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platform_bootable_recovery/screen_ui.cpp
Luke Song 92eda4db6c vr_ui: drawing changes 
Change drawing of horizontal bars.
Implement image and background drawing.

Bug: 65556996
Test: Viewed graphics test
Change-Id: I68ddd997123607dbebf972af5a455ce8ef0c7075
2017-10-05 12:02:13 -07:00

959 lines
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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 "screen_ui.h"
#include <dirent.h>
#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 <memory>
#include <string>
#include <unordered_map>
#include <vector>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <minui/minui.h>
#include "common.h"
#include "device.h"
#include "ui.h"
// Return the current time as a double (including fractions of a second).
static double now() {
struct timeval tv;
gettimeofday(&tv, nullptr);
return tv.tv_sec + tv.tv_usec / 1000000.0;
}
ScreenRecoveryUI::ScreenRecoveryUI()
: kMarginWidth(RECOVERY_UI_MARGIN_WIDTH),
kMarginHeight(RECOVERY_UI_MARGIN_HEIGHT),
kAnimationFps(RECOVERY_UI_ANIMATION_FPS),
kDensity(static_cast<float>(android::base::GetIntProperty("ro.sf.lcd_density", 160)) / 160.f),
currentIcon(NONE),
progressBarType(EMPTY),
progressScopeStart(0),
progressScopeSize(0),
progress(0),
pagesIdentical(false),
text_cols_(0),
text_rows_(0),
text_(nullptr),
text_col_(0),
text_row_(0),
show_text(false),
show_text_ever(false),
menu_headers_(nullptr),
show_menu(false),
menu_items(0),
menu_sel(0),
file_viewer_text_(nullptr),
intro_frames(0),
loop_frames(0),
current_frame(0),
intro_done(false),
stage(-1),
max_stage(-1),
locale_(""),
rtl_locale_(false),
updateMutex(PTHREAD_MUTEX_INITIALIZER) {}
GRSurface* ScreenRecoveryUI::GetCurrentFrame() const {
if (currentIcon == INSTALLING_UPDATE || currentIcon == ERASING) {
return intro_done ? loopFrames[current_frame] : introFrames[current_frame];
}
return error_icon;
}
GRSurface* ScreenRecoveryUI::GetCurrentText() const {
switch (currentIcon) {
case ERASING:
return erasing_text;
case ERROR:
return error_text;
case INSTALLING_UPDATE:
return installing_text;
case NO_COMMAND:
return no_command_text;
case NONE:
abort();
}
}
int ScreenRecoveryUI::PixelsFromDp(int dp) const {
return dp * kDensity;
}
// Here's the intended layout:
// | portrait large landscape large
// ---------+-------------------------------------------------
// gap |
// icon | (200dp)
// gap | 68dp 68dp 56dp 112dp
// text | (14sp)
// gap | 32dp 32dp 26dp 52dp
// progress | (2dp)
// gap |
// Note that "baseline" is actually the *top* of each icon (because that's how our drawing routines
// work), so that's the more useful measurement for calling code. We use even top and bottom gaps.
enum Layout { PORTRAIT = 0, PORTRAIT_LARGE = 1, LANDSCAPE = 2, LANDSCAPE_LARGE = 3, LAYOUT_MAX };
enum Dimension { TEXT = 0, ICON = 1, DIMENSION_MAX };
static constexpr int kLayouts[LAYOUT_MAX][DIMENSION_MAX] = {
{ 32, 68, }, // PORTRAIT
{ 32, 68, }, // PORTRAIT_LARGE
{ 26, 56, }, // LANDSCAPE
{ 52, 112, }, // LANDSCAPE_LARGE
};
int ScreenRecoveryUI::GetAnimationBaseline() const {
return GetTextBaseline() - PixelsFromDp(kLayouts[layout_][ICON]) - gr_get_height(loopFrames[0]);
}
int ScreenRecoveryUI::GetTextBaseline() const {
return GetProgressBaseline() - PixelsFromDp(kLayouts[layout_][TEXT]) -
gr_get_height(installing_text);
}
int ScreenRecoveryUI::GetProgressBaseline() const {
int elements_sum = gr_get_height(loopFrames[0]) + PixelsFromDp(kLayouts[layout_][ICON]) +
gr_get_height(installing_text) + PixelsFromDp(kLayouts[layout_][TEXT]) +
gr_get_height(progressBarFill);
int bottom_gap = (ScreenHeight() - elements_sum) / 2;
return ScreenHeight() - bottom_gap - gr_get_height(progressBarFill);
}
// Clear the screen and draw the currently selected background icon (if any).
