-
-
Notifications
You must be signed in to change notification settings - Fork 2.1k
/
rcore_web.c
1693 lines (1406 loc) · 70.8 KB
/
rcore_web.c
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
/**********************************************************************************************
*
* rcore_web - Functions to manage window, graphics device and inputs
*
* PLATFORM: WEB
* - HTML5 (WebAssembly)
*
* LIMITATIONS:
* - Limitation 01
* - Limitation 02
*
* POSSIBLE IMPROVEMENTS:
* - Replace glfw3 dependency by direct browser API calls (same as library_glfw3.js)
*
* ADDITIONAL NOTES:
* - TRACELOG() function is located in raylib [utils] module
*
* CONFIGURATION:
* #define RCORE_PLATFORM_CUSTOM_FLAG
* Custom flag for rcore on target platform -not used-
*
* DEPENDENCIES:
* - emscripten: Allow interaction between browser API and C
* - gestures: Gestures system for touch-ready devices (or simulated from mouse inputs)
*
*
* LICENSE: zlib/libpng
*
* Copyright (c) 2013-2024 Ramon Santamaria (@raysan5) and contributors
*
* This software is provided "as-is", without any express or implied warranty. In no event
* will the authors be held liable for any damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose, including commercial
* applications, and to alter it and redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not claim that you
* wrote the original software. If you use this software in a product, an acknowledgment
* in the product documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be misrepresented
* as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*
**********************************************************************************************/
#define GLFW_INCLUDE_NONE // Disable the standard OpenGL header inclusion on GLFW3
// NOTE: Already provided by rlgl implementation (on glad.h)
#include "GLFW/glfw3.h" // GLFW3: Windows, OpenGL context and Input management
#include <emscripten/emscripten.h> // Emscripten functionality for C
#include <emscripten/html5.h> // Emscripten HTML5 library
#include <sys/time.h> // Required for: timespec, nanosleep(), select() - POSIX
//----------------------------------------------------------------------------------
// Defines and Macros
//----------------------------------------------------------------------------------
// TODO: HACK: Added flag if not provided by GLFW when using external library
// Latest GLFW release (GLFW 3.3.8) does not implement this flag, it was added for 3.4.0-dev
#if !defined(GLFW_MOUSE_PASSTHROUGH)
#define GLFW_MOUSE_PASSTHROUGH 0x0002000D
#endif
#if (_POSIX_C_SOURCE < 199309L)
#undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 199309L // Required for: CLOCK_MONOTONIC if compiled with c99 without gnu ext.
#endif
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
typedef struct {
GLFWwindow *handle; // GLFW window handle (graphic device)
bool ourFullscreen; // Internal var to filter our handling of fullscreen vs the user handling of fullscreen
} PlatformData;
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
extern CoreData CORE; // Global CORE state context
static PlatformData platform = { 0 }; // Platform specific data
//----------------------------------------------------------------------------------
// Local Variables Definition
//----------------------------------------------------------------------------------
static const char cursorLUT[11][12] = {
"default", // 0 MOUSE_CURSOR_DEFAULT
"default", // 1 MOUSE_CURSOR_ARROW
"text", // 2 MOUSE_CURSOR_IBEAM
"crosshair", // 3 MOUSE_CURSOR_CROSSHAIR
"pointer", // 4 MOUSE_CURSOR_POINTING_HAND
"ew-resize", // 5 MOUSE_CURSOR_RESIZE_EW
"ns-resize", // 6 MOUSE_CURSOR_RESIZE_NS
"nwse-resize", // 7 MOUSE_CURSOR_RESIZE_NWSE
"nesw-resize", // 8 MOUSE_CURSOR_RESIZE_NESW
"move", // 9 MOUSE_CURSOR_RESIZE_ALL
"not-allowed" // 10 MOUSE_CURSOR_NOT_ALLOWED
};
//----------------------------------------------------------------------------------
// Module Internal Functions Declaration
//----------------------------------------------------------------------------------
int InitPlatform(void); // Initialize platform (graphics, inputs and more)
void ClosePlatform(void); // Close platform
// Error callback event
static void ErrorCallback(int error, const char *description); // GLFW3 Error Callback, runs on GLFW3 error
// Window callbacks events
static void WindowSizeCallback(GLFWwindow *window, int width, int height); // GLFW3 WindowSize Callback, runs when window is resized
static void WindowIconifyCallback(GLFWwindow *window, int iconified); // GLFW3 WindowIconify Callback, runs when window is minimized/restored
