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ui.cpp
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ui.cpp
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/*
* Copyright (C) 2011 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.
*/
#include <errno.h>
#include <fcntl.h>
#include <linux/input.h>
#include <pthread.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <poll.h>
#include <cutils/android_reboot.h>
#include <cutils/properties.h>
#include "common.h"
#include "roots.h"
#include "device.h"
#include "minui/minui.h"
#include "screen_ui.h"
#include "ui.h"
#include "voldclient/voldclient.h"
#include "messagesocket.h"
#define UI_WAIT_KEY_TIMEOUT_SEC 120
/* Some extra input defines */
#ifndef ABS_MT_ANGLE
#define ABS_MT_ANGLE 0x38
#endif
static void show_event(int fd, struct input_event *ev)
{
#ifdef DEBUG_EVENTS
char typebuf[40];
char codebuf[40];
const char *evtypestr = NULL;
const char *evcodestr = NULL;
sprintf(typebuf, "0x%04x", ev->type);
evtypestr = typebuf;
sprintf(codebuf, "0x%04x", ev->code);
evcodestr = codebuf;
switch (ev->type) {
case EV_SYN:
evtypestr = "EV_SYN";
switch (ev->code) {
case SYN_REPORT:
evcodestr = "SYN_REPORT";
break;
case SYN_MT_REPORT:
evcodestr = "SYN_MT_REPORT";
break;
}
break;
case EV_KEY:
evtypestr = "EV_KEY";
switch (ev->code) {
case KEY_HOME: /* 102 */
evcodestr = "KEY_HOME";
break;
case KEY_POWER: /* 116 */
evcodestr = "KEY_POWER";
break;
case KEY_MENU: /* 139 */
evcodestr = "KEY_MENU";
break;
case KEY_BACK: /* 158 */
evcodestr = "KEY_BACK";
break;
case KEY_HOMEPAGE: /* 172 */
evcodestr = "KEY_HOMEPAGE";
break;
case KEY_SEARCH: /* 217 */
evcodestr = "KEY_SEARCH";
break;
case BTN_TOOL_FINGER: /* 0x145 */
evcodestr = "BTN_TOOL_FINGER";
break;
case BTN_TOUCH: /* 0x14a */
evcodestr = "BTN_TOUCH";
break;
}
break;
case EV_REL:
evtypestr = "EV_REL";
switch (ev->code) {
case REL_X:
evcodestr = "REL_X";
break;
case REL_Y:
evcodestr = "REL_Y";
break;
case REL_Z:
evcodestr = "REL_Z";
break;
}
break;
case EV_ABS:
evtypestr = "EV_ABS";
switch (ev->code) {
case ABS_MT_TOUCH_MAJOR:
evcodestr = "ABS_MT_TOUCH_MAJOR";
break;
case ABS_MT_TOUCH_MINOR:
evcodestr = "ABS_MT_TOUCH_MINOR";
break;
case ABS_MT_WIDTH_MAJOR:
evcodestr = "ABS_MT_WIDTH_MAJOR";
break;
case ABS_MT_WIDTH_MINOR:
evcodestr = "ABS_MT_WIDTH_MINOR";
break;
case ABS_MT_ORIENTATION:
evcodestr = "ABS_MT_ORIENTATION";
break;
case ABS_MT_POSITION_X:
evcodestr = "ABS_MT_POSITION_X";
break;
case ABS_MT_POSITION_Y:
evcodestr = "ABS_MT_POSITION_Y";
break;
case ABS_MT_TRACKING_ID:
evcodestr = "ABS_MT_TRACKING_ID";
break;
case ABS_MT_PRESSURE:
evcodestr = "ABS_MT_PRESSURE";
break;
case ABS_MT_ANGLE:
evcodestr = "ABS_MT_ANGLE";
break;
}
break;
}
LOGI("show_event: fd=%d, type=%s, code=%s, val=%d\n", fd, evtypestr, evcodestr, ev->value);
#endif
}
// There's only (at most) one of these objects, and global callbacks
// (for pthread_create, and the input event system) need to find it,
// so use a global variable.
