, imageHeight, TRUE);
107 env->GetIntArrayRegion(ia, 0, iPointCoint, (jint*)ph.m_pPoints);
108
109 SHDRAGIMAGE sdi;
110 sdi.sizeDragImage.cx = imageWidth;
111 sdi.sizeDragImage.cy = imageHeight;
112 sdi.ptOffset.x = anchorX;
113 sdi.ptOffset.y = anchorY;
114 sdi.crColorKey = 0xFFFFFFFF;
115 sdi.hbmpDragImage = ph;
116
117 // this call assures that the bitmap will be dragged around
118 OLE_HR = pHelper->InitializeFromBitmap(
119 &sdi,
120 pIDataObject
121 );
122 // in case of an error we need to destroy the image, else the helper object takes ownership
123 if (FAILED(OLE_HR)) {
124 DeleteObject(sdi.hbmpDragImage);
125 }
126 OLE_CATCH
127 OLE_RETURN_HR
128 }
129
130 static void Destroy()
131 {
132 if (NULL!=pHelper) {
133 CleanFormatMap();
134 pHelper->Release();
135 pHelper = NULL;
136 }
137 }
138
139 static void CleanFormatMap()
140 {
141 for (CDataMap::iterator i = st.begin(); st.end() != i; i = st.erase(i)) {
142 ::ReleaseStgMedium(&i->second);
143 }
144 }
145 static void SetData(const FORMATETC &format, const STGMEDIUM &medium)
146 {
147 CDataMap::iterator i = st.find(format);
148 if (st.end() != i) {
149 ::ReleaseStgMedium(&i->second);
150 i->second = medium;
151 } else {
152 st[format] = medium;
153 }
154 }
155 static const FORMATETC *FindFormat(const FORMATETC &format)
156 {
157 static FORMATETC fm = {0};
158 CDataMap::iterator i = st.find(format);
159 if (st.end() != i) {
160 return &i->first;
161 }
162 for (i = st.begin(); st.end() != i; ++i) {
163 if (i->first.cfFormat==format.cfFormat) {
164 return &i->first;
165 }
166 }
167 return NULL;
168 }
169 static STGMEDIUM *FindData(const FORMATETC &format)
170 {
171 CDataMap::iterator i = st.find(format);
172 if (st.end() != i) {
173 return &i->second;
174 }
175 for (i = st.begin(); st.end() != i; ++i) {
176 const FORMATETC &f = i->first;
177 if (f.cfFormat==format.cfFormat && (f.tymed == (f.tymed & format.tymed))) {
178 return &i->second;
179 }
180 }
181 return NULL;
182 }
183 };
184
185
186 CDataMap PictureDragHelper::st;
187 IDragSourceHelper *PictureDragHelper::pHelper = NULL;
188
189 extern const CLIPFORMAT CF_PERFORMEDDROPEFFECT = ::RegisterClipboardFormat(CFSTR_PERFORMEDDROPEFFECT);
190 extern const CLIPFORMAT CF_FILEGROUPDESCRIPTORW = ::RegisterClipboardFormat(CFSTR_FILEDESCRIPTORW);
191 extern const CLIPFORMAT CF_FILEGROUPDESCRIPTORA = ::RegisterClipboardFormat(CFSTR_FILEDESCRIPTORA);
192 extern const CLIPFORMAT CF_FILECONTENTS = ::RegisterClipboardFormat(CFSTR_FILECONTENTS);
193
194 typedef struct {
195 AwtDragSource* dragSource;
196 jobject cursor;
197 jintArray imageData;
198 jint imageWidth;
199 jint imageHeight;
200 jint x;
201 jint y;
202 } StartDragRec;
203
204 /**
205 * StartDrag
206 */
207
208 void AwtDragSource::StartDrag(
209 AwtDragSource* self,
210 jobject cursor,
211 jintArray imageData,
212 jint imageWidth,
213 jint imageHeight,
214 jint x,
215 jint y)
216 {
217 StartDragRec* sdrp = new StartDragRec;
218 sdrp->dragSource = self;
219 sdrp->imageData = imageData;
220 sdrp->cursor = cursor;
221 sdrp->imageWidth = imageWidth;
222 sdrp->imageHeight = imageHeight;
223 sdrp->x = x;
224 sdrp->y = y;
225
226 AwtToolkit::GetInstance().WaitForSingleObject(self->m_mutex);
227
228 AwtToolkit::GetInstance().InvokeFunctionLater((void (*)(void *))&AwtDragSource::_DoDragDrop, (void *)sdrp);
229
230 self->WaitUntilSignalled(FALSE);
231 }
232
233 /**
234 * DoDragDrop - called from message pump thread
235 */
236
237 void AwtDragSource::_DoDragDrop(void* param) {
238 StartDragRec* sdrp = (StartDragRec*)param;
239 AwtDragSource* dragSource = sdrp->dragSource;
240 DWORD effects = DROPEFFECT_NONE;
241 JNIEnv* env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
242 jobject peer = env->NewLocalRef(dragSource->GetPeer());
243
244 if (sdrp->imageData) {
245 PictureDragHelper::Create(
246 env,
247 sdrp->imageData,
248 sdrp->imageWidth,
249 sdrp->imageHeight,
250 sdrp->x,
251 sdrp->y,
252 (IDataObject*)dragSource);
253 env->DeleteGlobalRef(sdrp->imageData);
254 }
255 dragSource->SetCursor(sdrp->cursor);
256 env->DeleteGlobalRef(sdrp->cursor);
257 delete sdrp;
258
259 HRESULT res;
260
261 // StartDrag has caused dragSource->m_mutex to be held by our thread now
262
263 AwtDropTarget::SetCurrentDnDDataObject(dragSource);
264
265 ::GetCursorPos(&dragSource->m_dragPoint);
266
267 dragSource->Signal();
268
269 AwtToolkit &toolkit = AwtToolkit::GetInstance();
270 toolkit.isInDoDragDropLoop = TRUE;
271 res = ::DoDragDrop(dragSource,
272 dragSource,
273 convertActionsToDROPEFFECT(dragSource->m_actions),
274 &effects
275 );
276 toolkit.isInDoDragDropLoop = FALSE;
277
278 if (effects == DROPEFFECT_NONE && dragSource->m_dwPerformedDropEffect != DROPEFFECT_NONE) {
279 effects = dragSource->m_dwPerformedDropEffect;
280 }
281 dragSource->m_dwPerformedDropEffect = DROPEFFECT_NONE;
282
283 call_dSCddfinished(env, peer, res == DRAGDROP_S_DROP && effects != DROPEFFECT_NONE,
284 convertDROPEFFECTToActions(effects),
285 dragSource->m_dragPoint.x, dragSource->m_dragPoint.y);
286
287 env->DeleteLocalRef(peer);
288
289 DASSERT(AwtDropTarget::IsCurrentDnDDataObject(dragSource));
290 AwtDropTarget::SetCurrentDnDDataObject(NULL);
291
292 PictureDragHelper::Destroy();
293 dragSource->Release();
294 }
295
296 /**
297 * constructor
298 */
299
300 AwtDragSource::AwtDragSource(JNIEnv* env, jobject peer, jobject component,
301 jobject transferable, jobject trigger,
302 jint actions, jlongArray formats,
303 jobject formatMap) {
304 m_peer = env->NewGlobalRef(peer);
305
306 m_refs = 1;
307
308 m_actions = actions;
309
310 m_ntypes = 0;
311
312 m_initmods = 0;
313 m_lastmods = 0;
314
315 m_droptarget = NULL;
316 m_enterpending = TRUE;
317
318 m_cursor = NULL;
319
320 m_mutex = ::CreateMutex(NULL, FALSE, NULL);
321
322 m_component = env->NewGlobalRef(component);
323 m_transferable = env->NewGlobalRef(transferable);
324 m_formatMap = env->NewGlobalRef(formatMap);
325
326 m_dragPoint.x = 0;
327 m_dragPoint.y = 0;
328
329 m_fNC = TRUE;
330 m_dropPoint.x = 0;
331 m_dropPoint.y = 0;
332
333 m_dwPerformedDropEffect = DROPEFFECT_NONE;
334 m_bRestoreNodropCustomCursor = FALSE;
335
336 LoadCache(formats);
337 }
338
339 /**
340 * destructor
341 */
342
343 AwtDragSource::~AwtDragSource() {
344 JNIEnv* env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
345
346 // fix for 6212440: on application shutdown, this object's
347 // destruction might be suppressed due to dangling COM references.
