forked from Floorp-Projects/Floorp
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathnsWindow.cpp
7692 lines (6718 loc) · 241 KB
/
nsWindow.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sts=2 sw=2 et cin: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* nsWindow - Native window management and event handling.
*
* nsWindow is organized into a set of major blocks and
* block subsections. The layout is as follows:
*
* Includes
* Variables
* nsIWidget impl.
* nsIWidget methods and utilities
* nsSwitchToUIThread impl.
* nsSwitchToUIThread methods and utilities
* Moz events
* Event initialization
* Event dispatching
* Native events
* Wndproc(s)
* Event processing
* OnEvent event handlers
* IME management and accessibility
* Transparency
* Popup hook handling
* Misc. utilities
* Child window impl.
*
* Search for "BLOCK:" to find major blocks.
* Search for "SECTION:" to find specific sections.
*
* Blocks should be split out into separate files if they
* become unmanageable.
*
* Related source:
*
* nsWindowDefs.h - Definitions, macros, structs, enums
* and general setup.
* nsWindowDbg.h/.cpp - Debug related code and directives.
* nsWindowGfx.h/.cpp - Graphics and painting.
*
*/
/**************************************************************
**************************************************************
**
** BLOCK: Includes
**
** Include headers.
**
**************************************************************
**************************************************************/
#include "gfx2DGlue.h"
#include "gfxPlatform.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/MiscEvents.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/TouchEvents.h"
#include "mozilla/ipc/MessageChannel.h"
#include <algorithm>
#include <limits>
#include "nsWindow.h"
#include <shellapi.h>
#include <windows.h>
#include <wtsapi32.h>
#include <process.h>
#include <commctrl.h>
#include <unknwn.h>
#include <psapi.h>
#include "prlog.h"
#include "prtime.h"
#include "prprf.h"
#include "prmem.h"
#include "prenv.h"
#include "mozilla/WidgetTraceEvent.h"
#include "nsIAppShell.h"
#include "nsISupportsPrimitives.h"
#include "nsIDOMMouseEvent.h"
#include "nsITheme.h"
#include "nsIObserverService.h"
#include "nsIScreenManager.h"
#include "imgIContainer.h"
#include "nsIFile.h"
#include "nsIRollupListener.h"
#include "nsIServiceManager.h"
#include "nsIClipboard.h"
#include "nsIMM32Handler.h"
#include "WinMouseScrollHandler.h"
#include "nsFontMetrics.h"
#include "nsIFontEnumerator.h"
#include "nsFont.h"
#include "nsRect.h"
#include "nsThreadUtils.h"
#include "nsNativeCharsetUtils.h"
#include "nsGkAtoms.h"
#include "nsCRT.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsXPIDLString.h"
#include "nsWidgetsCID.h"
#include "nsTHashtable.h"
#include "nsHashKeys.h"
#include "nsString.h"
#include "mozilla/Services.h"
#include "nsNativeThemeWin.h"
#include "nsWindowsDllInterceptor.h"
#include "nsLayoutUtils.h"
#include "nsView.h"
#include "nsIWindowMediator.h"
#include "nsIServiceManager.h"
#include "nsWindowGfx.h"
#include "gfxWindowsPlatform.h"
#include "Layers.h"
#include "nsPrintfCString.h"
#include "mozilla/Preferences.h"
#include "nsISound.h"
#include "WinTaskbar.h"
#include "WinUtils.h"
#include "WidgetUtils.h"
#include "nsIWidgetListener.h"
#include "mozilla/dom/Touch.h"
#include "mozilla/gfx/2D.h"