static RecoveryUI* self = NULL;
static int string_split(char* s, char** fields, int maxfields)
{
int n = 0;
while (n+1 < maxfields) {
char* p = strchr(s, ' ');
if (!p)
break;
*p = '\0';
printf("string_split: field[%d]=%s\n", n, s);
fields[n++] = s;
s = p+1;
}
fields[n] = s;
printf("string_split: last field[%d]=%s\n", n, s);
return n+1;
}
static int message_socket_client_event(int fd, short revents, void *data)
{
MessageSocket* client = (MessageSocket*)data;
printf("message_socket client event\n");
if (!(revents & POLLIN)) {
return 0;
}
char buf[256];
ssize_t nread;
nread = client->Read(buf, sizeof(buf));
if (nread <= 0) {
ev_del_fd(fd);
self->DialogDismiss();
client->Close();
delete client;
return 0;
}
printf("message_socket client message <%s>\n", buf);
// Parse the message. Right now we support:
// dialog show <string>
// dialog dismiss
char* fields[3];
int nfields;
nfields = string_split(buf, fields, 3);
printf("fields=%d\n", nfields);
if (nfields < 2)
return 0;
printf("field[0]=%s, field[1]=%s\n", fields[0], fields[1]);
if (strcmp(fields[0], "dialog") == 0) {
if (strcmp(fields[1], "show") == 0 && nfields > 2) {
self->DialogShowInfo(fields[2]);
}
if (strcmp(fields[1], "dismiss") == 0) {
self->DialogDismiss();
}
}
return 0;
}
static int message_socket_listen_event(int fd, short revents, void *data)
{
MessageSocket* ms = (MessageSocket*)data;
MessageSocket* client = ms->Accept();
printf("message_socket_listen_event: event on %d\n", fd);
if (client) {
printf("message_socket client connected\n");
ev_add_fd(client->fd(), message_socket_client_event, client);
}
return 0;
}
RecoveryUI::RecoveryUI() :
key_queue_len(0),
key_last_down(-1),
key_long_press(false),
key_down_count(0),
consecutive_power_keys(0),
consecutive_alternate_keys(0),
last_key(-1) {
pthread_mutex_init(&key_queue_mutex, NULL);
pthread_cond_init(&key_queue_cond, NULL);
self = this;
memset(key_pressed, 0, sizeof(key_pressed));
}
void RecoveryUI::Init() {
calibrate_swipe();
ev_init(input_callback, NULL);
message_socket.ServerInit();
ev_add_fd(message_socket.fd(), message_socket_listen_event, &message_socket);
pthread_create(&input_t, NULL, input_thread, NULL);
}
int RecoveryUI::input_callback(int fd, short revents, void* data)
{
struct input_event ev;
int ret;
ret = ev_get_input(fd, revents, &ev);
if (ret)
return -1;
show_event(fd, &ev);
input_device* dev = NULL;
int n;
for (n = 0; n < MAX_NR_INPUT_DEVICES; ++n) {
if (self->input_devices[n].fd == fd) {
dev = &self->input_devices[n];
break;
}
if (self->input_devices[n].fd == -1) {
dev = &self->input_devices[n];
memset(dev, 0, sizeof(input_device));
dev->fd = fd;
dev->tracking_id = -1;
self->calibrate_touch(dev);
self->setup_vkeys(dev);
break;
}
}
if (!dev) {
LOGE("input_callback: no more available input devices\n");
return -1;
}
if (ev.type != EV_REL) {
dev->rel_sum = 0;
}
switch (ev.type) {
case EV_SYN:
self->process_syn(dev, ev.code, ev.value);
break;
case EV_ABS:
self->process_abs(dev, ev.code, ev.value);
break;
case EV_REL:
self->process_rel(dev, ev.code, ev.value);
break;
case EV_KEY:
self->process_key(dev, ev.code, ev.value);
break;
}
return 0;
}
// Process a key-up or -down event. A key is "registered" when it is
// pressed and then released, with no other keypresses or releases in
// between. Registered keys are passed to CheckKey() to see if it
// should trigger a visibility toggle, an immediate reboot, or be
// queued to be processed next time the foreground thread wants a key
// (eg, for the menu).
//
// We also keep track of which keys are currently down so that
// CheckKey can call IsKeyPressed to see what other keys are held when
// a key is registered.
