src/infosidebarpage.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 <config-kmetadata.h>
  21
  22 #include "infosidebarpage.h"
  23
  24 #include <QLayout>
  25 #include <QPixmap>
  26 #include <QLabel>
  27 #include <QTimer>
  28 #include <QPushButton>
  29 #include <QMenu>
  30 #include <QPainter>
  31 #include <QFontMetrics>
  32 #include <QEvent>
  33 #include <QInputDialog>
  34 #include <QDir>
  35
  36 #include <kfileplacesmodel.h>
  37 #include <klocale.h>
  38 #include <kstandarddirs.h>
  39 #include <kio/previewjob.h>
  40 #include <kfileitem.h>
  41 #include <kdialog.h>
  42 #include <kglobalsettings.h>
  43 #include <kfilemetainfo.h>
  44 #include <kvbox.h>
  45 #include <kseparator.h>
  46 #include <kiconloader.h>
  47
  48 #include "pixmapviewer.h"
  49 #include "dolphinsettings.h"
  50 #include "metadatawidget.h"
  51
  52 InfoSidebarPage::InfoSidebarPage(QWidget* parent) :
  53     SidebarPage(parent),
  54     m_multipleSelection(false), //TODO: check if I'm needed
  55     m_pendingPreview(false),
  56     m_timer(0),
  57     m_currentSelection(KFileItemList()),
  58     m_preview(0),
  59     m_name(0),
  60     m_infos(0),
  61     m_metadataWidget(0)
  62 {
  63     const int spacing = KDialog::spacingHint();
  64
  65     m_timer = new QTimer(this);
  66     connect(m_timer, SIGNAL(timeout()),
  67             this, SLOT(slotTimeout()));
  68
  69     QVBoxLayout* layout = new QVBoxLayout;
  70     layout->setSpacing(spacing);
  71
  72     // preview
  73     m_preview = new PixmapViewer(this);
  74     m_preview->setMinimumWidth(K3Icon::SizeEnormous);
  75     m_preview->setFixedHeight(K3Icon::SizeEnormous);
  76
  77     // name
  78     m_name = new QLabel(this);
  79     m_name->setTextFormat(Qt::RichText);
  80     m_name->setAlignment(m_name->alignment() | Qt::AlignHCenter);
  81     QFontMetrics fontMetrics(m_name->font());
  82     m_name->setMinimumHeight(fontMetrics.height() * 3);
  83     m_name->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Maximum);
  84
  85     KSeparator* sep1 = new KSeparator(this);
  86
  87     // general information
  88     m_infos = new QLabel(this);
  89     m_infos->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
  90     m_infos->setTextFormat(Qt::RichText);
  91
  92     KSeparator* sep2 = new KSeparator(this);
  93
  94     if (MetaDataWidget::metaDataAvailable()) {
  95         m_metadataWidget = new MetaDataWidget(this);
  96     }
  97
  98     layout->addItem(new QSpacerItem(spacing, spacing, QSizePolicy::Preferred, QSizePolicy::Fixed));
  99     layout->addWidget(m_preview);
 100     layout->addWidget(m_name);
 101     layout->addWidget(sep1);
 102     layout->addWidget(m_infos);
 103     layout->addWidget(sep2);
 104     if (m_metadataWidget) {
 105         layout->addWidget(m_metadataWidget);
 106         layout->addWidget(new KSeparator(this));
 107     }
 108     // ensure that widgets in the information side bar are aligned towards the top
 109     layout->addStretch(1);
 110     setLayout(layout);
 111 }
 112
 113 InfoSidebarPage::~InfoSidebarPage()
 114 {}
 115
 116 void InfoSidebarPage::setUrl(const KUrl& url)
 117 {
 118     if (!m_shownUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 119         cancelRequest();
 120         m_shownUrl = url;
 121         showItemInfo();
 122     }
 123 }
 124
 125 void InfoSidebarPage::setSelection(const KFileItemList& selection)
 126 {
 127     // TODO: deactivated the following code, as it has side effects. To
 128     // reproduce start Dolphin and open a folder -> the URL navigator gets
 129     // reset. First guess: it seems that a setUrl signal is emitted
 130     // by the following code
 131
 132     Q_UNUSED(selection);
 133     /*cancelRequest();
 134     m_currentSelection = selection;
 135     m_multipleSelection = (m_currentSelection.size() > 1);
