ui/events/keycodes/dom4/keycode_converter.cc

   1 // Copyright 2013 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/dom4/keycode_converter.h"
   6
   7 #include "ui/events/keycodes/dom3/dom_code.h"
   8 #include "ui/events/keycodes/dom3/dom_key.h"
   9
  10 namespace ui {
  11
  12 namespace {
  13
  14 // Table of USB codes (equivalent to DomCode values), native scan codes,
  15 // and DOM Level 3 |code| strings.
  16 #if defined(OS_WIN)
  17 #define USB_KEYMAP(usb, xkb, win, mac, code, id) {usb, win, code}
  18 #elif defined(OS_LINUX)
  19 #define USB_KEYMAP(usb, xkb, win, mac, code, id) {usb, xkb, code}
  20 #elif defined(OS_MACOSX)
  21 #define USB_KEYMAP(usb, xkb, win, mac, code, id) {usb, mac, code}
  22 #else
  23 #define USB_KEYMAP(usb, xkb, win, mac, code, id) {usb, 0, code}
  24 #endif
  25 #define USB_KEYMAP_DECLARATION const KeycodeMapEntry usb_keycode_map[] =
  26 #include "ui/events/keycodes/dom4/keycode_converter_data.h"
  27 #undef USB_KEYMAP
  28 #undef USB_KEYMAP_DECLARATION
  29
  30 const size_t kKeycodeMapEntries = arraysize(usb_keycode_map);
  31
  32 // Table of DomKey enum values and DOM Level 3 |key| strings.
  33 struct DomKeyMapEntry {
  34   DomKey dom_key;
  35   const char* string;
  36 };
  37
  38 #define DOM_KEY_MAP(key, id) {DomKey::id, key}
  39 #define DOM_KEY_MAP_DECLARATION const DomKeyMapEntry dom_key_map[] =
  40 #include "ui/events/keycodes/dom3/dom_key_data.h"
  41 #undef DOM_KEY_MAP
  42 #undef DOM_KEY_MAP_DECLARATION
  43
  44 const size_t kDomKeyMapEntries = arraysize(dom_key_map);
  45
  46 }  // namespace
  47
  48 // static
  49 size_t KeycodeConverter::NumKeycodeMapEntriesForTest() {
  50   return kKeycodeMapEntries;
  51 }
  52
  53 // static
  54 const KeycodeMapEntry* KeycodeConverter::GetKeycodeMapForTest() {
  55   return &usb_keycode_map[0];
  56 }
  57
  58 // static
  59 const char* KeycodeConverter::DomKeyStringForTest(size_t index) {
  60   if (index >= kDomKeyMapEntries)
  61     return nullptr;
  62   return dom_key_map[index].string;
  63 }
  64
  65 // static
  66 int KeycodeConverter::InvalidNativeKeycode() {
  67   return usb_keycode_map[0].native_keycode;
  68 }
  69
  70 // static
  71 const char* KeycodeConverter::NativeKeycodeToCode(int native_keycode) {
  72   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
  73     if (usb_keycode_map[i].native_keycode == native_keycode) {
  74       if (usb_keycode_map[i].code != NULL)
  75         return usb_keycode_map[i].code;
  76       break;
  77     }
  78   }
  79   return "";
  80 }
  81
  82 // static
  83 DomCode KeycodeConverter::NativeKeycodeToDomCode(int native_keycode) {
  84   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
  85     if (usb_keycode_map[i].native_keycode == native_keycode) {
  86       if (usb_keycode_map[i].code != NULL)
  87         return static_cast<DomCode>(usb_keycode_map[i].usb_keycode);
  88       break;
  89     }
  90   }
  91   return DomCode::NONE;
  92 }
  93
  94 // static
  95 int KeycodeConverter::CodeToNativeKeycode(const char* code) {
  96   if (!code || !*code)
  97     return InvalidNativeKeycode();
  98
  99   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
 100     if (usb_keycode_map[i].code &&
 101         strcmp(usb_keycode_map[i].code, code) == 0) {
 102       return usb_keycode_map[i].native_keycode;
 103     }
 104   }
 105   return InvalidNativeKeycode();
 106 }
 107
 108 // static
 109 int KeycodeConverter::DomCodeToNativeKeycode(DomCode code) {
 110   if (code == DomCode::NONE)
 111     return InvalidNativeKeycode();
