qt_demoe/styledemo/frmmain.cpp

#pragma execution_character_set("utf-8")
#include "frmmain.h"
#include "ui_frmmain.h"
#include "qfile.h"
#include "qtextstream.h"
#include "qtranslator.h"
#include "qdesktopwidget.h"
#include "qmessagebox.h"
#include "qdebug.h"

frmMain::frmMain(QWidget *parent) : QMainWindow(parent), ui(new Ui::frmMain)
{
    ui->setupUi(this);
    this->initForm();
}

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

void frmMain::showEvent(QShowEvent *)
{
    int width = ui->tabConfig->width() / ui->tabConfig->count() - 20;
    ui->tabConfig->setStyleSheet(QString("QTabBar::tab{min-width:%1px;}").arg(width));
}

void frmMain::initForm()
{
    this->initTableWidget();
    this->initTreeWidget();
    this->initListWidget();
    this->initOther();
    this->initStyle();
    this->initTranslator();
    ui->tabWidget->setCurrentIndex(0);
}

void frmMain::initTableWidget()
{
    //设置列数和列宽
    int width = qApp->desktop()->availableGeometry().width() - 120;
    ui->tableWidget->setColumnCount(5);
    ui->tableWidget->setColumnWidth(0, width * 0.06);
    ui->tableWidget->setColumnWidth(1, width * 0.10);
    ui->tableWidget->setColumnWidth(2, width * 0.06);
    ui->tableWidget->setColumnWidth(3, width * 0.10);
    ui->tableWidget->setColumnWidth(4, width * 0.15);
    ui->tableWidget->verticalHeader()->setDefaultSectionSize(25);

    QStringList headText;
    headText << "设备编号" << "设备名称" << "设备地址" << "告警内容" << "告警时间";
    ui->tableWidget->setHorizontalHeaderLabels(headText);
    ui->tableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);
    ui->tableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);
    ui->tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);
    ui->tableWidget->setAlternatingRowColors(true);
    ui->tableWidget->verticalHeader()->setVisible(false);
    ui->tableWidget->horizontalHeader()->setStretchLastSection(true);

    //设置行高
    ui->tableWidget->setRowCount(300);

    for (int i = 0; i < 300; i++) {
        ui->tableWidget->setRowHeight(i, 24);

        QTableWidgetItem *itemDeviceID = new QTableWidgetItem(QString::number(i + 1));
        QTableWidgetItem *itemDeviceName = new QTableWidgetItem(QString("测试设备%1").arg(i + 1));
        QTableWidgetItem *itemDeviceAddr = new QTableWidgetItem(QString::number(i + 1));
        QTableWidgetItem *itemContent = new QTableWidgetItem("防区告警");
        QTableWidgetItem *itemTime = new QTableWidgetItem(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"));

        ui->tableWidget->setItem(i, 0, itemDeviceID);
        ui->tableWidget->setItem(i, 1, itemDeviceName);
        ui->tableWidget->setItem(i, 2, itemDeviceAddr);
        ui->tableWidget->setItem(i, 3, itemContent);
        ui->tableWidget->setItem(i, 4, itemTime);
    }
}

void frmMain::initTreeWidget()
{
    ui->treeWidget->clear();
    ui->treeWidget->setHeaderLabel(" 树状列表控件");

    QTreeWidgetItem *group1 = new QTreeWidgetItem(ui->treeWidget);
    group1->setText(0, "父元素1");
    group1->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
    group1->setCheckState(0, Qt::PartiallyChecked);

    QTreeWidgetItem *subItem11 = new QTreeWidgetItem(group1);
    subItem11->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
    subItem11->setText(0, "子元素1");
    subItem11->setCheckState(0, Qt::Checked);

    QTreeWidgetItem *subItem12 = new QTreeWidgetItem(group1);
    subItem12->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
    subItem12->setText(0, "子元素2");
    subItem12->setCheckState(0, Qt::Unchecked);

    QTreeWidgetItem *subItem13 = new QTreeWidgetItem(group1);
    subItem13->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
    subItem13->setText(0, "子元素3");
    subItem13->setCheckState(0, Qt::Unchecked);

    QTreeWidgetItem *group2 = new QTreeWidgetItem(ui->treeWidget);
    group2->setText(0, "父元素2");
    group2->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
    group2->setCheckState(0, Qt::Unchecked);

    QTreeWidgetItem *subItem21 = new QTreeWidgetItem(group2);
    subItem21->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
    subItem21->setText(0, "子元素1");
    subItem21->setCheckState(0, Qt::Unchecked);

    QTreeWidgetItem *subItem211 = new QTreeWidgetItem(subItem21);
    subItem211->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled | Qt::ItemIsSelectable);
    subItem211->setText(0, "子子元素1");
    subItem211->setCheckState(0, Qt::Unchecked);

    ui->treeWidget->expandAll();
}

void frmMain::initListWidget()
{
    QStringList items;
    for (int i = 1; i <= 30; i++) {
        items << QString("元素%1").arg(i);
    }

    ui->listWidget->addItems(items);
    ui->cbox1->addItems(items);
    ui->cbox2->addItems(items);
}

void frmMain::initOther()
{
    ui->rbtn1->setChecked(true);
    ui->ck2->setChecked(true);
    ui->ck3->setCheckState(Qt::PartiallyChecked);
    ui->horizontalSlider->setValue(88);

    ui->tab9->setStyleSheet("QPushButton{font:20pt;}");
    ui->widgetVideo->setStyleSheet("QLabel{font:20pt;}");

    ui->widgetLeft->setProperty("nav", "left");
    ui->widgetBottom->setProperty("form", "bottom");
    ui->widgetTop->setProperty("nav", "top");
    ui->widgetVideo->setProperty("video", true);

    QList<QLabel *> labChs = ui->widgetVideo->findChildren<QLabel *>();
    foreach (QLabel *lab, labChs) {
        lab->setFocusPolicy(Qt::StrongFocus);
    }
}

void frmMain::initStyle()
{
    //加载样式表
    QString qss;
    QFile file(":/qss/psblack.css");
    //QFile file(":/qss/flatwhite.css");
    //QFile file(":/qss/lightblue.css");
    if (file.open(QFile::ReadOnly)) {
#if 1
        //用QTextStream读取样式文件不用区分文件编码 带bom也行
        QStringList list;
        QTextStream in(&file);
        //in.setCodec("utf-8");
        while (!in.atEnd()) {
            QString line;
            in >> line;
            list << line;
        }

        qss = list.join("\n");
#else
        //用readAll读取默认支持的是ANSI格式,如果不小心用creator打开编辑过了很可能打不开
        qss = QLatin1String(file.readAll());
#endif
        QString paletteColor = qss.mid(20, 7);
        qApp->setPalette(QPalette(QColor(paletteColor)));
        qApp->setStyleSheet(qss);
        file.close();
    }
}

void frmMain::initTranslator()
{
    //加载鼠标右键菜单翻译文件
    QTranslator *translator1 = new QTranslator(qApp);
    translator1->load(":/image/qt_zh_CN.qm");
    qApp->installTranslator(translator1);

    //加载富文本框鼠标右键菜单翻译文件
    QTranslator *translator2 = new QTranslator(qApp);
    translator2->load(":/image/widgets.qm");
    qApp->installTranslator(translator2);
}

void frmMain::on_btnInfo_clicked()
{
    QMessageBox::information(this, "提示", "这里是提示信息!");
}