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screen.cpp
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screen.cpp
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
#include "screen.h"
#include "event_formatter.h"
#include "kill_event_formatter.h"
#include "../logging/easylogging++.h"
#include "../common/telemetry.h"
#include <version.h>
#include <chrono>
#include <thread>
#include <set>
Screen::Screen()
{
totalLines = 0;
currentLine = 1;
currentPage = 0;
totalEvents = 0;
}
#define MAX_BUFFER 128
Screen::~Screen() { }
void Screen::InitializeFormatters()
{
// reserve enough space assuming we will have one formatter per syscall
formatters.reserve(335);
// ALWAYS keep the default formatter in the first slot of vector.
EventFormatter* default_formatter = new EventFormatter;
default_formatter->Initialize("", configPtr.get());
formatters.push_back(default_formatter);
// Formatter for the kill syscall
KillEventFormatter* kill = new KillEventFormatter;
kill->Initialize("kill", configPtr.get());
formatters.push_back(kill);
}
void Screen::initScreen(std::shared_ptr<ProcmonConfiguration> config)
{
configPtr = config;
InitializeFormatters();
root = initscr(); // start curses mode
start_color(); // start color mode
raw(); // Line buffering disabled
noecho(); // disable character echo
halfdelay(1);
nodelay(stdscr, true); // make user input nonblocking
curs_set(0); // turn off cursor on UI
mousemask(ALL_MOUSE_EVENTS, NULL); // get all mouse events
getmaxyx(stdscr, screenH, screenW); // get initial screen size
// calculate column height for initial screen size
columnHeight = screenH - HEADER_HEIGHT - FOOTER_HEIGHT;
// calculate the total number of lines on the screen
totalLines = columnHeight - 1;
// calculate the number of events we need to ingest before we can turn off refresh
eventRefreshThreshold = totalLines * 1000;
// initialize colors for ncurses
initColors();
// set filter control to false for default no filter
filterPromptActive = false;
searchPromptActive = false;
searchCount = 0;
filter = "";
LOG(INFO) << "ScreenH:" << screenH << "ScreenW:" << screenW << "Column Height:" << columnHeight;
// start initializing UI components
initHeader();
initFooter();
initDetailView();
initColumnView();
initStatView();
initHelpView();
initTimestampColumn();
initPidColumn();
initProcessColumn();
initOperationColumn();
initResultColumn();
initDurationColumn();
initDetailColumn();
// draw everything to screen
refreshScreen();
}
void Screen::run()
{
int input, prevInput = 0;
bool running = true;
ProcmonConfiguration * config = configPtr.get();
auto storageEngine = config->GetStorage();
MEVENT mouseEvent;
int scrollCount = 0;
std::chrono::_V2::steady_clock::time_point previousTime = std::chrono::steady_clock::now();
std::chrono::_V2::steady_clock::time_point currentTime;
int nonRefreshCount = 0;
int64_t duration = 0;
LOG(INFO) << "Starting main UI thread";
LOG(INFO) << "Event Threshold:" << eventRefreshThreshold;
LOG(INFO) << "Tracing Events:" << config->events.size();
// check to see if we are loading a trace file
if(config->GetTraceFilePath().compare("") != 0)
{
std::tuple<uint64_t, std::string> startTime; // start time of previous trace to be loaded from file
// stop tracer
config->GetTracer()->SetRunState(TRACER_STOP);
// clear what was inserted into datastore
if(!storageEngine->Clear())
{
LOG(ERROR) << "Database failed to clear";
return;
}
// load up database file
try
{
startTime = storageEngine->Load(config->GetTraceFilePath());
}
catch(const std::runtime_error& e)
{
// something has gone wrong in loading the DB file. Report back to user and exit procmon
LOG(ERROR) << e.what();
shutdownScreen();
std::cerr << "Failed to load tracefile " << config->GetTraceFilePath() << " with error: " << e.what();
exit(-1);
}
if(std::get<0>(startTime) == 0)
{
LOG(ERROR) << "Failed to load trace file" << config->GetTraceFilePath();
return;
}
// update config start time so that all timestamps are visualized correctly
config->SetStartTime(std::get<0>(startTime));
config->SetEpocStartTime(std::get<1>(startTime));
}
// run main UI loop
while(running)
{
// read from user
input = getUserInput();
