MerkleTree 构建QT实现UI

MerkleTree 构建QT实现UI

区块链学习笔记（三）

使用qt实现Merkle Tree构造以及存在性验证

目录

• MerkleTree 构建QT实现UI
• 前言
• 一、树上存在
• 二、树上不存在
• 三、部分代码
• • mainwindow.cpp
  • mainwindow.ui
• 四、相关代码资源
• 写在最后

---

前言

经过前面两篇blog的代码编写，初步实现了控制台的交互以及相应的后端，本篇blog在前两篇的基础上实现了前段。
前面两篇blog:
Merkle Tree 存在性功能第一次修改
Merkle Tree 构建（C++实现）

---

一、树上存在

二、树上不存在

三、部分代码 mainwindow.cpp

#include "mainwindow.h"
#include "truenode.h"
#include "falsenode.h"
#include "outbide.h"
#include "ui_mainwindow.h"

#include  
#include  
#include  "tree.h"
#include  "sha256.h"
using namespace std;

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

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

tree ntree;
void MainWindow::on_MerkleTreeButton_clicked()
{
        ui->Num->clear();
        ui->AllHASH->clear();
        vector<string> v; //叶子节点为string类
        vector<long> v2;
        long long k=20;
        if(!ui->LeafCount->text().isEmpty()){
            k=ui->LeafCount->text().toInt();
        }
        //生成随机的k个数字
        srand(time(NULL));
        for (int i = 0; i <k; i++) {

            long t = rand() % 100001;//生成的数字在0-100000
            v2.push_back(t);
        }
        string temp="",temp1="";
        for (int i = 0; i < v2.size(); i++) {
            v.push_back(to_string(v2[i]));
            temp=to_string(v2[i]);
            temp1=sha256::hash256_hex_string(temp);
            QTreeWidgetItem * liItem = new QTreeWidgetItem(QStringList()<<QString::fromStdString(temp)<<QString::fromStdString(temp1));
            ui->Num->addTopLevelItem(liItem);
        }

        ntree.buildBaseLeafes(v);
        ntree.buildTree();
        for(int j=0;j<ntree.base.size();j++){
        for (int i = 0; i < ntree.base[j].size(); i++) {
            QTreeWidgetItem * liItem = new QTreeWidgetItem(QStringList()<<QString::fromStdString(ntree.base[j][i]->getHash()));
            ui->AllHASH->addTopLevelItem(liItem);
        }
        }

}

void MainWindow::on_pushButton_clicked()
{
    ui->VHASH->clear();
    ui->UseHASH->clear();
    ntree.base2.clear();
    string check_str = "";
    check_str=ui->VNum->text().toStdString(); //输入想验证的叶子节点
    check_str = sha256::hash256_hex_string(check_str);
    QTreeWidgetItem * liItem = new QTreeWidgetItem(QStringList()<<QString::fromStdString(check_str));
    ui->VHASH->addTopLevelItem(liItem);
    if (ntree.verify(check_str))//验证有无这个节点
    {
        for(int i=0;i<ntree.base2.size();i++){
            QTreeWidgetItem * liItem = new QTreeWidgetItem(QStringList()<<QString::fromStdString(ntree.base2[i]));
            ui->UseHASH->addTopLevelItem(liItem);
        }
        truenode *configWindow = new truenode;
        configWindow->show();
    }
    else
    {
        if(ntree.base2.empty()){
            Outbide *configWindow = new Outbide;
            configWindow->show();
        }
        else{
        for(int i=0;i<ntree.base2.size();i++){
            QTreeWidgetItem * liItem = new QTreeWidgetItem(QStringList()<<QString::fromStdString(ntree.base2[i]));
            ui->UseHASH->addTopLevelItem(liItem);
        }
        falsenode *configWindow = new falsenode;
        configWindow->show();
        }

