30.QT IDE编写

• mainwindow.h

    1 #ifndef MAINWINDOW_H
    2 #define MAINWINDOW_H
    3 
    4 #include <QMainWindow>
    5 #include <QTextEdit>
    6 #include <QMenu>
    7 #include <QMenuBar>
    8 #include <QAction>
    9 #include <QFileDialog>
   10 #include <QMessageBox>
   11 #include <iostream>
   12 #include <fstream>
   13 #include <cstdlib>
   14 
   15 #include <QImage>
   16 #include <QLabel>
   17 #include <QMenu>
   18 #include <QMenuBar>
   19 #include <QComboBox>
   20 #include <QSpinBox>
   21 #include <QToolBar>
   22 #include <QFontComboBox>
   23 #include <QToolButton>
   24 #include <QTextCharFormat>
   25 using namespace std;
   26 
   27 namespace Ui {
   28 class MainWindow;
   29 }
   30 
   31 class MainWindow : public QMainWindow
   32 {
   33     Q_OBJECT
   34 
   35 public:
   36     explicit MainWindow(QWidget *parent = 0);
   37     ~MainWindow();
   38     void createActions();
   39     void createMenus();
   40     void createToolBars();
   41 
   42 private:
   43     Ui::MainWindow *ui;
   44     QString filename;
   45     //文本编辑
   46     QTextEdit *text;
   47     //菜单
   48     QMenu *file;
   49         //菜单选项
   50         QAction *Afile_open;
   51         QAction *Afile_close;
   52         QAction *Afile_save;
   53         QAction *Afile_exit;
   54 
   55     QMenu *edit;
   56         QAction *Afile_selall;
   57         QAction *Afile_cut;
   58         QAction *Afile_copy;
   59         QAction *Afile_paste;
   60 
   61     QMenu *build;
   62         QAction *Abuild_it;
   63         QAction *Abuild_andrun;
   64 
   65     QMenu *about;
   66         QAction *Aabout_it;
   67 
   68 private:
   69         QMenu *fileMenu;                                   //各项菜单栏
   70             QMenu *zoomMenu;
   71             QMenu *rotateMenu;
   72             QMenu *mirrorMenu;
   73 
   74             QImage img;
   75             QString fileName;
   76             //编辑显示窗口
   77            // ShowWidget *showWidget;
   78 
   79             QAction *openFileAction;                         //文件菜单项
   80             QAction *NewFileAction;
   81             QAction *PrintTextAction;
   82             QAction *PrintImageAction;
   83             QAction *exitAction;
   84 
   85             QAction *copyAction;                              //编辑菜单项
   86             QAction *cutAction;
   87             QAction *pasteAction;
   88             QAction *aboutAction;
   89             QAction *zoomInAction;
   90             QAction *zoomOutAction;
   91 
   92             QAction *rotate90Action;                         //旋转菜单项
   93             QAction *rotate180Action;
   94             QAction *rotate270Action;
   95 
   96             QAction *mirrorVerticalAction;                  //镜像菜单项
   97             QAction *mirrorHorizontalAction;
   98 
   99             QAction *undoAction;
  100             QAction *redoAction;
  101 
  102             QToolBar *fileTool;                              //工具栏
  103             QToolBar *zoomTool;
  104             QToolBar *rotateTool;
  105             QToolBar *mirrorTool;
  106 
  107             QToolBar *doToolBar;
  108 
  109             QLabel *fontLabel1;                             //字体设置项
  110             QFontComboBox *fontComboBox;
  111             QLabel *fontLabel2;
  112             QComboBox *sizeComboBox;
  113             QToolButton *boldBtn;
  114             QToolButton *italicBtn;
