302 lines
9.2 KiB
C++
302 lines
9.2 KiB
C++
/*
|
|
* Copyright (C) 2010 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.
|
|
*/
|
|
|
|
#define LOG_TAG "Keyboard"
|
|
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
|
|
#include <input/Keyboard.h>
|
|
#include <input/KeycodeLabels.h>
|
|
#include <input/KeyLayoutMap.h>
|
|
#include <input/KeyCharacterMap.h>
|
|
#include <input/InputDevice.h>
|
|
#include <utils/Errors.h>
|
|
#include <utils/Log.h>
|
|
|
|
namespace android {
|
|
|
|
// --- KeyMap ---
|
|
|
|
KeyMap::KeyMap() {
|
|
}
|
|
|
|
KeyMap::~KeyMap() {
|
|
}
|
|
|
|
status_t KeyMap::load(const InputDeviceIdentifier& deviceIdenfifier,
|
|
const PropertyMap* deviceConfiguration) {
|
|
// Use the configured key layout if available.
|
|
if (deviceConfiguration) {
|
|
String8 keyLayoutName;
|
|
if (deviceConfiguration->tryGetProperty(String8("keyboard.layout"),
|
|
keyLayoutName)) {
|
|
status_t status = loadKeyLayout(deviceIdenfifier, keyLayoutName);
|
|
if (status == NAME_NOT_FOUND) {
|
|
ALOGE("Configuration for keyboard device '%s' requested keyboard layout '%s' but "
|
|
"it was not found.",
|
|
deviceIdenfifier.name.string(), keyLayoutName.string());
|
|
}
|
|
}
|
|
|
|
String8 keyCharacterMapName;
|
|
if (deviceConfiguration->tryGetProperty(String8("keyboard.characterMap"),
|
|
keyCharacterMapName)) {
|
|
status_t status = loadKeyCharacterMap(deviceIdenfifier, keyCharacterMapName);
|
|
if (status == NAME_NOT_FOUND) {
|
|
ALOGE("Configuration for keyboard device '%s' requested keyboard character "
|
|
"map '%s' but it was not found.",
|
|
deviceIdenfifier.name.string(), keyLayoutName.string());
|
|
}
|
|
}
|
|
|
|
if (isComplete()) {
|
|
return OK;
|
|
}
|
|
}
|
|
|
|
// Try searching by device identifier.
|
|
if (probeKeyMap(deviceIdenfifier, String8::empty())) {
|
|
return OK;
|
|
}
|
|
|
|
// Fall back on the Generic key map.
|
|
// TODO Apply some additional heuristics here to figure out what kind of
|
|
// generic key map to use (US English, etc.) for typical external keyboards.
|
|
if (probeKeyMap(deviceIdenfifier, String8("Generic"))) {
|
|
return OK;
|
|
}
|
|
|
|
// Try the Virtual key map as a last resort.
|
|
if (probeKeyMap(deviceIdenfifier, String8("Virtual"))) {
|
|
return OK;
|
|
}
|
|
|
|
// Give up!
