forked from aseprite/aseprite
-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathmanager.cpp
2338 lines (1977 loc) · 65.8 KB
/
manager.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
// Aseprite UI Library
// Copyright (C) 2018-2024 Igara Studio S.A.
// Copyright (C) 2001-2018 David Capello
//
// This file is released under the terms of the MIT license.
// Read LICENSE.txt for more information.
// #define REPORT_MESSAGES 1
// #define REPORT_MOUSE_MESSAGES 1
// #define REPORT_PAINT_MESSAGES 1
// #define REPORT_TIMER_MESSAGES 1
// #define REPORT_FOCUS_MOVEMENT 1
// #define DEBUG_PAINT_MESSAGES 1
// #define LIMIT_DISPATCH_TIME 1
#define GARBAGE_TRACE(...) // TRACE(__VA_ARGS__)
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ui/manager.h"
#include "base/concurrent_queue.h"
#include "base/scoped_value.h"
#include "base/thread.h"
#include "base/time.h"
#include "fmt/format.h"
#include "os/event.h"
#include "os/event_queue.h"
#include "os/surface.h"
#include "os/system.h"
#include "os/window.h"
#include "os/window_spec.h"
#include "ui/intern.h"
#include "ui/ui.h"
#include <algorithm>
#include <limits>
#include <list>
#include <memory>
#include <thread>
#include <utility>
#include <vector>
#if defined(_WIN32) && defined(DEBUG_PAINT_MESSAGES)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef min
#undef max
#endif
namespace ui {
namespace {
// The redraw state is used to avoid drawing the manager when a window
// has been just closed by the user, so we delay the redrawing (the
// kPaintMessages generation) for the next generateMessages() round.
enum class RedrawState {
Normal,
AWindowHasJustBeenClosed,
RedrawDelayed,
ClosingApp,
};
RedrawState redrawState = RedrawState::Normal;
} // anonymous namespace
static const int NFILTERS = (int)(kFirstRegisteredMessage + 1);
struct Filter {
int message;
Widget* widget;
Filter(int message, Widget* widget) : message(message), widget(widget) {}
};
typedef std::list<Message*> Messages;
typedef std::list<Filter*> Filters;
Manager* Manager::m_defaultManager = nullptr;
static std::thread::id manager_thread;
static WidgetsList mouse_widgets_list; // List of widgets to send mouse events
static Messages msg_queue; // Messages queue
static Messages used_msg_queue; // Messages queue
static base::concurrent_queue<Message*> concurrent_msg_queue;
static Filters msg_filters[NFILTERS]; // Filters for every enqueued message
static int filter_locks = 0;
// Current display with the mouse, used to avoid processing a
// os::Event::MouseLeave of the non-current display/window as when we
// move the mouse between two windows we can receive:
//
// 1. A os::Event::MouseEnter of the new window
// 2. A os::Event::MouseLeave of the old window
//
// Instead of the MouseLeave event of the old window first.
static Display* mouse_display = nullptr;
static Widget* focus_widget; // The widget with the focus
static Widget* mouse_widget; // The widget with the mouse
static Widget* capture_widget; // The widget that captures the mouse
static bool first_time = true; // true when we don't enter in poll yet
// Don't adjust window positions automatically when it's false. Used
// when Screen/UI scaling is changed to avoid adjusting windows as
// when the os::Display is resized by the user.