//
// updown == 1 for key down events; 0 for key up events
void RecoveryUI::process_key(input_device* dev, int key_code, int updown) {
bool register_key = false;
bool long_press = false;
if (key_code > KEY_MAX)
return;
pthread_mutex_lock(&key_queue_mutex);
key_pressed[key_code] = updown;
if (updown) {
++key_down_count;
key_last_down = key_code;
key_long_press = false;
pthread_t th;
key_timer_t* info = new key_timer_t;
info->ui = this;
info->key_code = key_code;
info->count = key_down_count;
pthread_create(&th, NULL, &RecoveryUI::time_key_helper, info);
pthread_detach(th);
} else {
if (key_last_down == key_code) {
long_press = key_long_press;
register_key = true;
}
key_last_down = -1;
}
pthread_mutex_unlock(&key_queue_mutex);
if (register_key) {
NextCheckKeyIsLong(long_press);
switch (CheckKey(key_code)) {
case RecoveryUI::IGNORE:
break;
case RecoveryUI::TOGGLE:
ShowText(!IsTextVisible());
break;
case RecoveryUI::REBOOT:
vold_unmount_all();
android_reboot(ANDROID_RB_RESTART, 0, 0);
break;
case RecoveryUI::ENQUEUE:
EnqueueKey(key_code);
break;
case RecoveryUI::MOUNT_SYSTEM:
#ifndef NO_RECOVERY_MOUNT
ensure_path_mounted("/system");
Print("Mounted /system.");
#endif
break;
}
}
}
void RecoveryUI::process_syn(input_device* dev, int code, int value) {
/*
* Type A device release:
* 1. Lack of position update
* 2. BTN_TOUCH | ABS_PRESSURE | SYN_MT_REPORT
* 3. SYN_REPORT
*
* Type B device release:
* 1. ABS_MT_TRACKING_ID == -1 for "first" slot
* 2. SYN_REPORT
*/
if (code == SYN_MT_REPORT) {
if (!dev->in_touch && (dev->saw_pos_x && dev->saw_pos_y)) {
#ifdef DEBUG_TOUCH
LOGI("process_syn: type a press\n");
#endif
handle_press(dev);
}
dev->saw_mt_report = true;
return;
}
if (code == SYN_REPORT) {
if (dev->in_touch) {
handle_gestures(dev);
}
else {
if (dev->saw_tracking_id) {
#ifdef DEBUG_TOUCH
LOGI("process_syn: type b press\n");
#endif
handle_press(dev);
}
}
/* Detect release */
if (dev->saw_mt_report) {
if (dev->in_touch && !dev->saw_pos_x && !dev->saw_pos_y) {
/* type A release */
#ifdef DEBUG_TOUCH
LOGI("process_syn: type a release\n");
#endif
handle_release(dev);
dev->slot_first = 0;
}
}
else {
if (dev->in_touch && dev->saw_tracking_id && dev->tracking_id == -1 &&
dev->slot_current == dev->slot_first) {
/* type B release */
#ifdef DEBUG_TOUCH
LOGI("process_syn: type b release\n");
#endif
handle_release(dev);
dev->slot_first = 0;
}
}
dev->saw_pos_x = dev->saw_pos_y = false;
dev->saw_mt_report = dev->saw_tracking_id = false;
}
}
void RecoveryUI::process_abs(input_device* dev, int code, int value) {
if (code == ABS_MT_SLOT) {
dev->slot_current = value;
if (dev->slot_first == -1) {
dev->slot_first = value;
}
return;
}
if (code == ABS_MT_TRACKING_ID) {
/*
* Some devices send an initial ABS_MT_SLOT event before switching
* to type B events, so discard any type A state related to slot.
*/
dev->saw_tracking_id = true;
dev->slot_first = dev->slot_current = 0;
if (value != dev->tracking_id) {
dev->tracking_id = value;
if (dev->tracking_id < 0) {
dev->slot_nr_active--;
}
else {
dev->slot_nr_active++;
}
}
return;
}
/*
* For type A devices, we "lock" onto the first coordinates by ignoring
* position updates from the time we see a SYN_MT_REPORT until the next
* SYN_REPORT
*
* For type B devices, we "lock" onto the first slot seen until all slots
* are released
*/
if (dev->slot_nr_active == 0) {
/* type A */
if (dev->saw_pos_x && dev->saw_pos_y) {
return;
}
}
else {
if (dev->slot_current != dev->slot_first) {
return;
}
}
if (code == ABS_MT_POSITION_X) {
dev->saw_pos_x = true;
dev->touch_pos.x = value * fb_dimensions.x / (dev->touch_max.x - dev->touch_min.x);
}
else if (code == ABS_MT_POSITION_Y) {
dev->saw_pos_y = true;
dev->touch_pos.y = value * fb_dimensions.y / (dev->touch_max.y - dev->touch_min.y);
}
}
void RecoveryUI::process_rel(input_device* dev, int code, int value) {
#ifdef BOARD_RECOVERY_NEEDS_REL_INPUT
if (code == REL_Y) {
// accumulate the up or down motion reported by
// the trackball. When it exceeds a threshold
// (positive or negative), fake an up/down
// key event.
