Qt多弹窗实现包括QDialog、QWidget、QMainWindow

1.相关说明

独立Widget窗口、嵌入式Widget、嵌入式MainWindow窗口、独立MainWindow窗口等弹窗的实现

2.相关界面

3.相关代码

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "tformdoc.h"
#include "tformtable.h"

#include <QPainter>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    // setCentralWidget(ui->tabWidget);
    ui->tabWidget->setVisible(false);
    ui->tabWidget->clear();
    ui->tabWidget->setTabsClosable(true);

}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::do_changeTabTitle(QString title)
{
    int index = ui->tabWidget->currentIndex();
    ui->tabWidget->setTabText(index, title);
}

void MainWindow::on_actionWidgetInsite_triggered()
{
    TFormDoc *formDoc = new TFormDoc(this);
    formDoc->setAttribute(Qt::WA_DeleteOnClose);
    int cur = ui->tabWidget->addTab(formDoc, QString::asprintf("Doc %d", ui->tabWidget->count()));
    ui->tabWidget->setCurrentIndex(cur);
    ui->tabWidget->setVisible(true);

    connect(formDoc, &TFormDoc::titleChanged, this, &MainWindow::do_changeTabTitle);
}
// tab的关闭
void MainWindow::on_tabWidget_tabCloseRequested(int index)
{
    ui->tabWidget->widget(index)->close();
}

void MainWindow::paintEvent(QPaintEvent *event)
{
    QPainter painter(this);
    painter.drawPixmap(0, ui->toolBar->height(),
                       width(), height()-ui->toolBar->height()-ui->statusbar->height(),
                       QPixmap(":/jpg/jpg/shenli.jpg"));
}

// 独立Widget窗口
void MainWindow::on_actionWidgetAlone_triggered()
{
    TFormDoc *formDoc = new TFormDoc();
    formDoc->setAttribute(Qt::WA_DeleteOnClose);
    formDoc->setWindowTitle("基于QWidget的窗口");
    formDoc->setWindowOpacity(0.8);
    formDoc->show();
}

// 嵌入式MainWindow窗口
void MainWindow::on_actionMainWindowInsite_triggered()
{
    TFormTable *formTable = new TFormTable(this);
    formTable->setAttribute(Qt::WA_DeleteOnClose);
    int cur = ui->tabWidget->addTab(formTable, QString::asprintf("Table %d", ui->tabWidget->count()));
    ui->tabWidget->setCurrentIndex(cur);
    ui->tabWidget->setVisible(true);
}
// 独立式MainWindow窗口
void MainWindow::on_actionMainWindowAlone_triggered()
{
    TFormTable *formTable = new TFormTable();
    formTable->setAttribute(Qt::WA_DeleteOnClose);
    formTable->setWindowTitle("独立的window");
    formTable->show();
}

tformdoc.cpp

#include "tformdoc.h"
#include "ui_tformdoc.h"
#include <QToolBar>
#include <QFileDialog>
#include <QFontDialog>
#include <QVBoxLayout>
TFormDoc::TFormDoc(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::TFormDoc)
{
    ui->setupUi(this);
    QToolBar *locToolBar = new QToolBar("文档", this);
    locToolBar->addAction(ui->actionOpenFile);
    locToolBar->addAction(ui->actionFont);
    locToolBar->addSeparator();
    locToolBar->addAction(ui->actionCut);
    locToolBar->addAction(ui->actionCopy);
    locToolBar->addAction(ui->actionPatse);
    locToolBar->addAction(ui->actionRedo);
    locToolBar->addAction(ui->actionUndo);
    locToolBar->addSeparator();
    locToolBar->addAction(ui->actionClose);
    locToolBar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
    QVBoxLayout *layout = new QVBoxLayout(this);
    layout->addWidget(locToolBar);
    layout->addWidget(ui->plainTextEdit);
    this->setLayout(layout);
}

TFormDoc::~TFormDoc()
{
    delete ui;
}

void TFormDoc::on_actionOpenFile_triggered()
{
    QString curPath = QCoreApplication::applicationDirPath();
    QString aFileName = QFileDialog::getOpenFileName(this, "打开一个文件", curPath, "(*.h *.cpp);;(*.txt);;(*.*)");
    if(aFileName.isEmpty()){
        return;
    }
    QFile aFile(aFileName);
    if(aFile.open(QIODevice::ReadOnly | QIODevice::Text)){
        ui->plainTextEdit->clear();
        QTextStream aStream(&aFile);
        while(!aStream.atEnd()){
            QString str = aStream.readLine();
            ui->plainTextEdit->appendPlainText(str);
        }
        aFile.close();
        QFileInfo fileInfo(aFileName);
        QString shortName = fileInfo.fileName();
        setWindowTitle(shortName);
        emit titleChanged(shortName);
    }

