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#include <QtUiTools>
#include <QtGui>
#include "textfinder.h"
TextFinder::TextFinder(QWidget *parent)
: QWidget(parent)
{
QWidget *formWidget = loadUiFile();
ui_findButton = qFindChild<QPushButton*>(this, "findButton");
ui_textEdit = qFindChild<QTextEdit*>(this, "textEdit");
ui_lineEdit = qFindChild<QLineEdit*>(this, "lineEdit");
QMetaObject::connectSlotsByName(this);
loadTextFile();
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(formWidget);
setLayout(layout);
setWindowTitle(tr("Text Finder"));
isFirstTime = true;
}
QWidget* TextFinder::loadUiFile()
{
QUiLoader loader;
QFile file(":/forms/textfinder.ui");
file.open(QFile::ReadOnly);
QWidget *formWidget = loader.load(&file, this);
file.close();
return formWidget;
}
void TextFinder::loadTextFile()
{
QFile inputFile(":/forms/input.txt");
inputFile.open(QIODevice::ReadOnly);
QTextStream in(&inputFile);
QString line = in.readAll();
inputFile.close();
ui_textEdit->append(line);
ui_textEdit->setUndoRedoEnabled(false);
ui_textEdit->setUndoRedoEnabled(true);
}
void TextFinder::on_findButton_clicked()
{
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("Empty Search Field"),
"The search field is empty. Please enter a word and click Find.");
} else {
QTextCursor highlightCursor(document);
QTextCursor cursor(document);
cursor.beginEditBlock();
QTextCharFormat plainFormat(highlightCursor.charFormat());
QTextCharFormat colorFormat = plainFormat;
colorFormat.setForeground(Qt::red);
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(colorFormat);
}
}
cursor.endEditBlock();
isFirstTime = false;
if (found == false) {
QMessageBox::information(this, tr("Word Not Found"),
"Sorry, the word cannot be found.");
}
}
}</pre>
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distrib
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current
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i586
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