|
|
ALOGE("Could not determine key map for device '%s' and no default key maps were found!",
|
|
deviceIdenfifier.name.string());
|
|
return NAME_NOT_FOUND;
|
|
}
|
|
|
|
bool KeyMap::probeKeyMap(const InputDeviceIdentifier& deviceIdentifier,
|
|
const String8& keyMapName) {
|
|
if (!haveKeyLayout()) {
|
|
loadKeyLayout(deviceIdentifier, keyMapName);
|
|
}
|
|
if (!haveKeyCharacterMap()) {
|
|
loadKeyCharacterMap(deviceIdentifier, keyMapName);
|
|
}
|
|
return isComplete();
|
|
}
|
|
|
|
status_t KeyMap::loadKeyLayout(const InputDeviceIdentifier& deviceIdentifier,
|
|
const String8& name) {
|
|
String8 path(getPath(deviceIdentifier, name,
|
|
INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_LAYOUT));
|
|
if (path.isEmpty()) {
|
|
return NAME_NOT_FOUND;
|
|
}
|
|
|
|
status_t status = KeyLayoutMap::load(path, &keyLayoutMap);
|
|
if (status) {
|
|
return status;
|
|
}
|
|
|
|
keyLayoutFile.setTo(path);
|
|
return OK;
|
|
}
|
|
|
|
status_t KeyMap::loadKeyCharacterMap(const InputDeviceIdentifier& deviceIdentifier,
|
|
const String8& name) {
|
|
String8 path(getPath(deviceIdentifier, name,
|
|
INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_CHARACTER_MAP));
|
|
if (path.isEmpty()) {
|
|
return NAME_NOT_FOUND;
|
|
}
|
|
|
|
status_t status = KeyCharacterMap::load(path,
|
|
KeyCharacterMap::FORMAT_BASE, &keyCharacterMap);
|
|
if (status) {
|
|
return status;
|
|
}
|
|
|
|
keyCharacterMapFile.setTo(path);
|
|
return OK;
|
|
}
|
|
|
|
String8 KeyMap::getPath(const InputDeviceIdentifier& deviceIdentifier,
|
|
const String8& name, InputDeviceConfigurationFileType type) {
|
|
return name.isEmpty()
|
|
? getInputDeviceConfigurationFilePathByDeviceIdentifier(deviceIdentifier, type)
|
|
: getInputDeviceConfigurationFilePathByName(name, type);
|
|
}
|
|
|
|
|
|
// --- Global functions ---
|
|
|
|
bool isEligibleBuiltInKeyboard(const InputDeviceIdentifier& deviceIdentifier,
|
|
const PropertyMap* deviceConfiguration, const KeyMap* keyMap) {
|
|
if (!keyMap->haveKeyCharacterMap()
|
|
|| keyMap->keyCharacterMap->getKeyboardType()
|
|
== KeyCharacterMap::KEYBOARD_TYPE_SPECIAL_FUNCTION) {
|
|
return false;
|
|
}
|
|
|
|
if (deviceConfiguration) {
|
|
bool builtIn = false;
|
|
if (deviceConfiguration->tryGetProperty(String8("keyboard.builtIn"), builtIn)
|
|
&& builtIn) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return strstr(deviceIdentifier.name.string(), "-keypad");
|
|
}
|
|
|
|
static int lookupValueByLabel(const char* literal, const KeycodeLabel *list) {
|
|
while (list->literal) {
|
|
if (strcmp(literal, list->literal) == 0) {
|
|
return list->value;
|
|
}
|
|
list++;
|
|
}
|
|
return list->value;
|
|
}
|
|
|
|
static const char* lookupLabelByValue(int value, const KeycodeLabel *list) {
|
|
while (list->literal) {
|
|
if (list->value == value) {
|
|
return list->literal;
|
|
}
|
|
list++;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int32_t getKeyCodeByLabel(const char* label) {
|
|
return int32_t(lookupValueByLabel(label, KEYCODES));
|
|
}
|
|
|
|
uint32_t getKeyFlagByLabel(const char* label) {
|
|
return uint32_t(lookupValueByLabel(label, FLAGS));
|
|
}
|
|
|
|
int32_t getAxisByLabel(const char* label) {
|
|
return int32_t(lookupValueByLabel(label, AXES));
|
|
}
|
|
|
|
