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