Qt5.8制作的简单数字计算器

Qt5.8制作的简单数字计算器
#include "mainwindow.h"#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow){    ui->setupUi(this);
    /***********开机显示*************///    widget = new QWidget(this);//    widget->setFixedSize(222,418);//    timerOpen = new QTimer;//    labelOpen = new QLabel(widget);//     QImage *img = new QImage;         //新建一个image对象//     img->load(":/Photo/开机界面.png"); //将图像资源载入对象img，注意路径，可点进图片右键复制路径//     this->labelOpen->setPixmap(QPixmap::fromImage(*img)); //将图片放入label，使用setPixmap,注意指针*img//     timerOpen->start(3000);//     connect(timerOpen,SIGNAL(timeout()),this,SLOT(OpenPhoto_Slot()));    /******************************/
    this->setWindowTitle("计算器");    this->setFixedSize(222,418);    this->setWindowIcon(QIcon(":/Photo/ICON.png"));    QPalette color;    color.setColor(QPalette::Background,Qt::darkCyan);//设置背景颜色    this->setPalette(color);
    this->setPushButtonSize();    this->addControlUi();    this->setMenuIcon();    ui->lcdNumber->setDigitCount(10);}
//void MainWindow::OpenPhoto_Slot()//{//    qDebug()<<"this OPenPhoto_Slot";//    delete widget;//    timerOpen->stop();//}
void MainWindow::setMenuIcon(){    ui->actioncheng->setIcon(QIcon(":/Photo/标准.png"));    ui->actionscience->setIcon(QIcon(":/Photo/科学.png"));    ui->actionprogrammer->setIcon(QIcon(":/Photo/程序员.png"));}
void MainWindow::setPushButtonSize(){    ui->PER_CENT->setFixedSize(51,51);// %    ui->ZERO->setFixedSize(51,51);    // 0    ui->POINT->setFixedSize(51,51);   // .    ui->ONE->setFixedSize(51,51);     // 1    ui->TWO->setFixedSize(51,51);     // 2    ui->THREE->setFixedSize(51,51);   // 3    ui->FOUR->setFixedSize(51,51);    // 4    ui->FIVE->setFixedSize(51,51);    // 5    ui->SIX->setFixedSize(51,51);     // 6    ui->SEVEN->setFixedSize(51,51);   // 7    ui->EIGHT->setFixedSize(51,51);   // 8    ui->NINE->setFixedSize(51,51);    // 9    ui->CLEAR->setFixedSize(51,51);   // C    ui->DIVIDE->setFixedSize(51,51);  //"/"    ui->RIDE->setFixedSize(51,51);    // X    ui->SUB->setFixedSize(51,51);     // -    ui->ADD->setFixedSize(51,51);     //    ui->EQUAL->setFixedSize(51,101);  // =    ui->BACK->setFixedSize(51,51);    ui->lcdNumber->setFixedSize(201,61);}

void MainWindow::addControlUi(){    ui->ZERO->  setIcon(QIcon(":/Photo/0.png"));    ui->ONE->   setIcon(QIcon(":/Photo/1.png"));    ui->TWO->   setIcon(QIcon(":/Photo/2.png"));    ui->THREE-> setIcon(QIcon(":/Photo/3.png"));    ui->FOUR->  setIcon(QIcon(":/Photo/4.png"));    ui->FIVE->  setIcon(QIcon(":/Photo/5.png"));    ui->SIX->   setIcon(QIcon(":/Photo/6.png"));    ui->SEVEN-> setIcon(QIcon(":/Photo/7.png"));    ui->EIGHT-> setIcon(QIcon(":/Photo/8.png"));    ui->NINE->  setIcon(QIcon(":/Photo/9.png"));    ui->BACK->  setIcon(QIcon(":/Photo/back.png"));    ui->ADD->   setIcon(QIcon(":/Photo/ .png"));    ui->SUB->   setIcon(QIcon(":/Photo/-.png"));    ui->CLEAR-> setIcon(QIcon(":/Photo/C.png"));    ui->DIVIDE->setIcon(QIcon(":/Photo/X.png"));    ui->RIDE->  setIcon(QIcon(":/Photo/除.png"));    ui->PER_CENT->setIcon(QIcon(":/Photo/%.png"));    ui->POINT-> setIcon(QIcon(":/Photo/..png"));    ui->EQUAL-> setIcon(QIcon(":/Photo/=.png"));
