src/settings/general/previewssettingspage.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "previewssettingspage.h"
  21
  22 #include "dolphin_generalsettings.h"
  23 #include "configurepreviewplugindialog.h"
  24
  25 #include <KConfigGroup>
  26 #include <KDialog>
  27 #include <KGlobal>
  28 #include <KLocale>
  29 #include <KNumInput>
  30 #include <KServiceTypeTrader>
  31 #include <KService>
  32
  33 #include <settings/serviceitemdelegate.h>
  34 #include <settings/servicemodel.h>
  35
  36 #include <QCheckBox>
  37 #include <QGroupBox>
  38 #include <QHBoxLayout>
  39 #include <QLabel>
  40 #include <QListView>
  41 #include <QPainter>
  42 #include <QScrollBar>
  43 #include <QShowEvent>
  44 #include <QSlider>
  45 #include <QSortFilterProxyModel>
  46 #include <QVBoxLayout>
  47
  48 // default settings
  49 namespace {
  50     const bool UseThumbnails = true;
  51     const int MaxRemotePreviewSize = 0; // 0 MB
  52 }
  53
  54 PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
  55     SettingsPageBase(parent),
  56     m_initialized(false),
  57     m_listView(0),
  58     m_enabledPreviewPlugins(),
  59     m_remoteFileSizeBox(0)
  60 {
  61     QVBoxLayout* topLayout = new QVBoxLayout(this);
  62
  63     QLabel* showPreviewsLabel = new QLabel(i18nc("@title:group", "Show previews for:"), this);
  64
  65     m_listView = new QListView(this);
  66
  67     ServiceItemDelegate* delegate = new ServiceItemDelegate(m_listView, m_listView);
  68     connect(delegate, &ServiceItemDelegate::requestServiceConfiguration,
  69             this, &PreviewsSettingsPage::configureService);
  70
  71     ServiceModel* serviceModel = new ServiceModel(this);
  72     QSortFilterProxyModel* proxyModel = new QSortFilterProxyModel(this);
  73     proxyModel->setSourceModel(serviceModel);
  74     proxyModel->setSortRole(Qt::DisplayRole);
  75
  76     m_listView->setModel(proxyModel);
  77     m_listView->setItemDelegate(delegate);
  78     m_listView->setVerticalScrollMode(QListView::ScrollPerPixel);
  79
  80     QLabel* remoteFileSizeLabel = new QLabel(i18nc("@label", "Skip previews for remote files above:"), this);
  81
  82     m_remoteFileSizeBox = new KIntSpinBox(this);
  83     m_remoteFileSizeBox->setSingleStep(1);
  84     m_remoteFileSizeBox->setSuffix(QLatin1String(" MB"));
  85     m_remoteFileSizeBox->setRange(0, 9999999); /* MB */
  86
  87     QHBoxLayout* fileSizeBoxLayout = new QHBoxLayout(this);
  88     fileSizeBoxLayout->addWidget(remoteFileSizeLabel, 0, Qt::AlignRight);
  89     fileSizeBoxLayout->addWidget(m_remoteFileSizeBox);
  90
  91     topLayout->addSpacing(KDialog::spacingHint());
  92     topLayout->addWidget(showPreviewsLabel);
  93     topLayout->addWidget(m_listView);
  94     topLayout->addLayout(fileSizeBoxLayout);
  95
  96     loadSettings();
  97
  98     connect(m_listView, &QListView::clicked, this, &PreviewsSettingsPage::changed);
  99     connect(m_remoteFileSizeBox, static_cast<void(KIntSpinBox::*)(int)>(&KIntSpinBox::valueChanged), this, &PreviewsSettingsPage::changed);
 100 }
 101
 102 PreviewsSettingsPage::~PreviewsSettingsPage()
 103 {
 104 }
 105
 106 void PreviewsSettingsPage::applySettings()
 107 {
 108     const QAbstractItemModel* model = m_listView->model();
 109     const int rowCount = model->rowCount();
 110     if (rowCount > 0) {
 111         m_enabledPreviewPlugins.clear();
 112         for (int i = 0; i < rowCount; ++i) {
 113             const QModelIndex index = model->index(i, 0);
 114             const bool checked = model->data(index, Qt::CheckStateRole).toBool();
 115             if (checked) {
 116                 const QString enabledPlugin = model->data(index, Qt::UserRole).toString();
 117                 m_enabledPreviewPlugins.append(enabledPlugin);
 118             }
 119         }
 120     }
 121
 122     KConfigGroup globalConfig(KGlobal::config(), QLatin1String("PreviewSettings"));
 123     globalConfig.writeEntry("Plugins", m_enabledPreviewPlugins);
 124