//static void WindowMaximizeCallback(GLFWwindow *window, int maximized); // GLFW3 Window Maximize Callback, runs when window is maximized
static void WindowFocusCallback(GLFWwindow *window, int focused); // GLFW3 WindowFocus Callback, runs when window get/lose focus
static void WindowDropCallback(GLFWwindow *window, int count, const char **paths); // GLFW3 Window Drop Callback, runs when drop files into window
static void WindowContentScaleCallback(GLFWwindow *window, float scalex, float scaley); // GLFW3 Window Content Scale Callback, runs when window changes scale
// Input callbacks events
static void KeyCallback(GLFWwindow *window, int key, int scancode, int action, int mods); // GLFW3 Keyboard Callback, runs on key pressed
static void CharCallback(GLFWwindow *window, unsigned int key); // GLFW3 Char Key Callback, runs on key pressed (get char value)
static void MouseButtonCallback(GLFWwindow *window, int button, int action, int mods); // GLFW3 Mouse Button Callback, runs on mouse button pressed
static void MouseCursorPosCallback(GLFWwindow *window, double x, double y); // GLFW3 Cursor Position Callback, runs on mouse move
static void MouseScrollCallback(GLFWwindow *window, double xoffset, double yoffset); // GLFW3 Srolling Callback, runs on mouse wheel
static void CursorEnterCallback(GLFWwindow *window, int enter); // GLFW3 Cursor Enter Callback, cursor enters client area
// Emscripten window callback events
static EM_BOOL EmscriptenFullscreenChangeCallback(int eventType, const EmscriptenFullscreenChangeEvent *event, void *userData);
static EM_BOOL EmscriptenWindowResizedCallback(int eventType, const EmscriptenUiEvent *event, void *userData);
static EM_BOOL EmscriptenResizeCallback(int eventType, const EmscriptenUiEvent *event, void *userData);
// Emscripten input callback events
static EM_BOOL EmscriptenMouseCallback(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData);
static EM_BOOL EmscriptenPointerlockCallback(int eventType, const EmscriptenPointerlockChangeEvent *pointerlockChangeEvent, void *userData);
static EM_BOOL EmscriptenTouchCallback(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData);
static EM_BOOL EmscriptenGamepadCallback(int eventType, const EmscriptenGamepadEvent *gamepadEvent, void *userData);
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
// NOTE: Functions declaration is provided by raylib.h
//----------------------------------------------------------------------------------
// Module Functions Definition: Window and Graphics Device
//----------------------------------------------------------------------------------
// Check if application should close
bool WindowShouldClose(void)
{
// Emterpreter-Async required to run sync code
// https://github.com/emscripten-core/emscripten/wiki/Emterpreter#emterpreter-async-run-synchronous-code
// By default, this function is never called on a web-ready raylib example because we encapsulate
// frame code in a UpdateDrawFrame() function, to allow browser manage execution asynchronously
// but now emscripten allows sync code to be executed in an interpreted way, using emterpreter!
emscripten_sleep(16);
return false;
}
// Toggle fullscreen mode
void ToggleFullscreen(void)
{
platform.ourFullscreen = true;
bool enterFullscreen = false;
const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
if (wasFullscreen)
{
if (CORE.Window.flags & FLAG_FULLSCREEN_MODE) enterFullscreen = false;
else if (CORE.Window.flags & FLAG_BORDERLESS_WINDOWED_MODE) enterFullscreen = true;
else
{
const int canvasWidth = EM_ASM_INT( { return document.getElementById('canvas').width; }, 0);
const int canvasStyleWidth = EM_ASM_INT( { return parseInt(document.getElementById('canvas').style.width); }, 0);
if (canvasStyleWidth > canvasWidth) enterFullscreen = false;
else enterFullscreen = true;
}
EM_ASM(document.exitFullscreen(););
CORE.Window.fullscreen = false;
CORE.Window.flags &= ~FLAG_FULLSCREEN_MODE;
CORE.Window.flags &= ~FLAG_BORDERLESS_WINDOWED_MODE;
}
else enterFullscreen = true;
if (enterFullscreen)
{
// NOTE: The setTimeouts handle the browser mode change delay
EM_ASM(
setTimeout(function()
{
Module.requestFullscreen(false, false);
}, 100);
);
CORE.Window.fullscreen = true;
CORE.Window.flags |= FLAG_FULLSCREEN_MODE;
}
// NOTE: Old notes below:
/*
EM_ASM
(
// This strategy works well while using raylib minimal web shell for emscripten,
// it re-scales the canvas to fullscreen using monitor resolution, for tools this
// is a good strategy but maybe games prefer to keep current canvas resolution and
// display it in fullscreen, adjusting monitor resolution if possible
if (document.fullscreenElement) document.exitFullscreen();
