156 lines
4.9 KiB
C++
156 lines
4.9 KiB
C++
/***************************************************************************
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* Copyright (c) 2005 Werner Mayer <werner.wm.mayer@gmx.de> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "regexpdialog.h"
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#include "ui_regexpdialog.h"
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#include <qcheckbox.h>
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#include <qlabel.h>
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#include <qlineedit.h>
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#include <qmessagebox.h>
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#include <qtextedit.h>
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RegExpDialog::RegExpDialog(QWidget* parent)
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: QDialog(parent), ui(new Ui_RegExpDialog())
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{
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ui->setupUi(this);
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rxhilighter = new RegExpSyntaxHighlighter(ui->textEdit1);
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connect(ui->lineEdit1, SIGNAL(textChanged(const QString &)),
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this, SLOT(performRegExp()));
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}
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RegExpDialog::~RegExpDialog()
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{
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delete ui;
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}
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void RegExpDialog::performRegExp()
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{
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QString txt = ui->lineEdit1->text();
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if (txt.isEmpty()) {
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rxhilighter->resethighlight();
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return;
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}
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QRegExp rx(txt);
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rx.setCaseSensitivity(ui->checkBox1->isChecked() ? Qt::CaseSensitive : Qt::CaseInsensitive);
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rx.setPatternSyntax(ui->checkBox2->isChecked() ? QRegExp::Wildcard : QRegExp::RegExp);
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rx.setMinimal(ui->checkBox3->isChecked());
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// evaluate regular expression
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ui->textLabel4->setText(rx.errorString());
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if (!rx.isValid()) {
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rxhilighter->resethighlight();
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return; // invalid expression
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}
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rxhilighter->highlightMatchedText(rx);
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}
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void RegExpDialog::about()
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{
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QString msg = "This is a tool for playing around with regular expressions.";
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QMessageBox::information(this, "RegExp Explorer", msg);
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}
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// -------------------------------------------------------------
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RegExpSyntaxHighlighter::RegExpSyntaxHighlighter (QTextEdit * textEdit)
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: QSyntaxHighlighter(textEdit)
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{
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}
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RegExpSyntaxHighlighter::~RegExpSyntaxHighlighter()
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{
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}
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void RegExpSyntaxHighlighter::highlightBlock (const QString & text)
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{
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QTextCharFormat regFormat;
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regFormat.setForeground(Qt::black);
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regFormat.setFontWeight(QFont::Normal);
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setFormat(0, text.length(), regFormat);
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if (regexp.isEmpty())
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return; // empty regular expression
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int pos = 0;
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int last = -1;
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regFormat.setFontWeight(QFont::Bold);
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regFormat.setForeground(Qt::blue);
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while ((pos = regexp.indexIn(text, pos)) != -1) {
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if (last == pos)
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break;
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QString sub = text.mid(pos, regexp.matchedLength());
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if (!sub.isEmpty()) {
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setFormat(pos, sub.length(), regFormat);
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}
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pos += regexp.matchedLength();
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last=pos;
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}
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}
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#if 0
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int RegExpSyntaxHighlighter::highlightParagraph ( const QString & text, int /*endStateOfLastPara*/ )
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{
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// reset format
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QFont font = textEdit()->font();
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font.setBold( false );
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setFormat(0, text.length(), font, Qt::black );
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if (regexp.isEmpty())
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return 0; // empty regular expression
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int pos = 0;
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int last = -1;
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font.setBold(true);
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while ( (pos = regexp.indexIn(text, pos)) != -1 ) {
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if (last == pos)
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break;
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QString sub = text.mid( pos, regexp.matchedLength());
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if (!sub.isEmpty()) {
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setFormat(pos, sub.length(), font, Qt::blue );
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}
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pos += regexp.matchedLength();
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last=pos;
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}
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return 0;
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}
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#endif
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void RegExpSyntaxHighlighter::highlightMatchedText(const QRegExp& rx)
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{
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regexp = rx;
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rehighlight();
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}
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void RegExpSyntaxHighlighter::resethighlight()
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{
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regexp.setPattern("");
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rehighlight();
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}
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