 136     showItemInfo();*/
 137 }
 138
 139 void InfoSidebarPage::requestDelayedItemInfo(const KUrl& url)
 140 {
 141     cancelRequest();
 142
 143     if (!url.isEmpty() && !m_multipleSelection) {
 144         m_urlCandidate = url;
 145         m_timer->setSingleShot(true);
 146         m_timer->start(300);
 147     }
 148 }
 149
 150 void InfoSidebarPage::showItemInfo()
 151 {
 152     cancelRequest();
 153
 154     KFileItemList selectedItems = m_currentSelection;
 155     KUrl file;
 156     if (selectedItems.count() == 0) {
 157         file = m_shownUrl;
 158     } else {
 159         file = selectedItems[0]->url();
 160     }
 161     if (m_multipleSelection) {
 162         KIconLoader iconLoader;
 163         QPixmap icon = iconLoader.loadIcon("exec",
 164                                            K3Icon::NoGroup,
 165                                            K3Icon::SizeEnormous);
 166         m_preview->setPixmap(icon);
 167         m_name->setText(i18n("%1 items selected", selectedItems.count()));
 168     } else if (!applyBookmark(file)) {
 169         // try to get a preview pixmap from the item...
 170         KUrl::List list;
 171         list.append(file);
 172
 173         m_pendingPreview = true;
 174         m_preview->setPixmap(QPixmap());
 175
 176         KIO::PreviewJob* job = KIO::filePreview(list,
 177                                                 m_preview->width(),
 178                                                 K3Icon::SizeEnormous,
 179                                                 0,
 180                                                 0,
 181                                                 true,
 182                                                 false);
 183         job->setIgnoreMaximumSize(true);
 184
 185         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 186                 this, SLOT(gotPreview(const KFileItem&, const QPixmap&)));
 187         connect(job, SIGNAL(failed(const KFileItem&)),
 188                 this, SLOT(slotPreviewFailed(const KFileItem&)));
 189
 190         QString text("<b>");
 191         text.append(file.fileName());
 192         text.append("</b>");
 193         m_name->setText(text);
 194     }
 195
 196     createMetaInfo();
 197 }
 198
 199 void InfoSidebarPage::slotTimeout()
 200 {
 201     m_shownUrl = m_urlCandidate;
 202     showItemInfo();
 203 }
 204
 205 void InfoSidebarPage::slotPreviewFailed(const KFileItem& item)
 206 {
 207     m_pendingPreview = false;
 208     if (!applyBookmark(item.url())) {
 209         m_preview->setPixmap(item.pixmap(K3Icon::SizeEnormous));
 210     }
 211 }
 212
 213 void InfoSidebarPage::gotPreview(const KFileItem& item,
 214                                  const QPixmap& pixmap)
 215 {
 216     Q_UNUSED(item);
 217     if (m_pendingPreview) {
 218         m_preview->setPixmap(pixmap);
 219         m_pendingPreview = false;
 220     }
 221 }
 222
 223 bool InfoSidebarPage::applyBookmark(const KUrl& url)
 224 {
 225     KFilePlacesModel *placesModel = DolphinSettings::instance().placesModel();
 226     int count = placesModel->rowCount();
 227
 228     for (int i = 0; i < count; ++i) {
 229         QModelIndex index = placesModel->index(i, 0);
 230
 231         if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
 232             QString text("<b>");
 233             text.append(placesModel->text(index));
 234             text.append("</b>");
 235             m_name->setText(text);
 236
 237             m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
 238             return true;
 239         }
 240     }
 241
 242     return false;
 243 }
 244
 245 void InfoSidebarPage::cancelRequest()
 246 {
 247     m_timer->stop();
 248     m_pendingPreview = false;
 249 }
 250
 251 void InfoSidebarPage::createMetaInfo()
 252 {
 253     beginInfoLines();