    ui->ZERO->  setIconSize(QSize(51,51));    ui->ONE->   setIconSize(QSize(51,51));    ui->TWO->   setIconSize(QSize(51,51));    ui->THREE-> setIconSize(QSize(51,51));    ui->FOUR->  setIconSize(QSize(51,51));    ui->FIVE->  setIconSize(QSize(51,51));    ui->SIX->   setIconSize(QSize(51,51));    ui->SEVEN-> setIconSize(QSize(51,51));    ui->EIGHT-> setIconSize(QSize(51,51));    ui->NINE->  setIconSize(QSize(51,51));    ui->BACK->  setIconSize(QSize(51,51));    ui->ADD->   setIconSize(QSize(51,51));    ui->SUB->   setIconSize(QSize(51,51));    ui->CLEAR-> setIconSize(QSize(51,51));    ui->DIVIDE->setIconSize(QSize(51,51));    ui->RIDE->  setIconSize(QSize(51,51));    ui->PER_CENT->setIconSize(QSize(51,51));    ui->POINT-> setIconSize(QSize(51,51));    ui->EQUAL-> setIconSize(QSize(51,101));}
MainWindow::~MainWindow(){    delete ui;}
/**********- 0 -***********/void MainWindow::on_ZERO_pressed(){    ui->ZERO->  setIcon(QIcon(":/Photo/0白.png"));    ui->ZERO->  setIconSize(QSize(51,51));    if(line.isEmpty())    {        line = "0";        ui->lcdNumber->display("0");    }    else    {        line = "0";        ui->lcdNumber->display(line);    }}
void MainWindow::on_ZERO_released(){    ui->ZERO->  setIcon(QIcon(":/Photo/0.png"));    ui->ZERO->  setIconSize(QSize(51,51));}/**********- 1 -***********/void MainWindow::on_ONE_pressed(){    ui->ONE->   setIcon(QIcon(":/Photo/1白.png"));    ui->ONE->   setIconSize(QSize(51,51));    line = "1";    ui->lcdNumber->display(line);}
void MainWindow::on_ONE_released(){    ui->ONE->   setIcon(QIcon(":/Photo/1.png"));    ui->ONE->   setIconSize(QSize(51,51));}/**********- 2 -***********/void MainWindow::on_TWO_pressed(){    ui->TWO->   setIcon(QIcon(":/Photo/2白.png"));    ui->TWO->   setIconSize(QSize(51,51));    line = "2";    ui->lcdNumber->display(line);}
void MainWindow::on_TWO_released(){    ui->TWO->   setIcon(QIcon(":/Photo/2.png"));    ui->TWO->   setIconSize(QSize(51,51));}/**********- 3 -***********/void MainWindow::on_THREE_pressed(){    ui->THREE-> setIcon(QIcon(":/Photo/3白.png"));    ui->THREE-> setIconSize(QSize(51,51));    line = "3";    ui->lcdNumber->display(line);}
void MainWindow::on_THREE_released(){    ui->THREE-> setIcon(QIcon(":/Photo/3.png"));    ui->THREE-> setIconSize(QSize(51,51));}/**********- 4 -***********/void MainWindow::on_FOUR_pressed(){    ui->FOUR->  setIcon(QIcon(":/Photo/4白.png"));    ui->FOUR->  setIconSize(QSize(51,51));    line = "4";    ui->lcdNumber->display(line);}
void MainWindow::on_FOUR_released(){    ui->FOUR->  setIcon(QIcon(":/Photo/4.png"));    ui->FOUR->  setIconSize(QSize(51,51));}/**********- 5 -***********/void MainWindow::on_FIVE_pressed(){    ui->FIVE->  setIcon(QIcon(":/Photo/5白.png"));    ui->FIVE->  setIconSize(QSize(51,51));    line = "5";    ui->lcdNumber->display(line);}
void MainWindow::on_FIVE_released(){    ui->FIVE->  setIcon(QIcon(":/Photo/5.png"));    ui->FIVE->  setIconSize(QSize(51,51));}/**********- 6 -***********/void MainWindow::on_SIX_pressed(){    ui->SIX->   setIcon(QIcon(":/Photo/6白.png"));    ui->SIX->   setIconSize(QSize(51,51));    line = "6";    ui->lcdNumber->display(line);}
void MainWindow::on_SIX_released(){    ui->SIX->   setIcon(QIcon(":/Photo/6.png"));    ui->SIX->   setIconSize(QSize(51,51));}/**********- 7 -***********/void MainWindow::on_SEVEN_pressed(){    ui->SEVEN-> setIcon(QIcon(":/Photo/7白.png"));    ui->SEVEN-> setIconSize(QSize(51,51));    line = "7";    ui->lcdNumber->display(line);}