}

void TFormDoc::on_actionFont_triggered()
{
    QFont font = ui->plainTextEdit->font();
    bool ok;
    font = QFontDialog::getFont(&ok, font);
    if(ok){
        ui->plainTextEdit->setFont(font);
    }
}


void TFormDoc::on_actionClose_triggered()
{
    this->close();
}

tformtable.cpp

#include "tformtable.h"
#include "ui_TFormTable.h"
#include <QStandardItemModel>
#include <QItemSelectionModel>
#include <QMessageBox>
#include <QLabel>
#include "tdialogsize.h"
#include "tdialogheaders.h"
#include "tdialoglocate.h"

TFormTable::TFormTable(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::TFormTable)
{
    ui->setupUi(this);
    dlgHeaders = NULL; // 初始化
    m_model = new QStandardItemModel(4, 4, this);
    QStringList header;
    header << "姓名" << "性别" << "学位" << "部门";
    m_model->setHorizontalHeaderLabels(header);
    m_selection = new QItemSelectionModel(m_model);
    ui->tableView->setModel(m_model);
    ui->tableView->setSelectionModel(m_selection);

    setCentralWidget(ui->tableView);
    labCellPos = new QLabel("当前单元：", this);
    labCellPos->setMinimumWidth(200);
    labCellText = new QLabel("单元格内容：", this);
    labCellText->setMinimumWidth(200);
    ui->statusbar->addWidget(labCellPos);
    ui->statusbar->addWidget(labCellText);
    connect(m_selection, &QItemSelectionModel::currentChanged, this, &TFormTable::do_model_currentChanged);
}

TFormTable::~TFormTable()
{
    delete ui;

}

// void TFormTable::on_actionSetRowCol_triggered()
// {
//     TDialogSize *dlgTableSize = new TDialogSize();
//     dlgTableSize->setWindowFlag(Qt::MSWindowsFixedSizeDialogHint);
//     dlgTableSize->setRowColumn(m_model->rowCount(), m_model->columnCount());
//     int ret = dlgTableSize->exec();
//     if(ret == QDialog::Accepted){
//         m_model->setColumnCount(dlgTableSize->columnCount());
//         m_model->setRowCount(dlgTableSize->rowCount());
//     }
//     delete dlgTableSize;
// }

void TFormTable::on_actionSetRowCol_triggered()
{
    TDialogSize dlgTableSize;
    dlgTableSize.setWindowFlag(Qt::MSWindowsFixedSizeDialogHint);
    dlgTableSize.setRowColumn(m_model->rowCount(), m_model->columnCount());
    int ret = dlgTableSize.exec();
    if(ret == QDialog::Accepted){
        m_model->setColumnCount(dlgTableSize.columnCount());
        m_model->setRowCount(dlgTableSize.rowCount());
    }
    // delete dlgTableSize;
}

void TFormTable::on_actionSetHeader_triggered()
{
    if(dlgHeaders == NULL){
        dlgHeaders = new TDialogHeaders(this);
    }
    QStringList strList;
    for(int i = 0; i < m_model->columnCount(); i++){
        strList.append(m_model->headerData(i, Qt::Horizontal, Qt::DisplayRole).toString());
    }
    dlgHeaders->setHeaderList(strList);
    int ret = dlgHeaders->exec();
    if(ret == QDialog::Accepted){
        m_model->setHorizontalHeaderLabels(dlgHeaders->headerList());
    }
}

void TFormTable::do_setCellText(int row, int column, QString text)
{
    QModelIndex index = m_model->index(row, column);
    m_selection->clearSelection();
    m_selection->setCurrentIndex(index, QItemSelectionModel::Select);
    m_model->setData(index, text, Qt::DisplayRole);
}


