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| 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 #ifndef UI_EVENTS_KEYCODES_DOM4_KEYCODE_CONVERTER_H_ | |
| 6 #define UI_EVENTS_KEYCODES_DOM4_KEYCODE_CONVERTER_H_ | |
| 7 | |
| 8 #include <stdint.h> | |
| 9 #include "base/basictypes.h" | |
| 10 | |
| 11 // For reference, the W3C UI Event spec is located at: | |
| 12 // http://www.w3.org/TR/uievents/ | |
| 13 | |
| 14 namespace ui { | |
| 15 | |
| 16 // This structure is used to define the keycode mapping table. | |
| 17 // It is defined here because the unittests need access to it. | |
| 18 typedef struct { | |
| 19 // USB keycode: | |
| 20 // Upper 16-bits: USB Usage Page. | |
| 21 // Lower 16-bits: USB Usage Id: Assigned ID within this usage page. | |
| 22 uint32_t usb_keycode; | |
| 23 | |
| 24 // Contains one of the following: | |
| 25 // On Linux: XKB scancode | |
| 26 // On Windows: Windows OEM scancode | |
| 27 // On Mac: Mac keycode | |
| 28 uint16_t native_keycode; | |
| 29 | |
| 30 // The UIEvents (aka: DOM4Events) |code| value as defined in: | |
| 31 // https://dvcs.w3.org/hg/d4e/raw-file/tip/source_respec.htm | |
| 32 const char* code; | |
| 33 } KeycodeMapEntry; | |
| 34 | |
| 35 // A class to convert between the current platform's native keycode (scancode) | |
| 36 // and platform-neutral |code| values (as defined in the W3C UI Events | |
| 37 // spec (http://www.w3.org/TR/uievents/). | |
| 38 class KeycodeConverter { | |
| 39 public: | |
| 40 // Return the value that identifies an invalid native keycode. | |
| 41 static uint16_t InvalidNativeKeycode(); | |
| 42 | |
| 43 // Return the string that indentifies an invalid UI Event |code|. | |
| 44 // The returned pointer references a static global string. | |
| 45 static const char* InvalidKeyboardEventCode(); | |
| 46 | |
| 47 // Convert a native (Mac/Win/Linux) keycode into the |code| string. | |
| 48 // The returned pointer references a static global string. | |
| 49 static const char* NativeKeycodeToCode(uint16_t native_keycode); | |
| 50 | |
| 51 // Convert a UI Events |code| string value into a native keycode. | |
| 52 static uint16_t CodeToNativeKeycode(const char* code); | |
| 53 | |
| 54 // The following methods relate to USB keycodes. | |
| 55 // Note that USB keycodes are not part of any web standard. | |
| 56 // Please don't use USB keycodes in new code. | |
| 57 | |
| 58 // Return the value that identifies an invalid USB keycode. | |
| 59 static uint16_t InvalidUsbKeycode(); | |
| 60 | |
| 61 // Convert a USB keycode into an equivalent platform native keycode. | |
| 62 static uint16_t UsbKeycodeToNativeKeycode(uint32_t usb_keycode); | |
| 63 | |
| 64 // Convert a platform native keycode into an equivalent USB keycode. | |
| 65 static uint32_t NativeKeycodeToUsbKeycode(uint16_t native_keycode); | |
| 66 | |
| 67 // Convert a USB keycode into the string with the DOM3 |code| value. | |
| 68 // The returned pointer references a static global string. | |
| 69 static const char* UsbKeycodeToCode(uint32_t usb_keycode); | |
| 70 | |
| 71 // Convert a DOM3 Event |code| string into a USB keycode value. | |
| 72 static uint32_t CodeToUsbKeycode(const char* code); | |
| 73 | |
| 74 // Static methods to support testing. | |
| 75 static size_t NumKeycodeMapEntriesForTest(); | |
| 76 static const KeycodeMapEntry* GetKeycodeMapForTest(); | |
| 77 | |
| 78 private: | |
| 79 DISALLOW_COPY_AND_ASSIGN(KeycodeConverter); | |
| 80 }; | |
| 81 | |
| 82 } // namespace ui | |
| 83 | |
| 84 #endif // UI_EVENTS_KEYCODES_DOM4_KEYCODE_CONVERTER_H_ | |
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Chromium Code Reviews
Issue 1287103004:
Sync ui/events to chromium @ https://codereview.chromium.org/1210203002 (Closed)
Base URL: https://github.com/domokit/mojo.git@master