File indexing completed on 2024-04-28 15:51:42

 /*
     SPDX-FileCopyrightText: 2006 Pino Toscano <toscano.pino@tiscali.it>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "dlgaccessibility.h"
 
 #include "settings.h"
 
 #include <KColorButton>
 #include <KLocalizedString>
 
 #include <QCheckBox>
 #include <QComboBox>
 #include <QFormLayout>
 #include <QLabel>
 #include <QStackedWidget>
 
 #if HAVE_SPEECH
 #include <QTextToSpeech>
 #endif
 
 DlgAccessibility::DlgAccessibility(QWidget *parent)
     : QWidget(parent)
     , m_colorModeConfigStack(new QStackedWidget(this))
 {
     QFormLayout *layout = new QFormLayout(this);
 
     // BEGIN Checkboxes: draw border around images/links
     // ### not working yet, hide for now
     // QCheckBox *highlightImages = new QCheckBox(this);
     // highlightImages->setText(i18nc("@option:check Config dialog, accessibility page", "Draw border around images"));
     // highlightImages->setObjectName(QStringLiteral("kcfg_HighlightImages"));
     // layout->addRow(QString(), highlightImages);
 
     QCheckBox *highlightLinks = new QCheckBox(this);
     highlightLinks->setText(i18nc("@option:check Config dialog, accessibility page", "Draw border around links"));
     highlightLinks->setObjectName(QStringLiteral("kcfg_HighlightLinks"));
     layout->addRow(QString(), highlightLinks);
     // END Checkboxes: draw border around images/links
 
     layout->addRow(new QLabel(this));
 
     // BEGIN Change colors section
     // Checkbox: enable Change Colors feature
     QCheckBox *enableChangeColors = new QCheckBox(this);
     enableChangeColors->setText(i18nc("@option:check Config dialog, accessibility page", "Change colors"));
     enableChangeColors->setObjectName(QStringLiteral("kcfg_ChangeColors"));
     layout->addRow(QString(), enableChangeColors);
 
     // Label: Performance warning
     QLabel *warningLabel = new QLabel(this);
     warningLabel->setText(i18nc("@info Config dialog, accessibility page", "<b>Warning:</b> these options can badly affect drawing speed."));
     warningLabel->setWordWrap(true);
     layout->addRow(warningLabel);
 
     // Combobox: color modes
     QComboBox *colorMode = new QComboBox(this);
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Invert colors"));
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Change paper color"));
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Change dark & light colors"));
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Convert to black & white"));
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Invert lightness"));
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Invert luma (sRGB linear)"));
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Invert luma (symmetric)"));
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Shift hue positive"));
     colorMode->addItem(i18nc("@item:inlistbox Config dialog, accessibility page", "Shift hue negative"));
     colorMode->setObjectName(QStringLiteral("kcfg_RenderMode"));
     layout->addRow(i18nc("@label:listbox Config dialog, accessibility page", "Color mode:"), colorMode);
 
     m_colorModeConfigStack->setSizePolicy({QSizePolicy::Preferred, QSizePolicy::Fixed});
 
     // BEGIN Empty page (Only needed to hide the other pages, but it shouldn’t be huge...)
     QWidget *pageWidget = new QWidget(this);
     QFormLayout *pageLayout = new QFormLayout(pageWidget);
     m_colorModeConfigStack->addWidget(pageWidget);
     // END Empty page
 
     // BEGIN Change paper color page
     pageWidget = new QWidget(this);
     pageLayout = new QFormLayout(pageWidget);
 
     // Color button: paper color
     KColorButton *paperColor = new KColorButton(this);
     paperColor->setObjectName(QStringLiteral("kcfg_PaperColor"));
     pageLayout->addRow(i18nc("@label:chooser Config dialog, accessibility page", "Paper color:"), paperColor);
 
     m_colorModeConfigStack->addWidget(pageWidget);
     // END Change paper color page
 
     // BEGIN Change to dark & light colors page
     pageWidget = new QWidget(this);
     pageLayout = new QFormLayout(pageWidget);
 
     // Color button: dark color
     KColorButton *darkColor = new KColorButton(this);
     darkColor->setObjectName(QStringLiteral("kcfg_RecolorForeground"));
     pageLayout->addRow(i18nc("@label:chooser Config dialog, accessibility page", "Dark color:"), darkColor);
 
     // Color button: light color
     KColorButton *lightColor = new KColorButton(this);
     lightColor->setObjectName(QStringLiteral("kcfg_RecolorBackground"));
     pageLayout->addRow(i18nc("@label:chooser Config dialog, accessibility page", "Light color:"), lightColor);
 
     m_colorModeConfigStack->addWidget(pageWidget);
     // END Change to dark & light colors page
 
