src/video/emscripten/SDL_emscriptenevents.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 26 May 2015 06:27:46 -0700
changeset 9619 b94b6d0bff0f
parent 9601 4c65108b7ac3
child 9679 7fc4a8be47a8
permissions -rw-r--r--
Updated the copyright year to 2015
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_EMSCRIPTEN
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#include <emscripten/html5.h>
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#include "../../events/SDL_events_c.h"
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#include "../../events/SDL_keyboard_c.h"
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#include "../../events/SDL_touch_c.h"
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#include "SDL_emscriptenevents.h"
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#include "SDL_emscriptenvideo.h"
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#include "SDL_hints.h"
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#define FULLSCREEN_MASK ( SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN )
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/*
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.keyCode to scancode
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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_Scancode emscripten_scancode_table[] = {
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    /*  0 */    SDL_SCANCODE_UNKNOWN,
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    /*  1 */    SDL_SCANCODE_UNKNOWN,
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    /*  2 */    SDL_SCANCODE_UNKNOWN,
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    /*  3 */    SDL_SCANCODE_CANCEL,
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    /*  4 */    SDL_SCANCODE_UNKNOWN,
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    /*  5 */    SDL_SCANCODE_UNKNOWN,
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    /*  6 */    SDL_SCANCODE_HELP,
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    /*  7 */    SDL_SCANCODE_UNKNOWN,
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    /*  8 */    SDL_SCANCODE_BACKSPACE,
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    /*  9 */    SDL_SCANCODE_TAB,
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    /*  10 */   SDL_SCANCODE_UNKNOWN,
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    /*  11 */   SDL_SCANCODE_UNKNOWN,
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    /*  12 */   SDL_SCANCODE_UNKNOWN,
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    /*  13 */   SDL_SCANCODE_RETURN,
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    /*  14 */   SDL_SCANCODE_UNKNOWN,
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    /*  15 */   SDL_SCANCODE_UNKNOWN,
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    /*  16 */   SDL_SCANCODE_LSHIFT,
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    /*  17 */   SDL_SCANCODE_LCTRL,
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    /*  18 */   SDL_SCANCODE_LALT,
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    /*  19 */   SDL_SCANCODE_PAUSE,
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    /*  20 */   SDL_SCANCODE_CAPSLOCK,
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    /*  21 */   SDL_SCANCODE_UNKNOWN,
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    /*  22 */   SDL_SCANCODE_UNKNOWN,
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    /*  23 */   SDL_SCANCODE_UNKNOWN,
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    /*  24 */   SDL_SCANCODE_UNKNOWN,
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    /*  25 */   SDL_SCANCODE_UNKNOWN,
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    /*  26 */   SDL_SCANCODE_UNKNOWN,
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    /*  27 */   SDL_SCANCODE_ESCAPE,
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    /*  28 */   SDL_SCANCODE_UNKNOWN,
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    /*  29 */   SDL_SCANCODE_UNKNOWN,
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    /*  30 */   SDL_SCANCODE_UNKNOWN,
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    /*  31 */   SDL_SCANCODE_UNKNOWN,
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    /*  32 */   SDL_SCANCODE_SPACE,
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    /*  33 */   SDL_SCANCODE_PAGEUP,
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    /*  34 */   SDL_SCANCODE_PAGEDOWN,
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    /*  35 */   SDL_SCANCODE_END,
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    /*  36 */   SDL_SCANCODE_HOME,
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    /*  37 */   SDL_SCANCODE_LEFT,
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    /*  38 */   SDL_SCANCODE_UP,
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    /*  39 */   SDL_SCANCODE_RIGHT,
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    /*  40 */   SDL_SCANCODE_DOWN,
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    /*  41 */   SDL_SCANCODE_UNKNOWN,
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    /*  42 */   SDL_SCANCODE_UNKNOWN,
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    /*  43 */   SDL_SCANCODE_UNKNOWN,
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    /*  44 */   SDL_SCANCODE_UNKNOWN,
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    /*  45 */   SDL_SCANCODE_INSERT,
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    /*  46 */   SDL_SCANCODE_DELETE,
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    /*  47 */   SDL_SCANCODE_UNKNOWN,
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    /*  48 */   SDL_SCANCODE_0,
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    /*  49 */   SDL_SCANCODE_1,
