聊天软件中的窗口上滑和下滑提示上下线

聊天软件中右下角窗口上滑提示有好友上线，窗口下滑提示有好友下线。

在 Qt 下实现此功能，用到的类有 QPoint  QTimer

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QPoint>
#include <QTimer>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT
    
public:
    explicit MainWindow(QWidget *parent = 0);
    void point_to_point();
    ~MainWindow();
    
private:
    Ui::MainWindow *ui;
    QTimer* M_Timer;
    QTimer* M_Timer1;
    QTimer* M_Timer2;
    int Counter;
    QPoint curPos;

private slots:
    void timerDone();
    void timerDone1();
    void timerDone2();
};

#endif // MAINWINDOW_H

 mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    M_Timer = new QTimer();
    M_Timer1 = new QTimer();
    M_Timer2 = new QTimer();
    this->move(950,768);
    curPos=this->pos();
    connect(M_Timer, SIGNAL(timeout()),this, SLOT(timerDone()));
    connect(M_Timer1, SIGNAL(timeout()),this, SLOT(timerDone1()));
    connect(M_Timer2, SIGNAL(timeout()),this, SLOT(timerDone2()));
    point_to_point();
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow :: point_to_point()
{
    M_Timer->start(100);
    curPos=this->pos();
    QPoint TmpPos(curPos.x(),curPos.y()-10);
    this->move(TmpPos);
}

void MainWindow :: timerDone()
{
    curPos=this->pos();
    QPoint TmpPos(curPos.x(),curPos.y()-10);
    this->move(TmpPos);
    Counter = curPos.y();
    qDebug() << curPos.y();
    if(Counter < 500)
    {
       M_Timer->stop();
       M_Timer2->start(1000);
    }
}

void MainWindow :: timerDone1()
{
    curPos=this->pos();
    QPoint TmpPos(curPos.x(),curPos.y()+10);
    this->move(TmpPos);
    Counter = curPos.y();
    if(Counter > 660)
    {
        M_Timer1->stop();
    }
}

void MainWindow :: timerDone2()
{
    curPos=this->pos();
    QPoint TmpPos(curPos.x(),curPos.y());
    this->move(TmpPos);
    M_Timer2->stop();
    M_Timer1->start(100);
}

2014-07-28   21:03:08