first save

mainwidget.cpp

@@ -0,0 +1,80 @@
+#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()
+{
+
+}