fix bug

sessionfriendarea.cpp

@@ -1,9 +1,8 @@
 #include "sessionfriendarea.h"
-#include <QScrollBar>
-#include <QVBoxLayout>
-#include <QPushButton>
-#include <QGridLayout>
-#include <QLabel>
+
+
+#include "debug.h"
+#include "model/data.h"
 
 SessionFriendArea::SessionFriendArea(QWidget *parent)
     : QScrollArea {parent}
@@ -20,7 +19,7 @@ SessionFriendArea::SessionFriendArea(QWidget *parent)
     container->setFixedWidth(310);
     this->setWidget(container);
 
-    //给这个widget添加布局管理器，方便后续添加元素进去
+    //给这个widget添加布局管理器方便后续添加元素进去
     QVBoxLayout* layout = new QVBoxLayout();
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
@@ -34,16 +33,78 @@ SessionFriendArea::SessionFriendArea(QWidget *parent)
     //     btn->setText(Sbtn);
     //     layout->addWidget(btn);
     // }
+
+    //构造一些临时数据作为界面调试的依据
+#if TEST_UI
+        QIcon icon(":/resource/image/defaultAv.png");
+        for(int i = 0; i < 30; i++) {
+            this->addItem(icon, "xyz" + QString::number(i), "test: last message..." + QString::number(i));
+        }
+    // LOG() << "hello world!";
+#endif
+}
+
+SessionFriendItem::SessionFriendItem(QWidget* owner, const QIcon& avatar, const QString& name, const QString& text)
+    :owner(owner)
+{
+    this->setFixedHeight(70);
+    this->setStyleSheet("QWidget { background-color: rgb(231, 231, 231); }");
+
+    //创建网格布局管理器
+    QGridLayout* layout = new QGridLayout();
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->setSpacing(0);
+    this->setLayout(layout);
+
+    //创建头像
+    QPushButton* avatarBtn = new QPushButton();
+    avatarBtn->setFixedSize(50, 50);
+    avatarBtn->setIconSize(QSize(50, 50));
+    avatarBtn->setIcon(avatar);
+    avatarBtn->setStyleSheet("QPushButton {border: none;} ");
+    avatarBtn->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+
+    //创建名字
+    QLabel* nameLabel = new QLabel();
+    nameLabel->setText(name);
+    nameLabel->setStyleSheet("QLabel { font-size: 18px; fontweight: 600; }");
+    nameLabel->setFixedHeight(35);
+    nameLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+
+    //创建消息预览的label
+    QLabel* messageLabel = new QLabel();
+    messageLabel->setText(text);
+    messageLabel->setStyleSheet("QLabel { font-size: 18px; fontweight: 600; }");
+    messageLabel->setFixedHeight(35);
+    messageLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+
+
+    layout->addWidget(avatarBtn, 0, 0, 2, 2);
+    layout->addWidget(nameLabel, 0, 2, 1, 1);
+    layout->addWidget(messageLabel, 1, 2, 1, 1);
 }
 
 void SessionFriendArea::clear()
 {
-
+    QLayout* layout = container->layout();
+    //遍历布局管理器中的所有元素,依次从布局管理器中删除
+    for(int i = layout->count() - 1; i >= 0; i--) {
+        //takeAt就能够移除对应下标的元素,但还需要释放对象
+        QLayoutItem* item = layout->takeAt(i);
+        //进行释放
+        if(item->widget()) {
+            //把这个移除内容的widget进行释放
+            delete item->widget();
+        }
+    }
 }
 
 void SessionFriendArea::addItem(const QIcon &avatar, const QString &name, const QString &text)
 {
-
+    //构造一个Item
+    SessionFriendItem* Item = new SessionFriendItem(this, avatar, name, text);
+    //将Item添加到container中
+    container->layout()->addWidget(Item);
 }