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     topLayout->setSpacing(KDialog::spacingHint());
  63     topLayout->setMargin(KDialog::marginHint());
  64
  65     // Create group box "Show previews for:"
  66     QGroupBox* listBox = new QGroupBox(i18nc("@title:group", "Show previews for"), this);
  67
  68     m_listView = new QListView(this);
  69
  70     ServiceItemDelegate* delegate = new ServiceItemDelegate(m_listView, m_listView);
  71     connect(delegate, SIGNAL(requestServiceConfiguration(QModelIndex)),
  72             this, SLOT(configureService(QModelIndex)));
  73
  74     ServiceModel* serviceModel = new ServiceModel(this);
  75     QSortFilterProxyModel* proxyModel = new QSortFilterProxyModel(this);
  76     proxyModel->setSourceModel(serviceModel);
  77     proxyModel->setSortRole(Qt::DisplayRole);
  78
  79     m_listView->setModel(proxyModel);
  80     m_listView->setItemDelegate(delegate);
  81     m_listView->setVerticalScrollMode(QListView::ScrollPerPixel);
  82
  83     QVBoxLayout* listBoxLayout = new QVBoxLayout(listBox);
  84     listBoxLayout->setSpacing(KDialog::spacingHint());
  85     listBoxLayout->setMargin(KDialog::marginHint());
  86     listBoxLayout->addWidget(m_listView);
  87
  88     QLabel* remoteFileSizeLabel = new QLabel(i18nc("@label", "Skip previews for remote files above:"), this);
  89
  90     m_remoteFileSizeBox = new KIntSpinBox(this);
  91     m_remoteFileSizeBox->setSingleStep(1);
  92     m_remoteFileSizeBox->setSuffix(QLatin1String(" MB"));
  93     m_remoteFileSizeBox->setRange(0, 9999999); /* MB */
  94
  95     QHBoxLayout* fileSizeBoxLayout = new QHBoxLayout(this);
  96     fileSizeBoxLayout->addWidget(remoteFileSizeLabel, 0, Qt::AlignRight);
  97     fileSizeBoxLayout->addWidget(m_remoteFileSizeBox);
  98
  99     topLayout->addWidget(listBox);
 100     topLayout->addLayout(fileSizeBoxLayout);
 101
 102     loadSettings();
 103
 104     connect(m_listView, SIGNAL(clicked(QModelIndex)), this, SIGNAL(changed()));
 105     connect(m_remoteFileSizeBox, SIGNAL(valueChanged(int)), this, SIGNAL(changed()));
 106 }
 107
 108 PreviewsSettingsPage::~PreviewsSettingsPage()
 109 {
 110 }
 111
 112 void PreviewsSettingsPage::applySettings()
 113 {
 114     const QAbstractItemModel* model = m_listView->model();
 115     const int rowCount = model->rowCount();
 116     if (rowCount > 0) {
 117         m_enabledPreviewPlugins.clear();
 118         for (int i = 0; i < rowCount; ++i) {
 119             const QModelIndex index = model->index(i, 0);
 120             const bool checked = model->data(index, Qt::CheckStateRole).toBool();
 121             if (checked) {
 122                 const QString enabledPlugin = model->data(index, Qt::UserRole).toString();
 123                 m_enabledPreviewPlugins.append(enabledPlugin);
 124             }
 125         }
 126     }
 127
 128     KConfigGroup globalConfig(KGlobal::config(), QLatin1String("PreviewSettings"));
 129     globalConfig.writeEntry("Plugins", m_enabledPreviewPlugins);
 130
 131     const qulonglong maximumRemoteSize = static_cast<qulonglong>(m_remoteFileSizeBox->value()) * 1024 * 1024;
 132     globalConfig.writeEntry("MaximumRemoteSize",
 133                             maximumRemoteSize,
 134                             KConfigBase::Normal | KConfigBase::Global);
 135     globalConfig.sync();
 136 }
 137
 138 void PreviewsSettingsPage::restoreDefaults()
 139 {
 140     m_remoteFileSizeBox->setValue(MaxRemotePreviewSize);
 141 }
 142
 143 void PreviewsSettingsPage::showEvent(QShowEvent* event)