void MainWindow::on_SEVEN_released(){    ui->SEVEN-> setIcon(QIcon(":/Photo/7.png"));    ui->SEVEN-> setIconSize(QSize(51,51));}/**********- 8 -***********/void MainWindow::on_EIGHT_pressed(){    ui->EIGHT-> setIcon(QIcon(":/Photo/8白.png"));    ui->EIGHT-> setIconSize(QSize(51,51));    line = "8";    ui->lcdNumber->display(line);}
void MainWindow::on_EIGHT_released(){    ui->EIGHT-> setIcon(QIcon(":/Photo/8.png"));    ui->EIGHT-> setIconSize(QSize(51,51));}/**********- 9 -***********/void MainWindow::on_NINE_pressed(){    ui->NINE->  setIcon(QIcon(":/Photo/9白.png"));    ui->NINE->  setIconSize(QSize(51,51));    line = "9";    ui->lcdNumber->display(line);}
void MainWindow::on_NINE_released(){    ui->NINE->  setIcon(QIcon(":/Photo/9.png"));    ui->NINE->  setIconSize(QSize(51,51));}/**********- back -***********/void MainWindow::on_BACK_pressed(){    ui->BACK->  setIcon(QIcon(":/Photo/back白.png"));    ui->BACK->  setIconSize(QSize(51,51));    qDebug()<<line;    line.chop(1);                //倒位删除，即是从字符串后面开始按位删除    if(line.isEmpty())    {         ui->lcdNumber->display(0);    }    else    {         ui->lcdNumber->display(line);    }}
void MainWindow::on_BACK_released(){    ui->BACK->  setIcon(QIcon(":/Photo/back.png"));    ui->BACK->  setIconSize(QSize(51,51));}/**********- -***********/void MainWindow::on_ADD_pressed(){    ui->ADD->   setIcon(QIcon(":/Photo/ 白.png"));    ui->ADD->   setIconSize(QSize(51,51));    pointFlag = true;    flag = 1;    temp1 = line; //获取前面输入的字符，并临时保存起来    qDebug()<<temp1;    line.clear(); //清空字符数组    sum = temp1.toDouble(); //将字符转换成浮点型    qDebug()<<sum;    ui->lcdNumber->display(0);//显示清空状态}
void MainWindow::on_ADD_released(){    ui->ADD->   setIcon(QIcon(":/Photo/ .png"));    ui->ADD->   setIconSize(QSize(51,51));}/**********- - -***********/void MainWindow::on_SUB_pressed(){    ui->SUB->   setIcon(QIcon(":/Photo/-白.png"));    ui->SUB->   setIconSize(QSize(51,51));    temp1 = line; //获取前面输入的字符，并临时保存起来    pointFlag = true;    qDebug()<<temp1;    line.clear(); //清空字符数组    if(flag3 == 0)    {        sum -= (temp1.toDouble()) * -1; //将字符转换成浮点型    }    else    {        sum -= temp1.toDouble(); //将字符转换成浮点型    }    qDebug()<<sum;    flag3 = 1;    ui->lcdNumber->display(0);//显示清空状态}
void MainWindow::on_SUB_released(){    ui->SUB->   setIcon(QIcon(":/Photo/-.png"));    ui->SUB->   setIconSize(QSize(51,51));}/**********- C -***********/void MainWindow::on_CLEAR_pressed(){    ui->CLEAR-> setIcon(QIcon(":/Photo/C白.png"));    ui->CLEAR-> setIconSize(QSize(51,51));    line.clear();    temp1.clear();    temp2.clear();    sum = 0;    sum1 = 1;    flag = 0;    flag1 = 0;    flag3 = 0;    flag4 =0;    flag5 = 0;    pointFlag = true;    rideFlag = true;    ui->lcdNumber->display("0");}
void MainWindow::on_CLEAR_released(){    ui->CLEAR-> setIcon(QIcon(":/Photo/C.png"));    ui->CLEAR-> setIconSize(QSize(51,51));}/**********- X -***********/void MainWindow::on_DIVIDE_pressed(){    ui->DIVIDE->setIcon(QIcon(":/Photo/X白.png"));    ui->DIVIDE->setIconSize(QSize(51,51));    pointFlag = true;    flag5 = 1;    temp1 = line; //获取前面输入的字符，并临时保存起来    qDebug()<<temp1;    line.clear(); //清空字符数组    if(sum == 0)    {        sum = temp1.toDouble();    }    else    {        sum = sum * temp1.toDouble();    }    ui->lcdNumber->display(0);//显示清空状态}
