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platform_bootable_recovery/wear_ui.cpp
Prashant Malani 7a491225bb recovery: Remove SetColor, and other refactoring for WearUI 
The only difference from SetColor in ScreenRecoveryUI is the that the
LOG messages have slightly different colors. That's not enough to
warrant a duplicate function. So this patch removes SetColor and uses
the parent class version.

This patch also moves the DrawTextLine* functions into ScreenRecoveryUI
since they're mostly the same. It also moves char_width and char_height
into the class instead of keeping them as static variables.

Bug: 27407422
Change-Id: I30428c9433baab8410cf710a01c9b1c44c217bf1
2016-03-11 15:22:20 -08:00

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/*
* Copyright (C) 2014 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 <stdarg.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 <vector>
#include "common.h"
#include "device.h"
#include "wear_ui.h"
#include "cutils/properties.h"
#include "android-base/strings.h"
#include "android-base/stringprintf.h"
// 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 WearRecoveryUI* 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;
}
WearRecoveryUI::WearRecoveryUI() :
progress_bar_height(3),
progress_bar_width(200),
progress_bar_y(259),
outer_height(0),
outer_width(0),
menu_unusable_rows(0),
intro_frames(22),
loop_frames(60),
animation_fps(30),
currentIcon(NONE),
intro_done(false),
current_frame(0),
progressBarType(EMPTY),
progressScopeStart(0),
progressScopeSize(0),
progress(0),
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_items(0),
menu_sel(0) {
for (size_t i = 0; i < 5; i++)
backgroundIcon[i] = NULL;
self = this;
}
// Draw background frame on the screen. Does not flip pages.
// Should only be called with updateMutex locked.
void WearRecoveryUI::draw_background_locked(Icon icon)
{
gr_color(0, 0, 0, 255);
gr_fill(0, 0, gr_fb_width(), gr_fb_height());
if (icon) {
GRSurface* surface;
if (icon == INSTALLING_UPDATE || icon == ERASING) {
if (!intro_done) {
surface = introFrames[current_frame];
} else {
surface = loopFrames[current_frame];
}
}
else {
surface = backgroundIcon[icon];
}
int width = gr_get_width(surface);
int height = gr_get_height(surface);
int x = (gr_fb_width() - width) / 2;
int y = (gr_fb_height() - height) / 2;
gr_blit(surface, 0, 0, width, height, x, y);
}
}
// Draw the progress bar (if any) on the screen. Does not flip pages.
// Should only be called with updateMutex locked.
void WearRecoveryUI::draw_progress_locked()
{
if (currentIcon == ERROR) return;
if (progressBarType != DETERMINATE) return;
int width = progress_bar_width;
int height = progress_bar_height;
int dx = (gr_fb_width() - width)/2;
int dy = progress_bar_y;
float p = progressScopeStart + progress * progressScopeSize;
int pos = (int) (p * width);
gr_color(0x43, 0x43, 0x43, 0xff);
gr_fill(dx, dy, dx + width, dy + height);
if (pos > 0) {
gr_color(0x02, 0xa8, 0xf3, 255);
if (rtl_locale) {
// Fill the progress bar from right to left.
gr_fill(dx + width - pos, dy, dx + width, dy + height);
} else {
// Fill the progress bar from left to right.
gr_fill(dx, dy, dx + pos, dy + height);
}
}
}
static const char* HEADERS[] = {
"Swipe up/down to move.",
"Swipe left/right to select.",
"",
NULL
};
void WearRecoveryUI::draw_screen_locked()
{
draw_background_locked(currentIcon);
draw_progress_locked();
char cur_selection_str[50];
if (show_text) {
SetColor(TEXT_FILL);
gr_fill(0, 0, gr_fb_width(), gr_fb_height());
int y = outer_height;
int x = outer_width;
if (show_menu) {
char recovery_fingerprint[PROPERTY_VALUE_MAX];
property_get("ro.bootimage.build.fingerprint", recovery_fingerprint, "");
SetColor(HEADER);
DrawTextLine(x + 4, &y, "Android Recovery", true);
for (auto& chunk: android::base::Split(recovery_fingerprint, ":")) {
DrawTextLine(x +4, &y, chunk.c_str(), false);
}
// This is actually the help strings.