static bool auto_window_adjustment = true;
// Keyboard focus movement stuff
inline bool does_accept_focus(Widget* widget)
{
return ((((widget)->flags() & (FOCUS_STOP | DISABLED | HIDDEN | DECORATIVE)) == FOCUS_STOP) &&
((widget)->isVisible()));
}
static int count_widgets_accept_focus(Widget* widget);
static bool child_accept_focus(Widget* widget, bool first);
static Widget* next_widget(Widget* widget);
static int cmp_left(Widget* widget, int x, int y);
static int cmp_right(Widget* widget, int x, int y);
static int cmp_up(Widget* widget, int x, int y);
static int cmp_down(Widget* widget, int x, int y);
namespace {
class LockFilters {
public:
LockFilters() { ++filter_locks; }
~LockFilters()
{
ASSERT(filter_locks > 0);
--filter_locks;
if (filter_locks == 0) {
// Clear empty filters
for (Filters& msg_filter : msg_filters) {
for (auto it = msg_filter.begin(); it != msg_filter.end();) {
Filter* filter = *it;
if (filter->widget == nullptr) {
delete filter;
it = msg_filter.erase(it);
}
else {
++it;
}
}
}
}
}
};
os::Hit handle_native_hittest(os::Window* osWindow, const gfx::Point& pos)
{
Display* display = Manager::getDisplayFromNativeWindow(osWindow);
if (display) {
auto window = static_cast<Window*>(display->containedWidget());
switch (window->hitTest(pos)) {
case HitTestNowhere: return os::Hit::Content;
case HitTestCaption: return os::Hit::TitleBar;
case HitTestClient: return os::Hit::Content;
case HitTestBorderNW: return os::Hit::TopLeft;
case HitTestBorderN: return os::Hit::Top;
case HitTestBorderNE: return os::Hit::TopRight;
case HitTestBorderE: return os::Hit::Right;
case HitTestBorderSE: return os::Hit::BottomRight;
case HitTestBorderS: return os::Hit::Bottom;
case HitTestBorderSW: return os::Hit::BottomLeft;
case HitTestBorderW: return os::Hit::Left;
}
}
return os::Hit::None;
}
} // anonymous namespace
// static
bool Manager::widgetAssociatedToManager(Widget* widget)
{
return (focus_widget == widget || mouse_widget == widget || capture_widget == widget ||
std::find(mouse_widgets_list.begin(), mouse_widgets_list.end(), widget) !=
mouse_widgets_list.end());
}
Manager::Manager(const os::WindowRef& nativeWindow)
: Widget(kManagerWidget)
, m_display(nullptr, nativeWindow, this)
, m_eventQueue(os::instance()->eventQueue())
, m_lockedWindow(nullptr)
, m_mouseButton(kButtonNone)
{
// The native window can be nullptr when running tests
if (nativeWindow)
nativeWindow->setUserData(&m_display);
ASSERT(manager_thread == std::thread::id());
manager_thread = std::this_thread::get_id();
if (!m_defaultManager) {
// Empty lists
ASSERT(msg_queue.empty());
mouse_widgets_list.clear();
// Reset variables
focus_widget = nullptr;
mouse_widget = nullptr;
capture_widget = nullptr;
}
setBounds(m_display.bounds());
setVisible(true);
// Default manager is the first one (and is always visible).
if (!m_defaultManager)
m_defaultManager = this;
// TODO check if this is needed
onNewDisplayConfiguration(&m_display);
}
Manager::~Manager()
{
ASSERT(manager_thread == std::this_thread::get_id());
// There are some messages in queue? Dispatch everything.
dispatchMessages();
collectGarbage();
// Finish the main manager.
if (m_defaultManager == this) {
// No more cursor
set_mouse_cursor(kNoCursor);
// Check timers & filters
#ifdef _DEBUG
if (get_app_state() != AppState::kClosingWithException) {
ASSERT(!Timer::haveTimers());
for (Filters& msg_filter : msg_filters)
ASSERT(msg_filter.empty());
}
ASSERT(msg_queue.empty());
#endif
// No more default manager
m_defaultManager = nullptr;
// Shutdown system
mouse_widgets_list.clear();
}
}
// static
Display* Manager::getDisplayFromNativeWindow(os::Window* window)
{
if (window)
return window->userData<Display>();
else
return nullptr;
}
void Manager::run()
{
MessageLoop loop(this);
if (first_time) {
first_time = false;
invalidate();
set_mouse_cursor(kArrowCursor);
}
while (!children().empty())
loop.pumpMessages();
}
void Manager::flipAllDisplays()
{
OverlayManager* overlays = OverlayManager::instance();
update_cursor_overlay();
// Draw overlays.
overlays->drawOverlays();
m_display.flipDisplay();
if (get_multiple_displays()) {
for (auto child : children()) {
auto window = static_cast<Window*>(child);
if (window->ownDisplay())
window->display()->flipDisplay();
}
}
}
void Manager::updateAllDisplays(int scale, bool gpu)
{
os::Window* nativeWindow = m_display.nativeWindow();
nativeWindow->setScale(scale);
nativeWindow->setGpuAcceleration(gpu);
if (get_multiple_displays()) {
for (auto child : children()) {
auto window = static_cast<Window*>(child);
if (window->ownDisplay()) {
Display* display = static_cast<Window*>(child)->display();
display->nativeWindow()->setScale(scale);
display->nativeWindow()->setGpuAcceleration(gpu);
onNewDisplayConfiguration(display);
}
}
}
onNewDisplayConfiguration(&m_display);
}
bool Manager::generateMessages()
{
ASSERT(manager_thread == std::this_thread::get_id());
// First check: there are windows to manage?
