added timer

mainwindow.cpp

@@ -6,6 +6,7 @@
 #include <QStyle>
 
 #include <QDebug>
+#include <QKeyEvent>
 
 class QNetworkReply;
 namespace shutdown2 {
@@ -30,6 +31,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
 
     // init state machine
     initStateMachine();
+    connect(&mTimer, &QTimer::timeout, this, &MainWindow::updateTime);
 }
 
 MainWindow::~MainWindow()
@@ -56,21 +58,72 @@ void MainWindow::initStateMachine()
     off->addTransition(ui->btn_startstop, SIGNAL(clicked()), on);
 
     // init
-    mState.addState(on);
-    mState.addState(off);
-    mState.setInitialState(off);
-    mState.start();
+    mStateMachine.addState(on);
+    mStateMachine.addState(off);
+    mStateMachine.setInitialState(off);
+    mStateMachine.start();
 }
 
 void MainWindow::on_btn_startstop_clicked()
 {
-    triggerCssUpdate();
-}
-
-void MainWindow::triggerCssUpdate()
-{
-    qDebug() << QTime::currentTime() << "updating CSS"; // rogo: delete
+    timerToggled();
     setStyleSheet(mCss);
 }
 
+void MainWindow::shutdown()
+{
+    // TODO: shutdown
+}
+
+void MainWindow::updateTime()
+{
+    if (mTimeLeft == 0) {
+        shutdown();
+        mTimer.stop();
+        return;
+    }
+
+    QString m = QString::number(mTimeLeft / 60);
+    QString s = QString::number(mTimeLeft % 60);
+
+    if (s.length() == 1) s = "0" + s;
+
+    ui->lbl_timer->setText(m + ":" + s);
+    mTimeLeft--;
+}
+
+void MainWindow::timerToggled() {
+    if (ui->btn_startstop->property("on").toBool()) {
+
+        int time = 0;
+        foreach (QRadioButton* r, ui->groupBox->findChildren<QRadioButton*>()) {
+            if (r->isChecked()) {
+                time = r->property("value").toInt();
+                break;
+            }
+        }
+
+        if (time == -1)
+            time = ui->spinBox->value();
+
+        time *= 60; // convert to seconds
+        mTimeLeft = time;
+        updateTime();
+        mTimer.start(1000);
+    } else {
+        mTimeLeft = -2;
+        mTimer.stop();
+        ui->lbl_timer->setText("-- : --");
+    }
+}
+
+void MainWindow::keyPressEvent(QKeyEvent *event)
+{
+    if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return) {
+        ui->btn_startstop->click(); // this is needed this way to trigger statemachine transition
+        event->accept();
+    }
+}
+
+
 }