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 | #include "textfinder.h"
#include "ui_textfinder.h"
#include <QFile>
#include <QTextStream>
#include <QFileDialog>
#include <QDragEnterEvent>
#include <QDropEvent>
#include <QMimeData>
#include <QTextEdit>
#include <QTextCharFormat>
#include <QTextCursor>
#include <QMessageBox>
#include <QKeyEvent>
 
textfinder::textfinder(QWidget *parent) : QWidget(parent), ui(new Ui::textfinder)
{
    ui->setupUi(this);
    loadtextfile();
    setAcceptDrops(true);
    ui->textEdit->setAcceptDrops(false);
    ui->textEdit->setReadOnly(true);
}
 
textfinder::~textfinder()
{
    delete ui;
}
 
void textfinder::on_findButton_clicked()
{
    //QLabel compteur = ui->compteur->int();
    QString searchString = ui->lineEdit->text();
    QTextDocument *document = ui->textEdit->document();
    bool found = false;
 
    if (isFirstTime == false)
        document->undo();
 
    if (searchString.isEmpty())
        QMessageBox::information(this, tr("Recherche Vide"), "Veuillez taper un mot à rechercher.");
    else
    {
        QTextCursor highlightCursor(document);
        QTextCursor cursor(document);
 
        cursor.beginEditBlock();
 
        QTextCharFormat plainFormat(highlightCursor.charFormat());
        QTextCharFormat underlineFormat = plainFormat;
        underlineFormat.setBackground(Qt::yellow);
        while (!highlightCursor.isNull() && !highlightCursor.atEnd())
        {
            highlightCursor = document->find(searchString, highlightCursor, QTextDocument::FindWholeWords);
            if (!highlightCursor.isNull())
            {
                found = true;
                highlightCursor.movePosition(QTextCursor::WordRight, QTextCursor::KeepAnchor);
                highlightCursor.mergeCharFormat(underlineFormat);
            }
        }
        cursor.endEditBlock();
        isFirstTime = false;
 
        if (found == false) {
            QMessageBox::information(this, tr("Mot non trouve"), "Mot introuvable.");
        }
    }
    ui->textEdit->find(searchString, QTextDocument::FindWholeWords);
}
 
 
void textfinder::loadtextfile()
{
    QFile inputFile(":/input.txt");
    //inputFile.open(QIODevice::ReadOnly);
 
    QTextStream in(&inputFile);
    in.setCodec("UTF-8");
    QString line = in.readAll();
    inputFile.close();
 
    ui->textEdit->setPlainText(line);
    QTextCursor cursor = ui->textEdit->textCursor();
    cursor.movePosition(QTextCursor::Start, QTextCursor::MoveAnchor, 1);
 
    QString cheminImage = "C:/Users/etudiant/Documents/textfinder/img.png";
 
    QString texteFinal = ui->textEdit->toHtml() + "<img src = \""+ cheminImage +"\" alt = \"\"/>";
 
    ui->textEdit->setHtml(texteFinal);
}
 
void textfinder::loadtextfile(QString fileName)
{
    QFile inputFile(fileName);
    inputFile.open(QIODevice::ReadOnly);
 
    QTextStream in(&inputFile);
    in.setCodec("UTF-8");
    QString line = in.readAll();
    inputFile.close();
 
    ui->textEdit->setPlainText(line);
    QTextCursor cursor = ui->textEdit->textCursor();
    cursor.movePosition(QTextCursor::Start, QTextCursor::MoveAnchor, 1);
}
 
 
void textfinder::on_pushButton_clicked()
{
    QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "/home", tr("Text files (*.txt)"));
    loadtextfile(fileName);
}
 
void textfinder::dragEnterEvent(QDragEnterEvent *event)
{
    event->acceptProposedAction();
}
 
void textfinder::dropEvent(QDropEvent *event)
{
    QList<QUrl> urls = event->mimeData()->urls();
    QString fileName = urls.first().toLocalFile();
    event->accept();
    loadtextfile(fileName);
} | 
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