 144 {
 145     if (!event->spontaneous() && !m_initialized) {
 146         loadPreviewPlugins();
 147         m_initialized = true;
 148     }
 149     SettingsPageBase::showEvent(event);
 150 }
 151
 152 void PreviewsSettingsPage::configureService(const QModelIndex& index)
 153 {
 154     const QAbstractItemModel* model = index.model();
 155     const QString pluginName = model->data(index).toString();
 156     const QString desktopEntryName = model->data(index, ServiceModel::DesktopEntryNameRole).toString();
 157
 158     ConfigurePreviewPluginDialog* dialog = new ConfigurePreviewPluginDialog(pluginName, desktopEntryName, this);
 159     dialog->setAttribute(Qt::WA_DeleteOnClose);
 160     dialog->show();
 161 }
 162
 163 void PreviewsSettingsPage::loadPreviewPlugins()
 164 {
 165     QAbstractItemModel* model = m_listView->model();
 166
 167     const KService::List plugins = KServiceTypeTrader::self()->query(QLatin1String("ThumbCreator"));
 168     foreach (const KSharedPtr<KService>& service, plugins) {
 169         const bool configurable = service->property("Configurable", QVariant::Bool).toBool();
 170         const bool show = m_enabledPreviewPlugins.contains(service->desktopEntryName());
 171
 172         model->insertRow(0);
 173         const QModelIndex index = model->index(0, 0);
 174         model->setData(index, show, Qt::CheckStateRole);
 175         model->setData(index, configurable, ServiceModel::ConfigurableRole);
 176         model->setData(index, service->name(), Qt::DisplayRole);
 177         model->setData(index, service->desktopEntryName(), ServiceModel::DesktopEntryNameRole);
 178     }
 179
 180     model->sort(Qt::DisplayRole);
 181 }
 182
 183 void PreviewsSettingsPage::loadSettings()
 184 {
 185     KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
 186     m_enabledPreviewPlugins = globalConfig.readEntry("Plugins", QStringList()
 187                                                      << QLatin1String("directorythumbnail")
 188                                                      << QLatin1String("imagethumbnail")
 189                                                      << QLatin1String("jpegthumbnail"));
 190
 191     // If the user is upgrading from KDE <= 4.6, we must check if he had the 'jpegrotatedthumbnail' plugin enabled.
 192     // This plugin does not exist any more in KDE >= 4.7, so we have to replace it with the 'jpegthumbnail' plugin.
 193     //
 194     // Note that the upgrade to the correct plugin is done already in KFilePreviewGenerator. However, if Konqueror is
 195     // opened in web browsing mode and the Settings dialog is opened, we might end up here before KFilePreviewGenerator's
 196     // constructor is ever called -> the plugin replacement should be done here as well.
 197     if(m_enabledPreviewPlugins.contains(QLatin1String("jpegrotatedthumbnail"))) {
 198         m_enabledPreviewPlugins.removeAll(QLatin1String("jpegrotatedthumbnail"));
 199         m_enabledPreviewPlugins.append(QLatin1String("jpegthumbnail"));
 200         globalConfig.writeEntry("Plugins", m_enabledPreviewPlugins);
 201         globalConfig.sync();
 202     }
 203
 204     const qulonglong defaultRemotePreview = static_cast<qulonglong>(MaxRemotePreviewSize) * 1024 * 1024;
 205     const qulonglong maxRemoteByteSize = globalConfig.readEntry("MaximumRemoteSize", defaultRemotePreview);
 206     const int maxRemoteMByteSize = maxRemoteByteSize / (1024 * 1024);
 207     m_remoteFileSizeBox->setValue(maxRemoteMByteSize);
 208 }
 209
 210 #include "previewssettingspage.moc"