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
 117 void InfoSidebarPage::setUrl(const KUrl& url)
 118 {
 119     if (!m_shownUrl.equals(url, KUrl::CompareWithoutTrailingSlash)) {
 120         cancelRequest();
 121         m_shownUrl = url;
 122         showItemInfo();
 123     }
 124 }
 125
 126 void InfoSidebarPage::setSelection(const KFileItemList& selection)
 127 {
 128     cancelRequest();
 129     m_currentSelection = selection;
 130     m_multipleSelection = (m_currentSelection.size() > 1);
 131     showItemInfo();
 132 }
 133
 134 void InfoSidebarPage::requestDelayedItemInfo(const KUrl& url)
 135 {
 136     cancelRequest();
 137
 138     if (!url.isEmpty() && !m_multipleSelection) {
 139         m_urlCandidate = url;
 140         m_timer->setSingleShot(true);
 141         m_timer->start(300);
 142     }
 143 }
 144
 145 void InfoSidebarPage::showItemInfo()
 146 {
 147     cancelRequest();
 148
 149     KFileItemList selectedItems = m_currentSelection;
 150     KUrl file;
 151     if (selectedItems.count() == 0) {
 152         file = m_shownUrl;
 153     } else {
 154         file = selectedItems[0]->url();
 155     }
 156     if (m_multipleSelection) {
 157         KIconLoader iconLoader;
 158         QPixmap icon = iconLoader.loadIcon("exec",
 159                                            K3Icon::NoGroup,
 160                                            K3Icon::SizeEnormous);
 161         m_preview->setPixmap(icon);
 162         m_name->setText(i18n("%1 items selected", selectedItems.count()));
 163     } else if (!applyBookmark(file)) {
 164         // try to get a preview pixmap from the item...
 165         KUrl::List list;
 166         list.append(file);
 167
 168         m_pendingPreview = true;
 169         m_preview->setPixmap(QPixmap());
 170
 171         KIO::PreviewJob* job = KIO::filePreview(list,
 172                                                 m_preview->width(),
 173                                                 K3Icon::SizeEnormous,
 174                                                 0,
 175                                                 0,
 176                                                 true,
 177                                                 false);
 178         job->setIgnoreMaximumSize(true);
 179
 180         connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
 181                 this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
 182         connect(job, SIGNAL(failed(const KFileItem&)),
 183                 this, SLOT(showIcon(const KFileItem&)));
 184
 185         QString text("<b>");
 186         text.append(file.fileName());
 187         text.append("</b>");
 188         m_name->setText(text);
 189     }
 190
 191     createMetaInfo();
 192 }
 193
 194 void InfoSidebarPage::slotTimeout()
 195 {
 196     m_shownUrl = m_urlCandidate;
 197     showItemInfo();
 198 }
 199
 200 void InfoSidebarPage::showIcon(const KFileItem& item)
 201 {
 202     m_pendingPreview = false;
 203     if (!applyBookmark(item.url())) {
 204         m_preview->setPixmap(item.pixmap(K3Icon::SizeEnormous));
 205     }
 206 }
 207
 208 void InfoSidebarPage::showPreview(const KFileItem& item,
 209                                   const QPixmap& pixmap)
 210 {
 211     Q_UNUSED(item);
 212     if (m_pendingPreview) {
 213         m_preview->setPixmap(pixmap);
 214         m_pendingPreview = false;
 215     }
 216 }
 217
 218 bool InfoSidebarPage::applyBookmark(const KUrl& url)
 219 {
 220     KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
 221     int count = placesModel->rowCount();
 222
 223     for (int i = 0; i < count; ++i) {
 224         QModelIndex index = placesModel->index(i, 0);
 225
 226         if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
 227             QString text("<b>");
 228             text.append(placesModel->text(index));
 229             text.append("</b>");
 230             m_name->setText(text);
 231
 232             m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
 233             return true;
