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https://github.com/libsdl-org/SDL.git
synced 2025-09-05 19:08:12 +00:00
Added support for non-US keyboard layouts in Emscripten
This commit is contained in:
Sam Lantinga
@@ -33,237 +33,6 @@
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#include "SDL_emscriptenevents.h"
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#include "SDL_emscriptenvideo.h"
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/*
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.keyCode to SDL keycode
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https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent
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https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode
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*/
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static const SDL_Keycode emscripten_keycode_table[] = {
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/* 0, 0x00 */ SDLK_UNKNOWN,
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/* 1, 0x01 */ SDLK_UNKNOWN,
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/* 2, 0x02 */ SDLK_UNKNOWN,
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/* 3, 0x03 */ SDLK_CANCEL,
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/* 4, 0x04 */ SDLK_UNKNOWN,
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/* 5, 0x05 */ SDLK_UNKNOWN,
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/* 6, 0x06 */ SDLK_HELP,
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/* 7, 0x07 */ SDLK_UNKNOWN,
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/* 8, 0x08 */ SDLK_BACKSPACE,
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/* 9, 0x09 */ SDLK_TAB,
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/* 10, 0x0a */ SDLK_UNKNOWN,
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/* 11, 0x0b */ SDLK_UNKNOWN,
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/* 12, 0x0c */ SDLK_KP_EQUALS,
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/* 13, 0x0d */ SDLK_RETURN,
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/* 14, 0x0e */ SDLK_UNKNOWN,
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/* 15, 0x0f */ SDLK_UNKNOWN,
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/* 16, 0x10 */ SDLK_LSHIFT,
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/* 17, 0x11 */ SDLK_LCTRL,
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/* 18, 0x12 */ SDLK_LALT,
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/* 19, 0x13 */ SDLK_PAUSE,
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/* 20, 0x14 */ SDLK_CAPSLOCK,
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/* 21, 0x15 */ SDLK_UNKNOWN,
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/* 22, 0x16 */ SDLK_UNKNOWN,
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/* 23, 0x17 */ SDLK_UNKNOWN,
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/* 24, 0x18 */ SDLK_UNKNOWN,
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/* 25, 0x19 */ SDLK_UNKNOWN,
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/* 26, 0x1a */ SDLK_UNKNOWN,
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/* 27, 0x1b */ SDLK_ESCAPE,
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/* 28, 0x1c */ SDLK_UNKNOWN,
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/* 29, 0x1d */ SDLK_UNKNOWN,
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/* 30, 0x1e */ SDLK_UNKNOWN,
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/* 31, 0x1f */ SDLK_UNKNOWN,
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/* 32, 0x20 */ SDLK_SPACE,
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/* 33, 0x21 */ SDLK_PAGEUP,
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/* 34, 0x22 */ SDLK_PAGEDOWN,
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/* 35, 0x23 */ SDLK_END,
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/* 36, 0x24 */ SDLK_HOME,
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/* 37, 0x25 */ SDLK_LEFT,
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/* 38, 0x26 */ SDLK_UP,
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/* 39, 0x27 */ SDLK_RIGHT,
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/* 40, 0x28 */ SDLK_DOWN,
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/* 41, 0x29 */ SDLK_UNKNOWN,
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/* 42, 0x2a */ SDLK_UNKNOWN,
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/* 43, 0x2b */ SDLK_UNKNOWN,
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/* 44, 0x2c */ SDLK_UNKNOWN,
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/* 45, 0x2d */ SDLK_INSERT,
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/* 46, 0x2e */ SDLK_DELETE,
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/* 47, 0x2f */ SDLK_UNKNOWN,
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/* 48, 0x30 */ SDLK_0,
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/* 49, 0x31 */ SDLK_1,
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/* 50, 0x32 */ SDLK_2,
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/* 51, 0x33 */ SDLK_3,
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/* 52, 0x34 */ SDLK_4,
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/* 53, 0x35 */ SDLK_5,
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/* 54, 0x36 */ SDLK_6,
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/* 55, 0x37 */ SDLK_7,
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/* 56, 0x38 */ SDLK_8,
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/* 57, 0x39 */ SDLK_9,
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/* 58, 0x3a */ SDLK_UNKNOWN,
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/* 59, 0x3b */ SDLK_SEMICOLON,
