SDL  2.0
keyboard.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 2017 BlackBerry Limited
4 
5  This software is provided 'as-is', without any express or implied
6  warranty. In no event will the authors be held liable for any damages
7  arising from the use of this software.
8 
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12 
13  1. The origin of this software must not be misrepresented; you must not
14  claim that you wrote the original software. If you use this software
15  in a product, an acknowledgment in the product documentation would be
16  appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18  misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20 */
21 
22 #include "../../SDL_internal.h"
23 #include "../../events/SDL_keyboard_c.h"
24 #include "SDL_scancode.h"
25 #include "SDL_events.h"
26 #include "sdl_qnx.h"
27 #include <sys/keycodes.h>
28 
29 /**
30  * A map thta translates Screen key names to SDL scan codes.
31  * This map is incomplete, but should include most major keys.
32  */
33 static int key_to_sdl[] = {
34  [KEYCODE_SPACE] = SDL_SCANCODE_SPACE,
35  [KEYCODE_APOSTROPHE] = SDL_SCANCODE_APOSTROPHE,
36  [KEYCODE_COMMA] = SDL_SCANCODE_COMMA,
37  [KEYCODE_MINUS] = SDL_SCANCODE_MINUS,
38  [KEYCODE_PERIOD] = SDL_SCANCODE_PERIOD,
39  [KEYCODE_SLASH] = SDL_SCANCODE_SLASH,
40  [KEYCODE_ZERO] = SDL_SCANCODE_0,
41  [KEYCODE_ONE] = SDL_SCANCODE_1,
42  [KEYCODE_TWO] = SDL_SCANCODE_2,
43  [KEYCODE_THREE] = SDL_SCANCODE_3,
44  [KEYCODE_FOUR] = SDL_SCANCODE_4,
45  [KEYCODE_FIVE] = SDL_SCANCODE_5,
46  [KEYCODE_SIX] = SDL_SCANCODE_6,
47  [KEYCODE_SEVEN] = SDL_SCANCODE_7,
48  [KEYCODE_EIGHT] = SDL_SCANCODE_8,
49  [KEYCODE_NINE] = SDL_SCANCODE_9,
50  [KEYCODE_SEMICOLON] = SDL_SCANCODE_SEMICOLON,
51  [KEYCODE_EQUAL] = SDL_SCANCODE_EQUALS,
52  [KEYCODE_LEFT_BRACKET] = SDL_SCANCODE_LEFTBRACKET,
53  [KEYCODE_BACK_SLASH] = SDL_SCANCODE_BACKSLASH,
54  [KEYCODE_RIGHT_BRACKET] = SDL_SCANCODE_RIGHTBRACKET,
55  [KEYCODE_GRAVE] = SDL_SCANCODE_GRAVE,
56  [KEYCODE_A] = SDL_SCANCODE_A,
57  [KEYCODE_B] = SDL_SCANCODE_B,
58  [KEYCODE_C] = SDL_SCANCODE_C,
59  [KEYCODE_D] = SDL_SCANCODE_D,
60  [KEYCODE_E] = SDL_SCANCODE_E,
61  [KEYCODE_F] = SDL_SCANCODE_F,
62  [KEYCODE_G] = SDL_SCANCODE_G,
63  [KEYCODE_H] = SDL_SCANCODE_H,
64  [KEYCODE_I] = SDL_SCANCODE_I,
65  [KEYCODE_J] = SDL_SCANCODE_J,
66  [KEYCODE_K] = SDL_SCANCODE_K,
67  [KEYCODE_L] = SDL_SCANCODE_L,
68  [KEYCODE_M] = SDL_SCANCODE_M,
69  [KEYCODE_N] = SDL_SCANCODE_N,
70  [KEYCODE_O] = SDL_SCANCODE_O,
71  [KEYCODE_P] = SDL_SCANCODE_P,
72  [KEYCODE_Q] = SDL_SCANCODE_Q,
73  [KEYCODE_R] = SDL_SCANCODE_R,
74  [KEYCODE_S] = SDL_SCANCODE_S,
75  [KEYCODE_T] = SDL_SCANCODE_T,
76  [KEYCODE_U] = SDL_SCANCODE_U,
77  [KEYCODE_V] = SDL_SCANCODE_V,
78  [KEYCODE_W] = SDL_SCANCODE_W,
79  [KEYCODE_X] = SDL_SCANCODE_X,
80  [KEYCODE_Y] = SDL_SCANCODE_Y,
81  [KEYCODE_Z] = SDL_SCANCODE_Z,
82  [KEYCODE_UP] = SDL_SCANCODE_UP,
83  [KEYCODE_DOWN] = SDL_SCANCODE_DOWN,
84  [KEYCODE_LEFT] = SDL_SCANCODE_LEFT,
85  [KEYCODE_PG_UP] = SDL_SCANCODE_PAGEUP,
86  [KEYCODE_PG_DOWN] = SDL_SCANCODE_PAGEDOWN,
87  [KEYCODE_RIGHT] = SDL_SCANCODE_RIGHT,
88  [KEYCODE_RETURN] = SDL_SCANCODE_RETURN,
89  [KEYCODE_TAB] = SDL_SCANCODE_TAB,
90  [KEYCODE_ESCAPE] = SDL_SCANCODE_ESCAPE,
91 };
92 
93 /**
94  * Called from the event dispatcher when a keyboard event is encountered.
95  * Translates the event such that it can be handled by SDL.
96  * @param event Screen keyboard event
97  */
98 void
99 handleKeyboardEvent(screen_event_t event)
100 {
101  int val;
102  SDL_Scancode scancode;
103 
104  // Get the key value.
105  if (screen_get_event_property_iv(event, SCREEN_PROPERTY_SYM, &val) < 0) {
106  return;
107  }
108 
109  // Skip unrecognized keys.
110  if ((val < 0) || (val >= SDL_TABLESIZE(key_to_sdl))) {
111  return;
112  }
113 
114  // Translate to an SDL scan code.
115  scancode = key_to_sdl[val];
116  if (scancode == 0) {
117  return;
118  }
119 
120  // Get event flags (key state).
121  if (screen_get_event_property_iv(event, SCREEN_PROPERTY_FLAGS, &val) < 0) {
122  return;
123  }
124 
125  // Propagate the event to SDL.
126  // FIXME:
127  // Need to handle more key states (such as key combinations).
128  if (val & KEY_DOWN) {
129  SDL_SendKeyboardKey(SDL_PRESSED, scancode);
130  } else {
131  SDL_SendKeyboardKey(SDL_RELEASED, scancode);
132  }
133 }