  115             QToolButton *underlineBtn;
  116             QToolButton *colorBtn;
  117 
  118             QToolBar *fontToolBar;                          //字体工具栏
  119 
  120             QLabel *listLabel;                              //排序设置项
  121             QComboBox *listComboBox;
  122             QActionGroup *actGrp;
  123             QAction *leftAction;
  124             QAction *rightAction;
  125             QAction *centerAction;
  126             QAction *justifyAction;
  127 
  128             QToolBar *listToolBar;                          //排序工具栏
  129 private slots:
  130     void file_open();
  131     void file_close();
  132     void file_save();
  133     void file_exit();
  134     void file_selall();
  135     void file_cut();
  136     void file_copy();
  137     void file_paste();
  138     void build_it();
  139     void build_andrun();
  140     void about_it();
  141 
  142 };
  143 
  144 #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 
    9     ui->setupUi(this);
   10     //设置文本编辑器
   11     text = new QTextEdit;
   12     QFont font;
   13     font.setPixelSize(30);
   14     text->setFont(font);
   15     QColor qcolor;
   16     qcolor.setRgb(255,255,255);
   17     this->setCentralWidget(text);
   18 
   19     //设置菜单
   20     file = this->menuBar()->addMenu("文件");
   21     edit = this->menuBar()->addMenu("编辑");
   22     build = this->menuBar()->addMenu("构建");
   23     about = this->menuBar()->addMenu("关于");
   24 
   25     //about菜单
   26     {
   27         Aabout_it = new QAction("关于",this);
   28         about->addAction(Aabout_it);
   29         connect(Aabout_it,SIGNAL(triggered(bool)),this,SLOT(about_it()));
   30     }
   31 
   32     //open菜单
   33     {
   34         Afile_open = new QAction("打开文件",this);
   35         file->addAction(Afile_open);
   36         connect(Afile_open,SIGNAL(triggered(bool)),this,SLOT(file_open()));
   37 
   38         Afile_close = new QAction("关闭文件",this);
   39         file->addAction(Afile_close);
   40         connect(Afile_close,SIGNAL(triggered(bool)),this,SLOT(file_close()));
   41 
   42         Afile_save = new QAction("保存文件",this);
   43         file->addAction(Afile_save);
   44         connect( Afile_save,SIGNAL(triggered(bool)),this,SLOT(file_save()));
   45 
   46         Afile_exit = new QAction("退出",this);
   47         file->addAction(Afile_exit);
   48         connect(Afile_exit,SIGNAL(triggered(bool)),this,SLOT(file_exit()));
   49     }
   50 
   51     //编辑菜单
   52     {
   53         Afile_selall = new QAction("全选",this);
   54         edit->addAction(Afile_selall);
   55         connect(Afile_selall,SIGNAL(triggered(bool)),this,SLOT(file_selall()));
   56 
   57         Afile_cut = new QAction("剪切",this);
   58         edit->addAction(Afile_cut);
   59         connect(Afile_cut,SIGNAL(triggered(bool)),this,SLOT(file_cut()));
   60 
   61         Afile_copy = new QAction("复制",this);
   62         edit->addAction(Afile_copy);
   63         connect(Afile_copy,SIGNAL(triggered(bool)),this,SLOT(file_copy()));
   64 
   65         Afile_paste = new QAction("粘贴",this);
   66         edit->addAction(Afile_paste);
   67         connect(Afile_paste,SIGNAL(triggered(bool)),this,SLOT(file_paste()));
   68     }
   69 
   70     {
   71         Abuild_it = new QAction("编译",this);
   72         build->addAction(Abuild_it);
   73         connect(Abuild_it,SIGNAL(triggered(bool)),this,SLOT(build_it()));