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/* 60, 0x3c */ SDLK_BACKSLASH /*SDL_SCANCODE_NONUSBACKSLASH*/,
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/* 61, 0x3d */ SDLK_EQUALS,
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/* 62, 0x3e */ SDLK_UNKNOWN,
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/* 63, 0x3f */ SDLK_MINUS,
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/* 64, 0x40 */ SDLK_UNKNOWN,
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/* 65, 0x41 */ SDLK_A,
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/* 66, 0x42 */ SDLK_B,
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/* 67, 0x43 */ SDLK_C,
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/* 68, 0x44 */ SDLK_D,
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/* 69, 0x45 */ SDLK_E,
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/* 70, 0x46 */ SDLK_F,
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/* 71, 0x47 */ SDLK_G,
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/* 72, 0x48 */ SDLK_H,
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/* 73, 0x49 */ SDLK_I,
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/* 74, 0x4a */ SDLK_J,
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/* 75, 0x4b */ SDLK_K,
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/* 76, 0x4c */ SDLK_L,
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/* 77, 0x4d */ SDLK_M,
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/* 78, 0x4e */ SDLK_N,
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/* 79, 0x4f */ SDLK_O,
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/* 80, 0x50 */ SDLK_P,
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/* 81, 0x51 */ SDLK_Q,
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/* 82, 0x52 */ SDLK_R,
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/* 83, 0x53 */ SDLK_S,
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/* 84, 0x54 */ SDLK_T,
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/* 85, 0x55 */ SDLK_U,
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/* 86, 0x56 */ SDLK_V,
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/* 87, 0x57 */ SDLK_W,
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/* 88, 0x58 */ SDLK_X,
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/* 89, 0x59 */ SDLK_Y,
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/* 90, 0x5a */ SDLK_Z,
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/* 91, 0x5b */ SDLK_LGUI,
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/* 92, 0x5c */ SDLK_UNKNOWN,
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/* 93, 0x5d */ SDLK_APPLICATION,
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/* 94, 0x5e */ SDLK_UNKNOWN,
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/* 95, 0x5f */ SDLK_UNKNOWN,
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/* 96, 0x60 */ SDLK_0, /* SDLK_KP_0 */
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/* 97, 0x61 */ SDLK_1, /* SDLK_KP_1 */
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/* 98, 0x62 */ SDLK_2, /* SDLK_KP_2 */
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/* 99, 0x63 */ SDLK_3, /* SDLK_KP_3 */
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/* 100, 0x64 */ SDLK_4, /* SDLK_KP_4 */
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/* 101, 0x65 */ SDLK_5, /* SDLK_KP_5 */
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/* 102, 0x66 */ SDLK_6, /* SDLK_KP_6 */
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/* 103, 0x67 */ SDLK_7, /* SDLK_KP_7 */
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/* 104, 0x68 */ SDLK_8, /* SDLK_KP_8 */
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/* 105, 0x69 */ SDLK_9, /* SDLK_KP_9 */
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/* 106, 0x6a */ SDLK_KP_MULTIPLY,
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/* 107, 0x6b */ SDLK_KP_PLUS,
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/* 108, 0x6c */ SDLK_UNKNOWN,
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/* 109, 0x6d */ SDLK_KP_MINUS,
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/* 110, 0x6e */ SDLK_PERIOD, /* SDLK_KP_PERIOD */
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/* 111, 0x6f */ SDLK_KP_DIVIDE,
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/* 112, 0x70 */ SDLK_F1,
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/* 113, 0x71 */ SDLK_F2,
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/* 114, 0x72 */ SDLK_F3,
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/* 115, 0x73 */ SDLK_F4,
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/* 116, 0x74 */ SDLK_F5,
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/* 117, 0x75 */ SDLK_F6,
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/* 118, 0x76 */ SDLK_F7,
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/* 119, 0x77 */ SDLK_F8,
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/* 120, 0x78 */ SDLK_F9,
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/* 121, 0x79 */ SDLK_F10,
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/* 122, 0x7a */ SDLK_F11,
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/* 123, 0x7b */ SDLK_F12,
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/* 124, 0x7c */ SDLK_F13,
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/* 125, 0x7d */ SDLK_F14,
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/* 126, 0x7e */ SDLK_F15,
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/* 127, 0x7f */ SDLK_F16,
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/* 128, 0x80 */ SDLK_F17,
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/* 129, 0x81 */ SDLK_F18,
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/* 130, 0x82 */ SDLK_F19,
