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 <KGlobal>
  27 #include <KLocalizedString>
  28 #include <KServiceTypeTrader>
  29 #include <KService>
  30
  31 #include <settings/serviceitemdelegate.h>
  32 #include <settings/servicemodel.h>
  33
  34 #include <QCheckBox>
  35 #include <QGroupBox>
  36 #include <QHBoxLayout>
  37 #include <QLabel>
  38 #include <QListView>
  39 #include <QPainter>
  40 #include <QScrollBar>
  41 #include <QShowEvent>
  42 #include <QSlider>
  43 #include <QSpinBox>
  44 #include <QSortFilterProxyModel>
  45 #include <QVBoxLayout>
  46
  47 // default settings
  48 namespace {
  49     const bool UseThumbnails = true;
  50     const int MaxRemotePreviewSize = 0; // 0 MB
  51 }
  52
  53 PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
  54     SettingsPageBase(parent),
  55     m_initialized(false),
  56     m_listView(0),
  57     m_enabledPreviewPlugins(),
  58     m_remoteFileSizeBox(0)
  59 {
  60     QVBoxLayout* topLayout = new QVBoxLayout(this);
  61
  62     QLabel* showPreviewsLabel = new QLabel(i18nc("@title:group", "Show previews for:"), this);
  63
  64     m_listView = new QListView(this);
  65
  66     ServiceItemDelegate* delegate = new ServiceItemDelegate(m_listView, m_listView);
  67     connect(delegate, &ServiceItemDelegate::requestServiceConfiguration,
  68             this, &PreviewsSettingsPage::configureService);
  69
  70     ServiceModel* serviceModel = new ServiceModel(this);
  71     QSortFilterProxyModel* proxyModel = new QSortFilterProxyModel(this);
  72     proxyModel->setSourceModel(serviceModel);
  73     proxyModel->setSortRole(Qt::DisplayRole);
  74
  75     m_listView->setModel(proxyModel);
  76     m_listView->setItemDelegate(delegate);
  77     m_listView->setVerticalScrollMode(QListView::ScrollPerPixel);
  78
  79     QLabel* remoteFileSizeLabel = new QLabel(i18nc("@label", "Skip previews for remote files above:"), this);
  80
  81     m_remoteFileSizeBox = new QSpinBox(this);
  82     m_remoteFileSizeBox->setSingleStep(1);
  83     m_remoteFileSizeBox->setSuffix(QLatin1String(" MB"));
  84     m_remoteFileSizeBox->setRange(0, 9999999); /* MB */
  85
  86     QHBoxLayout* fileSizeBoxLayout = new QHBoxLayout(this);
  87     fileSizeBoxLayout->addWidget(remoteFileSizeLabel, 0, Qt::AlignRight);
  88     fileSizeBoxLayout->addWidget(m_remoteFileSizeBox);
  89
  90     topLayout->addWidget(showPreviewsLabel);
  91     topLayout->addWidget(m_listView);
  92     topLayout->addLayout(fileSizeBoxLayout);
  93
  94     loadSettings();
  95
  96     connect(m_listView, &QListView::clicked, this, &PreviewsSettingsPage::changed);
  97     connect(m_remoteFileSizeBox, static_cast<void(QSpinBox::*)(int)>(&QSpinBox::valueChanged), this, &PreviewsSettingsPage::changed);
  98 }
  99
 100 PreviewsSettingsPage::~PreviewsSettingsPage()
 101 {
 102 }
 103
 104 void PreviewsSettingsPage::applySettings()
 105 {
 106     const QAbstractItemModel* model = m_listView->model();
 107     const int rowCount = model->rowCount();
 108     if (rowCount > 0) {
 109         m_enabledPreviewPlugins.clear();
 110         for (int i = 0; i < rowCount; ++i) {
 111             const QModelIndex index = model->index(i, 0);
 112             const bool checked = model->data(index, Qt::CheckStateRole).toBool();
 113             if (checked) {
 114                 const QString enabledPlugin = model->data(index, Qt::UserRole).toString();
 115                 m_enabledPreviewPlugins.append(enabledPlugin);
 116             }
 117         }
 118     }
 119
 120     KConfigGroup globalConfig(KSharedConfig::openConfig(), QLatin1String("PreviewSettings"));
 121     globalConfig.writeEntry("Plugins", m_enabledPreviewPlugins);
 122
 123     const qulonglong maximumRemoteSize = static_cast<qulonglong>(m_remoteFileSizeBox->value()) * 1024 * 1024;
 124     globalConfig.writeEntry("MaximumRemoteSize",
 125                             maximumRemoteSize,
 126                             KConfigBase::Normal | KConfigBase::Global);
 127     globalConfig.sync();
 128 }
 129
 130 void PreviewsSettingsPage::restoreDefaults()
 131 {
 132     m_remoteFileSizeBox->setValue(MaxRemotePreviewSize);
 133 }
 134
 135 void PreviewsSettingsPage::showEvent(QShowEvent* event)
 136 {
 137     if (!event->spontaneous() && !m_initialized) {
 138         loadPreviewPlugins();
 139         m_initialized = true;
 140     }
 141     SettingsPageBase::showEvent(event);
 142 }
 143
 144 void PreviewsSettingsPage::configureService(const QModelIndex& index)
 145 {
 146     const QAbstractItemModel* model = index.model();
 147     const QString pluginName = model->data(index).toString();
 148     const QString desktopEntryName = model->data(index, ServiceModel::DesktopEntryNameRole).toString();
 149
 150     ConfigurePreviewPluginDialog* dialog = new ConfigurePreviewPluginDialog(pluginName, desktopEntryName, this);
 151     dialog->setAttribute(Qt::WA_DeleteOnClose);
 152     dialog->show();
 153 }
 154
 155 void PreviewsSettingsPage::loadPreviewPlugins()
 156 {
 157     QAbstractItemModel* model = m_listView->model();
 158
 159     const KService::List plugins = KServiceTypeTrader::self()->query(QLatin1String("ThumbCreator"));
 160     foreach (const KService::Ptr& service, plugins) {
 161         const bool configurable = service->property("Configurable", QVariant::Bool).toBool();
 162         const bool show = m_enabledPreviewPlugins.contains(service->desktopEntryName());
 163
 164         model->insertRow(0);
 165         const QModelIndex index = model->index(0, 0);
 166         model->setData(index, show, Qt::CheckStateRole);
 167         model->setData(index, configurable, ServiceModel::ConfigurableRole);
 168         model->setData(index, service->name(), Qt::DisplayRole);
 169         model->setData(index, service->desktopEntryName(), ServiceModel::DesktopEntryNameRole);
 170     }
 171
 172     model->sort(Qt::DisplayRole);
 173 }
 174
 175 void PreviewsSettingsPage::loadSettings()
 176 {
 177     KConfigGroup globalConfig(KSharedConfig::openConfig(), "PreviewSettings");
 178     m_enabledPreviewPlugins = globalConfig.readEntry("Plugins", QStringList()
 179                                                      << QLatin1String("directorythumbnail")
 180                                                      << QLatin1String("imagethumbnail")
 181                                                      << QLatin1String("jpegthumbnail"));
 182
 183     const qulonglong defaultRemotePreview = static_cast<qulonglong>(MaxRemotePreviewSize) * 1024 * 1024;
 184     const qulonglong maxRemoteByteSize = globalConfig.readEntry("MaximumRemoteSize", defaultRemotePreview);
 185     const int maxRemoteMByteSize = maxRemoteByteSize / (1024 * 1024);
 186     m_remoteFileSizeBox->setValue(maxRemoteMByteSize);
 187 }
 188