#include "nsToolkitCompsCID.h"
#include "nsIAppStartup.h"
#include "mozilla/WindowsVersion.h"
#include "nsThemeConstants.h"
#ifdef MOZ_ENABLE_D3D9_LAYER
#include "LayerManagerD3D9.h"
#endif
#ifdef MOZ_ENABLE_D3D10_LAYER
#include "LayerManagerD3D10.h"
#endif
#include "nsIGfxInfo.h"
#include "nsUXThemeConstants.h"
#include "KeyboardLayout.h"
#include "nsNativeDragTarget.h"
#include <mmsystem.h> // needed for WIN32_LEAN_AND_MEAN
#include <zmouse.h>
#include <richedit.h>
#if defined(ACCESSIBILITY)
#ifdef DEBUG
#include "mozilla/a11y/Logging.h"
#endif
#include "oleidl.h"
#include <winuser.h>
#include "nsAccessibilityService.h"
#include "mozilla/a11y/DocAccessible.h"
#include "mozilla/a11y/Platform.h"
#if !defined(WINABLEAPI)
#include <winable.h>
#endif // !defined(WINABLEAPI)
#endif // defined(ACCESSIBILITY)
#include "nsIWinTaskbar.h"
#define NS_TASKBAR_CONTRACTID "@mozilla.org/windows-taskbar;1"
#include "nsWindowDefs.h"
#include "nsCrashOnException.h"
#include "nsIXULRuntime.h"
#include "nsIContent.h"
#include "mozilla/HangMonitor.h"
#include "WinIMEHandler.h"
#include "npapi.h"
#if !defined(SM_CONVERTIBLESLATEMODE)
#define SM_CONVERTIBLESLATEMODE 0x2003
#endif
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::gfx;
using namespace mozilla::layers;
using namespace mozilla::widget;
/**************************************************************
**************************************************************
**
** BLOCK: Variables
**
** nsWindow Class static initializations and global variables.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: nsWindow statics
*
**************************************************************/
bool nsWindow::sDropShadowEnabled = true;
uint32_t nsWindow::sInstanceCount = 0;
bool nsWindow::sSwitchKeyboardLayout = false;
BOOL nsWindow::sIsOleInitialized = FALSE;
HCURSOR nsWindow::sHCursor = nullptr;
imgIContainer* nsWindow::sCursorImgContainer = nullptr;
nsWindow* nsWindow::sCurrentWindow = nullptr;
bool nsWindow::sJustGotDeactivate = false;
bool nsWindow::sJustGotActivate = false;
bool nsWindow::sIsInMouseCapture = false;
// imported in nsWidgetFactory.cpp
TriStateBool nsWindow::sCanQuit = TRI_UNKNOWN;
// Hook Data Memebers for Dropdowns. sProcessHook Tells the
// hook methods whether they should be processing the hook
// messages.
HHOOK nsWindow::sMsgFilterHook = nullptr;
HHOOK nsWindow::sCallProcHook = nullptr;
HHOOK nsWindow::sCallMouseHook = nullptr;
bool nsWindow::sProcessHook = false;
UINT nsWindow::sRollupMsgId = 0;
HWND nsWindow::sRollupMsgWnd = nullptr;
UINT nsWindow::sHookTimerId = 0;
// Mouse Clicks - static variable definitions for figuring
// out 1 - 3 Clicks.
POINT nsWindow::sLastMousePoint = {0};
POINT nsWindow::sLastMouseMovePoint = {0};
LONG nsWindow::sLastMouseDownTime = 0L;
LONG nsWindow::sLastClickCount = 0L;
BYTE nsWindow::sLastMouseButton = 0;
// Trim heap on minimize. (initialized, but still true.)
int nsWindow::sTrimOnMinimize = 2;
// Default value for general window class (used when the pref is the empty string).
const char* nsWindow::sDefaultMainWindowClass = kClassNameGeneral;
// If we're using D3D9, this will not be allowed during initial 5 seconds.
bool nsWindow::sAllowD3D9 = false;
TriStateBool nsWindow::sHasBogusPopupsDropShadowOnMultiMonitor = TRI_UNKNOWN;
// Used in OOPP plugin focus processing.
