From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- .../src/video/emscripten/SDL_emscriptenevents.c | 1117 ++++++++++++++++++++ 1 file changed, 1117 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/video/emscripten/SDL_emscriptenevents.c (limited to 'contrib/SDL-3.2.8/src/video/emscripten/SDL_emscriptenevents.c') diff --git a/contrib/SDL-3.2.8/src/video/emscripten/SDL_emscriptenevents.c b/contrib/SDL-3.2.8/src/video/emscripten/SDL_emscriptenevents.c new file mode 100644 index 0000000..49a140f --- /dev/null +++ b/contrib/SDL-3.2.8/src/video/emscripten/SDL_emscriptenevents.c @@ -0,0 +1,1117 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + 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. +*/ + +#include "SDL_internal.h" + +#ifdef SDL_VIDEO_DRIVER_EMSCRIPTEN + +#include +#include + +#include "../../events/SDL_dropevents_c.h" +#include "../../events/SDL_events_c.h" +#include "../../events/SDL_keyboard_c.h" +#include "../../events/SDL_touch_c.h" + +#include "SDL_emscriptenevents.h" +#include "SDL_emscriptenvideo.h" + +/* +Emscripten PK code to scancode +https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent +https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/code +*/ +static const SDL_Scancode emscripten_scancode_table[] = { + /* 0x00 "Unidentified" */ SDL_SCANCODE_UNKNOWN, + /* 0x01 "Escape" */ SDL_SCANCODE_ESCAPE, + /* 0x02 "Digit0" */ SDL_SCANCODE_0, + /* 0x03 "Digit1" */ SDL_SCANCODE_1, + /* 0x04 "Digit2" */ SDL_SCANCODE_2, + /* 0x05 "Digit3" */ SDL_SCANCODE_3, + /* 0x06 "Digit4" */ SDL_SCANCODE_4, + /* 0x07 "Digit5" */ SDL_SCANCODE_5, + /* 0x08 "Digit6" */ SDL_SCANCODE_6, + /* 0x09 "Digit7" */ SDL_SCANCODE_7, + /* 0x0A "Digit8" */ SDL_SCANCODE_8, + /* 0x0B "Digit9" */ SDL_SCANCODE_9, + /* 0x0C "Minus" */ SDL_SCANCODE_MINUS, + /* 0x0D "Equal" */ SDL_SCANCODE_EQUALS, + /* 0x0E "Backspace" */ SDL_SCANCODE_BACKSPACE, + /* 0x0F "Tab" */ SDL_SCANCODE_TAB, + /* 0x10 "KeyQ" */ SDL_SCANCODE_Q, + /* 0x11 "KeyW" */ SDL_SCANCODE_W, + /* 0x12 "KeyE" */ SDL_SCANCODE_E, + /* 0x13 "KeyR" */ SDL_SCANCODE_R, + /* 0x14 "KeyT" */ SDL_SCANCODE_T, + /* 0x15 "KeyY" */ SDL_SCANCODE_Y, + /* 0x16 "KeyU" */ SDL_SCANCODE_U, + /* 0x17 "KeyI" */ SDL_SCANCODE_I, + /* 0x18 "KeyO" */ SDL_SCANCODE_O, + /* 0x19 "KeyP" */ SDL_SCANCODE_P, + /* 0x1A "BracketLeft" */ SDL_SCANCODE_LEFTBRACKET, + /* 0x1B "BracketRight" */ SDL_SCANCODE_RIGHTBRACKET, + /* 0x1C "Enter" */ SDL_SCANCODE_RETURN, + /* 0x1D "ControlLeft" */ SDL_SCANCODE_LCTRL, + /* 0x1E "KeyA" */ SDL_SCANCODE_A, + /* 0x1F "KeyS" */ SDL_SCANCODE_S, + /* 0x20 "KeyD" */ SDL_SCANCODE_D, + /* 0x21 "KeyF" */ SDL_SCANCODE_F, + /* 0x22 "KeyG" */ SDL_SCANCODE_G, + /* 0x23 "KeyH" */ SDL_SCANCODE_H, + /* 0x24 "KeyJ" */ SDL_SCANCODE_J, + /* 0x25 "KeyK" */ SDL_SCANCODE_K, + /* 0x26 "KeyL" */ SDL_SCANCODE_L, + /* 0x27 "Semicolon" */ SDL_SCANCODE_SEMICOLON, + /* 0x28 "Quote" */ SDL_SCANCODE_APOSTROPHE, + /* 0x29 "Backquote" */ SDL_SCANCODE_GRAVE, + /* 0x2A "ShiftLeft" */ SDL_SCANCODE_LSHIFT, + /* 0x2B "Backslash" */ SDL_SCANCODE_BACKSLASH, + /* 0x2C "KeyZ" */ SDL_SCANCODE_Z, + /* 0x2D "KeyX" */ SDL_SCANCODE_X, + /* 0x2E "KeyC" */ SDL_SCANCODE_C, + /* 0x2F "KeyV" */ SDL_SCANCODE_V, + /* 0x30 "KeyB" */ SDL_SCANCODE_B, + /* 0x31 "KeyN" */ SDL_SCANCODE_N, + /* 0x32 "KeyM" */ SDL_SCANCODE_M, + /* 0x33 "Comma" */ SDL_SCANCODE_COMMA, + /* 0x34 "Period" */ SDL_SCANCODE_PERIOD, + /* 0x35 "Slash" */ SDL_SCANCODE_SLASH, + /* 0x36 "ShiftRight" */ SDL_SCANCODE_RSHIFT, + /* 0x37 "NumpadMultiply" */ SDL_SCANCODE_KP_MULTIPLY, + /* 0x38 "AltLeft" */ SDL_SCANCODE_LALT, + /* 0x39 "Space" */ SDL_SCANCODE_SPACE, + /* 0x3A "CapsLock" */ SDL_SCANCODE_CAPSLOCK, + /* 0x3B "F1" */ SDL_SCANCODE_F1, + /* 0x3C "F2" */ SDL_SCANCODE_F2, + /* 0x3D "F3" */ SDL_SCANCODE_F3, + /* 0x3E "F4" */ SDL_SCANCODE_F4, + /* 0x3F "F5" */ SDL_SCANCODE_F5, + /* 0x40 "F6" */ SDL_SCANCODE_F6, + /* 0x41 "F7" */ SDL_SCANCODE_F7, + /* 0x42 "F8" */ SDL_SCANCODE_F8, + /* 0x43 "F9" */ SDL_SCANCODE_F9, + /* 0x44 "F10" */ SDL_SCANCODE_F10, + /* 0x45 "Pause" */ SDL_SCANCODE_PAUSE, + /* 0x46 "ScrollLock" */ SDL_SCANCODE_SCROLLLOCK, + /* 0x47 "Numpad7" */ SDL_SCANCODE_KP_7, + /* 0x48 "Numpad8" */ SDL_SCANCODE_KP_8, + /* 0x49 "Numpad9" */ SDL_SCANCODE_KP_9, + /* 0x4A "NumpadSubtract" */ SDL_SCANCODE_KP_MINUS, + /* 0x4B "Numpad4" */ SDL_SCANCODE_KP_4, + /* 0x4C "Numpad5" */ SDL_SCANCODE_KP_5, + /* 0x4D "Numpad6" */ SDL_SCANCODE_KP_6, + /* 0x4E "NumpadAdd" */ SDL_SCANCODE_KP_PLUS, + /* 0x4F "Numpad1" */ SDL_SCANCODE_KP_1, + /* 0x50 "Numpad2" */ SDL_SCANCODE_KP_2, + /* 0x51 "Numpad3" */ SDL_SCANCODE_KP_3, + /* 0x52 "Numpad0" */ SDL_SCANCODE_KP_0, + /* 0x53 "NumpadDecimal" */ SDL_SCANCODE_KP_PERIOD, + /* 0x54 "PrintScreen" */ SDL_SCANCODE_PRINTSCREEN, + /* 0x55 */ SDL_SCANCODE_UNKNOWN, + /* 0x56 "IntlBackslash" */ SDL_SCANCODE_NONUSBACKSLASH, + /* 0x57 "F11" */ SDL_SCANCODE_F11, + /* 0x58 "F12" */ SDL_SCANCODE_F12, + /* 0x59 "NumpadEqual" */ SDL_SCANCODE_KP_EQUALS, + /* 0x5A */ SDL_SCANCODE_UNKNOWN, + /* 0x5B */ SDL_SCANCODE_UNKNOWN, + /* 0x5C */ SDL_SCANCODE_UNKNOWN, + /* 0x5D */ SDL_SCANCODE_UNKNOWN, + /* 0x5E */ SDL_SCANCODE_UNKNOWN, + /* 