File indexing completed on 2024-04-28 15:14:03

 /***************************************************************************
     File                 : SettingsWorksheetPage.cpp
     Project              : LabPlot
     Description          : settings page for Worksheet
     --------------------------------------------------------------------
     Copyright            : (C) 2008-2017 Alexander Semke (alexander.semke@web.de)
 
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *  This program is free software; you can redistribute it and/or modify   *
  *  it under the terms of the GNU General Public License as published by   *
  *  the Free Software Foundation; either version 2 of the License, or      *
  *  (at your option) any later version.                                    *
  *                                                                         *
  *  This program is distributed in the hope that it will be useful,        *
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  *  GNU General Public License for more details.                           *
  *                                                                         *
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program; if not, write to the Free Software           *
  *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
  *   Boston, MA  02110-1301  USA                                           *
  *                                                                         *
  ***************************************************************************/
 
 #include "SettingsWorksheetPage.h"
 #include "tools/TeXRenderer.h"
 #include "kdefrontend/widgets/ThemesComboBox.h"
 
 #include <KLocalizedString>
 #include <KSharedConfig>
 #include <KConfigGroup>
 
 /**
  * \brief Page for the 'General' settings of the Labplot settings dialog.
  */
 SettingsWorksheetPage::SettingsWorksheetPage(QWidget* parent) : SettingsPage(parent) {
     ui.setupUi(this);
 
     m_cbThemes = new ThemesComboBox();
     ui.gridLayout->addWidget(m_cbThemes, 1, 4, 1, 1);
     QString info = i18n("Default theme for newly created worksheets and worksheet objects");
     ui.lTheme->setToolTip(info);
     m_cbThemes->setToolTip(info);
 
     const int size = ui.cbTexEngine->height();
     ui.lLatexWarning->setPixmap( QIcon::fromTheme(QLatin1String("state-warning")).pixmap(size, size) );
 
     //add available TeX typesetting engines
     if (TeXRenderer::executableExists(QLatin1String("lualatex")))
         ui.cbTexEngine->addItem(QLatin1String("LuaLaTeX"), QLatin1String("lualatex"));
 
     if (TeXRenderer::executableExists(QLatin1String("xelatex")))
         ui.cbTexEngine->addItem(QLatin1String("XeLaTex"), QLatin1String("xelatex"));
 
     if (TeXRenderer::executableExists(QLatin1String("pdflatex")))
         ui.cbTexEngine->addItem(QLatin1String("pdfLaTeX"), QLatin1String("pdflatex"));
 
     if (TeXRenderer::executableExists(QLatin1String("latex")))
         ui.cbTexEngine->addItem(QLatin1String("LaTeX"), QLatin1String("latex"));
 
     connect(m_cbThemes, &ThemesComboBox::currentThemeChanged, this, &SettingsWorksheetPage::changed);
     connect(ui.chkPresenterModeInteractive, &QCheckBox::stateChanged, this, &SettingsWorksheetPage::changed);
     connect(ui.chkDoubleBuffering, &QCheckBox::stateChanged, this, &SettingsWorksheetPage::changed);
     connect(ui.cbTexEngine, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &SettingsWorksheetPage::changed);
     connect(ui.cbTexEngine, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &SettingsWorksheetPage::checkTeX);
 
     loadSettings();
 }
 
 void SettingsWorksheetPage::applySettings() {
     if (!m_changed)
         return;
 
     KConfigGroup group = KSharedConfig::openConfig()->group(QLatin1String("Settings_Worksheet"));
     if (m_cbThemes->currentText() == i18n("Default"))
         group.writeEntry(QLatin1String("Theme"), QString());
     else
         group.writeEntry(QLatin1String("Theme"), m_cbThemes->currentText());
     group.writeEntry(QLatin1String("PresenterModeInteractive"), ui.chkPresenterModeInteractive->isChecked());
     group.writeEntry(QLatin1String("DoubleBuffering"), ui.chkDoubleBuffering->isChecked());
     group.writeEntry(QLatin1String("LaTeXEngine"), ui.cbTexEngine->itemData(ui.cbTexEngine->currentIndex()));
 }
 
 void SettingsWorksheetPage::restoreDefaults() {
     m_cbThemes->setItemText(0, i18n("Default")); //default theme
     ui.chkPresenterModeInteractive->setChecked(false);
     ui.chkDoubleBuffering->setChecked(true);
 