const wchar_t* kOOPPPluginFocusEventId = L"OOPP Plugin Focus Widget Event";
uint32_t nsWindow::sOOPPPluginFocusEvent =
RegisterWindowMessageW(kOOPPPluginFocusEventId);
DWORD nsWindow::sFirstEventTime = 0;
TimeStamp nsWindow::sFirstEventTimeStamp = TimeStamp();
/**************************************************************
*
* SECTION: globals variables
*
**************************************************************/
static const char *sScreenManagerContractID = "@mozilla.org/gfx/screenmanager;1";
#ifdef PR_LOGGING
extern PRLogModuleInfo* gWindowsLog;
#endif
// Global used in Show window enumerations.
static bool gWindowsVisible = false;
// True if we have sent a notification that we are suspending/sleeping.
static bool gIsSleepMode = false;
static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
// General purpose user32.dll hook object
static WindowsDllInterceptor sUser32Intercept;
// 2 pixel offset for eTransparencyBorderlessGlass which equals the size of
// the default window border Windows paints. Glass will be extended inward
// this distance to remove the border.
static const int32_t kGlassMarginAdjustment = 2;
// When the client area is extended out into the default window frame area,
// this is the minimum amount of space along the edge of resizable windows
// we will always display a resize cursor in, regardless of the underlying
// content.
static const int32_t kResizableBorderMinSize = 3;
// Cached pointer events enabler value, True if pointer events are enabled.
static bool gIsPointerEventsEnabled = false;
// We should never really try to accelerate windows bigger than this. In some
// cases this might lead to no D3D9 acceleration where we could have had it
// but D3D9 does not reliably report when it supports bigger windows. 8192
// is as safe as we can get, we know at least D3D10 hardware always supports
// this, other hardware we expect to report correctly in D3D9.
#define MAX_ACCELERATED_DIMENSION 8192
// On window open (as well as after), Windows has an unfortunate habit of
// sending rather a lot of WM_NCHITTEST messages. Because we have to do point
// to DOM target conversions for these, we cache responses for a given
// coordinate this many milliseconds:
#define HITTEST_CACHE_LIFETIME_MS 50
// Times attached to messages wrap when they overflow
static const DWORD kEventTimeRange = std::numeric_limits<DWORD>::max();
static const DWORD kEventTimeHalfRange = kEventTimeRange / 2;
/**************************************************************
**************************************************************
**
** BLOCK: nsIWidget impl.
**
** nsIWidget interface implementation, broken down into
** sections.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: nsWindow construction and destruction
*
**************************************************************/
nsWindow::nsWindow() : nsWindowBase()
{
mIconSmall = nullptr;
mIconBig = nullptr;
mWnd = nullptr;
mPaintDC = nullptr;
mCompositeDC = nullptr;
mPrevWndProc = nullptr;
mNativeDragTarget = nullptr;
mInDtor = false;
mIsVisible = false;
mIsTopWidgetWindow = false;
mUnicodeWidget = true;
mDisplayPanFeedback = false;
mTouchWindow = false;
mCustomNonClient = false;
mHideChrome = false;
mFullscreenMode = false;
mMousePresent = false;
mDestroyCalled = false;
mHasTaskbarIconBeenCreated = false;
mMouseTransparent = false;
mPickerDisplayCount = 0;
mWindowType = eWindowType_child;
mBorderStyle = eBorderStyle_default;
mOldSizeMode = nsSizeMode_Normal;
mLastSizeMode = nsSizeMode_Normal;
mLastSize.width = 0;
mLastSize.height = 0;
mOldStyle = 0;
mOldExStyle = 0;
mPainting = 0;
mLastKeyboardLayout = 0;
mBlurSuppressLevel = 0;
mLastPaintEndTime = TimeStamp::Now();
mCachedHitTestPoint.x = 0;
mCachedHitTestPoint.y = 0;
mCachedHitTestTime = TimeStamp::Now();
mCachedHitTestResult = 0;
#ifdef MOZ_XUL
mTransparentSurface = nullptr;
mMemoryDC = nullptr;
mTransparencyMode = eTransparencyOpaque;
memset(&mGlassMargins, 0, sizeof mGlassMargins);
#endif
DWORD background = ::GetSysColor(COLOR_BTNFACE);
mBrush = ::CreateSolidBrush(NSRGB_2_COLOREF(background));
mTaskbarPreview = nullptr;
// Global initialization
if (!sInstanceCount) {
// Global app registration id for Win7 and up. See
// WinTaskbar.cpp for details.