348 // On destruction, VM might be shut down already, so we should make
349 // a null check on env.
350 if (env) {
351 env->DeleteGlobalRef(m_peer);
352 env->DeleteGlobalRef(m_component);
353 env->DeleteGlobalRef(m_transferable);
354 env->DeleteGlobalRef(m_formatMap);
355 }
356
357 ::CloseHandle(m_mutex);
358
359 UnloadCache();
360 }
361
362 /**
363 * _compar
364 *
365 * compare format's then tymed's .... only one tymed bit may be set
366 * at any time in a FORMATETC in the cache.
367 */
368
369 int AwtDragSource::_compar(const void* first, const void* second) {
370 FORMATETC *fp = (FORMATETC *)first;
371 FORMATETC *sp = (FORMATETC *)second;
372 int r = fp->cfFormat - sp->cfFormat;
373
374 return r != 0 ? r : fp->tymed - sp->tymed;
375 }
376
377 /**
378 * LoadCache
379 */
380
381 void AwtDragSource::LoadCache(jlongArray formats) {
382 JNIEnv* env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
383 unsigned int items = 0;
384 unsigned int i = 0;
385 unsigned int idx = 0;
386
387 if (m_types != (FORMATETC *)NULL) {
388 UnloadCache();
389 }
390
391 items = env->GetArrayLength(formats);
392
393 if (items == 0) {
394 return;
395 }
396
397 jlong *lFormats = env->GetLongArrayElements(formats, 0),
398 *saveFormats = lFormats;
399 if (lFormats == NULL) {
400 m_ntypes = 0;
401 return;
402 }
403
404 for (i = 0, m_ntypes = 0; i < items; i++, lFormats++) {
405 // Warning C4244.
406 // Cast from jlong to CLIPFORMAT (WORD).
407 CLIPFORMAT fmt = (CLIPFORMAT)*lFormats;
408 switch (fmt) {
409 case CF_ENHMETAFILE:
410 m_ntypes++; // Only TYMED_ENHMF
411 break;
412 case CF_METAFILEPICT:
413 m_ntypes++; // Only TYMED_MFPICT
414 break;
415 case CF_HDROP:
416 m_ntypes++; // Only TYMED_HGLOBAL
417 break;
418 default:
419 m_ntypes += 2; // TYMED_HGLOBAL and TYMED_ISTREAM
420 break;
421 }
422 }
423
424 try {
425 m_types = (FORMATETC *)safe_Calloc(sizeof(FORMATETC), m_ntypes);
426 } catch (std::bad_alloc&) {
427 m_ntypes = 0;
428 env->ReleaseLongArrayElements(formats, saveFormats, 0);
429 throw;
430 }
431
432 lFormats = saveFormats;
433
434 for (i = 0, idx = 0; i < items; i++, lFormats++) {
435 // Warning C4244.
436 // Cast from jlong to CLIPFORMAT (WORD).
437 CLIPFORMAT fmt = (CLIPFORMAT)*lFormats;
438
439 m_types[idx].cfFormat = fmt;
440 m_types[idx].dwAspect = DVASPECT_CONTENT;
441 m_types[idx].lindex = -1;
442
443 switch (fmt) {
444 default:
445 m_types[idx].tymed = TYMED_ISTREAM;
446 idx++;
447
448 // now make a copy, but with a TYMED of HGLOBAL
449 m_types[idx] = m_types[idx-1];
450 m_types[idx].tymed = TYMED_HGLOBAL;
451 idx++;
452 break;
453 case CF_HDROP:
454 m_types[idx].tymed = TYMED_HGLOBAL;
455 idx++;
456 break;
457 case CF_ENHMETAFILE:
458 m_types[idx].tymed = TYMED_ENHMF;
459 idx++;
460 break;
461 case CF_METAFILEPICT:
462 m_types[idx].tymed = TYMED_MFPICT;
463 idx++;
464 break;
465 }
466 }
467 DASSERT(idx == m_ntypes);
468
469 env->ReleaseLongArrayElements(formats, saveFormats, 0);
470
471 // sort them in ascending order of format
472 qsort((void *)m_types, (size_t)m_ntypes, (size_t)sizeof(FORMATETC),
473 _compar);
474 }
475
476 /**
477 * UnloadCache
478 */
479
480 void AwtDragSource::UnloadCache() {
481 if (m_ntypes == 0) {
482 return;
483 }
484
485 free((void*)m_types);
486 m_ntypes = 0;
487 m_types = (FORMATETC *)NULL;
488 }
489
490 /**
491 * ChangeCursor
492 */
493 HRESULT AwtDragSource::ChangeCursor()
494 {
495 if (m_cursor != NULL) {
496 ::SetCursor(m_cursor->GetHCursor());
497 return S_OK;
498 }
499 return DRAGDROP_S_USEDEFAULTCURSORS;
500 }
501
502 /**
503 * SetCursor
504 */
505 void AwtDragSource::SetCursor(jobject cursor) {
506 JNIEnv* env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
507
508 if (JNU_IsNull(env, cursor)) {
509 m_cursor = NULL;
510 return;
511 }
512
513 jlong pData = env->GetLongField(cursor, AwtCursor::pDataID);
514 // Warning C4312.
515 // Cast jlong (__int64) to pointer.
516 m_cursor = (AwtCursor*)pData;
517
518 if (m_cursor == NULL) {
519 m_cursor = AwtCursor::CreateSystemCursor(cursor);
520 }
521 }
522
523 /**
524 * MatchFormatEtc
525 */
526
527 HRESULT __stdcall
528 AwtDragSource::MatchFormatEtc(FORMATETC __RPC_FAR *pFormatEtcIn,
529 FORMATETC *cacheEnt) {
530 TRY;
531
532 const FORMATETC *pFormat = PictureDragHelper::FindFormat(*pFormatEtcIn);
533 if (NULL != pFormat) {
534 if (NULL != cacheEnt) {
535 *cacheEnt = *pFormat;
536 }
537 return S_OK;
538 }
539
540 if ((pFormatEtcIn->tymed & (TYMED_HGLOBAL | TYMED_ISTREAM | TYMED_ENHMF |
541 TYMED_MFPICT)) == 0) {
542 return DV_E_TYMED;
543 } else if (pFormatEtcIn->lindex != -1) {
544 return DV_E_LINDEX;
545 } else if (pFormatEtcIn->dwAspect != DVASPECT_CONTENT) {
546 return DV_E_DVASPECT;
547 }
548
549 FORMATETC tmp = *pFormatEtcIn;
550
551 static const DWORD supportedTymeds[] =
552 { TYMED_ISTREAM, TYMED_HGLOBAL, TYMED_ENHMF, TYMED_MFPICT };
553 static const int nSupportedTymeds = 4;
554
555 for (int i = 0; i < nSupportedTymeds; i++) {
556 /*
557 * Fix for BugTraq Id 4426805.
