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annotate src/video/ataricommon/SDL_ikbdevents.c @ 1221:8ef3e7e92a91

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Use a simple table for Unicode translation
author Patrice Mandin <patmandin@gmail.com>
date Mon, 02 Jan 2006 19:49:21 +0000
parents a55ac374271c
children c9b51268668f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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_atarievents_c.h"
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45 #include "SDL_ikbdinterrupt_s.h"
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46
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47 /* Special keys state */
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48 enum {
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49 K_RSHIFT=0,
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50 K_LSHIFT,
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51 K_CTRL,
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52 K_ALT,
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53 K_CAPSLOCK,
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54 K_CLRHOME,
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55 K_INSERT
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56 };
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57
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58 #define ATARIBIOS_MAXKEYS 128
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59
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60 #define KEY_PRESSED 0xff
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61 #define KEY_UNDEFINED 0x80
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62 #define KEY_RELEASED 0x00
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63
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64 /* The translation tables from a console scancode to a SDL keysym */
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65 #define KT_NOCHANGE -1
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66
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67 enum {
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68 KT_UNSHIFT=0,
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69 KT_SHIFT=1,
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70 KT_CAPS=2
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71 };
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72
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73 static Uint16 atari_prevmouseb; /* save state of mouse buttons */
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74 static int caps_state; /* caps lock state */
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75 _KEYTAB *curtables;
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76 static unsigned char *tab_unshift, *tab_shift, *tab_caps;
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77 static SDLKey keymap[ATARIBIOS_MAXKEYS];
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78
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79 static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym,
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80 SDL_bool pressed);
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81
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82 void AtariIkbd_InitOSKeymap(_THIS)
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83 {
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84 int i;
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85
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86 memset(SDL_AtariIkbd_keyboard, KEY_UNDEFINED, ATARIBIOS_MAXKEYS);
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87
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88 /* Initialize keymap */
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89 for ( i=0; i<sizeof(keymap); i++ )
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90 keymap[i] = SDLK_UNKNOWN;
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91
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92 /* Functions keys */
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93 for ( i = 0; i<10; i++ )
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94 keymap[SCANCODE_F1 + i] = SDLK_F1+i;
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95
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96 /* Cursor keypad */
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97 keymap[SCANCODE_HELP] = SDLK_HELP;
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98 keymap[SCANCODE_UNDO] = SDLK_UNDO;
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99 keymap[SCANCODE_INSERT] = SDLK_INSERT;
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100 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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101 keymap[SCANCODE_UP] = SDLK_UP;
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102 keymap[SCANCODE_DOWN] = SDLK_DOWN;
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103 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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104 keymap[SCANCODE_LEFT] = SDLK_LEFT;
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105
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106 /* Special keys */
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107 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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108 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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109 keymap[SCANCODE_TAB] = SDLK_TAB;
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110 keymap[SCANCODE_ENTER] = SDLK_RETURN;
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111 keymap[SCANCODE_DELETE] = SDLK_DELETE;
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112 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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113 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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114 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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115 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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116 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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117
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118 /* Read XBIOS tables for scancode -> ascii translation */
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119 curtables=Keytbl(KT_NOCHANGE, KT_NOCHANGE, KT_NOCHANGE);
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120 tab_unshift=curtables->unshift;
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121 tab_shift=curtables->shift;
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122 tab_caps=curtables->caps;
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123
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124 /* Set Caps lock initial state */
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125 caps_state=(Kbshift(-1) & (1<<K_CAPSLOCK));
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126
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127 /* Now install our handler */
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128 SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
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129 atari_prevmouseb = 0;
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130
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131 Supexec(SDL_AtariIkbdInstall);
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132 }
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133
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134 static int atari_GetButton(int button)
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135 {
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136 switch(button)
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137 {
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138 case 0:
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139 return SDL_BUTTON_RIGHT;
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140 break;
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141 case 1:
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142 default:
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143 return SDL_BUTTON_LEFT;
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144 break;
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145 }
