• 基于Qt实现文本编辑器功能

    一、头文件：

    1. #ifndef IMGPROCESSOR_H
    2. #define IMGPROCESSOR_H
    3.  
    4. #if _MSC_VER >= 1600
    5. #pragma execution_character_set("utf-8")
    6. #endif
    7.  
    8. #include 
    9. #include 
    10. #include 
    11. #include 
    12. #include 
    13. #include 
    14. #include 
    15. #include 
    16. #include 
    17. #include 
    18. #include 
    19. #include 
    20. #include "showwidget.h"
    21.  
    22. class ImgProcessor : public QMainWindow
    23. {
    24.     Q_OBJECT
    25.  
    26. public:
    27.     ImgProcessor(QWidget *parent = nullptr);
    28.     ~ImgProcessor();
    29.     void createActions();
    30.     void createMenus();
    31.     void createToolBars();
    32.     void loadFile(QString filename);
    33.     void mergeFormat(QTextCharFormat);
    34.  
    35. private:
    36.     QMenu *fileMenu;
    37.     QMenu *zoomMenu;
    38.     QMenu *rotateMenu;
    39.     QMenu *mirrorMenu;
    40.     QImage img;
    41.     QString fileName;
    42.  
    43.     ShowWidget *showWidget;
    44.     QAction *openFileAction;
    45.     QAction *newFileAction;
    46.     QAction *printTextAction;
    47.     QAction *printImageAction;
    48.     QAction *exitAction;
    49.     QAction *copyAction;
    50.     QAction *cutAction;
    51.     QAction *pasteAction;
    52.     QAction *aboutAction;
    53.     QAction *zoomInAction;
    54.     QAction *zoomOutAction;
    55.     QAction *rotate90Action;
    56.     QAction *rotate180Action;
    57.     QAction *rotate270Action;
    58.  
    59.     //镜像菜单项
    60.     QAction *mirrorVerticalAction;
    61.     QAction *mirrorHorizontalAction;
    62.     QAction *undoAction;
    63.     QAction *redoAction;
    64.  
    65.     //工具栏
    66.     QToolBar *fileTool;
    67.     QToolBar *zoomTool;
    68.     QToolBar *rotateTool;
    69.     QToolBar *mirrorTool;
    70.     QToolBar *doToolBar;
    71.  
    72.     //字体设置项
    73.     QLabel *fontLabel1;
    74.     QFontComboBox *fontComboBox;
    75.     QLabel *fontLabel2;
    76.     QComboBox *sizeComboBox;
    77.     QToolButton *boldBtn;
    78.     QToolButton *italicBtn;
    79.     QToolButton *underlineBtn;
    80.     QToolButton *colorBtn;
    81.  
    82.     QToolBar *fontToolBar;      //字体工具栏
    83.     QToolBar *listToolBar;     //排序工具栏
    84.  
    85.     //排序设置项
    86.     QLabel *listLabel;
    87.     QComboBox *listComboBox;
    88.     QActionGroup *actGrp;
    89.     QAction *leftAction;
    90.     QAction *rightAction;
    91.     QAction *centerAction;
    92.     QAction *justifyAction;
    93.  
    94.  
    95. protected slots:
    96.     void ShowNewFile();
    97.     void ShowOpenFile();
    98.     void ShowPrintText();
    99.     void ShowPrintImage();
    100.     void ShowZoomIn();
    101.     void ShowZoomOut();
    102.     void ShowRotate90();
    103.     void ShowRotate180();
    104.     void ShowRotate270();
    105.     void ShowMirrorVertical();
    106.     void ShowMirrorHorizontal();
    107.     void ShowFontComboBox(QString comboStr);
    108.     void ShowSizeSpinBox(QString spinValue);
    109.     void ShowBoldBtn();
    110.     void ShowItalicBtn();
    111.     void ShowUnderlineBtn();
    112.     void ShowColorBtn();
    113.     void ShowCurrentFormatChanged(const QTextCharFormat &fmt);
    114.     void ShowList(int);
    115.     void ShowAlignment(QAction *act);
    116.     void ShowCursorPositionChanged();
    117. };
    118. #endif // IMGPROCESSOR_H

    二、源文件

    1. #include "imgprocessor.h"
    2.  
    3. #include 
    4.  
    5. #include 
    6. #include 
    7. #include 
    8. #include 
    9. #include 
    10. #include 
    11. #include 
    12. #include 
    13. #include 
    14.  
    15. ImgProcessor::ImgProcessor(QWidget *parent)
    16.     : QMainWindow(parent)
    17. {
    18.     setWindowTitle(tr("Easy Word"));    //设置窗体标题
    19.     showWidget = new ShowWidget(this);
    20.     setCentralWidget(showWidget);
    21.  
    22.     //在工具栏上嵌入控件
    23.     //设置字体
    24.     fontLabel1 = new QLabel(tr("字体："));
    25.     fontComboBox = new QFontComboBox;
    26.     fontComboBox->setFontFilters(QFontComboBox::ScalableFonts);
    27.     fontLabel2 = new QLabel(tr("字号："));
    28.     sizeComboBox = new QComboBox;
    29.     QFontDatabase db;
    30.     foreach (int size, db.standardSizes()) {
    31.         sizeComboBox->addItem(QString::number(size));
    32.     }
    33.  
    34.     boldBtn = new QToolButton;
    35.     boldBtn->setIcon(QIcon("bold.png"));
    36.     boldBtn->setCheckable(true);
    37.  
    38.     italicBtn = new QToolButton;
    39.     italicBtn->setIcon(QIcon("italic.png"));
    40.     italicBtn->setCheckable(true);
    41.  
    42.     underlineBtn = new QToolButton;
    43.     underlineBtn->setIcon(QIcon("underline.png"));
    44.     underlineBtn->setCheckable(true);
    45.  
    46.     colorBtn = new QToolButton;
    47.     colorBtn->setIcon(QIcon("color.png"));
    48.     colorBtn->setCheckable(true);
    49.  
    50.     //排序
    51.     listLabel = new QLabel(tr("排序"));
    52.     listComboBox = new QComboBox;
    53.     listComboBox->addItem("Standard");
    54.     listComboBox->addItem("QTextListFormat::ListDisc");
    55.     listComboBox->addItem(&#
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  • 原文地址：https://blog.csdn.net/navymei10220214/article/details/127438567