dev->rel_sum += value;
if (dev->rel_sum > 3) {
process_key(dev, KEY_DOWN, 1); // press down key
process_key(dev, KEY_DOWN, 0); // and release it
dev->rel_sum = 0;
} else if (dev->rel_sum < -3) {
process_key(dev, KEY_UP, 1); // press up key
process_key(dev, KEY_UP, 0); // and release it
dev->rel_sum = 0;
}
}
#endif
}
void* RecoveryUI::time_key_helper(void* cookie) {
key_timer_t* info = (key_timer_t*) cookie;
info->ui->time_key(info->key_code, info->count);
delete info;
return NULL;
}
void RecoveryUI::time_key(int key_code, int count) {
usleep(750000); // 750 ms == "long"
bool long_press = false;
pthread_mutex_lock(&key_queue_mutex);
if (key_last_down == key_code && key_down_count == count) {
long_press = key_long_press = true;
}
pthread_mutex_unlock(&key_queue_mutex);
if (long_press) KeyLongPress(key_code);
}
void RecoveryUI::calibrate_touch(input_device* dev) {
fb_dimensions.x = gr_fb_width();
fb_dimensions.y = gr_fb_height();
struct input_absinfo info;
memset(&info, 0, sizeof(info));
if (ioctl(dev->fd, EVIOCGABS(ABS_MT_POSITION_X), &info) == 0) {
dev->touch_min.x = info.minimum;
dev->touch_max.x = info.maximum;
dev->touch_pos.x = info.value;
}
memset(&info, 0, sizeof(info));
if (ioctl(dev->fd, EVIOCGABS(ABS_MT_POSITION_Y), &info) == 0) {
dev->touch_min.y = info.minimum;
dev->touch_max.y = info.maximum;
dev->touch_pos.y = info.value;
}
#ifdef DEBUG_TOUCH
LOGI("calibrate_touch: fd=%d, (%d,%d)-(%d,%d) pos (%d,%d)\n", dev->fd,
dev->touch_min.x, dev->touch_min.y,
dev->touch_max.x, dev->touch_max.y,
dev->touch_pos.x, dev->touch_pos.y);
#endif
}
void RecoveryUI::setup_vkeys(input_device* dev) {
int n;
char name[256];
char path[PATH_MAX];
char buf[64*MAX_NR_VKEYS];
for (n = 0; n < MAX_NR_VKEYS; ++n) {
dev->virtual_keys[n].keycode = -1;
}
memset(name, 0, sizeof(name));
if (ioctl(dev->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
LOGI("setup_vkeys: no vkeys\n");
return;
}
sprintf(path, "/sys/board_properties/virtualkeys.%s", name);
int vkfd = open(path, O_RDONLY);
if (vkfd < 0) {
LOGI("setup_vkeys: could not open %s\n", path);
return;
}
ssize_t len = read(vkfd, buf, sizeof(buf));
close(vkfd);
if (len <= 0) {
LOGE("setup_vkeys: could not read %s\n", path);
return;
}
buf[len] = '\0';
char* p = buf;
char* endp;
for (n = 0; n < MAX_NR_VKEYS && p < buf+len && *p == '0'; ++n) {
int val[6];
int f;
for (f = 0; *p && f < 6; ++f) {
val[f] = strtol(p, &endp, 0);
if (p == endp)
break;
p = endp+1;
}
if (f != 6 || val[0] != 0x01)
break;
dev->virtual_keys[n].keycode = val[1];
dev->virtual_keys[n].min.x = val[2] - val[4]/2;
dev->virtual_keys[n].min.y = val[3] - val[5]/2;
dev->virtual_keys[n].max.x = val[2] + val[4]/2;
dev->virtual_keys[n].max.y = val[3] + val[5]/2;
#ifdef DEBUG_TOUCH
LOGI("vkey: fd=%d, [%d]=(%d,%d)-(%d,%d)\n", dev->fd,
dev->virtual_keys[n].keycode,
dev->virtual_keys[n].min.x, dev->virtual_keys[n].min.y,
dev->virtual_keys[n].max.x, dev->virtual_keys[n].max.y);
#endif
}
}