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    /*  50 */   SDL_SCANCODE_2,
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    /*  51 */   SDL_SCANCODE_3,
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    /*  52 */   SDL_SCANCODE_4,
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    /*  53 */   SDL_SCANCODE_5,
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    /*  54 */   SDL_SCANCODE_6,
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    /*  55 */   SDL_SCANCODE_7,
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    /*  56 */   SDL_SCANCODE_8,
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    /*  57 */   SDL_SCANCODE_9,
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    /*  58 */   SDL_SCANCODE_UNKNOWN,
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    /*  59 */   SDL_SCANCODE_SEMICOLON,
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    /*  60 */   SDL_SCANCODE_UNKNOWN,
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    /*  61 */   SDL_SCANCODE_EQUALS,
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    /*  62 */   SDL_SCANCODE_UNKNOWN,
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    /*  63 */   SDL_SCANCODE_UNKNOWN,
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    /*  64 */   SDL_SCANCODE_UNKNOWN,
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    /*  65 */   SDL_SCANCODE_A,
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    /*  66 */   SDL_SCANCODE_B,
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    /*  67 */   SDL_SCANCODE_C,
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    /*  68 */   SDL_SCANCODE_D,
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    /*  69 */   SDL_SCANCODE_E,
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    /*  70 */   SDL_SCANCODE_F,
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    /*  71 */   SDL_SCANCODE_G,
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    /*  72 */   SDL_SCANCODE_H,
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    /*  73 */   SDL_SCANCODE_I,
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    /*  74 */   SDL_SCANCODE_J,
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    /*  75 */   SDL_SCANCODE_K,
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    /*  76 */   SDL_SCANCODE_L,
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    /*  77 */   SDL_SCANCODE_M,
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    /*  78 */   SDL_SCANCODE_N,
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    /*  79 */   SDL_SCANCODE_O,
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    /*  80 */   SDL_SCANCODE_P,
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    /*  81 */   SDL_SCANCODE_Q,
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    /*  82 */   SDL_SCANCODE_R,
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    /*  83 */   SDL_SCANCODE_S,
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    /*  84 */   SDL_SCANCODE_T,
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    /*  85 */   SDL_SCANCODE_U,
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    /*  86 */   SDL_SCANCODE_V,
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    /*  87 */   SDL_SCANCODE_W,
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    /*  88 */   SDL_SCANCODE_X,
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    /*  89 */   SDL_SCANCODE_Y,
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    /*  90 */   SDL_SCANCODE_Z,
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    /*  91 */   SDL_SCANCODE_LGUI,
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    /*  92 */   SDL_SCANCODE_UNKNOWN,
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    /*  93 */   SDL_SCANCODE_APPLICATION,
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    /*  94 */   SDL_SCANCODE_UNKNOWN,
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    /*  95 */   SDL_SCANCODE_UNKNOWN,
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    /*  96 */   SDL_SCANCODE_KP_0,
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    /*  97 */   SDL_SCANCODE_KP_1,
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    /*  98 */   SDL_SCANCODE_KP_2,
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    /*  99 */   SDL_SCANCODE_KP_3,
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    /* 100 */   SDL_SCANCODE_KP_4,
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    /* 101 */   SDL_SCANCODE_KP_5,
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    /* 102 */   SDL_SCANCODE_KP_6,
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    /* 103 */   SDL_SCANCODE_KP_7,
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    /* 104 */   SDL_SCANCODE_KP_8,
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    /* 105 */   SDL_SCANCODE_KP_9,
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    /* 106 */   SDL_SCANCODE_KP_MULTIPLY,
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    /* 107 */   SDL_SCANCODE_KP_PLUS,
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    /* 108 */   SDL_SCANCODE_UNKNOWN,
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    /* 109 */   SDL_SCANCODE_KP_MINUS,
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    /* 110 */   SDL_SCANCODE_KP_PERIOD,
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    /* 111 */   SDL_SCANCODE_KP_DIVIDE,
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    /* 112 */   SDL_SCANCODE_F1,
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    /* 113 */   SDL_SCANCODE_F2,
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    /* 114 */   SDL_SCANCODE_F3,
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    /* 115 */   SDL_SCANCODE_F4,
