Rich text tables, lists, pictures

One 、 To create mianWindows.h Add slot function

 
private slots:
void insertTable();// Insert table 
    void insertList();// Insert the list 
    void insertImage();// Insert a picture 

Function implementation ：

void MainWindow::insertTable()
{
    //QTextDocument* document=ui->textEdit->document();// Returns the text object of the current editing area 
    QTextCursor cursor=ui->textEdit->textCursor();
    QTextTableFormat format;// Define a table format object 
    format.setCellSpacing(2);// Set the outer distance 
    format.setCellPadding(10);// Set the inner margin of the table 
    cursor.insertTable(3,3,format);// Create a self - defined 3 That's ok 3 List grid style 

}

void MainWindow::insertList()
{
    QTextListFormat format;
    format.setStyle(QTextListFormat::ListDecimal);// The linked list format is set to the form of digital linked list 
    ui->textEdit->textCursor().insertList(format);// Put the text linked list format into the settings 

}

void MainWindow::insertImage()
{
    QString filepath=QFileDialog::getOpenFileName(this,
                                              " Select Picture ",
                                              ".",
                                              "JPGE(*.jpg *jpeg);;"
                                              "GIF(*.gif);;"
                                              "PNG(*.png)");
    QUrl url(QString("file:://%1").arg(filepath));
    QImage image=QImageReader(filepath).read();

    QTextDocument* document=ui->textEdit->document();
    // When adding picture resources 
    document->addResource(QTextDocument::ImageResource,url,QVariant(image));

    QTextCursor cursor=ui->textEdit->textCursor();
    QTextImageFormat imageFormat;
    imageFormat.setWidth(image.width());
    imageFormat.setWidth(image.height());
    imageFormat.setName(url.toString());
    cursor.insertImage(imageFormat);
}

insertTable The function first defines a cursor , Get the text information of the current cursor . Defining a table format object ,format Set the outer and inner margins . recycling insertTable Cursor object function , Realize custom formatting , The first and second parameters are rows and columns , The third parameter is format .

insertList Function is to define a linked list format object , Using style Function to set the format to the format of the number linked list , Call next textCusor Function to get cursor information , Calling insertList Function to truly set the linked list format of the text editing area .

insertImage Function is to call the file box function to get the path name of the file , recycling Qurl Define an object , Transfer the file name to encoded form .

Then define a QImage Object utilization QImageReader Function to read pictures . Then use the obtained text object document Add resources . The next step is to format the image .

mianWindows Add code to the constructor of ：

    // Add table 、 list 、 Add images Action
    QAction *action_textTable=new QAction(" form ",this);
    QAction *action_textList=new QAction(" Linked list ",this);
    QAction *action_textImage=new QAction(" picture ",this);
    connect(action_textTable,&QAction::triggered,this,&MainWindow::insertTable);
    connect(action_textList,&QAction::triggered,this,&MainWindow::insertList);
    connect(action_textImage,&QAction::triggered,this,&MainWindow::insertImage);
    // Toolbar add button 
    ui->mainToolBar->addAction(action_textTable);
    ui->mainToolBar->addAction(action_textList);
    ui->mainToolBar->addAction(action_textImage);

Create a connection between the three parts and their own defined slot function , Click to trigger implementation .

Program effect ：