| /* |
| * 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 <ui/Keyboard.h> |
| #include <ui/KeycodeLabels.h> |
| #include <utils/Errors.h> |
| #include <utils/Log.h> |
| #include <cutils/properties.h> |
| |
| namespace android { |
| |
| static bool probeKeyMap(KeyMapInfo& keyMapInfo, const String8& keyMapName, bool defaultKeyMap) { |
| bool foundOne = false; |
| if (keyMapInfo.keyLayoutFile.isEmpty()) { |
| keyMapInfo.keyLayoutFile.setTo(getInputDeviceConfigurationFilePath(keyMapName, |
| INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_LAYOUT)); |
| if (!keyMapInfo.keyLayoutFile.isEmpty()) { |
| foundOne = true; |
| } |
| } |
| |
| if (keyMapInfo.keyCharacterMapFile.isEmpty()) { |
| keyMapInfo.keyCharacterMapFile.setTo(getInputDeviceConfigurationFilePath(keyMapName, |
| INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_CHARACTER_MAP)); |
| if (!keyMapInfo.keyCharacterMapFile.isEmpty()) { |
| foundOne = true; |
| } |
| } |
| |
| if (foundOne && defaultKeyMap) { |
| keyMapInfo.isDefaultKeyMap = true; |
| } |
| return keyMapInfo.isComplete(); |
| } |
| |
| status_t resolveKeyMap(const String8& deviceName, |
| const PropertyMap* deviceConfiguration, KeyMapInfo& outKeyMapInfo) { |
| // Use the configured key layout if available. |
| if (deviceConfiguration) { |
| String8 keyLayoutName; |
| if (deviceConfiguration->tryGetProperty(String8("keyboard.layout"), |
| keyLayoutName)) { |
| outKeyMapInfo.keyLayoutFile.setTo(getInputDeviceConfigurationFilePath( |
| keyLayoutName, INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_LAYOUT)); |
| if (outKeyMapInfo.keyLayoutFile.isEmpty()) { |
| LOGW("Configuration for keyboard device '%s' requested keyboard layout '%s' but " |
| "it was not found.", |
| deviceName.string(), keyLayoutName.string()); |
| } |
| } |
| |
| String8 keyCharacterMapName; |
| if (deviceConfiguration->tryGetProperty(String8("keyboard.characterMap"), |
| keyCharacterMapName)) { |
| outKeyMapInfo.keyCharacterMapFile.setTo(getInputDeviceConfigurationFilePath( |
| keyCharacterMapName, INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_CHARACTER_MAP)); |
| if (outKeyMapInfo.keyCharacterMapFile.isEmpty()) { |
| LOGW("Configuration for keyboard device '%s' requested keyboard character " |
| "map '%s' but it was not found.", |
| deviceName.string(), keyCharacterMapName.string()); |
| } |
| } |
| |
| if (outKeyMapInfo.isComplete()) { |
| return OK; |
| } |
| } |
| |
| // Try searching by device name. |
| if (probeKeyMap(outKeyMapInfo, deviceName, false)) { |
| 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.). |
| if (probeKeyMap(outKeyMapInfo, String8("Generic"), true)) { |
| return OK; |
| } |
| |
| // Give up! |
| LOGE("Could not determine key map for device '%s' and the Generic key map was not found!", |
| deviceName.string()); |
| outKeyMapInfo.isDefaultKeyMap = true; |
| return NAME_NOT_FOUND; |
| } |
| |
| void setKeyboardProperties(int32_t deviceId, const String8& deviceName, |
| const KeyMapInfo& keyMapInfo) { |
| char propName[PROPERTY_KEY_MAX]; |
| snprintf(propName, sizeof(propName), "hw.keyboards.%u.devname", deviceId); |
| property_set(propName, deviceName.string()); |
| snprintf(propName, sizeof(propName), "hw.keyboards.%u.klfile", deviceId); |
| property_set(propName, keyMapInfo.keyLayoutFile.string()); |
| snprintf(propName, sizeof(propName), "hw.keyboards.%u.kcmfile", deviceId); |
| property_set(propName, keyMapInfo.keyCharacterMapFile.string()); |
| } |
| |
| void clearKeyboardProperties(int32_t deviceId) { |
| char propName[PROPERTY_KEY_MAX]; |
| snprintf(propName, sizeof(propName), "hw.keyboards.%u.devname", deviceId); |
| property_set(propName, ""); |
| snprintf(propName, sizeof(propName), "hw.keyboards.%u.klfile", deviceId); |
| property_set(propName, ""); |
| snprintf(propName, sizeof(propName), "hw.keyboards.%u.kcmfile", deviceId); |
| property_set(propName, ""); |
| } |
| |
| status_t getKeyCharacterMapFile(int32_t deviceId, String8& outKeyCharacterMapFile) { |
| if (deviceId == DEVICE_ID_VIRTUAL_KEYBOARD) { |
| outKeyCharacterMapFile.setTo(getInputDeviceConfigurationFilePath(String8("Virtual"), |
| INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_CHARACTER_MAP)); |
| if (!outKeyCharacterMapFile.isEmpty()) { |
| return OK; |
| } |
| } |
| |
| char propName[PROPERTY_KEY_MAX]; |
| char fn[PROPERTY_VALUE_MAX]; |
| snprintf(propName, sizeof(propName), "hw.keyboards.%u.kcmfile", deviceId); |
| if (property_get(propName, fn, "") > 0) { |
| outKeyCharacterMapFile.setTo(fn); |
| return OK; |
| } |
| |
| outKeyCharacterMapFile.setTo(getInputDeviceConfigurationFilePath(String8("Generic"), |
| INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_CHARACTER_MAP)); |
| if (!outKeyCharacterMapFile.isEmpty()) { |
| return OK; |
| } |
| |
| LOGE("Can't find any key character map files (also tried Virtual and Generic key maps)"); |
| return NAME_NOT_FOUND; |
| } |
| |
| static int lookupLabel(const char* literal, const KeycodeLabel *list) { |
| while (list->literal) { |
| if (strcmp(literal, list->literal) == 0) { |
| return list->value; |
| } |
| list++; |
| } |
| return list->value; |
| } |
| |
| int32_t getKeyCodeByLabel(const char* label) { |
| return int32_t(lookupLabel(label, KEYCODES)); |
| } |
| |
| uint32_t getKeyFlagByLabel(const char* label) { |
| return uint32_t(lookupLabel(label, FLAGS)); |
| } |
| |
| 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; |
| } |
| } |
| |
| |
| } // namespace android |