src/video/emscripten/SDL_emscriptenevents.c
author Csongor Szabo <csongor.szabo@prezi.com>
Fri, 14 Oct 2016 17:06:28 +0100
changeset 10541 727f7d796b8d
parent 10338 638ec32cfcce
child 10629 813f1b3c63aa
permissions -rw-r--r--
emscripten: check if device pixel ratio has changed
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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_VOLUMEDOWN, /*IE, Chrome*/
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    /* 175 */   SDL_SCANCODE_VOLUMEUP, /*IE, Chrome*/
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    /* 176 */   SDL_SCANCODE_AUDIONEXT, /*IE, Chrome*/
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    /* 177 */   SDL_SCANCODE_AUDIOPREV, /*IE, Chrome*/
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    /* 178 */   SDL_SCANCODE_UNKNOWN,
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    /* 179 */   SDL_SCANCODE_AUDIOPLAY, /*IE, Chrome*/
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    /* 180 */   SDL_SCANCODE_UNKNOWN,
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    /* 181 */   SDL_SCANCODE_AUDIOMUTE, /*FX*/
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    /* 182 */   SDL_SCANCODE_VOLUMEDOWN, /*FX*/
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    /* 183 */   SDL_SCANCODE_VOLUMEUP, /*FX*/
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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)
icculus@9278
   302
{
icculus@9278
   303
    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
    }
slouken@10338
   353
slouken@10338
   354
    SDL_EventType sdl_event_type = (eventType == EMSCRIPTEN_EVENT_MOUSEDOWN ? SDL_PRESSED : SDL_RELEASED);
slouken@10338
   355
    SDL_SendMouseButton(window_data->window, 0, sdl_event_type, sdl_button);
slouken@10338
   356
    return SDL_GetEventState(sdl_event_type) == SDL_ENABLE;
icculus@9278
   357
}
icculus@9278
   358
philipp@9352
   359
EM_BOOL
icculus@9278
   360
Emscripten_HandleMouseFocus(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
icculus@9278
   361
{
icculus@9278
   362
    SDL_WindowData *window_data = userData;
admin@10318
   363
admin@10320
   364
    int mx = mouseEvent->canvasX, my = mouseEvent->canvasY;
admin@10320
   365
    EmscriptenPointerlockChangeEvent pointerlock_status;
admin@10320
   366
admin@10320
   367
    /* check for pointer lock */
telpe@10324
   368
    int isPointerLockSupported = emscripten_get_pointerlock_status(&pointerlock_status);
telpe@10324
   369
    int isPointerLocked = isPointerLockSupported == EMSCRIPTEN_RESULT_SUCCESS  ? pointerlock_status.isActive : SDL_FALSE;
admin@10320
   370
telpe@10324
   371
    if (!isPointerLocked) {
admin@10320
   372
        /* rescale (in case canvas is being scaled)*/
admin@10320
   373
        double client_w, client_h;
admin@10320
   374
        emscripten_get_element_css_size(NULL, &client_w, &client_h);
admin@10320
   375
boris@10326
   376
        mx = mx * (window_data->window->w / client_w);
boris@10326
   377
        my = my * (window_data->window->h / client_h);
telpe@10324
   378
        SDL_SendMouseMotion(window_data->window, 0, isPointerLocked, mx, my);
admin@10320
   379
    }
admin@10320
   380
admin@10318
   381
    SDL_SetMouseFocus(eventType == EMSCRIPTEN_EVENT_MOUSEENTER ? window_data->window : NULL);
slouken@10338
   382
    return SDL_GetEventState(SDL_WINDOWEVENT) == SDL_ENABLE;
icculus@9278
   383
}
icculus@9278
   384
philipp@9352
   385
EM_BOOL
icculus@9278
   386
Emscripten_HandleWheel(int eventType, const EmscriptenWheelEvent *wheelEvent, void *userData)
icculus@9278
   387
{
icculus@9278
   388
    SDL_WindowData *window_data = userData;
icculus@9278
   389
    SDL_SendMouseWheel(window_data->window, 0, wheelEvent->deltaX, -wheelEvent->deltaY, SDL_MOUSEWHEEL_NORMAL);
slouken@10338
   390
    return SDL_GetEventState(SDL_MOUSEWHEEL) == SDL_ENABLE;
icculus@9278
   391
}
icculus@9278
   392
philipp@9352
   393
EM_BOOL
icculus@9278
   394
Emscripten_HandleFocus(int eventType, const EmscriptenFocusEvent *wheelEvent, void *userData)