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146 }
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147
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148 void AtariIkbd_PumpEvents(_THIS)
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149 {
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150 int i;
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151 SDL_keysym keysym;
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152 int specialkeys;
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153
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154 /*--- Send keyboard events ---*/
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155
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156 /* Update caps lock state */
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157 if (SDL_AtariIkbd_keyboard[SCANCODE_CAPSLOCK]==KEY_PRESSED) {
281
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158 caps_state ^= 1;
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159 }
281
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160
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161 /* Choose the translation table */
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162 specialkeys=KT_UNSHIFT;
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163 if ((SDL_AtariIkbd_keyboard[SCANCODE_LEFTSHIFT]==KEY_PRESSED)
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164 || (SDL_AtariIkbd_keyboard[SCANCODE_RIGHTSHIFT]==KEY_PRESSED))
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165 {
281
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166 specialkeys = KT_SHIFT;
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167 }
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168 if (caps_state) {
281
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169 specialkeys = KT_CAPS;
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170 }
281
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171
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172 /* Now generate events */
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173 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
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174 /* Key pressed ? */
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175 if (SDL_AtariIkbd_keyboard[i]==KEY_PRESSED) {
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176 SDL_PrivateKeyboard(SDL_PRESSED,
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177 TranslateKey(i, specialkeys, &keysym, SDL_TRUE));
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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 /* Key released ? */
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182 if (SDL_AtariIkbd_keyboard[i]==KEY_RELEASED) {
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183 SDL_PrivateKeyboard(SDL_RELEASED,
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184 TranslateKey(i, specialkeys, &keysym, SDL_FALSE));
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185 SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED;
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186 }
281
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187 }
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188
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189 /*--- Send mouse events ---*/
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190
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191 /* Mouse motion ? */
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192 if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) {
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193 SDL_PrivateMouseMotion(0, 1, SDL_AtariIkbd_mousex, SDL_AtariIkbd_mousey);
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194 SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
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195 }
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196
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197 /* Mouse button ? */
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198 if (SDL_AtariIkbd_mouseb != atari_prevmouseb) {
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199 for (i=0;i<2;i++) {
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200 int curbutton, prevbutton;
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201
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202 curbutton = SDL_AtariIkbd_mouseb & (1<<i);
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203 prevbutton = atari_prevmouseb & (1<<i);
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204
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205 if (curbutton && !prevbutton) {
281
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206 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
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207 }
331
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diff changeset
208 if (!curbutton && prevbutton) {
281
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209 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
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210 }
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211 }
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212 atari_prevmouseb = SDL_AtariIkbd_mouseb;
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213 }
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214 }
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215
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216 static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym,
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217 SDL_bool pressed)
281
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218 {
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219 unsigned char asciicode;
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220
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221 /* Set the keysym information */
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222 keysym->scancode = scancode;
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223
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224 asciicode=0;
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225 switch(numkeytable) {
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226 case KT_UNSHIFT:
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227 asciicode=tab_unshift[scancode];
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228 break;
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229 case KT_SHIFT:
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230 asciicode=tab_shift[scancode];
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diff changeset
231 break;
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232 case KT_CAPS:
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233 asciicode=tab_caps[scancode];
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diff changeset
234 break;
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diff changeset
235 }
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236
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diff changeset
237 if (asciicode)
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238 keysym->sym = asciicode;
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239 else
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240 keysym->sym = keymap[scancode];
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241
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242 keysym->mod = KMOD_NONE;
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243 keysym->unicode = 0;
1221
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244 if (SDL_TranslateUNICODE && pressed) {
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diff changeset
245 keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
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246 }
281
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247
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248 return(keysym);
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249 }
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250
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251 void AtariIkbd_ShutdownEvents(void)
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252 {
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253 Supexec(SDL_AtariIkbdUninstall);
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254 }