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Dialog for pdf image rendering
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Jakub Melka
233
PdfForQtViewer/pdfrendertoimagesdialog.cpp
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233
PdfForQtViewer/pdfrendertoimagesdialog.cpp
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// 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 "pdfrendertoimagesdialog.h"
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#include "ui_pdfrendertoimagesdialog.h"
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#include "pdfutils.h"
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#include "pdfwidgetutils.h"
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#include <QFileDialog>
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namespace pdfviewer
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{
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PDFRenderToImagesDialog::PDFRenderToImagesDialog(QWidget* parent) :
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QDialog(parent),
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ui(new Ui::PDFRenderToImagesDialog),
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m_isLoadingData(false)
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{
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ui->setupUi(this);
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// Load image formats
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for (const QByteArray& format : m_imageWriterSettings.getFormats())
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{
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ui->formatComboBox->addItem(QString::fromLatin1(format), format);
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}
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connect(ui->pagesAllButton, &QRadioButton::clicked, this, &PDFRenderToImagesDialog::onPagesButtonClicked);
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connect(ui->pagesSelectButton, &QRadioButton::clicked, this, &PDFRenderToImagesDialog::onPagesButtonClicked);
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connect(ui->selectedPagesEdit, &QLineEdit::textChanged, this, &PDFRenderToImagesDialog::onSelectedPagesChanged);
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connect(ui->directoryEdit, &QLineEdit::textChanged, this, &PDFRenderToImagesDialog::onDirectoryChanged);
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connect(ui->fileTemplateEdit, &QLineEdit::textChanged, this, &PDFRenderToImagesDialog::onFileTemplateChanged);
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connect(ui->resolutionDPIButton, &QRadioButton::clicked, this, &PDFRenderToImagesDialog::onResolutionButtonClicked);
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connect(ui->resolutionPixelsButton, &QRadioButton::clicked, this, &PDFRenderToImagesDialog::onResolutionButtonClicked);
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connect(ui->resolutionDPIEdit, QOverload<int>::of(&QSpinBox::valueChanged), this, &PDFRenderToImagesDialog::onResolutionDPIChanged);
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connect(ui->resolutionPixelsEdit, QOverload<int>::of(&QSpinBox::valueChanged), this, &PDFRenderToImagesDialog::onResolutionPixelsChanged);
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connect(ui->formatComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &PDFRenderToImagesDialog::onFormatChanged);
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connect(ui->subtypeComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &PDFRenderToImagesDialog::onSubtypeChanged);
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connect(ui->compressionEdit, QOverload<int>::of(&QSpinBox::valueChanged), this, &PDFRenderToImagesDialog::onCompressionChanged);
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connect(ui->qualityEdit, QOverload<int>::of(&QSpinBox::valueChanged), this, &PDFRenderToImagesDialog::onQualityChanged);
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connect(ui->gammaEdit, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this, &PDFRenderToImagesDialog::onGammaChanged);
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connect(ui->optimizedWriteCheckBox, &QCheckBox::clicked, this, &PDFRenderToImagesDialog::onOptimizedWriteChanged);
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connect(ui->progressiveScanWriteCheckBox, &QCheckBox::clicked, this, &PDFRenderToImagesDialog::onProgressiveScanWriteChanged);
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loadImageWriterSettings();
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loadImageExportSettings();
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PDFWidgetUtils::scaleWidget(this, QSize(1000, 600));
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}
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PDFRenderToImagesDialog::~PDFRenderToImagesDialog()
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{
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delete ui;
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}
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void PDFRenderToImagesDialog::loadImageWriterSettings()
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{
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if (m_isLoadingData)
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{
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return;
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}
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pdf::PDFTemporaryValueChange guard(&m_isLoadingData, true);
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ui->formatComboBox->setCurrentIndex(ui->formatComboBox->findData(m_imageWriterSettings.getCurrentFormat()));
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ui->subtypeComboBox->setUpdatesEnabled(false);
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ui->subtypeComboBox->clear();
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for (const QByteArray& subtype : m_imageWriterSettings.getSubtypes())
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{
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ui->subtypeComboBox->addItem(QString::fromLatin1(subtype), subtype);
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}
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ui->subtypeComboBox->setCurrentIndex(ui->subtypeComboBox->findData(m_imageWriterSettings.getCurrentSubtype()));
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ui->subtypeComboBox->setUpdatesEnabled(true);
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ui->compressionEdit->setValue(m_imageWriterSettings.getCompression());
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ui->qualityEdit->setValue(m_imageWriterSettings.getQuality());
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ui->gammaEdit->setValue(m_imageWriterSettings.getGamma());
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ui->optimizedWriteCheckBox->setChecked(m_imageWriterSettings.hasOptimizedWrite());
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ui->progressiveScanWriteCheckBox->setChecked(m_imageWriterSettings.hasProgressiveScanWrite());
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ui->subtypeComboBox->setEnabled(m_imageWriterSettings.isOptionSupported(QImageIOHandler::SupportedSubTypes));
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ui->compressionEdit->setEnabled(m_imageWriterSettings.isOptionSupported(QImageIOHandler::CompressionRatio));
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ui->qualityEdit->setEnabled(m_imageWriterSettings.isOptionSupported(QImageIOHandler::Quality));
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ui->gammaEdit->setEnabled(m_imageWriterSettings.isOptionSupported(QImageIOHandler::Gamma));
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ui->optimizedWriteCheckBox->setEnabled(m_imageWriterSettings.isOptionSupported(QImageIOHandler::OptimizedWrite));
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ui->progressiveScanWriteCheckBox->setEnabled(m_imageWriterSettings.isOptionSupported(QImageIOHandler::ProgressiveScanWrite));
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}
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void PDFRenderToImagesDialog::loadImageExportSettings()
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{
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if (m_isLoadingData)
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{
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return;
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}
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pdf::PDFTemporaryValueChange guard(&m_isLoadingData, true);
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const pdf::PDFPageImageExportSettings::PageSelectionMode pageSelectionMode = m_imageExportSettings.getPageSelectionMode();
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ui->pagesAllButton->setChecked(pageSelectionMode == pdf::PDFPageImageExportSettings::PageSelectionMode::All);