icculus@9278
   395
{
icculus@9278
   396
    SDL_WindowData *window_data = userData;
boris@10328
   397
    /* If the user switches away while keys are pressed (such as
boris@10328
   398
     * via Alt+Tab), key release events won't be received. */
boris@10328
   399
    if (eventType == EMSCRIPTEN_EVENT_BLUR) {
boris@10328
   400
        SDL_ResetKeyboard();
boris@10328
   401
    }
slouken@10338
   402
slouken@10338
   403
icculus@9278
   404
    SDL_SendWindowEvent(window_data->window, eventType == EMSCRIPTEN_EVENT_FOCUS ? SDL_WINDOWEVENT_FOCUS_GAINED : SDL_WINDOWEVENT_FOCUS_LOST, 0, 0);
slouken@10338
   405
    return SDL_GetEventState(SDL_WINDOWEVENT) == SDL_ENABLE;
icculus@9278
   406
}
icculus@9278
   407
philipp@9352
   408
EM_BOOL
icculus@9278
   409
Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData)
icculus@9278
   410
{
philipp@9591
   411
    SDL_WindowData *window_data = userData;
icculus@9278
   412
    int i;
admin@10316
   413
    double client_w, client_h;
slouken@10338
   414
    int preventDefault = 0;
icculus@9278
   415
philipp@9725
   416
    SDL_TouchID deviceId = 1;
slouken@9679
   417
    if (SDL_AddTouch(deviceId, "") < 0) {
slouken@9679
   418
         return 0;
icculus@9278
   419
    }
icculus@9278
   420
admin@10316
   421
    emscripten_get_element_css_size(NULL, &client_w, &client_h);
admin@10316
   422
icculus@9278
   423
    for (i = 0; i < touchEvent->numTouches; i++) {
philipp@9591
   424
        SDL_FingerID id;
philipp@9591
   425
        float x, y;
icculus@9278
   426
icculus@9278
   427
        if (!touchEvent->touches[i].isChanged)
icculus@9278
   428
            continue;
icculus@9278
   429
icculus@9278
   430
        id = touchEvent->touches[i].identifier;
admin@10316
   431
        x = touchEvent->touches[i].canvasX / client_w;
admin@10316
   432
        y = touchEvent->touches[i].canvasY / client_h;
icculus@9278
   433
icculus@10284
   434
        if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) {
icculus@10284
   435
            if (!window_data->finger_touching) {
icculus@10284
   436
                window_data->finger_touching = SDL_TRUE;
icculus@10284
   437
                window_data->first_finger = id;
icculus@10284
   438
                SDL_SendMouseMotion(window_data->window, SDL_TOUCH_MOUSEID, 0, x, y);
icculus@10284
   439
                SDL_SendMouseButton(window_data->window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
icculus@10284
   440
            }
icculus@10284
   441
            SDL_SendTouch(deviceId, id, SDL_TRUE, x, y, 1.0f);
slouken@10338
   442
slouken@10338
   443
            if (!preventDefault && SDL_GetEventState(SDL_FINGERDOWN) == SDL_ENABLE) {
slouken@10338
   444
                preventDefault = 1;
slouken@10338
   445
            }
icculus@10284
   446
        } else if (eventType == EMSCRIPTEN_EVENT_TOUCHMOVE) {
icculus@10284
   447
            if ((window_data->finger_touching) && (window_data->first_finger == id)) {
icculus@10284
   448
                SDL_SendMouseMotion(window_data->window, SDL_TOUCH_MOUSEID, 0, x, y);
icculus@10284
   449
            }
icculus@9278
   450
            SDL_SendTouchMotion(deviceId, id, x, y, 1.0f);
slouken@10338
   451
slouken@10338
   452
            if (!preventDefault && SDL_GetEventState(SDL_FINGERMOTION) == SDL_ENABLE) {
slouken@10338
   453
                preventDefault = 1;
slouken@10338
   454
            }
icculus@9278
   455
        } else {
icculus@10284
   456
            if ((window_data->finger_touching) && (window_data->first_finger == id)) {
icculus@10284
   457
                SDL_SendMouseButton(window_data->window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
icculus@10284
   458
                window_data->finger_touching = SDL_FALSE;
icculus@10284
   459
            }
icculus@9278
   460
            SDL_SendTouch(deviceId, id, SDL_FALSE, x, y, 1.0f);
slouken@10338
   461
slouken@10338
   462
            if (!preventDefault && SDL_GetEventState(SDL_FINGERUP) == SDL_ENABLE) {
slouken@10338
