src/video/emscripten/SDL_emscriptenevents.c
author Boris Gjenero <boris.gjenero@gmail.com>
Tue, 13 Sep 2016 00:03:46 -0700
changeset 10326 b7059a6e0de7
parent 10325 743e0f5e8ace
child 10327 47d840cce014
permissions -rw-r--r--
Mouse events use CSS coordinates, so don't scale by pixel_ratio
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2016 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;
boris@10325
   304
    int mx, my;
boris@10325
   305
    static double residualx = 0, residualy = 0;
icculus@9278
   306
    EmscriptenPointerlockChangeEvent pointerlock_status;
icculus@9278
   307
boris@10325
   308
    /* rescale (in case canvas is being scaled)*/
boris@10325
   309
    double client_w, client_h, xscale, yscale;
boris@10325
   310
    emscripten_get_element_css_size(NULL, &client_w, &client_h);
boris@10326
   311
    xscale = window_data->window->w / client_w;
boris@10326
   312
    yscale = window_data->window->h / client_h;
boris@10325
   313
icculus@9278
   314
    /* check for pointer lock */
telpe@10324
   315
    int isPointerLockSupported = emscripten_get_pointerlock_status(&pointerlock_status);
telpe@10324
   316
    int isPointerLocked = isPointerLockSupported == EMSCRIPTEN_RESULT_SUCCESS  ? pointerlock_status.isActive : SDL_FALSE;
icculus@9278
   317
telpe@10324
   318
    if (isPointerLocked) {
boris@10325
   319
        residualx += mouseEvent->movementX * xscale;
boris@10325
   320
        residualy += mouseEvent->movementY * yscale;
boris@10325
   321
        /* Let slow sub-pixel motion accumulate. Don't lose it. */
boris@10325
   322
        mx = residualx;
boris@10325
   323
        residualx -= mx;
boris@10325
   324
        my = residualy;
boris@10325
   325
        residualy -= my;
boris@10325
   326
    } else {
boris@10325
   327
        mx = mouseEvent->canvasX * xscale;
boris@10325
   328
        my = mouseEvent->canvasY * yscale;
icculus@9278
   329
    }
icculus@9278
   330
telpe@10324
   331
    SDL_SendMouseMotion(window_data->window, 0, isPointerLocked, mx, my);
icculus@9278
   332
    return 0;
icculus@9278
   333
}
icculus@9278
   334
philipp@9352
   335
EM_BOOL
icculus@9278
   336
Emscripten_HandleMouseButton(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
icculus@9278
   337
{
icculus@9278
   338
    SDL_WindowData *window_data = userData;
icculus@9278
   339
    uint32_t sdl_button;
icculus@9278
   340
    switch (mouseEvent->button) {
icculus@9278
   341
        case 0:
icculus@9278
   342
            sdl_button = SDL_BUTTON_LEFT;
icculus@9278
   343
            break;
icculus@9278
   344
        case 1:
icculus@9278
   345
            sdl_button = SDL_BUTTON_MIDDLE;
icculus@9278
   346
            break;
icculus@9278
   347
        case 2:
icculus@9278
   348
            sdl_button = SDL_BUTTON_RIGHT;
icculus@9278
   349
            break;
icculus@9278
   350
        default:
icculus@9278
   351
            return 0;
icculus@9278
   352
    }
icculus@9278
   353
    SDL_SendMouseButton(window_data->window, 0, eventType == EMSCRIPTEN_EVENT_MOUSEDOWN ? SDL_PRESSED : SDL_RELEASED, sdl_button);
icculus@9278
   354
    return 1;
icculus@9278
   355
}
icculus@9278
   356
philipp@9352
   357
EM_BOOL
icculus@9278
   358
Emscripten_HandleMouseFocus(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
icculus@9278
   359
{
icculus@9278
   360
    SDL_WindowData *window_data = userData;
admin@10318
   361
admin@10320
   362
    int mx = mouseEvent->canvasX, my = mouseEvent->canvasY;
admin@10320
   363
    EmscriptenPointerlockChangeEvent pointerlock_status;
admin@10320
   364
admin@10320
   365
    /* check for pointer lock */
telpe@10324
   366
    int isPointerLockSupported = emscripten_get_pointerlock_status(&pointerlock_status);
telpe@10324
   367
    int isPointerLocked = isPointerLockSupported == EMSCRIPTEN_RESULT_SUCCESS  ? pointerlock_status.isActive : SDL_FALSE;
admin@10320
   368
telpe@10324
   369
    if (!isPointerLocked) {
admin@10320
   370
