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annotate src/video/ataricommon/SDL_ikbdevents.c @ 1460:d79e6b0c2c19

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author Sam Lantinga <slouken@libsdl.org>
date Thu, 02 Mar 2006 07:46:24 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb f1816773a309
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 hardware IKBD
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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
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33 #include "../../events/SDL_sysevents.h"
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34 #include "../../events/SDL_events_c.h"
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35
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36 #include "SDL_atarikeys.h"
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37 #include "SDL_atarievents_c.h"
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38 #include "SDL_ikbdinterrupt_s.h"
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39
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40 /* Special keys state */
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41 enum {
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42 K_RSHIFT=0,
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43 K_LSHIFT,
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44 K_CTRL,
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45 K_ALT,
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46 K_CAPSLOCK,
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47 K_CLRHOME,
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48 K_INSERT
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49 };
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50
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51 #define ATARIBIOS_MAXKEYS 128
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52
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53 #define KEY_PRESSED 0xff
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54 #define KEY_UNDEFINED 0x80
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55 #define KEY_RELEASED 0x00
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56
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57 /* The translation tables from a console scancode to a SDL keysym */
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58 #define KT_NOCHANGE -1
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59
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60 enum {
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61 KT_UNSHIFT=0,
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62 KT_SHIFT=1,
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63 KT_CAPS=2
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64 };
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65
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66 static Uint16 atari_prevmouseb; /* save state of mouse buttons */
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67 static int caps_state; /* caps lock state */
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68 _KEYTAB *curtables;
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69 static unsigned char *tab_unshift, *tab_shift, *tab_caps;
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70 static SDLKey keymap[ATARIBIOS_MAXKEYS];
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71
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72 static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym,
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73 SDL_bool pressed);
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74
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75 void AtariIkbd_InitOSKeymap(_THIS)
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76 {
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77 int i;
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78
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79 SDL_memset(SDL_AtariIkbd_keyboard, KEY_UNDEFINED, ATARIBIOS_MAXKEYS);
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80
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81 /* Initialize keymap */
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82 for ( i=0; i<sizeof(keymap); i++ )
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83 keymap[i] = SDLK_UNKNOWN;
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84
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85 /* Functions keys */
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86 for ( i = 0; i<10; i++ )
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87 keymap[SCANCODE_F1 + i] = SDLK_F1+i;
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88
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89 /* Cursor keypad */
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90 keymap[SCANCODE_HELP] = SDLK_HELP;
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91 keymap[SCANCODE_UNDO] = SDLK_UNDO;
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92 keymap[SCANCODE_INSERT] = SDLK_INSERT;
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93 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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94 keymap[SCANCODE_UP] = SDLK_UP;
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95 keymap[SCANCODE_DOWN] = SDLK_DOWN;
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96 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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97 keymap[SCANCODE_LEFT] = SDLK_LEFT;
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98
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99 /* Special keys */
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100 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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101 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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102 keymap[SCANCODE_TAB] = SDLK_TAB;
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103 keymap[SCANCODE_ENTER] = SDLK_RETURN;
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104 keymap[SCANCODE_DELETE] = SDLK_DELETE;
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105 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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106 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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107 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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108 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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109 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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110
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111 /* Read XBIOS tables for scancode -> ascii translation */
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112 curtables=Keytbl(KT_NOCHANGE, KT_NOCHANGE, KT_NOCHANGE);
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113 tab_unshift=curtables->unshift;
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114 tab_shift=curtables->shift;
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115 tab_caps=curtables->caps;
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116
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117 /* Set Caps lock initial state */
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118 caps_state=(Kbshift(-1) & (1<<K_CAPSLOCK));
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119
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120 /* Now install our handler */
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121 SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
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122 atari_prevmouseb = 0;
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123
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124 Supexec(SDL_AtariIkbdInstall);
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125 }
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126
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127 static int atari_GetButton(int button)
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128 {
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129 switch(button)
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130 {
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131 case 0:
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132 return SDL_BUTTON_RIGHT;
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133 break;
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134 case 1:
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135 default:
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136 return SDL_BUTTON_LEFT;
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137 break;
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138 }
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139 }
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140
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141 void AtariIkbd_PumpEvents(_THIS)
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142 {
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143 int i;
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144 SDL_keysym keysym;
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145 int specialkeys;
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146
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147 /*--- Send keyboard events ---*/
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148
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149 /* Update caps lock state */
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150 if (SDL_AtariIkbd_keyboard[SCANCODE_CAPSLOCK]==KEY_PRESSED) {
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151 caps_state ^= 1;
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152 }
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153
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154 /* Choose the translation table */
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155 specialkeys=KT_UNSHIFT;
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156 if ((SDL_AtariIkbd_keyboard[SCANCODE_LEFTSHIFT]==KEY_PRESSED)
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157 || (SDL_AtariIkbd_keyboard[SCANCODE_RIGHTSHIFT]==KEY_PRESSED))
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158 {
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159 specialkeys = KT_SHIFT;
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160 }
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161 if (caps_state) {
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162 specialkeys = KT_CAPS;
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163 }
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164
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165 /* Now generate events */
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166 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
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167 /* Key pressed ? */
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168 if (SDL_AtariIkbd_keyboard[i]==KEY_PRESSED) {
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169 SDL_PrivateKeyboard(SDL_PRESSED,
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170 TranslateKey(i, specialkeys, &keysym, SDL_TRUE));
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171 SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED;
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172 }
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173
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174 /* Key released ? */
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175 if (SDL_AtariIkbd_keyboard[i]==KEY_RELEASED) {
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176 SDL_PrivateKeyboard(SDL_RELEASED,
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177 TranslateKey(i, specialkeys, &keysym, SDL_FALSE));
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178 SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED;
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179 }
281
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180 }
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181
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182 /*--- Send mouse events ---*/
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183
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184 /* Mouse motion ? */
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185 if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) {
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186 SDL_PrivateMouseMotion(0, 1, SDL_AtariIkbd_mousex, SDL_AtariIkbd_mousey);
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187 SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
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188 }
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189
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190 /* Mouse button ? */
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191 if (SDL_AtariIkbd_mouseb != atari_prevmouseb) {
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192 for (i=0;i<2;i++) {
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193 int curbutton, prevbutton;
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194
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195 curbutton = SDL_AtariIkbd_mouseb & (1<<i);
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196 prevbutton = atari_prevmouseb & (1<<i);
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197
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198 if (curbutton && !prevbutton) {
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199 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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200 }
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201 if (!curbutton && prevbutton) {
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202 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
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203 }
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204 }
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205 atari_prevmouseb = SDL_AtariIkbd_mouseb;
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206 }
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207 }
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208
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209 static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym,
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210 SDL_bool pressed)
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211 {
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212 unsigned char asciicode;
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213
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214 /* Set the keysym information */
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215 keysym->scancode = scancode;
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216
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217 asciicode=0;
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218 switch(numkeytable) {
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219 case KT_UNSHIFT:
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220 asciicode=tab_unshift[scancode];
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221 break;
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222 case KT_SHIFT:
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223 asciicode=tab_shift[scancode];
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224 break;
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225 case KT_CAPS:
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226 asciicode=tab_caps[scancode];
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227 break;
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228 }
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229
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230 if (asciicode)
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231 keysym->sym = asciicode;
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232 else
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233 keysym->sym = keymap[scancode];
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234
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235 keysym->mod = KMOD_NONE;
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236 keysym->unicode = 0;
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237 if (SDL_TranslateUNICODE && pressed) {
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238 keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
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239 }
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240
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241 return(keysym);
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242 }
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243
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244 void AtariIkbd_ShutdownEvents(void)
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245 {
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246 Supexec(SDL_AtariIkbdUninstall);
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247 }