     int index = ui.cbTexEngine->findData(QLatin1String("xelatex"));
     if (index == -1) {
         index = ui.cbTexEngine->findData(QLatin1String("lualatex"));
         if (index == -1) {
             index = ui.cbTexEngine->findData(QLatin1String("pdflatex"));
             if (index == -1)
                 index = ui.cbTexEngine->findData(QLatin1String("latex"));
         }
     }
     ui.cbTexEngine->setCurrentIndex(index);
 }
 
 void SettingsWorksheetPage::loadSettings() {
     const KConfigGroup group = KSharedConfig::openConfig()->group(QLatin1String("Settings_Worksheet"));
     m_cbThemes->setItemText(0, group.readEntry(QLatin1String("Theme"), ""));
     ui.chkPresenterModeInteractive->setChecked(group.readEntry(QLatin1String("PresenterModeInteractive"), false));
     ui.chkDoubleBuffering->setChecked(group.readEntry(QLatin1String("DoubleBuffering"), true));
 
     QString engine = group.readEntry(QLatin1String("LaTeXEngine"), "");
     int index = -1;
     if (engine.isEmpty()) {
         //empty string was found in the settings (either the settings never saved or no tex engine was available during the last save)
         //->check whether the latex environment was installed in the meantime
         index = ui.cbTexEngine->findData(QLatin1String("xelatex"));
         if (index == -1) {
             index = ui.cbTexEngine->findData(QLatin1String("lualatex"));
             if (index == -1) {
                 index = ui.cbTexEngine->findData(QLatin1String("pdflatex"));
                 if (index == -1)
                     index = ui.cbTexEngine->findData(QLatin1String("latex"));
             }
         }
 
         if (index != -1) {
             //one of the tex engines was found -> automatically save it in the settings without any user action
             KConfigGroup group = KSharedConfig::openConfig()->group(QLatin1String("Settings_Worksheet"));
             group.writeEntry(QLatin1String("LaTeXEngine"), ui.cbTexEngine->itemData(index));
         }
     }
     else
         index = ui.cbTexEngine->findData(engine);
 
     ui.cbTexEngine->setCurrentIndex(index);
     checkTeX(index);
 }
 
 void SettingsWorksheetPage::changed() {
     m_changed = true;
     emit settingsChanged();
 }
 
 /*!
  checks whether all tools required for latex typesetting are available. shows a warning if not.
  \sa TeXRenderer::active()
  */
 void SettingsWorksheetPage::checkTeX(int engineIndex) {
     if (engineIndex == -1) {
         ui.lLatexWarning->show();
         ui.lLatexWarning->setToolTip(i18n("No LaTeX installation found or selected. LaTeX typesetting not possible."));
         return;
     }
 
     //engine found, check the presence of other required tools (s.a. TeXRenderer.cpp):
     //to convert the generated PDF/PS files to PNG we need 'convert' from the ImageMagic package
     if (!TeXRenderer::executableExists(QLatin1String("convert"))) {
         ui.lLatexWarning->show();
         ui.lLatexWarning->setToolTip(i18n("No 'convert' found. LaTeX typesetting not possible."));
         return;
     }
 
     QString engine = ui.cbTexEngine->itemData(engineIndex).toString();
     if (engine == "latex") {
         //to convert the generated PS files to DVI we need 'dvips'
         if (!TeXRenderer::executableExists(QLatin1String("dvips"))) {
             ui.lLatexWarning->show();
             ui.lLatexWarning->setToolTip(i18n("No 'dvips' found. LaTeX typesetting not possible."));
             return;
         }
     }
 
 #if defined(_WIN64)
     if (!TeXRenderer::executableExists(QLatin1String("gswin64c"))) {
         ui.lLatexWarning->show();
         ui.lLatexWarning->setToolTip(i18n("No Ghostscript found. LaTeX typesetting not possible."));
         return;
     }
 #elif defined(HAVE_WINDOWS)
     if (!TeXRenderer::executableExists(QLatin1String("gswin32c"))) {
         ui.lLatexWarning->show();
         ui.lLatexWarning->setToolTip(i18n("No Ghostscript found. LaTeX typesetting not possible."));
         return;
     }
 #endif
 
     ui.lLatexWarning->hide();
 }