mozilla::widget::WinTaskbar::RegisterAppUserModelID();
KeyboardLayout::GetInstance()->OnLayoutChange(::GetKeyboardLayout(0));
IMEHandler::Initialize();
if (SUCCEEDED(::OleInitialize(nullptr))) {
sIsOleInitialized = TRUE;
}
NS_ASSERTION(sIsOleInitialized, "***** OLE is not initialized!\n");
MouseScrollHandler::Initialize();
// Init titlebar button info for custom frames.
nsUXThemeData::InitTitlebarInfo();
// Init theme data
nsUXThemeData::UpdateNativeThemeInfo();
RedirectedKeyDownMessageManager::Forget();
Preferences::AddBoolVarCache(&gIsPointerEventsEnabled,
"dom.w3c_pointer_events.enabled",
gIsPointerEventsEnabled);
} // !sInstanceCount
mIdleService = nullptr;
sInstanceCount++;
}
nsWindow::~nsWindow()
{
mInDtor = true;
// If the widget was released without calling Destroy() then the native window still
// exists, and we need to destroy it. This will also result in a call to OnDestroy.
//
// XXX How could this happen???
if (nullptr != mWnd)
Destroy();
// Free app icon resources. This must happen after `OnDestroy` (see bug 708033).
if (mIconSmall)
::DestroyIcon(mIconSmall);
if (mIconBig)
::DestroyIcon(mIconBig);
sInstanceCount--;
// Global shutdown
if (sInstanceCount == 0) {
IMEHandler::Terminate();
NS_IF_RELEASE(sCursorImgContainer);
if (sIsOleInitialized) {
::OleFlushClipboard();
::OleUninitialize();
sIsOleInitialized = FALSE;
}
}
NS_IF_RELEASE(mNativeDragTarget);
}
NS_IMPL_ISUPPORTS_INHERITED0(nsWindow, nsBaseWidget)
/**************************************************************
*
* SECTION: nsIWidget::Create, nsIWidget::Destroy
*
* Creating and destroying windows for this widget.
*
**************************************************************/
// Allow Derived classes to modify the height that is passed
// when the window is created or resized.
int32_t nsWindow::GetHeight(int32_t aProposedHeight)
{
return aProposedHeight;
}
// Create the proper widget
nsresult
nsWindow::Create(nsIWidget *aParent,
nsNativeWidget aNativeParent,
const nsIntRect &aRect,
nsDeviceContext *aContext,
nsWidgetInitData *aInitData)
{
nsWidgetInitData defaultInitData;
if (!aInitData)
aInitData = &defaultInitData;
mUnicodeWidget = aInitData->mUnicode;
nsIWidget *baseParent = aInitData->mWindowType == eWindowType_dialog ||
aInitData->mWindowType == eWindowType_toplevel ||
aInitData->mWindowType == eWindowType_invisible ?
nullptr : aParent;
mIsTopWidgetWindow = (nullptr == baseParent);
mBounds = aRect;
// Ensure that the toolkit is created.
nsToolkit::GetToolkit();
BaseCreate(baseParent, aRect, aContext, aInitData);
HWND parent;
if (aParent) { // has a nsIWidget parent
parent = aParent ? (HWND)aParent->GetNativeData(NS_NATIVE_WINDOW) : nullptr;
mParent = aParent;
} else { // has a nsNative parent
parent = (HWND)aNativeParent;
mParent = aNativeParent ?