if (children().empty())
return false;
// Generate messages from other threads
if (!concurrent_msg_queue.empty()) {
Message* msg = nullptr;
while (concurrent_msg_queue.try_pop(msg))
msg_queue.push_back(msg);
}
// Generate messages from OS input
generateMessagesFromOSEvents();
// Generate messages for timers
Timer::pollTimers();
// Returns true if we have to dispatch messages (if the redraw was
// delayed, we have to pump messages because there is where paint
// messages are flushed)
if (!msg_queue.empty() || redrawState != RedrawState::Normal)
return true;
else
return false;
}
void Manager::generateSetCursorMessage(Display* display,
const gfx::Point& mousePos,
KeyModifiers modifiers,
PointerType pointerType)
{
if (get_mouse_cursor() == kOutsideDisplay)
return;
Widget* dst = (capture_widget ? capture_widget : mouse_widget);
if (dst)
enqueueMessage(newMouseMessage(kSetCursorMessage,
display,
dst,
mousePos,
pointerType,
m_mouseButton,
modifiers));
else
set_mouse_cursor(kArrowCursor);
}
static MouseButton mouse_button_from_os_to_ui(const os::Event& osEvent)
{
static_assert((int)os::Event::NoneButton == (int)ui::kButtonNone &&
(int)os::Event::LeftButton == (int)ui::kButtonLeft &&
(int)os::Event::RightButton == (int)ui::kButtonRight &&
(int)os::Event::MiddleButton == (int)ui::kButtonMiddle &&
(int)os::Event::X1Button == (int)ui::kButtonX1 &&
(int)os::Event::X2Button == (int)ui::kButtonX2,
"Mouse button constants do not match");
return (MouseButton)osEvent.button();
}
void Manager::generateMessagesFromOSEvents()
{
ASSERT(manager_thread == std::this_thread::get_id());
os::Event lastMouseMoveEvent;
// Events from laf-os
os::Event osEvent;
for (;;) {
// Calculate how much time we can wait for the next message in the
// event queue.
double timeout = 0.0;
if (msg_queue.empty() && redrawState == RedrawState::Normal) {
if (!Timer::getNextTimeout(timeout))
timeout = os::EventQueue::kWithoutTimeout;
}
if (timeout == os::EventQueue::kWithoutTimeout && used_msg_queue.empty())
collectGarbage();
#if _DEBUG
else if (!m_garbage.empty()) {
GARBAGE_TRACE("collectGarbage() wasn't called #objects=%d"
" (msg_queue=%d used_msg_queue=%d redrawState=%d timeout=%.16g)\n",
int(m_garbage.size()),
msg_queue.size(),
used_msg_queue.size(),
int(redrawState),
timeout);
}
#endif
m_eventQueue->getEvent(osEvent, timeout);
if (osEvent.type() == os::Event::None)
break;
Display* display = getDisplayFromNativeWindow(osEvent.window().get());
if (!display)
display = this->display();
switch (osEvent.type()) {
case os::Event::CloseApp: {
Message* msg = new Message(kCloseDisplayMessage);
msg->setDisplay(display);
msg->setRecipient(this);
msg->setPropagateToChildren(true);
enqueueMessage(msg);
break;
}
case os::Event::CloseWindow: {
Message* msg = new Message(kCloseDisplayMessage);
msg->setDisplay(display);
msg->setRecipient(this);
msg->setPropagateToChildren(true);
enqueueMessage(msg);
break;
}
case os::Event::ResizeWindow: {
Message* msg = new Message(kResizeDisplayMessage);
msg->setDisplay(display);
msg->setRecipient(this);
msg->setPropagateToChildren(false);
enqueueMessage(msg);
break;
}
case os::Event::DropFiles: {
Message* msg = new DropFilesMessage(osEvent.files());
msg->setDisplay(display);
msg->setRecipient(this);
enqueueMessage(msg);
break;
}
case os::Event::KeyDown:
case os::Event::KeyUp: {
Message* msg = new KeyMessage(
(osEvent.type() == os::Event::KeyDown ? kKeyDownMessage : kKeyUpMessage),
osEvent.scancode(),
osEvent.modifiers(),
osEvent.unicodeChar(),
osEvent.repeat());
msg->setDisplay(display);
if (osEvent.isDeadKey())
static_cast<KeyMessage*>(msg)->setDeadKey(true);
broadcastKeyMsg(msg);
enqueueMessage(msg);
break;
}
case os::Event::MouseEnter: {
if (get_multiple_displays()) {
if (osEvent.window()) {
ASSERT(display != nullptr);
_internal_set_mouse_display(display);
}
}
set_mouse_cursor(kArrowCursor);
mouse_display = display;
lastMouseMoveEvent = osEvent;
break;
}
case os::Event::MouseLeave: {
if (mouse_display == display) {
set_mouse_cursor(kOutsideDisplay);
setMouse(nullptr);
_internal_no_mouse_position();
mouse_display = nullptr;
}
// To avoid calling kSetCursorMessage when the mouse leaves
// the window.
