QT界面计算机程序-2024-9-13

#include "maininterface.h" #include "ui_maininterface.h" MainInterface::MainInterface(QWidget *parent) : QWidget(parent) , ui(new Ui::MainInterface) { ui->setupUi(this); //设置计算器界面的上限以及下限的大小固定为500 X 800 setMinimumSize(500,700); setMaximumSize(500,700); //设置计算器的名字 setWindowTitle("计算器"); //设置计算器图标 QIcon icon("/home/ubuntu/QT_project/calculator/Computer_icon.png"); setWindowIcon(icon); //规划计算机布局 pb = new QPushButton[17]; int x = 0; int y = 600; QFont f; f.setPointSize(30); for(int i=0;i<16;i++) { //每个按钮都设置在主界面上 pb[i].setParent(this); //设置每个按钮的大小 pb[i].resize(125,100); //设置每个按钮的字体大小 pb[i].setFont(f); //移动每个按钮的位置，让其在主界面都有自己的固定位置 pb[i].move(x,y); x =((x+125)%500); if(x == 0) y -=100; } //设置每个按钮的名字 pb[0].setText("="); pb[1].setText("0"); pb[2].setText("."); pb[3].setText("+"); pb[4].setText("1"); pb[5].setText("2"); pb[6].setText("3"); pb[7].setText("-"); pb[8].setText("4"); pb[9].setText("5"); pb[10].setText("6"); pb[11].setText("x"); pb[12].setText("7"); pb[13].setText("8"); pb[14].setText("9"); QIcon icon_pb15("/home/ubuntu/QT_project/calculator/pb15_icon.png"); pb[15].setIcon(icon_pb15); //QSize size_pb15(); pb[15].setIconSize(QSize(125,100)); pb[16].setParent(this); pb[16].resize(500,100); pb[16].move(0,200); pb[16].setText("清空（C）"); pb[16].setFont(f); //设置标签 pl = new QLabel[2]; for(int i=0;i<2;i++) { //设置标签的所属窗口 pl[i].setParent(this); //设置标签的大小 pl[i].resize(500,100); //设置标签的默认文本显示的位置（右对齐和中心对齐） pl[i].setAlignment(Qt::AlignRight|Qt::AlignVCenter); } //设置字体为30格式的大小 f.setPointSize(30); //设置字体格式 pl[0].setFont(f); //设置字体为50格式的大小 f.setPointSize(50); //设置字体格式 pl[1].setFont(f); //移动标签位置 pl[1].move(0,100); //设置标签的显示文本 pl[1].setText("0"); //建立按钮点击信号的连接 connect(pb,&QPushButton::clicked,this,&MainInterface::PushBotton_1);// = connect(pb+1,&QPushButton::clicked,this,&MainInterface::PushBotton_2);// 0 connect(pb+2,&QPushButton::clicked,this,&MainInterface::PushBotton_3);// . connect(pb+3,&QPushButton::clicked,this,&MainInterface::PushBotton_4);// + connect(pb+4,&QPushButton::clicked,this,&MainInterface::PushBotton_5);// 1 connect(pb+5,&QPushButton::clicked,this,&MainInterface::PushBotton_6);// 2 connect(pb+6,&QPushButton::clicked,this,&MainInterface::PushBotton_7);// 3 connect(pb+7,&QPushButton::clicked,this,&MainInterface::PushBotton_8);// - connect(pb+8,&QPushButton::clicked,this,&MainInterface::PushBotton_9);// 4 connect(pb+9,&QPushButton::clicked,this,&MainInterface::PushBotton_10);// 5 connect(pb+10,&QPushButton::clicked,this,&MainInterface::PushBotton_11);// 6 connect(pb+11,&QPushButton::clicked,this,&MainInterface::PushBotton_12);// * connect(pb+12,&QPushButton::clicked,this,&MainInterface::PushBotton_13);// 7 connect(pb+13,&QPushButton::clicked,this,&MainInterface::PushBotton_14);// 8 connect(pb+14,&QPushButton::clicked,this,&MainInterface::PushBotton_15);// 9 connect(pb+15,&QPushButton::clicked,this,&MainInterface::PushBotton_16);// / connect(pb+16,&QPushButton::clicked,this,&MainInterface::PushBotton_17);// C } //清空所有属性 void MainInterface::Empty() { num1 = 0; num2 = 0; res = 0; TempNum = 0; PointNUm = 0; IntNum = 0; c =10; countnum = 1; C_num = ' '; pl[0].clear(); pl[1].setText("0"); } //把对应的值给num1和num2 void MainInterface::InputNum(double a) { //第一个数 if(1 == countnum) { //点击了按钮 Isclicked = 1; //将按钮按下的数组成第一个数 if(C_num == '.') { PointNUm =PointNUm*10 +a; num1 = IntNum + PointNUm/c; c = c*10; } else { IntNum = IntNum * 10 + a; num1 = IntNum; } //将这个数显示到主标签中 pl[1].setNum(num1); } //第二个数 if(2 == countnum) { //点击了按钮 Isclicked2 = 1; //将按钮按下的数组成第二个数 if(C_num == '.') { PointNUm =PointNUm *10 +a; num2 = IntNum + PointNUm/c; c = c*10; } else { IntNum = IntNum * 10 + a; num2 = IntNum; } //将这个数显示到主标签中 pl[1].setNum(num2); } } void MainInterface::InputChar(char f) { C_num = f; QString s; if(1 == countnum) { switch(f) { case '=': { //判断是否点击了，没有点任何按钮，说明第一个数没有更新，就显示没更新过的数 if(Isclicked == 0) { s.sprintf("%lg = ",TempNum); pl[0].setText(s); } else //说明第一个数更新了，显示更新的数 { s.sprintf("%lg = ",num1); pl[0].setText(s); //将第一个数暂存到一个未更新过的数中 TempNum = num1; //将第一个数置0 num1 = 0; //点击状态设置为未点击 Isclicked = 0; } break; } case '+': s.sprintf("%lg + ",num1); break; case '-': s.sprintf("%lg - ",num1); break; case 'x': s.sprintf("%lg x ",num1); break; case '/': s.sprintf("%lg / ",num1); break; } if(f != '=') { PointNUm = 0; c = 10; TempC = f; IntNum = 0; pl[0].setText(s); countnum = 2; } return; } if(2 == countnum) { switch (TempC) { case '+':res = num1 + num2;break; case '-':res = num1 - num2;break; case 'x':res = num1 * num2;break; case '/':res = num1 / num2;break; } switch(f) { case '=': { if(Isclicked2 == 0) { s.sprintf("%lg %c %lg =",num1,TempC,num2); pl[0].setText(s); pl[1].setNum(res); num1 = res; } else { s.sprintf("%lg %c %lg =",num1,TempC,num2); pl[0].setText(s); pl[1].setNum(res); num1 = res; Isclicked2 = 0; } break; } case '+': { num1 = res; s.sprintf("%lg + ",num1); } break; case '-': { num1 = res; s.sprintf("%lg - ",num1); } break; case 'x': { num1 = res; s.sprintf("%lg x ",num1); } break; case '/': { num1 = res; s.sprintf("%lg / ",num1); } break; } if(f != '=') { PointNUm = 0; c = 10; TempC = f; IntNum = 0; num2 = 0; pl[0].setText(s); } return; } } MainInterface::