void MainWindow::on_DIVIDE_released(){    ui->DIVIDE->setIcon(QIcon(":/Photo/X.png"));    ui->DIVIDE->setIconSize(QSize(51,51));}/**********- / -***********/void MainWindow::on_RIDE_pressed(){    ui->RIDE->  setIcon(QIcon(":/Photo/除白.png"));    ui->RIDE->  setIconSize(QSize(51,51));    pointFlag = true;    flag4 = 1;    temp1 = line; //获取前面输入的字符，并临时保存起来    qDebug()<<"ride:"<<temp1;    line.clear(); //清空字符数组    if(rideFlag == true)    {        rideFlag = false;        sum1 = temp1.toDouble();    }    else    {        sum1 = sum1 / temp1.toDouble();    }    qDebug()<<"ridesum1:"<<sum1;    ui->lcdNumber->display(0);//显示清空状态}
void MainWindow::on_RIDE_released(){    ui->RIDE->  setIcon(QIcon(":/Photo/除.png"));    ui->RIDE->  setIconSize(QSize(51,51));}/**********- % -***********/void MainWindow::on_PER_CENT_pressed(){    ui->PER_CENT->setIcon(QIcon(":/Photo/%白.png"));    ui->PER_CENT->setIconSize(QSize(51,51));    pointFlag = true;}
void MainWindow::on_PER_CENT_released(){    ui->PER_CENT->setIcon(QIcon(":/Photo/%.png"));    ui->PER_CENT->setIconSize(QSize(51,51));}/**********- 。 -***********/void MainWindow::on_POINT_pressed(){    ui->POINT-> setIcon(QIcon(":/Photo/.白.png"));    ui->POINT-> setIconSize(QSize(51,51));
    if(pointFlag == true) //没有按等于号按键，说明没有进行运算，所以显示第一次输入的字符串     {         pointFlag = false;         line =".";         ui->lcdNumber->display(line);     }}
void MainWindow::on_POINT_released(){    ui->POINT-> setIcon(QIcon(":/Photo/..png"));    ui->POINT-> setIconSize(QSize(51,51));}/**********- = -***********/void MainWindow::on_EQUAL_pressed(){    ui->EQUAL-> setIcon(QIcon(":/Photo/=白.png"));    ui->EQUAL-> setIconSize(QSize(51,101));    flag1 = 1; //按一次等于号就改变状态      if(flag == 1) //加法      {          temp2 =line;          line.clear(); //清空字符串          sum = sum temp2.toDouble(); //将字符转换成浮点型          ui->lcdNumber->display(QString::number(sum)); //将浮点型转换成字符          flag = 0; //重新让标志位置零，等待下一次的加法进行       }       else if(flag3 == 1) //减法       {           temp2 = line;           line.clear(); //清空字符串           sum =sum - temp2.toDouble(); //将字符转换成浮点型           ui->lcdNumber->display(line);
           if(sum == 0) //等于0           {               ui->lcdNumber->display("0");           }           ui->lcdNumber->display(QString::number(sum)); //将浮点型转换成字符               // qDebug()<<sum;           flag3 = 0; //重新让标志位置零，等待下一次的减法进行       }       else if(flag4 == 1) //除法       {           temp2 = line;           line.clear(); //清空字符串           rideFlag = true;           qDebug()<<"temp2:"<<temp2;           qDebug()<<"sum1:"<<sum1;           sum1 = sum1 / temp2.toDouble(); //将字符转换成浮点型           if(temp2 == "0") //分母等于0           {               ui->lcdNumber->display("0");           }           qDebug()<<"sum11"<<sum1;           ui->lcdNumber->display(QString::number(sum1)); //将浮点型转换成字符           flag4 = 0; //重新让标志位置零,等待下一次的除法进行       }      else if(flag5 == 1) //乘法       {           temp2 = line;           line.clear(); //清空字符串           sum = sum * temp2.toDouble(); //将字符转换成浮点型           ui->lcdNumber->display(QString::number(sum)); //将浮点型转换成字符           flag5 = 0; //重新让标志位置零，等待下一次的乘法进行       }}
void MainWindow::on_EQUAL_released(){    ui->EQUAL-> setIcon(QIcon(":/Photo/=.png"));    ui->EQUAL-> setIconSize(QSize(51,101));}
void MainWindow::on_actionscience_triggered(){    this->hide();    S.show();}
void MainWindow::on_actionprogrammer_triggered(){    this->hide();    P.show();}