// Should only be called with updateMutex locked.
void ScreenRecoveryUI::draw_background_locked() {
pagesIdentical = false;
gr_color(0, 0, 0, 255);
gr_clear();
if (currentIcon != NONE) {
if (max_stage != -1) {
int stage_height = gr_get_height(stageMarkerEmpty);
int stage_width = gr_get_width(stageMarkerEmpty);
int x = (ScreenWidth() - max_stage * gr_get_width(stageMarkerEmpty)) / 2;
int y = ScreenHeight() - stage_height - kMarginHeight;
for (int i = 0; i < max_stage; ++i) {
GRSurface* stage_surface = (i < stage) ? stageMarkerFill : stageMarkerEmpty;
DrawSurface(stage_surface, 0, 0, stage_width, stage_height, x, y);
x += stage_width;
}
}
GRSurface* text_surface = GetCurrentText();
int text_x = (ScreenWidth() - gr_get_width(text_surface)) / 2;
int text_y = GetTextBaseline();
gr_color(255, 255, 255, 255);
DrawTextIcon(text_x, text_y, text_surface);
}
}
// Draws the animation and progress bar (if any) on the screen. Does not flip pages. Should only be
// called with updateMutex locked.
void ScreenRecoveryUI::draw_foreground_locked() {
if (currentIcon != NONE) {
GRSurface* frame = GetCurrentFrame();
int frame_width = gr_get_width(frame);
int frame_height = gr_get_height(frame);
int frame_x = (ScreenWidth() - frame_width) / 2;
int frame_y = GetAnimationBaseline();
DrawSurface(frame, 0, 0, frame_width, frame_height, frame_x, frame_y);
}
if (progressBarType != EMPTY) {
int width = gr_get_width(progressBarEmpty);
int height = gr_get_height(progressBarEmpty);
int progress_x = (ScreenWidth() - width) / 2;
int progress_y = GetProgressBaseline();
// Erase behind the progress bar (in case this was a progress-only update)
gr_color(0, 0, 0, 255);
DrawFill(progress_x, progress_y, width, height);
if (progressBarType == DETERMINATE) {
float p = progressScopeStart + progress * progressScopeSize;
int pos = static_cast<int>(p * width);
if (rtl_locale_) {
// Fill the progress bar from right to left.
if (pos > 0) {
DrawSurface(progressBarFill, width - pos, 0, pos, height, progress_x + width - pos,
progress_y);
}
if (pos < width - 1) {
DrawSurface(progressBarEmpty, 0, 0, width - pos, height, progress_x, progress_y);
}
} else {
// Fill the progress bar from left to right.
if (pos > 0) {
DrawSurface(progressBarFill, 0, 0, pos, height, progress_x, progress_y);
}
if (pos < width - 1) {
DrawSurface(progressBarEmpty, pos, 0, width - pos, height, progress_x + pos, progress_y);
}
}
}
}
}
void ScreenRecoveryUI::SetColor(UIElement e) const {
switch (e) {
case INFO:
gr_color(249, 194, 0, 255);
break;
case HEADER:
gr_color(247, 0, 6, 255);
break;
case MENU:
case MENU_SEL_BG:
gr_color(0, 106, 157, 255);
break;
case MENU_SEL_BG_ACTIVE:
gr_color(0, 156, 100, 255);
break;
case MENU_SEL_FG:
gr_color(255, 255, 255, 255);
break;
case LOG:
gr_color(196, 196, 196, 255);
break;
case TEXT_FILL:
gr_color(0, 0, 0, 160);
break;
default:
gr_color(255, 255, 255, 255);
break;
}
}
void ScreenRecoveryUI::SelectAndShowBackgroundText(const std::vector<std::string>& locales_entries,
size_t sel) {
SetLocale(locales_entries[sel]);
std::vector<std::string> text_name = { "erasing_text", "error_text", "installing_text",
"installing_security_text", "no_command_text" };
std::unordered_map<std::string, std::unique_ptr<GRSurface, decltype(&free)>> surfaces;
for (const auto& name : text_name) {
GRSurface* text_image = nullptr;
LoadLocalizedBitmap(name.c_str(), &text_image);
if (!text_image) {
Print("Failed to load %s\n", name.c_str());
return;
}
surfaces.emplace(name, std::unique_ptr<GRSurface, decltype(&free)>(text_image, &free));
}
pthread_mutex_lock(&updateMutex);
gr_color(0, 0, 0, 255);
gr_clear();
int text_y = kMarginHeight;
int text_x = kMarginWidth;
int line_spacing = gr_sys_font()->char_height; // Put some extra space between images.
