登陆界面和车牌检测

logindialog.cpp

@@ -0,0 +1,87 @@
+#include "logindialog.h"
+#include "ui_logindialog.h"
+#include "logwindow.h"
+#include <QTextStream>
+
+LoginDialog::LoginDialog(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::LoginDialog)
+{
+    ui->setupUi(this);
+    QFile f("QCore.dll");
+    if (f.open(QFile::ReadOnly| QIODevice::ReadOnly | QIODevice::Text)) {
+        QTextStream in(&f);
+        in >> id;
+        in >> psd;
+        if (id.size() != 0 && psd.size() != 0)
+            first = false;
+    }
+    hide();
+    if (first) {
+        setWindowTitle("第一次使用，请注册");
+        ui->repeat->show();
+        ui->repeat_label->show();
+    }
+    else {
+        setWindowTitle("登陆");
+        ui->repeat->hide();
+        ui->repeat_label->hide();
+    }
+    QPalette p(QPalette::WindowText,Qt::red);
+    ui->hint->setPalette(p);
+    setModal(true);
+    connect(ui->ok, &QPushButton::clicked, this, &LoginDialog::ok);
+    connect(ui->cancel, &QPushButton::clicked, this, &LoginDialog::cancel);
+}
+
+
+bool LoginDialog::getPermission()
+{
+    if (login)
+        return true;
+    return exec();
+}
+
+LoginDialog::~LoginDialog()
+{
+    delete ui;
+}
+
+void LoginDialog::ok()
+{
+    if (first) {
+        if (!(ui->id->text().size() && ui->psd->text().size() && ui->repeat->text().size()))
+            ui->hint->setText("所有选项均必填");
+        else if (ui->psd->text() == ui->repeat->text()) {
+            Log::i("注册登陆成功");
+            id = ui->id->text();
+            psd = ui->psd->text();
+            login = true;
+            accept();
+            QFile f("QCore.dll");
+            if (f.open(QFile::WriteOnly)) {
+                f.write(id.toStdString().c_str());
+                f.write("\n");
+                f.write(psd.toStdString().c_str());
+                first = false;
+            }
+        } else {
+            ui->hint->setText("两次密码不匹配");
+        }
+    } else {
+        if (!(ui->id->text().size() && ui->psd->text().size()))
+            ui->hint->setText("所有选项均必填");
+        else if (ui->id->text()!=id || ui->psd->text() != psd)
+            ui->hint->setText("用户名或密码不匹配");
+        else {
+            Log::i("登陆成功");
+            login = true;
+            accept();
+        }
+    }
+}
+
+void LoginDialog::cancel()
+{
+    reject();
+}