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pmtimelive.cpp

/*
 * Copyright (c) 2006, Ken McDonell.  All Rights Reserved.
 * Copyright (c) 2006-2007, Aconex.  All Rights Reserved.
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 */
#include "pmtimelive.h"

#include <QtCore/QDir>
#include <QtCore/QTimer>
#include <QtCore/QLibraryInfo>
#include <QtGui/QValidator>
#include <QtGui/QWhatsThis>
#include <QtGui/QMessageBox>
#include <QtGui/QCloseEvent>
#include <QtGui/QActionGroup>
#include <pcp/pmapi.h>
#include <pcp/impl.h>
#include <sys/time.h>
#include <pmtime.h>
#include "version.h"
#include "aboutdialog.h"
#include "seealsodialog.h"

PmTimeLive::PmTimeLive() : QMainWindow(NULL)
{
    setupUi(this);
#ifdef Q_OS_MAC        // fixup after relocation of the MenuBar by Qt
    QSize size = QSize(width(), height() - MenuBar->height());
    setMinimumSize(size);
    setMaximumSize(size);
#endif
}

typedef struct {
    PmTime::State state;
    QIcon         *stop;
    QIcon         *play;
} IconStateMap;

static void setup(IconStateMap *map, PmTime::State state,
              QIcon *stop, QIcon *play)
{
    map->state = state;
    map->stop = stop;
    map->play = play;
}

void PmTimeLive::setControl(PmTime::State state)
{
    static IconStateMap maps[2];
    static int nmaps;

    if (!nmaps) {
      nmaps = sizeof(maps) / sizeof(maps[0]);
      setup(&maps[0], PmTime::StoppedState,
                  PmTime::icon(PmTime::StoppedOn),
                  PmTime::icon(PmTime::ForwardOff));
      setup(&maps[1], PmTime::ForwardState,
                  PmTime::icon(PmTime::StoppedOff),
                  PmTime::icon(PmTime::ForwardOn));
    }

    if (my.pmtime.state != state) {
      for (int i = 0; i < nmaps; i++) {
          if (maps[i].state == state) {
            buttonStop->setIcon(*maps[i].stop);
            buttonPlay->setIcon(*maps[i].play);
            break;
          }
      }
      my.pmtime.state = state;
    }
}

void PmTimeLive::init()
{
    static const char *UTC = "UTC\0Universal Coordinated Time";

    console->post("Starting Live Time Control...");

    my.units = PmTime::Seconds;
    my.first = true;
    my.tzActions = NULL;
    my.assistant = NULL;

    memset(&my.pmtime, 0, sizeof(my.pmtime));
    my.pmtime.source = PmTime::HostSource;
    my.pmtime.delta.tv_sec = PmTime::DefaultDelta;

    my.showMilliseconds = false;
    optionsDetailShow_MillisecondsAction->setChecked(my.showMilliseconds);
    my.showYear = false;
    optionsDetailShow_YearAction->setChecked(my.showYear);

    addTimezone(UTC);
    displayPosition();
    displayDeltaText();
    setControl(PmTime::ForwardState);

    my.timer = new QTimer(this);
    connect(my.timer, SIGNAL(timeout()), SLOT(updateTime()));
    my.timer->start(timerInterval());
    lineEditDelta->setAlignment(Qt::AlignRight);
    lineEditDelta->setValidator(new QDoubleValidator
            (0.001, INT_MAX, 3, lineEditDelta));
}

void PmTimeLive::quit()
{
    console->post("live quit!\n");
    if (my.assistant)
      my.assistant->closeAssistant();
}

void PmTimeLive::helpAbout()
{
    AboutDialog about(this);
    about.exec();
}

void PmTimeLive::helpSeeAlso()
{
    SeeAlsoDialog about(this);
    about.exec();
}

void PmTimeLive::whatsThis()
{
    QWhatsThis::enterWhatsThisMode();
}

int PmTimeLive::timerInterval()
{
    return (int)((my.pmtime.delta.tv_sec * 1000) +
             (my.pmtime.delta.tv_usec / 1000));
}

void PmTimeLive::play_clicked()
{
    if (lineEditDelta->isModified())
      lineEditDelta_validate();
    if (my.pmtime.state != PmTime::ForwardState)
      play();
}

void PmTimeLive::play()
{
    console->post("PmTimeLive::play");
    setControl(PmTime::ForwardState);
    gettimeofday(&my.pmtime.position, NULL);
    displayPosition();
    emit vcrModePulse(&my.pmtime, 0);
    if (!my.timer->isActive())
      my.timer->start(timerInterval());
}

void PmTimeLive::stop_clicked()
{
    if (my.pmtime.state != PmTime::StoppedState)
      stop();
}

void PmTimeLive::stop()
{
    console->post("PmTimeLive::stop stopped time");
    setControl(PmTime::StoppedState);
    my.timer->stop();
    gettimeofday(&my.pmtime.position, NULL);
    emit vcrModePulse(&my.pmtime, 0);
}

void PmTimeLive::updateTime()
{
    gettimeofday(&my.pmtime.position, NULL);
    displayPosition();
    emit timePulse(&my.pmtime);
}

void PmTimeLive::displayPosition()
{
    QString text;
    char ctimebuf[32], msecbuf[5];

    pmCtime(&my.pmtime.position.tv_sec, ctimebuf);
    text = tr(ctimebuf);
    if (my.showYear == false)
      text.remove(19, 5);
    if (my.showMilliseconds == true) {
      sprintf(msecbuf, ".%03u", (uint)my.pmtime.position.tv_usec / 1000);
      text.insert(19, msecbuf);
    }
    lineEditCtime->setText(text.simplified());
}

