4e4f88127b
This unifies the software and hardware keyboard code under a single decision process that works. Bug: 8129303 Bug: 8152758 Change-Id: I7574c563d5f957d57bfe62fe5e3eec59a519d335
74 lines
3.5 KiB
Java
74 lines
3.5 KiB
Java
/*
|
|
* Copyright (C) 2012 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package com.android.inputmethod.event;
|
|
|
|
import android.view.KeyCharacterMap;
|
|
import android.view.KeyEvent;
|
|
|
|
import com.android.inputmethod.latin.Constants;
|
|
|
|
/**
|
|
* A hardware event decoder for a hardware qwerty-ish keyboard.
|
|
*
|
|
* The events are always hardware keypresses, but they can be key down or key up events, they
|
|
* can be dead keys, they can be meta keys like shift or ctrl... This does not deal with
|
|
* 10-key like keyboards; a different decoder is used for this.
|
|
*/
|
|
public class HardwareKeyboardEventDecoder implements HardwareEventDecoder {
|
|
final int mDeviceId;
|
|
|
|
public HardwareKeyboardEventDecoder(final int deviceId) {
|
|
mDeviceId = deviceId;
|
|
// TODO: get the layout for this hardware keyboard
|
|
}
|
|
|
|
@Override
|
|
public Event decodeHardwareKey(final KeyEvent keyEvent) {
|
|
// KeyEvent#getUnicodeChar() does not exactly returns a unicode char, but rather a value
|
|
// that includes both the unicode char in the lower 21 bits and flags in the upper bits,
|
|
// hence the name "codePointAndFlags". {@see KeyEvent#getUnicodeChar()} for more info.
|
|
final int codePointAndFlags = keyEvent.getUnicodeChar();
|
|
// The keyCode is the abstraction used by the KeyEvent to represent different keys that
|
|
// do not necessarily map to a unicode character. This represents a physical key, like
|
|
// the key for 'A' or Space, but also Backspace or Ctrl or Caps Lock.
|
|
final int keyCode = keyEvent.getKeyCode();
|
|
if (KeyEvent.KEYCODE_DEL == keyCode) {
|
|
return Event.createCommittableEvent(Constants.CODE_DELETE, null /* next */);
|
|
}
|
|
if (keyEvent.isPrintingKey() || KeyEvent.KEYCODE_SPACE == keyCode
|
|
|| KeyEvent.KEYCODE_ENTER == keyCode) {
|
|
if (0 != (codePointAndFlags & KeyCharacterMap.COMBINING_ACCENT)) {
|
|
// A dead key.
|
|
return Event.createDeadEvent(
|
|
codePointAndFlags & KeyCharacterMap.COMBINING_ACCENT_MASK, null /* next */);
|
|
}
|
|
if (KeyEvent.KEYCODE_ENTER == keyCode) {
|
|
// The Enter key. If the Shift key is not being pressed, this should send a
|
|
// CODE_ENTER to trigger the action if any, or a carriage return otherwise. If the
|
|
// Shift key is being pressed, this should send a CODE_SHIFT_ENTER and let
|
|
// Latin IME decide what to do with it.
|
|
return Event.createCommittableEvent(keyEvent.isShiftPressed()
|
|
? Constants.CODE_SHIFT_ENTER : Constants.CODE_ENTER,
|
|
null /* next */);
|
|
}
|
|
// If not Enter, then we have a committable character. This should be committed
|
|
// right away, taking into account the current state.
|
|
return Event.createCommittableEvent(codePointAndFlags, null /* next */);
|
|
}
|
|
return Event.createNotHandledEvent();
|
|
}
|
|
}
|