        /* rescale (in case canvas is being scaled)*/
admin@10320
   371
        double client_w, client_h;
admin@10320
   372
        emscripten_get_element_css_size(NULL, &client_w, &client_h);
admin@10320
   373
boris@10326
   374
        mx = mx * (window_data->window->w / client_w);
boris@10326
   375
        my = my * (window_data->window->h / client_h);
telpe@10324
   376
        SDL_SendMouseMotion(window_data->window, 0, isPointerLocked, mx, my);
admin@10320
   377
    }
admin@10320
   378
admin@10318
   379
    SDL_SetMouseFocus(eventType == EMSCRIPTEN_EVENT_MOUSEENTER ? window_data->window : NULL);
icculus@9278
   380
    return 1;
icculus@9278
   381
}
icculus@9278
   382
philipp@9352
   383
EM_BOOL
icculus@9278
   384
Emscripten_HandleWheel(int eventType, const EmscriptenWheelEvent *wheelEvent, void *userData)
icculus@9278
   385
{
icculus@9278
   386
    SDL_WindowData *window_data = userData;
icculus@9278
   387
    SDL_SendMouseWheel(window_data->window, 0, wheelEvent->deltaX, -wheelEvent->deltaY, SDL_MOUSEWHEEL_NORMAL);
icculus@9278
   388
    return 1;
icculus@9278
   389
}
icculus@9278
   390
philipp@9352
   391
EM_BOOL
icculus@9278
   392
Emscripten_HandleFocus(int eventType, const EmscriptenFocusEvent *wheelEvent, void *userData)
icculus@9278
   393
{
icculus@9278
   394
    SDL_WindowData *window_data = userData;
icculus@9278
   395
    SDL_SendWindowEvent(window_data->window, eventType == EMSCRIPTEN_EVENT_FOCUS ? SDL_WINDOWEVENT_FOCUS_GAINED : SDL_WINDOWEVENT_FOCUS_LOST, 0, 0);
icculus@9278
   396
    return 1;
icculus@9278
   397
}
icculus@9278
   398
philipp@9352
   399
EM_BOOL
icculus@9278
   400
Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData)
icculus@9278
   401
{
philipp@9591
   402
    SDL_WindowData *window_data = userData;
icculus@9278
   403
    int i;
admin@10316
   404
    double client_w, client_h;
icculus@9278
   405
philipp@9725
   406
    SDL_TouchID deviceId = 1;
slouken@9679
   407
    if (SDL_AddTouch(deviceId, "") < 0) {
slouken@9679
   408
         return 0;
icculus@9278
   409
    }
icculus@9278
   410
admin@10316
   411
    emscripten_get_element_css_size(NULL, &client_w, &client_h);
admin@10316
   412
icculus@9278
   413
    for (i = 0; i < touchEvent->numTouches; i++) {
philipp@9591
   414
        SDL_FingerID id;
philipp@9591
   415
        float x, y;
icculus@9278
   416
icculus@9278
   417
        if (!touchEvent->touches[i].isChanged)
icculus@9278
   418
            continue;
icculus@9278
   419
icculus@9278
   420
        id = touchEvent->touches[i].identifier;
admin@10316
   421
        x = touchEvent->touches[i].canvasX / client_w;
admin@10316
   422
        y = touchEvent->touches[i].canvasY / client_h;
icculus@9278
   423
icculus@10284
   424
        if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) {
icculus@10284
   425
            if (!window_data->finger_touching) {
icculus@10284
   426
                window_data->finger_touching = SDL_TRUE;
icculus@10284
   427
                window_data->first_finger = id;
icculus@10284
   428
                SDL_SendMouseMotion(window_data->window, SDL_TOUCH_MOUSEID, 0, x, y);
icculus@10284
   429
                SDL_SendMouseButton(window_data->window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
icculus@10284
   430
            }
icculus@10284
   431
            SDL_SendTouch(deviceId, id, SDL_TRUE, x, y, 1.0f);
icculus@10284
   432
        } else if (eventType == EMSCRIPTEN_EVENT_TOUCHMOVE) {
icculus@10284
   433
            if ((window_data->finger_touching) && (window_data->first_finger == id)) {
icculus@10284
   434
                SDL_SendMouseMotion(window_data->window, SDL_TOUCH_MOUSEID, 0, x, y);
icculus@10284
   435
            }
icculus@9278
   436
            SDL_SendTouchMotion(deviceId, id, x, y, 1.0f);
icculus@9278
   437
        } else {
icculus@10284
   438
            if ((window_data->finger_touching) && (window_data->first_finger == id)) {
icculus@10284
   439