558 * Match only if the tymed is supported by the requester.
559 */
560 if ((pFormatEtcIn->tymed & supportedTymeds[i]) == 0) {
561 continue;
562 }
563
564 tmp.tymed = supportedTymeds[i];
565 pFormat = (const FORMATETC *)bsearch((const void *)&tmp,
566 (const void *)m_types,
567 (size_t) m_ntypes,
568 (size_t) sizeof(FORMATETC),
569 _compar
570 );
571 if (NULL != pFormat) {
572 if (cacheEnt != (FORMATETC *)NULL) {
573 *cacheEnt = *pFormat;
574 }
575 return S_OK;
576 }
577 }
578
579 return DV_E_FORMATETC;
580
581 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
582 }
583
584 /**
585 * QueryInterface
586 */
587
588 HRESULT __stdcall AwtDragSource::QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject) {
589 TRY;
590
591 if (riid == IID_IUnknown) {
592 *ppvObject = (void __RPC_FAR *__RPC_FAR)(IUnknown*)(IDropSource*)this;
593 AddRef();
594 return S_OK;
595 } else if (riid == IID_IDropSource) {
596 *ppvObject = (void __RPC_FAR *__RPC_FAR)(IDropSource*)this;
597 AddRef();
598 return S_OK;
599 } else if (riid == IID_IDataObject) {
600 *ppvObject = (void __RPC_FAR *__RPC_FAR)(IDataObject*)this;
601 AddRef();
602 return S_OK;
603 } else {
604 *ppvObject = (void __RPC_FAR *__RPC_FAR)NULL;
605 return E_NOINTERFACE;
606 }
607
608 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
609 }
610
611 /**
612 * AddRef
613 */
614
615 ULONG __stdcall AwtDragSource::AddRef() {
616 return (ULONG)++m_refs;
617 }
618
619 /**
620 * Release
621 */
622
623 ULONG __stdcall AwtDragSource::Release() {
624 int refs;
625
626 if ((refs = --m_refs) == 0) delete this;
627
628 return (ULONG)refs;
629 }
630
631 /**
632 * QueryContinueDrag
633 */
634
635 HRESULT __stdcall AwtDragSource::QueryContinueDrag(BOOL fEscapeKeyPressed, DWORD grfKeyState) {
636 AwtToolkit::GetInstance().eventNumber++;
637 TRY;
638
639 JNIEnv* env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
640
641 if (fEscapeKeyPressed)
642 return DRAGDROP_S_CANCEL;
643
644 jint modifiers = AwtComponent::GetJavaModifiers();
645
646 POINT dragPoint;
647
648 ::GetCursorPos(&dragPoint);
649
650 if ( (dragPoint.x != m_dragPoint.x || dragPoint.y != m_dragPoint.y) &&
651 m_lastmods == modifiers) {//cannot move before cursor change
652 call_dSCmouseMoved(env, m_peer,
653 m_actions, modifiers, dragPoint.x, dragPoint.y);
654 JNU_CHECK_EXCEPTION_RETURN(env, E_UNEXPECTED);
655 m_dragPoint = dragPoint;
656 }
657
658 if ((modifiers & JAVA_BUTTON_MASK) == 0) {
659 return DRAGDROP_S_DROP;
660 } else if (m_initmods == 0) {
661 m_initmods = modifiers;
662 } else if ((modifiers & JAVA_BUTTON_MASK) != (m_initmods & JAVA_BUTTON_MASK)) {
663 return DRAGDROP_S_CANCEL;
664 } else if (m_lastmods != modifiers) {
665 call_dSCchanged(env, m_peer,
666 m_actions, modifiers, dragPoint.x, dragPoint.y);
667 m_bRestoreNodropCustomCursor = TRUE;
668 }
669
670 m_lastmods = modifiers;
671
672 //CR 6480706 - MS Bug on hold
673 HCURSOR hNeedCursor;
674 if (
675 m_bRestoreNodropCustomCursor &&
676 m_cursor != NULL &&
677 (hNeedCursor = m_cursor->GetHCursor()) != ::GetCursor() )
678 {
679 ChangeCursor();
680 m_bRestoreNodropCustomCursor = FALSE;
681 }
682 return S_OK;
683
684 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
685 }
686
687 /**
688 * GiveFeedback
689 */
690
691 HRESULT __stdcall AwtDragSource::GiveFeedback(DWORD dwEffect) {
692 AwtToolkit::GetInstance().eventNumber++;
693 TRY;
694
695 JNIEnv* env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
696 jint modifiers = 0;
697 SHORT mods = 0;
698
699 m_actions = convertDROPEFFECTToActions(dwEffect);
700
701 if (::GetKeyState(VK_LBUTTON) & 0xff00) {
702 mods |= MK_LBUTTON;
703 } else if (::GetKeyState(VK_MBUTTON) & 0xff00) {
704 mods |= MK_MBUTTON;
705 } else if (::GetKeyState(VK_RBUTTON) & 0xff00) {
706 mods |= MK_RBUTTON;
707 }
708
709 if (::GetKeyState(VK_SHIFT) & 0xff00)
710 mods |= MK_SHIFT;
711 if (::GetKeyState(VK_CONTROL) & 0xff00)
712 mods |= MK_CONTROL;
713 if (::GetKeyState(VK_MENU) & 0xff00)
714 mods |= MK_ALT;
715
716 modifiers = AwtComponent::GetJavaModifiers();
717
718 POINT curs;
719
720 ::GetCursorPos(&curs);
721
722 m_droptarget = ::WindowFromPoint(curs);
723
724 int invalid = (dwEffect == DROPEFFECT_NONE);
725
726 if (invalid) {
727 // Don't call dragExit if dragEnter and dragOver haven't been called.
728 if (!m_enterpending) {
729 call_dSCexit(env, m_peer, curs.x, curs.y);
730 }
731 m_droptarget = (HWND)NULL;
732 m_enterpending = TRUE;
733 } else if (m_droptarget != NULL) {
734 (*(m_enterpending ? call_dSCenter : call_dSCmotion))
735 (env, m_peer, m_actions, modifiers, curs.x, curs.y);
736
737 m_enterpending = FALSE;
738 }
739
740 if (m_droptarget != NULL) {
741 RECT rect;
742 POINT client = curs;
743 VERIFY(::ScreenToClient(m_droptarget, &client));
744 VERIFY(::GetClientRect(m_droptarget, &rect));
745 if (::PtInRect(&rect, client)) {
746 m_fNC = FALSE;
747 m_dropPoint = client;
748 } else {
749 m_fNC = TRUE;
750 m_dropPoint = curs;
751 }
752 } else {
753 m_fNC = TRUE;
754 m_dropPoint.x = 0;
755 m_dropPoint.y = 0;
756 }
757
758 m_bRestoreNodropCustomCursor = (dwEffect == DROPEFFECT_NONE);
759
760 return ChangeCursor();
761
762 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
763 }
764
765
766 /**
767 * GetData
768 */
769
770 HRESULT __stdcall AwtDragSource::GetData(FORMATETC __RPC_FAR *pFormatEtc,
771 STGMEDIUM __RPC_FAR *pmedium) {
772 AwtToolkit::GetInstance().eventNumber++;
773 TRY;
774 STGMEDIUM *pPicMedia = PictureDragHelper::FindData(*pFormatEtc);
775 if (NULL != pPicMedia) {
776 *pmedium = *pPicMedia;
777 //return outside, so AddRef the instance of pstm or hGlobal!