// if we have an active filter echo
if(filterPromptActive)
{
// check to see if user has entered something new
if(input != ERR)
{
if(input >= ' ' && input <= '~') // all printable ASCII characters
{
filter += (char)input;
// update footer
drawFilterPrompt(filter);
prevInput = input;
}
else
{
switch(input)
{
case KEY_DC:
case KEY_BACKSPACE:
if(filter.size() > 0)
{
filter.pop_back();
drawFilterPrompt(filter);
}
// query datastore and print to screen
break;
case 27: // Esc Key
filterPromptActive = false;
filter = "";
drawFooterFkeys();
// display events with no filter on from current page
eventList = storageEngine->QueryByEventsinPage(config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
displayEvents(eventList);
break;
case KEY_F(9):
running = false;
break;
case KEY_ENTER:
case 10:
drawFooterFkeys();
filterPromptActive = false;
break;
}
}
}
else
{
// if we have read nothing this cycle but a KEY_RESIZE was on the last iteration the user has stopped moving the terminal
if(prevInput == KEY_RESIZE)
{
resize();
// refill page with filtered events
if(filter.size() > 0) eventList = storageEngine->QueryByFilteredEventsinPage(filter, config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
else eventList = storageEngine->QueryByEventsinPage(config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
// display current page
displayEvents(eventList);
}
else if(((prevInput >= ' ' && prevInput <= '~') || (prevInput == KEY_DC || prevInput == KEY_BACKSPACE)) && filter.size() > 0)
{
// query datastore and print to screen
eventList = storageEngine->QueryByFilteredEventsinPage(filter, config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
displayEvents(eventList);
}
}
}
else if(searchPromptActive)
{
// check to see if user has entered something new
if(input != ERR)
{
if(input >= ' ' && input <= '~') // all printable ASCII characters
{
// update search
filter += (char)input;
// reset search count
searchCount = 0;
// update footer
drawSearchPrompt(filter, false);
prevInput = input;
}
else
{
switch(input)
{
case KEY_DC:
case KEY_BACKSPACE:
if(filter.size() > 0)
{
// delete character from search
filter.pop_back();
// if we have an empty filter clear idlist and turn off search highlight
if(filter.size() == 0)
{
idList.clear();
setLineColor(currentLine, HIGHLIGHT_COLOR);
}
// reset search count
searchCount = 0;
// update footer
drawSearchPrompt(filter, false);
}
else
{
// we have an empty search query move currentline to top of page and highlight normally
setLineColor(currentLine, LINE_COLOR);
currentLine = 1;
setLineColor(currentLine, HIGHLIGHT_COLOR);
idList.clear();
}
break;
case 27: // Esc Key
searchPromptActive = false;
filter = "";
idList.clear();
drawFooterFkeys();
// reset line highlight to normal
setLineColor(currentLine, HIGHLIGHT_COLOR);
break;
case KEY_F(3):
searchCount++;
displaySearchEvents(idList, searchCount);
LOG(INFO) << "idList Size: " << idList.size() << " searchCount: " << searchCount;
break;
case KEY_F(9):
running = false;
break;
case KEY_ENTER:
case 10: // Enter Key
drawFooterFkeys();
searchPromptActive = false;
break;
}
}
}
else
{
// if we have read nothing this cycle but a KEY_RESIZE was on the last iteration the user has stopped moving the terminal
if(prevInput == KEY_RESIZE) {
resize();
// refill page with events
eventList = storageEngine->QueryByEventsinPage(config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
displayEvents(eventList);
// display current iteration of search
displaySearchEvents(idList, searchCount);
}
// check to make sure that user has stopped entering into prompt
else if(((prevInput >= ' ' && prevInput <= '~') || (prevInput == KEY_DC || prevInput == KEY_BACKSPACE)) && filter.size() > 0)
{
// query datastore for matching event ids and move to line
idList = storageEngine->QueryIdsBySearch(filter, config->pids, screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
LOG(INFO) << "Search returned" << idList.size() << "results";
// display search event
displaySearchEvents(idList, searchCount);
}
}
}
else {
switch(input)
{
// Handle scrolling events
case KEY_UP:
if(columnSortViewActive) columnScrollUp();
