C++ Gui Qt4 1～3章代码整理

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QtWidgets/QLabel> #include "finddialog.h" #include "gotocelldialog.h" #include "sortdialog.h" #include "spreadsheet.h" #include <QMessageBox> #include <QFileDialog> #include <QCloseEvent> #include "ui_gotocelldialog.h" #include "ui_sortdialog.h" #include <QSettings> #include <QBitArray> //functions void MainWindow::createActions() { for(int i=0; i<MaxRecentFiles; ++i) { recentFileActions[i] = new QAction(this); recentFileActions[i]->setVisible(false); connect(recentFileActions[i], SIGNAL(triggered()), this, SLOT(openRecentFile())); } connect(ui->action_New, SIGNAL(triggered()), this, SLOT(newFile())); connect(ui->action_Exit, SIGNAL(triggered()), this, SLOT(close())); connect(ui->action_Open, SIGNAL(triggered()), this, SLOT(open())); connect(ui->action_Save, SIGNAL(triggered()), this, SLOT(save())); connect(ui->actionSave_As, SIGNAL(triggered()), this, SLOT(saveAs())); connect(ui->action_All, SIGNAL(triggered()), this, SLOT(selectAll())); connect(ui->actionShow_Grid, SIGNAL(triggered(bool)), this, SLOT(setShowGrid())); connect(ui->action_AboutQt, SIGNAL(triggered()), this, SLOT(aboutQt())); connect(ui->action_About, SIGNAL(triggered()), this, SLOT(about())); connect(ui->action_Find, SIGNAL(triggered()), this, SLOT(find())); connect(ui->action_Go_To_Cell, SIGNAL(triggered()), this, SLOT(goToCell())); connect(ui->action_Sort, SIGNAL(triggered()), this, SLOT(sort())); connect(ui->action_Exit, SIGNAL(triggered()), qApp, SLOT(closeAllWindows())); } void MainWindow::createMenus() { cutAction = new QAction(tr("Cu&t"), this); copyAction = new QAction(tr("&Copy"), this); pasteAction = new QAction(tr("&Paste"), this); // for(int i=0; i<MaxRecentFiles; ++i) { ui->menu_File->addAction(recentFileActions[i]->text()); } } void MainWindow::createContextMenu() { spreadSheet->addAction(cutAction); spreadSheet->addAction(copyAction); spreadSheet->addAction(pasteAction); spreadSheet->setContextMenuPolicy(Qt::ActionsContextMenu); } void MainWindow::createToolBars() { ui->fileToolBar->addAction(ui->action_New); ui->fileToolBar->addAction(ui->action_Open); ui->fileToolBar->addAction(ui->action_Save); ui->editToolBar->addAction(ui->action_Cut); ui->editToolBar->addAction(ui->action_Copy); ui->editToolBar->addAction(ui->action_Paste); ui->editToolBar->addSeparator(); ui->editToolBar->addAction(ui->action_Find); ui->editToolBar->addAction(ui->action_Go_To_Cell); ui->editToolBar->addAction(ui->action_AboutQt); addToolBar(ui->fileToolBar); addToolBar(ui->editToolBar); } void MainWindow::createStatusBar() { locationLabel = new QLabel("W999"); locationLabel->setAlignment(Qt::AlignHCenter); locationLabel->setMinimumSize(locationLabel->sizeHint()); formulaLabel = new QLabel; formulaLabel->setIndent(3); ui->mainStatusBar->addWidget(locationLabel); ui->mainStatusBar->addWidget(formulaLabel); connect(spreadSheet, SIGNAL(currentCellChanged(int,int,int,int)), this, SLOT(updateStatusBar())); connect(spreadSheet, SIGNAL(modified()), this, SLOT(spreadsheetModified())); updateStatusBar(); } void MainWindow::readSettings() { QSettings settings("Software Inc.", "SpreadSheet"); restoreGeometry(settings.value("geometry").toByteArray()); recentFiles = settings.value("recentfiles").toStringList(); updateRecentFileActions(); bool showgrid = settings.value("showgrid", true).toBool(); ui->actionShow_Grid->setChecked(showgrid); bool autorecalc = settings.value("autorecalc", true).toBool(); ui->actionAuto_Recalculate->setChecked(autorecalc); } void MainWindow::writeSettings() { QSettings settings("Software Inc.", "SpreadSheet"); settings.setValue("geometry", saveGeometry()); settings.setValue("recentfiles", recentFiles); settings.setValue("showgrid", ui->actionShow_Grid->isChecked()); settings.setValue("autorecalc", ui->actionAuto_Recalculate->isChecked()); } void MainWindow::setCurrentFile(const QString &fileName) { curFile = fileName; setWindowModified(false); QString shownName = tr("Untitled"); if(!curFile.isEmpty()) { shownName = strippedName(curFile); recentFiles.removeAll(curFile); recentFiles.prepend(curFile); updateRecentFileActions(); } setWindowTitle(tr("%1[*] - %2").arg(shownName).arg(tr("spread sheet"))); } QString MainWindow::strippedName(const QString &fullFileName) { return QFileInfo(fullFileName).fileName(); } void MainWindow::updateRecentFileActions() { QMutableStringListIterator i(recentFiles); while (i.hasNext()) { if(!QFile::exists(i.next())) i.remove(); } for(int j=0; j<MaxRecentFiles; ++j) { if(j < recentFiles.count()) { QString text = tr("&%1 %2").arg(j+1).arg(strippedName(recentFiles[j])); recentFileActions[j]->setText(text); recentFileActions[j]->setData(recentFiles[j]); recentFileActions[j]->setVisible(true); } else { recentFileActions[j]->setVisible(false); } } spreadSheet->setVisible(!recentFiles.isEmpty()); } //slots void MainWindow::newFile() { if(okToContinue()) { //spreadSheet->clear(); //setCurrentFile(tr("")); MainWindow *w = new MainWindow; w->show(); } } bool MainWindow::okToContinue() { if(isWindowModified()) { int r = QMessageBox::warning(this, tr("SpreadSheet"),\ tr("the doc has been modfied.\ndo you want to save your changes?"),\ QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel); if(r == QMessageBox::Yes) { return save(); } else if(r == QMessageBox::Cancel) { return false; } } return true; } void MainWindow::open() { if(okToContinue()) { QString fileName = QFileDialog::getOpenFileName(this, tr("open spread sheet"),\ ".", tr("spread sheet file (*.sp)")); if(!fileName.isEmpty()) { loadFile(fileName); } } } bool MainWindow::loadFile(const QString &fileName) { if(!spreadSheet->readFile(fileName)) { ui->mainStatusBar->showMessage(tr("loading canceled"), 2000); return false; } setCurrentFile(fileName); ui->mainStatusBar->showMessage(tr("file loaded"), 2000); return true; } bool MainWindow::save() { if(curFile.isEmpty()) { return saveAs(); } else { return saveFile(curFile); } } bool MainWindow::saveFile(const QString &fileName) { if(!spreadSheet->writeFile(fileName)) { ui->mainStatusBar->showMessage(tr("saving canceled"), 2000); return false; } setCurrentFile(fileName); ui->mainStatusBar->showMessage(tr("file saved"), 2000); return true; } bool MainWindow::saveAs() { QString fileName = QFileDialog::getSaveFileName(this, tr("save spread sheet"),\ ".", tr("spread sheet file (*.sp)")); if(fileName.isEmpty()) { return false; } return saveFile(fileName); } void MainWindow::selectAll() { } void MainWindow::setShowGrid() { } void MainWindow::aboutQt() { QMessageBox::aboutQt(this, tr("Qt 5.0.1")); } void MainWindow::find() { if(!findDialog) { findDialog = new FindDialog(this);