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 <QLabel>
  39 #include <QListView>
  40 #include <QPainter>
  41 #include <QScrollBar>
  42 #include <QShowEvent>
  43 #include <QSlider>
  44 #include <QSortFilterProxyModel>
  45 #include <QGridLayout>
  46 #include <QVBoxLayout>
  47
  48 // default settings
  49 namespace {
  50     const bool UseThumbnails = true;
  51     const int MaxLocalPreviewSize = 5;  // 5 MB
  52     const int MaxRemotePreviewSize = 0; // 0 MB
  53 }
  54
  55 PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
  56     SettingsPageBase(parent),
  57     m_initialized(false),
  58     m_listView(0),
  59     m_enabledPreviewPlugins(),
  60     m_localFileSizeBox(0),
  61     m_remoteFileSizeBox(0)
  62 {
  63     QVBoxLayout* topLayout = new QVBoxLayout(this);
  64     topLayout->setSpacing(KDialog::spacingHint());
  65     topLayout->setMargin(KDialog::marginHint());
  66
  67     // Create group box "Show previews for:"
  68     QGroupBox* listBox = new QGroupBox(i18nc("@title:group", "Show previews for"), this);
  69
  70     m_listView = new QListView(this);
  71
  72     ServiceItemDelegate* delegate = new ServiceItemDelegate(m_listView, m_listView);
  73     connect(delegate, SIGNAL(requestServiceConfiguration(QModelIndex)),
  74             this, SLOT(configureService(QModelIndex)));
  75
  76     ServiceModel* serviceModel = new ServiceModel(this);
  77     QSortFilterProxyModel* proxyModel = new QSortFilterProxyModel(this);
  78     proxyModel->setSourceModel(serviceModel);
  79     proxyModel->setSortRole(Qt::DisplayRole);
  80
  81     m_listView->setModel(proxyModel);
  82     m_listView->setItemDelegate(delegate);
  83     m_listView->setVerticalScrollMode(QListView::ScrollPerPixel);
  84
  85     QVBoxLayout* listBoxLayout = new QVBoxLayout(listBox);
  86     listBoxLayout->addWidget(m_listView);
  87
  88     // Create group box "Don't create previews for"
  89     QGroupBox* fileSizeBox = new QGroupBox(i18nc("@title:group", "Do not create previews for"), this);
  90
  91     QLabel* localFileSizeLabel = new QLabel(i18nc("@label Don't create previews for: <Local files above:> XX MByte",
  92                                                   "Local files above:"), this);
  93
  94     m_localFileSizeBox = new KIntSpinBox(this);
  95     m_localFileSizeBox->setSingleStep(1);
  96     m_localFileSizeBox->setSuffix(QLatin1String(" MB"));
  97     m_localFileSizeBox->setRange(0, 9999999); /* MB */
  98
  99     QLabel* remoteFileSizeLabel = new QLabel(i18nc("@label Don't create previews for: <Remote files above:> XX MByte",
 100                                                    "Remote files above:"), this);
 101
 102     m_remoteFileSizeBox = new KIntSpinBox(this);
 103     m_remoteFileSizeBox->setSingleStep(1);
 104     m_remoteFileSizeBox->setSuffix(QLatin1String(" MB"));
 105     m_remoteFileSizeBox->setRange(0, 9999999); /* MB */
 106
 107     QGridLayout* fileSizeBoxLayout = new QGridLayout(fileSizeBox);
 108     fileSizeBoxLayout->addWidget(localFileSizeLabel, 0, 0, Qt::AlignRight);
 109     fileSizeBoxLayout->addWidget(m_localFileSizeBox, 0, 1);
 110     fileSizeBoxLayout->addWidget(remoteFileSizeLabel, 1, 0, Qt::AlignRight);
 111     fileSizeBoxLayout->addWidget(m_remoteFileSizeBox, 1, 1);
 112
 113     topLayout->addWidget(listBox);
 114     topLayout->addWidget(fileSizeBox);
 115
 116     loadSettings();
 117
 118     connect(m_listView, SIGNAL(clicked(QModelIndex)), this, SIGNAL(changed()));
 119     connect(m_localFileSizeBox, SIGNAL(valueChanged(int)), this, SIGNAL(changed()));
 120     connect(m_remoteFileSizeBox, SIGNAL(valueChanged(int)), this, SIGNAL(changed()));
 121 }
 122
 123 PreviewsSettingsPage::~PreviewsSettingsPage()
 124 {
 125 }
 126
 127 void PreviewsSettingsPage::applySettings()
 128 {
 129     const QAbstractItemModel* model = m_listView->model();
 130     const int rowCount = model->rowCount();
 131     if (rowCount > 0) {
 132         m_enabledPreviewPlugins.clear();
 133         for (int i = 0; i < rowCount; ++i) {
 134             const QModelIndex index = model->index(i, 0);
 135             const bool checked = model->data(index, Qt::CheckStateRole).toBool();
 136             if (checked) {
 137                 const QString enabledPlugin = model->data(index, Qt::UserRole).toString();
 138                 m_enabledPreviewPlugins.append(enabledPlugin);
 139             }
 140         }
 141     }
 142
 143     KConfigGroup globalConfig(KGlobal::config(), QLatin1String("PreviewSettings"));
 144     globalConfig.writeEntry("Plugins", m_enabledPreviewPlugins);
 145
 146     const qulonglong maximumLocalSize = static_cast<qulonglong>(m_localFileSizeBox->value()) * 1024 * 1024;