   463
                preventDefault = 1;
slouken@10338
   464
            }
icculus@9278
   465
        }
icculus@9278
   466
    }
icculus@9278
   467
slouken@10338
   468
    return preventDefault;
icculus@9278
   469
}
icculus@9278
   470
philipp@9352
   471
EM_BOOL
icculus@9278
   472
Emscripten_HandleKey(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
icculus@9278
   473
{
icculus@9278
   474
    Uint32 scancode;
icculus@9278
   475
icculus@9278
   476
    /* .keyCode is deprecated, but still the most reliable way to get keys */
icculus@9278
   477
    if (keyEvent->keyCode < SDL_arraysize(emscripten_scancode_table)) {
icculus@9278
   478
        scancode = emscripten_scancode_table[keyEvent->keyCode];
icculus@9278
   479
icculus@9278
   480
        if (scancode != SDL_SCANCODE_UNKNOWN) {
icculus@9278
   481
icculus@9278
   482
            if (keyEvent->location == DOM_KEY_LOCATION_RIGHT) {
icculus@9278
   483
                switch (scancode) {
icculus@9278
   484
                    case SDL_SCANCODE_LSHIFT:
icculus@9278
   485
                        scancode = SDL_SCANCODE_RSHIFT;
icculus@9278
   486
                        break;
icculus@9278
   487
                    case SDL_SCANCODE_LCTRL:
icculus@9278
   488
                        scancode = SDL_SCANCODE_RCTRL;
icculus@9278
   489
                        break;
icculus@9278
   490
                    case SDL_SCANCODE_LALT:
icculus@9278
   491
                        scancode = SDL_SCANCODE_RALT;
icculus@9278
   492
                        break;
icculus@9278
   493
                    case SDL_SCANCODE_LGUI:
icculus@9278
   494
                        scancode = SDL_SCANCODE_RGUI;
icculus@9278
   495
                        break;
icculus@9278
   496
                }
icculus@9278
   497
            }
slouken@10338
   498
            SDL_SendKeyboardKey(eventType == EMSCRIPTEN_EVENT_KEYDOWN ? SDL_PRESSED : SDL_RELEASED, scancode);
icculus@9278
   499
        }
icculus@9278
   500
    }
icculus@9278
   501
slouken@10338
   502
    SDL_bool prevent_default = SDL_GetEventState(eventType == EMSCRIPTEN_EVENT_KEYDOWN ? SDL_KEYDOWN : SDL_KEYUP) == SDL_ENABLE;
slouken@10338
   503
slouken@10338
   504
    /* if TEXTINPUT events are enabled we can't prevent keydown or we won't get keypress
slouken@10338
   505
     * we need to ALWAYS prevent backspace and tab otherwise chrome takes action and does bad navigation UX
icculus@9278
   506
     */
slouken@10338
   507
    if (eventType == EMSCRIPTEN_EVENT_KEYDOWN && SDL_GetEventState(SDL_TEXTINPUT) == SDL_ENABLE && keyEvent->keyCode != 8 /* backspace */ && keyEvent->keyCode != 9 /* tab */)
slouken@10338
   508
        prevent_default = SDL_FALSE;
slouken@10338
   509
slouken@10338
   510
    return prevent_default;
icculus@9278
   511
}
icculus@9278
   512
philipp@9352
   513
EM_BOOL
icculus@9278
   514
Emscripten_HandleKeyPress(int eventType, const EmscriptenKeyboardEvent *keyEvent, void *userData)
icculus@9278
   515
{
icculus@9278
   516
    char text[5];
philipp@9378
   517
    if (Emscripten_ConvertUTF32toUTF8(keyEvent->charCode, text)) {
philipp@9378
   518
        SDL_SendKeyboardText(text);
philipp@9378
   519
    }
slouken@10338
   520
    return SDL_GetEventState(SDL_TEXTINPUT) == SDL_ENABLE;
icculus@9278
   521
}
icculus@9278
   522
philipp@9352
   523
EM_BOOL
icculus@9278
   524
Emscripten_HandleFullscreenChange(int eventType, const EmscriptenFullscreenChangeEvent *fullscreenChangeEvent, void *userData)
icculus@9278
   525
{
icculus@9278
   526
    SDL_WindowData *window_data = userData;
icculus@9278
   527
    if(fullscreenChangeEvent->isFullscreen)
icculus@9278
   528
    {
icculus@9278
   529
        window_data->window->flags |= window_data->requested_fullscreen_mode;
icculus@9278
   530
icculus@9278
   531
        window_data->requested_fullscreen_mode = 0;
icculus@9278
   532
slouken@10317
   533
        if(!window_data->requested_fullscreen_mode)
slouken@10317
   534
            window_data->window->flags |= SDL_WINDOW_FULLSCREEN; /*we didn't reqest fullscreen*/
