#include "mainwindow.h"

#include <QPainter>
#include <QMouseEvent>
#include <QTime>
#include <QDebug>

MainWindow::MainWindow(QWidget* parent)
    : QMainWindow(parent)
{
    m_ptLast = QPoint(0, 0);

    m_font.setFamily("Comic Sans MS");
    m_font.setPointSize(12);
    m_font.setBold(true);

    t_rcBound = QRectF(0, 0, 200, 400);

    m_strContent = "CRect( ) throw( ); \n"
                   "CRect( \n"
                   "   int l, \n"
                   "   int t, \n"
                   "   int r, \n"
                   "   int b \n"
                   ") throw( ); \n"
                   "CRect( \n"
                   "   const RECT& srcRect \n"
                   ") throw( ); \n"
                   "CRect( \n"
                   "   LPCRECT lpSrcRect \n"
                   ") throw( ); \n"
                   "CRect( \n"
                   "   POINT point, \n"
                   "   SIZE size \n"
                   ") throw( ); \n"
                   "CRect( \n"
                   "   POINT topLeft, \n"
                   "   POINT bottomRight \n"
                   ") throw( );";
}

MainWindow::~MainWindow() {}

void MainWindow::paintEvent(QPaintEvent*)
{
    QPainter t_painter(this);
    t_painter.fillRect(t_rcBound, Qt::white);
    t_painter.setFont(m_font);

    QTime t_time(QTime::currentTime());
    t_painter.drawText(t_rcBound, Qt::AlignTop | Qt::AlignLeft, m_strContent);
    //qDebug()<<"msecsTo: "<<t_time.msecsTo(QTime::currentTime());
    this->setWindowTitle(QString("%1").arg(t_time.msecsTo(QTime::currentTime())));
}

void MainWindow::mousePressEvent(QMouseEvent* event)
{
    m_ptLast = event->pos();
}

void MainWindow::mouseMoveEvent(QMouseEvent* event)
{
    update(t_rcBound.toRect());
    t_rcBound.translate(event->pos() - m_ptLast);
    update(t_rcBound.toRect());

    m_ptLast = event->pos();
}

void MainWindow::mouseReleaseEvent(QMouseEvent* event)
{
    update(t_rcBound.toRect());
    t_rcBound.translate(event->pos() - m_ptLast);
    update(t_rcBound.toRect());

    m_ptLast = event->pos();
}