98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
#include "mainwindow.h"
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MainWindow::MainWindow(QWidget *parent)
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: QMainWindow(parent)
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{
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setWindowTitle("简单记事");
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setFixedSize(800,600);
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QPixmap window_icon;
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window_icon.load(":logo");
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setWindowIcon(QIcon(window_icon));
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menu_bar = new QMenuBar(this); // 父组件为当前 MainWindow
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setMenuBar(menu_bar);
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menu1 = new QMenu("文件",menu_bar); // 父组件为 menu_bar
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openAction = new QAction("打开",menu1); // 父组件为 menu1
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saveAction = new QAction("保存",menu1);
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exitAction = new QAction("退出",menu1);
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openAction->setShortcut(QKeySequence(tr("ctrl+o"))); // 快捷键绑定
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saveAction->setShortcut(QKeySequence(Qt::CTRL+Qt::Key_S));
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exitAction->setShortcut(QKeySequence(tr("ctrl+q")));
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connect(openAction,&QAction::triggered,[&]{ // 事件绑定
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qDebug()<<"打开...";
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// 打开文件
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QString file_path = QFileDialog::getOpenFileName(this,"打开文件",".","Text(*.txt);;Markdown(*.md)");
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QFile file(file_path);
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if(!file.open(QIODevice::ReadOnly|QIODevice::Text)){
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QMessageBox::critical(this,"错误","文件路径 "+file_path+" 打开错误");
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return; // 提前返回
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}
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QTextStream in(&file);
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text_edit->setMarkdown(in.readAll());
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file.close();
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});
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connect(saveAction,&QAction::triggered,[&]{
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qDebug()<<"保存...";
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QString file_path = QFileDialog::getSaveFileName(this,"保存文件",".","Markdown(*.md)");
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QFile file(file_path);
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if(!file.open(QIODevice::WriteOnly|QIODevice::Text)){
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QMessageBox::critical(this,"错误","文件路径 "+file_path+"无法保存");
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return;
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}
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QTextStream out(&file);
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out << text_edit->toMarkdown();
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file.close();
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});
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connect(exitAction,&QAction::triggered,[&]{
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qDebug()<<"退出...";
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this->close();
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});
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openAction->setIcon(QIcon(":open"));
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saveAction->setIcon(QIcon(":save"));
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menu1->addAction(openAction);
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menu1->addAction(saveAction);
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menu1->addAction(exitAction);
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menu2 = new QMenu("编辑",menu_bar);
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menu3 = new QMenu("查看",menu_bar);
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menu4 = new QMenu("关于",menu_bar);
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aboutAction = new QAction("关于软件",menu4);
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aboutQtAction = new QAction("关于Qt",menu4);
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connect(aboutAction,&QAction::triggered,[&]{
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QMessageBox::about(this,"简单记事","这是一个简单的记事本");
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});
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connect(aboutQtAction,&QAction::triggered,[&]{
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QMessageBox::aboutQt(this);
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});
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menu4->addAction(aboutAction);
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menu4->addAction(aboutQtAction);
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menu_bar->addMenu(menu1);
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menu_bar->addMenu(menu2);
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menu_bar->addMenu(menu3);
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menu_bar->addMenu(menu4);
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status_bar = new QStatusBar(this);
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QLabel *left_status_label = new QLabel("行4 列19",status_bar);
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QLabel *right_status_label = new QLabel("utf-8",status_bar);
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status_bar->addWidget(left_status_label);
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status_bar->addPermanentWidget(right_status_label); // 添加永久小部件
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setStatusBar(status_bar);
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text_edit = new QTextEdit("文本区占位符",this);
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setCentralWidget(text_edit);
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}
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MainWindow::~MainWindow()
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{
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}
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