else if (detailViewActive) break;
else scrollUp();
break;
case KEY_DOWN:
if(columnSortViewActive) columnScrollDown();
else if (detailViewActive) break;
else scrollDown();
break;
case KEY_PPAGE:
if (scrollCount < MAX_CONTINUOUS_SCROLL || prevInput != KEY_PPAGE)
{
pageUp();
(KEY_PPAGE == prevInput) ? scrollCount++ : scrollCount = 0;
if(detailViewActive) closeDetailView();
}
break;
case KEY_NPAGE:
if (scrollCount < MAX_CONTINUOUS_SCROLL || prevInput != KEY_NPAGE)
{
pageDown();
(KEY_NPAGE == prevInput) ? scrollCount++ : scrollCount = 0;
if(detailViewActive) closeDetailView();
}
break;
// ncurses key_enter or ascii value 10 for enter key
case KEY_ENTER:
case 10:
if (detailViewActive) closeDetailView();
else if (!columnSortViewActive) showDetailView();
else if (columnSortViewActive) {
closeColumnView();
toggleColumnSort((ScreenConfiguration::sort)columnSortLineSelection);
}
break;
// Handle function key events
case KEY_F(1):
if(helpViewActive) closeHelpView();
else showHelpView();
break;
case KEY_F(2):
if (columnSortViewActive) closeColumnView();
else if (!detailViewActive) showColumnView();
break;
case KEY_F(3):
searchPromptActive = true;
drawSearchPrompt(filter, false);
break;
case KEY_F(4):
filterPromptActive = true;
drawFilterPrompt(filter);
break;
case KEY_F(5):
// is procmon currently in suspended mode and we have not opened a trace file
if(config->GetTracer()->GetRunState() == TRACER_SUSPENDED && config->GetTraceFilePath().compare("") == 0)
{
config->GetTracer()->SetRunState(TRACER_RUNNING);
}
else
{
config->GetTracer()->SetRunState(TRACER_SUSPENDED);
}
drawFooterFkeys();
break;
case KEY_F(6):
// only export if we have generated a new tracefile and not opened one
if(config->GetTraceFilePath().compare("") == 0)
{
storageEngine->Export(std::make_tuple(config->GetStartTime(), config->GetEpocStartTime()), config->GetOutputTraceFilePath());
}
break;
case KEY_F(8):
if(statViewActive) closeStatView();
else showStatView();
break;
// Quit Procmon
case 'q':
case KEY_F(9):
running = false;
break;
// Esc Key
case 27:
// close any view open
if (detailViewActive) closeDetailView();
else if (columnSortViewActive) closeColumnView();
else if (filterPromptActive) filterPromptActive = false;
else if (searchPromptActive) searchPromptActive = false;
else if (statViewActive) closeStatView();
else if (helpViewActive) closeHelpView();
drawFooterFkeys();
break;
// handle mouse events
case KEY_MOUSE:
if(getmouse(&mouseEvent) == OK) handleMouseEvent(&mouseEvent);
if(detailViewActive) showDetailView();
break;
// CTRL + END
case 530:
// if the number of events is evenly divisible then the last "page" has nothing to visualize
if (storageEngine->Size() % totalLines == 0)
{
currentPage = storageEngine->Size() / totalLines - 1;
}
else
{
currentPage = storageEngine->Size() / totalLines;
}
filter = "";
// get last page of events
eventList = storageEngine->QueryByEventsinPage(config->pids, currentPage, getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
displayEvents(eventList);
break;
// CTRL + HOME
case 535:
currentPage = 0;
// get first page of events
eventList = storageEngine->QueryByEventsinPage(config->pids, currentPage, getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
displayEvents(eventList);
break;
// no character was read this iteration
case ERR:
{
// if we have read nothing this cycle but a KEY_RESIZE was on the last iteration the user has stopped moving the terminal
if(prevInput == KEY_RESIZE) {
resize();
// refill page with filtered events
if(filter.size() > 0) eventList = storageEngine->QueryByFilteredEventsinPage(filter, config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
else eventList = storageEngine->QueryByEventsinPage(config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
displayEvents(eventList);
}
break;
}
default:
if (input != ERR)
LOG(INFO) << "Not in switch statement" << input;
}
}
// save previous key to prevent scrolling of death
prevInput = input;
duration = std::chrono::duration_cast<std::chrono::milliseconds>((currentTime = std::chrono::steady_clock::now()) - previousTime).count();
if((filter.size() == 0) && // is there no active filter or search?
