Qt - WPS文本编辑器(WPS字体格式)

WPS字体格式

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mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>
#include "childwnd.h"
#include <QSignalMapper>
#include <QWidget>
#include <QMdiSubWindow>namespace Ui {class MainWindow;
}class MainWindow : public QMainWindow
{Q_OBJECTpublic:explicit MainWindow(QWidget *parent = 0);~MainWindow();void initMainWindow();void docNew();void docOpen();void docSave();void docSaveAs();void docUndo();void docRedo();void docCut();void docCopy();void docPaste();void textBold();void textItalic();void textUnderline();private slots:void on_newAction_triggered();void refreshMenus();void addSubWndListMenu();void on_closeAction_triggered();void on_closeAllAction_triggered();void on_titleAction_triggered();void on_cascadeAction_triggered();void on_nextAction_triggered();void on_previousAction_triggered();void setActiveSubWindow(QWidget *wnd);void on_openAction_triggered();void on_saveAction_triggered();void on_saveAsAction_triggered();void on_undoAction_triggered();void on_redoAction_triggered();void on_cutAction_triggered();void on_copyAction_triggered();void on_pasteAction_triggered();void on_boldAction_triggered();void on_italicAction_triggered();void on_underlineAction_triggered();protected:void closeEvent(QCloseEvent *event);private:void formatEnabled();ChildWnd* activateChildWnd();QMdiSubWindow *findChildWnd(const QString& docName);private:Ui::MainWindow *ui;QSignalMapper *m_WndMapper; //信号映射器};#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "childwnd.h"
#include <QFontDatabase>
#include <QMdiSubWindow>
#include <QCloseEvent>
#include <QFileDialog>MainWindow::MainWindow(QWidget *parent) :QMainWindow(parent),ui(new Ui::MainWindow)
{ui->setupUi(this);initMainWindow();
}MainWindow::~MainWindow()
{delete ui;
}void MainWindow::initMainWindow()
{//初始化字号列表项QFontDatabase fontdb;foreach(int fontsize, fontdb.standardSizes()){ui->sizeComboBox->addItem(QString::number(fontsize));}QFont defFont;    //当前应用程序默认的字体QString sFontSize;int defFontSize;  //当前应用程序默认字体的字号int defFontindex; //当前字号在组合框中的索引号defFont = QApplication::font();defFontSize = defFont.pointSize();sFontSize = QString::number(defFontSize);defFontindex = ui->sizeComboBox->findText(sFontSize);ui->sizeComboBox->setCurrentIndex(defFontindex);//设置多文档区域滚动条ui->mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);ui->mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);refreshMenus();connect(ui->mdiArea, &QMdiArea::subWindowActivated, this, &MainWindow::refreshMenus);addSubWndListMenu();connect(ui->menu_W, &QMenu::aboutToShow, this, &MainWindow::addSubWndListMenu);//创建信号映射器m_WndMapper = new QSignalMapper(this);connect(m_WndMapper, SIGNAL(mapped(QWidget*)), this, SLOT(setActiveSubWindow(QWidget*)));}void MainWindow::docNew()
{ChildWnd* childwnd = new ChildWnd;ui->mdiArea->addSubWindow(childwnd);connect(childwnd, SIGNAL(copyAvailable(bool)), ui->cutAction, SLOT(setEnabled(bool)));connect(childwnd, SIGNAL(copyAvailable(bool)), ui->copyAction, SLOT(setEnabled(bool)));childwnd->newDoc();childwnd->show();formatEnabled();
}void MainWindow::docOpen()
