Qt - WPS文本编辑器(WPS文档操作)

WPS文档操作

具体代码

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();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();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::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();
}

测试结果没有问题 ok

结语:

其他代码不用动.

时间: 2020-08-09

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Qt - WPS文本编辑器(WPS文档操作)

WPS文档操作

具体代码

mainwindow.h

mainwindow.cpp

结语:

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