   74 
   75         Abuild_andrun = new QAction("编译执行",this);
   76         build->addAction(Abuild_andrun);
   77         connect(Abuild_andrun,SIGNAL(triggered(bool)),this,SLOT(build_andrun()));
   78     }
   79 
   80     this->setWindowTitle("简易编译器");
   81 
   82     //showWidget =new ShowWidget(this);
   83      //   setCentralWidget(showWidget);
   84         //在工具栏上嵌入控件
   85         //设置字体
   86         fontLabel1 =new QLabel(tr("字体:"));
   87         fontComboBox =new QFontComboBox;
   88         fontComboBox->setFontFilters(QFontComboBox::ScalableFonts);
   89 
   90         fontLabel2 =new QLabel(tr("字号:"));
   91         sizeComboBox =new QComboBox;
   92         QFontDatabase db;
   93         foreach(int size,db.standardSizes())
   94             sizeComboBox->addItem(QString::number(size));
   95 
   96         boldBtn =new QToolButton;
   97         boldBtn->setIcon(QIcon("bold.png"));
   98         boldBtn->setCheckable(true);
   99         italicBtn =new QToolButton;
  100         italicBtn->setIcon(QIcon("italic.png"));
  101         italicBtn->setCheckable(true);
  102 
  103         underlineBtn =new QToolButton;
  104         underlineBtn->setIcon(QIcon("underline.png"));
  105         underlineBtn->setCheckable(true);
  106 
  107         colorBtn =new QToolButton;
  108         colorBtn->setIcon(QIcon("color.png"));
  109         colorBtn->setCheckable(true);
  110 
  111         //排序
  112         listLabel =new QLabel(tr("排序"));
  113         listComboBox =new QComboBox;
  114         listComboBox->addItem("Standard");
  115         listComboBox->addItem("QTextListFormat::ListDisc");
  116         listComboBox->addItem("QTextListFormat::ListCircle");
  117         listComboBox->addItem("QTextListFormat::ListSquare");
  118         listComboBox->addItem("QTextListFormat::ListDecimal");
  119         listComboBox->addItem("QTextListFormat::ListLowerAlpha");
  120         listComboBox->addItem("QTextListFormat::ListUpperAlpha");
  121         listComboBox->addItem("QTextListFormat::ListLowerRoman");
  122         listComboBox->addItem("QTextListFormat::ListUpperRoman");
  123 
  124         createActions();
  125         createMenus();
  126         createToolBars();
  127 
  128         if(img.load("image.png"))
  129         {
  130             //showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
  131         }
  132 
  133 }
  134 
  135 MainWindow::~MainWindow()
  136 {
  137     delete ui;
  138 }
  139 
  140 void MainWindow::file_open()
  141 {
  142     filename =QFileDialog::getOpenFileName(this,"hello","*.*");
  143     if(filename.isEmpty())
  144     {
  145         QMessageBox::information(this,"提示","注意选择一个文件");
  146         return;
  147     }
  148     fstream fin(filename.toStdString().c_str());
  149     if(!fin)
  150     {
  151         QMessageBox::information(this,"提示","打开文件失败");
  152         return;
  153     }
  154 
  155     while(!fin.eof())
  156     {
  157         char buf[2014]={0};
  158         fin.getline(buf,2014);
  159         text->append(buf);
  160     }
  161     fin.close();
  162 }
  163 
  164 void MainWindow::file_close()
  165 {
  166     text->setText("");
  167     filename ="";
  168 }
  169 
  170 void MainWindow::file_save()
  171 {
  172     filename = QFileDialog::getSaveFileName();
  173     if(filename.isEmpty())
  174     {
  175         QMessageBox::information(this,"提示","打开文件失败");
  176         return;
  177     }
