/*
* 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 "common.h"
#include <cutils/android_reboot.h>
#include "minui/minui.h"
#include "ui.h"
#include "screen_ui.h"
#include "device.h"
#define CHAR_WIDTH 10
#define CHAR_HEIGHT 18
#define UI_WAIT_KEY_TIMEOUT_SEC 120
UIParameters ui_parameters = {
6, // indeterminate progress bar frames
20, // fps
7, // installation icon frames (0 == static image)
13, 190, // installation icon overlay offset
};
// 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 ScreenRecoveryUI* self = NULL;
// Return the current time as a double (including fractions of a second).
static double now() {
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec + tv.tv_usec / 1000000.0;
}
ScreenRecoveryUI::ScreenRecoveryUI() :
currentIcon(NONE),
installingFrame(0),
progressBarType(EMPTY),
progressScopeStart(0),
progressScopeSize(0),
progress(0),
pagesIdentical(false),
text_cols(0),
text_rows(0),
text_col(0),
text_row(0),
text_top(0),
show_text(false),
show_text_ever(false),
show_menu(false),
menu_top(0),
menu_items(0),
menu_sel(0),
key_queue_len(0),
key_last_down(-1) {
pthread_mutex_init(&updateMutex, NULL);
pthread_mutex_init(&key_queue_mutex, NULL);
pthread_cond_init(&key_queue_cond, NULL);
self = this;
}
// Draw the given frame over the installation overlay animation. The
// background is not cleared or draw with the base icon first; we
// assume that the frame already contains some other frame of the
// animation. Does nothing if no overlay animation is defined.
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_install_overlay_locked(int frame) {
if (installationOverlay == NULL) return;
gr_surface surface = installationOverlay[frame];
int iconWidth = gr_get_width(surface);
int iconHeight = gr_get_height(surface);
gr_blit(surface, 0, 0, iconWidth, iconHeight,
ui_parameters.install_overlay_offset_x,
ui_parameters.install_overlay_offset_y);
}
// Clear the screen and draw the currently selected background icon (if any).
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_background_locked(Icon icon)
{
pagesIdentical = false;
gr_color(0, 0, 0, 255);
gr_fill(0, 0, gr_fb_width(), gr_fb_height());
if (icon) {
gr_surface surface = backgroundIcon[icon];
int iconWidth = gr_get_width(surface);
int iconHeight = gr_get_height(surface);
int iconX = (gr_fb_width() - iconWidth) / 2;
int iconY = (gr_fb_height() - iconHeight) / 2;
gr_blit(surface, 0, 0, iconWidth, iconHeight, iconX, iconY);
if (icon == INSTALLING) {
draw_install_overlay_locked(installingFrame);
}
}
}
// Draw the progress bar (if any) on the screen. Does not flip pages.
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_progress_locked()
{
if (currentIcon == INSTALLING) {
draw_install_overlay_locked(installingFrame);
}
if (progressBarType != EMPTY) {
int iconHeight = gr_get_height(backgroundIcon[INSTALLING]);
int width = gr_get_width(progressBarEmpty);
int height = gr_get_height(progressBarEmpty);
int dx = (gr_fb_width() - width)/2;
int dy = (3*gr_fb_height() + iconHeight - 2*height)/4;
// Erase behind the progress bar (in case this was a progress-only update)
gr_color(0, 0, 0, 255);
gr_fill(dx, dy, width, height);
if (progressBarType == DETERMINATE) {
float p = progressScopeStart + progress * progressScopeSize;
int pos = (int) (p * width);
if (pos > 0) {
gr_blit(progressBarFill, 0, 0, pos, height, dx, dy);
}
if (pos < width-1) {
gr_blit(progressBarEmpty, pos, 0, width-pos, height, dx+pos, dy);
}
}
if (progressBarType == INDETERMINATE) {
static int frame = 0;
gr_blit(progressBarIndeterminate[frame], 0, 0, width, height, dx, dy);
frame = (frame + 1) % ui_parameters.indeterminate_frames;
}
}
}
void ScreenRecoveryUI::draw_text_line(int row, const char* t) {
if (t[0] != '\0') {
gr_text(0, (row+1)*CHAR_HEIGHT-1, t);
}
}
// Redraw everything on the screen. Does not flip pages.
