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-rw-r--r--ui.cpp210
1 files changed, 108 insertions, 102 deletions
diff --git a/ui.cpp b/ui.cpp
index c8f08cdd1..1a0b079cc 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -39,40 +39,59 @@
#define UI_WAIT_KEY_TIMEOUT_SEC 120
-// 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;
-
-RecoveryUI::RecoveryUI() :
- key_queue_len(0),
- key_last_down(-1),
- key_long_press(false),
- key_down_count(0),
- enable_reboot(true),
- 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;
+RecoveryUI::RecoveryUI()
+ : key_queue_len(0),
+ key_last_down(-1),
+ key_long_press(false),
+ key_down_count(0),
+ enable_reboot(true),
+ consecutive_power_keys(0),
+ last_key(-1),
+ has_power_key(false),
+ has_up_key(false),
+ has_down_key(false) {
+ pthread_mutex_init(&key_queue_mutex, nullptr);
+ pthread_cond_init(&key_queue_cond, nullptr);
memset(key_pressed, 0, sizeof(key_pressed));
}
-void RecoveryUI::Init() {
- ev_init(input_callback, NULL);
- pthread_create(&input_t, NULL, input_thread, NULL);
+void RecoveryUI::OnKeyDetected(int key_code) {
+ if (key_code == KEY_POWER) {
+ has_power_key = true;
+ } else if (key_code == KEY_DOWN || key_code == KEY_VOLUMEDOWN) {
+ has_down_key = true;
+ } else if (key_code == KEY_UP || key_code == KEY_VOLUMEUP) {
+ has_up_key = true;
+ }
}
+int RecoveryUI::InputCallback(int fd, uint32_t epevents, void* data) {
+ return reinterpret_cast<RecoveryUI*>(data)->OnInputEvent(fd, epevents);
+}
-int RecoveryUI::input_callback(int fd, uint32_t epevents, void* data)
-{
- struct input_event ev;
- int ret;
+// Reads input events, handles special hot keys, and adds to the key queue.
+static void* InputThreadLoop(void*) {
+ while (true) {
+ if (!ev_wait(-1)) {
+ ev_dispatch();
+ }
+ }
+ return nullptr;
+}
+
+void RecoveryUI::Init() {
+ ev_init(InputCallback, this);
+
+ ev_iterate_available_keys(std::bind(&RecoveryUI::OnKeyDetected, this, std::placeholders::_1));
- ret = ev_get_input(fd, epevents, &ev);
- if (ret)
+ pthread_create(&input_thread_, nullptr, InputThreadLoop, nullptr);
+}
+
+int RecoveryUI::OnInputEvent(int fd, uint32_t epevents) {
+ struct input_event ev;
+ if (ev_get_input(fd, epevents, &ev) == -1) {
return -1;
+ }
if (ev.type == EV_SYN) {
return 0;
@@ -82,23 +101,24 @@ int RecoveryUI::input_callback(int fd, uint32_t epevents, void* data)
// the trackball. When it exceeds a threshold
// (positive or negative), fake an up/down
// key event.
- self->rel_sum += ev.value;
- if (self->rel_sum > 3) {
- self->process_key(KEY_DOWN, 1); // press down key
- self->process_key(KEY_DOWN, 0); // and release it
- self->rel_sum = 0;
- } else if (self->rel_sum < -3) {
- self->process_key(KEY_UP, 1); // press up key
- self->process_key(KEY_UP, 0); // and release it
- self->rel_sum = 0;
+ rel_sum += ev.value;
+ if (rel_sum > 3) {
+ ProcessKey(KEY_DOWN, 1); // press down key
+ ProcessKey(KEY_DOWN, 0); // and release it
+ rel_sum = 0;
+ } else if (rel_sum < -3) {
+ ProcessKey(KEY_UP, 1); // press up key
+ ProcessKey(KEY_UP, 0); // and release it
+ rel_sum = 0;
}
}
} else {
- self->rel_sum = 0;
+ rel_sum = 0;
}
- if (ev.type == EV_KEY && ev.code <= KEY_MAX)
- self->process_key(ev.code, ev.value);
+ if (ev.type == EV_KEY && ev.code <= KEY_MAX) {
+ ProcessKey(ev.code, ev.value);
+ }
return 0;
}
@@ -115,7 +135,7 @@ int RecoveryUI::input_callback(int fd, uint32_t epevents, void* data)
// a key is registered.