  178 
  179     QString info =text->toPlainText().toStdString().c_str();
  180     //写入
  181     ofstream fout(filename.toStdString().c_str());
  182     if(!fout)
  183     {
  184         QMessageBox::information(this,"提示","打开文件失败");
  185         return;
  186     }
  187     fout.write(info.toStdString().c_str(),strlen(info.toStdString().c_str()));
  188     fout.close();
  189 }
  190 
  191 void MainWindow::file_exit()
  192 {
  193     exit(0);
  194 }
  195 
  196 void MainWindow::file_selall()
  197 {
  198     text->selectAll();
  199 }
  200 
  201 void MainWindow::file_cut()
  202 {
  203     text->cut();
  204 }
  205 
  206 void MainWindow::file_copy()
  207 {
  208     text->copy();
  209 }
  210 
  211 void MainWindow::file_paste()
  212 {
  213     text->paste();
  214 }
  215 
  216 void MainWindow::build_it()
  217 {
  218     QString destexename = filename;
  219     bool iscpp = destexename.contains(".cpp");
  220     QString cmd;
  221     if(iscpp)
  222     {
  223         destexename.replace(".cpp",".exe");
  224         cmd = "g++ -o " + destexename+" " +filename;
  225     }
  226     else
  227     {
  228         destexename.replace(".c",".exe");
  229         cmd = "gcc -o "+destexename+" "+filename;
  230     }
  231     system(cmd.toStdString().c_str());
  232 }
  233 
  234 void MainWindow::build_andrun()
  235 {
  236     QString destexename = filename;
  237     bool iscpp = destexename.contains(".cpp");
  238     QString cmd;
  239     if(iscpp)
  240     {
  241         destexename.replace(".cpp",".exe");
  242         cmd = "g++ -o "+filename+" "+destexename;
  243     }
  244     else
  245     {
  246         destexename.replace(".c",".exe");
  247         cmd = "gcc -o "+filename+" "+destexename;
  248     }
  249     system(cmd.toStdString().c_str());
  250 
  251     system(destexename.toStdString().c_str());
  252 }
  253 
  254 void MainWindow::about_it()
  255 {
  256     QMessageBox::information(this,"hello","版权所有,盗版不究");
  257 }
  258 
  259 void MainWindow::createActions()
  260 {
  261     //"打开"动作
  262     openFileAction =new QAction(QIcon("open.png"),tr("打开"),this);
  263     openFileAction->setShortcut(tr("Ctrl+O"));
  264     openFileAction->setStatusTip(tr("打开一个文件"));
  265    // connect(openFileAction,SIGNAL(triggered()),this,SLOT(ShowOpenFile()));
  266 
  267     //"新建"动作
  268     NewFileAction =new QAction(QIcon("new.png"),tr("新建"),this);
  269     NewFileAction->setShortcut(tr("Ctrl+N"));
  270     NewFileAction->setStatusTip(tr("新建一个文件"));
  271     //connect(NewFileAction,SIGNAL(triggered()),this,SLOT(ShowNewFile()));
  272 
  273     //"退出"动作
  274     exitAction =new QAction(tr("退出"),this);
  275     exitAction->setShortcut(tr("Ctrl+Q"));
  276     exitAction->setStatusTip(tr("退出程序"));
  277     //connect(exitAction,SIGNAL(triggered()),this,SLOT(close()));
  278 
  279     //"复制"动作
  280     copyAction =new QAction(QIcon("copy.png"),tr("复制"),this);
  281     copyAction->setShortcut(tr("Ctrl+C"));
  282     copyAction->setStatusTip(tr("复制文件"));
  283    // connect(copyAction,SIGNAL(triggered()),showWidget->text,SLOT(copy()));
  284 
  285     //"剪切"动作
  286     cutAction =new QAction(QIcon("cut.png"),tr("剪切"),this);
  287     cutAction->setShortcut(tr("Ctrl+X"));
  288     cutAction->setStatusTip(tr("剪切文件"));
  289     //connect(cutAction,SIGNAL(triggered()),showWidget->text,SLOT(cut()));
  290 
  291     //"粘贴"动作