(duration > 1000)) // 1 second refresh on events
{
// attempt refresh only if under max tries or if the current page is not full
if(nonRefreshCount < MAX_REFRESH_ATTEMPTS || (totalEvents < getTotalLines() && config->GetTracer()->GetRunState() == TRACER_RUNNING))
{
// check if there are any changes that need to be displayed
auto newEventList = storageEngine->QueryByEventsinPage(config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
int i = 0;
LOG(INFO) << "New Eventlist Size" << newEventList.size();
if(newEventList.size() > eventList.size())
{
eventList.clear();
eventList = newEventList;
displayEvents(eventList);
nonRefreshCount = 0;
}
else
{
for(; i < newEventList.size(); i++)
{
if(newEventList[i] != eventList[i])
{
eventList.clear();
eventList = newEventList;
displayEvents(eventList);
nonRefreshCount = 0;
}
}
// if we have iterated over the entire list then no refresh is needed
if(i >= newEventList.size())
{
LOG(DEBUG) << "No refresh needed";
nonRefreshCount++;
}
}
}
previousTime = currentTime;
}
// draw events in datastore to screen
windowPrintFillRight(headerWin, HEADER_COLOR, 0, HEADER_HEIGHT-1, "%-22s%10d%-5s", config->GetEpocStartTime().c_str(), storageEngine->Size(), "");
// refresh entire window
refreshScreen();
// sleep UI thread for 10ms
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
}
void Screen::shutdownScreen()
{
// delete all windows created
delwin(headerWin);
delwin(footerWin);
delwin(detailWin);
delwin(statWin);
delwin(helpWin);
// delete all columns created
timeStampColumn->~Column();
pidColumn->~Column();
processColumn->~Column();
operationColumn->~Column();
resultColumn->~Column();
durationColumn->~Column();
detailColumn->~Column();
// free formatters
for (std::vector<EventFormatter*>::iterator it = formatters.begin() ; it != formatters.end(); ++it)
{
free((*it));
}
// end curses mode
endwin();
}
int Screen::getUserInput()
{
return wgetch(headerWin);
}
void Screen::initColors()
{
init_pair(HEADER_COLOR, COLOR_BLACK, COLOR_WHITE);
init_pair(MENU_COLOR, COLOR_BLACK, LIGHT_BLUE);
init_pair(COLUMN_HEADER_COLOR, COLOR_BLACK, BLUE);
init_pair(LINE_COLOR, COLOR_WHITE, COLOR_BLACK);
init_pair(HIGHLIGHT_COLOR, COLOR_BLACK, COLOR_CYAN);
init_pair(SEARCH_HIGHLIGHT_COLOR, COLOR_BLACK, COLOR_YELLOW);
init_pair(MENU_COLOR_ERROR, COLOR_RED, LIGHT_BLUE);
}
void Screen::initHeader()
{
// create header window and panel
headerWin = newwin(HEADER_HEIGHT, screenW, HEADER_Y, HEADER_X);
headerPanel = new_panel(headerWin);
// draw header to screen
drawHeader();
}
void Screen::drawHeader()
{
if(headerWin == NULL)
{
LOG(ERROR) << "Header must be initialized before you can draw it to the screen";
exit(1);
}
// set background of window
wbkgdset(headerWin, COLOR_PAIR(HEADER_COLOR));
windowPrintFillRight(headerWin, HEADER_COLOR, 0, 0, "%-15s%10s%-5s", "Start Time:", "", "Total Events:");
// move cursor to beginning of window
wmove(headerWin, 0, 0);
// write header to screen
wprintw(headerWin, ">>> ProcessMonitor (preview) <<<");
// enable fkeys on header window
keypad(headerWin, true);
// refresh header window
wrefresh(headerWin);
}
void Screen::initFooter()
{
footerWin = newwin(FOOTER_HEIGHT, screenW, screenH - 1, FOOTER_X);
footerPanel = new_panel(footerWin);
// print f-key controls
drawFooterFkeys();
}
void Screen::drawFooterFkeys()
{
// move cursor to beginning of window
wmove(footerWin, 0, 0);
// set background of window
wbkgdset(footerWin, COLOR_PAIR(MENU_COLOR));
// setup window colors
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
// Add function key labels
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F1");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Help");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F2");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Sort By");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F3");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Search");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F4");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Filter");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F5");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
if(configPtr->GetTracer()->GetRunState() == TRACER_RUNNING)
{
wprintw(footerWin, " Suspend");
}
else
{
wprintw(footerWin, " Resume");
}
