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authorAlexis Menard <alexis.menard@nokia.com>2009-04-17 14:06:06 (GMT)
committerAlexis Menard <alexis.menard@nokia.com>2009-04-17 14:06:06 (GMT)
commitf15b8a83e2e51955776a3f07cb85ebfc342dd8ef (patch)
treec5dc684986051654898db11ce73e03b9fec8db99 /examples/uitools/textfinder/textfinder.cpp
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Initial import of statemachine branch from the old kinetic repository
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diff --git a/examples/uitools/textfinder/textfinder.cpp b/examples/uitools/textfinder/textfinder.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtUiTools>
+#include <QtGui>
+#include "textfinder.h"
+
+//! [0]
+TextFinder::TextFinder(QWidget *parent)
+ : QWidget(parent)
+{
+ QWidget *formWidget = loadUiFile();
+
+//! [1]
+ ui_findButton = qFindChild<QPushButton*>(this, "findButton");
+ ui_textEdit = qFindChild<QTextEdit*>(this, "textEdit");
+ ui_lineEdit = qFindChild<QLineEdit*>(this, "lineEdit");
+//! [0] //! [1]
+
+//! [2]
+ QMetaObject::connectSlotsByName(this);
+//! [2]
+
+//! [3a]
+ loadTextFile();
+//! [3a]
+
+//! [3b]
+ QVBoxLayout *layout = new QVBoxLayout;
+ layout->addWidget(formWidget);
+ setLayout(layout);
+//! [3b]
+
+//! [3c]
+ setWindowTitle(tr("Text Finder"));
+ isFirstTime = true;
+}
+//! [3c]
+
+//! [4]
+QWidget* TextFinder::loadUiFile()
+{
+ QUiLoader loader;
+
+ QFile file(":/forms/textfinder.ui");
+ file.open(QFile::ReadOnly);
+
+ QWidget *formWidget = loader.load(&file, this);
+ file.close();
+
+ return formWidget;
+}
+//! [4]
+
+//! [5]
+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);
+}
+//! [5]
+
+//! [6] //! [7]
+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 == "") {
+ 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();
+//! [6]
+
+ 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);
+ }
+ }
+
+//! [8]
+ cursor.endEditBlock();
+//! [7] //! [9]
+ isFirstTime = false;
+
+ if (found == false) {
+ QMessageBox::information(this, tr("Word Not Found"),
+ "Sorry, the word cannot be found.");
+ }
+ }
+}
+//! [8] //! [9]