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annotate src/video/ataricommon/SDL_ikbdevents.c @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents d910939febfa
children 4da1ee79c9af
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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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 {
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43 K_RSHIFT = 0,
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44 K_LSHIFT,
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45 K_CTRL,
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46 K_ALT,
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47 K_CAPSLOCK,
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48 K_CLRHOME,
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49 K_INSERT
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50 };
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51
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52 #define ATARIBIOS_MAXKEYS 128
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53
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54 #define KEY_PRESSED 0xff
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55 #define KEY_UNDEFINED 0x80
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56 #define KEY_RELEASED 0x00
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57
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58 /* The translation tables from a console scancode to a SDL keysym */
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59 #define KT_NOCHANGE -1
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60
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61 enum
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62 {
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63 KT_UNSHIFT = 0,
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64 KT_SHIFT = 1,
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65 KT_CAPS = 2
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66 };
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67
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68 static Uint16 atari_prevmouseb; /* save state of mouse buttons */
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69 static int caps_state; /* caps lock state */
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70 _KEYTAB *curtables;
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71 static unsigned char *tab_unshift, *tab_shift, *tab_caps;
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72 static SDLKey keymap[ATARIBIOS_MAXKEYS];
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74 static SDL_keysym *TranslateKey (int scancode, int numkeytable,
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75 SDL_keysym * keysym, SDL_bool pressed);
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76
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77 void
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78 AtariIkbd_InitOSKeymap (_THIS)
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79 {
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80 int i;
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81
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82 SDL_memset (SDL_AtariIkbd_keyboard, KEY_UNDEFINED, ATARIBIOS_MAXKEYS);
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83
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84 /* Initialize keymap */
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85 for (i = 0; i < sizeof (keymap); i++)
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86 keymap[i] = SDLK_UNKNOWN;
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87
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88 /* Functions keys */
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89 for (i = 0; i < 10; i++)
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90 keymap[SCANCODE_F1 + i] = SDLK_F1 + i;
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91
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92 /* Cursor keypad */
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93 keymap[SCANCODE_HELP] = SDLK_HELP;
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94 keymap[SCANCODE_UNDO] = SDLK_UNDO;
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95 keymap[SCANCODE_INSERT] = SDLK_INSERT;
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96 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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97 keymap[SCANCODE_UP] = SDLK_UP;
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98 keymap[SCANCODE_DOWN] = SDLK_DOWN;
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99 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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100 keymap[SCANCODE_LEFT] = SDLK_LEFT;
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101
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102 /* Special keys */
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103 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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104 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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105 keymap[SCANCODE_TAB] = SDLK_TAB;
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106 keymap[SCANCODE_ENTER] = SDLK_RETURN;
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107 keymap[SCANCODE_DELETE] = SDLK_DELETE;
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108 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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109 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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110 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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111 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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112 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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113
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114 /* Read XBIOS tables for scancode -> ascii translation */
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115 curtables = Keytbl (KT_NOCHANGE, KT_NOCHANGE, KT_NOCHANGE);
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116 tab_unshift = curtables->unshift;
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117 tab_shift = curtables->shift;
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118 tab_caps = curtables->caps;
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119
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120 /* Set Caps lock initial state */
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121 caps_state = (Kbshift (-1) & (1 << K_CAPSLOCK));
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122
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123 /* Now install our handler */
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124 SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
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125 atari_prevmouseb = 0;
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126
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127 Supexec (SDL_AtariIkbdInstall);
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128 }
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129
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130 static int
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131 atari_GetButton (int button)
281
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132 {
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133 switch (button) {
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134 case 0:
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135 return SDL_BUTTON_RIGHT;
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136 break;
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137 case 1:
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138 default:
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139 return SDL_BUTTON_LEFT;
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140 break;
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141 }
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142 }
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143
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144 void
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145 AtariIkbd_PumpEvents (_THIS)
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146 {