{QString docName = QFileDialog::getOpenFileName(this, "打开文档", "", "文本文件(*.txt);;HTML文件(*.html *.htm);;所有文件(*.*)");if (!docName.isEmpty()){QMdiSubWindow *existWnd = findChildWnd(docName);if (existWnd){ui->mdiArea->setActiveSubWindow(existWnd);return;}ChildWnd *childWnd = new ChildWnd;ui->mdiArea->addSubWindow(childWnd);connect(childWnd, SIGNAL(copyAvailable(bool)), ui->cutAction, SLOT(setEnabled(bool)));connect(childWnd, SIGNAL(copyAvailable(bool)), ui->copyAction, SLOT(setEnabled(bool)));if (childWnd->loadDoc(docName)){statusBar()->showMessage("文档已打开", 3000);childWnd->show();formatEnabled();}else{childWnd->close();}}
}void MainWindow::docSave()
{if (activateChildWnd() && activateChildWnd()->saveDoc()){statusBar()->showMessage("保存成功", 3000);}
}void MainWindow::docSaveAs()
{if (activateChildWnd() && activateChildWnd()->saveAsDoc()){statusBar()->showMessage("保存成功", 3000);}
}void MainWindow::docUndo()
{if (activateChildWnd()){activateChildWnd()->undo();}
}void MainWindow::docRedo()
{if (activateChildWnd())activateChildWnd()->redo();
}void MainWindow::docCut()
{if (activateChildWnd())activateChildWnd()->cut();
}void MainWindow::docCopy()
{if (activateChildWnd())activateChildWnd()->copy();
}void MainWindow::docPaste()
{if (activateChildWnd())activateChildWnd()->paste();
}void MainWindow::textBold()
{QTextCharFormat fmt;fmt.setFontWeight(ui->boldAction->isCheckable() ? QFont::Bold : QFont::Normal);if (activateChildWnd())activateChildWnd()->setFormatOnSelectedWord(fmt);
}void MainWindow::textItalic()
{QTextCharFormat fmt;fmt.setFontItalic(ui->italicAction->isChecked());if (activateChildWnd()){activateChildWnd()->setFormatOnSelectedWord(fmt);}
}void MainWindow::textUnderline()
{QTextCharFormat fmt;fmt.setFontUnderline(ui->underlineAction->isChecked());if (activateChildWnd()){activateChildWnd()->setFormatOnSelectedWord(fmt);}
}void MainWindow::on_newAction_triggered()
{docNew();
}void MainWindow::refreshMenus()
{bool hasChild;hasChild = (activateChildWnd() != 0);ui->saveAction->setEnabled(hasChild);ui->saveAsAction->setEnabled(hasChild);ui->printAction->setEnabled(hasChild);ui->printPreviewAction->setEnabled(hasChild);ui->pasteAction->setEnabled(hasChild);ui->closeAction->setEnabled(hasChild);ui->closeAllAction->setEnabled(hasChild);ui->titleAction->setEnabled(hasChild);ui->cascadeAction->setEnabled(hasChild);ui->nextAction->setEnabled(hasChild);ui->previousAction->setEnabled(hasChild);//文档打开且有内容选中bool hasSelect = ( activateChildWnd() && activateChildWnd()->textCursor().hasSelection() );ui->cutAction->setEnabled(hasSelect);ui->copyAction->setEnabled(hasSelect);ui->boldAction->setEnabled(hasSelect);ui->italicAction->setEnabled(hasSelect);ui->underlineAction->setEnabled(hasSelect);ui->leftAlignAction->setEnabled(hasSelect);ui->centerAction->setEnabled(hasSelect);ui->rightlignAction->setEnabled(hasSelect);ui->justifyAction->setEnabled(hasSelect);ui->colorAction->setEnabled(hasSelect);}void MainWindow::addSubWndListMenu()
