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 <QDir>
  25 #include <QEvent>
  26 #include <QFontMetrics>
  27 #include <QInputDialog>
  28 #include <QLabel>
  29 #include <QLayout>
  30 #include <QMenu>
  31 #include <QPainter>
  32 #include <QPixmap>
  33 #include <QPushButton>
  34 #include <QResizeEvent>
  35 #include <QTimer>
  36
  37 #include <kfileplacesmodel.h>
  38 #include <klocale.h>
  39 #include <kstandarddirs.h>
  40 #include <kio/previewjob.h>
  41 #include <kfileitem.h>
  42 #include <kdialog.h>
  43 #include <kglobalsettings.h>
  44 #include <kfilemetainfo.h>
  45 #include <kvbox.h>
  46 #include <kseparator.h>
  47 #include <kiconloader.h>
  48
  49 #include "pixmapviewer.h"
  50 #include "dolphinsettings.h"
  51 #include "metadatawidget.h"
  52
  53 InfoSidebarPage::InfoSidebarPage(QWidget* parent) :
  54     SidebarPage(parent),
  55     m_multipleSelection(false), //TODO: check if I'm needed
  56     m_pendingPreview(false),
  57     m_timer(0),
  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     m_name->setWordWrap(true);
  82
  83     // general information
  84     m_infos = new QLabel(this);
  85     m_infos->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
  86     m_infos->setTextFormat(Qt::RichText);
  87
  88     if (MetaDataWidget::metaDataAvailable()) {
  89         m_metadataWidget = new MetaDataWidget(this);
  90     }
  91
  92     layout->addItem(new QSpacerItem(spacing, spacing, QSizePolicy::Preferred, QSizePolicy::Fixed));
  93     layout->addWidget(m_preview);
  94     layout->addWidget(m_name);
  95     layout->addWidget(new KSeparator(this));
  96     layout->addWidget(m_infos);
  97     layout->addWidget(new KSeparator(this));
  98     if (m_metadataWidget) {
  99         layout->addWidget(m_metadataWidget);
 100         layout->addWidget(new KSeparator(this));
 101     }
 102     // ensure that widgets in the information side bar are aligned towards the top
 103     layout->addStretch(1);
 104     setLayout(layout);
 105 }
 106
 107 InfoSidebarPage::~InfoSidebarPage()
 108 {
 109 }
 110
 111 void InfoSidebarPage::setUrl(const KUrl& url)
 112 {
 113     if (!m_shownUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 114         cancelRequest();
 115         m_shownUrl = url;
 116         showItemInfo();
 117     }
 118 }
 119
 120 void InfoSidebarPage::setSelection(const KFileItemList& selection)
 121 {
 122     cancelRequest();
 123     SidebarPage::setSelection(selection);
 124     m_multipleSelection = (selection.size() > 1);
 125     showItemInfo();
 126 }
 127
 128 void InfoSidebarPage::requestDelayedItemInfo(const KUrl& url)
 129 {
 130     cancelRequest();
 131
 132     if (!url.isEmpty() && !m_multipleSelection) {
 133         m_urlCandidate = url;
 134         m_timer->setSingleShot(true);
 135         m_timer->start(300);
 136     }
 137 }
 138
 139 void InfoSidebarPage::showEvent(QShowEvent* event)
 140 {
 141     SidebarPage::showEvent(event);
 142     showItemInfo();
 143 }
 144
 145 void InfoSidebarPage::resizeEvent(QResizeEvent* event)
 146 {
 147     // If the item name cannot get wrapped, the maximum width of
 148     // the label is increased, so that the width of the information sidebar
 149     // gets increased. To prevent this, the maximum width is adjusted to
 150     // the current width of the sidebar.
 151     m_name->setMaximumWidth(event->size().width() - KDialog::spacingHint() * 4);
 152     SidebarPage::resizeEvent(event);
 153 }
 154
 155 void InfoSidebarPage::showItemInfo()
 156 {
 157     if (!isVisible()) {
 158         return;
 159     }
 160
 161     cancelRequest();
 162
 163     const KFileItemList& selectedItems = selection();
 164
 165     KUrl file;
 166     if (selectedItems.count() == 0) {
 167         file = m_shownUrl;
 168     } else {
 169         file = selectedItems[0]->url();
 170     }
 171     if (m_multipleSelection) {
 172         KIconLoader iconLoader;
 173         QPixmap icon = iconLoader.loadIcon("exec",
 174                                            K3Icon::NoGroup,
 175                                            K3Icon::SizeEnormous);
 176         m_preview->setPixmap(icon);
 177         m_name->setText(i18n("%1 items selected", selectedItems.count()));
 178     } else if (!applyBookmark(file)) {
 179         // try to get a preview pixmap from the item...
