Qt for android手机屏幕当鼠标用

2019-11-09 16:03:15

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由于无线鼠标忘记带回家了，想躺在床上看电视（电视机屏幕当显示器）怎么办呢?HOHO，我们的手机屏幕本来就是个触摸板，嘿嘿，那就用手机屏幕当鼠标好了。大致的思路就是电脑和手机用Tcp通信，毕竟是都连着路由器的。主要用到的模块就是QTcpServer,QTcpSocket.

#include <QObject>#include <QSystemTrayIcon>class Widget;class QTcpServer;class QTcpSocket;class controller : public QObject{ Q_OBJECTpublic: explicit controller(QObject *parent = 0); typedef enum{mouseMove,mouseSingleClick,mouseDoubleClick,mouseRightClick} mouseAction; ~controller();PRivate: QTcpServer* tcpserver; QTcpSocket* clientSocket; quint16 blockSize; Widget* widget; QSystemTrayIcon* sysIcon;private: void TranslateMessage();public slots: void onConnected(); void onReadyRead(); void onDisConnected(); void onSysIconActRe(QSystemTrayIcon::ActivationReason reason);#include "controller.h"#include <QTcpSocket>#include <QTcpServer>#include <QDataStream>#include <windows.h>#include "widget.h"#include <QHostAddress>controller::controller(QObject *parent) : QObject(parent){ tcpserver = new QTcpServer(this); widget = new Widget; widget->show(); sysIcon = new QSystemTrayIcon(this); sysIcon->setIcon(QIcon(":/computer_16px.ico")); sysIcon->hide(); sysIcon->setToolTip("工作中");// installEventFilter(sysIcon); tcpserver->listen(QHostAddress::Any,15333); //监听15333端口 blockSize = 0; connect(tcpserver,SIGNAL(newConnection()),SLOT(onConnected())); connect(widget,SIGNAL(sg_hide()),sysIcon,SLOT(show())); connect(sysIcon,SIGNAL(activated(QSystemTrayIcon::ActivationReason)), SLOT(onSysIconActRe(QSystemTrayIcon::ActivationReason)));}void controller::onReadyRead(){ QDataStream in(clientSocket); in.setVersion(QDataStream::Qt_5_8); while(clientSocket->bytesAvailable()>=sizeof(quint16)){ if(blockSize==0) in>>blockSize; if(clientSocket->bytesAvailable()<blockSize) break; TranslateMessage(); // widget->appendLog("收到消息"); blockSize=0; }}void controller::TranslateMessage(){ QDataStream in(clientSocket); in.setVersion(QDataStream::Qt_5_8); qint16 actionType; in>>actionType;// DWord dx,dy; int px,py; switch(actionType){ case mouseMove: in>>px>>py;// dx = px*GetSystemMetrics(SM_CXSCREEN);// dy = py*GetSystemMetrics(SM_CYSCREEN); mouse_event(MOUSEEVENTF_MOVE,px,py,0,0);// qDebug()<<dx<<dy; break; case mouseSingleClick: mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0,0); mouse_event(MOUSEEVENTF_LEFTUP,0,0,0,0); break; case mouseDoubleClick: mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0,0); mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0,0); mouse_event(MOUSEEVENTF_LEFTUP,0,0,0,0); break; case mouseRightClick: mouse_event(MOUSEEVENTF_RIGHTDOWN,0,0,0,0); mouse_event(MOUSEEVENTF_RIGHTUP,0,0,0,0); break; }}void controller::onConnected(){ clientSocket = tcpserver->nextPendingConnection(); connect(clientSocket,SIGNAL(readyRead()),SLOT(onReadyRead())); connect(clientSocket,SIGNAL(disconnected()),SLOT(onDisConnected())); widget->appendLog("建立连接！"); widget->appendLog("客户IP:"+clientSocket->peerAddress().toString()); widget->appendLog("客户名:"+clientSocket->peerName());}void controller::onDisConnected(){ widget->appendLog("断开连接!"); clientSocket->deleteLater();}controller::~controller(){ widget->deleteLater();}void controller::onSysIconActRe(QSystemTrayIcon::ActivationReason reason){ if(reason == QSystemTrayIcon::DoubleClick){ widget->show(); sysIcon->hide(); }}

