e510b6e466
Fixed the include statements added QT+=widgets in examples/network to get them to compile. Will need something better than doing it manually.
156 lines
4.7 KiB
C++
156 lines
4.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtUiTools>
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#include <QtWidgets>
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#include "textfinder.h"
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//! [0]
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TextFinder::TextFinder(QWidget *parent)
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: QWidget(parent)
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{
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QWidget *formWidget = loadUiFile();
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//! [1]
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ui_findButton = findChild<QPushButton*>("findButton");
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ui_textEdit = findChild<QTextEdit*>("textEdit");
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ui_lineEdit = findChild<QLineEdit*>("lineEdit");
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//! [0] //! [1]
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//! [2]
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QMetaObject::connectSlotsByName(this);
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//! [2]
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//! [3a]
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loadTextFile();
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//! [3a]
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//! [3b]
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QVBoxLayout *layout = new QVBoxLayout;
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layout->addWidget(formWidget);
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setLayout(layout);
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//! [3b]
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//! [3c]
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setWindowTitle(tr("Text Finder"));
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isFirstTime = true;
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}
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//! [3c]
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//! [4]
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QWidget* TextFinder::loadUiFile()
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{
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QUiLoader loader;
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QFile file(":/forms/textfinder.ui");
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file.open(QFile::ReadOnly);
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QWidget *formWidget = loader.load(&file, this);
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file.close();
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return formWidget;
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}
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//! [4]
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//! [5]
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void TextFinder::loadTextFile()
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{
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QFile inputFile(":/forms/input.txt");
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inputFile.open(QIODevice::ReadOnly);
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QTextStream in(&inputFile);
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QString line = in.readAll();
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inputFile.close();
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ui_textEdit->append(line);
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ui_textEdit->setUndoRedoEnabled(false);
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ui_textEdit->setUndoRedoEnabled(true);
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}
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//! [5]
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//! [6] //! [7]
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void TextFinder::on_findButton_clicked()
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{
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QString searchString = ui_lineEdit->text();
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QTextDocument *document = ui_textEdit->document();
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bool found = false;
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if (isFirstTime == false)
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document->undo();
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if (searchString.isEmpty()) {
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QMessageBox::information(this, tr("Empty Search Field"),
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"The search field is empty. Please enter a word and click Find.");
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} else {
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QTextCursor highlightCursor(document);
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QTextCursor cursor(document);
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cursor.beginEditBlock();
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//! [6]
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QTextCharFormat plainFormat(highlightCursor.charFormat());
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QTextCharFormat colorFormat = plainFormat;
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colorFormat.setForeground(Qt::red);
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while (!highlightCursor.isNull() && !highlightCursor.atEnd()) {
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highlightCursor = document->find(searchString, highlightCursor, QTextDocument::FindWholeWords);
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if (!highlightCursor.isNull()) {
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found = true;
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highlightCursor.movePosition(QTextCursor::WordRight,
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QTextCursor::KeepAnchor);
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highlightCursor.mergeCharFormat(colorFormat);
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}
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}
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//! [8]
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cursor.endEditBlock();
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//! [7] //! [9]
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isFirstTime = false;
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if (found == false) {
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QMessageBox::information(this, tr("Word Not Found"),
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"Sorry, the word cannot be found.");
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}
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}
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}
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//! [8] //! [9]
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