 147     globalConfig.writeEntry("MaximumSize",
 148                             maximumLocalSize,
 149                             KConfigBase::Normal | KConfigBase::Global);
 150     const qulonglong maximumRemoteSize = static_cast<qulonglong>(m_remoteFileSizeBox->value()) * 1024 * 1024;
 151     globalConfig.writeEntry("MaximumRemoteSize",
 152                             maximumRemoteSize,
 153                             KConfigBase::Normal | KConfigBase::Global);
 154     globalConfig.sync();
 155 }
 156
 157 void PreviewsSettingsPage::restoreDefaults()
 158 {
 159     m_localFileSizeBox->setValue(MaxLocalPreviewSize);
 160     m_remoteFileSizeBox->setValue(MaxRemotePreviewSize);
 161 }
 162
 163 void PreviewsSettingsPage::showEvent(QShowEvent* event)
 164 {
 165     if (!event->spontaneous() && !m_initialized) {
 166         loadPreviewPlugins();
 167         m_initialized = true;
 168     }
 169     SettingsPageBase::showEvent(event);
 170 }
 171
 172 void PreviewsSettingsPage::configureService(const QModelIndex& index)
 173 {
 174     const QAbstractItemModel* model = index.model();
 175     const QString pluginName = model->data(index).toString();
 176     const QString desktopEntryName = model->data(index, ServiceModel::DesktopEntryNameRole).toString();
 177
 178     ConfigurePreviewPluginDialog* dialog = new ConfigurePreviewPluginDialog(pluginName, desktopEntryName, this);
 179     dialog->setAttribute(Qt::WA_DeleteOnClose);
 180     dialog->show();
 181 }
 182
 183 void PreviewsSettingsPage::loadPreviewPlugins()
 184 {
 185     QAbstractItemModel* model = m_listView->model();
 186
 187     const KService::List plugins = KServiceTypeTrader::self()->query(QLatin1String("ThumbCreator"));
 188     foreach (const KSharedPtr<KService>& service, plugins) {
 189         const bool configurable = service->property("Configurable", QVariant::Bool).toBool();
 190         const bool show = m_enabledPreviewPlugins.contains(service->desktopEntryName());
 191
 192         model->insertRow(0);
 193         const QModelIndex index = model->index(0, 0);
 194         model->setData(index, show, Qt::CheckStateRole);
 195         model->setData(index, configurable, ServiceModel::ConfigurableRole);
 196         model->setData(index, service->name(), Qt::DisplayRole);
 197         model->setData(index, service->desktopEntryName(), ServiceModel::DesktopEntryNameRole);
 198     }
 199
 200     model->sort(Qt::DisplayRole);
 201 }
 202
 203 void PreviewsSettingsPage::loadSettings()
 204 {
 205     KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
 206     m_enabledPreviewPlugins = globalConfig.readEntry("Plugins", QStringList()
 207                                                      << QLatin1String("directorythumbnail")
 208                                                      << QLatin1String("imagethumbnail")
 209                                                      << QLatin1String("jpegthumbnail"));
 210
 211     // If the user is upgrading from KDE <= 4.6, we must check if he had the 'jpegrotatedthumbnail' plugin enabled.
 212     // This plugin does not exist any more in KDE >= 4.7, so we have to replace it with the 'jpegthumbnail' plugin.
 213     //
 214     // Note that the upgrade to the correct plugin is done already in KFilePreviewGenerator. However, if Konqueror is
 215     // opened in web browsing mode and the Settings dialog is opened, we might end up here before KFilePreviewGenerator's
 216     // constructor is ever called -> the plugin replacement should be done here as well.
 217     if(m_enabledPreviewPlugins.contains(QLatin1String("jpegrotatedthumbnail"))) {
 218         m_enabledPreviewPlugins.removeAll(QLatin1String("jpegrotatedthumbnail"));
 219         m_enabledPreviewPlugins.append(QLatin1String("jpegthumbnail"));
 220         globalConfig.writeEntry("Plugins", m_enabledPreviewPlugins);
 221         globalConfig.sync();
 222     }
 223
 224     const qulonglong defaultLocalPreview = static_cast<qulonglong>(MaxLocalPreviewSize) * 1024 * 1024;
 225     const qulonglong maxLocalByteSize = globalConfig.readEntry("MaximumSize", defaultLocalPreview);
 226     const int maxLocalMByteSize = maxLocalByteSize / (1024 * 1024);
 227     m_localFileSizeBox->setValue(maxLocalMByteSize);
 228
 229     const qulonglong defaultRemotePreview = static_cast<qulonglong>(MaxRemotePreviewSize) * 1024 * 1024;
 230     const qulonglong maxRemoteByteSize = globalConfig.readEntry("MaximumRemoteSize", defaultRemotePreview);
 231     const int maxRemoteMByteSize = maxRemoteByteSize / (1024 * 1024);
 232     m_remoteFileSizeBox->setValue(maxRemoteMByteSize);
 233 }
 234
 235 #include "previewssettingspage.moc"