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/* 131, 0x83 */ SDLK_F20,
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/* 132, 0x84 */ SDLK_F21,
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/* 133, 0x85 */ SDLK_F22,
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/* 134, 0x86 */ SDLK_F23,
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/* 135, 0x87 */ SDLK_F24,
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/* 136, 0x88 */ SDLK_UNKNOWN,
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/* 137, 0x89 */ SDLK_UNKNOWN,
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/* 138, 0x8a */ SDLK_UNKNOWN,
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/* 139, 0x8b */ SDLK_UNKNOWN,
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/* 140, 0x8c */ SDLK_UNKNOWN,
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/* 141, 0x8d */ SDLK_UNKNOWN,
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/* 142, 0x8e */ SDLK_UNKNOWN,
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/* 143, 0x8f */ SDLK_UNKNOWN,
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/* 144, 0x90 */ SDLK_NUMLOCKCLEAR,
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/* 145, 0x91 */ SDLK_SCROLLLOCK,
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/* 146, 0x92 */ SDLK_UNKNOWN,
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/* 147, 0x93 */ SDLK_UNKNOWN,
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/* 148, 0x94 */ SDLK_UNKNOWN,
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/* 149, 0x95 */ SDLK_UNKNOWN,
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/* 150, 0x96 */ SDLK_UNKNOWN,
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/* 151, 0x97 */ SDLK_UNKNOWN,
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/* 152, 0x98 */ SDLK_UNKNOWN,
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/* 153, 0x99 */ SDLK_UNKNOWN,
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/* 154, 0x9a */ SDLK_UNKNOWN,
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/* 155, 0x9b */ SDLK_UNKNOWN,
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/* 156, 0x9c */ SDLK_UNKNOWN,
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/* 157, 0x9d */ SDLK_UNKNOWN,
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/* 158, 0x9e */ SDLK_UNKNOWN,
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/* 159, 0x9f */ SDLK_UNKNOWN,
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/* 160, 0xa0 */ SDLK_GRAVE,
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/* 161, 0xa1 */ SDLK_UNKNOWN,
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/* 162, 0xa2 */ SDLK_UNKNOWN,
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/* 163, 0xa3 */ SDLK_KP_HASH, /*KaiOS phone keypad*/
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/* 164, 0xa4 */ SDLK_UNKNOWN,
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/* 165, 0xa5 */ SDLK_UNKNOWN,
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/* 166, 0xa6 */ SDLK_UNKNOWN,
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/* 167, 0xa7 */ SDLK_UNKNOWN,
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/* 168, 0xa8 */ SDLK_UNKNOWN,
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/* 169, 0xa9 */ SDLK_UNKNOWN,
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/* 170, 0xaa */ SDLK_KP_MULTIPLY, /*KaiOS phone keypad*/
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/* 171, 0xab */ SDLK_RIGHTBRACKET,
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/* 172, 0xac */ SDLK_UNKNOWN,
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/* 173, 0xad */ SDLK_MINUS, /*FX*/
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/* 174, 0xae */ SDLK_VOLUMEDOWN, /*IE, Chrome*/
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/* 175, 0xaf */ SDLK_VOLUMEUP, /*IE, Chrome*/
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/* 176, 0xb0 */ SDLK_MEDIA_NEXT_TRACK, /*IE, Chrome*/
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/* 177, 0xb1 */ SDLK_MEDIA_PREVIOUS_TRACK, /*IE, Chrome*/
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/* 178, 0xb2 */ SDLK_UNKNOWN,
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/* 179, 0xb3 */ SDLK_MEDIA_PLAY, /*IE, Chrome*/
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/* 180, 0xb4 */ SDLK_UNKNOWN,
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/* 181, 0xb5 */ SDLK_UNKNOWN,
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/* 182, 0xb6 */ SDLK_VOLUMEDOWN, /*FX*/
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/* 183, 0xb7 */ SDLK_VOLUMEUP, /*FX*/
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/* 184, 0xb8 */ SDLK_UNKNOWN,
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/* 185, 0xb9 */ SDLK_UNKNOWN,
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/* 186, 0xba */ SDLK_SEMICOLON, /*IE, Chrome, D3E legacy*/
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/* 187, 0xbb */ SDLK_EQUALS, /*IE, Chrome, D3E legacy*/
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/* 188, 0xbc */ SDLK_COMMA,
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/* 189, 0xbd */ SDLK_MINUS, /*IE, Chrome, D3E legacy*/
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/* 190, 0xbe */ SDLK_PERIOD,
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/* 191, 0xbf */ SDLK_SLASH,
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/* 192, 0xc0 */ SDLK_GRAVE, /*FX, D3E legacy (SDLK_APOSTROPHE in IE/Chrome)*/
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/* 193, 0xc1 */ SDLK_UNKNOWN,
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/* 194, 0xc2 */ SDLK_UNKNOWN,
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/* 195, 0xc3 */ SDLK_UNKNOWN,
