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application.cpp
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application.cpp
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#include <iostream>
#include <QApplication>
#include <QWidget>
#include <QPainter>
#include <QPaintEvent>
#include <QHBoxLayout>
#include <QPushButton>
#include <QVBoxLayout>
#include "graphicwidget.h"
#include "application.h"
using namespace std;
Application::Application(int &argc, char *argv[]) : QApplication(argc, argv)
{
graphicWidget = 0;
mainWindow = 0;
}
Application::~Application()
{
if (graphicWidget != 0)
delete graphicWidget;
graphicWidget = 0;
if (mainWindow !=0)
delete mainWindow;
mainWindow = 0;
}
int Application::run()
{
mainWindow = new QWidget;
mainWindow->setWindowTitle("This title was set by Application class");
graphicWidget = new GraphicWidget;
graphicWidget->setMinimumSize(300, 350);
QPushButton* buttonStart = new QPushButton("Start");
QPushButton* buttonStop = new QPushButton("Stop");
QObject::connect(buttonStart, SIGNAL(clicked()), graphicWidget, SLOT(startRotation()));
QObject::connect(buttonStop, SIGNAL(clicked()), graphicWidget, SLOT(stopRotation()));
QVBoxLayout* rightLayout = new QVBoxLayout;
rightLayout->addWidget(buttonStart);
rightLayout->addWidget(buttonStop);
rightLayout->addStretch();
QHBoxLayout* mainLayout = new QHBoxLayout;
mainLayout->addWidget(graphicWidget);
mainLayout->addLayout(rightLayout);
mainWindow->setLayout(mainLayout);
mainWindow->show();
return QApplication::exec();
}