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 "infosidebarpage.h"
  21
  22 #include <config-kmetadata.h>
  23
  24 #include <kfileplacesmodel.h>
  25 #include <klocale.h>
  26 #include <kstandarddirs.h>
  27 #include <kio/previewjob.h>
  28 #include <kfileitem.h>
  29 #include <kdialog.h>
  30 #include <kglobalsettings.h>
  31 #include <kfilemetainfo.h>
  32 #include <kvbox.h>
  33 #include <kseparator.h>
  34 #include <kiconloader.h>
  35
  36 #include <QDir>
  37 #include <QEvent>
  38 #include <QFontMetrics>
  39 #include <QInputDialog>
  40 #include <QLabel>
  41 #include <QLayout>
  42 #include <QMenu>
  43 #include <QPainter>
  44 #include <QPixmap>
  45 #include <QPushButton>
  46 #include <QResizeEvent>
  47 #include <QTimer>
  48
  49 #include "dolphinsettings.h"
  50 #include "metadatawidget.h"
  51 #include "pixmapviewer.h"
  52
  53 InfoSidebarPage::InfoSidebarPage(QWidget* parent) :
  54     SidebarPage(parent),
  55     m_pendingPreview(false),
  56     m_timer(0),
  57     m_preview(0),
  58     m_name(0),
  59     m_infos(0),
  60     m_metadataWidget(0)
  61 {
  62     const int spacing = KDialog::spacingHint();
  63
  64     m_timer = new QTimer(this);
  65     m_timer->setSingleShot(true);
  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 (url.isValid() && !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     SidebarPage::setSelection(selection);
 123     m_timer->start(TimerDelay);
 124 }
 125
 126 void InfoSidebarPage::requestDelayedItemInfo(const KUrl& url)
 127 {
 128     cancelRequest();
 129
 130     if (!url.isEmpty() && (selection().size() <= 1)) {
 131         m_urlCandidate = url;
 132         m_timer->start(TimerDelay);
 133     }
 134 }
 135
 136 void InfoSidebarPage::showEvent(QShowEvent* event)
 137 {
 138     SidebarPage::showEvent(event);
 139     if (event->spontaneous()) {
 140         return;
 141     }
 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     const int itemCount = selectedItems.count();
 167     if (selectedItems.count() == 0) {
 168         file = m_shownUrl;
 169     } else {
 170         file = selectedItems[0]->url();
 171     }
 172     if (itemCount > 1) {
 173         KIconLoader iconLoader;
 174         QPixmap icon = iconLoader.loadIcon("exec",
 175                                            K3Icon::NoGroup,
 176                                            K3Icon::SizeEnormous);
 177         m_preview->setPixmap(icon);
 178         m_name->setText(i18n("%1 items selected", selectedItems.count()));
 179     } else if (!applyBookmark(file)) {
 180         // try to get a preview pixmap from the item...
 181         KUrl::List list;
 182         list.append(file);
 183
 184         m_pendingPreview = true;
 185         m_preview->setPixmap(QPixmap());
 186
 187         KIO::PreviewJob* job = KIO::filePreview(list,
 188                                                 m_preview->width(),
 189                                                 K3Icon::SizeEnormous,
 190                                                 0,
 191                                                 0,
 192                                                 true,
 193                                                 false);
 194         job->setIgnoreMaximumSize(true);
 195
 196         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 197                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 198         connect(job, SIGNAL(failed(const KFileItem&)),
 199                 this, SLOT(showIcon(const KFileItem&)));
 200
 201         QString text("<b>");
 202         text.append(file.fileName());
 203         text.append("</b>");
 204         m_name->setText(text);
 205     }
 206
 207     createMetaInfo();
 208 }
 209
 210 void InfoSidebarPage::slotTimeout()
 211 {
 212     m_shownUrl = m_urlCandidate;
 213     showItemInfo();
 214 }
 215
 216 void InfoSidebarPage::showIcon(const KFileItem& item)
 217 {
 218     m_pendingPreview = false;
 219     if (!applyBookmark(item.url())) {
 220         m_preview->setPixmap(item.pixmap(K3Icon::SizeEnormous));
 221     }
 222 }
 223
 224 void InfoSidebarPage::showPreview(const KFileItem& item,
 225                                   const QPixmap& pixmap)
 226 {
 227     Q_UNUSED(item);
 228     if (m_pendingPreview) {
 229         m_preview->setPixmap(pixmap);
 230         m_pendingPreview = false;
 231     }
 232 }
 233
 234 bool InfoSidebarPage::applyBookmark(const KUrl& url)
 235 {
 236     KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
 237     int count = placesModel->rowCount();