//
// updown == 1 for key down events; 0 for key up events
-void RecoveryUI::process_key(int key_code, int updown) {
+void RecoveryUI::ProcessKey(int key_code, int updown) {
bool register_key = false;
bool long_press = false;
bool reboot_enabled;
@@ -126,13 +146,13 @@ void RecoveryUI::process_key(int key_code, int 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);
+ pthread_t thread;
+ pthread_create(&thread, nullptr, &RecoveryUI::time_key_helper, info);
+ pthread_detach(thread);
} else {
if (key_last_down == key_code) {
long_press = key_long_press;
@@ -144,8 +164,7 @@ void RecoveryUI::process_key(int key_code, int updown) {
pthread_mutex_unlock(&key_queue_mutex);
if (register_key) {
- NextCheckKeyIsLong(long_press);
- switch (CheckKey(key_code)) {
+ switch (CheckKey(key_code, long_press)) {
case RecoveryUI::IGNORE:
break;
@@ -162,13 +181,6 @@ void RecoveryUI::process_key(int key_code, int updown) {
case RecoveryUI::ENQUEUE:
EnqueueKey(key_code);
break;
-
- case RecoveryUI::MOUNT_SYSTEM:
-#ifndef NO_RECOVERY_MOUNT
- ensure_path_mounted("/system");
- Print("Mounted /system.");
-#endif
- break;
}
}
}
@@ -177,7 +189,7 @@ 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;
+ return nullptr;
}
void RecoveryUI::time_key(int key_code, int count) {
@@ -201,19 +213,7 @@ void RecoveryUI::EnqueueKey(int key_code) {
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;
-}
-
-int RecoveryUI::WaitKey()
-{
+int RecoveryUI::WaitKey() {
pthread_mutex_lock(&key_queue_mutex);
// Time out after UI_WAIT_KEY_TIMEOUT_SEC, unless a USB cable is
@@ -221,17 +221,16 @@ int RecoveryUI::WaitKey()
do {
struct timeval now;
struct timespec timeout;
- gettimeofday(&now, NULL);
+ gettimeofday(&now, nullptr);
timeout.tv_sec = now.tv_sec;
timeout.tv_nsec = now.tv_usec * 1000;
timeout.tv_sec += UI_WAIT_KEY_TIMEOUT_SEC;
int rc = 0;
while (key_queue_len == 0 && rc != ETIMEDOUT) {
- rc = pthread_cond_timedwait(&key_queue_cond, &key_queue_mutex,
- &timeout);
+ rc = pthread_cond_timedwait(&key_queue_cond, &key_queue_mutex, &timeout);
}
- } while (usb_connected() && key_queue_len == 0);
+ } while (IsUsbConnected() && key_queue_len == 0);
int key = -1;
if (key_queue_len > 0) {
@@ -242,8 +241,7 @@ int RecoveryUI::WaitKey()
return key;
}
-// Return true if USB is connected.
-bool RecoveryUI::usb_connected() {
+bool RecoveryUI::IsUsbConnected() {
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",
@@ -252,8 +250,8 @@ bool RecoveryUI::usb_connected() {
}
char buf;
- /* USB is connected if android_usb state is CONNECTED or CONFIGURED */
- int connected = (read(fd, &buf, 1) == 1) && (buf == 'C');
+ // USB is connected if android_usb state is CONNECTED or CONFIGURED.
+ int connected = (TEMP_FAILURE_RETRY(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));
@@ -261,31 +259,55 @@ bool RecoveryUI::usb_connected() {
return connected;
}
-bool RecoveryUI::IsKeyPressed(int key)
-{
+bool RecoveryUI::IsKeyPressed(int key) {
pthread_mutex_lock(&key_queue_mutex);
int pressed = key_pressed[key];
pthread_mutex_unlock(&key_queue_mutex);
return pressed;
}
+bool RecoveryUI::IsLongPress() {
+ pthread_mutex_lock(&key_queue_mutex);
+ bool result = key_long_press;
+ pthread_mutex_unlock(&key_queue_mutex);
+ return result;
+}
+
+bool RecoveryUI::HasThreeButtons() {
+ return has_power_key && has_up_key && has_down_key;
+}
+
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) || key == KEY_HOME) {
- return TOGGLE;
+RecoveryUI::KeyAction RecoveryUI::CheckKey(int key, bool is_long_press) {
+ pthread_mutex_lock(&key_queue_mutex);
+ key_long_press = false;
+ pthread_mutex_unlock(&key_queue_mutex);
+
+ // If we have power and volume up keys, that chord is the signal to toggle the text display.
+ if (HasThreeButtons()) {
+ if (key == KEY_VOLUMEUP && IsKeyPressed(KEY_POWER)) {
+ return TOGGLE;
+ }
+ } else {
+ // Otherwise long press of any button toggles to the text display,
+ // and there's no way to toggle back (but that's pretty useless anyway).
+ if (is_long_press && !IsTextVisible()) {
+ return TOGGLE;
+ }
+
+ // Also, for button-limited devices, a long press is translated to KEY_ENTER.
+ if (is_long_press && IsTextVisible()) {
+ EnqueueKey(KEY_ENTER);
+ return IGNORE;
+ }
}
+ // Press power seven times in a row to reboot.
if (key == KEY_POWER) {
pthread_mutex_lock(&key_queue_mutex);
bool reboot_enabled = enable_reboot;
@@ -301,27 +323,11 @@ RecoveryUI::KeyAction RecoveryUI::CheckKey(int key) {
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) {
+ return IsTextVisible() ? ENQUEUE : IGNORE;
}
-void RecoveryUI::KeyLongPress(int key) {
+void RecoveryUI::KeyLongPress(int) {
}
void RecoveryUI::SetEnableReboot(bool enabled) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 03:11:15 +0100