  292     pasteAction =new QAction(QIcon("paste.png"),tr("粘贴"),this);
  293     pasteAction->setShortcut(tr("Ctrl+V"));
  294     pasteAction->setStatusTip(tr("粘贴文件"));
  295   //  connect(pasteAction,SIGNAL(triggered()),showWidget->text,SLOT(paste()));
  296 
  297     //"关于"动作
  298     aboutAction =new QAction(tr("关于"),this);
  299    // connect(aboutAction,SIGNAL(triggered()),this,SLOT(QApplication::aboutQt()));
  300 
  301     //"打印文本"动作
  302     PrintTextAction =new QAction(QIcon("printText.png"),tr("打印文本"), this);
  303     PrintTextAction->setStatusTip(tr("打印一个文本"));
  304    // connect(PrintTextAction,SIGNAL(triggered()),this,SLOT(ShowPrintText()));
  305 
  306     //"打印图像"动作
  307     PrintImageAction =new QAction(QIcon("printImage.png"),tr("打印图像"), this);
  308     PrintImageAction->setStatusTip(tr("打印一幅图像"));
  309   //  connect(PrintImageAction,SIGNAL(triggered()),this,SLOT(ShowPrintImage()));
  310 
  311     //"放大"动作
  312     zoomInAction =new QAction(QIcon("zoomin.png"),tr("放大"),this);
  313     zoomInAction->setStatusTip(tr("放大一张图片"));
  314    // connect(zoomInAction,SIGNAL(triggered()),this,SLOT(ShowZoomIn()));
  315 
  316     //"缩小"动作
  317     zoomOutAction =new QAction(QIcon("zoomout.png"),tr("缩小"),this);
  318     zoomOutAction->setStatusTip(tr("缩小一张图片"));
  319    // connect(zoomOutAction,SIGNAL(triggered()),this,SLOT(ShowZoomOut()));
  320 
  321     //实现图像旋转的动作（Action）
  322     //旋转90°
  323     rotate90Action =new QAction(QIcon("rotate90.png"),tr("旋转90°"),this);
  324     rotate90Action->setStatusTip(tr("将一幅图旋转90°"));
  325    // connect(rotate90Action,SIGNAL(triggered()),this,SLOT(ShowRotate90()));
  326 
  327     //旋转180°
  328     rotate180Action =new QAction(QIcon("rotate180.png"),tr("旋转180°"), this);
  329     rotate180Action->setStatusTip(tr("将一幅图旋转180°"));
  330     connect(rotate180Action,SIGNAL(triggered()),this,SLOT(ShowRotate180()));
  331 
  332     //旋转270°
  333     rotate270Action =new QAction(QIcon("rotate270.png"),tr("旋转270°"), this);
  334     rotate270Action->setStatusTip(tr("将一幅图旋转270°"));
  335    // connect(rotate270Action,SIGNAL(triggered()),this,SLOT(ShowRotate270()));
  336 
  337     //实现图像镜像的动作（Action）
  338     //纵向镜像
  339     mirrorVerticalAction =new QAction(tr ("纵向镜像"),this);
  340     mirrorVerticalAction->setStatusTip(tr("对一张图作纵向镜像"));
  341    // connect(mirrorVerticalAction,SIGNAL(triggered()),this,SLOT(ShowMirrorVertical()));
  342 
  343     //横向镜像
  344     mirrorHorizontalAction =new QAction(tr("横向镜像"),this);
  345     mirrorHorizontalAction->setStatusTip(tr("对一张图作横向镜像"));
  346     //connect(mirrorHorizontalAction,SIGNAL(triggered()),this,SLOT(ShowMirrorHorizontal()));
  347 
  348     //排序:左对齐、右对齐、居中和两端对齐
  349     actGrp =new QActionGroup(this);
  350 
  351     leftAction =new QAction(QIcon("left.png"),"左对齐",actGrp);
  352     leftAction->setCheckable(true);
  353 
  354     rightAction =new QAction(QIcon("right.png"),"右对齐",actGrp);
  355     rightAction->setCheckable(true);
  356 
  357     centerAction =new QAction(QIcon("center.png"),"居中",actGrp);
  358     centerAction->setCheckable(true);
  359 
  360     justifyAction =new QAction(QIcon("justify.png"),"两端对齐",actGrp);
  361     justifyAction->setCheckable(true);
  362 
  363    // connect(actGrp,SIGNAL(triggered(QAction*)),this,SLOT(ShowAlignment(QAction*)));
  364 
  365     //实现撤销和重做的动作（Action）
  366     //撤销和重做
  367     undoAction =new QAction(QIcon("undo.png"),"撤销",this);
