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annotate src/video/ataricommon/SDL_biosevents.c @ 1907:06c27a737b7a

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Streamlined the API a bit and optimized the software renderer.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 15 Jul 2006 09:46:36 +0000
parents c121d94672cb
children d20f4510c718
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /*
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25 * Atari keyboard events manager, using BIOS
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26 *
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27 * Patrice Mandin
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28 */
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29
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30 /* Mint includes */
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31 #include <mint/osbind.h>
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32 #include <mint/cookie.h>
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33
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34 #include "../../events/SDL_sysevents.h"
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35 #include "../../events/SDL_events_c.h"
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36
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37 #include "SDL_atarikeys.h"
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38 #include "SDL_atarievents_c.h"
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39 #include "SDL_xbiosevents_c.h"
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40 #include "SDL_ataridevmouse_c.h"
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41
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42 /* To save state of keyboard */
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43 #define ATARIBIOS_MAXKEYS 128
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44
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45 static unsigned char bios_currentkeyboard[ATARIBIOS_MAXKEYS];
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46 static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
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47 static unsigned char bios_currentascii[ATARIBIOS_MAXKEYS];
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48 static SDL_bool use_dev_mouse = SDL_FALSE;
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49
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50 /* Special keys state */
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51 enum
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52 {
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53 K_RSHIFT = 0,
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54 K_LSHIFT,
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55 K_CTRL,
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56 K_ALT,
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57 K_CAPSLOCK,
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58 K_CLRHOME,
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59 K_INSERT
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60 };
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61
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62 /* The translation tables from a console scancode to a SDL keysym */
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63 static SDLKey keymap[ATARIBIOS_MAXKEYS];
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64
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65 static SDL_keysym *TranslateKey(int scancode, int asciicode,
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66 SDL_keysym * keysym, SDL_bool pressed);
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67 static void UpdateSpecialKeys(int special_keys_state);
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68
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69 void
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70 AtariBios_InitOSKeymap(_THIS)
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71 {
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72 int i, vectors_mask;
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73 unsigned long dummy;
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74
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75 SDL_memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
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76 SDL_memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
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77
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78 /* Initialize keymap */
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79 for (i = 0; i < sizeof(keymap); i++)
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80 keymap[i] = SDLK_UNKNOWN;
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81
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82 /* Functions keys */
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83 for (i = 0; i < 10; i++)
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84 keymap[SCANCODE_F1 + i] = SDLK_F1 + i;
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85
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86 /* Cursor keypad */
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87 keymap[SCANCODE_HELP] = SDLK_HELP;
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88 keymap[SCANCODE_UNDO] = SDLK_UNDO;
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89 keymap[SCANCODE_INSERT] = SDLK_INSERT;
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90 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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91 keymap[SCANCODE_UP] = SDLK_UP;
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92 keymap[SCANCODE_DOWN] = SDLK_DOWN;
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93 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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94 keymap[SCANCODE_LEFT] = SDLK_LEFT;
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95
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96 /* Special keys */
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97 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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98 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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99 keymap[SCANCODE_TAB] = SDLK_TAB;
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100 keymap[SCANCODE_ENTER] = SDLK_RETURN;
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101 keymap[SCANCODE_DELETE] = SDLK_DELETE;
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102 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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103 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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104 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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105 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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106 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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107
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108 use_dev_mouse = (SDL_AtariDevMouse_Open() != 0) ? SDL_TRUE : SDL_FALSE;
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109
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110 vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS; /* XBIOS joystick events */
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111 if (!use_dev_mouse) {
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112 vectors_mask |= ATARI_XBIOS_MOUSEEVENTS; /* XBIOS mouse events */
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113 }
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114 if (Getcookie(C_MiNT, &dummy) == C_FOUND) {
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115 vectors_mask = 0;
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116 }
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117
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118 SDL_AtariXbios_InstallVectors(vectors_mask);
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119 }
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120
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121 void
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122 AtariBios_PumpEvents(_THIS)
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123 {
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124 int i;
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125 SDL_keysym keysym;
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126
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127 /* Update pressed keys */
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128 SDL_memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
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129
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130 while (Bconstat(_CON)) {
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131 unsigned long key_pressed;
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132 unsigned char asciicode, scancode;
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133
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134 key_pressed = Bconin(_CON);
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135
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136 asciicode = key_pressed;
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137 scancode = key_pressed >> 16;
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138
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139 bios_currentkeyboard[scancode] = 0xFF;
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140 bios_currentascii[scancode] = asciicode;
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141 }
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142
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143 /* Read special keys */
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144 UpdateSpecialKeys(Kbshift(-1));
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145
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146 /* Now generate events */
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147 for (i = 0; i < ATARIBIOS_MAXKEYS; i++) {
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148 /* Key pressed ? */
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149 if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
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150 SDL_PrivateKeyboard(SDL_PRESSED,
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151 TranslateKey(i, bios_currentascii[i],
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152 &keysym, SDL_TRUE));
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153
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154 /* Key unpressed ? */
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155 if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
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156 SDL_PrivateKeyboard(SDL_RELEASED,
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157 TranslateKey(i, bios_currentascii[i],
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158 &keysym, SDL_FALSE));
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159 }
281
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160
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161 if (use_dev_mouse) {
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162 SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
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163 } else {
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164 SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
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165 }
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166
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167 /* Will be previous table */
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168 SDL_memcpy(bios_previouskeyboard, bios_currentkeyboard,
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169 ATARIBIOS_MAXKEYS);
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170 }
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171
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172 static void
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173 UpdateSpecialKeys(int special_keys_state)
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174 {
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175 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
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176 { \
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177 if (special_keys_state & (1<<(numbit))) { \
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178 bios_currentkeyboard[scancode]=0xFF; \
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179 bios_currentascii[scancode]=0; \
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180 } \
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181 }
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182
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183 UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
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184 UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
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185 UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
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186 UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
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187 UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
281
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188 }
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189
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190 static SDL_keysym *
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191 TranslateKey(int scancode, int asciicode, SDL_keysym * keysym,
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192 SDL_bool pressed)
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193 {
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194 /* Set the keysym information */
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195 keysym->scancode = scancode;
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196
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197 if (asciicode)
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198 keysym->sym = asciicode;
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199 else
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200 keysym->sym = keymap[scancode];
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201
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202 keysym->mod = KMOD_NONE;
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203 keysym->unicode = 0;
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204 if (SDL_TranslateUNICODE && pressed) {
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205 keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
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206 }
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207
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208 return (keysym);
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209 }
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210
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211 void
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212 AtariBios_ShutdownEvents(void)
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213 {
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214 SDL_AtariXbios_RestoreVectors();
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215 if (use_dev_mouse) {
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216 SDL_AtariDevMouse_Close();
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217 }
281
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218 }
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219
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220 /* vi: set ts=4 sw=4 expandtab: */