WinUtils::GetNSWindowPtr((HWND)aNativeParent) : nullptr;
}
mIsRTL = aInitData->mRTL;
DWORD style = WindowStyle();
DWORD extendedStyle = WindowExStyle();
if (mWindowType == eWindowType_popup) {
if (!aParent) {
parent = nullptr;
}
if (IsVistaOrLater() && !IsWin8OrLater() &&
HasBogusPopupsDropShadowOnMultiMonitor()) {
extendedStyle |= WS_EX_COMPOSITED;
}
if (aInitData->mMouseTransparent) {
// This flag makes the window transparent to mouse events
mMouseTransparent = true;
extendedStyle |= WS_EX_TRANSPARENT;
}
} else if (mWindowType == eWindowType_invisible) {
// Make sure CreateWindowEx succeeds at creating a toplevel window
style &= ~0x40000000; // WS_CHILDWINDOW
} else {
// See if the caller wants to explictly set clip children and clip siblings
if (aInitData->clipChildren) {
style |= WS_CLIPCHILDREN;
} else {
style &= ~WS_CLIPCHILDREN;
}
if (aInitData->clipSiblings) {
style |= WS_CLIPSIBLINGS;
}
}
nsAutoString className;
if (aInitData->mDropShadow) {
GetWindowPopupClass(className);
} else {
GetWindowClass(className);
}
// Plugins are created in the disabled state so that they can't
// steal focus away from our main window. This is especially
// important if the plugin has loaded in a background tab.
if(aInitData->mWindowType == eWindowType_plugin) {
style |= WS_DISABLED;
}
mWnd = ::CreateWindowExW(extendedStyle,
className.get(),
L"",
style,
aRect.x,
aRect.y,
aRect.width,
GetHeight(aRect.height),
parent,
nullptr,
nsToolkit::mDllInstance,
nullptr);
if (!mWnd) {
NS_WARNING("nsWindow CreateWindowEx failed.");
return NS_ERROR_FAILURE;
}
if (mIsRTL && WinUtils::dwmSetWindowAttributePtr) {
DWORD dwAttribute = TRUE;
WinUtils::dwmSetWindowAttributePtr(mWnd, DWMWA_NONCLIENT_RTL_LAYOUT, &dwAttribute, sizeof dwAttribute);
}
if (mWindowType != eWindowType_plugin &&
mWindowType != eWindowType_invisible &&
MouseScrollHandler::Device::IsFakeScrollableWindowNeeded()) {
// Ugly Thinkpad Driver Hack (Bugs 507222 and 594977)
//
// We create two zero-sized windows as descendants of the top-level window,
// like so:
//
// Top-level window (MozillaWindowClass)
// FAKETRACKPOINTSCROLLCONTAINER (MozillaWindowClass)
// FAKETRACKPOINTSCROLLABLE (MozillaWindowClass)
//
// We need to have the middle window, otherwise the Trackpoint driver
// will fail to deliver scroll messages. WM_MOUSEWHEEL messages are
// sent to the FAKETRACKPOINTSCROLLABLE, which then propagate up the
// window hierarchy until they are handled by nsWindow::WindowProc.
// WM_HSCROLL messages are also sent to the FAKETRACKPOINTSCROLLABLE,
// but these do not propagate automatically, so we have the window
// procedure pretend that they were dispatched to the top-level window
// instead.
//
// The FAKETRACKPOINTSCROLLABLE needs to have the specific window styles it
// is given below so that it catches the Trackpoint driver's heuristics.
HWND scrollContainerWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLCONTAINER",
WS_CHILD | WS_VISIBLE,
0, 0, 0, 0, mWnd, nullptr, nsToolkit::mDllInstance, nullptr);
HWND scrollableWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLABLE",
WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_TABSTOP | 0x30,
0, 0, 0, 0, scrollContainerWnd, nullptr, nsToolkit::mDllInstance,
nullptr);
// Give the FAKETRACKPOINTSCROLLABLE window a specific ID so that
// WindowProcInternal can distinguish it from the top-level window
// easily.
::SetWindowLongPtrW(scrollableWnd, GWLP_ID, eFakeTrackPointScrollableID);
// Make FAKETRACKPOINTSCROLLABLE use nsWindow::WindowProc, and store the
// old window procedure in its "user data".