这是PC端的主要代码，界面用的是之前写的模板。下面是安卓端的，就更简单了，主要就是一个触摸区域和鼠标左右键。

#include <QDialog>class QTcpSocket;class QTimer;namespace Ui {class Dialog;}class Dialog : public QDialog{ Q_OBJECTpublic: explicit Dialog(QWidget *parent = 0); ~Dialog(); enum{mouseMove,mouseSingleClick,mouseDoubleClick,mouseRightClick};private: Ui::Dialog *ui; QTcpSocket* tcpSocket; QPoint move_pre_position; QTimer* clickTimer;public slots: void onBtn_connectClicked(); void onBtn_disconnectClicked(); void onClick_TimerRunout(); void onConnected(); void onDisconnected(); void onBtn_LeftClicked(); void onBtn_RightClicked();protected: void mouseMoveEvent(QMouseEvent*); void mousePressEvent(QMouseEvent*);};#include "dialog.h"#include "ui_dialog.h"#include <QTcpSocket>#include <QHostAddress>#include <QMouseEvent>#include <QDataStream>#include <QTimer>Dialog::Dialog(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog){ ui->setupUi(this); showFullScreen(); tcpSocket = new QTcpSocket(this); tcpSocket->bind(ui->lineEdit_port->text().toInt()); connect(ui->btn_connect,SIGNAL(clicked(bool)),SLOT(onBtn_connectClicked())); clickTimer = new QTimer(this); clickTimer->setInterval(100); clickTimer->setSingleShot(true); connect(clickTimer,SIGNAL(timeout()),SLOT(onClick_TimerRunout())); connect(tcpSocket,SIGNAL(connected()),SLOT(onConnected())); connect(tcpSocket,SIGNAL(disconnected()),SLOT(onDisconnected())); connect(ui->btn_disconnect,SIGNAL(clicked(bool)),SLOT(onBtn_disconnectClicked())); connect(ui->Btn_Left,SIGNAL(clicked(bool)),SLOT(onBtn_LeftClicked())); connect(ui->Btn_Right,SIGNAL(clicked(bool)),SLOT(onBtn_RightClicked()));}Dialog::~Dialog(){ delete ui;}void Dialog::onBtn_connectClicked(){ tcpSocket->connectToHost(QHostAddress(ui->lineEdit_ip->text()),ui->lineEdit_port->text().toInt());}void Dialog::onBtn_disconnectClicked(){ tcpSocket->disconnectFromHost();}void Dialog::mouseMoveEvent(QMouseEvent* event){ if(tcpSocket->state() == QAbstractSocket::ConnectedState){ QPoint movePos = event->pos() - move_pre_position; int move_x,move_y; move_x = movePos.x(); move_y = movePos.y(); QByteArray data; QDataStream out(&data,QIODevice::WriteOnly); out.setVersion(QDataStream::Qt_5_8); out<<quint16(0)<<(qint16)mouseMove<<move_x<<move_y; out.device()->seek(0); out<<(quint16)(data.size()-sizeof(quint16)); tcpSocket->write(data); move_pre_position = event->pos();// ui->textBrowser->append(QVariant(move_x).toString()+QVariant(move_y).toString()); }}void Dialog::mousePressEvent(QMouseEvent *event){ move_pre_position = event->pos(); //记录当前位置}void Dialog::onClick_TimerRunout(){ QByteArray data; QDataStream out(&data,QIODevice::WriteOnly); out.setVersion(QDataStream::Qt_5_8); out<<quint16(0)<<(qint16)mouseSingleClick; out.device()->seek(0); out<<(quint16)(data.size()-sizeof(quint16)); tcpSocket->write(data);}void Dialog::onConnected(){ ui->textBrowser->append("连接电脑成功!"); ui->textBrowser->append("电脑名:"+tcpSocket->peerName());}void Dialog::onDisconnected(){ ui->textBrowser->append("已断开连接");}void Dialog::onBtn_LeftClicked(){ if(tcpSocket->state() == QAbstractSocket::ConnectedState){ QByteArray data; QDataStream out(&data,QIODevice::WriteOnly); out.setVersion(QDataStream::Qt_5_8); if(clickTimer->isActive()){ out<<quint16(0)<<(qint16)mouseDoubleClick; clickTimer->stop(); out.device()->seek(0); out<<(quint16)(data.size()-sizeof(quint16)); tcpSocket->write(data); } else{ clickTimer->start(); //双击单击判断 } }}void Dialog::onBtn_RightClicked(){ if(tcpSocket->state() == QAbstractSocket::ConnectedState){ QByteArray data; QDataStream out(&data,QIODevice::WriteOnly); out.setVersion(QDataStream::Qt_5_8); out<<quint16(0)<<(qint16)mouseRightClick; clickTimer->stop(); out.device()->seek(0); out<<(quint16)(data.size()-sizeof(quint16)); tcpSocket->write(data); }}

由于之前写过一个仿QQ的聊天程序（也就基本的聊天功能啦），这次几乎没碰到问题。主要会发生的问题就是TcpSocket的读写，可以参考上面的onReadyRead函数。（因为Tcp可能一下接到几条消息，会粘连所以要注意）。还有就是我不知道Qt有没有自带的函数可以实现任意区域的鼠标事件，我用的是windows的函数, mouse_event. 下面贴下运行效果啦：这里写图片描述