// Write the header and descriptive texts.
SetColor(INFO);
std::string header = "Show background text image";
text_y += DrawTextLine(text_x, text_y, header.c_str(), true);
std::string locale_selection = android::base::StringPrintf(
"Current locale: %s, %zu/%zu", locales_entries[sel].c_str(), sel, locales_entries.size());
const char* instruction[] = { locale_selection.c_str(),
"Use volume up/down to switch locales and power to exit.",
nullptr };
text_y += DrawWrappedTextLines(text_x, text_y, instruction);
// Iterate through the text images and display them in order for the current locale.
for (const auto& p : surfaces) {
text_y += line_spacing;
SetColor(LOG);
text_y += DrawTextLine(text_x, text_y, p.first.c_str(), false);
gr_color(255, 255, 255, 255);
gr_texticon(text_x, text_y, p.second.get());
text_y += gr_get_height(p.second.get());
}
// Update the whole screen.
gr_flip();
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::CheckBackgroundTextImages(const std::string& saved_locale) {
// Load a list of locales embedded in one of the resource files.
std::vector<std::string> locales_entries = get_locales_in_png("installing_text");
if (locales_entries.empty()) {
Print("Failed to load locales from the resource files\n");
return;
}
size_t selected = 0;
SelectAndShowBackgroundText(locales_entries, selected);
FlushKeys();
while (true) {
int key = WaitKey();
if (key == KEY_POWER || key == KEY_ENTER) {
break;
} else if (key == KEY_UP || key == KEY_VOLUMEUP) {
selected = (selected == 0) ? locales_entries.size() - 1 : selected - 1;
SelectAndShowBackgroundText(locales_entries, selected);
} else if (key == KEY_DOWN || key == KEY_VOLUMEDOWN) {
selected = (selected == locales_entries.size() - 1) ? 0 : selected + 1;
SelectAndShowBackgroundText(locales_entries, selected);
}
}
SetLocale(saved_locale);
}
int ScreenRecoveryUI::ScreenWidth() const {
return gr_fb_width();
}
int ScreenRecoveryUI::ScreenHeight() const {
return gr_fb_height();
}
void ScreenRecoveryUI::DrawSurface(GRSurface* surface, int sx, int sy, int w, int h, int dx,
int dy) const {
gr_blit(surface, sx, sy, w, h, dx, dy);
}
int ScreenRecoveryUI::DrawHorizontalRule(int y) const {
gr_fill(0, y + 4, ScreenWidth(), y + 6);
return 8;
}
void ScreenRecoveryUI::DrawHighlightBar(int x, int y, int width, int height) const {
gr_fill(x, y, x + width, y + height);
}
void ScreenRecoveryUI::DrawFill(int x, int y, int w, int h) const {
gr_fill(x, y, w, h);
}
void ScreenRecoveryUI::DrawTextIcon(int x, int y, GRSurface* surface) const {
gr_texticon(x, y, surface);
}
int ScreenRecoveryUI::DrawTextLine(int x, int y, const char* line, bool bold) const {
gr_text(gr_sys_font(), x, y, line, bold);
return char_height_ + 4;
}
int ScreenRecoveryUI::DrawTextLines(int x, int y, const char* const* lines) const {
int offset = 0;
for (size_t i = 0; lines != nullptr && lines[i] != nullptr; ++i) {
offset += DrawTextLine(x, y + offset, lines[i], false);
}
return offset;
}
int ScreenRecoveryUI::DrawWrappedTextLines(int x, int y, const char* const* lines) const {
int offset = 0;
for (size_t i = 0; lines != nullptr && lines[i] != nullptr; ++i) {
// The line will be wrapped if it exceeds text_cols_.