0x5F */ SDL_SCANCODE_UNKNOWN, + /* 0x60 */ SDL_SCANCODE_UNKNOWN, + /* 0x61 */ SDL_SCANCODE_UNKNOWN, + /* 0x62 */ SDL_SCANCODE_UNKNOWN, + /* 0x63 */ SDL_SCANCODE_UNKNOWN, + /* 0x64 "F13" */ SDL_SCANCODE_F13, + /* 0x65 "F14" */ SDL_SCANCODE_F14, + /* 0x66 "F15" */ SDL_SCANCODE_F15, + /* 0x67 "F16" */ SDL_SCANCODE_F16, + /* 0x68 "F17" */ SDL_SCANCODE_F17, + /* 0x69 "F18" */ SDL_SCANCODE_F18, + /* 0x6A "F19" */ SDL_SCANCODE_F19, + /* 0x6B "F20" */ SDL_SCANCODE_F20, + /* 0x6C "F21" */ SDL_SCANCODE_F21, + /* 0x6D "F22" */ SDL_SCANCODE_F22, + /* 0x6E "F23" */ SDL_SCANCODE_F23, + /* 0x6F */ SDL_SCANCODE_UNKNOWN, + /* 0x70 "KanaMode" */ SDL_SCANCODE_INTERNATIONAL2, + /* 0x71 "Lang2" */ SDL_SCANCODE_LANG2, + /* 0x72 "Lang1" */ SDL_SCANCODE_LANG1, + /* 0x73 "IntlRo" */ SDL_SCANCODE_INTERNATIONAL1, + /* 0x74 */ SDL_SCANCODE_UNKNOWN, + /* 0x75 */ SDL_SCANCODE_UNKNOWN, + /* 0x76 "F24" */ SDL_SCANCODE_F24, + /* 0x77 */ SDL_SCANCODE_UNKNOWN, + /* 0x78 */ SDL_SCANCODE_UNKNOWN, + /* 0x79 "Convert" */ SDL_SCANCODE_INTERNATIONAL4, + /* 0x7A */ SDL_SCANCODE_UNKNOWN, + /* 0x7B "NonConvert" */ SDL_SCANCODE_INTERNATIONAL5, + /* 0x7C */ SDL_SCANCODE_UNKNOWN, + /* 0x7D "IntlYen" */ SDL_SCANCODE_INTERNATIONAL3, + /* 0x7E "NumpadComma" */ SDL_SCANCODE_KP_COMMA +}; + +static SDL_Scancode Emscripten_MapScanCode(const char *code) +{ + const DOM_PK_CODE_TYPE pk_code = emscripten_compute_dom_pk_code(code); + if (pk_code < SDL_arraysize(emscripten_scancode_table)) { + return emscripten_scancode_table[pk_code]; + } + + switch (pk_code) { + case DOM_PK_PASTE: + return SDL_SCANCODE_PASTE; + case DOM_PK_MEDIA_TRACK_PREVIOUS: + return SDL_SCANCODE_MEDIA_PREVIOUS_TRACK; + case DOM_PK_CUT: + return SDL_SCANCODE_CUT; + case DOM_PK_COPY: + return SDL_SCANCODE_COPY; + case DOM_PK_MEDIA_TRACK_NEXT: + return SDL_SCANCODE_MEDIA_NEXT_TRACK; + case DOM_PK_NUMPAD_ENTER: + return SDL_SCANCODE_KP_ENTER; + case DOM_PK_CONTROL_RIGHT: + return SDL_SCANCODE_RCTRL; + case DOM_PK_AUDIO_VOLUME_MUTE: + return SDL_SCANCODE_MUTE; + case DOM_PK_MEDIA_PLAY_PAUSE: + return SDL_SCANCODE_MEDIA_PLAY_PAUSE; + case DOM_PK_MEDIA_STOP: + return SDL_SCANCODE_MEDIA_STOP; + case DOM_PK_EJECT: + return SDL_SCANCODE_MEDIA_EJECT; + case DOM_PK_AUDIO_VOLUME_DOWN: + return SDL_SCANCODE_VOLUMEDOWN; + case DOM_PK_AUDIO_VOLUME_UP: + return SDL_SCANCODE_VOLUMEUP; + case DOM_PK_BROWSER_HOME: + return SDL_SCANCODE_AC_HOME; + case DOM_PK_NUMPAD_DIVIDE: + return SDL_SCANCODE_KP_DIVIDE; + case DOM_PK_ALT_RIGHT: + return SDL_SCANCODE_RALT; + case DOM_PK_HELP: + return SDL_SCANCODE_HELP; + case DOM_PK_NUM_LOCK: + return SDL_SCANCODE_NUMLOCKCLEAR; + case DOM_PK_HOME: + return SDL_SCANCODE_HOME; + case DOM_PK_ARROW_UP: + return SDL_SCANCODE_UP; + case DOM_PK_PAGE_UP: + return SDL_SCANCODE_PAGEUP; + case DOM_PK_ARROW_LEFT: + return SDL_SCANCODE_LEFT; + case DOM_PK_ARROW_RIGHT: + return SDL_SCANCODE_RIGHT; + case DOM_PK_END: + return SDL_SCANCODE_END; + case DOM_PK_ARROW_DOWN: + return SDL_SCANCODE_DOWN; + case DOM_PK_PAGE_DOWN: + return SDL_SCANCODE_PAGEDOWN; + case DOM_PK_INSERT: + return SDL_SCANCODE_INSERT; + case DOM_PK_DELETE: + return SDL_SCANCODE_DELETE; + case DOM_PK_META_LEFT: + return SDL_SCANCODE_LGUI; + case DOM_PK_META_RIGHT: + return SDL_SCANCODE_RGUI; + case DOM_PK_CONTEXT_MENU: + return SDL_SCANCODE_APPLICATION; + case DOM_PK_POWER: + return SDL_SCANCODE_POWER; + case DOM_PK_BROWSER_SEARCH: + return SDL_SCANCODE_AC_SEARCH; + case DOM_PK_BROWSER_FAVORITES: + return SDL_SCANCODE_AC_BOOKMARKS; + case DOM_PK_BROWSER_REFRESH: + return SDL_SCANCODE_AC_REFRESH; + case DOM_PK_BROWSER_STOP: + return SDL_SCANCODE_AC_STOP; + case DOM_PK_BROWSER_FORWARD: + return SDL_SCANCODE_AC_FORWARD; + case DOM_PK_BROWSER_BACK: + return SDL_SCANCODE_AC_BACK; + case DOM_PK_MEDIA_SELECT: + return SDL_SCANCODE_MEDIA_SELECT; + } + + return SDL_SCANCODE_UNKNOWN; +} + +static EM_BOOL Emscripten_HandlePointerLockChange(int eventType, const EmscriptenPointerlockChangeEvent *changeEvent, void *userData) +{ + SDL_WindowData *window_data = (SDL_WindowData *)userData; + // keep track of lock losses, so we can regrab if/when appropriate. + window_data->has_pointer_lock = changeEvent->isActive; + return 0; +} + +static EM_BOOL Emscripten_HandleMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData) +{ + SDL_WindowData *window_data = userData; + const bool isPointerLocked = window_data->has_pointer_lock; + float mx, my; + + // rescale (in case canvas is being scaled) + double client_w, client_h, xscale, yscale; + emscripten_get_element_css_size(window_data->canvas_id, &client_w, &client_h); + xscale = window_data->window->w / client_w; + yscale = window_data->window->h / client_h; + + if (isPointerLocked) { + mx = (float)(mouseEvent->movementX * xscale); + my = (float)(mouseEvent->movementY * yscale); + } else { + mx = (float)(mouseEvent->targetX * xscale); + my = (float)(mouseEvent->targetY * yscale); + } + + SDL_SendMouseMotion(0, window_data->window, SDL_DEFAULT_MOUSE_ID, isPointerLocked, mx, my); + return 0; +} + +static EM_BOOL Emscripten_HandleMouseButton(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData) +{ + SDL_WindowData *window_data = userData; + Uint8 sdl_button; + bool sdl_button_state; + double css_w, css_h; + bool prevent_default = false; // needed for iframe implementation in Chrome-based browsers. + + switch (mouseEvent->button) { + case 0: + sdl_button = SDL_BUTTON_LEFT; + break; + case 1: + sdl_button = SDL_BUTTON_MIDDLE; + break; + case 2: + sdl_button = SDL_BUTTON_RIGHT; + break; + default: + return 0; + } + + const SDL_Mouse *mouse = SDL_GetMouse(); + SDL_assert(mouse != NULL); + + if (eventType == EMSCRIPTEN_EVENT_MOUSEDOWN) { + if (mouse->relative_mode && !window_data->has_pointer_lock) { + emscripten_request_pointerlock(window_data->canvas_id, 0); // try to regrab lost pointer lock. + } + sdl_button_state = true; + } else { + sdl_button_state = false; + prevent_default = SDL_EventEnabled(SDL_EVENT_MOUSE_BUTTON_UP); + } + + SDL_SendMouseButton(0, window_data->window, SDL_DEFAULT_MOUSE_ID, sdl_button, sdl_button_state); + + // We have an imaginary mouse capture, because we need SDL to not drop our imaginary mouse focus when we leave the canvas. + if (mouse->auto_capture) { + if (SDL_GetMouseState(NULL, NULL) != 0) { + window_data->window->flags |= SDL_WINDOW_MOUSE_CAPTURE; + } else { + window_data->window->flags &= ~SDL_WINDOW_MOUSE_CAPTURE; + } + } + + if ((eventType == EMSCRIPTEN_EVENT_MOUSEUP) && window_data->mouse_focus_loss_pending) { + window_data->mouse_focus_loss_pending = (window_data->window->flags & SDL_WINDOW_MOUSE_CAPTURE) != 0; + if (!window_data->mouse_focus_loss_pending) { + SDL_SetMouseFocus(NULL); + } + } else { + // Do not consume the event if the mouse is outside of the canvas. + emscripten_get_element_css_size(window_data->canvas_id, &css_w, &css_h); + if (mouseEvent->targetX < 0 || mouseEvent->targetX >= css_w || + mouseEvent->targetY < 0 || mouseEvent->targetY >= css_h) { + return 0; + } + } + + return prevent_default; +} + +static EM_BOOL Emscripten_HandleMouseFocus(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData) +{ + SDL_WindowData *window_data = userData; + + const bool isPointerLocked = window_data->has_pointer_lock; + + if (!isPointerLocked) { + // rescale (in case canvas is being scaled) + float mx, my; + double client_w, client_h; + emscripten_get_element_css_size(window_data->canvas_id, &client_w, &client_h); + + mx = (float)(mouseEvent->targetX * (window_data->window->w / client_w)); + my = (float)(mouseEvent->targetY * (window_data->window->h / client_h)); + SDL_SendMouseMotion(0, window_data->window, SDL_GLOBAL_MOUSE_ID, isPointerLocked, mx, my); + } + + const bool isenter = (eventType == EMSCRIPTEN_EVENT_MOUSEENTER); + if (isenter && window_data->mouse_focus_loss_pending) { + window_data->mouse_focus_loss_pending = false; // just drop the state, but don't send the enter event. + } else if (!isenter && (window_data->window->flags & SDL_WINDOW_MOUSE_CAPTURE)) { + window_data->mouse_focus_loss_pending = true; // waiting on a mouse button to let go before we send the mouse focus update. + } else { + SDL_SetMouseFocus(isenter ? window_data->window : NULL); + } + + return SDL_EventEnabled(SDL_EVENT_MOUSE_MOTION); // !!! FIXME: should this be MOUSE_MOTION or something else? +} + +static EM_BOOL Emscripten_HandleWheel(int eventType, const EmscriptenWheelEvent *wheelEvent, void *userData) +{ + SDL_WindowData *window_data = userData; + + float deltaY = wheelEvent->deltaY; + float deltaX = wheelEvent->deltaX; + + switch (wheelEvent->deltaMode) { + case DOM_DELTA_PIXEL: + deltaX /= 100; // 100 pixels make up a step + deltaY /= 100; // 100 pixels make up a step + break; + case DOM_DELTA_LINE: + deltaX /= 3; // 3 lines make up a step + deltaY /= 3; // 3 lines make up a step + break; + case DOM_DELTA_PAGE: + deltaX *= 80; // A page makes up 80 steps + deltaY *= 80; // A page makes up 80 steps + break; + } + + SDL_SendMouseWheel(0, window_data->window, SDL_DEFAULT_MOUSE_ID, deltaX, -deltaY, SDL_MOUSEWHEEL_NORMAL); + return SDL_EventEnabled(SDL_EVENT_MOUSE_WHEEL); +} + +static EM_BOOL Emscripten_HandleFocus(int eventType, const EmscriptenFocusEvent *wheelEvent, void *userData) +{ + SDL_WindowData *window_data = userData; + SDL_EventType sdl_event_type; + + /* If the user switches away while keys are pressed (such as + * via Alt+Tab), key release events won't be received. */ + if (eventType == EMSCRIPTEN_EVENT_BLUR) { + SDL_ResetKeyboard(); + } + + sdl_event_type = (eventType == EMSCRIPTEN_EVENT_FOCUS) ? SDL_EVENT_WINDOW_FOCUS_GAINED : SDL_EVENT_WINDOW_FOCUS_LOST; + SDL_SetKeyboardFocus(sdl_event_type == SDL_EVENT_WINDOW_FOCUS_GAINED ? window_data->window : NULL); + return SDL_EventEnabled(sdl_event_type); +} + +static EM_BOOL Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData) +{ + SDL_WindowData *window_data = (SDL_WindowData *)userData; + int i; + double client_w, client_h; + int preventDefault = 0; + + const SDL_TouchID deviceId = 1; + if (SDL_AddTouch(deviceId, SDL_TOUCH_DEVICE_DIRECT, "") < 0) { + return 0; + } + + emscripten_get_element_css_size(window_data->canvas_id, &client_w, &client_h); + + for (i = 0; i < touchEvent->numTouches; i++) { + SDL_FingerID