                SDL_SendMouseButton(window_data->window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
icculus@10284
   440
                window_data->finger_touching = SDL_FALSE;
icculus@10284
   441
            }
icculus@9278
   442
            SDL_SendTouch(deviceId, id, SDL_FALSE, x, y, 1.0f);
icculus@9278
   443
        }
icculus@9278
   444
    }
icculus@9278
   445
icculus@9278
   446
icculus@9278
   447
    return 1;
icculus@9278
   448
}
icculus@9278
   449
philipp@9352
   450
EM_BOOL
icculus@9278
   451
Emscripten_HandleKey(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
icculus@9278
   452
{
icculus@9278
   453
    Uint32 scancode;
icculus@9278
   454
icculus@9278
   455
    /* .keyCode is deprecated, but still the most reliable way to get keys */
icculus@9278
   456
    if (keyEvent->keyCode < SDL_arraysize(emscripten_scancode_table)) {
icculus@9278
   457
        scancode = emscripten_scancode_table[keyEvent->keyCode];
icculus@9278
   458
icculus@9278
   459
        if (scancode != SDL_SCANCODE_UNKNOWN) {
icculus@9278
   460
icculus@9278
   461
            if (keyEvent->location == DOM_KEY_LOCATION_RIGHT) {
icculus@9278
   462
                switch (scancode) {
icculus@9278
   463
                    case SDL_SCANCODE_LSHIFT:
icculus@9278
   464
                        scancode = SDL_SCANCODE_RSHIFT;
icculus@9278
   465
                        break;
icculus@9278
   466
                    case SDL_SCANCODE_LCTRL:
icculus@9278
   467
                        scancode = SDL_SCANCODE_RCTRL;
icculus@9278
   468
                        break;
icculus@9278
   469
                    case SDL_SCANCODE_LALT:
icculus@9278
   470
                        scancode = SDL_SCANCODE_RALT;
icculus@9278
   471
                        break;
icculus@9278
   472
                    case SDL_SCANCODE_LGUI:
icculus@9278
   473
                        scancode = SDL_SCANCODE_RGUI;
icculus@9278
   474
                        break;
icculus@9278
   475
                }
icculus@9278
   476
            }
icculus@9278
   477
            SDL_SendKeyboardKey(eventType == EMSCRIPTEN_EVENT_KEYDOWN ?
icculus@9278
   478
                                SDL_PRESSED : SDL_RELEASED, scancode);
icculus@9278
   479
        }
icculus@9278
   480
    }
icculus@9278
   481
icculus@9278
   482
    /* if we prevent keydown, we won't get keypress
icculus@9278
   483
     * also we need to ALWAYS prevent backspace and tab otherwise chrome takes action and does bad navigation UX
icculus@9278
   484
     */
icculus@9278
   485
    return SDL_GetEventState(SDL_TEXTINPUT) != SDL_ENABLE || eventType != EMSCRIPTEN_EVENT_KEYDOWN
icculus@9278
   486
            || keyEvent->keyCode == 8 /* backspace */ || keyEvent->keyCode == 9 /* tab */;
icculus@9278
   487
}
icculus@9278
   488
philipp@9352
   489
EM_BOOL
icculus@9278
   490
Emscripten_HandleKeyPress(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
icculus@9278
   491
{
icculus@9278
   492
    char text[5];
philipp@9378
   493
    if (Emscripten_ConvertUTF32toUTF8(keyEvent->charCode, text)) {
philipp@9378
   494
        SDL_SendKeyboardText(text);
philipp@9378
   495
    }
icculus@9278
   496
    return 1;
icculus@9278
   497
}
icculus@9278
   498
philipp@9352
   499
EM_BOOL
icculus@9278
   500
Emscripten_HandleFullscreenChange(int eventType, const EmscriptenFullscreenChangeEvent *fullscreenChangeEvent, void *userData)
icculus@9278
   501
{
icculus@9278
   502
    SDL_WindowData *window_data = userData;
icculus@9278
   503
    if(fullscreenChangeEvent->isFullscreen)
icculus@9278
   504
    {
icculus@9278
   505
        SDL_bool is_desktop_fullscreen;
icculus@9278
   506
        window_data->window->flags |= window_data->requested_fullscreen_mode;
icculus@9278
   507
icculus@9278
   508
        window_data->requested_fullscreen_mode = 0;
icculus@9278
   509
slouken@10317
   510
        if(!window_data->requested_fullscreen_mode)
slouken@10317
   511