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    /* 116 */   SDL_SCANCODE_F5,
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    /* 117 */   SDL_SCANCODE_F6,
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    /* 118 */   SDL_SCANCODE_F7,
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    /* 119 */   SDL_SCANCODE_F8,
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    /* 120 */   SDL_SCANCODE_F9,
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    /* 121 */   SDL_SCANCODE_F10,
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    /* 122 */   SDL_SCANCODE_F11,
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    /* 123 */   SDL_SCANCODE_F12,
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    /* 124 */   SDL_SCANCODE_F13,
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    /* 125 */   SDL_SCANCODE_F14,
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    /* 126 */   SDL_SCANCODE_F15,
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    /* 127 */   SDL_SCANCODE_F16,
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    /* 128 */   SDL_SCANCODE_F17,
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    /* 129 */   SDL_SCANCODE_F18,
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    /* 130 */   SDL_SCANCODE_F19,
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    /* 131 */   SDL_SCANCODE_F20,
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    /* 132 */   SDL_SCANCODE_F21,
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    /* 133 */   SDL_SCANCODE_F22,
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    /* 134 */   SDL_SCANCODE_F23,
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    /* 135 */   SDL_SCANCODE_F24,
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    /* 136 */   SDL_SCANCODE_UNKNOWN,
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    /* 137 */   SDL_SCANCODE_UNKNOWN,
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    /* 138 */   SDL_SCANCODE_UNKNOWN,
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    /* 139 */   SDL_SCANCODE_UNKNOWN,
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    /* 140 */   SDL_SCANCODE_UNKNOWN,
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    /* 141 */   SDL_SCANCODE_UNKNOWN,
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    /* 142 */   SDL_SCANCODE_UNKNOWN,
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    /* 143 */   SDL_SCANCODE_UNKNOWN,
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    /* 144 */   SDL_SCANCODE_NUMLOCKCLEAR,
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    /* 145 */   SDL_SCANCODE_SCROLLLOCK,
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    /* 146 */   SDL_SCANCODE_UNKNOWN,
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    /* 147 */   SDL_SCANCODE_UNKNOWN,
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    /* 148 */   SDL_SCANCODE_UNKNOWN,
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    /* 149 */   SDL_SCANCODE_UNKNOWN,
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    /* 150 */   SDL_SCANCODE_UNKNOWN,
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    /* 151 */   SDL_SCANCODE_UNKNOWN,
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    /* 152 */   SDL_SCANCODE_UNKNOWN,
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    /* 153 */   SDL_SCANCODE_UNKNOWN,
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    /* 154 */   SDL_SCANCODE_UNKNOWN,
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    /* 155 */   SDL_SCANCODE_UNKNOWN,
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    /* 156 */   SDL_SCANCODE_UNKNOWN,
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    /* 157 */   SDL_SCANCODE_UNKNOWN,
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    /* 158 */   SDL_SCANCODE_UNKNOWN,
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    /* 159 */   SDL_SCANCODE_UNKNOWN,
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    /* 160 */   SDL_SCANCODE_UNKNOWN,
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    /* 161 */   SDL_SCANCODE_UNKNOWN,
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    /* 162 */   SDL_SCANCODE_UNKNOWN,
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    /* 163 */   SDL_SCANCODE_UNKNOWN,
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    /* 164 */   SDL_SCANCODE_UNKNOWN,
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    /* 165 */   SDL_SCANCODE_UNKNOWN,
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    /* 166 */   SDL_SCANCODE_UNKNOWN,
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    /* 167 */   SDL_SCANCODE_UNKNOWN,
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    /* 168 */   SDL_SCANCODE_UNKNOWN,
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    /* 169 */   SDL_SCANCODE_UNKNOWN,
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    /* 170 */   SDL_SCANCODE_UNKNOWN,
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    /* 171 */   SDL_SCANCODE_UNKNOWN,
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    /* 172 */   SDL_SCANCODE_UNKNOWN,
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    /* 173 */   SDL_SCANCODE_MINUS, /*FX*/
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    /* 174 */   SDL_SCANCODE_UNKNOWN,
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    /* 175 */   SDL_SCANCODE_UNKNOWN,
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    /* 176 */   SDL_SCANCODE_UNKNOWN,
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    /* 177 */   SDL_SCANCODE_UNKNOWN,
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    /* 178 */   SDL_SCANCODE_UNKNOWN,
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    /* 179 */   SDL_SCANCODE_UNKNOWN,
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    /* 180 */   SDL_SCANCODE_UNKNOWN,