WNDPROC oldWndProc;
if (mUnicodeWidget)
oldWndProc = (WNDPROC)::SetWindowLongPtrW(scrollableWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
else
oldWndProc = (WNDPROC)::SetWindowLongPtrA(scrollableWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
::SetWindowLongPtrW(scrollableWnd, GWLP_USERDATA, (LONG_PTR)oldWndProc);
}
SubclassWindow(TRUE);
// Starting with Windows XP, a process always runs within a terminal services
// session. In order to play nicely with RDP, fast user switching, and the
// lock screen, we should be handling WM_WTSSESSION_CHANGE. We must register
// our HWND in order to receive this message.
DebugOnly<BOOL> wtsRegistered = ::WTSRegisterSessionNotification(mWnd,
NOTIFY_FOR_THIS_SESSION);
NS_ASSERTION(wtsRegistered, "WTSRegisterSessionNotification failed!\n");
IMEHandler::InitInputContext(this, mInputContext);
// If the internal variable set by the config.trim_on_minimize pref has not
// been initialized, and if this is the hidden window (conveniently created
// before any visible windows, and after the profile has been initialized),
// do some initialization work.
if (sTrimOnMinimize == 2 && mWindowType == eWindowType_invisible) {
// Our internal trim prevention logic is effective on 2K/XP at maintaining
// the working set when windows are minimized, but on Vista and up it has
// little to no effect. Since this feature has been the source of numerous
// bugs over the years, disable it (sTrimOnMinimize=1) on Vista and up.
sTrimOnMinimize =
Preferences::GetBool("config.trim_on_minimize",
IsVistaOrLater() ? 1 : 0);
sSwitchKeyboardLayout =
Preferences::GetBool("intl.keyboard.per_window_layout", false);
}
// Query for command button metric data for rendering the titlebar. We
// only do this once on the first window.
if (mWindowType == eWindowType_toplevel &&
(!nsUXThemeData::sTitlebarInfoPopulatedThemed ||
!nsUXThemeData::sTitlebarInfoPopulatedAero)) {
nsUXThemeData::UpdateTitlebarInfo(mWnd);
}
return NS_OK;
}
// Close this nsWindow
NS_METHOD nsWindow::Destroy()
{
// WM_DESTROY has already fired, avoid calling it twice
if (mOnDestroyCalled)
return NS_OK;
// Don't destroy windows that have file pickers open, we'll tear these down
// later once the picker is closed.
mDestroyCalled = true;
if (mPickerDisplayCount)
return NS_OK;
// During the destruction of all of our children, make sure we don't get deleted.
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
/**
* On windows the LayerManagerOGL destructor wants the widget to be around for
* cleanup. It also would like to have the HWND intact, so we nullptr it here.
*/
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nullptr;
/* We should clear our cached resources now and not wait for the GC to
* delete the nsWindow. */
ClearCachedResources();
// The DestroyWindow function destroys the specified window. The function sends WM_DESTROY
// and WM_NCDESTROY messages to the window to deactivate it and remove the keyboard focus
// from it. The function also destroys the window's menu, flushes the thread message queue,
// destroys timers, removes clipboard ownership, and breaks the clipboard viewer chain (if
// the window is at the top of the viewer chain).
//
// If the specified window is a parent or owner window, DestroyWindow automatically destroys
// the associated child or owned windows when it destroys the parent or owner window. The
// function first destroys child or owned windows, and then it destroys the parent or owner
// window.
VERIFY(::DestroyWindow(mWnd));
// Our windows can be subclassed which may prevent us receiving WM_DESTROY. If OnDestroy()
// didn't get called, call it now.
if (false == mOnDestroyCalled) {
MSGResult msgResult;
mWindowHook.Notify(mWnd, WM_DESTROY, 0, 0, msgResult);
OnDestroy();
}
return NS_OK;
}
/**************************************************************
*
* SECTION: Window class utilities
*
* Utilities for calculating the proper window class name for
* Create window.