            window_data->window->flags |= SDL_WINDOW_FULLSCREEN; /*we didn't reqest fullscreen*/
icculus@9278
   512
    }
icculus@9278
   513
    else
icculus@9278
   514
    {
icculus@9278
   515
        window_data->window->flags &= ~FULLSCREEN_MASK;
icculus@9278
   516
    }
icculus@9278
   517
icculus@9278
   518
    return 0;
icculus@9278
   519
}
icculus@9278
   520
philipp@9352
   521
EM_BOOL
icculus@9278
   522
Emscripten_HandleResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
icculus@9278
   523
{
icculus@9278
   524
    SDL_WindowData *window_data = userData;
slouken@10317
   525
    if(!(window_data->window->flags & FULLSCREEN_MASK))
icculus@9278
   526
    {
icculus@9278
   527
        /* this will only work if the canvas size is set through css */
icculus@9278
   528
        if(window_data->window->flags & SDL_WINDOW_RESIZABLE)
icculus@9278
   529
        {
icculus@9278
   530
            double w = window_data->window->w;
icculus@9278
   531
            double h = window_data->window->h;
icculus@9278
   532
icculus@9278
   533
            if(window_data->external_size) {
icculus@9278
   534
                emscripten_get_element_css_size(NULL, &w, &h);
icculus@9278
   535
            }
icculus@9278
   536
icculus@9278
   537
            emscripten_set_canvas_size(w * window_data->pixel_ratio, h * window_data->pixel_ratio);
icculus@9278
   538
icculus@9278
   539
            /* set_canvas_size unsets this */
icculus@9278
   540
            if (!window_data->external_size && window_data->pixel_ratio != 1.0f) {
icculus@9278
   541
                emscripten_set_element_css_size(NULL, w, h);
icculus@9278
   542
            }
icculus@9278
   543
icculus@9278
   544
            SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, w, h);
icculus@9278
   545
        }
icculus@9278
   546
    }
icculus@9278
   547
icculus@9278
   548
    return 0;
icculus@9278
   549
}
icculus@9278
   550
philipp@9352
   551
EM_BOOL
slouken@10317
   552
Emscripten_HandleCanvasResize(int eventType, const void *reserved, void *userData)
slouken@10317
   553
{
slouken@10317
   554
    /*this is used during fullscreen changes*/
slouken@10317
   555
    SDL_WindowData *window_data = userData;
slouken@10317
   556
slouken@10317
   557
    if(window_data->fullscreen_resize)
slouken@10317
   558
    {
slouken@10317
   559
        double css_w, css_h;
slouken@10317
   560
        emscripten_get_element_css_size(NULL, &css_w, &css_h);
slouken@10317
   561
        SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, css_w, css_h);
slouken@10317
   562
    }
slouken@10317
   563
slouken@10317
   564
    return 0;
slouken@10317
   565
}
slouken@10317
   566
slouken@10317
   567
EM_BOOL
icculus@9278
   568
Emscripten_HandleVisibilityChange(int eventType, const EmscriptenVisibilityChangeEvent *visEvent, void *userData)
icculus@9278
   569
{
icculus@9278
   570
    SDL_WindowData *window_data = userData;
icculus@9278
   571
    SDL_SendWindowEvent(window_data->window, visEvent->hidden ? SDL_WINDOWEVENT_HIDDEN : SDL_WINDOWEVENT_SHOWN, 0, 0);
icculus@9278
   572
    return 0;
icculus@9278
   573
}
icculus@9278
   574
icculus@9278
   575
void
icculus@9278
   576
Emscripten_RegisterEventHandlers(SDL_WindowData *data)
icculus@9278
   577
{
icculus@9278
   578
    /* There is only one window and that window is the canvas */
icculus@9278
   579
    emscripten_set_mousemove_callback("#canvas", data, 0, Emscripten_HandleMouseMove);
icculus@9278
   580
icculus@9278
   581
    emscripten_set_mousedown_callback("#canvas", data, 0, Emscripten_HandleMouseButton);
admin@10319
   582
    emscripten_set_mouseup_callback("#document", data, 0, Emscripten_HandleMouseButton);
icculus@9278
   583
icculus@9278
   584
    emscripten_set_mouseenter_callback("#canvas", data, 0, Emscripten_HandleMouseFocus);
icculus@9278
   585
    emscripten_set_mouseleave_callback("#canvas", data, 0, Emscripten_HandleMouseFocus);
icculus@9278
   586
icculus@9278
   587