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F6");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Export");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F8");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Stats");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F9");
windowPrintFill(footerWin, MENU_COLOR, getcurx(footerWin), 0, " Quit");
// refresh footer window
wrefresh(footerWin);
}
void Screen::drawFilterPrompt(std::string filter)
{
// move cursor to beginning of window
wmove(footerWin, 0, 0);
// add filter labels
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " Enter");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Done");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " Esc");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Clear ");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " ");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Filter: ");
// add filter prompt
windowPrintFill(footerWin, MENU_COLOR, getcurx(footerWin), 0, "%s", filter.c_str());
// refresh footer window
wrefresh(footerWin);
}
void Screen::drawSearchPrompt(std::string search, bool error)
{
// move cursor to beginning of window
wmove(footerWin, 0, 0);
// add filter labels
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " F3");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Next");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " Esc");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Cancel ");
wattron(footerWin, COLOR_PAIR(LINE_COLOR));
wprintw(footerWin, " ");
wattron(footerWin, COLOR_PAIR(MENU_COLOR));
wprintw(footerWin, " Search: ");
// add filter prompt
if(error) windowPrintFill(footerWin, MENU_COLOR_ERROR, getcurx(footerWin), 0, "%s", filter.c_str());
else windowPrintFill(footerWin, MENU_COLOR, getcurx(footerWin), 0, "%s", filter.c_str());
// refresh footer window
wrefresh(footerWin);
}
void Screen::initTimestampColumn()
{
timeStampColumn = new Column(columnHeight, DEFAULT_TIME_COL_WIDTH, HEADER_HEIGHT, 0, " Timestamp");
columnMap[ScreenConfiguration::time] = timeStampColumn;
// toggle header highlight based on screen configuration
if(screenConfig.getColumnSort() == ScreenConfiguration::time) timeStampColumn->toggleHeaderHighlight();
}
void Screen::initPidColumn()
{
pidColumn = new Column(columnHeight, DEFAULT_PID_COL_WIDTH, HEADER_HEIGHT, DEFAULT_PID_COL_X, " PID");
columnMap[ScreenConfiguration::pid] = pidColumn;
// toggle header highlight based on screen configuration
if(screenConfig.getColumnSort() == ScreenConfiguration::pid) pidColumn->toggleHeaderHighlight();
}
void Screen::initProcessColumn()
{
processColumn = new Column(columnHeight, DEFAULT_PROCESS_COL_WIDTH, HEADER_HEIGHT, DEFAULT_PROCESS_COL_X, " Process");
columnMap[ScreenConfiguration::process] = processColumn;
// toggle header highlight based on screen configuration
if(screenConfig.getColumnSort() == ScreenConfiguration::process) processColumn->toggleHeaderHighlight();
}
void Screen::initOperationColumn()
{
operationColumn = new Column(columnHeight, DEFAULT_OPERATION_COL_WIDTH, HEADER_HEIGHT, DEFAULT_OPERATION_COL_X, " Operation");
columnMap[ScreenConfiguration::operation] = operationColumn;
// toggle header highlight based on screen configuration
if(screenConfig.getColumnSort() == ScreenConfiguration::operation) operationColumn->toggleHeaderHighlight();
}
void Screen::initResultColumn()
{
resultColumn = new Column(columnHeight, DEFAULT_RESULT_COL_WIDTH, HEADER_HEIGHT, DEFAULT_RESULT_COL_X, " Result");
columnMap[ScreenConfiguration::result] = resultColumn;
// toggle header highlight based on screen configuration
if(screenConfig.getColumnSort() == ScreenConfiguration::result) resultColumn->toggleHeaderHighlight();
}
void Screen::initDurationColumn()
{
durationColumn = new Column(columnHeight, DEFAULT_DURATION_COL_WIDTH, HEADER_HEIGHT, DEFAULT_DURATION_COL_X, " Duration (ms)");
columnMap[ScreenConfiguration::duration] = durationColumn;
// toggle header highlight based on screen configuration
if(screenConfig.getColumnSort() == ScreenConfiguration::duration) durationColumn->toggleHeaderHighlight();
}
void Screen::initDetailColumn()
{
detailColumn = new Column(columnHeight, screenW - DEFAULT_DETAIL_COL_X, HEADER_HEIGHT, DEFAULT_DETAIL_COL_X, " Details");
}
void Screen::initStatView()
{
int statWindowHeight = DEFAULT_STAT_VIEW_HEIGHT;