DrawTextLines(x + 4, &y, HEADERS);
SetColor(HEADER);
DrawTextLines(x + 4, &y, menu_headers_);
// Show the current menu item number in relation to total number if
// items don't fit on the screen.
if (menu_items > menu_end - menu_start) {
sprintf(cur_selection_str, "Current item: %d/%d", menu_sel + 1, menu_items);
gr_text(x+4, y, cur_selection_str, 1);
y += char_height_+4;
}
// Menu begins here
SetColor(MENU);
for (int i = menu_start; i < menu_end; ++i) {
if (i == menu_sel) {
// draw the highlight bar
SetColor(MENU_SEL_BG);
gr_fill(x, y-2, gr_fb_width()-x, y+char_height_+2);
// white text of selected item
SetColor(MENU_SEL_FG);
if (menu[i][0]) gr_text(x+4, y, menu[i], 1);
SetColor(MENU);
} else {
if (menu[i][0]) gr_text(x+4, y, menu[i], 0);
}
y += char_height_+4;
}
SetColor(MENU);
y += 4;
gr_fill(0, y, gr_fb_width(), y+2);
y += 4;
}
SetColor(LOG);
// display from the bottom up, until we hit the top of the
// screen, the bottom of the menu, or we've displayed the
// entire text buffer.
int ty;
int row = (text_top+text_rows-1) % text_rows;
size_t count = 0;
for (int ty = gr_fb_height() - char_height_ - outer_height;
ty > y+2 && count < text_rows;
ty -= char_height_, ++count) {
gr_text(x+4, ty, text[row], 0);
--row;
if (row < 0) row = text_rows-1;
}
}
}
void WearRecoveryUI::update_screen_locked()
{
draw_screen_locked();
gr_flip();
}
// Keeps the progress bar updated, even when the process is otherwise busy.
void* WearRecoveryUI::progress_thread(void *cookie) {
self->progress_loop();
return NULL;
}
void WearRecoveryUI::progress_loop() {
double interval = 1.0 / animation_fps;
for (;;) {
double start = now();
pthread_mutex_lock(&updateMutex);
int redraw = 0;
if ((currentIcon == INSTALLING_UPDATE || currentIcon == ERASING)
&& !show_text) {
if (!intro_done) {
if (current_frame == intro_frames - 1) {
intro_done = true;
current_frame = 0;
} else {
current_frame++;
}
} else {
current_frame = (current_frame + 1) % loop_frames;
}
redraw = 1;
}
// move the progress bar forward on timed intervals, if configured
int duration = progressScopeDuration;
if (progressBarType == DETERMINATE && duration > 0) {
double elapsed = now() - progressScopeTime;
float p = 1.0 * elapsed / duration;
if (p > 1.0) p = 1.0;
if (p > progress) {
progress = p;
redraw = 1;
}
}
if (redraw)
update_screen_locked();
pthread_mutex_unlock(&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));
}
}
void WearRecoveryUI::Init()
{
gr_init();
gr_font_size(&char_width_, &char_height_);
text_col = text_row = 0;
text_rows = (gr_fb_height()) / char_height_;
visible_text_rows = (gr_fb_height() - (outer_height * 2)) / char_height_;
if (text_rows > kMaxRows) text_rows = kMaxRows;
text_top = 1;
text_cols = (gr_fb_width() - (outer_width * 2)) / char_width_;
if (text_cols > kMaxCols - 1) text_cols = kMaxCols - 1;
LoadBitmap("icon_installing", &backgroundIcon[INSTALLING_UPDATE]);
backgroundIcon[ERASING] = backgroundIcon[INSTALLING_UPDATE];
LoadBitmap("icon_error", &backgroundIcon[ERROR]);
backgroundIcon[NO_COMMAND] = backgroundIcon[ERROR];
introFrames = (GRSurface**)malloc(intro_frames * sizeof(GRSurface*));
for (int i = 0; i < intro_frames; ++i) {
char filename[40];
sprintf(filename, "intro%02d", i);
LoadBitmap(filename, introFrames + i);
}
loopFrames = (GRSurface**)malloc(loop_frames * sizeof(GRSurface*));
for (int i = 0; i < loop_frames; ++i) {
char filename[40];
sprintf(filename, "loop%02d", i);
LoadBitmap(filename, loopFrames + i);
}
pthread_create(&progress_t, NULL, progress_thread, NULL);
RecoveryUI::Init();
}
void WearRecoveryUI::SetBackground(Icon icon)
{
pthread_mutex_lock(&updateMutex);
currentIcon = icon;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
void WearRecoveryUI::SetProgressType(ProgressType type)
{
pthread_mutex_lock(&updateMutex);
if (progressBarType != type) {
progressBarType = type;
}
progressScopeStart = 0;
progressScopeSize = 0;
progress = 0;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
void WearRecoveryUI::ShowProgress(float portion, float seconds)
{
pthread_mutex_lock(&updateMutex);
progressBarType = DETERMINATE;
progressScopeStart += progressScopeSize;
progressScopeSize = portion;
progressScopeTime = now();
progressScopeDuration = seconds;
progress = 0;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
void WearRecoveryUI::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 = progress_bar_width;
float scale = width * progressScopeSize;
if ((int) (progress * scale) != (int) (fraction * scale)) {
progress = fraction;
update_screen_locked();
}
}
pthread_mutex_unlock(&updateMutex);
}
void WearRecoveryUI::SetStage(int current, int max)
{
}
void WearRecoveryUI::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 WearRecoveryUI::StartMenu(const char* const * headers, const char* const * items,
int initial_selection) {
pthread_mutex_lock(&updateMutex);
if (text_rows > 0 && text_cols > 0) {
menu_headers_ = headers;
size_t i = 0;
// "i < text_rows" is removed from the loop termination condition,
// which is different from the one in ScreenRecoveryUI::StartMenu().