    emscripten_set_wheel_callback("#canvas", data, 0, Emscripten_HandleWheel);
icculus@9278
   588
icculus@9278
   589
    emscripten_set_focus_callback("#canvas", data, 0, Emscripten_HandleFocus);
icculus@9278
   590
    emscripten_set_blur_callback("#canvas", data, 0, Emscripten_HandleFocus);
icculus@9278
   591
icculus@9278
   592
    emscripten_set_touchstart_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   593
    emscripten_set_touchend_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   594
    emscripten_set_touchmove_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   595
    emscripten_set_touchcancel_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   596
icculus@9278
   597
    /* Keyboard events are awkward */
icculus@9278
   598
    const char *keyElement = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT);
icculus@9278
   599
    if (!keyElement) keyElement = "#window";
icculus@9278
   600
icculus@9278
   601
    emscripten_set_keydown_callback(keyElement, data, 0, Emscripten_HandleKey);
icculus@9278
   602
    emscripten_set_keyup_callback(keyElement, data, 0, Emscripten_HandleKey);
icculus@9278
   603
    emscripten_set_keypress_callback(keyElement, data, 0, Emscripten_HandleKeyPress);
icculus@9278
   604
icculus@9278
   605
    emscripten_set_fullscreenchange_callback("#document", data, 0, Emscripten_HandleFullscreenChange);
icculus@9278
   606
icculus@9278
   607
    emscripten_set_resize_callback("#window", data, 0, Emscripten_HandleResize);
icculus@9278
   608
icculus@9278
   609
    emscripten_set_visibilitychange_callback(data, 0, Emscripten_HandleVisibilityChange);
icculus@9278
   610
}
icculus@9278
   611
icculus@9278
   612
void
icculus@9278
   613
Emscripten_UnregisterEventHandlers(SDL_WindowData *data)
icculus@9278
   614
{
icculus@9278
   615
    /* only works due to having one window */
icculus@9278
   616
    emscripten_set_mousemove_callback("#canvas", NULL, 0, NULL);
icculus@9278
   617
icculus@9278
   618
    emscripten_set_mousedown_callback("#canvas", NULL, 0, NULL);
admin@10319
   619
    emscripten_set_mouseup_callback("#document", NULL, 0, NULL);
icculus@9278
   620
icculus@9278
   621
    emscripten_set_mouseenter_callback("#canvas", NULL, 0, NULL);
icculus@9278
   622
    emscripten_set_mouseleave_callback("#canvas", NULL, 0, NULL);
icculus@9278
   623
icculus@9278
   624
    emscripten_set_wheel_callback("#canvas", NULL, 0, NULL);
icculus@9278
   625
icculus@9278
   626
    emscripten_set_focus_callback("#canvas", NULL, 0, NULL);
icculus@9278
   627
    emscripten_set_blur_callback("#canvas", NULL, 0, NULL);
icculus@9278
   628
icculus@9278
   629
    emscripten_set_touchstart_callback("#canvas", NULL, 0, NULL);
icculus@9278
   630
    emscripten_set_touchend_callback("#canvas", NULL, 0, NULL);
icculus@9278
   631
    emscripten_set_touchmove_callback("#canvas", NULL, 0, NULL);
icculus@9278
   632
    emscripten_set_touchcancel_callback("#canvas", NULL, 0, NULL);
icculus@9278
   633
philipp@9377
   634
    const char *target = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT);
philipp@9377
   635
    if (!target) {
philipp@9377
   636
        target = "#window";
philipp@9377
   637
    }
icculus@9278
   638
philipp@9377
   639
    emscripten_set_keydown_callback(target, NULL, 0, NULL);
philipp@9377
   640
    emscripten_set_keyup_callback(target, NULL, 0, NULL);
philipp@9377
   641
philipp@9377
   642
    emscripten_set_keypress_callback(target, NULL, 0, NULL);
icculus@9278
   643
icculus@9278
   644
    emscripten_set_fullscreenchange_callback("#document", NULL, 0, NULL);
icculus@9278
   645
icculus@9278
   646
    emscripten_set_resize_callback("#window", NULL, 0, NULL);
icculus@9278
   647
icculus@9278
   648
    emscripten_set_visibilitychange_callback(NULL, 0, NULL);
icculus@9278
   649
}
icculus@9278
   650
icculus@9278
   651
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
icculus@9278
   652
icculus@9278
   653
/* vi: set ts=4 sw=4 expandtab: */