id; + float x, y; + + if (!touchEvent->touches[i].isChanged) { + continue; + } + + id = touchEvent->touches[i].identifier + 1; + if (client_w <= 1) { + x = 0.5f; + } else { + x = touchEvent->touches[i].targetX / (client_w - 1); + } + if (client_h <= 1) { + y = 0.5f; + } else { + y = touchEvent->touches[i].targetY / (client_h - 1); + } + + if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) { + SDL_SendTouch(0, deviceId, id, window_data->window, SDL_EVENT_FINGER_DOWN, x, y, 1.0f); + + // disable browser scrolling/pinch-to-zoom if app handles touch events + if (!preventDefault && SDL_EventEnabled(SDL_EVENT_FINGER_DOWN)) { + preventDefault = 1; + } + } else if (eventType == EMSCRIPTEN_EVENT_TOUCHMOVE) { + SDL_SendTouchMotion(0, deviceId, id, window_data->window, x, y, 1.0f); + } else if (eventType == EMSCRIPTEN_EVENT_TOUCHEND) { + SDL_SendTouch(0, deviceId, id, window_data->window, SDL_EVENT_FINGER_UP, x, y, 1.0f); + + // block browser's simulated mousedown/mouseup on touchscreen devices + preventDefault = 1; + } else if (eventType == EMSCRIPTEN_EVENT_TOUCHCANCEL) { + SDL_SendTouch(0, deviceId, id, window_data->window, SDL_EVENT_FINGER_CANCELED, x, y, 1.0f); + } + } + + return preventDefault; +} + +static bool IsFunctionKey(SDL_Scancode scancode) +{ + if (scancode >= SDL_SCANCODE_F1 && scancode <= SDL_SCANCODE_F12) { + return true; + } + if (scancode >= SDL_SCANCODE_F13 && scancode <= SDL_SCANCODE_F24) { + return true; + } + return false; +} + +/* This is a great tool to see web keyboard events live: + * https://w3c.github.io/uievents/tools/key-event-viewer.html + */ +static EM_BOOL Emscripten_HandleKey(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData) +{ + SDL_WindowData *window_data = (SDL_WindowData *)userData; + SDL_Scancode scancode = Emscripten_MapScanCode(keyEvent->code); + SDL_Keycode keycode = SDLK_UNKNOWN; + bool prevent_default = false; + bool is_nav_key = false; + + if (scancode == SDL_SCANCODE_UNKNOWN) { + if (SDL_strcmp(keyEvent->key, "Sleep") == 0) { + scancode = SDL_SCANCODE_SLEEP; + } else if (SDL_strcmp(keyEvent->key, "ChannelUp") == 0) { + scancode = SDL_SCANCODE_CHANNEL_INCREMENT; + } else if (SDL_strcmp(keyEvent->key, "ChannelDown") == 0) { + scancode = SDL_SCANCODE_CHANNEL_DECREMENT; + } else if (SDL_strcmp(keyEvent->key, "MediaPlay") == 0) { + scancode = SDL_SCANCODE_MEDIA_PLAY; + } else if (SDL_strcmp(keyEvent->key, "MediaPause") == 0) { + scancode = SDL_SCANCODE_MEDIA_PAUSE; + } else if (SDL_strcmp(keyEvent->key, "MediaRecord") == 0) { + scancode = SDL_SCANCODE_MEDIA_RECORD; + } else if (SDL_strcmp(keyEvent->key, "MediaFastForward") == 0) { + scancode = SDL_SCANCODE_MEDIA_FAST_FORWARD; + } else if (SDL_strcmp(keyEvent->key, "MediaRewind") == 0) { + scancode = SDL_SCANCODE_MEDIA_REWIND; + } else if (SDL_strcmp(keyEvent->key, "Close") == 0) { + scancode = SDL_SCANCODE_AC_CLOSE; + } else if (SDL_strcmp(keyEvent->key, "New") == 0) { + scancode = SDL_SCANCODE_AC_NEW; + } else if (SDL_strcmp(keyEvent->key, "Open") == 0) { + scancode = SDL_SCANCODE_AC_OPEN; + } else if (SDL_strcmp(keyEvent->key, "Print") == 0) { + scancode = SDL_SCANCODE_AC_PRINT; + } else if (SDL_strcmp(keyEvent->key, "Save") == 0) { + scancode = SDL_SCANCODE_AC_SAVE; + } else if (SDL_strcmp(keyEvent->key, "Props") == 0) { + scancode = SDL_SCANCODE_AC_PROPERTIES; + } + } + + if (scancode == SDL_SCANCODE_UNKNOWN) { + // KaiOS Left Soft Key and Right Soft Key, they act as OK/Next/Menu and Cancel/Back/Clear + if (SDL_strcmp(keyEvent->key, "SoftLeft") == 0) { + scancode = SDL_SCANCODE_AC_FORWARD; + } else if (SDL_strcmp(keyEvent->key, "SoftRight") == 0) { + scancode = SDL_SCANCODE_AC_BACK; + } + } + + if (keyEvent->location == 0 && SDL_utf8strlen(keyEvent->key) == 1) { + const char *key = keyEvent->key; + keycode = SDL_StepUTF8(&key, NULL); + if (keycode == SDL_INVALID_UNICODE_CODEPOINT) { + keycode = SDLK_UNKNOWN; + } + } + + if (keycode != SDLK_UNKNOWN) { + prevent_default = SDL_SendKeyboardKeyAndKeycode(0, SDL_DEFAULT_KEYBOARD_ID, 0, scancode, keycode, (eventType == EMSCRIPTEN_EVENT_KEYDOWN)); + } else { + prevent_default = SDL_SendKeyboardKey(0, SDL_DEFAULT_KEYBOARD_ID, 0, scancode, (eventType == EMSCRIPTEN_EVENT_KEYDOWN)); + } + + /* if TEXTINPUT events are enabled we can't prevent keydown or we won't get keypress + * we need to ALWAYS prevent backspace and tab otherwise chrome takes action and does bad navigation UX + */ + if ((scancode == SDL_SCANCODE_BACKSPACE) || + (scancode == SDL_SCANCODE_TAB) || + (scancode == SDL_SCANCODE_LEFT) || + (scancode == SDL_SCANCODE_UP) || + (scancode == SDL_SCANCODE_RIGHT) || + (scancode == SDL_SCANCODE_DOWN) || + IsFunctionKey(scancode) || + keyEvent->ctrlKey) { + is_nav_key = true; + } + + if ((eventType == EMSCRIPTEN_EVENT_KEYDOWN) && SDL_TextInputActive(window_data->window) && !is_nav_key) { + prevent_default = false; + } + + return prevent_default; +} + +static EM_BOOL Emscripten_HandleKeyPress(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData) +{ + SDL_WindowData *window_data = (SDL_WindowData *)userData; + + if (SDL_TextInputActive(window_data->window)) { + char text[5]; + char *end = SDL_UCS4ToUTF8(keyEvent->charCode, text); + *end = '\0'; + SDL_SendKeyboardText(text); + return EM_TRUE; + } + return EM_FALSE; +} + +static EM_BOOL Emscripten_HandleFullscreenChange(int eventType, const EmscriptenFullscreenChangeEvent *fullscreenChangeEvent, void *userData) +{ + SDL_WindowData *window_data = userData; + + if (fullscreenChangeEvent->isFullscreen) { + SDL_SendWindowEvent(window_data->window, SDL_EVENT_WINDOW_ENTER_FULLSCREEN, 0, 0); + window_data->fullscreen_mode_flags = 0; + } else { + SDL_SendWindowEvent(window_data->window, SDL_EVENT_WINDOW_LEAVE_FULLSCREEN, 0, 0); + } + + SDL_UpdateFullscreenMode(window_data->window, fullscreenChangeEvent->isFullscreen, false); + + return 0; +} + +static EM_BOOL Emscripten_HandleResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData) +{ + SDL_WindowData *window_data = userData; + bool force = false; + + // update pixel ratio + if (window_data->window->flags & SDL_WINDOW_HIGH_PIXEL_DENSITY) { + if (window_data->pixel_ratio != emscripten_get_device_pixel_ratio()) { + window_data->pixel_ratio = emscripten_get_device_pixel_ratio(); + force = true; + } + } + + if (!(window_data->window->flags & SDL_WINDOW_FULLSCREEN)) { + // this will only work if the canvas size is set through css + if (window_data->window->flags & SDL_WINDOW_RESIZABLE) { + double w = window_data->window->w; + double h = window_data->window->h; + + if (window_data->external_size) { + emscripten_get_element_css_size(window_data->canvas_id, &w, &h); + } + + emscripten_set_canvas_element_size(window_data->canvas_id, SDL_lroundf(w * window_data->pixel_ratio), SDL_lroundf(h * window_data->pixel_ratio)); + + // set_canvas_size unsets this + if (!window_data->external_size && window_data->pixel_ratio != 1.0f) { + emscripten_set_element_css_size(window_data->canvas_id, w, h); + } + + if (force) { + // force the event to trigger, so pixel ratio changes can be handled + window_data->window->w = 0; + window_data->window->h = 0; + } + + SDL_SendWindowEvent(window_data->window, SDL_EVENT_WINDOW_RESIZED, SDL_lroundf(w), SDL_lroundf(h)); + } + } + + return 0; +} + +EM_BOOL +Emscripten_HandleCanvasResize(int eventType, const void *reserved, void *userData) +{ + // this is used during fullscreen changes + SDL_WindowData *window_data = userData; + + if (window_data->fullscreen_resize) { + double css_w, css_h; + emscripten_get_element_css_size(window_data->canvas_id, &css_w, &css_h); + SDL_SendWindowEvent(window_data->window, SDL_EVENT_WINDOW_RESIZED, SDL_lroundf(css_w), SDL_lroundf(css_h)); + } + + return 0; +} + +static EM_BOOL Emscripten_HandleVisibilityChange(int eventType, const EmscriptenVisibilityChangeEvent *visEvent, void *userData) +{ + SDL_WindowData *window_data = userData; + SDL_SendWindowEvent(window_data->window, visEvent->hidden ? SDL_EVENT_WINDOW_HIDDEN : SDL_EVENT_WINDOW_SHOWN, 0, 0); + return 0; +} + +static const char *Emscripten_HandleBeforeUnload(int eventType, const void *reserved, void *userData) +{ + /* This event will need to be handled synchronously, e.g. using + SDL_AddEventWatch, as the page is being closed *now*. */ + // No need to send a SDL_EVENT_QUIT, the app won't get control again. + SDL_SendAppEvent(SDL_EVENT_TERMINATING); + return ""; // don't trigger confirmation dialog +} + +static EM_BOOL Emscripten_HandleOrientationChange(int eventType, const EmscriptenOrientationChangeEvent *orientationChangeEvent, void *userData) +{ + SDL_DisplayOrientation orientation; + switch (orientationChangeEvent->orientationIndex) { + #define CHECK_ORIENTATION(emsdk, sdl) case EMSCRIPTEN_ORIENTATION_##emsdk: orientation = SDL_ORIENTATION_##sdl; break + CHECK_ORIENTATION(LANDSCAPE_PRIMARY, LANDSCAPE); + CHECK_ORIENTATION(LANDSCAPE_SECONDARY, LANDSCAPE_FLIPPED); + CHECK_ORIENTATION(PORTRAIT_PRIMARY, PORTRAIT); + CHECK_ORIENTATION(PORTRAIT_SECONDARY, PORTRAIT_FLIPPED); + #undef CHECK_ORIENTATION + default: orientation = SDL_ORIENTATION_UNKNOWN; break; + } + + SDL_WindowData *window_data = (SDL_WindowData *) userData; + SDL_SendDisplayEvent(SDL_GetVideoDisplayForWindow(window_data->window), SDL_EVENT_DISPLAY_ORIENTATION, orientation, 0); + + return 0; +} + +// IF YOU CHANGE THIS STRUCTURE, YOU NEED TO UPDATE THE JAVASCRIPT THAT FILLS IT IN: makePointerEventCStruct, below. +typedef struct Emscripten_PointerEvent +{ + int pointerid; + int button; + int buttons; + float movementX; + float movementY; + float targetX; + float targetY; + float pressure; + float tangential_pressure; + float tiltx; + float tilty; + float rotation; +} Emscripten_PointerEvent; + +static void Emscripten_UpdatePointerFromEvent(SDL_WindowData *window_data, const Emscripten_PointerEvent *event) +{ + const SDL_PenID pen = SDL_FindPenByHandle((void *) (size_t) event->pointerid); + if (pen) { + // rescale (in case canvas is being scaled) + double client_w, client_h; + emscripten_get_element_css_size(window_data->canvas_id, &client_w, &client_h); + const double xscale = window_data->window->w / client_w; + const double yscale = window_data->window->h / client_h; + + const bool