else Module.requestFullscreen(true, true); //false, true);
);
*/
// EM_ASM(Module.requestFullscreen(false, false););
/*
if (!CORE.Window.fullscreen)
{
// Option 1: Request fullscreen for the canvas element
// This option does not seem to work at all:
// emscripten_request_pointerlock() and emscripten_request_fullscreen() are affected by web security,
// the user must click once on the canvas to hide the pointer or transition to full screen
//emscripten_request_fullscreen("#canvas", false);
// Option 2: Request fullscreen for the canvas element with strategy
// This option does not seem to work at all
// Ref: https://github.com/emscripten-core/emscripten/issues/5124
// EmscriptenFullscreenStrategy strategy = {
// .scaleMode = EMSCRIPTEN_FULLSCREEN_SCALE_STRETCH, //EMSCRIPTEN_FULLSCREEN_SCALE_ASPECT,
// .canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF,
// .filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT,
// .canvasResizedCallback = EmscriptenWindowResizedCallback,
// .canvasResizedCallbackUserData = NULL
// };
//emscripten_request_fullscreen_strategy("#canvas", EM_FALSE, &strategy);
// Option 3: Request fullscreen for the canvas element with strategy
// It works as expected but only inside the browser (client area)
EmscriptenFullscreenStrategy strategy = {
.scaleMode = EMSCRIPTEN_FULLSCREEN_SCALE_ASPECT,
.canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF,
.filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT,
.canvasResizedCallback = EmscriptenWindowResizedCallback,
.canvasResizedCallbackUserData = NULL
};
emscripten_enter_soft_fullscreen("#canvas", &strategy);
int width, height;
emscripten_get_canvas_element_size("#canvas", &width, &height);
TRACELOG(LOG_WARNING, "Emscripten: Enter fullscreen: Canvas size: %i x %i", width, height);
CORE.Window.fullscreen = true; // Toggle fullscreen flag
CORE.Window.flags |= FLAG_FULLSCREEN_MODE;
}
else
{
//emscripten_exit_fullscreen();
//emscripten_exit_soft_fullscreen();
int width, height;
emscripten_get_canvas_element_size("#canvas", &width, &height);
TRACELOG(LOG_WARNING, "Emscripten: Exit fullscreen: Canvas size: %i x %i", width, height);
CORE.Window.fullscreen = false; // Toggle fullscreen flag
CORE.Window.flags &= ~FLAG_FULLSCREEN_MODE;
}
*/
}
// Toggle borderless windowed mode
void ToggleBorderlessWindowed(void)
{
platform.ourFullscreen = true;
bool enterBorderless = false;
const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
if (wasFullscreen)
{
if (CORE.Window.flags & FLAG_BORDERLESS_WINDOWED_MODE) enterBorderless = false;
else if (CORE.Window.flags & FLAG_FULLSCREEN_MODE) enterBorderless = true;
else
{
const int canvasWidth = EM_ASM_INT( { return document.getElementById('canvas').width; }, 0);
const int screenWidth = EM_ASM_INT( { return screen.width; }, 0);
if (screenWidth == canvasWidth) enterBorderless = false;
else enterBorderless = true;
}
EM_ASM(document.exitFullscreen(););
CORE.Window.fullscreen = false;
CORE.Window.flags &= ~FLAG_FULLSCREEN_MODE;
CORE.Window.flags &= ~FLAG_BORDERLESS_WINDOWED_MODE;
}
else enterBorderless = true;
if (enterBorderless)
{
// NOTE: 1. The setTimeouts handle the browser mode change delay
// 2. The style unset handles the possibility of a width="value%" like on the default shell.html file
EM_ASM(
setTimeout(function()
{
Module.requestFullscreen(false, true);
setTimeout(function()
{
canvas.style.width="unset";
}, 100);
}, 100);
);
CORE.Window.flags |= FLAG_BORDERLESS_WINDOWED_MODE;
}
}
// Set window state: maximized, if resizable
void MaximizeWindow(void)
{
TRACELOG(LOG_WARNING, "MaximizeWindow() not available on target platform");
}
// Set window state: minimized
void MinimizeWindow(void)
{
TRACELOG(LOG_WARNING, "MinimizeWindow() not available on target platform");
}
// Set window state: not minimized/maximized
void RestoreWindow(void)
{
TRACELOG(LOG_WARNING, "RestoreWindow() not available on target platform");
}
// Set window configuration state using flags
void SetWindowState(unsigned int flags)
{
// Check previous state and requested state to apply required changes
// NOTE: In most cases the functions already change the flags internally
// State change: FLAG_VSYNC_HINT
if ((flags & FLAG_VSYNC_HINT) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_VSYNC_HINT) not available on target platform");
}
// State change: FLAG_BORDERLESS_WINDOWED_MODE
if ((flags & FLAG_BORDERLESS_WINDOWED_MODE) > 0)
{
// NOTE: Window state flag updated inside ToggleBorderlessWindowed() function
const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
if (wasFullscreen)
{
const int canvasWidth = EM_ASM_INT( { return document.getElementById('canvas').width; }, 0);