778 if (pmedium->tymed == TYMED_ISTREAM) {
779 pmedium->pstm->AddRef();
780 pmedium->pUnkForRelease = (IUnknown *)NULL;
781 } else if (pmedium->tymed == TYMED_HGLOBAL) {
782 AddRef();
783 pmedium->pUnkForRelease = (IDropSource *)this;
784 }
785 return S_OK;
786 }
787
788 HRESULT res = GetProcessId(pFormatEtc, pmedium);
789 if (res == S_OK) {
790 return res;
791 }
792
793 FORMATETC matchedFormatEtc;
794 res = MatchFormatEtc(pFormatEtc, &matchedFormatEtc);
795 if (res != S_OK) {
796 return res;
797 }
798
799 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
800
801 if (env->PushLocalFrame(2) < 0) {
802 return E_OUTOFMEMORY;
803 }
804
805 jbyteArray bytes =
806 AwtDataTransferer::ConvertData(env, m_component, m_transferable,
807 (jlong)matchedFormatEtc.cfFormat,
808 m_formatMap);
809 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
810 env->ExceptionDescribe();
811 env->ExceptionClear();
812 env->PopLocalFrame(NULL);
813 return E_UNEXPECTED;
814 }
815 if (bytes == NULL) {
816 env->PopLocalFrame(NULL);
817 return E_UNEXPECTED;
818 }
819
820 jint nBytes = env->GetArrayLength(bytes);
821
822 if ((matchedFormatEtc.tymed & TYMED_ISTREAM) != 0) {
823 ADSIStreamProxy *istream = new ADSIStreamProxy(this, bytes, nBytes);
824
825 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
826 env->ExceptionDescribe();
827 env->ExceptionClear();
828 env->PopLocalFrame(NULL);
829 return E_UNEXPECTED;
830 }
831
832 pmedium->tymed = TYMED_ISTREAM;
833 pmedium->pstm = istream;
834 pmedium->pUnkForRelease = (IUnknown *)NULL;
835
836 env->PopLocalFrame(NULL);
837 return S_OK;
838 } else if ((matchedFormatEtc.tymed & TYMED_HGLOBAL) != 0) {
839 HGLOBAL copy = ::GlobalAlloc(GALLOCFLG, nBytes +
840 ((matchedFormatEtc.cfFormat == CF_HDROP)
841 ? sizeof(DROPFILES)
842 : 0));
843 if (copy == NULL) {
844 env->PopLocalFrame(NULL);
845 throw std::bad_alloc();
846 }
847
848 char *dataout = (char *)::GlobalLock(copy);
849
850 if (matchedFormatEtc.cfFormat == CF_HDROP) {
851 DROPFILES *dropfiles = (DROPFILES *)dataout;
852 dropfiles->pFiles = sizeof(DROPFILES);
853 dropfiles->pt.x = m_dropPoint.x;
854 dropfiles->pt.y = m_dropPoint.y;
855 dropfiles->fNC = m_fNC;
856 dropfiles->fWide = TRUE; // we publish only Unicode
857 dataout += sizeof(DROPFILES);
858 }
859
860 env->GetByteArrayRegion(bytes, 0, nBytes, (jbyte *)dataout);
861 ::GlobalUnlock(copy);
862
863 pmedium->tymed = TYMED_HGLOBAL;
864 pmedium->hGlobal = copy;
865 pmedium->pUnkForRelease = (IUnknown *)NULL;
866
867 env->PopLocalFrame(NULL);
868 return S_OK;
869 } else if ((matchedFormatEtc.tymed & TYMED_ENHMF) != 0) {
870 LPBYTE lpbEmfBuffer =
871 (LPBYTE)env->GetPrimitiveArrayCritical(bytes, NULL);
872 if (lpbEmfBuffer == NULL) {
873 env->PopLocalFrame(NULL);
874 throw std::bad_alloc();
875 }
876
877 HENHMETAFILE hemf = ::SetEnhMetaFileBits(nBytes, lpbEmfBuffer);
878
879 env->ReleasePrimitiveArrayCritical(bytes, (LPVOID)lpbEmfBuffer, JNI_ABORT);
880
881 if (hemf == NULL) {
882 env->PopLocalFrame(NULL);
883 return E_UNEXPECTED;
884 }
885
886 pmedium->tymed = TYMED_ENHMF;
887 pmedium->hEnhMetaFile = hemf;
888 pmedium->pUnkForRelease = (IUnknown *)NULL;
889
890 env->PopLocalFrame(NULL);
891 return S_OK;
892 } else if ((matchedFormatEtc.tymed & TYMED_MFPICT) != 0) {
893 LPBYTE lpbMfpBuffer =
894 (LPBYTE)env->GetPrimitiveArrayCritical(bytes, NULL);
895 if (lpbMfpBuffer == NULL) {
896 env->PopLocalFrame(NULL);
897 throw std::bad_alloc();
898 }
899
900 HMETAFILE hmf = ::SetMetaFileBitsEx(nBytes - sizeof(METAFILEPICT),
901 lpbMfpBuffer + sizeof(METAFILEPICT));
902 if (hmf == NULL) {
903 env->ReleasePrimitiveArrayCritical(bytes, (LPVOID)lpbMfpBuffer, JNI_ABORT);
904 env->PopLocalFrame(NULL);
905 return E_UNEXPECTED;
906 }
907
908 LPMETAFILEPICT lpMfpOld = (LPMETAFILEPICT)lpbMfpBuffer;
909
910 HMETAFILEPICT hmfp = ::GlobalAlloc(GALLOCFLG, sizeof(METAFILEPICT));
911 if (hmfp == NULL) {
912 VERIFY(::DeleteMetaFile(hmf));
913 env->ReleasePrimitiveArrayCritical(bytes, (LPVOID)lpbMfpBuffer, JNI_ABORT);
914 env->PopLocalFrame(NULL);
915 throw std::bad_alloc();
916 }
917
918 LPMETAFILEPICT lpMfp = (LPMETAFILEPICT)::GlobalLock(hmfp);
919 lpMfp->mm = lpMfpOld->mm;
920 lpMfp->xExt = lpMfpOld->xExt;
921 lpMfp->yExt = lpMfpOld->yExt;
922 lpMfp->hMF = hmf;
923 ::GlobalUnlock(hmfp);
924
925 env->ReleasePrimitiveArrayCritical(bytes, (LPVOID)lpbMfpBuffer, JNI_ABORT);
926
927 pmedium->tymed = TYMED_MFPICT;
928 pmedium->hMetaFilePict = hmfp;
929 pmedium->pUnkForRelease = (IUnknown *)NULL;
930
931 env->PopLocalFrame(NULL);
932 return S_OK;
933 }
934
935 env->PopLocalFrame(NULL);
936 return DV_E_TYMED;
937
938 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
939 }
940
941 /**
942 * GetDataHere
943 */
944
945 HRESULT __stdcall AwtDragSource::GetDataHere(FORMATETC __RPC_FAR *pFormatEtc,
946 STGMEDIUM __RPC_FAR *pmedium) {
947 AwtToolkit::GetInstance().eventNumber++;
948 TRY;
949
950 if (pmedium->pUnkForRelease != (IUnknown *)NULL) {
951 return E_INVALIDARG;
952 }
953
954 HRESULT res = GetProcessId(pFormatEtc, pmedium);
955 if (res == S_OK) {
956 return res;
957 }
958
959 FORMATETC matchedFormatEtc;
960 res = MatchFormatEtc(pFormatEtc, &matchedFormatEtc);
961 if (res != S_OK) {
962 return res;
963 }
964
965 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
966
967 if (env->PushLocalFrame(2) < 0) {
968 return E_OUTOFMEMORY;
969 }
970
971 jbyteArray bytes =
972 AwtDataTransferer::ConvertData(env, m_component, m_transferable,
973 (jlong)matchedFormatEtc.cfFormat,
974 m_formatMap);
975 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
976 env->ExceptionDescribe();
977 env->ExceptionClear();
978 env->PopLocalFrame(NULL);
979 return E_UNEXPECTED;
980 }
981 if (bytes == NULL) {
982 env->PopLocalFrame(NULL);
983 return E_UNEXPECTED;
984 }
985
986 jint nBytes = env->GetArrayLength(bytes);
987
988 // NOTE: TYMED_ENHMF and TYMED_MFPICT are not valid for GetDataHere().