{ui->menu_W->clear();ui->menu_W->addAction(ui->closeAction);ui->menu_W->addAction(ui->closeAllAction);ui->menu_W->addSeparator();ui->menu_W->addAction(ui->titleAction);ui->menu_W->addAction(ui->cascadeAction);ui->menu_W->addSeparator();ui->menu_W->addAction(ui->nextAction);ui->menu_W->addAction(ui->previousAction);QList<QMdiSubWindow*> wnds = ui->mdiArea->subWindowList();if (!wnds.isEmpty()) ui->menu_W->addSeparator();for (int i = 0; i < wnds.size(); ++i){ChildWnd *childWnd = qobject_cast<ChildWnd*>(wnds.at(i)->widget());QString menuitem_text;menuitem_text = QString("%1 %2").arg(i+1).arg(childWnd->getCurDocName());QAction *menuitem_act = ui->menu_W->addAction(menuitem_text);menuitem_act->setCheckable(true);menuitem_act->setChecked(childWnd == activateChildWnd());connect(menuitem_act, SIGNAL(triggered(bool)), m_WndMapper, SLOT(map()));m_WndMapper->setMapping(menuitem_act, wnds.at(i));}formatEnabled();
}void MainWindow::formatEnabled()
{ui->boldAction->setEnabled(true);ui->italicAction->setEnabled(true);ui->underlineAction->setEnabled(true);ui->leftAlignAction->setEnabled(true);ui->centerAction->setEnabled(true);ui->rightlignAction->setEnabled(true);ui->justifyAction->setEnabled(true);ui->colorAction->setEnabled(true);
}ChildWnd *MainWindow::activateChildWnd()
{QMdiSubWindow* actWnd = ui->mdiArea->activeSubWindow();if (actWnd)return qobject_cast<ChildWnd*>(actWnd->widget());elsereturn 0;
}QMdiSubWindow *MainWindow::findChildWnd(const QString &docName)
{QString strFile = QFileInfo(docName).canonicalFilePath();foreach(QMdiSubWindow *subWnd, ui->mdiArea->subWindowList()){ChildWnd *chilWnd = qobject_cast<ChildWnd*>(subWnd->widget());if (chilWnd->m_CurDocPath == strFile) return subWnd;}return 0;
}//QMdiSubWindow *MainWindow::findChild(const QString &docName)
//{//    QString strFile = QFileInfo(docName).canonicalFilePath();
//    foreach(QMdiSubWindow *subWnd, ui->mdiArea->subWindowList())
//    {//        ChildWnd *chilWnd = qobject_cast<ChildWnd*>(subWnd->widget());
//        if (chilWnd->m_CurDocPath == strFile) return subWnd;
//    }//    return 0;
//}void MainWindow::on_closeAction_triggered()
{ui->mdiArea->closeActiveSubWindow();
}void MainWindow::on_closeAllAction_triggered()
{ui->mdiArea->closeAllSubWindows();
}void MainWindow::on_titleAction_triggered()
{ui->mdiArea->tileSubWindows();
}void MainWindow::on_cascadeAction_triggered()
{ui->mdiArea->cascadeSubWindows();
}void MainWindow::on_nextAction_triggered()
{ui->mdiArea->activateNextSubWindow();
}void MainWindow::on_previousAction_triggered()
{ui->mdiArea->activatePreviousSubWindow();
}void MainWindow::setActiveSubWindow(QWidget *wnd)
{if (!wnd) return;ui->mdiArea->setActiveSubWindow(qobject_cast<QMdiSubWindow*>(wnd));}void MainWindow::closeEvent(QCloseEvent *event)
{ui->mdiArea->closeAllSubWindows();if (ui->mdiArea->currentSubWindow())event->ignore(); //忽略此事件elseevent->accept(); //接收此事件}void MainWindow::on_openAction_triggered()
{docOpen();
}void MainWindow::on_saveAction_triggered()
{docSave();
}void MainWindow::on_saveAsAction_triggered()
{docSaveAs();
}void MainWindow::on_undoAction_triggered()
{docUndo();
}void MainWindow::on_redoAction_triggered()
{docRedo();
}void MainWindow::on_cutAction_triggered()
{docCut();
}void MainWindow::on_copyAction_triggered()
{docCopy();
}void MainWindow::on_pasteAction_triggered()
{docPaste();
}void MainWindow::on_boldAction_triggered()
{textBold();
}void MainWindow::on_italicAction_triggered()
{textItalic();
}void MainWindow::on_underlineAction_triggered()
{textUnderline();
}