std::string line(lines[i]);
size_t next_start = 0;
while (next_start < line.size()) {
std::string sub = line.substr(next_start, text_cols_ + 1);
if (sub.size() <= text_cols_) {
next_start += sub.size();
} else {
// Line too long and must be wrapped to text_cols_ columns.
size_t last_space = sub.find_last_of(" \t\n");
if (last_space == std::string::npos) {
// No space found, just draw as much as we can
sub.resize(text_cols_);
next_start += text_cols_;
} else {
sub.resize(last_space);
next_start += last_space + 1;
}
}
offset += DrawTextLine(x, y + offset, sub.c_str(), false);
}
}
return offset;
}
static const char* REGULAR_HELP[] = {
"Use volume up/down and power.",
NULL
};
static const char* LONG_PRESS_HELP[] = {
"Any button cycles highlight.",
"Long-press activates.",
NULL
};
// Redraws everything on the screen. Does not flip pages. Should only be called with updateMutex
// locked.
void ScreenRecoveryUI::draw_screen_locked() {
if (!show_text) {
draw_background_locked();
draw_foreground_locked();
return;
}
gr_color(0, 0, 0, 255);
gr_clear();
int y = kMarginHeight;
if (show_menu) {
static constexpr int kMenuIndent = 4;
int x = kMarginWidth + kMenuIndent;
SetColor(INFO);
y += DrawTextLine(x, y, "Android Recovery", true);
std::string recovery_fingerprint =
android::base::GetProperty("ro.bootimage.build.fingerprint", "");
for (const auto& chunk : android::base::Split(recovery_fingerprint, ":")) {
y += DrawTextLine(x, y, chunk.c_str(), false);
}
y += DrawTextLines(x, y, HasThreeButtons() ? REGULAR_HELP : LONG_PRESS_HELP);
SetColor(HEADER);
// Ignore kMenuIndent, which is not taken into account by text_cols_.
y += DrawWrappedTextLines(kMarginWidth, y, menu_headers_);
SetColor(MENU);
y += DrawHorizontalRule(y) + 4;
for (int i = 0; i < menu_items; ++i) {
if (i == menu_sel) {
// Draw the highlight bar.
SetColor(IsLongPress() ? MENU_SEL_BG_ACTIVE : MENU_SEL_BG);
DrawHighlightBar(0, y - 2, ScreenWidth(), char_height_ + 4);
// Bold white text for the selected item.
SetColor(MENU_SEL_FG);
y += DrawTextLine(x, y, menu_[i].c_str(), true);
SetColor(MENU);
} else {
y += DrawTextLine(x, y, menu_[i].c_str(), false);
}
}
y += DrawHorizontalRule(y);
}
// 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.
SetColor(LOG);
int row = text_row_;
size_t count = 0;
for (int ty = ScreenHeight() - kMarginHeight - char_height_; ty >= y && count < text_rows_;
ty -= char_height_, ++count) {
DrawTextLine(kMarginWidth, ty, text_[row], false);
--row;
if (row < 0) row = text_rows_ - 1;
}
}
// 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_foreground_locked(); // Draw only the progress bar and overlays
}
gr_flip();
}
// Keeps the progress bar updated, even when the process is otherwise busy.
void* ScreenRecoveryUI::ProgressThreadStartRoutine(void* data) {
reinterpret_cast<ScreenRecoveryUI*>(data)->ProgressThreadLoop();
return nullptr;
}
void ScreenRecoveryUI::ProgressThreadLoop() {
double interval = 1.0 / kAnimationFps;
while (true) {
double start = now();
pthread_mutex_lock(&updateMutex);
bool redraw = false;
// update the installation animation, if active
// skip this if we have a text overlay (too expensive to update)
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 = true;
}
// 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 = true;
}
}
if (redraw) update_progress_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(static_cast<useconds_t>(delay * 1000000));
}
}
void ScreenRecoveryUI::LoadBitmap(const char* filename, GRSurface** surface) {
int result = res_create_display_surface(filename, surface);
if (result < 0) {
LOG(ERROR) << "couldn't load bitmap " << filename << " (error " << result << ")";
}
}
void ScreenRecoveryUI::LoadLocalizedBitmap(const char* filename, GRSurface** surface) {
int result = res_create_localized_alpha_surface(filename, locale_.c_str(), surface);
if (result < 0) {
LOG(ERROR) << "couldn't load bitmap " << filename << " (error " << result << ")";
}
}
static char** Alloc2d(size_t rows, size_t cols) {
char** result = new char*[rows];
for (size_t i = 0; i < rows; ++i) {
result[i] = new char[cols];
memset(result[i], 0, cols);
}
return result;
}
// Choose the right background string to display during update.