const int canvasStyleWidth = EM_ASM_INT( { return parseInt(document.getElementById('canvas').style.width); }, 0);
if ((CORE.Window.flags & FLAG_FULLSCREEN_MODE) || canvasStyleWidth > canvasWidth) ToggleBorderlessWindowed();
}
else ToggleBorderlessWindowed();
}
// State change: FLAG_FULLSCREEN_MODE
if ((flags & FLAG_FULLSCREEN_MODE) > 0)
{
// NOTE: Window state flag updated inside ToggleFullscreen() function
const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
if (wasFullscreen)
{
const int canvasWidth = EM_ASM_INT( { return document.getElementById('canvas').width; }, 0);
const int screenWidth = EM_ASM_INT( { return screen.width; }, 0);
if ((CORE.Window.flags & FLAG_BORDERLESS_WINDOWED_MODE) || screenWidth == canvasWidth ) ToggleFullscreen();
}
else ToggleFullscreen();
}
// State change: FLAG_WINDOW_RESIZABLE
if (((CORE.Window.flags & FLAG_WINDOW_RESIZABLE) != (flags & FLAG_WINDOW_RESIZABLE)) && ((flags & FLAG_WINDOW_RESIZABLE) > 0))
{
glfwSetWindowAttrib(platform.handle, GLFW_RESIZABLE, GLFW_TRUE);
CORE.Window.flags |= FLAG_WINDOW_RESIZABLE;
}
// State change: FLAG_WINDOW_UNDECORATED
if ((flags & FLAG_WINDOW_UNDECORATED) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_UNDECORATED) not available on target platform");
}
// State change: FLAG_WINDOW_HIDDEN
if ((flags & FLAG_WINDOW_HIDDEN) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_HIDDEN) not available on target platform");
}
// State change: FLAG_WINDOW_MINIMIZED
if ((flags & FLAG_WINDOW_MINIMIZED) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_MINIMIZED) not available on target platform");
}
// State change: FLAG_WINDOW_MAXIMIZED
if ((flags & FLAG_WINDOW_MAXIMIZED) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_MAXIMIZED) not available on target platform");
}
// State change: FLAG_WINDOW_UNFOCUSED
if ((flags & FLAG_WINDOW_UNFOCUSED) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_UNFOCUSED) not available on target platform");
}
// State change: FLAG_WINDOW_TOPMOST
if ((flags & FLAG_WINDOW_TOPMOST) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_TOPMOST) not available on target platform");
}
// State change: FLAG_WINDOW_ALWAYS_RUN
if ((flags & FLAG_WINDOW_ALWAYS_RUN) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_ALWAYS_RUN) not available on target platform");
}
// The following states can not be changed after window creation
// NOTE: Review for PLATFORM_WEB
// State change: FLAG_WINDOW_TRANSPARENT
if ((flags & FLAG_WINDOW_TRANSPARENT) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_TRANSPARENT) not available on target platform");
}
// State change: FLAG_WINDOW_HIGHDPI
if ((flags & FLAG_WINDOW_HIGHDPI) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_HIGHDPI) not available on target platform");
}
// State change: FLAG_WINDOW_MOUSE_PASSTHROUGH
if ((flags & FLAG_WINDOW_MOUSE_PASSTHROUGH) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_WINDOW_MOUSE_PASSTHROUGH) not available on target platform");
}
// State change: FLAG_MSAA_4X_HINT
if ((flags & FLAG_MSAA_4X_HINT) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_MSAA_4X_HINT) not available on target platform");
}
// State change: FLAG_INTERLACED_HINT
if ((flags & FLAG_INTERLACED_HINT) > 0)
{
TRACELOG(LOG_WARNING, "SetWindowState(FLAG_INTERLACED_HINT) not available on target platform");
}
}
// Clear window configuration state flags
void ClearWindowState(unsigned int flags)
{
// Check previous state and requested state to apply required changes
// NOTE: In most cases the functions already change the flags internally
// State change: FLAG_VSYNC_HINT
if ((flags & FLAG_VSYNC_HINT) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_VSYNC_HINT) not available on target platform");
}
// State change: FLAG_BORDERLESS_WINDOWED_MODE
if ((flags & FLAG_BORDERLESS_WINDOWED_MODE) > 0)
{
const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
if (wasFullscreen)
{
const int canvasWidth = EM_ASM_INT( { return document.getElementById('canvas').width; }, 0);
const int screenWidth = EM_ASM_INT( { return screen.width; }, 0);
if ((CORE.Window.flags & FLAG_BORDERLESS_WINDOWED_MODE) || (screenWidth == canvasWidth)) EM_ASM(document.exitFullscreen(););
}
CORE.Window.flags &= ~FLAG_BORDERLESS_WINDOWED_MODE;
}
// State change: FLAG_FULLSCREEN_MODE
if ((flags & FLAG_FULLSCREEN_MODE) > 0)
{
const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
if (wasFullscreen)
{
const int canvasWidth = EM_ASM_INT( { return document.getElementById('canvas').width; }, 0);
const int canvasStyleWidth = EM_ASM_INT( { return parseInt(document.getElementById('canvas').style.width); }, 0);