lastMouseMoveEvent = os::Event();
break;
}
case os::Event::MouseMove: {
handleMouseMove(display,
osEvent.position(),
osEvent.modifiers(),
osEvent.pointerType(),
osEvent.pressure());
lastMouseMoveEvent = osEvent;
break;
}
case os::Event::MouseDown: {
handleMouseDown(display,
osEvent.position(),
m_mouseButton = mouse_button_from_os_to_ui(osEvent),
osEvent.modifiers(),
osEvent.pointerType(),
osEvent.pressure());
break;
}
case os::Event::MouseUp: {
handleMouseUp(display,
osEvent.position(),
mouse_button_from_os_to_ui(osEvent),
osEvent.modifiers(),
osEvent.pointerType());
m_mouseButton = kButtonNone;
break;
}
case os::Event::MouseDoubleClick: {
handleMouseDoubleClick(display,
osEvent.position(),
m_mouseButton = mouse_button_from_os_to_ui(osEvent),
osEvent.modifiers(),
osEvent.pointerType(),
osEvent.pressure());
break;
}
case os::Event::MouseWheel: {
handleMouseWheel(display,
osEvent.position(),
osEvent.modifiers(),
osEvent.pointerType(),
osEvent.wheelDelta(),
osEvent.preciseWheel());
break;
}
case os::Event::TouchMagnify: {
handleTouchMagnify(display,
osEvent.position(),
osEvent.modifiers(),
osEvent.magnification());
break;
}
case os::Event::Callback: {
// Call from the UI thread
osEvent.execCallback();
break;
}
}
}
// Generate just one kSetCursorMessage for the last mouse position
if (lastMouseMoveEvent.type() != os::Event::None) {
osEvent = lastMouseMoveEvent;
Display* display = getDisplayFromNativeWindow(osEvent.window().get());
if (!display)
display = this->display();
generateSetCursorMessage(display,
osEvent.position(),
osEvent.modifiers(),
osEvent.pointerType());
}
}
void Manager::handleMouseMove(Display* display,
const gfx::Point& mousePos,
const KeyModifiers modifiers,
const PointerType pointerType,
const float pressure)
{
updateMouseWidgets(mousePos, display);
// Send the mouse movement message
Widget* dst = (capture_widget ? capture_widget : mouse_widget);
enqueueMessage(newMouseMessage(kMouseMoveMessage,
display,
dst,
mousePos,
pointerType,
m_mouseButton,
modifiers,
gfx::Point(0, 0),
false,
pressure));
}
void Manager::handleMouseDown(Display* display,
const gfx::Point& mousePos,
MouseButton mouseButton,
KeyModifiers modifiers,
PointerType pointerType,
const float pressure)
{
// Returns false in case that we click another Display (os::Window)
// that is not the current running top-most foreground window.