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/* 196, 0xc4 */ SDLK_UNKNOWN,
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/* 197, 0xc5 */ SDLK_UNKNOWN,
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/* 198, 0xc6 */ SDLK_UNKNOWN,
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/* 199, 0xc7 */ SDLK_UNKNOWN,
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/* 200, 0xc8 */ SDLK_UNKNOWN,
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/* 201, 0xc9 */ SDLK_UNKNOWN,
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/* 202, 0xca */ SDLK_UNKNOWN,
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/* 203, 0xcb */ SDLK_UNKNOWN,
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/* 204, 0xcc */ SDLK_UNKNOWN,
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/* 205, 0xcd */ SDLK_UNKNOWN,
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/* 206, 0xce */ SDLK_UNKNOWN,
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/* 207, 0xcf */ SDLK_UNKNOWN,
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/* 208, 0xd0 */ SDLK_UNKNOWN,
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/* 209, 0xd1 */ SDLK_UNKNOWN,
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/* 210, 0xd2 */ SDLK_UNKNOWN,
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/* 211, 0xd3 */ SDLK_UNKNOWN,
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/* 212, 0xd4 */ SDLK_UNKNOWN,
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/* 213, 0xd5 */ SDLK_UNKNOWN,
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/* 214, 0xd6 */ SDLK_UNKNOWN,
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/* 215, 0xd7 */ SDLK_UNKNOWN,
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/* 216, 0xd8 */ SDLK_UNKNOWN,
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/* 217, 0xd9 */ SDLK_UNKNOWN,
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/* 218, 0xda */ SDLK_UNKNOWN,
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/* 219, 0xdb */ SDLK_LEFTBRACKET,
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/* 220, 0xdc */ SDLK_BACKSLASH,
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/* 221, 0xdd */ SDLK_RIGHTBRACKET,
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/* 222, 0xde */ SDLK_APOSTROPHE, /*FX, D3E legacy*/
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};
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/*
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Emscripten PK code to scancode
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https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent
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@@ -490,63 +259,6 @@ static SDL_Scancode Emscripten_MapScanCode(const char *code)
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return SDL_SCANCODE_UNKNOWN;
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}
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static SDL_Keycode Emscripten_MapKeyCode(const EmscriptenKeyboardEvent *keyEvent)
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{
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SDL_Keycode keycode = SDLK_UNKNOWN;
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if (keyEvent->keyCode < SDL_arraysize(emscripten_keycode_table)) {
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keycode = emscripten_keycode_table[keyEvent->keyCode];
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if (keycode != SDLK_UNKNOWN) {
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if (keyEvent->location == DOM_KEY_LOCATION_RIGHT) {
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switch (keycode) {
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case SDLK_LSHIFT:
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keycode = SDLK_RSHIFT;
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break;
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case SDLK_LCTRL:
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keycode = SDLK_RCTRL;
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break;
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case SDLK_LALT:
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keycode = SDLK_RALT;
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break;
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case SDLK_LGUI:
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keycode = SDLK_RGUI;
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break;
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default:
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break;
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}
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}
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}
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}
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return keycode;
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}
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/* "borrowed" from SDL_windowsevents.c */
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static int Emscripten_ConvertUTF32toUTF8(Uint32 codepoint, char *text)
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{
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if (codepoint <= 0x7F) {
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text[0] = (char)codepoint;
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text[1] = '\0';
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} else if (codepoint <= 0x7FF) {
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text[0] = 0xC0 | (char)((codepoint >> 6) & 0x1F);
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text[1] = 0x80 | (char)(codepoint & 0x3F);
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text[2] = '\0';