icculus@9278
   535
    }
icculus@9278
   536
    else
icculus@9278
   537
    {
icculus@9278
   538
        window_data->window->flags &= ~FULLSCREEN_MASK;
icculus@9278
   539
    }
icculus@9278
   540
icculus@9278
   541
    return 0;
icculus@9278
   542
}
icculus@9278
   543
philipp@9352
   544
EM_BOOL
icculus@9278
   545
Emscripten_HandleResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
icculus@9278
   546
{
icculus@9278
   547
    SDL_WindowData *window_data = userData;
csongor@10541
   548
csongor@10541
   549
    /* update pixel ratio */
csongor@10541
   550
    window_data->pixel_ratio = emscripten_get_device_pixel_ratio();
csongor@10541
   551
slouken@10317
   552
    if(!(window_data->window->flags & FULLSCREEN_MASK))
icculus@9278
   553
    {
icculus@9278
   554
        /* this will only work if the canvas size is set through css */
icculus@9278
   555
        if(window_data->window->flags & SDL_WINDOW_RESIZABLE)
icculus@9278
   556
        {
icculus@9278
   557
            double w = window_data->window->w;
icculus@9278
   558
            double h = window_data->window->h;
icculus@9278
   559
icculus@9278
   560
            if(window_data->external_size) {
icculus@9278
   561
                emscripten_get_element_css_size(NULL, &w, &h);
icculus@9278
   562
            }
icculus@9278
   563
icculus@9278
   564
            emscripten_set_canvas_size(w * window_data->pixel_ratio, h * window_data->pixel_ratio);
icculus@9278
   565
icculus@9278
   566
            /* set_canvas_size unsets this */
icculus@9278
   567
            if (!window_data->external_size && window_data->pixel_ratio != 1.0f) {
icculus@9278
   568
                emscripten_set_element_css_size(NULL, w, h);
icculus@9278
   569
            }
icculus@9278
   570
icculus@9278
   571
            SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, w, h);
icculus@9278
   572
        }
icculus@9278
   573
    }
icculus@9278
   574
icculus@9278
   575
    return 0;
icculus@9278
   576
}
icculus@9278
   577
philipp@9352
   578
EM_BOOL
slouken@10317
   579
Emscripten_HandleCanvasResize(int eventType, const void *reserved, void *userData)
slouken@10317
   580
{
slouken@10317
   581
    /*this is used during fullscreen changes*/
slouken@10317
   582
    SDL_WindowData *window_data = userData;
slouken@10317
   583
slouken@10317
   584
    if(window_data->fullscreen_resize)
slouken@10317
   585
    {
slouken@10317
   586
        double css_w, css_h;
slouken@10317
   587
        emscripten_get_element_css_size(NULL, &css_w, &css_h);
slouken@10317
   588
        SDL_SendWindowEvent(window_data->window, SDL_WINDOWEVENT_RESIZED, css_w, css_h);
slouken@10317
   589
    }
slouken@10317
   590
slouken@10317
   591
    return 0;
slouken@10317
   592
}
slouken@10317
   593
slouken@10317
   594
EM_BOOL
icculus@9278
   595
Emscripten_HandleVisibilityChange(int eventType, const EmscriptenVisibilityChangeEvent *visEvent, void *userData)
icculus@9278
   596
{
icculus@9278
   597
    SDL_WindowData *window_data = userData;
icculus@9278
   598
    SDL_SendWindowEvent(window_data->window, visEvent->hidden ? SDL_WINDOWEVENT_HIDDEN : SDL_WINDOWEVENT_SHOWN, 0, 0);
icculus@9278
   599
    return 0;
icculus@9278
   600
}
icculus@9278
   601
icculus@9278
   602
void
icculus@9278
   603
Emscripten_RegisterEventHandlers(SDL_WindowData *data)
icculus@9278
   604
{
icculus@9278
   605
    /* There is only one window and that window is the canvas */
icculus@9278
   606
    emscripten_set_mousemove_callback("#canvas", data, 0, Emscripten_HandleMouseMove);
icculus@9278
   607
icculus@9278
   608
    emscripten_set_mousedown_callback("#canvas", data, 0, Emscripten_HandleMouseButton);
admin@10319
   609
    emscripten_set_mouseup_callback("#document", data, 0, Emscripten_HandleMouseButton);
icculus@9278
   610
icculus@9278
   611
    emscripten_set_mouseenter_callback("#canvas", data, 0, Emscripten_HandleMouseFocus);
icculus@9278
   612
    emscripten_set_mouseleave_callback("#canvas", data, 0, Emscripten_HandleMouseFocus);
