Add an alternate screen for viewing recovery logs.
This makes it easier to go back and forth without losing current output.
Also make the display more like regular more(1).
Bug: http://b/20834540
Change-Id: Icc5703e9c8a378cc7072d8ebb79e34451267ee1b
(cherry picked from commit c049163234003ef463bca018920622bc8269c69b)
diff --git a/screen_ui.cpp b/screen_ui.cpp
index 5e73d37..ff95915 100644
--- a/screen_ui.cpp
+++ b/screen_ui.cpp
@@ -58,18 +58,19 @@
progressScopeSize(0),
progress(0),
pagesIdentical(false),
- text(nullptr),
- text_cols(0),
- text_rows(0),
- text_col(0),
- text_row(0),
- text_top(0),
+ text_cols_(0),
+ text_rows_(0),
+ text_(nullptr),
+ text_col_(0),
+ text_row_(0),
+ text_top_(0),
show_text(false),
show_text_ever(false),
- menu(nullptr),
+ menu_(nullptr),
show_menu(false),
menu_items(0),
menu_sel(0),
+ file_viewer_text_(nullptr),
animation_fps(20),
installing_frames(-1),
stage(-1),
@@ -255,7 +256,7 @@
DrawTextLines(&y, HasThreeButtons() ? REGULAR_HELP : LONG_PRESS_HELP);
SetColor(HEADER);
- DrawTextLines(&y, menu_headers);
+ DrawTextLines(&y, menu_headers_);
SetColor(MENU);
DrawHorizontalRule(&y);
@@ -267,10 +268,10 @@
gr_fill(0, y - 2, gr_fb_width(), y + char_height + 2);
// Bold white text for the selected item.
SetColor(MENU_SEL_FG);
- gr_text(4, y, menu[i], true);
+ gr_text(4, y, menu_[i], true);
SetColor(MENU);
} else {
- gr_text(4, y, menu[i], false);
+ gr_text(4, y, menu_[i], false);
}
y += char_height + 4;
}
@@ -281,14 +282,14 @@
// screen, the bottom of the menu, or we've displayed the
// entire text buffer.
SetColor(LOG);
- int row = (text_top+text_rows-1) % text_rows;
+ int row = (text_top_ + text_rows_ - 1) % text_rows_;
size_t count = 0;
for (int ty = gr_fb_height() - char_height;
- ty >= y && count < text_rows;
+ ty >= y && count < text_rows_;
ty -= char_height, ++count) {
- gr_text(0, ty, text[row], false);
+ gr_text(0, ty, text_[row], false);
--row;
- if (row < 0) row = text_rows-1;
+ if (row < 0) row = text_rows_ - 1;
}
}
}
@@ -391,14 +392,15 @@
gr_init();
gr_font_size(&char_width, &char_height);
- text_rows = gr_fb_height() / char_height;
- text_cols = gr_fb_width() / char_width;
+ text_rows_ = gr_fb_height() / char_height;
+ text_cols_ = gr_fb_width() / char_width;
- text = Alloc2d(text_rows, text_cols + 1);
- menu = Alloc2d(text_rows, text_cols + 1);
+ text_ = Alloc2d(text_rows_, text_cols_ + 1);
+ file_viewer_text_ = Alloc2d(text_rows_, text_cols_ + 1);
+ menu_ = Alloc2d(text_rows_, text_cols_ + 1);
- text_col = text_row = 0;
- text_top = 1;
+ text_col_ = text_row_ = 0;
+ text_top_ = 1;
backgroundIcon[NONE] = nullptr;
LoadBitmapArray("icon_installing", &installing_frames, &installation);
@@ -514,17 +516,17 @@
fputs(buf, stdout);
pthread_mutex_lock(&updateMutex);
- if (text_rows > 0 && text_cols > 0) {
+ if (text_rows_ > 0 && text_cols_ > 0) {
for (const char* 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_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;
+ if (*ptr != '\n') text_[text_row_][text_col_++] = *ptr;
}
- text[text_row][text_col] = '\0';
+ text_[text_row_][text_col_] = '\0';
update_screen_locked();
}
pthread_mutex_unlock(&updateMutex);
@@ -532,21 +534,23 @@
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;
+ if (ch != '\n') text_[text_row_][text_col_++] = ch;
+ if (ch == '\n' || text_col_ >= text_cols_) {
+ text_col_ = 0;
+ ++text_row_;
+
+ if (text_row_ == text_top_) text_top_ = (text_top_ + 1) % text_rows_;
}
pthread_mutex_unlock(&updateMutex);
}
void ScreenRecoveryUI::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);
+ 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);
}
@@ -590,12 +594,11 @@
int ch = getc(fp);
if (ch == EOF) {
- text_row = text_top = text_rows - 2;
+ while (text_row_ < text_rows_ - 1) PutChar('\n');
show_prompt = true;
} else {
PutChar(ch);
- if (text_col == 0 && text_row >= text_rows - 2) {
- text_top = text_row;
+ if (text_col_ == 0 && text_row_ >= text_rows_ - 1) {
show_prompt = true;
}
}
@@ -608,19 +611,34 @@
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_;
+ size_t old_text_top = text_top_;
+
+ // 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;
+ text_top_ = old_text_top;
}
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;
+ if (text_rows_ > 0 && text_cols_ > 0) {
+ menu_headers_ = headers;
size_t i = 0;
- for (; i < text_rows && items[i] != nullptr; ++i) {
- strncpy(menu[i], items[i], text_cols-1);
- menu[i][text_cols-1] = '\0';
+ for (; i < text_rows_ && items[i] != nullptr; ++i) {
+ strncpy(menu_[i], items[i], text_cols_ - 1);
+ menu_[i][text_cols_ - 1] = '\0';
}
menu_items = i;
show_menu = true;
@@ -649,7 +667,7 @@
void ScreenRecoveryUI::EndMenu() {
pthread_mutex_lock(&updateMutex);
- if (show_menu && text_rows > 0 && text_cols > 0) {
+ if (show_menu && text_rows_ > 0 && text_cols_ > 0) {
show_menu = false;
update_screen_locked();
}