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    /* 181 */   SDL_SCANCODE_UNKNOWN,
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    /* 182 */   SDL_SCANCODE_UNKNOWN,
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    /* 183 */   SDL_SCANCODE_UNKNOWN,
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    /* 184 */   SDL_SCANCODE_UNKNOWN,
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    /* 185 */   SDL_SCANCODE_UNKNOWN,
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    /* 186 */   SDL_SCANCODE_SEMICOLON, /*IE, Chrome, D3E legacy*/
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    /* 187 */   SDL_SCANCODE_EQUALS, /*IE, Chrome, D3E legacy*/
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    /* 188 */   SDL_SCANCODE_COMMA,
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    /* 189 */   SDL_SCANCODE_MINUS, /*IE, Chrome, D3E legacy*/
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    /* 190 */   SDL_SCANCODE_PERIOD,
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    /* 191 */   SDL_SCANCODE_SLASH,
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    /* 192 */   SDL_SCANCODE_GRAVE, /*FX, D3E legacy (SDL_SCANCODE_APOSTROPHE in IE/Chrome)*/
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    /* 193 */   SDL_SCANCODE_UNKNOWN,
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    /* 194 */   SDL_SCANCODE_UNKNOWN,
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    /* 195 */   SDL_SCANCODE_UNKNOWN,
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    /* 196 */   SDL_SCANCODE_UNKNOWN,
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    /* 197 */   SDL_SCANCODE_UNKNOWN,
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    /* 198 */   SDL_SCANCODE_UNKNOWN,
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    /* 199 */   SDL_SCANCODE_UNKNOWN,
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    /* 200 */   SDL_SCANCODE_UNKNOWN,
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    /* 201 */   SDL_SCANCODE_UNKNOWN,
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    /* 202 */   SDL_SCANCODE_UNKNOWN,
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    /* 203 */   SDL_SCANCODE_UNKNOWN,
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    /* 204 */   SDL_SCANCODE_UNKNOWN,
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    /* 205 */   SDL_SCANCODE_UNKNOWN,
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    /* 206 */   SDL_SCANCODE_UNKNOWN,
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    /* 207 */   SDL_SCANCODE_UNKNOWN,
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    /* 208 */   SDL_SCANCODE_UNKNOWN,
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    /* 209 */   SDL_SCANCODE_UNKNOWN,
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    /* 210 */   SDL_SCANCODE_UNKNOWN,
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    /* 211 */   SDL_SCANCODE_UNKNOWN,
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    /* 212 */   SDL_SCANCODE_UNKNOWN,
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    /* 213 */   SDL_SCANCODE_UNKNOWN,
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    /* 214 */   SDL_SCANCODE_UNKNOWN,
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    /* 215 */   SDL_SCANCODE_UNKNOWN,
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    /* 216 */   SDL_SCANCODE_UNKNOWN,
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    /* 217 */   SDL_SCANCODE_UNKNOWN,
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    /* 218 */   SDL_SCANCODE_UNKNOWN,
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    /* 219 */   SDL_SCANCODE_LEFTBRACKET,
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    /* 220 */   SDL_SCANCODE_BACKSLASH,
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    /* 221 */   SDL_SCANCODE_RIGHTBRACKET,
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    /* 222 */   SDL_SCANCODE_APOSTROPHE, /*FX, D3E legacy*/
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};
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/* "borrowed" from SDL_windowsevents.c */
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int
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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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EM_BOOL
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Emscripten_HandleMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
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{
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    SDL_WindowData *window_data = userData;
icculus@9278
   304
    int mx = mouseEvent->canvasX, my = mouseEvent->canvasY;
icculus@9278
   305
    EmscriptenPointerlockChangeEvent pointerlock_status;
icculus@9278
   306
icculus@9278
   307
    /* check for pointer lock */
icculus@9278
   308
    emscripten_get_pointerlock_status(&pointerlock_status);
icculus@9278
   309
icculus@9278
   310
    if (pointerlock_status.isActive) {
icculus@9278
   311
        mx = mouseEvent->movementX;
icculus@9278
   312
        my = mouseEvent->movementY;
icculus@9278
   313
    }
icculus@9278
   314
icculus@9278
   315
    /* rescale (in case canvas is being scaled)*/
icculus@9278
   316
    double client_w, client_h;
icculus@9278
   317
    emscripten_get_element_css_size(NULL, &client_w, &client_h);
icculus@9278
   318
icculus@9278
   319
    mx = mx * (window_data->window->w / (client_w * window_data->pixel_ratio));
icculus@9278
   320
    my = my * (window_data->window->h / (client_h * window_data->pixel_ratio));
icculus@9278
   321
icculus@9278
   322
    SDL_SendMouseMotion(window_data->window, 0, pointerlock_status.isActive, mx, my);
icculus@9278
   323
    return 0;
icculus@9278
   324
}
icculus@9278
   325
philipp@9352
