mirror of https://github.com/JakubMelka/PDF4QT.git
127 lines
4.0 KiB
C++
127 lines
4.0 KiB
C++
// Copyright (C) 2020 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// PdfForQt 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#include "pdfadvancedfindwidget.h"
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#include "ui_pdfadvancedfindwidget.h"
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#include "pdfcompiler.h"
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#include "pdfdocument.h"
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#include "pdfdrawspacecontroller.h"
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#include <QMessageBox>
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namespace pdfviewer
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{
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PDFAdvancedFindWidget::PDFAdvancedFindWidget(pdf::PDFDrawWidgetProxy* proxy, QWidget* parent) :
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QWidget(parent),
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ui(new Ui::PDFAdvancedFindWidget),
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m_proxy(proxy),
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m_document(nullptr)
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{
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ui->setupUi(this);
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connect(ui->regularExpressionsCheckbox, &QCheckBox::clicked, this, &PDFAdvancedFindWidget::updateUI);
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connect(m_proxy, &pdf::PDFDrawWidgetProxy::textLayoutChanged, this, &PDFAdvancedFindWidget::performSearch);
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updateUI();
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}
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PDFAdvancedFindWidget::~PDFAdvancedFindWidget()
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{
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delete ui;
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}
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void PDFAdvancedFindWidget::setDocument(const pdf::PDFDocument* document)
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{
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if (m_document != document)
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{
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m_document = document;
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updateUI();
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}
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}
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void PDFAdvancedFindWidget::on_searchButton_clicked()
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{
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m_parameters.phrase = ui->searchPhraseEdit->text();
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m_parameters.isCaseSensitive = ui->caseSensitiveCheckBox->isChecked();
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m_parameters.isWholeWordsOnly = ui->wholeWordsOnlyCheckBox->isChecked();
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m_parameters.isRegularExpression = ui->regularExpressionsCheckbox->isChecked();
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m_parameters.isDotMatchingEverything = ui->dotMatchesEverythingCheckBox->isChecked();
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m_parameters.isMultiline = ui->multilineMatchingCheckBox->isChecked();
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m_parameters.isSearchFinished = m_parameters.phrase.isEmpty();
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if (m_parameters.isSearchFinished)
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{
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// We have nothing to search for
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return;
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}
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// Validate regular expression
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if (m_parameters.isRegularExpression)
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{
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QRegularExpression expression(m_parameters.phrase);
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if (!expression.isValid())
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{
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m_parameters.isSearchFinished = true;
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const int patternErrorOffset = expression.patternErrorOffset();
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QMessageBox::critical(this, tr("Search error"), tr("Search phrase regular expression has error '%1' near symbol %2.").arg(expression.errorString()).arg(patternErrorOffset));
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ui->searchPhraseEdit->setFocus();
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ui->searchPhraseEdit->setSelection(patternErrorOffset, 1);
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return;
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}
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}
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pdf::PDFAsynchronousTextLayoutCompiler* compiler = m_proxy->getTextLayoutCompiler();
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if (compiler->isTextLayoutReady())
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{
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performSearch();
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}
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else
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{
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compiler->makeTextLayout();
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}
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}
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void PDFAdvancedFindWidget::updateUI()
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{
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const bool enableUI = m_document && m_document->getCatalog()->getPageCount() > 0;
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const bool enableRegularExpressionUI = enableUI && ui->regularExpressionsCheckbox->isChecked();
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ui->searchForGroupBox->setEnabled(enableUI);
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ui->regularExpressionSettingsGroupBox->setEnabled(enableRegularExpressionUI);
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}
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void PDFAdvancedFindWidget::performSearch()
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{
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if (m_parameters.isSearchFinished)
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{
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return;
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}
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m_parameters.isSearchFinished = true;
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pdf::PDFAsynchronousTextLayoutCompiler* compiler = m_proxy->getTextLayoutCompiler();
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if (!compiler->isTextLayoutReady())
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{
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// Text layout is not ready yet
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return;
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}
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}
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} // namespace pdfviewer
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