Mercurial > sdl-ios-xcode

annotate src/video/ataricommon/SDL_ikbdevents.c @ 1643:51038e80ae59

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More general fix for bug #189 The clipping is done at a higher level, and the low level functions are passed clipped rectangles. Drivers which don't support source clipping have not been changed, so the image will be squished instead of clipped, but at least they will no longer crash when the destination rect was out of bounds.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 17 Apr 2006 06:47:23 +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 }
281
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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) {
281
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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)
281
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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 }
281
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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 }