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 <QCheckBox>
  26 #include <QGroupBox>
  27 #include <QLabel>
  28 #include <QRadioButton>
  29 #include <QSlider>
  30 #include <QSpinBox>
  31 #include <QBoxLayout>
  32
  33 #include <kconfiggroup.h>
  34 #include <kdialog.h>
  35 #include <kglobal.h>
  36 #include <klocale.h>
  37 #include <khbox.h>
  38 #include <kvbox.h>
  39
  40 PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
  41     SettingsPageBase(parent),
  42     m_maxPreviewSize(0),
  43     m_spinBox(0),
  44     m_useFileThumbnails(0)
  45 {
  46     KVBox* vBox = new KVBox(this);
  47     vBox->setSpacing(KDialog::spacingHint());
  48     vBox->setMargin(KDialog::marginHint());
  49
  50     new QLabel("TODO: a major rewrite of this dialog will be done in 4.3", vBox);
  51
  52     KHBox* hBox = new KHBox(vBox);
  53     hBox->setSpacing(KDialog::spacingHint());
  54
  55     new QLabel(i18nc("@label:slider", "Maximum file size:"), hBox);
  56     m_maxPreviewSize = new QSlider(Qt::Horizontal, hBox);
  57     m_maxPreviewSize->setPageStep(10);
  58     m_maxPreviewSize->setSingleStep(1);
  59     m_maxPreviewSize->setTickPosition(QSlider::TicksBelow);
  60
  61     m_spinBox = new QSpinBox(hBox);
  62     m_spinBox->setSingleStep(1);
  63     m_spinBox->setSuffix(" MB");
  64
  65     connect(m_maxPreviewSize, SIGNAL(valueChanged(int)),
  66             m_spinBox, SLOT(setValue(int)));
  67     connect(m_spinBox, SIGNAL(valueChanged(int)),
  68             m_maxPreviewSize, SLOT(setValue(int)));
  69
  70     connect(m_maxPreviewSize, SIGNAL(valueChanged(int)),
  71             this, SIGNAL(changed()));
  72     connect(m_spinBox, SIGNAL(valueChanged(int)),
  73             this, SIGNAL(changed()));
  74
  75     m_useFileThumbnails = new QCheckBox(i18nc("@option:check", "Use thumbnails embedded in files"), vBox);
  76     connect(m_useFileThumbnails, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
  77
  78     // Add a dummy widget with no restriction regarding
  79     // a vertical resizing. This assures that the dialog layout
  80     // is not stretched vertically.
  81     new QWidget(vBox);
  82
  83     loadSettings();
  84 }
  85
  86
  87 PreviewsSettingsPage::~PreviewsSettingsPage()
  88 {
  89 }
  90
  91 void PreviewsSettingsPage::applySettings()
  92 {
  93     KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
  94     const int byteCount = m_maxPreviewSize->value() * 1024 * 1024; // value() returns size in MB
  95     globalConfig.writeEntry("MaximumSize",
  96                             byteCount,
  97                             KConfigBase::Normal | KConfigBase::Global);
  98     globalConfig.writeEntry("UseFileThumbnails",
  99                             m_useFileThumbnails->isChecked(),
 100                             KConfigBase::Normal | KConfigBase::Global);
 101     globalConfig.sync();
 102 }
 103
 104 void PreviewsSettingsPage::restoreDefaults()
 105 {
 106     GeneralSettings* settings = DolphinSettings::instance().generalSettings();
 107     settings->useDefaults(true);
 108     loadSettings();
 109     settings->useDefaults(false);
 110 }
 111
 112 void PreviewsSettingsPage::loadSettings()
 113 {
 114     const int min = 1;   // MB
 115     const int max = 100; // MB
 116     m_maxPreviewSize->setRange(min, max);
 117
 118     KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
 119     // TODO: The default value of 5 MB must match with the default value inside
 120     // kdelibs/kio/kio/previewjob.cpp. Maybe a static getter method in PreviewJob
 121     // should be added for getting the default size?
 122     const int maxByteSize = globalConfig.readEntry("MaximumSize", 5 * 1024 * 1024 /* 5 MB */);
 123     int maxMByteSize = maxByteSize / (1024 * 1024);
 124     if (maxMByteSize < 1) {
 125         maxMByteSize = 1;
 126     } else if (maxMByteSize > max) {
 127         maxMByteSize = max;
 128     }
 129     m_spinBox->setRange(min, max);
 130
 131     m_maxPreviewSize->setValue(maxMByteSize);
 132     m_spinBox->setValue(m_maxPreviewSize->value());
 133
 134     const bool useFileThumbnails = globalConfig.readEntry("UseFileThumbnails", true);
 135     m_useFileThumbnails->setChecked(useFileThumbnails);
 136 }
 137
 138 #include "previewssettingspage.moc"