Merkletree builds QT implementation UI

MerkleTree structure QT Realization UI

Blockchain learning notes （ 3、 ... and ）

Use qt Realization Merkle Tree Construction and existence verification

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Preface

After the first two chapters blog Code writing , The interaction of the console and the corresponding backend are preliminarily realized , This article blog On the basis of the previous two articles, the front end is realized .
The first two blog:
Merkle Tree The existential function is modified for the first time
Merkle Tree structure （C++ Realization ）

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One 、 There are... On the tree

Two 、 The tree does not exist

3、 ... and 、 Part of the code

mainwindow.cpp

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

#include <iostream>
#include <time.h>
#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; // The leaf node is string class 
        vector<long> v2;
        long long k=20;
        if(!ui->LeafCount->text().isEmpty()){
    
            k=ui->LeafCount->text().toInt();
        }
        // Generate random k A digital 
        srand(time(NULL));
        for (int i = 0; i <k; i++) {
    

            long t = rand() % 100001;// The generated number is 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(); // Enter the leaf node you want to verify 
    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))// Verify whether this node exists 
    {
    
        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> Please enter a build Merkle Tree Number of random numbers ( Default 20 A digital ):</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> structure 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> The corresponding random number and hash value generated ：</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> random number </string>
     </property>
     <property name="textAlignment">
      <set>AlignCenter</set>
     </property>
    </column>
    <column>
     <property name="text">
      <string>HASH value </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 value </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 value </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> structure Merkle Tree All produced in the process 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> Used in the validation process 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> verification </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> Validation data ：</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 value </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> Data validation HASH value ：</string>
    </property>
   </widget>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <resources/>
 <connections/>
</ui>

Four 、 Related code resources

Merkle Tree QT Realization UI

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At the end

The above is the Merkle Tree Of qt Realization , For reference only . If there are relevant professional questions , Please leave a message in the comment area .