void RecoveryUI::calibrate_swipe() {
char strvalue[PROPERTY_VALUE_MAX];
int intvalue;
property_get("ro.sf.lcd_density", strvalue, "160");
intvalue = atoi(strvalue);
int screen_density = (intvalue >= 160 ? intvalue : 160);
min_swipe_px.x = screen_density * 50 / 100; // Roughly 0.5in
min_swipe_px.y = screen_density * 30 / 100; // Roughly 0.3in
#ifdef DEBUG_TOUCH
LOGI("calibrate_swipe: density=%d, min_swipe=(%d,%d)\n",
screen_density, min_swipe_px.x, min_swipe_px.y);
#endif
}
void RecoveryUI::handle_press(input_device* dev) {
dev->touch_start = dev->touch_track = dev->touch_pos;
dev->in_touch = true;
dev->in_swipe = false;
}
void RecoveryUI::handle_release(input_device* dev) {
struct point diff = dev->touch_pos - dev->touch_start;
bool in_touch = dev->in_touch;
bool in_swipe = dev->in_swipe;
dev->in_touch = dev->in_swipe = false;
if (!in_swipe) {
int n;
for (n = 0; dev->virtual_keys[n].keycode != -1 && n < MAX_NR_VKEYS; ++n) {
vkey* vk = &dev->virtual_keys[n];
if (dev->touch_start.x >= vk->min.x && dev->touch_start.x < vk->max.x &&
dev->touch_start.y >= vk->min.y && dev->touch_start.y < vk->max.y) {
#ifdef DEBUG_TOUCH
LOGI("handle_release: vkey %d\n", vk->keycode);
#endif
EnqueueKey(vk->keycode);
return;
}
}
}
if (DialogShowing()) {
if (DialogDismissable() && !dev->in_swipe) {
DialogDismiss();
}
return;
}
if (in_swipe) {
if (abs(diff.x) > abs(diff.y)) {
if (abs(diff.x) > min_swipe_px.x) {
int key = (diff.x > 0 ? KEY_ENTER : KEY_BACK);
process_key(dev, key, 1);
process_key(dev, key, 0);
}
}
else {
/* Vertical swipe, handled realtime */
}
}
else {
int sel, start_menu_pos;
// Make sure touch pos is not less than menu start pos.
// No need to check if beyond end of menu items, since
// that is checked by get_menu_selection().
start_menu_pos = MenuItemStart();
if (dev->touch_pos.y >= start_menu_pos) {
sel = (dev->touch_pos.y - start_menu_pos)/MenuItemHeight();
EnqueueKey(KEY_FLAG_ABS | sel);
}
}
}
void RecoveryUI::handle_gestures(input_device* dev) {
struct point diff;
diff = dev->touch_pos - dev->touch_start;
if (abs(diff.x) > abs(diff.y)) {
if (abs(diff.x) > min_swipe_px.x) {
/* Horizontal swipe, handle it on release */
dev->in_swipe = true;
}
}
else {
diff.y = dev->touch_pos.y - dev->touch_track.y;
if (abs(diff.y) > MenuItemHeight()) {
dev->in_swipe = true;
if (!DialogShowing()) {
dev->touch_track = dev->touch_pos;
int key = (diff.y < 0) ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
process_key(dev, key, 1);
process_key(dev, key, 0);
}
}
}
}
void RecoveryUI::EnqueueKey(int key_code) {
if (DialogShowing()) {
if (DialogDismissable()) {
DialogDismiss();
}
return;
}
pthread_mutex_lock(&key_queue_mutex);
const int queue_max = sizeof(key_queue) / sizeof(key_queue[0]);
if (key_queue_len < queue_max) {
key_queue[key_queue_len++] = key_code;
pthread_cond_signal(&key_queue_cond);
}
pthread_mutex_unlock(&key_queue_mutex);
}
// Reads input events, handles special hot keys, and adds to the key queue.
