MyChat_Client/mainwidget.cpp

#include "mainwidget.h"
#include "./ui_mainwidget.h"
#include <QHBoxLayout>

MainWidget *MainWidget::instance = nullptr;

MainWidget *MainWidget::getInstance()
{
    if(instance == nullptr) {
        //此处不传入参数，以桌面为父窗口
        //
        instance = new MainWidget();
    }
    return instance;
}

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

    this->setWindowTitle("MyChat");
    this->setWindowIcon(QIcon(":/resource/image/logo.png"));

    //初始化主窗口的样式布局
    initMainWindow();
    //初始化左侧窗口的样式布局
    initLeftWindow();
    //初始化中间窗口的样式布局
    initMidWindow();
    //初始化右侧窗口的样式布局
    initRightWindow();
}

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

void MainWidget::initMainWindow()
{
    QHBoxLayout* layout = new QHBoxLayout();
    //layout内部的元素间隔设置为0
    layout->setSpacing(0);
    //layout内部元素四个方向边界的距离设置
    layout->setContentsMargins(0, 0, 0, 0);
    this->setLayout(layout);

    windowLeft = new QWidget();
    windowMid = new QWidget();
    windowRight = new QWidget();

    windowLeft->setFixedWidth(70);
    windowMid->setFixedWidth(310);
    windowRight->setMinimumWidth(900);

    windowLeft->setStyleSheet("QWidget { background-color: rgb(46, 46, 46); }");
    windowMid->setStyleSheet("QWidget { background-color: rgb(247, 247, 247); }");
    windowRight->setStyleSheet("QWidget { background-color: rgb(225, 225, 225); }");

    layout->addWidget(windowLeft);
    layout->addWidget(windowMid);
    layout->addWidget(windowRight);
}

void MainWidget::initLeftWindow()
{

}

void MainWidget::initMidWindow()
{

}

void MainWidget::initRightWindow()
{

}