 254     if (m_currentSelection.size() == 0) {
 255         KFileItem fileItem(S_IFDIR, KFileItem::Unknown, m_shownUrl);
 256         fileItem.refresh();
 257
 258         if (fileItem.isDir()) {
 259             addInfoLine(i18n("Type:"), i18n("Directory"));
 260         }
 261         if (MetaDataWidget::metaDataAvailable())
 262             m_metadataWidget->setFile(fileItem.url());
 263     } else if (m_currentSelection.count() == 1) {
 264         KFileItem* fileItem = m_currentSelection.at(0);
 265         addInfoLine(i18n("Type:"), fileItem->mimeComment());
 266
 267         QString sizeText(KIO::convertSize(fileItem->size()));
 268         addInfoLine(i18n("Size:"), sizeText);
 269         addInfoLine(i18n("Modified:"), fileItem->timeString());
 270
 271         const KFileMetaInfo& metaInfo = fileItem->metaInfo();
 272         if (metaInfo.isValid()) {
 273             QStringList keys = metaInfo.supportedKeys();
 274             for (QStringList::Iterator it = keys.begin(); it != keys.end(); ++it) {
 275                 if (showMetaInfo(*it)) {
 276                     KFileMetaInfoItem metaInfoItem = metaInfo.item(*it);
 277                     addInfoLine(*it, metaInfoItem.value().toString());
 278                 }
 279             }
 280         }
 281         if (MetaDataWidget::metaDataAvailable())
 282             m_metadataWidget->setFile(fileItem->url());
 283     } else {
 284         if (MetaDataWidget::metaDataAvailable())
 285             m_metadataWidget->setFiles(m_currentSelection.urlList());
 286         unsigned long int totSize = 0;
 287         foreach(KFileItem* item, m_currentSelection) {
 288             totSize += item->size(); //FIXME what to do with directories ? (same with the one-item-selected-code), item->size() does not return the size of the content : not very instinctive for users
 289         }
 290         addInfoLine(i18n("Total size:"), KIO::convertSize(totSize));
 291     }
 292     endInfoLines();
 293 }
 294
 295 void InfoSidebarPage::beginInfoLines()
 296 {
 297     m_infoLines = QString();
 298 }
 299
 300 void InfoSidebarPage::endInfoLines()
 301 {
 302     m_infos->setText(m_infoLines);
 303 }
 304
 305 bool InfoSidebarPage::showMetaInfo(const QString& key) const
 306 {
 307     // sorted list of keys, where it's data should be shown
 308     static const char* keys[] = {
 309                                     "Album",
 310                                     "Artist",
 311                                     "Author",
 312                                     "Bitrate",
 313                                     "Date",
 314                                     "Dimensions",
 315                                     "Genre",
 316                                     "Length",
 317                                     "Lines",
 318                                     "Pages",
 319                                     "Title",
 320                                     "Words"
 321                                 };
 322
 323     // do a binary search for the key...
 324     int top = 0;
 325     int bottom = sizeof(keys) / sizeof(char*) - 1;
 326     while (top < bottom) {
 327         const int middle = (top + bottom) / 2;
 328         const int result = key.compare(keys[middle]);
 329         if (result < 0) {
 330             bottom = middle - 1;
 331         } else if (result > 0) {
 332             top = middle + 1;
 333         } else {
 334             return true;
 335         }
 336     }
 337
 338     return false;
 339 }
 340
 341 void InfoSidebarPage::addInfoLine(const QString& labelText, const QString& infoText)
 342 {
 343     if (!m_infoLines.isEmpty())
 344         m_infoLines += "<br/>";
 345     m_infoLines += QString("<b>%1</b> %2").arg(labelText).arg(infoText);
 346 }
 347
 348 #include "infosidebarpage.moc"