 234         }
 235     }
 236
 237     return false;
 238 }
 239
 240 void InfoSidebarPage::cancelRequest()
 241 {
 242     m_timer->stop();
 243     m_pendingPreview = false;
 244 }
 245
 246 void InfoSidebarPage::createMetaInfo()
 247 {
 248     beginInfoLines();
 249     if (m_currentSelection.size() == 0) {
 250         KFileItem fileItem(S_IFDIR, KFileItem::Unknown, m_shownUrl);
 251         fileItem.refresh();
 252
 253         if (fileItem.isDir()) {
 254             addInfoLine(i18n("Type:"), i18n("Directory"));
 255         }
 256         if (MetaDataWidget::metaDataAvailable()) {
 257             m_metadataWidget->setFile(fileItem.url());
 258         }
 259     } else if (m_currentSelection.count() == 1) {
 260         KFileItem* fileItem = m_currentSelection.at(0);
 261         addInfoLine(i18n("Type:"), fileItem->mimeComment());
 262
 263         QString sizeText(KIO::convertSize(fileItem->size()));
 264         addInfoLine(i18n("Size:"), sizeText);
 265         addInfoLine(i18n("Modified:"), fileItem->timeString());
 266
 267         const KFileMetaInfo& metaInfo = fileItem->metaInfo();
 268         if (metaInfo.isValid()) {
 269             QStringList keys = metaInfo.supportedKeys();
 270             for (QStringList::Iterator it = keys.begin(); it != keys.end(); ++it) {
 271                 if (showMetaInfo(*it)) {
 272                     KFileMetaInfoItem metaInfoItem = metaInfo.item(*it);
 273                     addInfoLine(*it, metaInfoItem.value().toString());
 274                 }
 275             }
 276         }
 277         if (MetaDataWidget::metaDataAvailable()) {
 278             m_metadataWidget->setFile(fileItem->url());
 279         }
 280     } else {
 281         if (MetaDataWidget::metaDataAvailable()) {
 282             m_metadataWidget->setFiles(m_currentSelection.urlList());
 283         }
 284
 285         unsigned long int totSize = 0;
 286         foreach(KFileItem* item, m_currentSelection) {
 287             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
 288         }
 289         addInfoLine(i18n("Total size:"), KIO::convertSize(totSize));
 290     }
 291     endInfoLines();
 292 }
 293
 294 void InfoSidebarPage::beginInfoLines()
 295 {
 296     m_infoLines = QString();
 297 }
 298
 299 void InfoSidebarPage::endInfoLines()
 300 {
 301     m_infos->setText(m_infoLines);
 302 }
 303
 304 bool InfoSidebarPage::showMetaInfo(const QString& key) const
 305 {
 306     // sorted list of keys, where it's data should be shown
 307     static const char* keys[] = {
 308                                     "Album",
 309                                     "Artist",
 310                                     "Author",
 311                                     "Bitrate",
 312                                     "Date",
 313                                     "Dimensions",
 314                                     "Genre",
 315                                     "Length",
 316                                     "Lines",
 317                                     "Pages",
 318                                     "Title",
 319                                     "Words"
 320                                 };
 321
 322     // do a binary search for the key...
 323     int top = 0;
 324     int bottom = sizeof(keys) / sizeof(char*) - 1;
 325     while (top < bottom) {
 326         const int middle = (top + bottom) / 2;
 327         const int result = key.compare(keys[middle]);
 328         if (result < 0) {
 329             bottom = middle - 1;
 330         } else if (result > 0) {
 331             top = middle + 1;
 332         } else {
 333             return true;
 334         }
 335     }
 336
 337     return false;
 338 }
 339
 340 void InfoSidebarPage::addInfoLine(const QString& labelText, const QString& infoText)
 341 {
 342     if (!m_infoLines.isEmpty()) {
 343         m_infoLines += "<br/>";
 344     }
 345     m_infoLines += QString("<b>%1</b> %2").arg(labelText).arg(infoText);
 346 }
 347
 348 #include "infosidebarpage.moc"