if ((CORE.Window.flags & FLAG_FULLSCREEN_MODE) || (canvasStyleWidth > canvasWidth)) EM_ASM(document.exitFullscreen(););
}
CORE.Window.fullscreen = false;
CORE.Window.flags &= ~FLAG_FULLSCREEN_MODE;
}
// State change: FLAG_WINDOW_RESIZABLE
if (((CORE.Window.flags & FLAG_WINDOW_RESIZABLE) > 0) && ((flags & FLAG_WINDOW_RESIZABLE) > 0))
{
glfwSetWindowAttrib(platform.handle, GLFW_RESIZABLE, GLFW_FALSE);
CORE.Window.flags &= ~FLAG_WINDOW_RESIZABLE;
}
// State change: FLAG_WINDOW_HIDDEN
if ((flags & FLAG_WINDOW_HIDDEN) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_HIDDEN) not available on target platform");
}
// State change: FLAG_WINDOW_MINIMIZED
if ((flags & FLAG_WINDOW_MINIMIZED) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_MINIMIZED) not available on target platform");
}
// State change: FLAG_WINDOW_MAXIMIZED
if ((flags & FLAG_WINDOW_MAXIMIZED) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_MAXIMIZED) not available on target platform");
}
// State change: FLAG_WINDOW_UNDECORATED
if ((flags & FLAG_WINDOW_UNDECORATED) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_UNDECORATED) not available on target platform");
}
// State change: FLAG_WINDOW_UNFOCUSED
if ((flags & FLAG_WINDOW_UNFOCUSED) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_UNFOCUSED) not available on target platform");
}
// State change: FLAG_WINDOW_TOPMOST
if ((flags & FLAG_WINDOW_TOPMOST) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_TOPMOST) not available on target platform");
}
// State change: FLAG_WINDOW_ALWAYS_RUN
if ((flags & FLAG_WINDOW_ALWAYS_RUN) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_ALWAYS_RUN) not available on target platform");
}
// The following states can not be changed after window creation
// NOTE: Review for PLATFORM_WEB
// State change: FLAG_WINDOW_TRANSPARENT
if ((flags & FLAG_WINDOW_TRANSPARENT) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_TRANSPARENT) not available on target platform");
}
// State change: FLAG_WINDOW_HIGHDPI
if ((flags & FLAG_WINDOW_HIGHDPI) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_HIGHDPI) not available on target platform");
}
// State change: FLAG_WINDOW_MOUSE_PASSTHROUGH
if ((flags & FLAG_WINDOW_MOUSE_PASSTHROUGH) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_WINDOW_MOUSE_PASSTHROUGH) not available on target platform");
}
// State change: FLAG_MSAA_4X_HINT
if ((flags & FLAG_MSAA_4X_HINT) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_MSAA_4X_HINT) not available on target platform");
}
// State change: FLAG_INTERLACED_HINT
if ((flags & FLAG_INTERLACED_HINT) > 0)
{
TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_INTERLACED_HINT) not available on target platform");
}
}
// Set icon for window
void SetWindowIcon(Image image)
{
TRACELOG(LOG_WARNING, "SetWindowIcon() not available on target platform");
}
// Set icon for window, multiple images
void SetWindowIcons(Image *images, int count)
{
TRACELOG(LOG_WARNING, "SetWindowIcons() not available on target platform");
}
// Set title for window
void SetWindowTitle(const char *title)
{
CORE.Window.title = title;
emscripten_set_window_title(title);
}
// Set window position on screen (windowed mode)
void SetWindowPosition(int x, int y)
{
TRACELOG(LOG_WARNING, "SetWindowPosition() not available on target platform");
}
// Set monitor for the current window
void SetWindowMonitor(int monitor)
{
TRACELOG(LOG_WARNING, "SetWindowMonitor() not available on target platform");
}
// Set window minimum dimensions (FLAG_WINDOW_RESIZABLE)
void SetWindowMinSize(int width, int height)
{
CORE.Window.screenMin.width = width;
CORE.Window.screenMin.height = height;
// Trigger the resize event once to update the window minimum width and height
if ((CORE.Window.flags & FLAG_WINDOW_RESIZABLE) != 0) EmscriptenResizeCallback(EMSCRIPTEN_EVENT_RESIZE, NULL, NULL);
}
// Set window maximum dimensions (FLAG_WINDOW_RESIZABLE)
void SetWindowMaxSize(int width, int height)
{
CORE.Window.screenMax.width = width;
CORE.Window.screenMax.height = height;
// Trigger the resize event once to update the window maximum width and height
if ((CORE.Window.flags & FLAG_WINDOW_RESIZABLE) != 0) EmscriptenResizeCallback(EMSCRIPTEN_EVENT_RESIZE, NULL, NULL);
}
// Set window dimensions
void SetWindowSize(int width, int height)
{
glfwSetWindowSize(platform.handle, width, height);
}
// Set window opacity, value opacity is between 0.0 and 1.0
void SetWindowOpacity(float opacity)
{
TRACELOG(LOG_WARNING, "SetWindowOpacity() not available on target platform");
}
// Set window focused
void SetWindowFocused(void)
{
TRACELOG(LOG_WARNING, "SetWindowFocused() not available on target platform");
}