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} else if (codepoint <= 0xFFFF) {
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text[0] = 0xE0 | (char)((codepoint >> 12) & 0x0F);
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text[1] = 0x80 | (char)((codepoint >> 6) & 0x3F);
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text[2] = 0x80 | (char)(codepoint & 0x3F);
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text[3] = '\0';
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} else if (codepoint <= 0x10FFFF) {
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text[0] = 0xF0 | (char)((codepoint >> 18) & 0x0F);
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text[1] = 0x80 | (char)((codepoint >> 12) & 0x3F);
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text[2] = 0x80 | (char)((codepoint >> 6) & 0x3F);
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text[3] = 0x80 | (char)(codepoint & 0x3F);
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text[4] = '\0';
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} else {
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return SDL_FALSE;
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}
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return SDL_TRUE;
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}
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static EM_BOOL Emscripten_HandlePointerLockChange(int eventType, const EmscriptenPointerlockChangeEvent *changeEvent, void *userData)
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{
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SDL_WindowData *window_data = (SDL_WindowData *)userData;
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@@ -738,11 +450,14 @@ static EM_BOOL Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent
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return preventDefault;
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}
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/* This is a great tool to see web keyboard events live:
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* https://w3c.github.io/uievents/tools/key-event-viewer.html
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*/
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static EM_BOOL Emscripten_HandleKey(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
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{
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SDL_WindowData *window_data = (SDL_WindowData *)userData;
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const SDL_Keycode keycode = Emscripten_MapKeyCode(keyEvent);
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SDL_Scancode scancode = Emscripten_MapScanCode(keyEvent->code);
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SDL_Keycode keycode = SDLK_UNKNOWN;
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SDL_bool prevent_default = SDL_TRUE;
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SDL_bool is_nav_key = SDL_FALSE;
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@@ -787,7 +502,19 @@ static EM_BOOL Emscripten_HandleKey(int eventType, const EmscriptenKeyboardEvent
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}
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}
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SDL_SendKeyboardKeyAndKeycode(0, SDL_DEFAULT_KEYBOARD_ID, 0, scancode, keycode, eventType == EMSCRIPTEN_EVENT_KEYDOWN ? SDL_PRESSED : SDL_RELEASED);
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if (SDL_utf8strlen(keyEvent->key) == 1) {
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const char *key = keyEvent->key;
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keycode = SDL_StepUTF8(&key, NULL);
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if (keycode == SDL_INVALID_UNICODE_CODEPOINT) {
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keycode = SDLK_UNKNOWN;
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}
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}
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if (keycode != SDLK_UNKNOWN) {
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SDL_SendKeyboardKeyAndKeycode(0, SDL_DEFAULT_KEYBOARD_ID, 0, scancode, keycode, eventType == EMSCRIPTEN_EVENT_KEYDOWN ? SDL_PRESSED : SDL_RELEASED);
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} else {
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SDL_SendKeyboardKey(0, SDL_DEFAULT_KEYBOARD_ID, 0, scancode, eventType == EMSCRIPTEN_EVENT_KEYDOWN ? SDL_PRESSED : SDL_RELEASED);
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}
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/* if TEXTINPUT events are enabled we can't prevent keydown or we won't get keypress
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* we need to ALWAYS prevent backspace and tab otherwise chrome takes action and does bad navigation UX
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@@ -816,7 +543,7 @@ static EM_BOOL Emscripten_HandleKeyPress(int eventType, const EmscriptenKeyboard
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if (SDL_TextInputActive(window_data->window)) {
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char text[5];
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if (Emscripten_ConvertUTF32toUTF8(keyEvent->charCode, text)) {
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if (SDL_UCS4ToUTF8(keyEvent->charCode, text)) {
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SDL_SendKeyboardText(text);
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}
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return EM_TRUE;
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