   326
EM_BOOL
icculus@9278
   327
Emscripten_HandleMouseButton(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
icculus@9278
   328
{
icculus@9278
   329
    SDL_WindowData *window_data = userData;
icculus@9278
   330
    uint32_t sdl_button;
icculus@9278
   331
    switch (mouseEvent->button) {
icculus@9278
   332
        case 0:
icculus@9278
   333
            sdl_button = SDL_BUTTON_LEFT;
icculus@9278
   334
            break;
icculus@9278
   335
        case 1:
icculus@9278
   336
            sdl_button = SDL_BUTTON_MIDDLE;
icculus@9278
   337
            break;
icculus@9278
   338
        case 2:
icculus@9278
   339
            sdl_button = SDL_BUTTON_RIGHT;
icculus@9278
   340
            break;
icculus@9278
   341
        default:
icculus@9278
   342
            return 0;
icculus@9278
   343
    }
icculus@9278
   344
    SDL_SendMouseButton(window_data->window, 0, eventType == EMSCRIPTEN_EVENT_MOUSEDOWN ? SDL_PRESSED : SDL_RELEASED, sdl_button);
icculus@9278
   345
    return 1;
icculus@9278
   346
}
icculus@9278
   347
philipp@9352
   348
EM_BOOL
icculus@9278
   349
Emscripten_HandleMouseFocus(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
icculus@9278
   350
{
icculus@9278
   351
    SDL_WindowData *window_data = userData;
icculus@9278
   352
    SDL_SendWindowEvent(window_data->window, eventType == EMSCRIPTEN_EVENT_MOUSEENTER ? SDL_WINDOWEVENT_ENTER : SDL_WINDOWEVENT_LEAVE, 0, 0);
icculus@9278
   353
    return 1;
icculus@9278
   354
}
icculus@9278
   355
philipp@9352
   356
EM_BOOL
icculus@9278
   357
Emscripten_HandleWheel(int eventType, const EmscriptenWheelEvent *wheelEvent, void *userData)
icculus@9278
   358
{
icculus@9278
   359
    SDL_WindowData *window_data = userData;
icculus@9278
   360
    SDL_SendMouseWheel(window_data->window, 0, wheelEvent->deltaX, -wheelEvent->deltaY, SDL_MOUSEWHEEL_NORMAL);
icculus@9278
   361
    return 1;
icculus@9278
   362
}
icculus@9278
   363
philipp@9352
   364
EM_BOOL
icculus@9278
   365
Emscripten_HandleFocus(int eventType, const EmscriptenFocusEvent *wheelEvent, void *userData)
icculus@9278
   366
{
icculus@9278
   367
    SDL_WindowData *window_data = userData;
icculus@9278
   368
    SDL_SendWindowEvent(window_data->window, eventType == EMSCRIPTEN_EVENT_FOCUS ? SDL_WINDOWEVENT_FOCUS_GAINED : SDL_WINDOWEVENT_FOCUS_LOST, 0, 0);
icculus@9278
   369
    return 1;
icculus@9278
   370
}
icculus@9278
   371
philipp@9352
   372
EM_BOOL
icculus@9278
   373
Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData)
icculus@9278
   374
{
philipp@9591
   375
    SDL_WindowData *window_data = userData;
icculus@9278
   376
    int i;
icculus@9278
   377
icculus@9278
   378
    SDL_TouchID deviceId = 0;
icculus@9278
   379
    if (!SDL_GetTouch(deviceId)) {
icculus@9278
   380
        if (SDL_AddTouch(deviceId, "") < 0) {
icculus@9278
   381
             return 0;
icculus@9278
   382
        }
icculus@9278
   383
    }
icculus@9278
   384
icculus@9278
   385
    for (i = 0; i < touchEvent->numTouches; i++) {
philipp@9591
   386
        SDL_FingerID id;
philipp@9591
   387
        float x, y;
icculus@9278
   388
icculus@9278
   389
        if (!touchEvent->touches[i].isChanged)
icculus@9278
   390
            continue;
icculus@9278
   391
icculus@9278
   392
        id = touchEvent->touches[i].identifier;
philipp@9591
   393
        x = touchEvent->touches[i].canvasX / (float)window_data->windowed_width;
philipp@9591
   394
        y = touchEvent->touches[i].canvasY / (float)window_data->windowed_height;
icculus@9278
   395
icculus@9278
   396
        if (eventType == EMSCRIPTEN_EVENT_TOUCHMOVE) {
icculus@9278
   397
            SDL_SendTouchMotion(deviceId, id, x, y, 1.0f);
icculus@9278
   398
        } else if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) {
icculus@9278
   399
            SDL_SendTouch(deviceId, id, SDL_TRUE, x, y, 1.0f);
icculus@9278
   400
        } else {
icculus@9278
   401
            SDL_SendTouch(deviceId, id, SDL_FALSE, x, y, 1.0f);
icculus@9278
   402
        }
icculus@9278
   403
    }
icculus@9278
   404
icculus@9278
   405
icculus@9278
   406
    return 1;
icculus@9278
   407
}
icculus@9278
   408
philipp@9352
   409
EM_BOOL
icculus@9278
   410
Emscripten_HandleKey(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
icculus@9278
   411
{
icculus@9278
   412
    Uint32 scancode;
icculus@9278
   413
icculus@9278
   414
    /* .keyCode is deprecated, but still the most reliable way to get keys */
icculus@9278
   415
    if (keyEvent->keyCode < SDL_arraysize(emscripten_scancode_table)) {
icculus@9278
   416
        scancode = emscripten_scancode_table[keyEvent->keyCode];
icculus@9278
   417
icculus@9278
   418
        if (scancode != SDL_SCANCODE_UNKNOWN) {
icculus@9278
   419
icculus@9278
   420
            if (keyEvent->location == DOM_KEY_LOCATION_RIGHT) {
icculus@9278
   421
                switch (scancode) {
icculus@9278
   422
                    case SDL_SCANCODE_LSHIFT:
icculus@9278
   423
                        scancode = SDL_SCANCODE_RSHIFT;
icculus@9278
   424
                        break;
icculus@9278
   425
                    case SDL_SCANCODE_LCTRL:
icculus@9278
   426
                        scancode = SDL_SCANCODE_RCTRL;
icculus@9278
   427
                        break;
icculus@9278
   428
                    case SDL_SCANCODE_LALT:
icculus@9278
   429
                        scancode = SDL_SCANCODE_RALT;
icculus@9278
   430
                        break;
icculus@9278
   431
                    case SDL_SCANCODE_LGUI:
icculus@9278
   432
                        scancode = SDL_SCANCODE_RGUI;
icculus@9278
   433
                        break;
icculus@9278
   434
                }
icculus@9278
   435
            }
icculus@9278
   436
            SDL_SendKeyboardKey(eventType == EMSCRIPTEN_EVENT_KEYDOWN ?