// Get native window handle
void *GetWindowHandle(void)
{
TRACELOG(LOG_WARNING, "GetWindowHandle() not implemented on target platform");
return NULL;
}
// Get number of monitors
int GetMonitorCount(void)
{
TRACELOG(LOG_WARNING, "GetMonitorCount() not implemented on target platform");
return 1;
}
// Get number of monitors
int GetCurrentMonitor(void)
{
TRACELOG(LOG_WARNING, "GetCurrentMonitor() not implemented on target platform");
return 0;
}
// Get selected monitor position
Vector2 GetMonitorPosition(int monitor)
{
TRACELOG(LOG_WARNING, "GetMonitorPosition() not implemented on target platform");
return (Vector2){ 0, 0 };
}
// Get selected monitor width (currently used by monitor)
int GetMonitorWidth(int monitor)
{
// NOTE: Returned value is limited to the current monitor where the browser window is located
int width = 0;
width = EM_ASM_INT( { return screen.width; }, 0);
return width;
}
// Get selected monitor height (currently used by monitor)
int GetMonitorHeight(int monitor)
{
// NOTE: Returned value is limited to the current monitor where the browser window is located
int height = 0;
height = EM_ASM_INT( { return screen.height; }, 0);
return height;
}
// Get selected monitor physical width in millimetres
int GetMonitorPhysicalWidth(int monitor)
{
TRACELOG(LOG_WARNING, "GetMonitorPhysicalWidth() not implemented on target platform");
return 0;
}
// Get selected monitor physical height in millimetres
int GetMonitorPhysicalHeight(int monitor)
{
TRACELOG(LOG_WARNING, "GetMonitorPhysicalHeight() not implemented on target platform");
return 0;
}
// Get selected monitor refresh rate
int GetMonitorRefreshRate(int monitor)
{
TRACELOG(LOG_WARNING, "GetMonitorRefreshRate() not implemented on target platform");
return 0;
}
// Get the human-readable, UTF-8 encoded name of the selected monitor
const char *GetMonitorName(int monitor)
{
TRACELOG(LOG_WARNING, "GetMonitorName() not implemented on target platform");
return "";
}
// Get window position XY on monitor
Vector2 GetWindowPosition(void)
{
// NOTE: Returned position is relative to the current monitor where the browser window is located
Vector2 position = { 0, 0 };
position.x = (float)EM_ASM_INT( { return window.screenX; }, 0);
position.y = (float)EM_ASM_INT( { return window.screenY; }, 0);
return position;
}
// Get window scale DPI factor for current monitor
Vector2 GetWindowScaleDPI(void)
{
TRACELOG(LOG_WARNING, "GetWindowScaleDPI() not implemented on target platform");
return (Vector2){ 1.0f, 1.0f };
}
// Set clipboard text content
void SetClipboardText(const char *text)
{
// Security check to (partially) avoid malicious code
if (strchr(text, '\'') != NULL) TRACELOG(LOG_WARNING, "SYSTEM: Provided Clipboard could be potentially malicious, avoid [\'] character");
else EM_ASM({ navigator.clipboard.writeText(UTF8ToString($0)); }, text);
}
// Get clipboard text content
// NOTE: returned string is allocated and freed by GLFW
const char *GetClipboardText(void)
{
/*
// Accessing clipboard data from browser is tricky due to security reasons
// The method to use is navigator.clipboard.readText() but this is an asynchronous method
// that will return at some moment after the function is called with the required data
emscripten_run_script_string("navigator.clipboard.readText() \
.then(text => { document.getElementById('clipboard').innerText = text; console.log('Pasted content: ', text); }) \
.catch(err => { console.error('Failed to read clipboard contents: ', err); });"
);
// The main issue is getting that data, one approach could be using ASYNCIFY and wait
// for the data but it requires adding Asyncify emscripten library on compilation
// Another approach could be just copy the data in a HTML text field and try to retrieve it
// later on if available... and clean it for future accesses
*/
return NULL;
}
// Show mouse cursor
void ShowCursor(void)
{
if (CORE.Input.Mouse.cursorHidden)
{
EM_ASM( { document.getElementById("canvas").style.cursor = UTF8ToString($0); }, cursorLUT[CORE.Input.Mouse.cursor]);
CORE.Input.Mouse.cursorHidden = false;
}
}
// Hides mouse cursor
void HideCursor(void)
{
if (!CORE.Input.Mouse.cursorHidden)
{
EM_ASM(document.getElementById('canvas').style.cursor = 'none';);
CORE.Input.Mouse.cursorHidden = true;
}
}
// Enables cursor (unlock cursor)
void EnableCursor(void)
{
emscripten_exit_pointerlock();
// Set cursor position in the middle
SetMousePosition(CORE.Window.screen.width/2, CORE.Window.screen.height/2);
// NOTE: CORE.Input.Mouse.cursorHidden handled by EmscriptenPointerlockCallback()
}
// Disables cursor (lock cursor)
void DisableCursor(void)
{
// TODO: figure out how not to hard code the canvas ID here.