if (!handleWindowZOrder())
return;
enqueueMessage(newMouseMessage(kMouseDownMessage,
display,
(capture_widget ? capture_widget : mouse_widget),
mousePos,
pointerType,
mouseButton,
modifiers,
gfx::Point(0, 0),
false,
pressure));
}
void Manager::handleMouseUp(Display* display,
const gfx::Point& mousePos,
MouseButton mouseButton,
KeyModifiers modifiers,
PointerType pointerType)
{
enqueueMessage(newMouseMessage(kMouseUpMessage,
display,
(capture_widget ? capture_widget : mouse_widget),
mousePos,
pointerType,
mouseButton,
modifiers));
}
void Manager::handleMouseDoubleClick(Display* display,
const gfx::Point& mousePos,
MouseButton mouseButton,
KeyModifiers modifiers,
PointerType pointerType,
const float pressure)
{
Widget* dst = (capture_widget ? capture_widget : mouse_widget);
if (dst) {
enqueueMessage(newMouseMessage(kDoubleClickMessage,
display,
dst,
mousePos,
pointerType,
mouseButton,
modifiers,
gfx::Point(0, 0),
false,
pressure));
}
}
void Manager::handleMouseWheel(Display* display,
const gfx::Point& mousePos,
KeyModifiers modifiers,
PointerType pointerType,
const gfx::Point& wheelDelta,
bool preciseWheel)
{
enqueueMessage(newMouseMessage(kMouseWheelMessage,
display,
(capture_widget ? capture_widget : mouse_widget),
mousePos,
pointerType,
m_mouseButton,
modifiers,
wheelDelta,
preciseWheel));
}
void Manager::handleTouchMagnify(Display* display,
const gfx::Point& mousePos,
const KeyModifiers modifiers,
const double magnification)
{
Widget* widget = (capture_widget ? capture_widget : mouse_widget);
if (widget) {
Message* msg = new TouchMessage(kTouchMagnifyMessage, modifiers, mousePos, magnification);
msg->setDisplay(display);
msg->setRecipient(widget);
enqueueMessage(msg);
}
}
// Handles Z order: Send the window to top (only when you click in a
// window that aren't the desktop).
//
// TODO code similar to Display::handleWindowZOrder()
bool Manager::handleWindowZOrder()
{
if (capture_widget || !mouse_widget)
return true;
// The clicked window
Window* window = mouse_widget->window();
Window* topWindow = getTopWindow();
if ((window) &&
// We cannot change Z-order of desktop windows
(!window->isDesktop()) &&
// We cannot change Z order of foreground windows because a
// foreground window can launch other background windows
// which should be kept on top of the foreground one.
(!window->isForeground()) &&
// If the window is not already the top window of the manager.
(window != topWindow)) {
// If there is already a top foreground window, cancel the z-order change
if (topWindow && topWindow->isForeground())
return false;
base::ScopedValue<Widget*> scoped(m_lockedWindow, window);
window->display()->handleWindowZOrder(window);
// Put it in the top of the list
removeChild(window);
if (window->isOnTop())
insertChild(0, window);
else {
int pos = (int)children().size();
for (auto it = children().rbegin(), end = children().rend(); it != end; ++it) {
if (static_cast<Window*>(*it)->isOnTop())
break;
--pos;
}
insertChild(pos, window);
}
if (!window->ownDisplay())
window->invalidate();
}
// Put the focus
setFocus(mouse_widget);
return true;
}
// If display is nullptr, mousePos is in screen coordinates, if not,
// it's relative to the display content rect.
void Manager::updateMouseWidgets(const gfx::Point& mousePos, Display* display)
{
gfx::Point screenPos;
if (display) {
screenPos = display->nativeWindow()->pointToScreen(mousePos);
display->updateLastMousePos(mousePos);
}
else {
screenPos = mousePos;
}
// Get the list of widgets to send mouse messages.
mouse_widgets_list.clear();
broadcastMouseMessage(screenPos, mouse_widgets_list);
// Get the widget under the mouse
Widget* widget = nullptr;
for (auto mouseWidget : mouse_widgets_list) {
if (get_multiple_displays()) {
if (display) {
if (display != mouseWidget->display()) {
widget = mouseWidget->display()->containedWidget()->pickFromScreenPos(screenPos);
}
else {
widget = mouseWidget->pick(mousePos);
}
}
else {
widget = mouseWidget->display()->containedWidget()->pickFromScreenPos(screenPos);
}
}
else {
if (display)
widget = mouseWidget->pick(mousePos);
else
widget = mouseWidget->pickFromScreenPos(screenPos);
}
if (widget) {
// Get the first ancestor of the picked widget that doesn't
// ignore mouse events.
while (widget && widget->hasFlags(IGNORE_MOUSE))
widget = widget->parent();
break;
}
}
// Fixup "mouse" flag
if (widget != mouse_widget) {
if (!widget) {
freeMouse();
}
else {
setMouse(widget);
}
}
}
void Manager::dispatchMessages()
{
// Send messages in the queue (mouse/key/timer/etc. events) This
// might change the state of widgets, etc. In case pumpQueue()
// returns a number greater than 0, it means that we've processed
// some messages, so we've to redraw the screen.
if (pumpQueue() > 0 || redrawState == RedrawState::RedrawDelayed) {
if (redrawState == RedrawState::ClosingApp) {
// Do nothing, we don't flush nor process paint messages
}
// If a window has just been closed with Manager::_closeWindow()
// after processing messages, we'll wait the next event generation
// to process painting events (so the manager doesn't lost the
// DIRTY flag right now).