void TFormTable::on_actionLocateUnit_triggered()
{
    TDialogLocate *dlgLocate = new TDialogLocate(this);
    dlgLocate->setAttribute(Qt::WA_DeleteOnClose);
    dlgLocate->setWindowFlag(Qt::WindowStaysOnTopHint);
    // 初始化对话框
    dlgLocate->setSpinRange(m_model->rowCount(), m_model->columnCount());
    QModelIndex curIndex = m_selection->currentIndex();
    if(curIndex.isValid()){
        dlgLocate->setSpinValue(curIndex.row(), curIndex.column());
    }
    dlgLocate->show();
    dlgLocate->setModal(false);
    connect(dlgLocate, &TDialogLocate::changeCellText, this, &TFormTable::do_setCellText);
    connect(dlgLocate, &TDialogLocate::changeActionEnable, ui->actionLocateUnit, &QAction::setEnabled);
    connect(this, &TFormTable::cellIndexChanged, dlgLocate, &TDialogLocate::setSpinValue);

}


void TFormTable::on_tableView_clicked(const QModelIndex &index)
{
    emit cellIndexChanged(index.row(), index.column());
}

void TFormTable::do_model_currentChanged(const QModelIndex &current, const QModelIndex &previous)
{
    Q_UNUSED(previous);
    if(current.isValid()){
        labCellPos->setText(QString::asprintf("当前单元格：%d行，%d列",current.row(), current.column()));
        QStandardItem *aItem = m_model->itemFromIndex(current);
        labCellText->setText("单元格内容：" + aItem->text());
    }
}

tdialogheaders.cpp

#include "tdialogheaders.h"
#include "ui_tdialogheaders.h"
#include <QStringListModel>

TDialogHeaders::TDialogHeaders(QWidget *parent)
    : QDialog(parent)
    , ui(new Ui::TDialogHeaders)
{
    ui->setupUi(this);
    m_model = new QStringListModel(this);
    ui->listView->setModel(m_model);
}

TDialogHeaders::~TDialogHeaders()
{
    delete ui;
}

void TDialogHeaders::setHeaderList(QStringList &headers)
{
    m_model->setStringList(headers);
}

QStringList TDialogHeaders::headerList()
{
    return m_model->stringList();
}

tdialoglocate.cpp

#include "tdialoglocate.h"
#include "ui_tdialoglocate.h"
#include <QCloseEvent>
#include <QShowEvent>

TDialogLocate::TDialogLocate(QWidget *parent)
    : QDialog(parent)
    , ui(new Ui::TDialogLocate)
{
    ui->setupUi(this);
}

TDialogLocate::~TDialogLocate()
{
    delete ui;
}

void TDialogLocate::setSpinRange(int rowCount, int colCount)
{
    ui->spinBoxRow->setMaximum(rowCount-1);
    ui->spinBoxCol->setMaximum(colCount-1);
}

void TDialogLocate::setSpinValue(int rowNo, int colNo)
{
    ui->spinBoxRow->setValue(rowNo);
    ui->spinBoxCol->setValue(colNo);
}

// 设定文字
void TDialogLocate::on_btnSetText_clicked()
{
    QString text = ui->lineEdit->text();
    int row = ui->spinBoxRow->value();
    int col = ui->spinBoxCol->value();
    if(ui->chkIncRow->isChecked()){
        ui->spinBoxRow->setValue(ui->spinBoxRow->value()+1);
    }
    if(ui->chkIncCol->isChecked()){
        ui->spinBoxCol->setValue(ui->spinBoxCol->value()+1);
    }
    emit changeCellText(row, col, text);
}

void TDialogLocate::closeEvent(QCloseEvent *event)
{
    event->accept();
    emit changeActionEnable(true);
}

void TDialogLocate::showEvent(QShowEvent *event)
{
    event->accept();
    emit changeActionEnable(false);
}

tdialogsize.cpp

#include "tdialogsize.h"
#include "ui_tdialogsize.h"
#include <QMessageBox>

TDialogSize::TDialogSize(QWidget *parent)
    : QDialog(parent)
    , ui(new Ui::TDialogSize)
{
    ui->setupUi(this);
}

TDialogSize::~TDialogSize()
{
    delete ui;
    QMessageBox::information(this, "提示", "TDialogSize释放资源");
}

void TDialogSize::setRowColumn(int row, int column)
{
    ui->spinBoxRow->setValue(row);
    ui->spinBoxCol->setValue(column);
}

int TDialogSize::rowCount()
{
    return ui->spinBoxRow->value();
}

int TDialogSize::columnCount()
{
    return ui->spinBoxCol->value();
}