1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "ui/events/keycodes/keyboard_code_conversion.h" 6 7 #include "ui/events/event_constants.h" 8 9 namespace ui { 10 GetCharacterFromKeyCode(KeyboardCode key_code,int flags)11uint16 GetCharacterFromKeyCode(KeyboardCode key_code, int flags) { 12 const bool ctrl = (flags & EF_CONTROL_DOWN) != 0; 13 const bool shift = (flags & EF_SHIFT_DOWN) != 0; 14 const bool upper = shift ^ ((flags & EF_CAPS_LOCK_DOWN) != 0); 15 16 // Following Windows behavior to map ctrl-a ~ ctrl-z to \x01 ~ \x1A. 17 if (key_code >= VKEY_A && key_code <= VKEY_Z) 18 return key_code - VKEY_A + (ctrl ? 1 : (upper ? 'A' : 'a')); 19 20 // Other ctrl characters 21 if (ctrl) { 22 if (shift) { 23 // following graphics chars require shift key to input. 24 switch (key_code) { 25 // ctrl-@ maps to \x00 (Null byte) 26 case VKEY_2: 27 return 0; 28 // ctrl-^ maps to \x1E (Record separator, Information separator two) 29 case VKEY_6: 30 return 0x1E; 31 // ctrl-_ maps to \x1F (Unit separator, Information separator one) 32 case VKEY_OEM_MINUS: 33 return 0x1F; 34 // Returns 0 for all other keys to avoid inputting unexpected chars. 35 default: 36 return 0; 37 } 38 } else { 39 switch (key_code) { 40 // ctrl-[ maps to \x1B (Escape) 41 case VKEY_OEM_4: 42 return 0x1B; 43 // ctrl-\ maps to \x1C (File separator, Information separator four) 44 case VKEY_OEM_5: 45 return 0x1C; 46 // ctrl-] maps to \x1D (Group separator, Information separator three) 47 case VKEY_OEM_6: 48 return 0x1D; 49 // ctrl-Enter maps to \x0A (Line feed) 50 case VKEY_RETURN: 51 return 0x0A; 52 // Returns 0 for all other keys to avoid inputting unexpected chars. 53 default: 54 return 0; 55 } 56 } 57 } 58 59 // For IME support. 60 if (key_code == ui::VKEY_PROCESSKEY) 61 return 0xE5; 62 63 // Normal characters 64 if (key_code >= VKEY_0 && key_code <= VKEY_9) { 65 return shift ? ")!@#$%^&*("[key_code - VKEY_0] : 66 static_cast<uint16>(key_code); 67 } else if (key_code >= VKEY_NUMPAD0 && key_code <= VKEY_NUMPAD9) { 68 return key_code - VKEY_NUMPAD0 + '0'; 69 } 70 71 switch (key_code) { 72 case VKEY_TAB: 73 return '\t'; 74 case VKEY_RETURN: 75 return '\r'; 76 case VKEY_MULTIPLY: 77 return '*'; 78 case VKEY_ADD: 79 return '+'; 80 case VKEY_SUBTRACT: 81 return '-'; 82 case VKEY_DECIMAL: 83 return '.'; 84 case VKEY_DIVIDE: 85 return '/'; 86 case VKEY_SPACE: 87 return ' '; 88 case VKEY_OEM_1: 89 return shift ? ':' : ';'; 90 case VKEY_OEM_PLUS: 91 return shift ? '+' : '='; 92 case VKEY_OEM_COMMA: 93 return shift ? '<' : ','; 94 case VKEY_OEM_MINUS: 95 return shift ? '_' : '-'; 96 case VKEY_OEM_PERIOD: 97 return shift ? '>' : '.'; 98 case VKEY_OEM_2: 99 return shift ? '?' : '/'; 100 case VKEY_OEM_3: 101 return shift ? '~' : '`'; 102 case VKEY_OEM_4: 103 return shift ? '{' : '['; 104 case VKEY_OEM_5: 105 return shift ? '|' : '\\'; 106 case VKEY_OEM_6: 107 return shift ? '}' : ']'; 108 case VKEY_OEM_7: 109 return shift ? '"' : '\''; 110 default: 111 return 0; 112 } 113 } 114 115 } // namespace ui 116