void* RecoveryUI::input_thread(void *cookie)
{
for (;;) {
if (!ev_wait(-1))
ev_dispatch();
}
return NULL;
}
void RecoveryUI::CancelWaitKey()
{
pthread_mutex_lock(&key_queue_mutex);
key_queue[key_queue_len] = -2;
key_queue_len++;
pthread_cond_signal(&key_queue_cond);
pthread_mutex_unlock(&key_queue_mutex);
}
int RecoveryUI::WaitKey()
{
pthread_mutex_lock(&key_queue_mutex);
int timeouts = UI_WAIT_KEY_TIMEOUT_SEC;
// Time out after UI_WAIT_KEY_TIMEOUT_SEC, unless a USB cable is
// plugged in.
do {
struct timeval now;
struct timespec timeout;
gettimeofday(&now, NULL);
timeout.tv_sec = now.tv_sec;
timeout.tv_nsec = now.tv_usec * 1000;
timeout.tv_sec += 1;
int rc = 0;
while (key_queue_len == 0 && rc != ETIMEDOUT) {
rc = pthread_cond_timedwait(&key_queue_cond, &key_queue_mutex,
&timeout);
if (VolumesChanged()) {
pthread_mutex_unlock(&key_queue_mutex);
return Device::kRefresh;
}
}
timeouts--;
} while ((timeouts || usb_connected()) && key_queue_len == 0);
int key = -1;
if (key_queue_len > 0) {
key = key_queue[0];
memcpy(&key_queue[0], &key_queue[1], sizeof(int) * --key_queue_len);
}
pthread_mutex_unlock(&key_queue_mutex);
return key;
}
// Return true if USB is connected.
bool RecoveryUI::usb_connected() {
int fd = open("/sys/class/android_usb/android0/state", O_RDONLY);
if (fd < 0) {
printf("failed to open /sys/class/android_usb/android0/state: %s\n",
strerror(errno));
return 0;
}
char buf;
/* USB is connected if android_usb state is CONNECTED or CONFIGURED */
int connected = (read(fd, &buf, 1) == 1) && (buf == 'C');
if (close(fd) < 0) {
printf("failed to close /sys/class/android_usb/android0/state: %s\n",
strerror(errno));
}
return connected;
}
bool RecoveryUI::IsKeyPressed(int key)
{
pthread_mutex_lock(&key_queue_mutex);
int pressed = key_pressed[key];
pthread_mutex_unlock(&key_queue_mutex);
return pressed;
}
void RecoveryUI::FlushKeys() {
pthread_mutex_lock(&key_queue_mutex);
key_queue_len = 0;
pthread_mutex_unlock(&key_queue_mutex);
}
// The default CheckKey implementation assumes the device has power,
// volume up, and volume down keys.
//
// - Hold power and press vol-up to toggle display.
// - Press power seven times in a row to reboot.
// - Alternate vol-up and vol-down seven times to mount /system.
RecoveryUI::KeyAction RecoveryUI::CheckKey(int key) {
if (IsKeyPressed(KEY_POWER) && key == KEY_VOLUMEUP) {
return TOGGLE;
}
if (key == KEY_POWER) {
++consecutive_power_keys;
if (consecutive_power_keys >= 7) {
return REBOOT;
}
} else {
consecutive_power_keys = 0;
}
if ((key == KEY_VOLUMEUP &&
(last_key == KEY_VOLUMEDOWN || last_key == -1)) ||
(key == KEY_VOLUMEDOWN &&
(last_key == KEY_VOLUMEUP || last_key == -1))) {
++consecutive_alternate_keys;
if (consecutive_alternate_keys >= 7) {
consecutive_alternate_keys = 0;
return MOUNT_SYSTEM;
}
} else {
consecutive_alternate_keys = 0;
}
last_key = key;
return ENQUEUE;
}
void RecoveryUI::NextCheckKeyIsLong(bool is_long_press) {
}
void RecoveryUI::KeyLongPress(int key) {
}
void RecoveryUI::NotifyVolumesChanged() {
v_changed = 1;
}
bool RecoveryUI::VolumesChanged() {
int ret = v_changed;
if (v_changed > 0)
v_changed = 0;
return ret == 1;
}