icculus@9278
   613
icculus@9278
   614
    emscripten_set_wheel_callback("#canvas", data, 0, Emscripten_HandleWheel);
icculus@9278
   615
boris@10327
   616
    emscripten_set_focus_callback("#window", data, 0, Emscripten_HandleFocus);
boris@10327
   617
    emscripten_set_blur_callback("#window", data, 0, Emscripten_HandleFocus);
icculus@9278
   618
icculus@9278
   619
    emscripten_set_touchstart_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   620
    emscripten_set_touchend_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   621
    emscripten_set_touchmove_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   622
    emscripten_set_touchcancel_callback("#canvas", data, 0, Emscripten_HandleTouch);
icculus@9278
   623
icculus@9278
   624
    /* Keyboard events are awkward */
icculus@9278
   625
    const char *keyElement = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT);
icculus@9278
   626
    if (!keyElement) keyElement = "#window";
icculus@9278
   627
icculus@9278
   628
    emscripten_set_keydown_callback(keyElement, data, 0, Emscripten_HandleKey);
icculus@9278
   629
    emscripten_set_keyup_callback(keyElement, data, 0, Emscripten_HandleKey);
icculus@9278
   630
    emscripten_set_keypress_callback(keyElement, data, 0, Emscripten_HandleKeyPress);
icculus@9278
   631
icculus@9278
   632
    emscripten_set_fullscreenchange_callback("#document", data, 0, Emscripten_HandleFullscreenChange);
icculus@9278
   633
icculus@9278
   634
    emscripten_set_resize_callback("#window", data, 0, Emscripten_HandleResize);
icculus@9278
   635
icculus@9278
   636
    emscripten_set_visibilitychange_callback(data, 0, Emscripten_HandleVisibilityChange);
icculus@9278
   637
}
icculus@9278
   638
icculus@9278
   639
void
icculus@9278
   640
Emscripten_UnregisterEventHandlers(SDL_WindowData *data)
icculus@9278
   641
{
icculus@9278
   642
    /* only works due to having one window */
icculus@9278
   643
    emscripten_set_mousemove_callback("#canvas", NULL, 0, NULL);
icculus@9278
   644
icculus@9278
   645
    emscripten_set_mousedown_callback("#canvas", NULL, 0, NULL);
admin@10319
   646
    emscripten_set_mouseup_callback("#document", NULL, 0, NULL);
icculus@9278
   647
icculus@9278
   648
    emscripten_set_mouseenter_callback("#canvas", NULL, 0, NULL);
icculus@9278
   649
    emscripten_set_mouseleave_callback("#canvas", NULL, 0, NULL);
icculus@9278
   650
icculus@9278
   651
    emscripten_set_wheel_callback("#canvas", NULL, 0, NULL);
icculus@9278
   652
boris@10327
   653
    emscripten_set_focus_callback("#window", NULL, 0, NULL);
boris@10327
   654
    emscripten_set_blur_callback("#window", NULL, 0, NULL);
icculus@9278
   655
icculus@9278
   656
    emscripten_set_touchstart_callback("#canvas", NULL, 0, NULL);
icculus@9278
   657
    emscripten_set_touchend_callback("#canvas", NULL, 0, NULL);
icculus@9278
   658
    emscripten_set_touchmove_callback("#canvas", NULL, 0, NULL);
icculus@9278
   659
    emscripten_set_touchcancel_callback("#canvas", NULL, 0, NULL);
icculus@9278
   660
philipp@9377
   661
    const char *target = SDL_GetHint(SDL_HINT_EMSCRIPTEN_KEYBOARD_ELEMENT);
philipp@9377
   662
    if (!target) {
philipp@9377
   663
        target = "#window";
philipp@9377
   664
    }
icculus@9278
   665
philipp@9377
   666
    emscripten_set_keydown_callback(target, NULL, 0, NULL);
philipp@9377
   667
    emscripten_set_keyup_callback(target, NULL, 0, NULL);
philipp@9377
   668
philipp@9377
   669
    emscripten_set_keypress_callback(target, NULL, 0, NULL);
icculus@9278
   670
icculus@9278
   671
    emscripten_set_fullscreenchange_callback("#document", NULL, 0, NULL);
icculus@9278
   672
icculus@9278
   673
    emscripten_set_resize_callback("#window", NULL, 0, NULL);
icculus@9278
   674
icculus@9278
   675
    emscripten_set_visibilitychange_callback(NULL, 0, NULL);
icculus@9278
   676
}
icculus@9278
   677
icculus@9278
   678
#endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN */
icculus@9278
   679
icculus@9278
   680
/* vi: set ts=4 sw=4 expandtab: */