 238
 239     for (int i = 0; i < count; ++i) {
 240         QModelIndex index = placesModel->index(i, 0);
 241
 242         if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
 243             QString text("<b>");
 244             text.append(placesModel->text(index));
 245             text.append("</b>");
 246             m_name->setText(text);
 247
 248             m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
 249             return true;
 250         }
 251     }
 252
 253     return false;
 254 }
 255
 256 void InfoSidebarPage::cancelRequest()
 257 {
 258     m_timer->stop();
 259     m_pendingPreview = false;
 260 }
 261
 262 void InfoSidebarPage::createMetaInfo()
 263 {
 264     beginInfoLines();
 265     const KFileItemList& selectedItems = selection();
 266     if (selectedItems.size() == 0) {
 267         KFileItem fileItem(S_IFDIR, KFileItem::Unknown, m_shownUrl);
 268         fileItem.refresh();
 269
 270         if (fileItem.isDir()) {
 271             addInfoLine(i18n("Type:"), i18n("Directory"));
 272         }
 273         if (MetaDataWidget::metaDataAvailable()) {
 274             m_metadataWidget->setFile(fileItem.url());
 275         }
 276     } else if (selectedItems.count() == 1) {
 277         KFileItem* fileItem = selectedItems.at(0);
 278         addInfoLine(i18n("Type:"), fileItem->mimeComment());
 279
 280         QString sizeText(KIO::convertSize(fileItem->size()));
 281         addInfoLine(i18n("Size:"), sizeText);
 282         addInfoLine(i18n("Modified:"), fileItem->timeString());
 283
 284         const KFileMetaInfo& metaInfo = fileItem->metaInfo();
 285         if (metaInfo.isValid()) {
 286             QStringList keys = metaInfo.supportedKeys();
 287             for (QStringList::Iterator it = keys.begin(); it != keys.end(); ++it) {
 288                 if (showMetaInfo(*it)) {
 289                     KFileMetaInfoItem metaInfoItem = metaInfo.item(*it);
 290                     addInfoLine(*it, metaInfoItem.value().toString());
 291                 }
 292             }
 293         }
 294         if (MetaDataWidget::metaDataAvailable()) {
 295             m_metadataWidget->setFile(fileItem->url());
 296         }
 297     } else {
 298         if (MetaDataWidget::metaDataAvailable()) {
 299             m_metadataWidget->setFiles(selectedItems.urlList());
 300         }
 301
 302         unsigned long int totSize = 0;
 303         foreach(KFileItem* item, selectedItems) {
 304             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
 305         }
 306         addInfoLine(i18n("Total size:"), KIO::convertSize(totSize));
 307     }
 308     endInfoLines();
 309 }
 310
 311 void InfoSidebarPage::beginInfoLines()
 312 {
 313     m_infoLines = QString();
 314 }
 315
 316 void InfoSidebarPage::endInfoLines()
 317 {
 318     m_infos->setText(m_infoLines);
 319 }
 320
 321 bool InfoSidebarPage::showMetaInfo(const QString& key) const
 322 {
 323     // sorted list of keys, where it's data should be shown
 324     static const char* keys[] = {
 325                                     "Album",
 326                                     "Artist",
 327                                     "Author",
 328                                     "Bitrate",
 329                                     "Date",
 330                                     "Dimensions",
 331                                     "Genre",
 332                                     "Length",
 333                                     "Lines",
 334                                     "Pages",
 335                                     "Title",
 336                                     "Words"
 337                                 };
 338
 339     // do a binary search for the key...
 340     int top = 0;
 341     int bottom = sizeof(keys) / sizeof(char*) - 1;
 342     while (top < bottom) {
 343         const int middle = (top + bottom) / 2;
 344         const int result = key.compare(keys[middle]);
 345         if (result < 0) {
 346             bottom = middle - 1;
 347         } else if (result > 0) {
 348             top = middle + 1;
 349         } else {
 350             return true;
 351         }
 352     }
 353
 354     return false;
 355 }
 356
 357 void InfoSidebarPage::addInfoLine(const QString& labelText, const QString& infoText)
 358 {
 359     if (!m_infoLines.isEmpty()) {
 360         m_infoLines += "<br/>";
 361     }
 362     m_infoLines += QString("<b>%1</b> %2").arg(labelText).arg(infoText);
 363 }
 364
 365 #include "infosidebarpage.moc"