added timer for volume changes

mainwindow.cpp

@@ -1,6 +1,7 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 
+#include <QTimer>
 #include <qnetwork.h>
 #include <QtNetwork/QNetworkReply>
 
@@ -16,6 +17,9 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
     ui->txt_address->setText(DEFAULT_ADDRESS);
     mAddress = ui->txt_address->text();
 
+    connect(&mTimer, &QTimer::timeout, this, &MainWindow::sendVolume);
+    mTimer.setSingleShot(true);
+
     // load initial data
     sendCommand("<YAMAHA_AV cmd=\"GET\"><System><Power_Control><Power>GetParam</Power></Power_Control></System></YAMAHA_AV>");
     sendCommand("<YAMAHA_AV cmd=\"GET\"><Main_Zone><Volume><Lvl>GetParam</Lvl></Volume></Main_Zone></YAMAHA_AV>");
@@ -36,6 +40,7 @@ void MainWindow::sendCommand(QString cmd)
     QNetworkAccessManager *networkManager = new QNetworkAccessManager(this);
     networkManager->post(request, cmd.toUtf8());
     connect(networkManager, &QNetworkAccessManager::finished, this, &MainWindow::replyFinished);
+    networkManager->deleteLater();
 }
 
 void MainWindow::replyFinished(QNetworkReply* reply)
@@ -108,10 +113,25 @@ void MainWindow::on_btn_onoff_clicked()
     updateUi();
 }
 
+void MainWindow::on_dial_valueChanged(int value)
+{
+    int d = value % 10;
+    qDebug() << d;
+    if (!( d == -5 || d == 0 ))
+        value -= d;
+
+    ui->lbl_volume->setText(QString::number(value));
+    mVolume = value;
+    mTimer.start(WAITTIME);
 }
 
-void yremote::MainWindow::on_dial_valueChanged(int value)
+void MainWindow::sendVolume()
 {
-    ui->lbl_volume->setText(QString::number(value));
+//    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Volume><Lvl><Val>"
-    sendCommand("<YAMAHA_AV cmd=\"PUT\"><Main_Zone><Volume><Lvl><Val>" + QString::number(value) + "</Val><Exp>1</Exp><Unit>dB</Unit></Lvl></Volume></Main_Zone></YAMAHA_AV>");
+//                + QString::number(mVolume)
+//                + "</Val><Exp>1</Exp><Unit>dB</Unit></Lvl></Volume></Main_Zone></YAMAHA_AV>");
 }
+
+}
+
+

mainwindow.h

@@ -2,6 +2,7 @@
 #define MAINWINDOW_H
 
 #include <QMainWindow>
+#include <QTimer>
 #include "QtNetwork/QNetworkAccessManager"
 
 namespace Ui {
@@ -18,9 +19,6 @@ public:
     explicit MainWindow(QWidget *parent = 0);
     ~MainWindow();
 
-protected:
-    void func();
-
 private slots:
     void on_btn_onoff_clicked();
     void replyFinished(QNetworkReply *reply);
@@ -32,12 +30,15 @@ private:
     Ui::MainWindow *ui;
 
     QString mAddress;
-
+    QTimer mTimer;
     bool mPowered = false;
     int mVolume = 0;
+    const int WAITTIME = 300;
+
 
     void sendCommand(QString cmd);
     void updateUi();
+    void sendVolume();
 };
 
 }