icculus@9278
   437
                                SDL_PRESSED : SDL_RELEASED, scancode);
icculus@9278
   438
        }
icculus@9278
   439
    }
icculus@9278
   440
icculus@9278
   441
    /* if we prevent keydown, we won't get keypress
icculus@9278
   442
     * also we need to ALWAYS prevent backspace and tab otherwise chrome takes action and does bad navigation UX
icculus@9278
   443
     */
icculus@9278
   444
    return SDL_GetEventState(SDL_TEXTINPUT) != SDL_ENABLE || eventType != EMSCRIPTEN_EVENT_KEYDOWN
icculus@9278
   445
            || keyEvent->keyCode == 8 /* backspace */ || keyEvent->keyCode == 9 /* tab */;
icculus@9278
   446
}
icculus@9278
   447
philipp@9352
   448
EM_BOOL
icculus@9278
   449
Emscripten_HandleKeyPress(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
icculus@9278
   450
{
icculus@9278
   451
    char text[5];
philipp@9378
   452
    if (Emscripten_ConvertUTF32toUTF8(keyEvent->charCode, text)) {
philipp@9378
   453
        SDL_SendKeyboardText(text);
philipp@9378
   454
    }
icculus@9278
   455
    return 1;
icculus@9278
   456
}
icculus@9278
   457
philipp@9352
   458
EM_BOOL
icculus@9278
   459
Emscripten_HandleFullscreenChange(int eventType, const EmscriptenFullscreenChangeEvent *fullscreenChangeEvent, void *userData)
icculus@9278
   460
{
icculus@9278
   461
    /*make sure this is actually our element going fullscreen*/
icculus@9278
   462
    if(SDL_strcmp(fullscreenChangeEvent->id, "SDLFullscreenElement") != 0)
icculus@9278
   463
        return 0;
icculus@9278
   464
icculus@9278
   465
    SDL_WindowData *window_data = userData;
icculus@9278
   466
    if(fullscreenChangeEvent->isFullscreen)
icculus@9278
   467
    {
icculus@9278
   468
        SDL_bool is_desktop_fullscreen;
icculus@9278
   469
        window_data->window->flags |= window_data->requested_fullscreen_mode;
icculus@9278
   470
icculus@9278
   471
        if(!window_data->requested_fullscreen_mode)
icculus@9278
   472
            window_data->window->flags |= SDL_WINDOW_FULLSCREEN_DESKTOP; /*we didn't reqest fullscreen*/
icculus@9278
   473
icculus@9278
   474
        window_data->requested_fullscreen_mode = 0;
icculus@9278
   475
icculus@9278
   476
        is_desktop_fullscreen = (window_data->window->flags & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN_DESKTOP;
icculus@9278
   477
icculus@9278
   478
        /*update size*/
icculus@9278
   479
        if(window_data->window->flags & SDL_WINDOW_RESIZABLE || is_desktop_fullscreen)
icculus@9278
   480
        {
icculus@9278
   481
            emscripten_set_canvas_size(fullscreenChangeEvent->screenWidth, fullscreenChangeEvent->screenHeight);
icculus@9278
   482
            SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, fullscreenChangeEvent->screenWidth, fullscreenChangeEvent->screenHeight);
icculus@9278
   483
        }
icculus@9278
   484
        else
icculus@9278
   485
        {
icculus@9278
   486
            /*preserve ratio*/
icculus@9278
   487
            double w = window_data->window->w;
icculus@9278
   488
            double h = window_data->window->h;
icculus@9278
   489
            double factor = SDL_min(fullscreenChangeEvent->screenWidth / w, fullscreenChangeEvent->screenHeight / h);
icculus@9278
   490
            emscripten_set_element_css_size(NULL, w * factor, h * factor);
icculus@9278
   491
        }
icculus@9278
   492
    }
icculus@9278
   493
    else
icculus@9278
   494
    {
icculus@9278
   495
        EM_ASM({
icculus@9278
   496
            //un-reparent canvas (similar to Module.requestFullscreen)
icculus@9278
   497
            var canvas = Module['canvas'];
icculus@9278
   498
            if(canvas.parentNode.id == "SDLFullscreenElement") {
icculus@9278
   499
                var canvasContainer = canvas.parentNode;
icculus@9278
   500
                canvasContainer.parentNode.insertBefore(canvas, canvasContainer);
icculus@9278
   501
                canvasContainer.parentNode.removeChild(canvasContainer);
icculus@9278
   502
            }
icculus@9278
   503
        });
icculus@9278
   504
        double unscaled_w = window_data->windowed_width / window_data->pixel_ratio;
icculus@9278
   505
