From bc29063bf4e2312133d91e211dfe9c86ee811489 Mon Sep 17 00:00:00 2001 From: Dima Zavin Date: Tue, 30 Aug 2011 11:59:45 -0700 Subject: minui: events: refactor event acquisition Events are now delivered through a callback mechanism during a call to ev_dispatch(). This will allow us to extend the events code to handle other devices/fds, not just input. One such example is the ability to process uevents. During initialization, we provide an input callback to ev_init that gets called when a new event is encountered during dispatch. ev_get has been removed and replaced with ev_get_input() helper function that can be called from inside the callback to attempt to get an input event. The existing client of ev_get in recovery has been split up such that the input thread just calls ev_wait(); ev_dispatch(); and the input_callback handles individual events by using the ev_get_input() helper. Change-Id: I24d8e71bd1533876b4ab1ae751ba200fea43c049 Signed-off-by: Dima Zavin --- ui.c | 132 ++++++++++++++++++++++++++++++++++++------------------------------- 1 file changed, 72 insertions(+), 60 deletions(-) (limited to 'ui.c') diff --git a/ui.c b/ui.c index 4e41bc907..d08f7d31a 100644 --- a/ui.c +++ b/ui.c @@ -295,71 +295,83 @@ static void *progress_thread(void *cookie) return NULL; } -// Reads input events, handles special hot keys, and adds to the key queue. -static void *input_thread(void *cookie) +static int rel_sum = 0; + +static int input_callback(int fd, short revents, void *data) { - int rel_sum = 0; + struct input_event ev; + int ret; int fake_key = 0; - for (;;) { - // wait for the next key event - struct input_event ev; - do { - ev_get(&ev, 0); - - if (ev.type == EV_SYN) { - continue; - } else if (ev.type == EV_REL) { - if (ev.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. - rel_sum += ev.value; - if (rel_sum > 3) { - fake_key = 1; - ev.type = EV_KEY; - ev.code = KEY_DOWN; - ev.value = 1; - rel_sum = 0; - } else if (rel_sum < -3) { - fake_key = 1; - ev.type = EV_KEY; - ev.code = KEY_UP; - ev.value = 1; - rel_sum = 0; - } - } - } else { + + ret = ev_get_input(fd, revents, &ev); + if (ret) + return -1; + + if (ev.type == EV_SYN) { + return 0; + } else if (ev.type == EV_REL) { + if (ev.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. + rel_sum += ev.value; + if (rel_sum > 3) { + fake_key = 1; + ev.type = EV_KEY; + ev.code = KEY_DOWN; + ev.value = 1; + rel_sum = 0; + } else if (rel_sum < -3) { + fake_key = 1; + ev.type = EV_KEY; + ev.code = KEY_UP; + ev.value = 1; rel_sum = 0; } - } while (ev.type != EV_KEY || ev.code > KEY_MAX); - - pthread_mutex_lock(&key_queue_mutex); - if (!fake_key) { - // our "fake" keys only report a key-down event (no - // key-up), so don't record them in the key_pressed - // table. - key_pressed[ev.code] = ev.value; - } - fake_key = 0; - const int queue_max = sizeof(key_queue) / sizeof(key_queue[0]); - if (ev.value > 0 && key_queue_len < queue_max) { - key_queue[key_queue_len++] = ev.code; - pthread_cond_signal(&key_queue_cond); - } - pthread_mutex_unlock(&key_queue_mutex); - - if (ev.value > 0 && device_toggle_display(key_pressed, ev.code)) { - pthread_mutex_lock(&gUpdateMutex); - show_text = !show_text; - if (show_text) show_text_ever = 1; - update_screen_locked(); - pthread_mutex_unlock(&gUpdateMutex); } + } else { + rel_sum = 0; + } - if (ev.value > 0 && device_reboot_now(key_pressed, ev.code)) { - android_reboot(ANDROID_RB_RESTART, 0, 0); - } + if (ev.type != EV_KEY || ev.code > KEY_MAX) + return 0; + + pthread_mutex_lock(&key_queue_mutex); + if (!fake_key) { + // our "fake" keys only report a key-down event (no + // key-up), so don't record them in the key_pressed + // table. + key_pressed[ev.code] = ev.value; + } + const int queue_max = sizeof(key_queue) / sizeof(key_queue[0]); + if (ev.value > 0 && key_queue_len < queue_max) { + key_queue[key_queue_len++] = ev.code; + pthread_cond_signal(&key_queue_cond); + } + pthread_mutex_unlock(&key_queue_mutex); + + if (ev.value > 0 && device_toggle_display(key_pressed, ev.code)) { + pthread_mutex_lock(&gUpdateMutex); + show_text = !show_text; + if (show_text) show_text_ever = 1; + update_screen_locked(); + pthread_mutex_unlock(&gUpdateMutex); + } + + if (ev.value > 0 && device_reboot_now(key_pressed, ev.code)) { + android_reboot(ANDROID_RB_RESTART, 0, 0); + } + + return 0; +} + +// Reads input events, handles special hot keys, and adds to the key queue. +static void *input_thread(void *cookie) +{ + for (;;) { + if (!ev_wait(-1)) + ev_dispatch(); } return NULL; } @@ -367,7 +379,7 @@ static void *input_thread(void *cookie) void ui_init(void) { gr_init(); - ev_init(); + ev_init(input_callback, NULL); text_col = text_row = 0; text_rows = gr_fb_height() / CHAR_HEIGHT; -- cgit v1.2.3