void PmTimeLive::clickShowMsec()
{
    if (my.showMilliseconds == true)
      my.showMilliseconds = false;
    else
      my.showMilliseconds = true;
    optionsDetailShow_MillisecondsAction->setChecked(my.showMilliseconds);
    displayPosition();
}

void PmTimeLive::clickShowYear()
{
    if (my.showYear == true)
      my.showYear = false;
    else
      my.showYear = true;
    optionsDetailShow_YearAction->setChecked(my.showYear);
    displayPosition();
}

void PmTimeLive::changeDelta(int value)
{
    my.units = (PmTime::DeltaUnits)value;
    displayDeltaText();
}

void PmTimeLive::displayDeltaText()
{
    QString text;
    double delta = PmTime::secondsFromTimeval(&my.pmtime.delta);

    delta = PmTime::secondsToUnits(delta, my.units);
    if ((double)(int)delta == delta)
      text.sprintf("%.2f", delta);
    else
      text.sprintf("%.6f", delta);
    lineEditDelta->setText(text);
}

void PmTimeLive::showConsole()
{
    console->show();
}

void PmTimeLive::disableConsole()
{
    optionsShowConsoleAction->setVisible(false);
}

void PmTimeLive::hideWindow()
{
    if (isVisible())
      hide();
    else
      show();
}

void PmTimeLive::popup(bool hello_popetts)
{
    if (hello_popetts)
      show();
    else
      hide();
}

void PmTimeLive::closeEvent(QCloseEvent *ce)
{
    hide();
    ce->ignore();
}

void PmTimeLive::lineEditDelta_changed(const QString &)
{
    if (lineEditDelta->isModified())
      stop_clicked();
}

void PmTimeLive::lineEditDelta_validate()
{
    double delta;
    bool ok, reset = my.timer->isActive();

    delta = lineEditDelta->text().toDouble(&ok);
    if (!ok || delta <= 0) {
      displayDeltaText();     // reset to previous, known-good delta
    } else {
      my.timer->stop();
      delta = PmTime::unitsToSeconds(delta, my.units);
      PmTime::secondsToTimeval(delta, &my.pmtime.delta);
      emit vcrModePulse(&my.pmtime, 0);
      if (reset)
          my.timer->start(timerInterval());
    }
}

void PmTimeLive::setTimezone(QAction *action)
{
    for (int i = 0; i < my.tzlist.size(); i++) {
      TimeZone *tz = my.tzlist.at(i);
      if (tz->action() == action) {
          pmUseZone(tz->handle());
          emit tzPulse(&my.pmtime, tz->tz(), strlen(tz->tz()) + 1,
                        tz->tzlabel(), strlen(tz->tzlabel()) + 1);
          setTime(&my.pmtime, NULL);      // re-display the time, no messages
          console->post("PmTimeLive::setTimezone sent TZ %s(%s) to clients\n",
                        tz->tz(), tz->tzlabel());
          break;
      }
    }
}

void PmTimeLive::addTimezone(const char *string)
{
    TimeZone *tmp, *tzp;
    QAction *tzAction;
    char *label, *tz;
    int handle;

    if ((handle = pmNewZone(string)) < 0)
      return;

    if ((tz = strdup(string)) == NULL)
      return;

    if ((label = strdup(string + strlen(string) + 1)) == NULL) {
      free(tz);
      return;
    }

    for (int i = 0; i < my.tzlist.size(); i++) {
      tmp = my.tzlist.at(i);
      if (strcmp(tmp->tzlabel(), label) == 0) {
          free(label);
          free(tz);
          return;
      }
    }

    tzAction = new QAction(this);
    tzAction->setCheckable(true);
    tzAction->setToolTip(tz);
    tzAction->setText(label);

    tzp = new TimeZone(tz, label, tzAction, handle);
    my.tzlist.append(tzp);

    if (!my.tzActions) {
      my.tzActions = new QActionGroup(this);
      connect(my.tzActions, SIGNAL(selected(QAction *)) , this,
                        SLOT(setTimezone(QAction *)));
    }
    my.tzActions->addAction(tzAction);
    optionsTimezoneAction->addActions(my.tzActions->actions());
    console->post("PmTimeLive::addTimezone added TZ=%s label=%s", tz, label);
}

void PmTimeLive::setTime(PmTime::Packet *k, char *tzdata)
{
    if (tzdata != NULL)
      addTimezone(tzdata);

    if (my.first == true) {
      bool reset = my.timer->isActive();

      my.first = false;
      my.pmtime.position = k->position;
      my.pmtime.delta = k->delta;
      my.timer->stop();
      if (reset)
          my.timer->start(timerInterval());
      displayDeltaText();
      displayPosition();
    }
}

void PmTimeLive::assistantError(const QString &msg)
{
    QMessageBox::warning(this, pmProgname, msg);
}

void PmTimeLive::setupAssistant()
{
    if (my.assistant)
      return;
    my.assistant = new QAssistantClient(
            QLibraryInfo::location(QLibraryInfo::BinariesPath), this);
    connect(my.assistant, SIGNAL(error(const QString &)),
                this, SLOT(assistantError(const QString &)));
    QStringList arguments;
    QString documents = HTMLDIR;
    arguments << "-profile" << documents.append("/pmtime.adp");
    my.assistant->setArguments(arguments);
}

void PmTimeLive::helpManual()
{
    setupAssistant();
    QString documents = HTMLDIR;
    my.assistant->showPage(documents.append("/timecontrol.html"));
}

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