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_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     if (event->spontaneous()) {
 143         return;
 144     }
 145     showItemInfo();
 146 }
 147
 148 void InfoSidebarPage::resizeEvent(QResizeEvent* event)
 149 {
 150     // If the item name cannot get wrapped, the maximum width of
 151     // the label is increased, so that the width of the information sidebar
 152     // gets increased. To prevent this, the maximum width is adjusted to
 153     // the current width of the sidebar.
 154     m_name->setMaximumWidth(event->size().width() - KDialog::spacingHint() * 4);
 155     SidebarPage::resizeEvent(event);
 156 }
 157
 158 void InfoSidebarPage::showItemInfo()
 159 {
 160     if (!isVisible()) {
 161         return;
 162     }
 163
 164     cancelRequest();
 165
 166     const KFileItemList& selectedItems = selection();
 167
 168     KUrl file;
 169     if (selectedItems.count() == 0) {
 170         file = m_shownUrl;
 171     } else {
 172         file = selectedItems[0]->url();
 173     }
 174     if (m_multipleSelection) {
 175         KIconLoader iconLoader;
 176         QPixmap icon = iconLoader.loadIcon("exec",
 177                                            K3Icon::NoGroup,
 178                                            K3Icon::SizeEnormous);
 179         m_preview->setPixmap(icon);
 180         m_name->setText(i18n("%1 items selected", selectedItems.count()));
 181     } else if (!applyBookmark(file)) {
 182         // try to get a preview pixmap from the item...
 183         KUrl::List list;
 184         list.append(file);
 185
 186         m_pendingPreview = true;
 187         m_preview->setPixmap(QPixmap());
 188
 189         KIO::PreviewJob* job = KIO::filePreview(list,
 190                                                 m_preview->width(),
 191                                                 K3Icon::SizeEnormous,
 192                                                 0,
 193                                                 0,
 194                                                 true,
 195                                                 false);
 196         job->setIgnoreMaximumSize(true);
 197
 198         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 199                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 200         connect(job, SIGNAL(failed(const KFileItem&)),
 201                 this, SLOT(showIcon(const KFileItem&)));
 202
 203         QString text("<b>");
 204         text.append(file.fileName());
 205         text.append("</b>");
 206         m_name->setText(text);
 207     }
 208
 209     createMetaInfo();
 210 }
 211
 212 void InfoSidebarPage::slotTimeout()
 213 {
 214     m_shownUrl = m_urlCandidate;
 215     showItemInfo();
 216 }
 217
 218 void InfoSidebarPage::showIcon(const KFileItem& item)
 219 {
 220     m_pendingPreview = false;
 221     if (!applyBookmark(item.url())) {
 222         m_preview->setPixmap(item.pixmap(K3Icon::SizeEnormous));
 223     }
 224 }
 225
 226 void InfoSidebarPage::showPreview(const KFileItem& item,
 227                                   const QPixmap& pixmap)
 228 {
 229     Q_UNUSED(item);
 230     if (m_pendingPreview) {
 231         m_preview->setPixmap(pixmap);
 232         m_pendingPreview = false;
 233     }
 234 }
 235
 236 bool InfoSidebarPage::applyBookmark(const KUrl& url)
 237 {
 238     KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
 239     int count = placesModel->rowCount();
 240
 241     for (int i = 0; i < count; ++i) {
 242         QModelIndex index = placesModel->index(i, 0);
 243
 244         if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
 245             QString text("<b>");
 246             text.append(placesModel->text(index));
 247             text.append("</b>");
 248             m_name->setText(text);
 249
 250             m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
 251             return true;
 252         }
 253     }
 254
 255     return false;
 256 }
 257
 258 void InfoSidebarPage::cancelRequest()
 259 {
 260     m_timer->stop();
 261     m_pendingPreview = false;
 262 }
 263
 264 void InfoSidebarPage::createMetaInfo()
 265 {
 266     beginInfoLines();
 267     const KFileItemList& selectedItems = selection();
 268     if (selectedItems.size() == 0) {
 269         KFileItem fileItem(S_IFDIR, KFileItem::Unknown, m_shownUrl);
 270         fileItem.refresh();
 271
 272         if (fileItem.isDir()) {
 273             addInfoLine(i18n("Type:"), i18n("Directory"));
 274         }
 275         if (MetaDataWidget::metaDataAvailable()) {
 276             m_metadataWidget->setFile(fileItem.url());
 277         }
 278     } else if (selectedItems.count() == 1) {
 279         KFileItem* fileItem = selectedItems.at(0);
 280         addInfoLine(i18n("Type:"), fileItem->mimeComment());
 281
 282         QString sizeText(KIO::convertSize(fileItem->size()));
 283         addInfoLine(i18n("Size:"), sizeText);
 284         addInfoLine(i18n("Modified:"), fileItem->timeString());
 285
 286         const KFileMetaInfo& metaInfo = fileItem->metaInfo();
 287         if (metaInfo.isValid()) {
 288             QStringList keys = metaInfo.supportedKeys();
 289             for (QStringList::Iterator it = keys.begin(); it != keys.end(); ++it) {
 290                 if (showMetaInfo(*it)) {
 291                     KFileMetaInfoItem metaInfoItem = metaInfo.item(*it);
 292                     addInfoLine(*it, metaInfoItem.value().toString());
 293                 }
 294             }
 295         }
 296         if (MetaDataWidget::metaDataAvailable()) {
 297             m_metadataWidget->setFile(fileItem->url());
 298         }
 299     } else {
 300         if (MetaDataWidget::metaDataAvailable()) {
 301             m_metadataWidget->setFiles(selectedItems.urlList());
 302         }
 303
 304         unsigned long int totSize = 0;
 305         foreach(KFileItem* item, selectedItems) {
 306             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
 307         }
 308         addInfoLine(i18n("Total size:"), KIO::convertSize(totSize));
 309     }
 310     endInfoLines();
 311 }
 312
 313 void InfoSidebarPage::beginInfoLines()
 314 {
 315     m_infoLines = QString();
 316 }
 317
 318 void InfoSidebarPage::endInfoLines()
 319 {
 320     m_infos->setText(m_infoLines);
 321 }
 322
 323 bool InfoSidebarPage::showMetaInfo(const QString& key) const
 324 {
 325     // sorted list of keys, where it's data should be shown
 326     static const char* keys[] = {
 327                                     "Album",
 328                                     "Artist",
 329                                     "Author",
 330                                     "Bitrate",
 331                                     "Date",
 332                                     "Dimensions",
 333                                     "Genre",
 334                                     "Length",
 335                                     "Lines",
 336                                     "Pages",
 337                                     "Title",
 338                                     "Words"
 339                                 };
 340
 341     // do a binary search for the key...
 342     int top = 0;
 343     int bottom = sizeof(keys) / sizeof(char*) - 1;
 344     while (top < bottom) {
 345         const int middle = (top + bottom) / 2;
 346         const int result = key.compare(keys[middle]);
 347         if (result < 0) {
 348             bottom = middle - 1;
 349         } else if (result > 0) {
 350             top = middle + 1;
 351         } else {
 352             return true;
 353         }
 354     }
 355
 356     return false;
 357 }
 358
 359 void InfoSidebarPage::addInfoLine(const QString& labelText, const QString& infoText)
 360 {
 361     if (!m_infoLines.isEmpty()) {
 362         m_infoLines += "<br/>";
 363     }
 364     m_infoLines += QString("<b>%1</b> %2").arg(labelText).arg(infoText);
 365 }
 366
 367 #include "infosidebarpage.moc"