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_screen_locked()
{
draw_background_locked(currentIcon);
draw_progress_locked();
if (show_text) {
gr_color(0, 0, 0, 160);
gr_fill(0, 0, gr_fb_width(), gr_fb_height());
int i = 0;
if (show_menu) {
gr_color(64, 96, 255, 255);
gr_fill(0, (menu_top+menu_sel) * CHAR_HEIGHT,
gr_fb_width(), (menu_top+menu_sel+1)*CHAR_HEIGHT+1);
for (; i < menu_top + menu_items; ++i) {
if (i == menu_top + menu_sel) {
gr_color(255, 255, 255, 255);
draw_text_line(i, menu[i]);
gr_color(64, 96, 255, 255);
} else {
draw_text_line(i, menu[i]);
}
}
gr_fill(0, i*CHAR_HEIGHT+CHAR_HEIGHT/2-1,
gr_fb_width(), i*CHAR_HEIGHT+CHAR_HEIGHT/2+1);
++i;
}
gr_color(255, 255, 0, 255);
for (; i < text_rows; ++i) {
draw_text_line(i, text[(i+text_top) % text_rows]);
}
}
}
// Redraw everything on the screen and flip the screen (make it visible).
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::update_screen_locked()
{
draw_screen_locked();
gr_flip();
}
// Updates only the progress bar, if possible, otherwise redraws the screen.
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::update_progress_locked()
{
if (show_text || !pagesIdentical) {
draw_screen_locked(); // Must redraw the whole screen
pagesIdentical = true;
} else {
draw_progress_locked(); // Draw only the progress bar and overlays
}
gr_flip();
}
// Keeps the progress bar updated, even when the process is otherwise busy.
void* ScreenRecoveryUI::progress_thread(void *cookie)
{
double interval = 1.0 / ui_parameters.update_fps;
for (;;) {
double start = now();
pthread_mutex_lock(&self->updateMutex);
int redraw = 0;
// update the installation animation, if active
// skip this if we have a text overlay (too expensive to update)
if (self->currentIcon == INSTALLING &&
ui_parameters.installing_frames > 0 &&
!self->show_text) {
self->installingFrame =
(self->installingFrame + 1) % ui_parameters.installing_frames;
redraw = 1;
}
// update the progress bar animation, if active
// skip this if we have a text overlay (too expensive to update)
if (self->progressBarType == INDETERMINATE && !self->show_text) {
redraw = 1;
}
// move the progress bar forward on timed intervals, if configured
int duration = self->progressScopeDuration;
if (self->progressBarType == DETERMINATE && duration > 0) {
double elapsed = now() - self->progressScopeTime;
float progress = 1.0 * elapsed / duration;
if (progress > 1.0) progress = 1.0;
if (progress > progress) {
progress = progress;
redraw = 1;
}
}
if (redraw) self->update_progress_locked();
pthread_mutex_unlock(&self->updateMutex);
double end = now();
// minimum of 20ms delay between frames
double delay = interval - (end-start);
if (delay < 0.02) delay = 0.02;
usleep((long)(delay * 1000000));
}
return NULL;
}
int ScreenRecoveryUI::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;
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.