void ScreenRecoveryUI::SetSystemUpdateText(bool security_update) {
if (security_update) {
LoadLocalizedBitmap("installing_security_text", &installing_text);
} else {
LoadLocalizedBitmap("installing_text", &installing_text);
}
Redraw();
}
bool ScreenRecoveryUI::InitTextParams() {
if (gr_init() < 0) {
return false;
}
gr_font_size(gr_sys_font(), &char_width_, &char_height_);
text_rows_ = (ScreenHeight() - kMarginHeight * 2) / char_height_;
text_cols_ = (ScreenWidth() - kMarginWidth * 2) / char_width_;
return true;
}
bool ScreenRecoveryUI::Init(const std::string& locale) {
RecoveryUI::Init(locale);
if (!InitTextParams()) {
return false;
}
// Are we portrait or landscape?
layout_ = (gr_fb_width() > gr_fb_height()) ? LANDSCAPE : PORTRAIT;
// Are we the large variant of our base layout?
if (gr_fb_height() > PixelsFromDp(800)) ++layout_;
text_ = Alloc2d(text_rows_, text_cols_ + 1);
file_viewer_text_ = Alloc2d(text_rows_, text_cols_ + 1);
text_col_ = text_row_ = 0;
// Set up the locale info.
SetLocale(locale);
LoadBitmap("icon_error", &error_icon);
LoadBitmap("progress_empty", &progressBarEmpty);
LoadBitmap("progress_fill", &progressBarFill);
LoadBitmap("stage_empty", &stageMarkerEmpty);
LoadBitmap("stage_fill", &stageMarkerFill);
// Background text for "installing_update" could be "installing update"
// or "installing security update". It will be set after UI init according
// to commands in BCB.
installing_text = nullptr;
LoadLocalizedBitmap("erasing_text", &erasing_text);
LoadLocalizedBitmap("no_command_text", &no_command_text);
LoadLocalizedBitmap("error_text", &error_text);
LoadAnimation();
pthread_create(&progress_thread_, nullptr, ProgressThreadStartRoutine, this);
return true;
}
void ScreenRecoveryUI::LoadAnimation() {
std::unique_ptr<DIR, decltype(&closedir)> dir(opendir("/res/images"), closedir);
dirent* de;
std::vector<std::string> intro_frame_names;
std::vector<std::string> loop_frame_names;
while ((de = readdir(dir.get())) != nullptr) {
int value, num_chars;
if (sscanf(de->d_name, "intro%d%n.png", &value, &num_chars) == 1) {
intro_frame_names.emplace_back(de->d_name, num_chars);
} else if (sscanf(de->d_name, "loop%d%n.png", &value, &num_chars) == 1) {
loop_frame_names.emplace_back(de->d_name, num_chars);
}
}
intro_frames = intro_frame_names.size();
loop_frames = loop_frame_names.size();
// It's okay to not have an intro.
if (intro_frames == 0) intro_done = true;
// But you must have an animation.