 125     const qulonglong maximumRemoteSize = static_cast<qulonglong>(m_remoteFileSizeBox->value()) * 1024 * 1024;
 126     globalConfig.writeEntry("MaximumRemoteSize",
 127                             maximumRemoteSize,
 128                             KConfigBase::Normal | KConfigBase::Global);
 129     globalConfig.sync();
 130 }
 131
 132 void PreviewsSettingsPage::restoreDefaults()
 133 {
 134     m_remoteFileSizeBox->setValue(MaxRemotePreviewSize);
 135 }
 136
 137 void PreviewsSettingsPage::showEvent(QShowEvent* event)
 138 {
 139     if (!event->spontaneous() && !m_initialized) {
 140         loadPreviewPlugins();
 141         m_initialized = true;
 142     }
 143     SettingsPageBase::showEvent(event);
 144 }
 145
 146 void PreviewsSettingsPage::configureService(const QModelIndex& index)
 147 {
 148     const QAbstractItemModel* model = index.model();
 149     const QString pluginName = model->data(index).toString();
 150     const QString desktopEntryName = model->data(index, ServiceModel::DesktopEntryNameRole).toString();
 151
 152     ConfigurePreviewPluginDialog* dialog = new ConfigurePreviewPluginDialog(pluginName, desktopEntryName, this);
 153     dialog->setAttribute(Qt::WA_DeleteOnClose);
 154     dialog->show();
 155 }
 156
 157 void PreviewsSettingsPage::loadPreviewPlugins()
 158 {
 159     QAbstractItemModel* model = m_listView->model();
 160
 161     const KService::List plugins = KServiceTypeTrader::self()->query(QLatin1String("ThumbCreator"));
 162     foreach (const KService::Ptr& service, plugins) {
 163         const bool configurable = service->property("Configurable", QVariant::Bool).toBool();
 164         const bool show = m_enabledPreviewPlugins.contains(service->desktopEntryName());
 165
 166         model->insertRow(0);
 167         const QModelIndex index = model->index(0, 0);
 168         model->setData(index, show, Qt::CheckStateRole);
 169         model->setData(index, configurable, ServiceModel::ConfigurableRole);
 170         model->setData(index, service->name(), Qt::DisplayRole);
 171         model->setData(index, service->desktopEntryName(), ServiceModel::DesktopEntryNameRole);
 172     }
 173
 174     model->sort(Qt::DisplayRole);
 175 }
 176
 177 void PreviewsSettingsPage::loadSettings()
 178 {
 179     KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
 180     m_enabledPreviewPlugins = globalConfig.readEntry("Plugins", QStringList()
 181                                                      << QLatin1String("directorythumbnail")
 182                                                      << QLatin1String("imagethumbnail")
 183                                                      << QLatin1String("jpegthumbnail"));
 184
 185     // If the user is upgrading from KDE <= 4.6, we must check if he had the 'jpegrotatedthumbnail' plugin enabled.
 186     // This plugin does not exist any more in KDE >= 4.7, so we have to replace it with the 'jpegthumbnail' plugin.
 187     //
 188     // Note that the upgrade to the correct plugin is done already in KFilePreviewGenerator. However, if Konqueror is
 189     // opened in web browsing mode and the Settings dialog is opened, we might end up here before KFilePreviewGenerator's
 190     // constructor is ever called -> the plugin replacement should be done here as well.
 191     if (m_enabledPreviewPlugins.contains(QLatin1String("jpegrotatedthumbnail"))) {
 192         m_enabledPreviewPlugins.removeAll(QLatin1String("jpegrotatedthumbnail"));
 193         m_enabledPreviewPlugins.append(QLatin1String("jpegthumbnail"));
 194         globalConfig.writeEntry("Plugins", m_enabledPreviewPlugins);
 195         globalConfig.sync();
 196     }
 197
 198     const qulonglong defaultRemotePreview = static_cast<qulonglong>(MaxRemotePreviewSize) * 1024 * 1024;
 199     const qulonglong maxRemoteByteSize = globalConfig.readEntry("MaximumRemoteSize", defaultRemotePreview);
 200     const int maxRemoteMByteSize = maxRemoteByteSize / (1024 * 1024);
 201     m_remoteFileSizeBox->setValue(maxRemoteMByteSize);
 202 }
 203