else if (redrawState == RedrawState::AWindowHasJustBeenClosed) {
redrawState = RedrawState::RedrawDelayed;
}
else {
if (redrawState == RedrawState::RedrawDelayed)
redrawState = RedrawState::Normal;
// Generate and send just kPaintMessages with the latest UI state.
flushRedraw();
pumpQueue();
// Flip back-buffers to real displays.
flipAllDisplays();
}
}
}
void Manager::addToGarbage(Widget* widget)
{
ASSERT(widget);
m_garbage.push_back(widget);
}
void Manager::enqueueMessage(Message* msg)
{
ASSERT(msg);
if (is_ui_thread())
msg_queue.push_back(msg);
else
concurrent_msg_queue.push(msg);
}
Window* Manager::getTopWindow()
{
return static_cast<Window*>(UI_FIRST_WIDGET(children()));
}
Window* Manager::getDesktopWindow()
{
for (auto child : children()) {
Window* window = static_cast<Window*>(child);
if (window->isDesktop())
return window;
}
return nullptr;
}
Window* Manager::getForegroundWindow()
{
for (auto child : children()) {
Window* window = static_cast<Window*>(child);
if (window->isForeground() || window->isDesktop())
return window;
}
return nullptr;
}
Display* Manager::getForegroundDisplay()
{
if (get_multiple_displays()) {
Window* window = getForegroundWindow();
if (window)
return window->display();
}
return &m_display;
}
Widget* Manager::getFocus()
{
return focus_widget;
}
Widget* Manager::getMouse()
{
return mouse_widget;
}
Widget* Manager::getCapture()
{
return capture_widget;
}
void Manager::setFocus(Widget* widget)
{
if ((focus_widget != widget) &&
(!(widget) || (!(widget->hasFlags(DISABLED)) && !(widget->hasFlags(HIDDEN)) &&
!(widget->hasFlags(DECORATIVE)) && someParentIsFocusStop(widget)))) {
Widget* commonAncestor = findLowestCommonAncestor(focus_widget, widget);
// Fetch the focus
if (focus_widget && focus_widget != commonAncestor) {
auto msg = new Message(kFocusLeaveMessage);
msg->setRecipient(focus_widget);
msg->setPropagateToParent(true);
msg->setCommonAncestor(commonAncestor);
enqueueMessage(msg);
// Remove HAS_FOCUS from all hierarchy
auto a = focus_widget;
while (a && a != commonAncestor) {
a->disableFlags(HAS_FOCUS);
a = a->parent();
}
}
// Put the focus
focus_widget = widget;
if (widget) {
auto msg = new Message(kFocusEnterMessage);
msg->setRecipient(widget);
msg->setPropagateToParent(true);
msg->setCommonAncestor(commonAncestor);
enqueueMessage(msg);
// Add HAS_FOCUS to all hierarchy
auto a = focus_widget;
while (a && a != commonAncestor) {
if (a->hasFlags(FOCUS_STOP))
a->enableFlags(HAS_FOCUS);
a = a->parent();
}
}
}
}
void Manager::setMouse(Widget* widget)
{
#if REPORT_MOUSE_MESSAGES
TRACEARGS("Manager::setMouse ",
(widget ? typeid(*widget).name() : "null"),
(widget ? widget->id() : ""));
#endif
if (mouse_widget == widget)
return;
Widget* commonAncestor = findLowestCommonAncestor(mouse_widget, widget);
// Fetch the mouse
if (mouse_widget && mouse_widget != commonAncestor) {
auto msg = new Message(kMouseLeaveMessage);
msg->setRecipient(mouse_widget);
msg->setPropagateToParent(true);
msg->setCommonAncestor(commonAncestor);
enqueueMessage(msg);
// Remove HAS_MOUSE from all the hierarchy
auto a = mouse_widget;
while (a && a != commonAncestor) {
a->disableFlags(HAS_MOUSE);
a = a->parent();
}
}
// If the mouse is captured, we can just put the HAS_MOUSE flag in
// the captured widget (or in none).
if (capture_widget && capture_widget != widget) {
widget = nullptr;
}
// Put the mouse
mouse_widget = widget;
if (widget) {
Display* display = mouse_widget->display();
gfx::Point mousePos = display->nativeWindow()->pointFromScreen(get_mouse_position());
auto msg = newMouseMessage(kMouseEnterMessage,
display,