 112   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
 113     if (usb_keycode_map[i].usb_keycode == static_cast<uint32_t>(code))
 114       return usb_keycode_map[i].native_keycode;
 115   }
 116   return InvalidNativeKeycode();
 117 }
 118
 119 // static
 120 DomCode KeycodeConverter::CodeStringToDomCode(const char* code) {
 121   if (!code || !*code)
 122     return DomCode::NONE;
 123   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
 124     if (usb_keycode_map[i].code &&
 125         strcmp(usb_keycode_map[i].code, code) == 0) {
 126       return static_cast<DomCode>(usb_keycode_map[i].usb_keycode);
 127     }
 128   }
 129   return DomCode::NONE;
 130 }
 131
 132 // static
 133 const char* KeycodeConverter::DomCodeToCodeString(DomCode dom_code) {
 134   return UsbKeycodeToCode(static_cast<uint32_t>(dom_code));
 135 }
 136
 137 // static
 138 DomKey KeycodeConverter::KeyStringToDomKey(const char* key) {
 139   if (!key || !*key)
 140     return DomKey::NONE;
 141   for (size_t i = 0; i < kDomKeyMapEntries; ++i) {
 142     if (dom_key_map[i].string &&
 143         strcmp(dom_key_map[i].string, key) == 0) {
 144       return dom_key_map[i].dom_key;
 145     }
 146   }
 147   return DomKey::NONE;
 148 }
 149
 150 // static
 151 const char* KeycodeConverter::DomKeyToKeyString(DomKey dom_key) {
 152   for (size_t i = 0; i < kDomKeyMapEntries; ++i) {
 153     if (dom_key_map[i].dom_key == dom_key)
 154       return dom_key_map[i].string;
 155   }
 156   return "";
 157 }
 158
 159 // USB keycodes
 160 // Note that USB keycodes are not part of any web standard.
 161 // Please don't use USB keycodes in new code.
 162
 163 // static
 164 uint32_t KeycodeConverter::InvalidUsbKeycode() {
 165   return usb_keycode_map[0].usb_keycode;
 166 }
 167
 168 // static
 169 int KeycodeConverter::UsbKeycodeToNativeKeycode(uint32_t usb_keycode) {
 170   // Deal with some special-cases that don't fit the 1:1 mapping.
 171   if (usb_keycode == 0x070032) // non-US hash.
 172     usb_keycode = 0x070031; // US backslash.
 173 #if defined(OS_MACOSX)
 174   if (usb_keycode == 0x070046) // PrintScreen.
 175     usb_keycode = 0x070068; // F13.
 176 #endif
 177
 178   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
 179     if (usb_keycode_map[i].usb_keycode == usb_keycode)
 180       return usb_keycode_map[i].native_keycode;
 181   }
 182   return InvalidNativeKeycode();
 183 }
 184
 185 // static
 186 uint32_t KeycodeConverter::NativeKeycodeToUsbKeycode(int native_keycode) {
 187   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
 188     if (usb_keycode_map[i].native_keycode == native_keycode)
 189       return usb_keycode_map[i].usb_keycode;
 190   }
 191   return InvalidUsbKeycode();
 192 }
 193
 194 // static
 195 const char* KeycodeConverter::UsbKeycodeToCode(uint32_t usb_keycode) {
 196   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
 197     if (usb_keycode_map[i].usb_keycode == usb_keycode) {
 198       if (usb_keycode_map[i].code)
 199         return usb_keycode_map[i].code;
 200       break;
 201     }
 202   }
 203   return "";
 204 }
 205
 206 // static
 207 uint32_t KeycodeConverter::CodeToUsbKeycode(const char* code) {
 208   if (!code || !*code)
 209     return InvalidUsbKeycode();
 210
 211   for (size_t i = 0; i < kKeycodeMapEntries; ++i) {
 212     if (usb_keycode_map[i].code &&
 213         strcmp(usb_keycode_map[i].code, code) == 0) {
 214       return usb_keycode_map[i].usb_keycode;
 215     }
 216   }
 217   return InvalidUsbKeycode();
 218 }
 219
 220 }  // namespace ui