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1 /* |
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2 * QEMU keysym to keycode conversion using rdesktop keymaps |
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3 * |
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4 * Copyright (c) 2004 Johannes Schindelin |
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5 * |
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6 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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7 * of this software and associated documentation files (the "Software"), to deal |
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8 * in the Software without restriction, including without limitation the rights |
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9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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10 * copies of the Software, and to permit persons to whom the Software is |
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11 * furnished to do so, subject to the following conditions: |
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12 * |
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13 * The above copyright notice and this permission notice shall be included in |
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14 * all copies or substantial portions of the Software. |
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15 * |
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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22 * THE SOFTWARE. |
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23 */ |
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24 |
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25 static int get_keysym(const char *name) |
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26 { |
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27 const name2keysym_t *p; |
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28 for(p = name2keysym; p->name != NULL; p++) { |
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29 if (!strcmp(p->name, name)) |
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30 return p->keysym; |
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31 } |
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32 return 0; |
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33 } |
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34 |
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35 struct key_range { |
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36 int start; |
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37 int end; |
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38 struct key_range *next; |
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39 }; |
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40 |
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41 #define MAX_NORMAL_KEYCODE 512 |
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42 #define MAX_EXTRA_COUNT 256 |
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43 typedef struct { |
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44 uint16_t keysym2keycode[MAX_NORMAL_KEYCODE]; |
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45 struct { |
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46 int keysym; |
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47 uint16_t keycode; |
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48 } keysym2keycode_extra[MAX_EXTRA_COUNT]; |
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49 int extra_count; |
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50 struct key_range *keypad_range; |
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51 struct key_range *numlock_range; |
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52 } kbd_layout_t; |
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53 |
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54 static void add_to_key_range(struct key_range **krp, int code) { |
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55 struct key_range *kr; |
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56 for (kr = *krp; kr; kr = kr->next) { |
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57 if (code >= kr->start && code <= kr->end) |
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58 break; |
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59 if (code == kr->start - 1) { |
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60 kr->start--; |
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61 break; |
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62 } |
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63 if (code == kr->end + 1) { |
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64 kr->end++; |
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65 break; |
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66 } |
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67 } |
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68 if (kr == NULL) { |
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69 kr = qemu_mallocz(sizeof(*kr)); |
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70 if (kr) { |
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71 kr->start = kr->end = code; |
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72 kr->next = *krp; |
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73 *krp = kr; |
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74 } |
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75 } |
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76 } |
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77 |
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78 static kbd_layout_t *parse_keyboard_layout(const char *language, |
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79 kbd_layout_t * k) |
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80 { |
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81 FILE *f; |
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82 char file_name[1024]; |
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83 char line[1024]; |
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84 int len; |
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85 |
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86 snprintf(file_name, sizeof(file_name), |
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87 "%s/keymaps/%s", bios_dir, language); |
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88 |
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89 if (!k) |
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90 k = qemu_mallocz(sizeof(kbd_layout_t)); |
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91 if (!k) |
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92 return 0; |
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93 if (!(f = fopen(file_name, "r"))) { |
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94 fprintf(stderr, |
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95 "Could not read keymap file: '%s'\n", file_name); |
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96 return 0; |
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97 } |
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98 for(;;) { |
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99 if (fgets(line, 1024, f) == NULL) |
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100 break; |
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101 len = strlen(line); |
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102 if (len > 0 && line[len - 1] == '\n') |
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103 line[len - 1] = '\0'; |
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104 if (line[0] == '#') |
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105 continue; |
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106 if (!strncmp(line, "map ", 4)) |
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107 continue; |
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108 if (!strncmp(line, "include ", 8)) { |
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109 parse_keyboard_layout(line + 8, k); |
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110 } else { |
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111 char *end_of_keysym = line; |
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112 while (*end_of_keysym != 0 && *end_of_keysym != ' ') |
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113 end_of_keysym++; |
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114 if (*end_of_keysym) { |
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115 int keysym; |
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116 *end_of_keysym = 0; |
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117 keysym = get_keysym(line); |
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118 if (keysym == 0) { |
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119 // fprintf(stderr, "Warning: unknown keysym %s\n", line); |
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120 } else { |
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121 const char *rest = end_of_keysym + 1; |
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122 char *rest2; |
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123 int keycode = strtol(rest, &rest2, 0); |
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124 |
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125 if (rest && strstr(rest, "numlock")) { |
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126 add_to_key_range(&k->keypad_range, keycode); |
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127 add_to_key_range(&k->numlock_range, keysym); |
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128 //fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode); |
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129 } |
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130 |
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131 /* if(keycode&0x80) |
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132 keycode=(keycode<<8)^0x80e0; */ |
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133 if (keysym < MAX_NORMAL_KEYCODE) { |
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134 //fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode); |
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135 k->keysym2keycode[keysym] = keycode; |
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136 } else { |
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137 if (k->extra_count >= MAX_EXTRA_COUNT) { |
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138 fprintf(stderr, |
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139 "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n", |
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140 line, keysym); |
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141 } else { |
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142 #if 0 |
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143 fprintf(stderr, "Setting %d: %d,%d\n", |
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144 k->extra_count, keysym, keycode); |
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145 #endif |
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146 k->keysym2keycode_extra[k->extra_count]. |
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147 keysym = keysym; |
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148 k->keysym2keycode_extra[k->extra_count]. |
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149 keycode = keycode; |
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150 k->extra_count++; |
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151 } |
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152 } |
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153 } |
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154 } |
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155 } |
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156 } |
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157 fclose(f); |
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158 return k; |
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159 } |
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160 |
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161 static void *init_keyboard_layout(const char *language) |
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162 { |
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163 return parse_keyboard_layout(language, 0); |
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164 } |
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165 |
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166 static int keysym2scancode(void *kbd_layout, int keysym) |
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167 { |
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168 kbd_layout_t *k = kbd_layout; |
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169 if (keysym < MAX_NORMAL_KEYCODE) { |
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170 if (k->keysym2keycode[keysym] == 0) |
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171 fprintf(stderr, "Warning: no scancode found for keysym %d\n", |
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172 keysym); |
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173 return k->keysym2keycode[keysym]; |
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174 } else { |
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175 int i; |
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176 #ifdef XK_ISO_Left_Tab |
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177 if (keysym == XK_ISO_Left_Tab) |
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178 keysym = XK_Tab; |
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179 #endif |
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180 for (i = 0; i < k->extra_count; i++) |
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181 if (k->keysym2keycode_extra[i].keysym == keysym) |
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182 return k->keysym2keycode_extra[i].keycode; |
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183 } |
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184 return 0; |
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185 } |
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186 |
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187 static inline int keycode_is_keypad(void *kbd_layout, int keycode) |
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188 { |
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189 kbd_layout_t *k = kbd_layout; |
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190 struct key_range *kr; |
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191 |
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192 for (kr = k->keypad_range; kr; kr = kr->next) |
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193 if (keycode >= kr->start && keycode <= kr->end) |
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194 return 1; |
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195 return 0; |
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196 } |
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197 |
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198 static inline int keysym_is_numlock(void *kbd_layout, int keysym) |
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199 { |
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200 kbd_layout_t *k = kbd_layout; |
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201 struct key_range *kr; |
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202 |
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203 for (kr = k->numlock_range; kr; kr = kr->next) |
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204 if (keysym >= kr->start && keysym <= kr->end) |
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205 return 1; |
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206 return 0; |
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207 } |