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;
}
}
} else {
self->rel_sum = 0;
}
if (ev.type == EV_KEY && ev.code <= KEY_MAX)
self->process_key(ev.code, ev.value);
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 ScreenRecoveryUI::process_key(int key_code, int updown) {
bool register_key = false;
pthread_mutex_lock(&key_queue_mutex);
key_pressed[key_code] = updown;
if (updown) {
key_last_down = key_code;
} else {
if (key_last_down == key_code)
register_key = true;
key_last_down = -1;
}
pthread_mutex_unlock(&key_queue_mutex);
if (register_key) {
switch (CheckKey(key_code)) {
case RecoveryUI::TOGGLE:
pthread_mutex_lock(&updateMutex);
show_text = !show_text;
if (show_text) show_text_ever = true;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
break;
case RecoveryUI::REBOOT:
android_reboot(ANDROID_RB_RESTART, 0, 0);
break;
case RecoveryUI::ENQUEUE:
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);
break;
}
}
}
// Reads input events, handles special hot keys, and adds to the key queue.
void* ScreenRecoveryUI::input_thread(void *cookie)
{
for (;;) {
if (!ev_wait(-1))
ev_dispatch();
}
return NULL;
}
void ScreenRecoveryUI::LoadBitmap(const char* filename, gr_surface* surface) {
int result = res_create_surface(filename, surface);
if (result < 0) {
LOGE("missing bitmap %s\n(Code %d)\n", filename, result);
}
}
void ScreenRecoveryUI::Init()
{
gr_init();
ev_init(input_callback, NULL);
text_col = text_row = 0;
text_rows = gr_fb_height() / CHAR_HEIGHT;
if (text_rows > kMaxRows) text_rows = kMaxRows;
text_top = 1;
text_cols = gr_fb_width() / CHAR_WIDTH;
if (text_cols > kMaxCols - 1) text_cols = kMaxCols - 1;
LoadBitmap("icon_installing", &backgroundIcon[INSTALLING]);
LoadBitmap("icon_error", &backgroundIcon[ERROR]);
LoadBitmap("progress_empty", &progressBarEmpty);
LoadBitmap("progress_fill", &progressBarFill);
int i;
progressBarIndeterminate = (gr_surface*)malloc(ui_parameters.indeterminate_frames *
sizeof(gr_surface));
for (i = 0; i < ui_parameters.indeterminate_frames; ++i) {
char filename[40];
// "indeterminate01.png", "indeterminate02.png", ...
sprintf(filename, "indeterminate%02d", i+1);
LoadBitmap(filename, progressBarIndeterminate+i);
}
if (ui_parameters.installing_frames > 0) {
installationOverlay = (gr_surface*)malloc(ui_parameters.installing_frames *
sizeof(gr_surface));
for (i = 0; i < ui_parameters.installing_frames; ++i) {
char filename[40];
// "icon_installing_overlay01.png",
// "icon_installing_overlay02.png", ...
sprintf(filename, "icon_installing_overlay%02d", i+1);
LoadBitmap(filename, installationOverlay+i);
}
// Adjust the offset to account for the positioning of the
// base image on the screen.
if (backgroundIcon[INSTALLING] != NULL) {
gr_surface bg = backgroundIcon[INSTALLING];
ui_parameters.install_overlay_offset_x +=
(gr_fb_width() - gr_get_width(bg)) / 2;
ui_parameters.install_overlay_offset_y +=
(gr_fb_height() - gr_get_height(bg)) / 2;
}
} else {
installationOverlay = NULL;
}
pthread_create(&progress_t, NULL, progress_thread, NULL);
pthread_create(&input_t, NULL, input_thread, NULL);
}
void ScreenRecoveryUI::SetBackground(Icon icon)
{
pthread_mutex_lock(&updateMutex);
currentIcon = icon;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::SetProgressType(ProgressType type)
{
pthread_mutex_lock(&updateMutex);
if (progressBarType != type) {
progressBarType = type;
update_progress_locked();
}
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::ShowProgress(float portion, float seconds)
{
pthread_mutex_lock(&updateMutex);
progressBarType = DETERMINATE;
progressScopeStart += progressScopeSize;
progressScopeSize = portion;
progressScopeTime = now();
progressScopeDuration = seconds;
progress = 0;
update_progress_locked();
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::SetProgress(float fraction)
{
pthread_mutex_lock(&updateMutex);
if (fraction < 0.0) fraction = 0.0;
if (fraction > 1.0) fraction = 1.0;
if (progressBarType == DETERMINATE && fraction > progress) {
// Skip updates that aren't visibly different.
int width = gr_get_width(progressBarIndeterminate[0]);
float scale = width * progressScopeSize;
if ((int) (progress * scale) != (int) (fraction * scale)) {
progress = fraction;
update_progress_locked();
}
}
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::Print(const char *fmt, ...)