*
**************************************************************/
void nsWindow::RegisterWindowClass(const nsString& aClassName, UINT aExtraStyle,
LPWSTR aIconID)
{
WNDCLASSW wc;
if (::GetClassInfoW(nsToolkit::mDllInstance, aClassName.get(), &wc)) {
// already registered
return;
}
wc.style = CS_DBLCLKS | aExtraStyle;
wc.lpfnWndProc = ::DefWindowProcW;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = nsToolkit::mDllInstance;
wc.hIcon = aIconID ? ::LoadIconW(::GetModuleHandleW(nullptr), aIconID) : nullptr;
wc.hCursor = nullptr;
wc.hbrBackground = mBrush;
wc.lpszMenuName = nullptr;
wc.lpszClassName = aClassName.get();
if (!::RegisterClassW(&wc)) {
// For older versions of Win32 (i.e., not XP), the registration may
// fail with aExtraStyle, so we have to re-register without it.
wc.style = CS_DBLCLKS;
::RegisterClassW(&wc);
}
}
static LPWSTR const gStockApplicationIcon = MAKEINTRESOURCEW(32512);
// Return the proper window class for everything except popups.
void nsWindow::GetWindowClass(nsString& aWindowClass)
{
switch (mWindowType) {
case eWindowType_invisible:
aWindowClass.AssignLiteral(kClassNameHidden);
RegisterWindowClass(aWindowClass, 0, gStockApplicationIcon);
break;
case eWindowType_dialog:
aWindowClass.AssignLiteral(kClassNameDialog);
RegisterWindowClass(aWindowClass, 0, 0);
break;
default:
GetMainWindowClass(aWindowClass);
RegisterWindowClass(aWindowClass, 0, gStockApplicationIcon);
break;
}
}
// Return the proper popup window class
void nsWindow::GetWindowPopupClass(nsString& aWindowClass)
{
aWindowClass.AssignLiteral(kClassNameDropShadow);
RegisterWindowClass(aWindowClass, CS_XP_DROPSHADOW, gStockApplicationIcon);
}
/**************************************************************
*
* SECTION: Window styles utilities
*
* Return the proper windows styles and extended styles.
*
**************************************************************/
// Return nsWindow styles
DWORD nsWindow::WindowStyle()
{
DWORD style;
switch (mWindowType) {
case eWindowType_plugin:
case eWindowType_child:
style = WS_OVERLAPPED;
break;
case eWindowType_dialog:
style = WS_OVERLAPPED | WS_BORDER | WS_DLGFRAME | WS_SYSMENU | DS_3DLOOK |
DS_MODALFRAME | WS_CLIPCHILDREN;
if (mBorderStyle != eBorderStyle_default)
style |= WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
break;
case eWindowType_popup:
style = WS_POPUP;
if (!HasGlass()) {
style |= WS_OVERLAPPED;
}
break;
default:
NS_ERROR("unknown border style");
// fall through
case eWindowType_toplevel:
case eWindowType_invisible:
style = WS_OVERLAPPED | WS_BORDER | WS_DLGFRAME | WS_SYSMENU |
WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_CLIPCHILDREN;
break;
}
if (mBorderStyle != eBorderStyle_default && mBorderStyle != eBorderStyle_all) {
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_border))
style &= ~WS_BORDER;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_title)) {
style &= ~WS_DLGFRAME;
style |= WS_POPUP;
style &= ~WS_CHILD;
}
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_close))
style &= ~0;
// XXX The close box can only be removed by changing the window class,
// as far as I know --- roc+moz@cs.cmu.edu
if (mBorderStyle == eBorderStyle_none ||
!(mBorderStyle & (eBorderStyle_menu | eBorderStyle_close)))
style &= ~WS_SYSMENU;
// Looks like getting rid of the system menu also does away with the
// close box. So, we only get rid of the system menu if you want neither it
// nor the close box. How does the Windows "Dialog" window class get just
// closebox and no sysmenu? Who knows.