emscripten_request_pointerlock("#canvas", 1);
// Set cursor position in the middle
SetMousePosition(CORE.Window.screen.width/2, CORE.Window.screen.height/2);
// NOTE: CORE.Input.Mouse.cursorHidden handled by EmscriptenPointerlockCallback()
}
// Swap back buffer with front buffer (screen drawing)
void SwapScreenBuffer(void)
{
glfwSwapBuffers(platform.handle);
}
//----------------------------------------------------------------------------------
// Module Functions Definition: Misc
//----------------------------------------------------------------------------------
// Get elapsed time measure in seconds since InitTimer()
double GetTime(void)
{
double time = glfwGetTime(); // Elapsed time since glfwInit()
return time;
}
// Open URL with default system browser (if available)
// NOTE: This function is only safe to use if you control the URL given.
// A user could craft a malicious string performing another action.
// Only call this function yourself not with user input or make sure to check the string yourself.
// Ref: https://github.com/raysan5/raylib/issues/686
void OpenURL(const char *url)
{
// Security check to (partially) avoid malicious code on target platform
if (strchr(url, '\'') != NULL) TRACELOG(LOG_WARNING, "SYSTEM: Provided URL could be potentially malicious, avoid [\'] character");
else emscripten_run_script(TextFormat("window.open('%s', '_blank')", url));
}
//----------------------------------------------------------------------------------
// Module Functions Definition: Inputs
//----------------------------------------------------------------------------------
// Set internal gamepad mappings
int SetGamepadMappings(const char *mappings)
{
TRACELOG(LOG_INFO, "SetGamepadMappings not implemented in rcore_web.c");
return 0;
}
// Set gamepad vibration
void SetGamepadVibration(int gamepad, float leftMotor, float rightMotor)
{
TRACELOG(LOG_WARNING, "GamepadSetVibration() not implemented on target platform");
}
// Set mouse position XY
void SetMousePosition(int x, int y)
{
CORE.Input.Mouse.currentPosition = (Vector2){ (float)x, (float)y };
CORE.Input.Mouse.previousPosition = CORE.Input.Mouse.currentPosition;
// NOTE: emscripten not implemented
glfwSetCursorPos(platform.handle, CORE.Input.Mouse.currentPosition.x, CORE.Input.Mouse.currentPosition.y);
}
// Set mouse cursor
void SetMouseCursor(int cursor)
{
if (CORE.Input.Mouse.cursor != cursor)
{
if (!CORE.Input.Mouse.cursorHidden) EM_ASM( { document.getElementById('canvas').style.cursor = UTF8ToString($0); }, cursorLUT[cursor]);
CORE.Input.Mouse.cursor = cursor;
}
}
// Register all input events
void PollInputEvents(void)
{
#if defined(SUPPORT_GESTURES_SYSTEM)
// NOTE: Gestures update must be called every frame to reset gestures correctly
// because ProcessGestureEvent() is just called on an event, not every frame
UpdateGestures();
#endif
// Reset keys/chars pressed registered
CORE.Input.Keyboard.keyPressedQueueCount = 0;
CORE.Input.Keyboard.charPressedQueueCount = 0;
// Reset last gamepad button/axis registered state
CORE.Input.Gamepad.lastButtonPressed = 0; // GAMEPAD_BUTTON_UNKNOWN
//CORE.Input.Gamepad.axisCount = 0;
// Keyboard/Mouse input polling (automatically managed by GLFW3 through callback)
// Register previous keys states
for (int i = 0; i < MAX_KEYBOARD_KEYS; i++)
{
CORE.Input.Keyboard.previousKeyState[i] = CORE.Input.Keyboard.currentKeyState[i];
CORE.Input.Keyboard.keyRepeatInFrame[i] = 0;
}
// Register previous mouse states
for (int i = 0; i < MAX_MOUSE_BUTTONS; i++) CORE.Input.Mouse.previousButtonState[i] = CORE.Input.Mouse.currentButtonState[i];
// Register previous mouse wheel state
CORE.Input.Mouse.previousWheelMove = CORE.Input.Mouse.currentWheelMove;
CORE.Input.Mouse.currentWheelMove = (Vector2){ 0.0f, 0.0f };
// Register previous mouse position
CORE.Input.Mouse.previousPosition = CORE.Input.Mouse.currentPosition;
// Register previous touch states
for (int i = 0; i < MAX_TOUCH_POINTS; i++) CORE.Input.Touch.previousTouchState[i] = CORE.Input.Touch.currentTouchState[i];
// Reset touch positions
// TODO: It resets on target platform the mouse position and not filled again until a move-event,
// so, if mouse is not moved it returns a (0, 0) position... this behaviour should be reviewed!