989 if ((matchedFormatEtc.tymed & TYMED_ISTREAM) != 0) {
990 jboolean isCopy;
991 jbyte *bBytes = env->GetByteArrayElements(bytes, &isCopy);
992 if (bBytes == NULL) {
993 env->PopLocalFrame(NULL);
994 return E_UNEXPECTED;
995 }
996
997 ULONG act;
998 HRESULT res = pmedium->pstm->Write((const void *)bBytes, (ULONG)nBytes,
999 &act);
1000
1001 env->ReleaseByteArrayElements(bytes, bBytes, JNI_ABORT);
1002
1003 env->PopLocalFrame(NULL);
1004 return S_OK;
1005 } else if ((matchedFormatEtc.tymed & TYMED_HGLOBAL) != 0) {
1006 ::SetLastError(0); // clear error
1007 // Warning C4244.
1008 SIZE_T mBytes = ::GlobalSize(pmedium->hGlobal);
1009 if (::GetLastError() != 0) {
1010 env->PopLocalFrame(NULL);
1011 return E_UNEXPECTED;
1012 }
1013
1014 if (nBytes + ((matchedFormatEtc.cfFormat == CF_HDROP)
1015 ? sizeof(DROPFILES) : 0) > mBytes) {
1016 env->PopLocalFrame(NULL);
1017 return STG_E_MEDIUMFULL;
1018 }
1019
1020 char *dataout = (char *)::GlobalLock(pmedium->hGlobal);
1021
1022 if (matchedFormatEtc.cfFormat == CF_HDROP) {
1023 DROPFILES *dropfiles = (DROPFILES *)dataout;
1024 dropfiles->pFiles = sizeof(DROPFILES);
1025 dropfiles->pt.x = m_dropPoint.x;
1026 dropfiles->pt.y = m_dropPoint.y;
1027 dropfiles->fNC = m_fNC;
1028 dropfiles->fWide = TRUE; // good guess!
1029 dataout += sizeof(DROPFILES);
1030 }
1031
1032 env->GetByteArrayRegion(bytes, 0, nBytes, (jbyte *)dataout);
1033 ::GlobalUnlock(pmedium->hGlobal);
1034
1035 env->PopLocalFrame(NULL);
1036 return S_OK;
1037 }
1038
1039 env->PopLocalFrame(NULL);
1040 return DV_E_TYMED;
1041
1042 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1043 }
1044
1045 /**
1046 * QueryGetData
1047 */
1048
1049 HRESULT __stdcall AwtDragSource::QueryGetData(FORMATETC __RPC_FAR *pFormatEtc) {
1050 AwtToolkit::GetInstance().eventNumber++;
1051 TRY;
1052
1053 return MatchFormatEtc(pFormatEtc, (FORMATETC *)NULL);
1054
1055 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1056 }
1057
1058
1059 /**
1060 * GetCanonicalFormatEtc
1061 */
1062
1063 HRESULT __stdcall AwtDragSource::GetCanonicalFormatEtc(FORMATETC __RPC_FAR *pFormatEtcIn, FORMATETC __RPC_FAR *pFormatEtcOut) {
1064 AwtToolkit::GetInstance().eventNumber++;
1065 TRY;
1066
1067 HRESULT res = MatchFormatEtc(pFormatEtcIn, (FORMATETC *)NULL);
1068
1069 if (res != S_OK) return res;
1070
1071 *pFormatEtcOut = *pFormatEtcIn;
1072
1073 pFormatEtcOut->ptd = NULL;
1074
1075 return DATA_S_SAMEFORMATETC;
1076
1077 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1078 }
1079
1080 /**
1081 * SetData
1082 */
1083
1084 HRESULT __stdcall AwtDragSource::SetData(FORMATETC __RPC_FAR *pFormatEtc, STGMEDIUM __RPC_FAR *pmedium, BOOL fRelease) {
1085 AwtToolkit::GetInstance().eventNumber++;
1086 if (pFormatEtc->cfFormat == CF_PERFORMEDDROPEFFECT && pmedium->tymed == TYMED_HGLOBAL) {
1087 m_dwPerformedDropEffect = *(DWORD*)::GlobalLock(pmedium->hGlobal);
1088 ::GlobalUnlock(pmedium->hGlobal);
1089 if (fRelease) {
1090 ::ReleaseStgMedium(pmedium);
1091 }
1092 return S_OK;
1093 }
1094
1095 if (fRelease) {
1096 //we are copying pmedium as a structure for further use, so no any release!