  368    // connect(undoAction,SIGNAL(triggered()),showWidget->text,SLOT(undo()));
  369     redoAction =new QAction(QIcon("redo.png"),"重做",this);
  370     //connect(redoAction,SIGNAL(triggered()),showWidget->text,SLOT(redo()));
  371 }
  372 
  373 void MainWindow::createMenus()
  374 {
  375     //文件菜单
  376     fileMenu =menuBar()->addMenu(tr("文件"));
  377     fileMenu->addAction(openFileAction);
  378     fileMenu->addAction(NewFileAction);
  379     fileMenu->addAction(PrintTextAction);
  380     fileMenu->addAction(PrintImageAction);
  381     fileMenu->addSeparator();
  382     fileMenu->addAction(exitAction);
  383 
  384     //缩放菜单
  385     zoomMenu =menuBar()->addMenu(tr("编辑"));
  386     zoomMenu->addAction(copyAction);
  387     zoomMenu->addAction(cutAction);
  388     zoomMenu->addAction(pasteAction);
  389     zoomMenu->addAction(aboutAction);
  390     zoomMenu->addSeparator();
  391     zoomMenu->addAction(zoomInAction);
  392     zoomMenu->addAction(zoomOutAction);
  393 
  394     //旋转菜单
  395     rotateMenu =menuBar()->addMenu(tr("旋转"));
  396     rotateMenu->addAction(rotate90Action);
  397     rotateMenu->addAction(rotate180Action);
  398     rotateMenu->addAction(rotate270Action);
  399 
  400     //镜像菜单
  401     mirrorMenu =menuBar()->addMenu(tr("镜像"));
  402     mirrorMenu->addAction(mirrorVerticalAction);
  403     mirrorMenu->addAction(mirrorHorizontalAction);
  404 }
  405 
  406 void MainWindow::createToolBars()
  407 {
  408     //文件工具条
  409     fileTool =addToolBar("File");
  410     fileTool->addAction(openFileAction);
  411     fileTool->addAction(NewFileAction);
  412     fileTool->addAction(PrintTextAction);
  413     fileTool->addAction(PrintImageAction);
  414 
  415     //编辑工具条
  416     zoomTool =addToolBar("Edit");
  417     zoomTool->addAction(copyAction);
  418     zoomTool->addAction(cutAction);
  419     zoomTool->addAction(pasteAction);
  420     zoomTool->addSeparator();
  421     zoomTool->addAction(zoomInAction);
  422     zoomTool->addAction(zoomOutAction);
  423 
  424     //旋转工具条
  425     rotateTool =addToolBar("rotate");
  426     rotateTool->addAction(rotate90Action);
  427     rotateTool->addAction(rotate180Action);
  428     rotateTool->addAction(rotate270Action);
  429 
  430     //撤销和重做工具条
  431     doToolBar =addToolBar("doEdit");
  432     doToolBar->addAction(undoAction);
  433     doToolBar->addAction(redoAction);
  434 
  435     //字体工具条
  436     fontToolBar =addToolBar("Font");
  437     fontToolBar->addWidget(fontLabel1);
  438     fontToolBar->addWidget(fontComboBox);
  439     fontToolBar->addWidget(fontLabel2);
  440     fontToolBar->addWidget(sizeComboBox);
  441     fontToolBar->addSeparator();
  442     fontToolBar->addWidget(boldBtn);
  443     fontToolBar->addWidget(italicBtn);
  444     fontToolBar->addWidget(underlineBtn);
  445     fontToolBar->addSeparator();
  446     fontToolBar->addWidget(colorBtn);
  447 
  448     //排序工具条
  449     listToolBar =addToolBar("list");
  450     listToolBar->addWidget(listLabel);
  451     listToolBar->addWidget(listComboBox);
  452     listToolBar->addSeparator();
  453     listToolBar->addActions(actGrp->actions());
  454 }

   

• main.cpp

   1 #include "mainwindow.h"
   2 #include <QApplication>
   3 
   4 
   5 int main(int argc, char *argv[])
   6 {
   7     QApplication a(argc, argv);
   8     MainWindow w;
   9     w.show();
  10     w.resize(1024,768);
  11     return a.exec();
  12 }