const char* getAxisLabel(int32_t axisId) {
|
|
return lookupLabelByValue(axisId, AXES);
|
|
}
|
|
|
|
int32_t getLedByLabel(const char* label) {
|
|
return int32_t(lookupValueByLabel(label, LEDS));
|
|
}
|
|
|
|
static int32_t setEphemeralMetaState(int32_t mask, bool down, int32_t oldMetaState) {
|
|
int32_t newMetaState;
|
|
if (down) {
|
|
newMetaState = oldMetaState | mask;
|
|
} else {
|
|
newMetaState = oldMetaState &
|
|
~(mask | AMETA_ALT_ON | AMETA_SHIFT_ON | AMETA_CTRL_ON | AMETA_META_ON);
|
|
}
|
|
|
|
if (newMetaState & (AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON)) {
|
|
newMetaState |= AMETA_ALT_ON;
|
|
}
|
|
|
|
if (newMetaState & (AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_RIGHT_ON)) {
|
|
newMetaState |= AMETA_SHIFT_ON;
|
|
}
|
|
|
|
if (newMetaState & (AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON)) {
|
|
newMetaState |= AMETA_CTRL_ON;
|
|
}
|
|
|
|
if (newMetaState & (AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON)) {
|
|
newMetaState |= AMETA_META_ON;
|
|
}
|
|
return newMetaState;
|
|
}
|
|
|
|
static int32_t toggleLockedMetaState(int32_t mask, bool down, int32_t oldMetaState) {
|
|
if (down) {
|
|
return oldMetaState;
|
|
} else {
|
|
return oldMetaState ^ mask;
|
|
}
|
|
}
|
|
|
|
int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState) {
|
|
int32_t mask;
|
|
switch (keyCode) {
|
|
case AKEYCODE_ALT_LEFT:
|
|
return setEphemeralMetaState(AMETA_ALT_LEFT_ON, down, oldMetaState);
|
|
case AKEYCODE_ALT_RIGHT:
|
|
return setEphemeralMetaState(AMETA_ALT_RIGHT_ON, down, oldMetaState);
|
|
case AKEYCODE_SHIFT_LEFT:
|
|
return setEphemeralMetaState(AMETA_SHIFT_LEFT_ON, down, oldMetaState);
|
|
case AKEYCODE_SHIFT_RIGHT:
|
|
return setEphemeralMetaState(AMETA_SHIFT_RIGHT_ON, down, oldMetaState);
|
|
case AKEYCODE_SYM:
|
|
return setEphemeralMetaState(AMETA_SYM_ON, down, oldMetaState);
|
|
case AKEYCODE_FUNCTION:
|
|
return setEphemeralMetaState(AMETA_FUNCTION_ON, down, oldMetaState);
|
|
case AKEYCODE_CTRL_LEFT:
|
|
return setEphemeralMetaState(AMETA_CTRL_LEFT_ON, down, oldMetaState);
|
|
case AKEYCODE_CTRL_RIGHT:
|
|
return setEphemeralMetaState(AMETA_CTRL_RIGHT_ON, down, oldMetaState);
|
|
case AKEYCODE_META_LEFT:
|
|
return setEphemeralMetaState(AMETA_META_LEFT_ON, down, oldMetaState);
|
|
case AKEYCODE_META_RIGHT:
|
|
return setEphemeralMetaState(AMETA_META_RIGHT_ON, down, oldMetaState);
|
|
case AKEYCODE_CAPS_LOCK:
|
|
return toggleLockedMetaState(AMETA_CAPS_LOCK_ON, down, oldMetaState);
|
|
case AKEYCODE_NUM_LOCK:
|
|
return toggleLockedMetaState(AMETA_NUM_LOCK_ON, down, oldMetaState);
|
|
case AKEYCODE_SCROLL_LOCK:
|
|
return toggleLockedMetaState(AMETA_SCROLL_LOCK_ON, down, oldMetaState);
|
|
default:
|
|
return oldMetaState;
|
|
}
|
|
}
|
|
|
|
bool isMetaKey(int32_t keyCode) {
|
|
switch (keyCode) {
|
|
case AKEYCODE_ALT_LEFT:
|
|
case AKEYCODE_ALT_RIGHT:
|
|
case AKEYCODE_SHIFT_LEFT:
|
|
case AKEYCODE_SHIFT_RIGHT:
|
|
case AKEYCODE_SYM:
|
|
case AKEYCODE_FUNCTION:
|
|
case AKEYCODE_CTRL_LEFT:
|
|
case AKEYCODE_CTRL_RIGHT:
|
|
case AKEYCODE_META_LEFT:
|
|
case AKEYCODE_META_RIGHT:
|
|
case AKEYCODE_CAPS_LOCK:
|
|
case AKEYCODE_NUM_LOCK:
|
|
case AKEYCODE_SCROLL_LOCK:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
} // namespace android
|