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_resizeh))
style &= ~WS_THICKFRAME;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_minimize))
style &= ~WS_MINIMIZEBOX;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_maximize))
style &= ~WS_MAXIMIZEBOX;
if (IsPopupWithTitleBar()) {
style |= WS_CAPTION;
if (mBorderStyle & eBorderStyle_close) {
style |= WS_SYSMENU;
}
}
}
VERIFY_WINDOW_STYLE(style);
return style;
}
// Return nsWindow extended styles
DWORD nsWindow::WindowExStyle()
{
switch (mWindowType)
{
case eWindowType_plugin:
case eWindowType_child:
return 0;
case eWindowType_dialog:
return WS_EX_WINDOWEDGE | WS_EX_DLGMODALFRAME;
case eWindowType_popup:
{
DWORD extendedStyle = WS_EX_TOOLWINDOW;
if (mPopupLevel == ePopupLevelTop)
extendedStyle |= WS_EX_TOPMOST;
return extendedStyle;
}
default:
NS_ERROR("unknown border style");
// fall through
case eWindowType_toplevel:
case eWindowType_invisible:
return WS_EX_WINDOWEDGE;
}
}
/**************************************************************
*
* SECTION: Window subclassing utilities
*
* Set or clear window subclasses on native windows. Used in
* Create and Destroy.
*
**************************************************************/
// Subclass (or remove the subclass from) this component's nsWindow
void nsWindow::SubclassWindow(BOOL bState)
{
if (bState) {
if (!mWnd || !IsWindow(mWnd)) {
NS_ERROR("Invalid window handle");
}
if (mUnicodeWidget) {
mPrevWndProc =
reinterpret_cast<WNDPROC>(
SetWindowLongPtrW(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(nsWindow::WindowProc)));
} else {
mPrevWndProc =
reinterpret_cast<WNDPROC>(
SetWindowLongPtrA(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(nsWindow::WindowProc)));
}
NS_ASSERTION(mPrevWndProc, "Null standard window procedure");
// connect the this pointer to the nsWindow handle
WinUtils::SetNSWindowBasePtr(mWnd, this);
} else {
if (IsWindow(mWnd)) {
if (mUnicodeWidget) {
SetWindowLongPtrW(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(mPrevWndProc));
} else {
SetWindowLongPtrA(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(mPrevWndProc));
}
}
WinUtils::SetNSWindowBasePtr(mWnd, nullptr);
mPrevWndProc = nullptr;
}
}
/**************************************************************
*
* SECTION: nsIWidget::SetParent, nsIWidget::GetParent
*
* Set or clear the parent widgets using window properties, and
* handles calculating native parent handles.
*
**************************************************************/
// Get and set parent widgets
NS_IMETHODIMP nsWindow::SetParent(nsIWidget *aNewParent)
{
mParent = aNewParent;
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
nsIWidget* parent = GetParent();
if (parent) {
parent->RemoveChild(this);
}
if (aNewParent) {
ReparentNativeWidget(aNewParent);
aNewParent->AddChild(this);
return NS_OK;
}
if (mWnd) {
// If we have no parent, SetParent should return the desktop.
VERIFY(::SetParent(mWnd, nullptr));
}
return NS_OK;
}
NS_IMETHODIMP
nsWindow::ReparentNativeWidget(nsIWidget* aNewParent)
{
NS_PRECONDITION(aNewParent, "");
mParent = aNewParent;
if (mWindowType == eWindowType_popup) {
return NS_OK;
}
HWND newParent = (HWND)aNewParent->GetNativeData(NS_NATIVE_WINDOW);
NS_ASSERTION(newParent, "Parent widget has a null native window handle");
if (newParent && mWnd) {
::SetParent(mWnd, newParent);
}
return NS_OK;
}
nsIWidget* nsWindow::GetParent(void)
{
return GetParentWindow(false);
}
float nsWindow::GetDPI()
{
HDC dc = ::GetDC(mWnd);
if (!dc)
return 96.0f;
double heightInches = ::GetDeviceCaps(dc, VERTSIZE)/MM_PER_INCH_FLOAT;