src/settings/previewssettingspage.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
   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 #include "dolphinsettings.h"
  22
  23 #include "dolphin_generalsettings.h"
  24
  25 #include <kconfiggroup.h>
  26 #include <kdialog.h>
  27 #include <kglobal.h>
  28 #include <klocale.h>
  29 #include <KNumInput>
  30 #include <kservicetypetrader.h>
  31 #include <kservice.h>
  32
  33 #include <QCheckBox>
  34 #include <QGroupBox>
  35 #include <QLabel>
  36 #include <QListWidget>
  37 #include <QRadioButton>
  38 #include <QShowEvent>
  39 #include <QSlider>
  40 #include <QGridLayout>
  41
  42 // default settings
  43 namespace {
  44     const bool UseThumbnails = true;
  45     const int MaxLocalPreviewSize = 5;  // 5 MB
  46     const int MaxRemotePreviewSize = 0; // 0 MB
  47 }
  48
  49 PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
  50     SettingsPageBase(parent),
  51     m_initialized(false),
  52     m_previewPluginsList(0),
  53     m_enabledPreviewPlugins(),
  54     m_localFileSizeBox(0),
  55     m_remoteFileSizeBox(0)
  56 {
  57     QVBoxLayout* topLayout = new QVBoxLayout(this);
  58     topLayout->setSpacing(KDialog::spacingHint());
  59     topLayout->setMargin(KDialog::marginHint());
  60
  61     QLabel* listDescription = new QLabel(i18nc("@label", "Show previews for:"), this);
  62
  63     m_previewPluginsList = new QListWidget(this);
  64     m_previewPluginsList->setSortingEnabled(true);
  65     m_previewPluginsList->setSelectionMode(QAbstractItemView::NoSelection);
  66     connect(m_previewPluginsList, SIGNAL(itemClicked(QListWidgetItem*)),
  67             this, SIGNAL(changed()));
  68
  69     QLabel* localFileSizeLabel = new QLabel(i18nc("@label", "Local file size maximum:"), this);
  70
  71     m_localFileSizeBox = new KIntSpinBox(this);
  72     m_localFileSizeBox->setSingleStep(1);
  73     m_localFileSizeBox->setSuffix(QLatin1String(" MB"));
  74     m_localFileSizeBox->setRange(0, 9999); /* MB */
  75     connect(m_localFileSizeBox, SIGNAL(valueChanged(int)),
  76             this, SIGNAL(changed()));
  77
  78     QLabel* remoteFileSizeLabel = new QLabel(i18nc("@label", "Remote file size maximum:"), this);
  79     m_remoteFileSizeBox = new KIntSpinBox(this);
  80     m_remoteFileSizeBox->setSingleStep(1);
  81     m_remoteFileSizeBox->setSuffix(QLatin1String(" MB"));
  82     m_remoteFileSizeBox->setRange(0, 9999); /* MB */
  83     connect(m_remoteFileSizeBox, SIGNAL(valueChanged(int)),
  84             this, SIGNAL(changed()));
  85
  86     QGridLayout* gridLayout = new QGridLayout();
  87     gridLayout->addWidget(localFileSizeLabel, 0, 0);
  88     gridLayout->addWidget(m_localFileSizeBox, 0, 1);
  89     gridLayout->addWidget(remoteFileSizeLabel, 1, 0);
  90     gridLayout->addWidget(m_remoteFileSizeBox, 1, 1);
  91
  92     topLayout->addWidget(listDescription);
  93     topLayout->addWidget(m_previewPluginsList);
  94     topLayout->addLayout(gridLayout);
  95
  96     loadSettings();
  97 }
  98
  99
 100 PreviewsSettingsPage::~PreviewsSettingsPage()
 101 {
 102 }
 103
 104 void PreviewsSettingsPage::applySettings()
 105 {
 106     m_enabledPreviewPlugins.clear();
 107     const int count = m_previewPluginsList->count();
 108     for (int i = 0; i < count; ++i) {
 109         const QListWidgetItem* item = m_previewPluginsList->item(i);
 110         if (item->checkState() == Qt::Checked) {
 111             const QString enabledPlugin = item->data(Qt::UserRole).toString();
 112             m_enabledPreviewPlugins.append(enabledPlugin);
 113         }
 114     }
 115
 116     KConfigGroup globalConfig(KGlobal::config(), QLatin1String("PreviewSettings"));
 117     globalConfig.writeEntry("Plugins", m_enabledPreviewPlugins);
 118
 119     globalConfig.writeEntry("MaximumSize",
 120                             m_localFileSizeBox->value() * 1024 * 1024,
 121                             KConfigBase::Normal | KConfigBase::Global);
 122     globalConfig.writeEntry("RemoteMaximumSize",
 123                             m_remoteFileSizeBox->value() * 1024 * 1024,
 124                             KConfigBase::Normal | KConfigBase::Global);
 125     globalConfig.sync();
 126 }
 127
 128 void PreviewsSettingsPage::restoreDefaults()
 129 {
 130     m_localFileSizeBox->setValue(MaxLocalPreviewSize);
 131     m_remoteFileSizeBox->setValue(MaxRemotePreviewSize);
 132 }
 133
 134 void PreviewsSettingsPage::showEvent(QShowEvent* event)
 135 {
 136     if (!event->spontaneous() && !m_initialized) {
 137         QMetaObject::invokeMethod(this, "loadPreviewPlugins", Qt::QueuedConnection);
 138         m_initialized = true;
 139     }
 140     SettingsPageBase::showEvent(event);
 141 }
 142
 143 void PreviewsSettingsPage::loadPreviewPlugins()
 144 {
 145     const KService::List plugins = KServiceTypeTrader::self()->query(QLatin1String("ThumbCreator"));
 146     foreach (const KSharedPtr<KService>& service, plugins) {
 147         QListWidgetItem* item = new QListWidgetItem(service->name(),
 148                                                     m_previewPluginsList);
 149         item->setData(Qt::UserRole, service->desktopEntryName());
 150         const bool show = m_enabledPreviewPlugins.contains(service->desktopEntryName());
 151         item->setCheckState(show ? Qt::Checked : Qt::Unchecked);
 152     }
 153 }
 154
 155 void PreviewsSettingsPage::loadSettings()
 156 {
 157     KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
 158     m_enabledPreviewPlugins = globalConfig.readEntry("Plugins", QStringList()
 159                                                      << QLatin1String("directorythumbnail")
 160                                                      << QLatin1String("imagethumbnail")
 161                                                      << QLatin1String("jpegthumbnail"));
 162
 163     // TODO: The default value of 5 MB must match with the default value inside
 164     // kdelibs/kio/kio/previewjob.cpp. Maybe a static getter method in PreviewJob
 165     // should be added for getting the default size?
 166     const int maxLocalByteSize = globalConfig.readEntry("MaximumSize", MaxLocalPreviewSize * 1024 * 1024);
 167     const int maxLocalMByteSize = maxLocalByteSize / (1024 * 1024);
 168     m_localFileSizeBox->setValue(maxLocalMByteSize);
 169
 170     const int maxRemoteByteSize = globalConfig.readEntry("MaximumSize", MaxRemotePreviewSize * 1024 * 1024);
 171     const int maxRemoteMByteSize = maxRemoteByteSize / (1024 * 1024);
 172     m_localFileSizeBox->setValue(maxRemoteMByteSize);
 173 }
 174
 175 #include "previewssettingspage.moc"