1097 PictureDragHelper::SetData(*pFormatEtc, *pmedium);
1098 return S_OK;
1099 }
1100 return E_UNEXPECTED;
1101 }
1102
1103 /**
1104 * EnumFormatEtc
1105 */
1106
1107 HRESULT __stdcall AwtDragSource::EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC *__RPC_FAR *ppenumFormatEtc) {
1108 AwtToolkit::GetInstance().eventNumber++;
1109 TRY;
1110
1111 *ppenumFormatEtc = new ADSIEnumFormatEtc(this);
1112 return S_OK;
1113
1114 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1115 }
1116
1117 /**
1118 * DAdvise
1119 */
1120
1121 HRESULT __stdcall AwtDragSource::DAdvise(FORMATETC __RPC_FAR *pFormatEtc, DWORD advf, IAdviseSink __RPC_FAR *pAdvSink, DWORD __RPC_FAR *pdwConnection) {
1122 AwtToolkit::GetInstance().eventNumber++;
1123 return E_NOTIMPL;
1124 }
1125
1126 /**
1127 * DUnadvise
1128 */
1129
1130 HRESULT __stdcall AwtDragSource::DUnadvise(DWORD dwConnection) {
1131 AwtToolkit::GetInstance().eventNumber++;
1132 return OLE_E_ADVISENOTSUPPORTED;
1133 }
1134
1135 /**
1136 * EnumAdvise
1137 */
1138
1139 HRESULT __stdcall AwtDragSource::EnumDAdvise(IEnumSTATDATA __RPC_FAR *__RPC_FAR *ppenumAdvise) {
1140 AwtToolkit::GetInstance().eventNumber++;
1141 return OLE_E_ADVISENOTSUPPORTED;
1142 }
1143
1144 const UINT AwtDragSource::PROCESS_ID_FORMAT =
1145 ::RegisterClipboardFormat(TEXT("_SUNW_JAVA_AWT_PROCESS_ID"));
1146
1147 HRESULT __stdcall AwtDragSource::GetProcessId(FORMATETC __RPC_FAR *pFormatEtc, STGMEDIUM __RPC_FAR *pmedium) {
1148 AwtToolkit::GetInstance().eventNumber++;
1149 if ((pFormatEtc->tymed & TYMED_HGLOBAL) == 0) {
1150 return DV_E_TYMED;
1151 } else if (pFormatEtc->lindex != -1) {
1152 return DV_E_LINDEX;
1153 } else if (pFormatEtc->dwAspect != DVASPECT_CONTENT) {
1154 return DV_E_DVASPECT;
1155 } else if (pFormatEtc->cfFormat != PROCESS_ID_FORMAT) {
1156 return DV_E_FORMATETC;
1157 }
1158
1159 DWORD id = ::CoGetCurrentProcess();
1160
1161 HGLOBAL copy = ::GlobalAlloc(GALLOCFLG, sizeof(id));
1162
1163 if (copy == NULL) {
1164 throw std::bad_alloc();
1165 }
1166
1167 char *dataout = (char *)::GlobalLock(copy);
1168
1169 memcpy(dataout, &id, sizeof(id));
1170 ::GlobalUnlock(copy);
1171
1172 pmedium->tymed = TYMED_HGLOBAL;
1173 pmedium->hGlobal = copy;
1174 pmedium->pUnkForRelease = (IUnknown *)NULL;
1175
1176 return S_OK;
1177 }
1178
1179 DECLARE_JAVA_CLASS(dSCClazz, "sun/awt/windows/WDragSourceContextPeer")
1180
1181 void
1182 AwtDragSource::call_dSCenter(JNIEnv* env, jobject self, jint targetActions,
1183 jint modifiers, jint x, jint y) {
1184 DECLARE_VOID_JAVA_METHOD(dSCenter, dSCClazz, "dragEnter", "(IIII)V");
1185 DASSERT(!JNU_IsNull(env, self));
1186 env->CallVoidMethod(self, dSCenter, targetActions, modifiers, x, y);
1187 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
1188 env->ExceptionDescribe();
1189 env->ExceptionClear();
1190 }
1191 }
1192
1193 void
1194 AwtDragSource::call_dSCmotion(JNIEnv* env, jobject self, jint targetActions,
1195 jint modifiers, jint x, jint y) {
1196 DECLARE_VOID_JAVA_METHOD(dSCmotion, dSCClazz, "dragMotion", "(IIII)V");
1197 DASSERT(!JNU_IsNull(env, self));
1198 env->CallVoidMethod(self, dSCmotion, targetActions, modifiers, x, y);
1199 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
1200 env->ExceptionDescribe();
1201 env->ExceptionClear();
1202 }
1203 }
1204
1205 void
1206 AwtDragSource::call_dSCchanged(JNIEnv* env, jobject self, jint targetActions,
1207 jint modifiers, jint x, jint y) {
1208 DECLARE_VOID_JAVA_METHOD(dSCchanged, dSCClazz, "operationChanged",
1209 "(IIII)V");
1210 DASSERT(!JNU_IsNull(env, self));
1211 env->CallVoidMethod(self, dSCchanged, targetActions, modifiers, x, y);
1212 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
1213 env->ExceptionDescribe();
1214 env->ExceptionClear();
1215 }
1216 }
1217
1218 void
1219 AwtDragSource::call_dSCexit(JNIEnv* env, jobject self, jint x, jint y) {
1220 DECLARE_VOID_JAVA_METHOD(dSCexit, dSCClazz, "dragExit", "(II)V");
1221 DASSERT(!JNU_IsNull(env, self));
1222 env->CallVoidMethod(self, dSCexit, x, y);
1223 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
1224 env->ExceptionDescribe();
1225 env->ExceptionClear();
1226 }
1227 }
1228
1229 void
1230 AwtDragSource::call_dSCddfinished(JNIEnv* env, jobject self, jboolean success,
1231 jint operations, jint x, jint y) {
1232 DECLARE_VOID_JAVA_METHOD(dSCddfinished, dSCClazz, "dragDropFinished", "(ZIII)V");
1233 DASSERT(!JNU_IsNull(env, self));
1234 env->CallVoidMethod(self, dSCddfinished, success, operations, x, y);
1235 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
1236 env->ExceptionDescribe();
1237 env->ExceptionClear();
1238 }
1239 }
1240
1241 void
1242 AwtDragSource::call_dSCmouseMoved(JNIEnv* env, jobject self, jint targetActions,
1243 jint modifiers, jint x, jint y) {
1244 DECLARE_VOID_JAVA_METHOD(dSCmouseMoved, dSCClazz, "dragMouseMoved",
1245 "(IIII)V");
1246 DASSERT(!JNU_IsNull(env, self));
1247 env->CallVoidMethod(self, dSCmouseMoved, targetActions, modifiers, x, y);
1248 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) {
1249 env->ExceptionDescribe();
1250 env->ExceptionClear();
1251 }
1252 }
1253
1254 DECLARE_JAVA_CLASS(awtIEClazz, "java/awt/event/InputEvent")
1255
1256 /**
1257 * Constructor
1258 */
1259
1260 AwtDragSource::ADSIEnumFormatEtc::ADSIEnumFormatEtc(AwtDragSource* parent) {
1261 m_parent = parent;
1262 m_idx = 0;
1263
1264 m_refs = 0;
1265
1266 m_parent->AddRef();
1267
1268 AddRef();
1269 }
1270
1271 /**
1272 * Destructor
1273 */
1274
1275 AwtDragSource::ADSIEnumFormatEtc::~ADSIEnumFormatEtc() {
1276 m_parent->Release();
1277 }
1278
1279 /**
1280 * QueryInterface
1281 */
1282
1283 HRESULT __stdcall AwtDragSource::ADSIEnumFormatEtc::QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject) {
1284 TRY;
1285
1286 if (riid == IID_IUnknown) {
1287 *ppvObject = (void __RPC_FAR *__RPC_FAR)(IUnknown*)this;