// Because WearRecoveryUI supports scrollable menu, it's fine to have
// more entries than text_rows. The menu may be truncated otherwise.
// Bug: 23752519
for (; items[i] != nullptr; i++) {
strncpy(menu[i], items[i], text_cols - 1);
menu[i][text_cols - 1] = '\0';
}
menu_items = i;
show_menu = 1;
menu_sel = initial_selection;
menu_start = 0;
menu_end = visible_text_rows - 1 - menu_unusable_rows;
if (menu_items <= menu_end)
menu_end = menu_items;
update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
}
int WearRecoveryUI::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;
if (menu_sel < menu_start) {
menu_start--;
menu_end--;
} else if (menu_sel >= menu_end && menu_sel < menu_items) {
menu_end++;
menu_start++;
}
sel = menu_sel;
if (menu_sel != old_sel) update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
return sel;
}
void WearRecoveryUI::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 WearRecoveryUI::IsTextVisible()
{
pthread_mutex_lock(&updateMutex);
int visible = show_text;
pthread_mutex_unlock(&updateMutex);
return visible;
}
bool WearRecoveryUI::WasTextEverVisible()
{
pthread_mutex_lock(&updateMutex);
int ever_visible = show_text_ever;
pthread_mutex_unlock(&updateMutex);
return ever_visible;
}
void WearRecoveryUI::ShowText(bool visible)
{
pthread_mutex_lock(&updateMutex);
// Don't show text during ota install or factory reset
if (currentIcon == INSTALLING_UPDATE || currentIcon == ERASING) {
pthread_mutex_unlock(&updateMutex);
return;
}
show_text = visible;
if (show_text) show_text_ever = 1;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
void WearRecoveryUI::Redraw()
{
pthread_mutex_lock(&updateMutex);
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
void WearRecoveryUI::ShowFile(FILE* fp) {
std::vector<long> offsets;
offsets.push_back(ftell(fp));
ClearText();
struct stat sb;
fstat(fileno(fp), &sb);
bool show_prompt = false;
while (true) {
if (show_prompt) {
Print("--(%d%% of %d bytes)--",
static_cast<int>(100 * (double(ftell(fp)) / double(sb.st_size))),
static_cast<int>(sb.st_size));
Redraw();
while (show_prompt) {
show_prompt = false;
int key = WaitKey();
if (key == KEY_POWER || key == KEY_ENTER) {
return;
} else if (key == KEY_UP || key == KEY_VOLUMEUP) {
if (offsets.size() <= 1) {
show_prompt = true;
} else {
offsets.pop_back();
fseek(fp, offsets.back(), SEEK_SET);
}
} else {
if (feof(fp)) {
return;
}
offsets.push_back(ftell(fp));
}
}
ClearText();
}
int ch = getc(fp);
if (ch == EOF) {
text_row = text_top = text_rows - 2;
show_prompt = true;
} else {
PutChar(ch);
if (text_col == 0 && text_row >= text_rows - 2) {
text_top = text_row;
show_prompt = true;
}
}
}
}
void WearRecoveryUI::PutChar(char ch) {
pthread_mutex_lock(&updateMutex);
if (ch != '\n') text[text_row][text_col++] = ch;
if (ch == '\n' || text_col >= text_cols) {
text_col = 0;
++text_row;
}
pthread_mutex_unlock(&updateMutex);
}
void WearRecoveryUI::ShowFile(const char* filename) {
FILE* fp = fopen_path(filename, "re");
if (fp == nullptr) {
Print(" Unable to open %s: %s\n", filename, strerror(errno));
return;
}
ShowFile(fp);
fclose(fp);
}
void WearRecoveryUI::ClearText() {
pthread_mutex_lock(&updateMutex);
text_col = 0;
text_row = 0;
text_top = 1;
for (size_t i = 0; i < text_rows; ++i) {
memset(text[i], 0, text_cols + 1);
}
pthread_mutex_unlock(&updateMutex);
}
void WearRecoveryUI::PrintOnScreenOnly(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
PrintV(fmt, false, ap);
va_end(ap);
}
void WearRecoveryUI::PrintV(const char* fmt, bool copy_to_stdout, va_list ap) {
std::string str;
android::base::StringAppendV(&str, fmt, ap);
if (copy_to_stdout) {
fputs(str.c_str(), stdout);
}
pthread_mutex_lock(&updateMutex);
if (text_rows > 0 && text_cols > 0) {
for (const char* ptr = str.c_str(); *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);
}
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