 180         KUrl::List list;
 181         list.append(file);
 182
 183         m_pendingPreview = true;
 184         m_preview->setPixmap(QPixmap());
 185
 186         KIO::PreviewJob* job = KIO::filePreview(list,
 187                                                 m_preview->width(),
 188                                                 K3Icon::SizeEnormous,
 189                                                 0,
 190                                                 0,
 191                                                 true,
 192                                                 false);
 193         job->setIgnoreMaximumSize(true);
 194
 195         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 196                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 197         connect(job, SIGNAL(failed(const KFileItem&)),
 198                 this, SLOT(showIcon(const KFileItem&)));
 199
 200         QString text("<b>");
 201         text.append(file.fileName());
 202         text.append("</b>");
 203         m_name->setText(text);
 204     }
 205
 206     createMetaInfo();
 207 }
 208
 209 void InfoSidebarPage::slotTimeout()
 210 {
 211     m_shownUrl = m_urlCandidate;
 212     showItemInfo();
 213 }
 214
 215 void InfoSidebarPage::showIcon(const KFileItem& item)
 216 {
 217     m_pendingPreview = false;
 218     if (!applyBookmark(item.url())) {
 219         m_preview->setPixmap(item.pixmap(K3Icon::SizeEnormous));
 220     }
 221 }
 222
 223 void InfoSidebarPage::showPreview(const KFileItem& item,
 224                                   const QPixmap& pixmap)
 225 {
 226     Q_UNUSED(item);
 227     if (m_pendingPreview) {
 228         m_preview->setPixmap(pixmap);
 229         m_pendingPreview = false;
 230     }
 231 }
 232
 233 bool InfoSidebarPage::applyBookmark(const KUrl& url)
 234 {
 235     KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
 236     int count = placesModel->rowCount();
 237
 238     for (int i = 0; i < count; ++i) {
 239         QModelIndex index = placesModel->index(i, 0);
 240
 241         if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
 242             QString text("<b>");
 243             text.append(placesModel->text(index));
 244             text.append("</b>");
 245             m_name->setText(text);
 246
 247             m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
 248             return true;
 249         }
 250     }
 251
 252     return false;
 253 }
 254
 255 void InfoSidebarPage::cancelRequest()
 256 {
 257     m_timer->stop();
 258     m_pendingPreview = false;
 259 }
 260
 261 void InfoSidebarPage::createMetaInfo()
 262 {
 263     beginInfoLines();
 264     const KFileItemList& selectedItems = selection();
 265     if (selectedItems.size() == 0) {
 266         KFileItem fileItem(S_IFDIR, KFileItem::Unknown, m_shownUrl);
 267         fileItem.refresh();
 268
 269         if (fileItem.isDir()) {
 270             addInfoLine(i18n("Type:"), i18n("Directory"));
 271         }
 272         if (MetaDataWidget::metaDataAvailable()) {
 273             m_metadataWidget->setFile(fileItem.url());
 274         }
 275     } else if (selectedItems.count() == 1) {
 276         KFileItem* fileItem = selectedItems.at(0);
 277         addInfoLine(i18n("Type:"), fileItem->mimeComment());
 278
 279         QString sizeText(KIO::convertSize(fileItem->size()));
 280         addInfoLine(i18n("Size:"), sizeText);
 281         addInfoLine(i18n("Modified:"), fileItem->timeString());
 282
 283         const KFileMetaInfo& metaInfo = fileItem->metaInfo();
 284         if (metaInfo.isValid()) {
 285             QStringList keys = metaInfo.supportedKeys();
 286             for (QStringList::Iterator it = keys.begin(); it != keys.end(); ++it) {
 287                 if (showMetaInfo(*it)) {
 288                     KFileMetaInfoItem metaInfoItem = metaInfo.item(*it);
 289                     addInfoLine(*it, metaInfoItem.value().toString());
 290                 }
 291             }
 292         }
 293         if (MetaDataWidget::metaDataAvailable()) {
 294             m_metadataWidget->setFile(fileItem->url());
 295         }
 296     } else {
 297         if (MetaDataWidget::metaDataAvailable()) {
 298             m_metadataWidget->setFiles(selectedItems.urlList());
 299         }
 300
 301         unsigned long int totSize = 0;
 302         foreach(KFileItem* item, selectedItems) {
 303             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
 304         }
 305         addInfoLine(i18n("Total size:"), KIO::convertSize(totSize));
 306     }
 307     endInfoLines();
 308 }
 309
 310 void InfoSidebarPage::beginInfoLines()
 311 {
 312     m_infoLines = QString();
 313 }
 314
 315 void InfoSidebarPage::endInfoLines()
 316 {
 317     m_infos->setText(m_infoLines);
 318 }
 319
 320 bool InfoSidebarPage::showMetaInfo(const QString& key) const
 321 {
 322     // sorted list of keys, where it's data should be shown
 323     static const char* keys[] = {
 324                                     "Album",
 325                                     "Artist",
 326                                     "Author",
 327                                     "Bitrate",
 328                                     "Date",
 329                                     "Dimensions",
 330                                     "Genre",
 331                                     "Length",
 332                                     "Lines",
 333                                     "Pages",
 334                                     "Title",
 335                                     "Words"
 336                                 };
 337
 338     // do a binary search for the key...
 339     int top = 0;
 340     int bottom = sizeof(keys) / sizeof(char*) - 1;
 341     while (top < bottom) {
 342         const int middle = (top + bottom) / 2;
 343         const int result = key.compare(keys[middle]);
 344         if (result < 0) {
 345             bottom = middle - 1;
 346         } else if (result > 0) {
 347             top = middle + 1;
 348         } else {
 349             return true;
 350         }
 351     }
 352
 353     return false;
 354 }
 355
 356 void InfoSidebarPage::addInfoLine(const QString& labelText, const QString& infoText)
 357 {
 358     if (!m_infoLines.isEmpty()) {
 359         m_infoLines += "<br/>";
 360     }
 361     m_infoLines += QString("<b>%1</b> %2").arg(labelText).arg(infoText);
 362 }
 363
 364 #include "infosidebarpage.moc"