{
char buf[256];
va_list ap;
va_start(ap, fmt);
vsnprintf(buf, 256, fmt, ap);
va_end(ap);
fputs(buf, stdout);
// This can get called before ui_init(), so be careful.
pthread_mutex_lock(&updateMutex);
if (text_rows > 0 && text_cols > 0) {
char *ptr;
for (ptr = buf; *ptr != '\0'; ++ptr) {
if (*ptr == '\n' || text_col >= text_cols) {
text[text_row][text_col] = '\0';
text_col = 0;
text_row = (text_row + 1) % text_rows;
if (text_row == text_top) text_top = (text_top + 1) % text_rows;
}
if (*ptr != '\n') text[text_row][text_col++] = *ptr;
}
text[text_row][text_col] = '\0';
update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::StartMenu(const char* const * headers, const char* const * items,
int initial_selection) {
int i;
pthread_mutex_lock(&updateMutex);
if (text_rows > 0 && text_cols > 0) {
for (i = 0; i < text_rows; ++i) {
if (headers[i] == NULL) break;
strncpy(menu[i], headers[i], text_cols-1);
menu[i][text_cols-1] = '\0';
}
menu_top = i;
for (; i < text_rows; ++i) {
if (items[i-menu_top] == NULL) break;
strncpy(menu[i], items[i-menu_top], text_cols-1);
menu[i][text_cols-1] = '\0';
}
menu_items = i - menu_top;
show_menu = 1;
menu_sel = initial_selection;
update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
}
int ScreenRecoveryUI::SelectMenu(int sel) {
int old_sel;
pthread_mutex_lock(&updateMutex);
if (show_menu > 0) {
old_sel = menu_sel;
menu_sel = sel;
if (menu_sel < 0) menu_sel = 0;
if (menu_sel >= menu_items) menu_sel = menu_items-1;
sel = menu_sel;
if (menu_sel != old_sel) update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
return sel;
}
void ScreenRecoveryUI::EndMenu() {
int i;
pthread_mutex_lock(&updateMutex);
if (show_menu > 0 && text_rows > 0 && text_cols > 0) {
show_menu = 0;
update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
}
bool ScreenRecoveryUI::IsTextVisible()
{
pthread_mutex_lock(&updateMutex);
int visible = show_text;
pthread_mutex_unlock(&updateMutex);
return visible;
}
bool ScreenRecoveryUI::WasTextEverVisible()
{
pthread_mutex_lock(&updateMutex);
int ever_visible = show_text_ever;
pthread_mutex_unlock(&updateMutex);
return ever_visible;
}
void ScreenRecoveryUI::ShowText(bool visible)
{
pthread_mutex_lock(&updateMutex);
show_text = visible;
if (show_text) show_text_ever = 1;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
// Return true if USB is connected.
bool ScreenRecoveryUI::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;
}
int ScreenRecoveryUI::WaitKey()
{
pthread_mutex_lock(&key_queue_mutex);
// 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 += 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);
}
} while (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;
}
bool ScreenRecoveryUI::IsKeyPressed(int key)
{
pthread_mutex_lock(&key_queue_mutex);
int pressed = key_pressed[key];
pthread_mutex_unlock(&key_queue_mutex);
return pressed;
}
void ScreenRecoveryUI::FlushKeys() {
pthread_mutex_lock(&key_queue_mutex);
key_queue_len = 0;
pthread_mutex_unlock(&key_queue_mutex);
}
RecoveryUI::KeyAction ScreenRecoveryUI::CheckKey(int key) {
return RecoveryUI::ENQUEUE;
}
