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_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     connect(m_timer, SIGNAL(timeout()),
  66             this, SLOT(slotTimeout()));
  67
  68     QVBoxLayout* layout = new QVBoxLayout;
  69     layout->setSpacing(spacing);
  70
  71     // preview
  72     m_preview = new PixmapViewer(this);
  73     m_preview->setMinimumWidth(K3Icon::SizeEnormous);
  74     m_preview->setFixedHeight(K3Icon::SizeEnormous);
  75
  76     // name
  77     m_name = new QLabel(this);
  78     m_name->setTextFormat(Qt::RichText);
  79     m_name->setAlignment(m_name->alignment() | Qt::AlignHCenter);
  80     QFontMetrics fontMetrics(m_name->font());
  81     m_name->setMinimumHeight(fontMetrics.height() * 3);
  82     m_name->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Maximum);
  83
  84     KSeparator* sep1 = new KSeparator(this);
  85
  86     // general information
  87     m_infos = new QLabel(this);
  88     m_infos->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
  89     m_infos->setTextFormat(Qt::RichText);
  90
  91     KSeparator* sep2 = new KSeparator(this);
  92
  93     if (MetaDataWidget::metaDataAvailable()) {
  94         m_metadataWidget = new MetaDataWidget(this);
  95     }
  96
  97     layout->addItem(new QSpacerItem(spacing, spacing, QSizePolicy::Preferred, QSizePolicy::Fixed));
  98     layout->addWidget(m_preview);
  99     layout->addWidget(m_name);
 100     layout->addWidget(sep1);
 101     layout->addWidget(m_infos);
 102     layout->addWidget(sep2);
 103     if (m_metadataWidget) {
 104         layout->addWidget(m_metadataWidget);
 105         layout->addWidget(new KSeparator(this));
 106     }
 107     // ensure that widgets in the information side bar are aligned towards the top
 108     layout->addStretch(1);
 109     setLayout(layout);
 110 }
 111
 112 InfoSidebarPage::~InfoSidebarPage()
 113 {
 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     cancelRequest();
 128     SidebarPage::setSelection(selection);
 129     m_multipleSelection = (selection.size() > 1);
 130     showItemInfo();
 131 }
 132
 133 void InfoSidebarPage::showEvent(QShowEvent* event)
 134 {
 135     SidebarPage::showEvent(event);
 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     if (!isVisible()) {
 153         return;
 154     }
 155
 156     cancelRequest();
 157
 158     const KFileItemList& selectedItems = selection();
 159
 160     KUrl file;
 161     if (selectedItems.count() == 0) {
 162         file = m_shownUrl;
 163     } else {
 164         file = selectedItems[0]->url();
 165     }
 166     if (m_multipleSelection) {
 167         KIconLoader iconLoader;
 168         QPixmap icon = iconLoader.loadIcon("exec",
 169                                            K3Icon::NoGroup,
 170                                            K3Icon::SizeEnormous);
 171         m_preview->setPixmap(icon);
 172         m_name->setText(i18n("%1 items selected", selectedItems.count()));
 173     } else if (!applyBookmark(file)) {
 174         // try to get a preview pixmap from the item...
 175         KUrl::List list;
 176         list.append(file);
 177
 178         m_pendingPreview = true;
 179         m_preview->setPixmap(QPixmap());
 180
 181         KIO::PreviewJob* job = KIO::filePreview(list,
 182                                                 m_preview->width(),
 183                                                 K3Icon::SizeEnormous,
 184                                                 0,
 185                                                 0,
 186                                                 true,
 187                                                 false);
 188         job->setIgnoreMaximumSize(true);
 189
 190         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 191                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 192         connect(job, SIGNAL(failed(const KFileItem&)),
 193                 this, SLOT(showIcon(const KFileItem&)));
 194
 195         QString text("<b>");
 196         text.append(file.fileName());
 197         text.append("</b>");
 198         m_name->setText(text);
 199     }
 200
 201     createMetaInfo();
 202 }
 203
 204 void InfoSidebarPage::slotTimeout()
 205 {
 206     m_shownUrl = m_urlCandidate;
 207     showItemInfo();
 208 }
 209
 210 void InfoSidebarPage::showIcon(const KFileItem& item)
 211 {
 212     m_pendingPreview = false;
 213     if (!applyBookmark(item.url())) {
 214         m_preview->setPixmap(item.pixmap(K3Icon::SizeEnormous));
 215     }
 216 }
 217
 218 void InfoSidebarPage::showPreview(const KFileItem& item,
 219                                   const QPixmap& pixmap)
 220 {
 221     Q_UNUSED(item);
 222     if (m_pendingPreview) {
 223         m_preview->setPixmap(pixmap);