//for (int i = 0; i < MAX_TOUCH_POINTS; i++) CORE.Input.Touch.position[i] = (Vector2){ 0, 0 };
// Gamepad support using emscripten API
// NOTE: GLFW3 joystick functionality not available in web
// Get number of gamepads connected
int numGamepads = 0;
if (emscripten_sample_gamepad_data() == EMSCRIPTEN_RESULT_SUCCESS) numGamepads = emscripten_get_num_gamepads();
for (int i = 0; (i < numGamepads) && (i < MAX_GAMEPADS); i++)
{
// Register previous gamepad button states
for (int k = 0; k < MAX_GAMEPAD_BUTTONS; k++) CORE.Input.Gamepad.previousButtonState[i][k] = CORE.Input.Gamepad.currentButtonState[i][k];
EmscriptenGamepadEvent gamepadState;
int result = emscripten_get_gamepad_status(i, &gamepadState);
if (result == EMSCRIPTEN_RESULT_SUCCESS)
{
// Register buttons data for every connected gamepad
for (int j = 0; (j < gamepadState.numButtons) && (j < MAX_GAMEPAD_BUTTONS); j++)
{
GamepadButton button = -1;
// Gamepad Buttons reference: https://www.w3.org/TR/gamepad/#gamepad-interface
switch (j)
{
case 0: button = GAMEPAD_BUTTON_RIGHT_FACE_DOWN; break;
case 1: button = GAMEPAD_BUTTON_RIGHT_FACE_RIGHT; break;
case 2: button = GAMEPAD_BUTTON_RIGHT_FACE_LEFT; break;
case 3: button = GAMEPAD_BUTTON_RIGHT_FACE_UP; break;
case 4: button = GAMEPAD_BUTTON_LEFT_TRIGGER_1; break;
case 5: button = GAMEPAD_BUTTON_RIGHT_TRIGGER_1; break;
case 6: button = GAMEPAD_BUTTON_LEFT_TRIGGER_2; break;
case 7: button = GAMEPAD_BUTTON_RIGHT_TRIGGER_2; break;
case 8: button = GAMEPAD_BUTTON_MIDDLE_LEFT; break;
case 9: button = GAMEPAD_BUTTON_MIDDLE_RIGHT; break;
case 10: button = GAMEPAD_BUTTON_LEFT_THUMB; break;
case 11: button = GAMEPAD_BUTTON_RIGHT_THUMB; break;
case 12: button = GAMEPAD_BUTTON_LEFT_FACE_UP; break;
case 13: button = GAMEPAD_BUTTON_LEFT_FACE_DOWN; break;
case 14: button = GAMEPAD_BUTTON_LEFT_FACE_LEFT; break;
case 15: button = GAMEPAD_BUTTON_LEFT_FACE_RIGHT; break;
default: break;
}
if (button != -1) // Check for valid button
{
if (gamepadState.digitalButton[j] == 1)
{
CORE.Input.Gamepad.currentButtonState[i][button] = 1;
CORE.Input.Gamepad.lastButtonPressed = button;
}
else CORE.Input.Gamepad.currentButtonState[i][button] = 0;
}
//TRACELOGD("INPUT: Gamepad %d, button %d: Digital: %d, Analog: %g", gamepadState.index, j, gamepadState.digitalButton[j], gamepadState.analogButton[j]);
}
// Register axis data for every connected gamepad
for (int j = 0; (j < gamepadState.numAxes) && (j < MAX_GAMEPAD_AXIS); j++)
{
CORE.Input.Gamepad.axisState[i][j] = gamepadState.axis[j];
}
CORE.Input.Gamepad.axisCount[i] = gamepadState.numAxes;
}
}
CORE.Window.resizedLastFrame = false;
// TODO: This code does not seem to do anything??
//if (CORE.Window.eventWaiting) glfwWaitEvents(); // Wait for in input events before continue (drawing is paused)
//else glfwPollEvents(); // Poll input events: keyboard/mouse/window events (callbacks) --> WARNING: Where is key input reset?
}
//----------------------------------------------------------------------------------