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annotate src/video/ataricommon/SDL_ikbdevents.c @ 281:c5010ab8ba35

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Added initial support for Atari (thanks Patrice!)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 17 Feb 2002 19:54:28 +0000
parents
children f6ffac90895c
rev   line source
281
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /*
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29 * Atari keyboard events manager, using hardware IKBD
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30 *
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31 * Patrice Mandin
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32 */
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33
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34 #include <string.h>
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35
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36 /* Mint includes */
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37 #include <mint/osbind.h>
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38
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39 #include "SDL.h"
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40 #include "SDL_sysevents.h"
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41 #include "SDL_events_c.h"
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42
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43 #include "SDL_atarikeys.h"
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44 #include "SDL_ikbdinterrupt_s.h"
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45
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46 /* Special keys state */
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47 enum {
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48 K_RSHIFT=0,
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49 K_LSHIFT,
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50 K_CTRL,
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51 K_ALT,
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52 K_CAPSLOCK,
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53 K_CLRHOME,
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54 K_INSERT
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55 };
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56
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57 /* To save state of keyboard */
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58 #define ATARIBIOS_MAXKEYS 128
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59
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60 static unsigned char ikbd_previouskeyboard[ATARIBIOS_MAXKEYS];
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61 static Uint16 atari_prevmouseb; /* buttons */
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62
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63 /* The translation tables from a console scancode to a SDL keysym */
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64 #define KT_NOCHANGE -1
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65
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66 enum {
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67 KT_UNSHIFT=0,
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68 KT_SHIFT=1,
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69 KT_CAPS=2
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70 };
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71
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72 static int caps_state;
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73 _KEYTAB *curtables;
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74 static unsigned char *tab_unshift, *tab_shift, *tab_caps;
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75 static SDLKey keymap[ATARIBIOS_MAXKEYS];
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76
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77 static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym);
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78
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79 void AtariIkbd_InitOSKeymap(_THIS)
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80 {
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81 int i;
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82
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83 memset(SDL_AtariIkbd_keyboard, 0, ATARIBIOS_MAXKEYS);
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84 memset(ikbd_previouskeyboard, 0, ATARIBIOS_MAXKEYS);
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85
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86 /* Initialize keymap */
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87 for ( i=0; i<sizeof(keymap); i++ )
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88 keymap[i] = SDLK_UNKNOWN;
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89
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90 /* Functions keys */
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91 for ( i = 0; i<10; i++ )
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92 keymap[SCANCODE_F1 + i] = SDLK_F1+i;
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93
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94 /* Cursor keypad */
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95 keymap[SCANCODE_HELP] = SDLK_HELP;
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96 keymap[SCANCODE_UNDO] = SDLK_UNDO;
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97 keymap[SCANCODE_INSERT] = SDLK_INSERT;
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98 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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99 keymap[SCANCODE_UP] = SDLK_UP;
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100 keymap[SCANCODE_DOWN] = SDLK_DOWN;
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101 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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102 keymap[SCANCODE_LEFT] = SDLK_LEFT;
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103
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104 /* Special keys */
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105 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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106 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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107 keymap[SCANCODE_TAB] = SDLK_TAB;
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108 keymap[SCANCODE_ENTER] = SDLK_RETURN;
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109 keymap[SCANCODE_DELETE] = SDLK_DELETE;
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110 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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111 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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112 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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113 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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114 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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115
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116 /* Read XBIOS tables for scancode -> ascii translation */
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117 curtables=Keytbl(KT_NOCHANGE, KT_NOCHANGE, KT_NOCHANGE);
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118 tab_unshift=curtables->unshift;
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119 tab_shift=curtables->shift;
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120 tab_caps=curtables->caps;
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121
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122 /* Set Caps lock initial state */
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123 caps_state=(Kbshift(-1) & (1<<K_CAPSLOCK));
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124
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125 /* Now install our handler */
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126 SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
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127 atari_prevmouseb = 0;
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128
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129 Supexec(SDL_AtariIkbdInstall);
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130 }
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131
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132 static int atari_GetButton(int button)
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133 {
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134 switch(button)
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135 {
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136 case 0:
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137 return SDL_BUTTON_RIGHT;
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138 break;
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139 case 1:
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140 default:
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141 return SDL_BUTTON_LEFT;
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142 break;
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143 }
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144 }
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145
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146 void AtariIkbd_PumpEvents(_THIS)
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147 {
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148 int i;
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149 SDL_keysym keysym;
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150 int specialkeys;
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151
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152 /*--- Send keyboard events ---*/
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153
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154 /* Update caps lock state */
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155 if (SDL_AtariIkbd_keyboard[SCANCODE_CAPSLOCK] && !ikbd_previouskeyboard[SCANCODE_CAPSLOCK])
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156 caps_state ^= 1;
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157
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158 /* Choose the translation table */
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159 specialkeys=KT_UNSHIFT;
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160 if (SDL_AtariIkbd_keyboard[SCANCODE_LEFTSHIFT] || SDL_AtariIkbd_keyboard[SCANCODE_RIGHTSHIFT])
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161 specialkeys = KT_SHIFT;
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162 if (caps_state)
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163 specialkeys = KT_CAPS;
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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] && !ikbd_previouskeyboard[i])
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169 SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, specialkeys, &keysym));
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170
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171 /* Key unpressed ? */
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172 if (ikbd_previouskeyboard[i] && !SDL_AtariIkbd_keyboard[i])
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173 SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, specialkeys, &keysym));
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174 }
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175
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176 /* Will be previous table */
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177 memcpy(ikbd_previouskeyboard, SDL_AtariIkbd_keyboard, ATARIBIOS_MAXKEYS);
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178
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179 /*--- Send mouse events ---*/
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180
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181 /* Mouse motion ? */
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182 if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) {
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183 SDL_PrivateMouseMotion(0, 1, SDL_AtariIkbd_mousex, SDL_AtariIkbd_mousey);
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184 SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
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185 }
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186
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187 /* Mouse button ? */
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188 if (SDL_AtariIkbd_mouseb != atari_prevmouseb) {
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189 for (i=0;i<2;i++) {
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190 int curbutton, prevbutton;
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191
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192 curbutton = SDL_AtariIkbd_mouseb & (1<<i);
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193 prevbutton = atari_prevmouseb & (1<<i);
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194
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195 if (curbutton & !prevbutton) {
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196 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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197 }
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198 if (!curbutton & prevbutton) {
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199 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
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200 }
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201 }
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202 atari_prevmouseb = SDL_AtariIkbd_mouseb;
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203 }
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204 }
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205
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206 static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym)
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207 {
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208 unsigned char asciicode;
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209
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210 /* Set the keysym information */
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211 keysym->scancode = scancode;
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212
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213 asciicode=0;
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214 switch(numkeytable) {
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215 case KT_UNSHIFT:
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216 asciicode=tab_unshift[scancode];
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217 break;
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218 case KT_SHIFT:
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219 asciicode=tab_shift[scancode];
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220 break;
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221 case KT_CAPS:
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222 asciicode=tab_caps[scancode];
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223 break;
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224 }
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225
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226 if (asciicode)
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227 keysym->sym = asciicode;
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228 else
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229 keysym->sym = keymap[scancode];
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230
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231 keysym->mod = KMOD_NONE;
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232 keysym->unicode = 0;
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233
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234 return(keysym);
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235 }
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236
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237 void AtariIkbd_ShutdownEvents(void)
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238 {
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239 Supexec(SDL_AtariIkbdUninstall);
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240 }
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241