isPointerLocked = window_data->has_pointer_lock; + float mx, my; + if (isPointerLocked) { + mx = (float)(event->movementX * xscale); + my = (float)(event->movementY * yscale); + } else { + mx = (float)(event->targetX * xscale); + my = (float)(event->targetY * yscale); + } + + SDL_SendPenMotion(0, pen, window_data->window, mx, my); + + if (event->button == 0) { // pen touch + bool down = ((event->buttons & 1) != 0); + SDL_SendPenTouch(0, pen, window_data->window, false, down); + } else if (event->button == 5) { // eraser touch...? Not sure if this is right... + bool down = ((event->buttons & 32) != 0); + SDL_SendPenTouch(0, pen, window_data->window, true, down); + } else if (event->button == 1) { + bool down = ((event->buttons & 4) != 0); + SDL_SendPenButton(0, pen, window_data->window, 2, down); + } else if (event->button == 2) { + bool down = ((event->buttons & 2) != 0); + SDL_SendPenButton(0, pen, window_data->window, 1, down); + } + + SDL_SendPenAxis(0, pen, window_data->window, SDL_PEN_AXIS_PRESSURE, event->pressure); + SDL_SendPenAxis(0, pen, window_data->window, SDL_PEN_AXIS_TANGENTIAL_PRESSURE, event->tangential_pressure); + SDL_SendPenAxis(0, pen, window_data->window, SDL_PEN_AXIS_XTILT, event->tiltx); + SDL_SendPenAxis(0, pen, window_data->window, SDL_PEN_AXIS_YTILT, event->tilty); + SDL_SendPenAxis(0, pen, window_data->window, SDL_PEN_AXIS_ROTATION, event->rotation); + } +} + +EMSCRIPTEN_KEEPALIVE void Emscripten_HandlePointerEnter(SDL_WindowData *window_data, const Emscripten_PointerEvent *event) +{ + // Web browsers offer almost none of this information as specifics, but can without warning offer any of these specific things. + SDL_PenInfo peninfo; + SDL_zero(peninfo); + peninfo.capabilities = SDL_PEN_CAPABILITY_PRESSURE | SDL_PEN_CAPABILITY_ROTATION | SDL_PEN_CAPABILITY_XTILT | SDL_PEN_CAPABILITY_YTILT | SDL_PEN_CAPABILITY_TANGENTIAL_PRESSURE | SDL_PEN_CAPABILITY_ERASER; + peninfo.max_tilt = 90.0f; + peninfo.num_buttons = 2; + peninfo.subtype = SDL_PEN_TYPE_PEN; + SDL_AddPenDevice(0, NULL, &peninfo, (void *) (size_t) event->pointerid); + Emscripten_UpdatePointerFromEvent(window_data, event); +} + +EMSCRIPTEN_KEEPALIVE void Emscripten_HandlePointerLeave(SDL_WindowData *window_data, const Emscripten_PointerEvent *event) +{ + const SDL_PenID pen = SDL_FindPenByHandle((void *) (size_t) event->pointerid); + if (pen) { + Emscripten_UpdatePointerFromEvent(window_data, event); // last data updates? + SDL_RemovePenDevice(0, pen); + } +} + +EMSCRIPTEN_KEEPALIVE void Emscripten_HandlePointerGeneric(SDL_WindowData *window_data, const Emscripten_PointerEvent *event) +{ + Emscripten_UpdatePointerFromEvent(window_data, event); +} + +static void Emscripten_set_pointer_event_callbacks(SDL_WindowData *data) +{ + MAIN_THREAD_EM_ASM({ + var target = document.querySelector(UTF8ToString($1)); + if (target) { + var data = $0; + + if (typeof(Module['SDL3']) === 'undefined') { + Module['SDL3'] = {}; + } + var SDL3 = Module['SDL3']; + + var makePointerEventCStruct = function(event) { + var ptr = 0; + if (event.pointerType == "pen") { + ptr = _SDL_malloc($2); + if (ptr != 0) { + var rect = target.getBoundingClientRect(); + var idx = ptr >> 2; + HEAP32[idx++] = event.pointerId; + HEAP32[idx++] = (typeof(event.button) !== "undefined") ? event.button : -1; + HEAP32[idx++] = event.buttons; + HEAPF32[idx++] = event.movementX; + HEAPF32[idx++] = event.movementY; + HEAPF32[idx++] = event.clientX - rect.left; + HEAPF32[idx++] = event.clientY - rect.top; + HEAPF32[idx++] = event.pressure; + HEAPF32[idx++] = event.tangentialPressure; + HEAPF32[idx++] = event.tiltX; + HEAPF32[idx++] = event.tiltY; + HEAPF32[idx++] = event.twist; + } + } + return ptr; + }; + + SDL3.eventHandlerPointerEnter = function(event) { + var d = makePointerEventCStruct(event); if (d != 0) { _Emscripten_HandlePointerEnter(data, d); _SDL_free(d); } + }; + target.addEventListener("pointerenter", SDL3.eventHandlerPointerEnter); + + SDL3.eventHandlerPointerLeave = function(event) { + var d = makePointerEventCStruct(event); if (d != 0) { _Emscripten_HandlePointerLeave(data, d); _SDL_free(d); } + }; + target.addEventListener("pointerleave", SDL3.eventHandlerPointerLeave); + target.addEventListener("pointercancel", SDL3.eventHandlerPointerLeave); // catch this, just in case. + + SDL3.eventHandlerPointerGeneric = function(event) { + var d = makePointerEventCStruct(event); if (d != 0) { _Emscripten_HandlePointerGeneric(data, d); _SDL_free(d); } + }; + target.addEventListener("pointerdown", SDL3.eventHandlerPointerGeneric); + target.addEventListener("pointerup", SDL3.eventHandlerPointerGeneric); + target.addEventListener("pointermove", SDL3.eventHandlerPointerGeneric); + } + }, data, data->canvas_id, sizeof (Emscripten_PointerEvent)); +} + +static void Emscripten_unset_pointer_event_callbacks(SDL_WindowData *data) +{ + MAIN_THREAD_EM_ASM({ + var target = document.querySelector(UTF8ToString($0)); + if (target) { + var SDL3 = Module['SDL3']; + target.removeEventListener("pointerenter", SDL3.eventHandlerPointerEnter); + target.removeEventListener("pointerleave", SDL3.eventHandlerPointerLeave); + target.removeEventListener("pointercancel", SDL3.eventHandlerPointerLeave); + target.removeEventListener("pointerdown", SDL3.eventHandlerPointerGeneric); + target.removeEventListener("pointerup", SDL3.eventHandlerPointerGeneric); + target.removeEventListener("pointermove", SDL3.eventHandlerPointerGeneric); + SDL3.eventHandlerPointerEnter = undefined; + SDL3.eventHandlerPointerLeave = undefined; + SDL3.eventHandlerPointerGeneric = undefined; + } + }, data->canvas_id); +} + +// IF YOU CHANGE THIS STRUCTURE, YOU NEED TO UPDATE THE JAVASCRIPT THAT FILLS IT IN: makeDropEventCStruct, below. +typedef struct Emscripten_DropEvent +{ + int x; + int y; +} Emscripten_DropEvent; + +EMSCRIPTEN_KEEPALIVE void Emscripten_SendDragEvent(SDL_WindowData *window_data, const Emscripten_DropEvent *event) +{ + SDL_SendDropPosition(window_data->window, event->x, event->y); +} + +EMSCRIPTEN_KEEPALIVE void Emscripten_SendDragCompleteEvent(SDL_WindowData *window_data) +{ + SDL_SendDropComplete(window_data->window); +} + +EMSCRIPTEN_KEEPALIVE void Emscripten_SendDragTextEvent(SDL_WindowData *window_data, char *text) +{ + SDL_SendDropText(window_data->window, text); +} + +EMSCRIPTEN_KEEPALIVE void Emscripten_SendDragFileEvent(SDL_WindowData *window_data, char *filename) +{ + SDL_SendDropFile(window_data->window, NULL, filename); +} + +EM_JS_DEPS(dragndrop, "$writeArrayToMemory"); + +static void Emscripten_set_drag_event_callbacks(SDL_WindowData *data) +{ + MAIN_THREAD_EM_ASM({ + var target = document.querySelector(UTF8ToString($1)); + if (target) { + var data = $0; + + if (typeof(Module['SDL3']) === 'undefined') { + Module['SDL3'] = {}; + } + var SDL3 = Module['SDL3']; + + var makeDropEventCStruct = function(event) { + var ptr = 0; + ptr = _SDL_malloc($2); + if (ptr != 0) { + var idx = ptr >> 2; + var rect = target.getBoundingClientRect(); + HEAP32[idx++] = event.clientX - rect.left; + HEAP32[idx++] = event.clientY - rect.top; + } + return ptr; + }; + + SDL3.eventHandlerDropDragover = function(event) { + event.preventDefault(); + var d = makeDropEventCStruct(event); if (d != 0) { _Emscripten_SendDragEvent(data, d); _SDL_free(d); } + }; + target.addEventListener("dragover", SDL3.eventHandlerDropDragover); + + SDL3.drop_count = 0; + FS.mkdir("/tmp/filedrop"); + SDL3.eventHandlerDropDrop = function(event) { + event.preventDefault(); + if (event.dataTransfer.types.includes("text/plain")) { + let plain_text = stringToNewUTF8(event.dataTransfer.getData("text/plain")); + _Emscripten_SendDragTextEvent(data, plain_text); + _free(plain_text); + } else if (event.dataTransfer.types.includes("Files")) { + for (let i = 0; i < event.dataTransfer.files.length; i++) { + const file = event.dataTransfer.files.item(i); + const file_reader = new FileReader(); + file_reader.readAsArrayBuffer(file); + file_reader.onload = function(event) { + const fs_dropdir = `/tmp/filedrop/${SDL3.drop_count}`; + SDL3.drop_count += 1; + + const fs_filepath = `${fs_dropdir}/${file.name}`; + const c_fs_filepath = stringToNewUTF8(fs_filepath); + const contents_array8 = new Uint8Array(event.target.result); + + FS.mkdir(fs_dropdir); + var stream = FS.open(fs_filepath, "w"); + FS.write(stream, contents_array8, 0, contents_array8.length, 0); + FS.close(stream); + + _Emscripten_SendDragFileEvent(data, c_fs_filepath); + _free(c_fs_filepath); + _Emscripten_SendDragCompleteEvent(data); + }; + } + } + _Emscripten_SendDragCompleteEvent(data); + }; + target.addEventListener("drop", SDL3.eventHandlerDropDrop); + + SDL3.eventHandlerDropDragend = function(event) { + event.preventDefault(); + _Emscripten_SendDragCompleteEvent(data); + }; + target.addEventListener("dragend", SDL3.eventHandlerDropDragend); + target.addEventListener("dragleave", SDL3.eventHandlerDropDragend); + } + }, data, data->canvas_id, sizeof (Emscripten_DropEvent)); +} + +static void Emscripten_unset_drag_event_callbacks(SDL_WindowData *data) +{ + MAIN_THREAD_EM_ASM({ + var target = document.querySelector(UTF8ToString($0)); + if (target) { + var SDL3 = Module['SDL3']; + target.removeEventListener("dragleave", SDL3.eventHandlerDropDragend); + target.removeEventListener("dragend", SDL3.eventHandlerDropDragend); + target.removeEventListener("drop", SDL3.eventHandlerDropDrop); + SDL3.drop_count = undefined; + + function recursive_remove(dirpath) { + FS.readdir(dirpath).forEach((filename) => { + const p = `${dirpath}/${filename}`; + const p_s = FS.stat(p); + if (FS.isFile(p_s.mode)) { + FS.unlink(p); + } else if (FS.isDir(p)) { + recursive_remove(p); + } + }); + FS.rmdir(dirpath); + }("/tmp/filedrop"); + + FS.rmdir("/tmp/filedrop"); + target.removeEventListener("dragover", SDL3.eventHandlerDropDragover); + SDL3.eventHandlerDropDragover = undefined; + SDL3.eventHandlerDropDrop = undefined; + SDL3.eventHandlerDropDragend = undefined; + } + }, data->canvas_id); +} + +void Emscripten_RegisterEventHandlers(SDL_WindowData *data) +{ + const char *keyElement; + + // There is only one window and that window is the canvas + emscripten_set_mousemove_callback(data->canvas_id, data, 