1288 AddRef();
1289 return S_OK;
1290 } else if (riid == IID_IEnumFORMATETC) {
1291 *ppvObject = (void __RPC_FAR *__RPC_FAR)(IEnumFORMATETC*)this;
1292 AddRef();
1293 return S_OK;
1294 } else {
1295 *ppvObject = (void __RPC_FAR *__RPC_FAR)NULL;
1296 return E_NOINTERFACE;
1297 }
1298
1299 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1300 }
1301
1302 /**
1303 * AddRef
1304 */
1305
1306 ULONG __stdcall AwtDragSource::ADSIEnumFormatEtc::AddRef(void) {
1307 return (ULONG)++m_refs;
1308 }
1309
1310 /**
1311 * Release
1312 */
1313
1314 ULONG __stdcall AwtDragSource::ADSIEnumFormatEtc::Release(void) {
1315 int refs;
1316
1317 if ((refs = --m_refs) == 0) delete this;
1318
1319 return (ULONG)refs;
1320 }
1321
1322 /**
1323 * Next
1324 */
1325
1326 HRESULT _stdcall AwtDragSource::ADSIEnumFormatEtc::Next(ULONG celt, FORMATETC __RPC_FAR *rgelt, ULONG __RPC_FAR *pceltFetched) {
1327 TRY;
1328
1329 unsigned int len = m_parent->getNTypes();
1330 unsigned int i;
1331
1332 for (i = 0; i < celt && m_idx < len; i++, m_idx++) {
1333 FORMATETC fetc = m_parent->getType(m_idx);
1334 rgelt[i] = fetc;
1335 }
1336
1337 if (pceltFetched != NULL) *pceltFetched = i;
1338
1339 return i == celt ? S_OK : S_FALSE;
1340
1341 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1342 }
1343
1344 /**
1345 * Skip
1346 */
1347
1348 HRESULT __stdcall AwtDragSource::ADSIEnumFormatEtc::Skip(ULONG celt) {
1349 TRY;
1350
1351 unsigned int len = m_parent->getNTypes();
1352 unsigned int tmp = m_idx + celt;
1353
1354 if (tmp < len) {
1355 m_idx = tmp;
1356
1357 return S_OK;
1358 } else {
1359 m_idx = len;
1360
1361 return S_FALSE;
1362 }
1363
1364 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1365 }
1366
1367 /**
1368 * Reset
1369 */
1370
1371 HRESULT __stdcall AwtDragSource::ADSIEnumFormatEtc::Reset(void) {
1372 m_idx = 0;
1373
1374 return S_OK;
1375 }
1376
1377 /**
1378 * Clone
1379 */
1380
1381 HRESULT __stdcall AwtDragSource::ADSIEnumFormatEtc::Clone(IEnumFORMATETC __RPC_FAR *__RPC_FAR *ppenum) {
1382 TRY;
1383
1384 *ppenum = new ADSIEnumFormatEtc(m_parent);
1385 (*ppenum)->Skip(m_idx);
1386 return S_OK;
1387
1388 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1389 }
1390
1391 /**
1392 * constructor
1393 */
1394
1395 AwtDragSource::ADSIStreamProxy::ADSIStreamProxy(AwtDragSource* parent, jbyteArray buffer, jint blen) {
1396 JNIEnv* env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
1397
1398 m_parent = parent;
1399
1400 m_buffer = (signed char *)safe_Calloc(sizeof(signed char), m_blen = blen);
1401
1402 env->GetByteArrayRegion(buffer, 0, blen, m_buffer);
1403
1404 if (!JNU_IsNull(env, safe_ExceptionOccurred(env))) return;
1405
1406 m_off = 0;
1407
1408 m_cloneof = (ADSIStreamProxy*)NULL;
1409
1410 m_refs = 0;
1411
1412 FILETIME now;
1413
1414 ::CoFileTimeNow(&now);
1415
1416 m_statstg.pwcsName = (LPWSTR)NULL;
1417 m_statstg.type = STGTY_STREAM;
1418 m_statstg.cbSize.HighPart = 0;
1419 m_statstg.cbSize.LowPart = m_blen;
1420 m_statstg.mtime = now;
1421 m_statstg.ctime = now;
1422 m_statstg.atime = now;
1423 m_statstg.grfMode = STGM_READ;
1424 m_statstg.grfLocksSupported = FALSE;
1425 m_statstg.clsid = CLSID_NULL;
1426 m_statstg.grfStateBits = 0;
1427 m_statstg.reserved = 0;
1428
1429 m_parent->AddRef();
1430
1431 AddRef();
1432 }
1433
1434 /**
1435 * constructor (clone)
1436 */
1437
1438 AwtDragSource::ADSIStreamProxy::ADSIStreamProxy(ADSIStreamProxy* cloneof) {
1439 m_cloneof = cloneof;
1440
1441 m_parent = cloneof->m_parent;
1442
1443 m_buffer = cloneof->m_buffer;
1444 m_blen = cloneof->m_blen;
1445 m_off = cloneof->m_off;
1446
1447 m_statstg = cloneof->m_statstg;
1448
1449 m_refs = 0;
1450
1451 m_parent->AddRef();
1452 m_cloneof->AddRef();
1453 }
1454
1455 /**
1456 * destructor
1457 */
1458
1459 AwtDragSource::ADSIStreamProxy::~ADSIStreamProxy() {
1460 if (m_cloneof == (ADSIStreamProxy*)NULL)
1461 free((void *)m_buffer);
1462 else {
1463 m_cloneof->Release();
1464 }
1465
1466 m_parent->Release();
1467 }
1468
1469 /**
1470 * QueryInterface
1471 */
1472
1473 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject) {
1474 TRY;
1475
1476 if (riid == IID_IUnknown) {
1477 *ppvObject = (void __RPC_FAR *__RPC_FAR)(IUnknown*)this;
1478 AddRef();
1479 return S_OK;
1480 } else if (riid == IID_IStream) {
1481 *ppvObject = (void __RPC_FAR *__RPC_FAR)(IStream*)this;
1482 AddRef();
1483 return S_OK;
1484 } else {
1485 *ppvObject = (void __RPC_FAR *__RPC_FAR)NULL;
1486 return E_NOINTERFACE;
1487 }
1488
1489 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1490 }
1491
1492 /**
1493 * AddRef
1494 */
1495
1496 ULONG __stdcall AwtDragSource::ADSIStreamProxy::AddRef(void) {
1497 return (ULONG)++m_refs;
1498 }
1499
1500 /**
1501 * Release
1502 */
1503
1504 ULONG __stdcall AwtDragSource::ADSIStreamProxy::Release(void) {
1505 int refs;
1506
1507 if ((refs = --m_refs) == 0) delete this;
1508
1509 return (ULONG)refs;
1510 }
1511
1512 /**
1513 * Read
1514 */
1515
1516 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::Read(void __RPC_FAR *pv, ULONG cb, ULONG __RPC_FAR *pcbRead) {
1517 TRY;
1518
1519 unsigned int rem = m_blen - m_off;
1520 int read = cb > rem ? rem : cb;
1521
1522 if (read > 0) memmove(pv, (void *)(m_buffer + m_off), read);
1523
1524 m_off += read;
1525
1526 if (pcbRead != (ULONG __RPC_FAR *)NULL) {
1527 *pcbRead = read;
1528 }
1529
1530 FILETIME now; ::CoFileTimeNow(&now); m_statstg.atime = now;
1531
1532 return S_OK;
1533
1534 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1535 }
1536
1537 /**
1538 * Write
1539 */
1540
1541 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::Write(const void __RPC_FAR *pv, ULONG cb, ULONG __RPC_FAR *pcbWritten) {
1542 TRY;
1543
1544 if (pcbWritten != (ULONG __RPC_FAR *)NULL) {
1545 *pcbWritten = 0;
1546 }
1547
1548 FILETIME now; ::CoFileTimeNow(&now); m_statstg.atime = now;
1549