chidwnd.h

#ifndef CHILDWND_H
#define CHILDWND_H
#include <QTextEdit>class ChildWnd : public QTextEdit
{Q_OBJECT
public:ChildWnd();QString m_CurDocPath;    //当前文档路径void newDoc();           //新建文档QString getCurDocName(); //文档路径中提取文档名bool loadDoc(const QString& docName);void setCurDoc(const QString &docName);bool saveDoc();bool saveAsDoc();bool saveDocOpt(QString docName);void setFormatOnSelectedWord(const QTextCharFormat &fmt);protected:void closeEvent(QCloseEvent *event);private:bool promptSave();public slots:void docBeModified();    //文档修改时, 窗口的标题栏加 *private:bool m_bSaved;           //文档是否保存};#endif // CHILDWND_H

childwnd.cpp

#include "childwnd.h"
#include <QFileInfo>
#include <QFileDialog>
#include <QTextDocumentWriter>
#include <QMessageBox>
#include <QCloseEvent>ChildWnd::ChildWnd()
{//子窗口关闭时销毁该类的示例对象setAttribute(Qt::WA_DeleteOnClose);m_bSaved = false;
}void ChildWnd::newDoc()
{static int wndSepNum = 1;m_CurDocPath = QString("WPS 文档%1").arg(wndSepNum++);//设置窗体标题, 文档改动后名称后加 "*" 号标识setWindowTitle(m_CurDocPath + "[*]" + " - MyWPs");connect(document(), SIGNAL(contentsChanged()), this, SLOT(docBeModified()));
}QString ChildWnd::getCurDocName()
{return QFileInfo(m_CurDocPath).fileName();
}bool ChildWnd::loadDoc(const QString &docName)
{if (!docName.isEmpty()){QFile file(docName);if (!file.exists()) return false;if (!file.open(QFile::ReadOnly)) return false;QByteArray text = file.readAll();if (Qt::mightBeRichText(text))setHtml(text);elsesetPlainText(text);setCurDoc(docName);connect(document(), SIGNAL(contentsChanged()), this, SLOT(docBeModified()));return true;}
}void ChildWnd::setCurDoc(const QString &docName)
{//canonicalFilePath() 返回标准名称路径, 可以过滤"." ".."m_CurDocPath = QFileInfo(docName).canonicalFilePath();m_bSaved = true;                //文档以备保存document()->setModified(false); //文档未改动setWindowModified(false);       //窗口不显示改动标识setWindowTitle(getCurDocName() + "[*]"); //设置子窗口标题
}bool ChildWnd::saveDoc()
{if (m_bSaved) return saveDocOpt(m_CurDocPath);else saveAsDoc();
}bool ChildWnd::saveAsDoc()
{QString docName = QFileDialog::getSaveFileName(this, "另存为", m_CurDocPath, "HTML文档 (*.html *.html);;所有文件(*.*)");if (docName.isEmpty()) return false;else return saveDocOpt(docName);
}bool ChildWnd::saveDocOpt(QString docName)
{if ( !(docName.endsWith(".htm", Qt::CaseInsensitive) || docName.endsWith(".html", Qt::CaseInsensitive)) ){docName += ".html";}QTextDocumentWriter writer(docName);bool isSuccess = writer.write(this->document());if (isSuccess) setCurDoc(docName);return isSuccess;
}void ChildWnd::setFormatOnSelectedWord(const QTextCharFormat &fmt)
{QTextCursor tcursor = textCursor();if (!tcursor.hasSelection()) tcursor.select(QTextCursor::WordUnderCursor);tcursor.mergeCharFormat(fmt);mergeCurrentCharFormat(fmt);}void ChildWnd::closeEvent(QCloseEvent *event)
{if (promptSave()){event->accept();}else{event->ignore();}}bool ChildWnd::promptSave()
{if (! document()->isModified()) return true;QMessageBox::StandardButton result;result = QMessageBox::warning(this, QString("系统提示"), QString("文档%1已保存, 是否保存?").arg(getCurDocName()),QMessageBox::Yes | QMessageBox::Discard | QMessageBox::No);if (result == QMessageBox::Yes)return saveDoc();else if (result == QMessageBox::No)return false;return true;}void ChildWnd::docBeModified()
{setWindowModified(document()->isModified());
}

main.cpp

没动过

结语:

时间: 2020-08-10

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Qt - WPS文本编辑器(WPS字体格式)

WPS字体格式

mainwindow.h

mainwindow.cpp

chidwnd.h

childwnd.cpp

main.cpp

结语:

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