0, Emscripten_HandleMouseMove); + + emscripten_set_mousedown_callback(data->canvas_id, data, 0, Emscripten_HandleMouseButton); + emscripten_set_mouseup_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, data, 0, Emscripten_HandleMouseButton); + + emscripten_set_mouseenter_callback(data->canvas_id, data, 0, Emscripten_HandleMouseFocus); + emscripten_set_mouseleave_callback(data->canvas_id, data, 0, Emscripten_HandleMouseFocus); + + emscripten_set_wheel_callback(data->canvas_id, data, 0, Emscripten_HandleWheel); + + emscripten_set_focus_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, data, 0, Emscripten_HandleFocus); + emscripten_set_blur_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, data, 0, Emscripten_HandleFocus); + + emscripten_set_orientationchange_callback(data, 0, Emscripten_HandleOrientationChange); + + emscripten_set_touchstart_callback(data->canvas_id, data, 0, Emscripten_HandleTouch); + emscripten_set_touchend_callback(data->canvas_id, data, 0, Emscripten_HandleTouch); + emscripten_set_touchmove_callback(data->canvas_id, data, 0, Emscripten_HandleTouch); + emscripten_set_touchcancel_callback(data->canvas_id, data, 0, Emscripten_HandleTouch); + + emscripten_set_pointerlockchange_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, data, 0, Emscripten_HandlePointerLockChange); + + // Keyboard events are awkward + keyElement = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT); + if (!keyElement || !*keyElement) { + keyElement = EMSCRIPTEN_EVENT_TARGET_WINDOW; + } + + if (SDL_strcmp(keyElement, "#none") != 0) { + emscripten_set_keydown_callback(keyElement, data, 0, Emscripten_HandleKey); + emscripten_set_keyup_callback(keyElement, data, 0, Emscripten_HandleKey); + emscripten_set_keypress_callback(keyElement, data, 0, Emscripten_HandleKeyPress); + } + + emscripten_set_fullscreenchange_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, data, 0, Emscripten_HandleFullscreenChange); + + emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, data, 0, Emscripten_HandleResize); + + emscripten_set_visibilitychange_callback(data, 0, Emscripten_HandleVisibilityChange); + + emscripten_set_beforeunload_callback(data, Emscripten_HandleBeforeUnload); + + // !!! FIXME: currently Emscripten doesn't have a Pointer Events functions like emscripten_set_*_callback, but we should use those when they do: + // !!! FIXME: https://github.com/emscripten-core/emscripten/issues/7278#issuecomment-2280024621 + Emscripten_set_pointer_event_callbacks(data); + + // !!! FIXME: currently Emscripten doesn't have a Drop Events functions like emscripten_set_*_callback, but we should use those when they do: + Emscripten_set_drag_event_callbacks(data); +} + +void Emscripten_UnregisterEventHandlers(SDL_WindowData *data) +{ + const char *target; + + // !!! FIXME: currently Emscripten doesn't have a Drop Events functions like emscripten_set_*_callback, but we should use those when they do: + Emscripten_unset_drag_event_callbacks(data); + + // !!! FIXME: currently Emscripten doesn't have a Pointer Events functions like emscripten_set_*_callback, but we should use those when they do: + // !!! FIXME: https://github.com/emscripten-core/emscripten/issues/7278#issuecomment-2280024621 + Emscripten_unset_pointer_event_callbacks(data); + + // only works due to having one window + emscripten_set_mousemove_callback(data->canvas_id, NULL, 0, NULL); + + emscripten_set_mousedown_callback(data->canvas_id, NULL, 0, NULL); + emscripten_set_mouseup_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, NULL, 0, NULL); + + emscripten_set_mouseenter_callback(data->canvas_id, NULL, 0, NULL); + emscripten_set_mouseleave_callback(data->canvas_id, NULL, 0, NULL); + + emscripten_set_wheel_callback(data->canvas_id, NULL, 0, NULL); + + emscripten_set_focus_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, NULL, 0, NULL); + emscripten_set_blur_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, NULL, 0, NULL); + + emscripten_set_orientationchange_callback(NULL, 0, NULL); + + emscripten_set_touchstart_callback(data->canvas_id, NULL, 0, NULL); + emscripten_set_touchend_callback(data->canvas_id, NULL, 0, NULL); + emscripten_set_touchmove_callback(data->canvas_id, NULL, 0, NULL); + emscripten_set_touchcancel_callback(data->canvas_id, NULL, 0, NULL); + + emscripten_set_pointerlockchange_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, NULL, 0, NULL); + + target = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT); + if (!target || !*target) { + target = EMSCRIPTEN_EVENT_TARGET_WINDOW; + } + + if (SDL_strcmp(target, "#none") != 0) { + emscripten_set_keydown_callback(target, NULL, 0, NULL); + emscripten_set_keyup_callback(target, NULL, 0, NULL); + emscripten_set_keypress_callback(target, NULL, 0, NULL); + } + + emscripten_set_fullscreenchange_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, NULL, 0, NULL); + + emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, NULL, 0, NULL); + + emscripten_set_visibilitychange_callback(NULL, 0, NULL); + + emscripten_set_beforeunload_callback(NULL, NULL); +} + +#endif // SDL_VIDEO_DRIVER_EMSCRIPTEN -- cgit v1.2.3