        double unscaled_h = window_data->windowed_height / window_data->pixel_ratio;
icculus@9278
   506
        emscripten_set_canvas_size(window_data->windowed_width, window_data->windowed_height);
icculus@9278
   507
icculus@9278
   508
        if (!window_data->external_size && window_data->pixel_ratio != 1.0f) {
icculus@9278
   509
            emscripten_set_element_css_size(NULL, unscaled_w, unscaled_h);
icculus@9278
   510
        }
icculus@9278
   511
icculus@9278
   512
        SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, unscaled_w, unscaled_h);
icculus@9278
   513
icculus@9278
   514
        window_data->window->flags &= ~FULLSCREEN_MASK;
icculus@9278
   515
    }
icculus@9278
   516
icculus@9278
   517
    return 0;
icculus@9278
   518
}
icculus@9278
   519
philipp@9352
   520
EM_BOOL
icculus@9278
   521
Emscripten_HandleResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
icculus@9278
   522
{
icculus@9278
   523
    SDL_WindowData *window_data = userData;
icculus@9278
   524
    if(window_data->window->flags & FULLSCREEN_MASK)
icculus@9278
   525
    {
icculus@9278
   526
        SDL_bool is_desktop_fullscreen = (window_data->window->flags & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN_DESKTOP;
icculus@9278
   527
icculus@9278
   528
        if(window_data->window->flags & SDL_WINDOW_RESIZABLE || is_desktop_fullscreen)
icculus@9278
   529
        {
icculus@9278
   530
            emscripten_set_canvas_size(uiEvent->windowInnerWidth * window_data->pixel_ratio, uiEvent->windowInnerHeight * window_data->pixel_ratio);
icculus@9278
   531
            SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, uiEvent->windowInnerWidth, uiEvent->windowInnerHeight);
icculus@9278
   532
        }
icculus@9278
   533
    }
icculus@9278
   534
    else
icculus@9278
   535
    {
icculus@9278
   536
        /* this will only work if the canvas size is set through css */
icculus@9278
   537
        if(window_data->window->flags & SDL_WINDOW_RESIZABLE)
icculus@9278
   538
        {
icculus@9278
   539
            double w = window_data->window->w;
icculus@9278
   540
            double h = window_data->window->h;
icculus@9278
   541
icculus@9278
   542
            if(window_data->external_size) {
icculus@9278
   543
                emscripten_get_element_css_size(NULL, &w, &h);
icculus@9278
   544
            }
icculus@9278
   545
icculus@9278
   546
            emscripten_set_canvas_size(w * window_data->pixel_ratio, h * window_data->pixel_ratio);
icculus@9278
   547
icculus@9278
   548
            /* set_canvas_size unsets this */
icculus@9278
   549
            if (!window_data->external_size && window_data->pixel_ratio != 1.0f) {
icculus@9278
   550
                emscripten_set_element_css_size(NULL, w, h);
icculus@9278
   551
            }
icculus@9278
   552
icculus@9278
   553
            SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, w, h);
icculus@9278
   554
        }
icculus@9278
   555
    }
icculus@9278
   556
icculus@9278
   557
    return 0;
icculus@9278
   558
}
icculus@9278
   559
philipp@9352
   560
EM_BOOL
icculus@9278
   561
Emscripten_HandleVisibilityChange(int eventType, const EmscriptenVisibilityChangeEvent *visEvent, void *userData)
icculus@9278
   562
{
icculus@9278
   563
    SDL_WindowData *window_data = userData;
icculus@9278
   564
    SDL_SendWindowEvent(window_data->window, visEvent->hidden ? SDL_WINDOWEVENT_HIDDEN : SDL_WINDOWEVENT_SHOWN, 0, 0);
icculus@9278
   565
    return 0;
icculus@9278
   566
}
icculus@9278
   567
icculus@9278
   568
void
icculus@9278
   569
Emscripten_RegisterEventHandlers(SDL_WindowData *data)
icculus@9278
   570
{
icculus@9278
   571
    /* There is only one window and that window is the canvas */
icculus@9278
   572
    emscripten_set_mousemove_callback("#canvas", data, 0, Emscripten_HandleMouseMove);
icculus@9278
   573
icculus@9278
   574
    emscripten_set_mousedown_callback("#canvas", data, 0, Emscripten_HandleMouseButton);
icculus@9278
   575
    emscripten_set_mouseup_callback("#canvas", data, 0, Emscripten_HandleMouseButton);
icculus@9278
   576
icculus@9278
   577
    emscripten_set_mouseenter_callback("#canvas", data, 0, Emscripten_HandleMouseFocus);
