聊天軟體中的視窗上滑和下滑提示上下線

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聊天軟體中右下角視窗上滑提示有好友上線，視窗下滑提示有好友下線。

在 Qt 下實現此功能，用到的類有 QPoint  QTimer

mainwindow.h

 

 1 #ifndef MAINWINDOW_H 2 #define MAINWINDOW_H 3  4 #include <QMainWindow> 5 #include <QPoint> 6 #include <QTimer> 7  8 namespace Ui { 9 class MainWindow;10 }11 12 class MainWindow : public QMainWindow13 {14     Q_OBJECT15     16 public:17     explicit MainWindow(QWidget *parent = 0);18     void point_to_point();19     ~MainWindow();20     21 private:22     Ui::MainWindow *ui;23     QTimer* M_Timer;24     QTimer* M_Timer1;25     QTimer* M_Timer2;26     int Counter;27     QPoint curPos;28 29 private slots:30     void timerDone();31     void timerDone1();32     void timerDone2();33 };34 35 #endif // MAINWINDOW_H

 

 

 

 

 mainwindow.cpp

 1 #include "mainwindow.h" 2 #include "ui_mainwindow.h" 3  4 MainWindow::MainWindow(QWidget *parent) : 5     QMainWindow(parent), 6     ui(new Ui::MainWindow) 7 { 8     ui->setupUi(this); 9     M_Timer = new QTimer();10     M_Timer1 = new QTimer();11     M_Timer2 = new QTimer();12     this->move(950,768);13     curPos=this->pos();14     connect(M_Timer, SIGNAL(timeout()),this, SLOT(timerDone()));15     connect(M_Timer1, SIGNAL(timeout()),this, SLOT(timerDone1()));16     connect(M_Timer2, SIGNAL(timeout()),this, SLOT(timerDone2()));17     point_to_point();18 }19 20 MainWindow::~MainWindow()21 {22     delete ui;23 }24 25 void MainWindow :: point_to_point()26 {27     M_Timer->start(100);28     curPos=this->pos();29     QPoint TmpPos(curPos.x(),curPos.y()-10);30     this->move(TmpPos);31 }32 33 void MainWindow :: timerDone()34 {35     curPos=this->pos();36     QPoint TmpPos(curPos.x(),curPos.y()-10);37     this->move(TmpPos);38     Counter = curPos.y();39     qDebug() << curPos.y();40     if(Counter < 500)41     {42        M_Timer->stop();43        M_Timer2->start(1000);44     }45 }46 47 void MainWindow :: timerDone1()48 {49     curPos=this->pos();50     QPoint TmpPos(curPos.x(),curPos.y()+10);51     this->move(TmpPos);52     Counter = curPos.y();53     if(Counter > 660)54     {55         M_Timer1->stop();56     }57 }58 59 void MainWindow :: timerDone2()60 {61     curPos=this->pos();62     QPoint TmpPos(curPos.x(),curPos.y());63     this->move(TmpPos);64     M_Timer2->stop();65     M_Timer1->start(100);66 }

 

2014-07-28   21:03:08