if (loop_frames == 0) abort();
std::sort(intro_frame_names.begin(), intro_frame_names.end());
std::sort(loop_frame_names.begin(), loop_frame_names.end());
introFrames = new GRSurface*[intro_frames];
for (size_t i = 0; i < intro_frames; i++) {
LoadBitmap(intro_frame_names.at(i).c_str(), &introFrames[i]);
}
loopFrames = new GRSurface*[loop_frames];
for (size_t i = 0; i < loop_frames; i++) {
LoadBitmap(loop_frame_names.at(i).c_str(), &loopFrames[i]);
}
}
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;
}
progressScopeStart = 0;
progressScopeSize = 0;
progress = 0;
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(progressBarEmpty);
float scale = width * progressScopeSize;
if ((int)(progress * scale) != (int)(fraction * scale)) {
progress = fraction;
update_progress_locked();
}
}
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::SetStage(int current, int max) {
pthread_mutex_lock(&updateMutex);
stage = current;
max_stage = max;
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::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 (*ptr != '\n') text_[text_row_][text_col_++] = *ptr;
}
text_[text_row_][text_col_] = '\0';
update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::Print(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
PrintV(fmt, true, ap);
va_end(ap);
}
void ScreenRecoveryUI::PrintOnScreenOnly(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
PrintV(fmt, false, ap);
va_end(ap);
}
void ScreenRecoveryUI::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 ScreenRecoveryUI::ClearText() {
pthread_mutex_lock(&updateMutex);
text_col_ = 0;
text_row_ = 0;
for (size_t i = 0; i < text_rows_; ++i) {
memset(text_[i], 0, text_cols_ + 1);
}
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::ShowFile(FILE* fp) {
std::vector<off_t> offsets;
offsets.push_back(ftello(fp));
ClearText();
struct stat sb;
fstat(fileno(fp), &sb);
bool show_prompt = false;
while (true) {
if (show_prompt) {
PrintOnScreenOnly("--(%d%% of %d bytes)--",
static_cast<int>(100 * (double(ftello(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(ftello(fp));
}
}
ClearText();
}
int ch = getc(fp);
if (ch == EOF) {
while (text_row_ < text_rows_ - 1) PutChar('\n');
show_prompt = true;
} else {
PutChar(ch);
if (text_col_ == 0 && text_row_ >= text_rows_ - 1) {
show_prompt = true;
}
}
}
}
void ScreenRecoveryUI::ShowFile(const char* filename) {
FILE* fp = fopen_path(filename, "re");
if (fp == nullptr) {
Print(" Unable to open %s: %s\n", filename, strerror(errno));
return;
}
char** old_text = text_;
size_t old_text_col = text_col_;
size_t old_text_row = text_row_;
// Swap in the alternate screen and clear it.
text_ = file_viewer_text_;
ClearText();
ShowFile(fp);
fclose(fp);
text_ = old_text;
text_col_ = old_text_col;
text_row_ = old_text_row;
}
void ScreenRecoveryUI::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;
menu_.clear();
for (size_t i = 0; i < text_rows_ && items[i] != nullptr; ++i) {
menu_.emplace_back(std::string(items[i], strnlen(items[i], text_cols_ - 1)));
}
menu_items = static_cast<int>(menu_.size());
show_menu = true;
menu_sel = initial_selection;
update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
}
int ScreenRecoveryUI::SelectMenu(int sel) {
pthread_mutex_lock(&updateMutex);
if (show_menu) {
int old_sel = menu_sel;
menu_sel = sel;
// Wrap at top and bottom.
if (menu_sel < 0) menu_sel = menu_items - 1;
if (menu_sel >= menu_items) menu_sel = 0;
sel = menu_sel;
if (menu_sel != old_sel) update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
return sel;
}
void ScreenRecoveryUI::EndMenu() {
pthread_mutex_lock(&updateMutex);
if (show_menu && text_rows_ > 0 && text_cols_ > 0) {
show_menu = false;
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 = true;
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::Redraw() {
pthread_mutex_lock(&updateMutex);
update_screen_locked();
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::KeyLongPress(int) {
// Redraw so that if we're in the menu, the highlight
// will change color to indicate a successful long press.
Redraw();
}
void ScreenRecoveryUI::SetLocale(const std::string& new_locale) {
locale_ = new_locale;
rtl_locale_ = false;
if (!new_locale.empty()) {
size_t underscore = new_locale.find('_');
// lang has the language prefix prior to '_', or full string if '_' doesn't exist.
std::string lang = new_locale.substr(0, underscore);
// A bit cheesy: keep an explicit list of supported RTL languages.
if (lang == "ar" || // Arabic
lang == "fa" || // Persian (Farsi)
lang == "he" || // Hebrew (new language code)
lang == "iw" || // Hebrew (old language code)
lang == "ur") { // Urdu
rtl_locale_ = true;
}
}
}
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