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147 int i;
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148 SDL_keysym keysym;
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149 int specialkeys;
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150
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151 /*--- Send keyboard events ---*/
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152
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153 /* Update caps lock state */
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154 if (SDL_AtariIkbd_keyboard[SCANCODE_CAPSLOCK] == KEY_PRESSED) {
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155 caps_state ^= 1;
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156 }
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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] == KEY_PRESSED)
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161 || (SDL_AtariIkbd_keyboard[SCANCODE_RIGHTSHIFT] == KEY_PRESSED)) {
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162 specialkeys = KT_SHIFT;
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163 }
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164 if (caps_state) {
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165 specialkeys = KT_CAPS;
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166 }
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167
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168 /* Now generate events */
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169 for (i = 0; i < ATARIBIOS_MAXKEYS; i++) {
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170 /* Key pressed ? */
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171 if (SDL_AtariIkbd_keyboard[i] == KEY_PRESSED) {
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172 SDL_PrivateKeyboard (SDL_PRESSED,
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173 TranslateKey (i, specialkeys, &keysym,
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174 SDL_TRUE));
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175 SDL_AtariIkbd_keyboard[i] = KEY_UNDEFINED;
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176 }
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177
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178 /* Key released ? */
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179 if (SDL_AtariIkbd_keyboard[i] == KEY_RELEASED) {
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180 SDL_PrivateKeyboard (SDL_RELEASED,
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181 TranslateKey (i, specialkeys, &keysym,
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182 SDL_FALSE));
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183 SDL_AtariIkbd_keyboard[i] = KEY_UNDEFINED;
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184 }
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185 }
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186
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187 /*--- Send mouse events ---*/
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188
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189 /* Mouse motion ? */
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190 if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) {
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191 SDL_PrivateMouseMotion (0, 1, SDL_AtariIkbd_mousex,
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192 SDL_AtariIkbd_mousey);
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193 SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
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194 }
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195
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196 /* Mouse button ? */
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197 if (SDL_AtariIkbd_mouseb != atari_prevmouseb) {
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198 for (i = 0; i < 2; i++) {
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199 int curbutton, prevbutton;
281
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200
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201 curbutton = SDL_AtariIkbd_mouseb & (1 << i);
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202 prevbutton = atari_prevmouseb & (1 << i);
281
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203
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204 if (curbutton && !prevbutton) {
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205 SDL_PrivateMouseButton (SDL_PRESSED,
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206 atari_GetButton (i), 0, 0);
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207 }
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208 if (!curbutton && prevbutton) {
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209 SDL_PrivateMouseButton (SDL_RELEASED,
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210 atari_GetButton (i), 0, 0);
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211 }
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212 }
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213 atari_prevmouseb = SDL_AtariIkbd_mouseb;
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214 }
281
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215 }
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216
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217 static SDL_keysym *
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218 TranslateKey (int scancode, int numkeytable, SDL_keysym * keysym,
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219 SDL_bool pressed)
281
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220 {
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221 unsigned char asciicode;
281
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222
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223 /* Set the keysym information */
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224 keysym->scancode = scancode;
281
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225
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226 asciicode = 0;
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227 switch (numkeytable) {
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228 case KT_UNSHIFT:
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229 asciicode = tab_unshift[scancode];
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230 break;
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231 case KT_SHIFT:
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232 asciicode = tab_shift[scancode];
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233 break;
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234 case KT_CAPS:
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235 asciicode = tab_caps[scancode];
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236 break;
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237 }
281
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238
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239 if (asciicode)
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240 keysym->sym = asciicode;
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241 else
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242 keysym->sym = keymap[scancode];
281
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243
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244 keysym->mod = KMOD_NONE;
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245 keysym->unicode = 0;
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246 if (SDL_TranslateUNICODE && pressed) {
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247 keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
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248 }
281
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249
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250 return (keysym);
281
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251 }
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252
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253 void
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254 AtariIkbd_ShutdownEvents (void)
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255 {
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256 Supexec (SDL_AtariIkbdUninstall);
281
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257 }
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258
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259 /* vi: set ts=4 sw=4 expandtab: */