int statWindowWidth = screenW * 2 / 3;
int statWindow_Y = screenH / 4;
int statWindow_X = screenW / 6;
statWin = newwin(statWindowHeight, statWindowWidth, statWindow_Y, statWindow_X);
statPanel = new_panel(statWin);
statViewActive = false;
hide_panel(statPanel);
}
void Screen::initHelpView()
{
int helpWindowHeight = DEFAULT_HELP_VIEW_HEIGHT;
int helpWindowWidth = screenW * 2 / 3;
int helpWindow_Y = screenH / 4;
int helpWindow_X = screenW / 6;
helpWin = newwin(helpWindowHeight, helpWindowWidth, helpWindow_Y, helpWindow_X);
helpPanel = new_panel(helpWin);
helpViewActive = false;
hide_panel(helpPanel);
}
void Screen::initDetailView()
{
int detailWindowHeight = screenH / 2;
int detailWindowWidth = screenW * 2 / 3;
int detailWindow_Y = screenH / 4;
int detailWindow_X = screenW / 6;
detailWin = newwin(detailWindowHeight, detailWindowWidth, detailWindow_Y, detailWindow_X);
detailPanel = new_panel(detailWin);
detailViewActive = false;
hide_panel(detailPanel);
}
void Screen::initColumnView()
{
int columnWindowHeight = DEFAULT_COLUMN_VIEW_HEIGHT;
int columnWindowWidth = screenW * 2 / 3;
int columnWindow_Y = screenH / 4;
int columnWindow_X = screenW / 6;
columnWin = newwin(columnWindowHeight, columnWindowWidth, columnWindow_Y, columnWindow_X);
columnPanel = new_panel(columnWin);
columnSortViewActive = false;
hide_panel(columnPanel);
}
void Screen::scrollUp()
{
// check if we are at the top of the page
if(currentLine <= 1) // top of column values is 1 due to column header
{
// check if we are at the first page
if(currentPage <= 0)
{
currentLine = 1;
}
else
{
// page up to go back to previous page
pageUp();
// set currentline to top of new page and adjust highlighting
setLineColor(currentLine, LINE_COLOR);
currentLine = totalLines;
setLineColor(currentLine, HIGHLIGHT_COLOR);
}
}
else
{
// highlight row above and set current line back to default
setLineColor(currentLine, LINE_COLOR);
currentLine--;
setLineColor(currentLine, HIGHLIGHT_COLOR);
}
LOG(DEBUG) << "Screen scrollUp():::CurrentPage:\t" << currentPage << "CurrentLine:\t" << currentLine \
<< "totalEvents:\t" << totalEvents << "totalLines:\t" << totalLines;
}
void Screen::scrollDown()
{
ProcmonConfiguration * config = configPtr.get();
auto storageEngine = config->GetStorage();
// check if we are at the bottom of the page and the page is full of events
if(currentLine >= totalEvents)
{
// page down to scroll to next page if the current page is full
if(totalEvents == totalLines)
{
int oldPage = currentPage;
pageDown();
if(currentPage > oldPage)
{
// update to top of new page and adjust highlighting
setLineColor(currentLine, LINE_COLOR);
currentLine = 1;
setLineColor(currentLine, HIGHLIGHT_COLOR);
}
}
}
else
{
// highlight row below and set current line back to default
setLineColor(currentLine, LINE_COLOR);
currentLine++;
setLineColor(currentLine, HIGHLIGHT_COLOR);
}
LOG(DEBUG) << "Screen scrollDown():::CurrentPage:\t" << currentPage << "CurrentLine:\t" << currentLine \
<< "totalEvents:\t" << totalEvents << "totalLines:\t" << totalLines;
}
void Screen::pageUp()
{
// if we are at the first page then do nothing
if (currentPage == 0) return;
ProcmonConfiguration * config = configPtr.get();
auto storageEngine = config->GetStorage();
// decrement active page number
currentPage--;
// do we have an active filter?
if (filter.size() > 0)
{
eventList = storageEngine->QueryByFilteredEventsinPage(filter, config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
}
else
{
eventList = storageEngine->QueryByEventsinPage(config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
}
// draw results from datastore to screen
displayEvents(eventList);
}
void Screen::pageDown()
{
ProcmonConfiguration * config = configPtr.get();
auto storageEngine = config->GetStorage();
// check if we have an active filter
if(filter.size() > 0)
{
// can we scroll further?
if(eventList.size() < totalLines)
{
auto newEventSet = storageEngine->QueryByFilteredEventsinPage(filter, config->pids, getCurrentPage(), getTotalLines(), screenConfig.getColumnSort(), screenConfig.getColumnAscending(), config->events);
// are there any new events with the current filter?
if(newEventSet.size() > eventList.size())
{
eventList.clear();
eventList.insert(eventList.end(), newEventSet.begin(), newEventSet.end());
}
else return;
}