icculus@9278
   578
    emscripten_set_mouseleave_callback("#canvas", data, 0, Emscripten_HandleMouseFocus);
icculus@9278
   579
icculus@9278
   580
    emscripten_set_wheel_callback("#canvas", data, 0, Emscripten_HandleWheel);
icculus@9278
   581
icculus@9278
   582
    emscripten_set_focus_callback("#canvas", data, 0, Emscripten_HandleFocus);
icculus@9278
   583
    emscripten_set_blur_callback("#canvas", data, 0, Emscripten_HandleFocus);
icculus@9278
   584
icculus@9278
   585
    emscripten_set_touchstart_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   586
    emscripten_set_touchend_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   587
    emscripten_set_touchmove_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   588
    emscripten_set_touchcancel_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   589
icculus@9278
   590
    /* Keyboard events are awkward */
icculus@9278
   591
    const char *keyElement = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT);
icculus@9278
   592
    if (!keyElement) keyElement = "#window";
icculus@9278
   593
icculus@9278
   594
    emscripten_set_keydown_callback(keyElement, data, 0, Emscripten_HandleKey);
icculus@9278
   595
    emscripten_set_keyup_callback(keyElement, data, 0, Emscripten_HandleKey);
icculus@9278
   596
    emscripten_set_keypress_callback(keyElement, data, 0, Emscripten_HandleKeyPress);
icculus@9278
   597
icculus@9278
   598
    emscripten_set_fullscreenchange_callback("#document", data, 0, Emscripten_HandleFullscreenChange);
icculus@9278
   599
icculus@9278
   600
    emscripten_set_resize_callback("#window", data, 0, Emscripten_HandleResize);
icculus@9278
   601
icculus@9278
   602
    emscripten_set_visibilitychange_callback(data, 0, Emscripten_HandleVisibilityChange);
icculus@9278
   603
}
icculus@9278
   604
icculus@9278
   605
void
icculus@9278
   606
Emscripten_UnregisterEventHandlers(SDL_WindowData *data)
icculus@9278
   607
{
icculus@9278
   608
    /* only works due to having one window */
icculus@9278
   609
    emscripten_set_mousemove_callback("#canvas", NULL, 0, NULL);
icculus@9278
   610
icculus@9278
   611
    emscripten_set_mousedown_callback("#canvas", NULL, 0, NULL);
icculus@9278
   612
    emscripten_set_mouseup_callback("#canvas", NULL, 0, NULL);
icculus@9278
   613
icculus@9278
   614
    emscripten_set_mouseenter_callback("#canvas", NULL, 0, NULL);
icculus@9278
   615
    emscripten_set_mouseleave_callback("#canvas", NULL, 0, NULL);
icculus@9278
   616
icculus@9278
   617
    emscripten_set_wheel_callback("#canvas", NULL, 0, NULL);
icculus@9278
   618
icculus@9278
   619
    emscripten_set_focus_callback("#canvas", NULL, 0, NULL);
icculus@9278
   620
    emscripten_set_blur_callback("#canvas", NULL, 0, NULL);
icculus@9278
   621
icculus@9278
   622
    emscripten_set_touchstart_callback("#canvas", NULL, 0, NULL);
icculus@9278
   623
    emscripten_set_touchend_callback("#canvas", NULL, 0, NULL);
icculus@9278
   624
    emscripten_set_touchmove_callback("#canvas", NULL, 0, NULL);
icculus@9278
   625
    emscripten_set_touchcancel_callback("#canvas", NULL, 0, NULL);
icculus@9278
   626
philipp@9377
   627
    const char *target = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT);
philipp@9377
   628
    if (!target) {
philipp@9377
   629
        target = "#window";
philipp@9377
   630
    }
icculus@9278
   631
philipp@9377
   632
    emscripten_set_keydown_callback(target, NULL, 0, NULL);
philipp@9377
   633
    emscripten_set_keyup_callback(target, NULL, 0, NULL);
philipp@9377
   634
philipp@9377
   635
    emscripten_set_keypress_callback(target, NULL, 0, NULL);
icculus@9278
   636
icculus@9278
   637
    emscripten_set_fullscreenchange_callback("#document", NULL, 0, NULL);
icculus@9278
   638
icculus@9278
   639
    emscripten_set_resize_callback("#window", NULL, 0, NULL);
icculus@9278
   640
icculus@9278
   641
    emscripten_set_visibilitychange_callback(NULL, 0, NULL);
icculus@9278
   642
}
icculus@9278
   643
icculus@9278
   644
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
icculus@9278
   645
icculus@9278
   646
/* vi: set ts=4 sw=4 expandtab: */