 224         m_pendingPreview = false;
 225     }
 226 }
 227
 228 bool InfoSidebarPage::applyBookmark(const KUrl& url)
 229 {
 230     KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
 231     int count = placesModel->rowCount();
 232
 233     for (int i = 0; i < count; ++i) {
 234         QModelIndex index = placesModel->index(i, 0);
 235
 236         if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
 237             QString text("<b>");
 238             text.append(placesModel->text(index));
 239             text.append("</b>");
 240             m_name->setText(text);
 241
 242             m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
 243             return true;
 244         }
 245     }
 246
 247     return false;
 248 }
 249
 250 void InfoSidebarPage::cancelRequest()
 251 {
 252     m_timer->stop();
 253     m_pendingPreview = false;
 254 }
 255
 256 void InfoSidebarPage::createMetaInfo()
 257 {
 258     beginInfoLines();
 259     const KFileItemList& selectedItems = selection();
 260     if (selectedItems.size() == 0) {
 261         KFileItem fileItem(S_IFDIR, KFileItem::Unknown, m_shownUrl);
 262         fileItem.refresh();
 263
 264         if (fileItem.isDir()) {
 265             addInfoLine(i18n("Type:"), i18n("Directory"));
 266         }
 267         if (MetaDataWidget::metaDataAvailable()) {
 268             m_metadataWidget->setFile(fileItem.url());
 269         }
 270     } else if (selectedItems.count() == 1) {
 271         KFileItem* fileItem = selectedItems.at(0);
 272         addInfoLine(i18n("Type:"), fileItem->mimeComment());
 273
 274         QString sizeText(KIO::convertSize(fileItem->size()));
 275         addInfoLine(i18n("Size:"), sizeText);
 276         addInfoLine(i18n("Modified:"), fileItem->timeString());
 277
 278         const KFileMetaInfo& metaInfo = fileItem->metaInfo();
 279         if (metaInfo.isValid()) {
 280             QStringList keys = metaInfo.supportedKeys();
 281             for (QStringList::Iterator it = keys.begin(); it != keys.end(); ++it) {
 282                 if (showMetaInfo(*it)) {
 283                     KFileMetaInfoItem metaInfoItem = metaInfo.item(*it);
 284                     addInfoLine(*it, metaInfoItem.value().toString());
 285                 }
 286             }
 287         }
 288         if (MetaDataWidget::metaDataAvailable()) {
 289             m_metadataWidget->setFile(fileItem->url());
 290         }
 291     } else {
 292         if (MetaDataWidget::metaDataAvailable()) {
 293             m_metadataWidget->setFiles(selectedItems.urlList());
 294         }
 295
 296         unsigned long int totSize = 0;
 297         foreach(KFileItem* item, selectedItems) {
 298             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
 299         }
 300         addInfoLine(i18n("Total size:"), KIO::convertSize(totSize));
 301     }
 302     endInfoLines();
 303 }
 304
 305 void InfoSidebarPage::beginInfoLines()
 306 {
 307     m_infoLines = QString();
 308 }
 309
 310 void InfoSidebarPage::endInfoLines()
 311 {
 312     m_infos->setText(m_infoLines);
 313 }
 314
 315 bool InfoSidebarPage::showMetaInfo(const QString& key) const
 316 {
 317     // sorted list of keys, where it's data should be shown
 318     static const char* keys[] = {
 319                                     "Album",
 320                                     "Artist",
 321                                     "Author",
 322                                     "Bitrate",
 323                                     "Date",
 324                                     "Dimensions",
 325                                     "Genre",
 326                                     "Length",
 327                                     "Lines",
 328                                     "Pages",
 329                                     "Title",
 330                                     "Words"
 331                                 };
 332
 333     // do a binary search for the key...
 334     int top = 0;
 335     int bottom = sizeof(keys) / sizeof(char*) - 1;
 336     while (top < bottom) {
 337         const int middle = (top + bottom) / 2;
 338         const int result = key.compare(keys[middle]);
 339         if (result < 0) {
 340             bottom = middle - 1;
 341         } else if (result > 0) {
 342             top = middle + 1;
 343         } else {
 344             return true;
 345         }
 346     }
 347
 348     return false;
 349 }
 350
 351 void InfoSidebarPage::addInfoLine(const QString& labelText, const QString& infoText)
 352 {
 353     if (!m_infoLines.isEmpty()) {
 354         m_infoLines += "<br/>";
 355     }
 356     m_infoLines += QString("<b>%1</b> %2").arg(labelText).arg(infoText);
 357 }
 358
 359 #include "infosidebarpage.moc"