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ui->pagesSelectButton->setChecked(pageSelectionMode == pdf::PDFPageImageExportSettings::PageSelectionMode::Selection);
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if (pageSelectionMode == pdf::PDFPageImageExportSettings::PageSelectionMode::Selection)
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{
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ui->selectedPagesEdit->setEnabled(true);
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ui->selectedPagesEdit->setText(m_imageExportSettings.getPageSelection());
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}
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else
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{
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ui->selectedPagesEdit->setEnabled(false);
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ui->selectedPagesEdit->setText(QString());
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}
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ui->directoryEdit->setText(m_imageExportSettings.getDirectory());
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ui->fileTemplateEdit->setText(m_imageExportSettings.getFileTemplate());
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const pdf::PDFPageImageExportSettings::ResolutionMode resolutionMode = m_imageExportSettings.getResolutionMode();
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ui->resolutionDPIButton->setChecked(resolutionMode == pdf::PDFPageImageExportSettings::ResolutionMode::DPI);
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ui->resolutionPixelsButton->setChecked(resolutionMode == pdf::PDFPageImageExportSettings::ResolutionMode::Pixels);
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ui->resolutionDPIEdit->setValue(m_imageExportSettings.getDpiResolution());
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ui->resolutionPixelsEdit->setValue(m_imageExportSettings.getPixelResolution());
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ui->resolutionDPIEdit->setEnabled(resolutionMode == pdf::PDFPageImageExportSettings::ResolutionMode::DPI);
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ui->resolutionPixelsEdit->setEnabled(resolutionMode == pdf::PDFPageImageExportSettings::ResolutionMode::Pixels);
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}
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void PDFRenderToImagesDialog::onFormatChanged()
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{
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m_imageWriterSettings.selectFormat(ui->formatComboBox->currentData().toByteArray());
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loadImageWriterSettings();
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}
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void PDFRenderToImagesDialog::onSubtypeChanged()
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{
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m_imageWriterSettings.setCurrentSubtype(ui->subtypeComboBox->currentData().toByteArray());
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}
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void PDFRenderToImagesDialog::onPagesButtonClicked(bool checked)
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{
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if (checked)
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{
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const pdf::PDFPageImageExportSettings::PageSelectionMode pageSelectionMode = (sender() == ui->pagesAllButton) ? pdf::PDFPageImageExportSettings::PageSelectionMode::All
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: pdf::PDFPageImageExportSettings::PageSelectionMode::Selection;
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m_imageExportSettings.setPageSelectionMode(pageSelectionMode);
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loadImageExportSettings();
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}
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}
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void PDFRenderToImagesDialog::onSelectedPagesChanged(const QString& text)
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{
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m_imageExportSettings.setPageSelection(text);
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}
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void PDFRenderToImagesDialog::onDirectoryChanged(const QString& text)
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{
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m_imageExportSettings.setDirectory(text);
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}
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void PDFRenderToImagesDialog::onFileTemplateChanged(const QString& text)
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{
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m_imageExportSettings.setFileTemplate(text);
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}
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void PDFRenderToImagesDialog::onResolutionButtonClicked(bool checked)
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{
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if (checked)
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{
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const pdf::PDFPageImageExportSettings::ResolutionMode resolutionMode = (sender() == ui->resolutionDPIButton) ? pdf::PDFPageImageExportSettings::ResolutionMode::DPI
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: pdf::PDFPageImageExportSettings::ResolutionMode::Pixels;
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m_imageExportSettings.setResolutionMode(resolutionMode);
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loadImageExportSettings();
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}
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}
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void PDFRenderToImagesDialog::onResolutionDPIChanged(int value)
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{
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m_imageExportSettings.setDpiResolution(value);
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}
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void PDFRenderToImagesDialog::onResolutionPixelsChanged(int value)
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{
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m_imageExportSettings.setPixelResolution(value);
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}
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void PDFRenderToImagesDialog::onCompressionChanged(int value)
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{
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m_imageWriterSettings.setCompression(value);
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}
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void PDFRenderToImagesDialog::onQualityChanged(int value)
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{
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m_imageWriterSettings.setQuality(value);
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}
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void PDFRenderToImagesDialog::onGammaChanged(double value)
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{
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m_imageWriterSettings.setGamma(value);
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}
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void PDFRenderToImagesDialog::onOptimizedWriteChanged(bool value)
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{
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m_imageWriterSettings.setOptimizedWrite(value);
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}
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void PDFRenderToImagesDialog::onProgressiveScanWriteChanged(bool value)
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{
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m_imageWriterSettings.setProgressiveScanWrite(value);
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}
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void PDFRenderToImagesDialog::on_selectDirectoryButton_clicked()
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{
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QString directory = QFileDialog::getExistingDirectory(this, tr("Select output directory"), ui->directoryEdit->text());
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if (!directory.isEmpty())
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{
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ui->directoryEdit->setText(directory);
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}
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}
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} // namespace pdfviewer
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