    }

}

mainwindow.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>1468</width>
    <height>763</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Merkle Tree UI</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <widget class="QLabel" name="label">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>20</y>
      <width>401</width>
      <height>16</height>
     </rect>
    </property>
    <property name="text">
     <string>请输入构建Merkle Tree随机数的个数(默认20个数字):</string>
    </property>
   </widget>
   <widget class="QLineEdit" name="LeafCount">
    <property name="geometry">
     <rect>
      <x>400</x>
      <y>10</y>
      <width>91</width>
      <height>51</height>
     </rect>
    </property>
   </widget>
   <widget class="QPushButton" name="MerkleTreeButton">
    <property name="geometry">
     <rect>
      <x>210</x>
      <y>590</y>
      <width>201</width>
      <height>91</height>
     </rect>
    </property>
    <property name="text">
     <string>构建Merkle Tree</string>
    </property>
   </widget>
   <widget class="QLabel" name="label_2">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>100</y>
      <width>231</width>
      <height>16</height>
     </rect>
    </property>
    <property name="text">
     <string>生成的相应的随机数及哈希值：</string>
    </property>
   </widget>
   <widget class="QTreeWidget" name="Num">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>130</y>
      <width>731</width>
      <height>141</height>
     </rect>
    </property>
    <column>
     <property name="text">
      <string>随机数</string>
     </property>
     <property name="textAlignment">
      <set>AlignCenter</set>
     </property>
    </column>
    <column>
     <property name="text">
      <string>HASH值</string>
     </property>
     <property name="textAlignment">
      <set>AlignCenter</set>
     </property>
    </column>
   </widget>
   <widget class="QTreeWidget" name="AllHASH">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>340</y>
      <width>731</width>
      <height>231</height>
     </rect>
    </property>
    <column>
     <property name="text">
      <string>HASH值</string>
     </property>
     <property name="textAlignment">
      <set>AlignCenter</set>
     </property>
    </column>
   </widget>
   <widget class="QTreeWidget" name="UseHASH">
    <property name="geometry">
     <rect>
      <x>770</x>
      <y>320</y>
      <width>681</width>
      <height>171</height>
     </rect>
    </property>
    <column>
     <property name="text">
      <string>HASH值</string>
     </property>
     <property name="textAlignment">
      <set>AlignCenter</set>
     </property>
    </column>
   </widget>
   <widget class="QLabel" name="label_3">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>300</y>
      <width>351</width>
      <height>20</height>
     </rect>
    </property>
    <property name="text">
     <string>构造Merkle Tree的过程中产生的所有HASH：</string>
    </property>
   </widget>
   <widget class="QLabel" name="label_4">
    <property name="geometry">
     <rect>
      <x>760</x>
      <y>270</y>
      <width>171</width>
      <height>31</height>
     </rect>
    </property>
    <property name="text">
     <string>验证过程使用到的HASH:</string>
    </property>
   </widget>
   <widget class="QPushButton" name="pushButton">
    <property name="geometry">
     <rect>
      <x>990</x>
      <y>520</y>
      <width>241</width>
      <height>91</height>
     </rect>
    </property>
    <property name="text">
     <string>验证</string>
    </property>
   </widget>
   <widget class="QLineEdit" name="VNum">
    <property name="geometry">
     <rect>
      <x>880</x>
      <y>30</y>
      <width>121</width>
      <height>61</height>
     </rect>
    </property>
   </widget>
   <widget class="QLabel" name="label_5">
    <property name="geometry">
     <rect>
      <x>770</x>
      <y>50</y>
      <width>111</width>
      <height>16</height>
     </rect>
    </property>
    <property name="text">
     <string>验证的数据：</string>
    </property>
   </widget>
   <widget class="QTreeWidget" name="VHASH">
    <property name="geometry">
     <rect>
      <x>770</x>
      <y>160</y>
      <width>671</width>
      <height>71</height>
     </rect>
    </property>
    <column>
     <property name="text">
      <string>HASH值</string>
     </property>
     <property name="textAlignment">
      <set>AlignCenter</set>
     </property>
    </column>
   </widget>
   <widget class="QLabel" name="label_6">
    <property name="geometry">
     <rect>
      <x>770</x>
      <y>120</y>
      <width>161</width>
      <height>16</height>
     </rect>
    </property>
    <property name="text">
     <string>验证数据的HASH值：</string>
    </property>
   </widget>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <resources/>
 <connections/>
</ui>

四、相关代码资源

Merkle Tree QT 实现UI

---

写在最后

以上即为Merkle Tree 的qt实现，仅供参考。如有相关专业问题，请在评论区留言。