1550 return STG_E_CANTSAVE; // don't support writing
1551
1552 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1553 }
1554
1555 /**
1556 * Seek
1557 */
1558
1559 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::Seek(LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER __RPC_FAR *plibNewPosition) {
1560 TRY;
1561
1562 if (dlibMove.HighPart != 0) return STG_E_INVALIDPOINTER;
1563
1564 if (plibNewPosition != (ULARGE_INTEGER __RPC_FAR *)NULL) {
1565 plibNewPosition->HighPart = 0;
1566 plibNewPosition->LowPart = 0;
1567 }
1568
1569 switch (dwOrigin) {
1570 case STREAM_SEEK_SET: {
1571 if (dlibMove.HighPart != 0 || dlibMove.LowPart >= m_blen) return STG_E_INVALIDPOINTER;
1572
1573 m_off = dlibMove.LowPart;
1574 }
1575 break;
1576
1577 case STREAM_SEEK_CUR:
1578 case STREAM_SEEK_END: {
1579 if (dlibMove.HighPart > 0) return STG_E_INVALIDPOINTER;
1580
1581 long newoff = (dwOrigin == STREAM_SEEK_END ? m_blen : m_off) + dlibMove.LowPart;
1582
1583 if (newoff < 0 || newoff >= (long)m_blen)
1584 return STG_E_INVALIDPOINTER;
1585 else
1586 m_off = newoff;
1587 }
1588 break;
1589
1590 default: return STG_E_INVALIDFUNCTION;
1591 }
1592
1593 if (plibNewPosition != (ULARGE_INTEGER __RPC_FAR *)NULL)
1594 plibNewPosition->LowPart = m_off;
1595
1596 FILETIME now; ::CoFileTimeNow(&now); m_statstg.atime = now;
1597
1598 return S_OK;
1599
1600 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1601 }
1602
1603 /**
1604 * SetSize
1605 */
1606
1607 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::SetSize(ULARGE_INTEGER libNewSize) {
1608 return STG_E_INVALIDFUNCTION;
1609 }
1610
1611 /**
1612 * CopyTo
1613 */
1614
1615 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::CopyTo(IStream __RPC_FAR *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER __RPC_FAR *pcbRead, ULARGE_INTEGER __RPC_FAR *pcbWritten) {
1616 TRY;
1617
1618 ULONG written = 0;
1619
1620 pcbWritten->HighPart = (ULONG)0;
1621 pcbWritten->LowPart = (ULONG)0;
1622
1623 pcbRead->HighPart = (ULONG)0;
1624
1625 unsigned int rem = m_blen - m_off;
1626 int ovrflow = cb.LowPart >= rem;
1627
1628
1629 if (cb.HighPart != 0) return STG_E_INVALIDPOINTER;
1630
1631 ULONG nbytes = pcbRead->LowPart = (ULONG)(ovrflow ? rem : cb.LowPart);
1632
1633 HRESULT res = pstm->Write((const void *)(m_buffer + m_off), nbytes, &written);
1634
1635 pcbWritten->LowPart = written;
1636
1637 FILETIME now; ::CoFileTimeNow(&now); m_statstg.atime = now;
1638
1639 return res;
1640
1641 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1642 }
1643
1644 /**
1645 * Commit
1646 */
1647
1648 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::Commit(DWORD grfCommitFlags) {
1649 return S_OK;
1650 }
1651
1652 /**
1653 * Revert
1654 */
1655
1656 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::Revert() {
1657 return S_OK;
1658 }
1659
1660 /**
1661 * LockRegion
1662 */
1663
1664 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::LockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) {
1665 return STG_E_INVALIDFUNCTION;
1666 }
1667
1668 /**
1669 * UnlockRegion
1670 */
1671
1672 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::UnlockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) {
1673 return STG_E_INVALIDFUNCTION;
1674 }
1675
1676 /**
1677 * Stat
1678 */
1679
1680 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::Stat(STATSTG __RPC_FAR *pstatstg, DWORD grfStatFlag) {
1681 TRY;
1682
1683 *pstatstg = m_statstg;
1684
1685 FILETIME now; ::CoFileTimeNow(&now); m_statstg.atime = now;
1686
1687 return S_OK;
1688
1689 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1690 }
1691
1692 /**
1693 * Clone
1694 */
1695
1696 HRESULT __stdcall AwtDragSource::ADSIStreamProxy::Clone(IStream __RPC_FAR *__RPC_FAR *ppstm) {
1697 TRY;
1698
1699 *ppstm = new ADSIStreamProxy(this);
1700 return S_OK;
1701
1702 CATCH_BAD_ALLOC_RET(E_OUTOFMEMORY);
1703 }
1704
1705 /*****************************************************************************/
1706
1707 extern "C" {
1708
1709 /**
1710 * setNativeCursor
1711 */
1712
1713 JNIEXPORT void JNICALL
1714 Java_sun_awt_windows_WDragSourceContextPeer_setNativeCursor(JNIEnv* env,
1715 jobject self,
1716 jlong nativeCtxt,
1717 jobject cursor,
1718 jint type) {
1719 TRY;
1720
1721 AwtDragSource* ds = (AwtDragSource*)nativeCtxt;
1722 if (ds != NULL) {
1723 ds->SetCursor(cursor);
1724 }
1725
1726 CATCH_BAD_ALLOC;
1727 }
1728
1729 /**
1730 * createDragSource
1731 */
1732
1733 JNIEXPORT jlong JNICALL
1734 Java_sun_awt_windows_WDragSourceContextPeer_createDragSource(
1735 JNIEnv* env, jobject self, jobject component, jobject transferable,
1736 jobject trigger, jint actions,
1737 jlongArray formats, jobject formatMap)
1738 {
1739 TRY;
1740
1741 if (!AwtDropTarget::IsCurrentDnDDataObject(NULL)) {
1742 JNU_ThrowByName(env, "java/awt/dnd/InvalidDnDOperationException",
1743 "Drag and drop is in progress");
1744 return (jlong)NULL;
1745 }
1746
1747 AwtDragSource* ds = new AwtDragSource(env, self, component,
1748 transferable, trigger, actions,
1749 formats, formatMap);
1750
1751 DASSERT(AwtDropTarget::IsLocalDataObject(ds));
1752
1753 return (jlong)ds;
1754
1755 CATCH_BAD_ALLOC_RET(0);
1756 }
1757
1758 /**
1759 * doDragDrop
1760 */
1761
1762 JNIEXPORT void JNICALL Java_sun_awt_windows_WDragSourceContextPeer_doDragDrop(
1763 JNIEnv* env,
1764 jobject self,
1765 jlong nativeCtxt,
1766 jobject cursor,
1767 jintArray imageData,
1768 jint imageWidth, jint imageHeight,
1769 jint x, jint y)
1770 {
1771 TRY;
1772
1773 cursor = env->NewGlobalRef(cursor);
1774 if (NULL != imageData) {
1775 imageData = (jintArray)env->NewGlobalRef(imageData);
1776 }
1777
1778 AwtDragSource::StartDrag(
1779 (AwtDragSource*)nativeCtxt,
1780 cursor,
1781 imageData,
1782 imageWidth, imageHeight,
1783 x, y);
1784
1785 CATCH_BAD_ALLOC;
1786 }
1787
1788 } /* extern "C" */