     // BEGIN Convert to black & white page
     pageWidget = new QWidget(this);
     pageLayout = new QFormLayout(pageWidget);
 
     // Slider: threshold
     QSlider *thresholdSlider = new QSlider(this);
     thresholdSlider->setMinimum(2);
     thresholdSlider->setMaximum(253);
     thresholdSlider->setOrientation(Qt::Horizontal);
     thresholdSlider->setObjectName(QStringLiteral("kcfg_BWThreshold"));
     pageLayout->addRow(i18nc("@label:slider Config dialog, accessibility page", "Threshold:"), thresholdSlider);
 
     // Slider: contrast
     QSlider *contrastSlider = new QSlider(this);
     contrastSlider->setMinimum(2);
     contrastSlider->setMaximum(6);
     contrastSlider->setOrientation(Qt::Horizontal);
     contrastSlider->setObjectName(QStringLiteral("kcfg_BWContrast"));
     pageLayout->addRow(i18nc("@label:slider Config dialog, accessibility page", "Contrast:"), contrastSlider);
 
     m_colorModeConfigStack->addWidget(pageWidget);
     // END Convert to black & white page
 
     layout->addRow(QString(), m_colorModeConfigStack);
 
     // Setup controls enabled states:
     colorMode->setCurrentIndex(0);
     slotColorModeSelected(0);
     connect(colorMode, qOverload<int>(&QComboBox::currentIndexChanged), this, &DlgAccessibility::slotColorModeSelected);
 
     enableChangeColors->setChecked(false);
     colorMode->setEnabled(false);
     connect(enableChangeColors, &QCheckBox::toggled, colorMode, &QComboBox::setEnabled);
     m_colorModeConfigStack->setEnabled(false);
     connect(enableChangeColors, &QCheckBox::toggled, m_colorModeConfigStack, &QWidget::setEnabled);
     // END Change colors section
 
 #if HAVE_SPEECH
     layout->addRow(new QLabel(this));
 
     // BEGIN Text-to-speech section
     m_ttsEngineBox = new QComboBox(this);
     // Populate tts engines and use their names directly as key and item text:
     const QStringList engines = QTextToSpeech::availableEngines();
     for (const QString &engine : engines) {
         m_ttsEngineBox->addItem(engine);
     }
     m_ttsEngineBox->setProperty("kcfg_property", QByteArray("currentText"));
     m_ttsEngineBox->setObjectName(QStringLiteral("kcfg_ttsEngine"));
     layout->addRow(i18nc("@label:listbox Config dialog, accessibility page", "Text-to-speech engine:"), m_ttsEngineBox);
 
     connect(m_ttsEngineBox, qOverload<int>(&QComboBox::currentIndexChanged), this, &DlgAccessibility::slotTTSEngineChanged);
 
     m_ttsVoiceBox = new QComboBox(this);
     m_ttsVoiceBox->setProperty("kcfg_property", QByteArray("currentText"));
     m_ttsVoiceBox->setObjectName(QStringLiteral("kcfg_ttsVoice"));
     layout->addRow(i18nc("&label:listbox Config dialog, accessibility page", "Text-to-speech voice:"), m_ttsVoiceBox);
 
     slotTTSEngineChanged();
     // END Text-to-speech section
 #endif
 }
 
 #if HAVE_SPEECH
 void DlgAccessibility::slotTTSEngineChanged()
 {
     QString engine = m_ttsEngineBox->currentText();
     QTextToSpeech *ttsEngine = new QTextToSpeech(engine);
     const QVector<QVoice> voices = ttsEngine->availableVoices();
     m_ttsVoiceBox->clear();
     for (const QVoice &voice : voices) {
         m_ttsVoiceBox->addItem(voice.name());
     }
     delete ttsEngine;
 }
 #endif
 
 void DlgAccessibility::slotColorModeSelected(int mode)
 {
     if (mode == Okular::Settings::EnumRenderMode::Paper) {
         m_colorModeConfigStack->setCurrentIndex(1);
     } else if (mode == Okular::Settings::EnumRenderMode::Recolor) {
         m_colorModeConfigStack->setCurrentIndex(2);
     } else if (mode == Okular::Settings::EnumRenderMode::BlackWhite) {
         m_colorModeConfigStack->setCurrentIndex(3);
     } else {
         m_colorModeConfigStack->setCurrentIndex(0);
     }
 }