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Diffstat (limited to 'src/infosidebarpage.cpp')
| -rw-r--r-- | src/infosidebarpage.cpp | 630 |
1 files changed, 630 insertions, 0 deletions
diff --git a/src/infosidebarpage.cpp b/src/infosidebarpage.cpp new file mode 100644 index 0000000..7cfe346 --- /dev/null +++ b/src/infosidebarpage.cpp @@ -0,0 +1,630 @@ +/*************************************************************************** + * Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at> * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * + ***************************************************************************/ + +#include "infosidebarpage.h" +#include <assert.h> + +#include <qlayout.h> +#include <qpixmap.h> +#include <qlabel.h> +#include <qtimer.h> +#include <qpushbutton.h> +#include <qvbox.h> +#include <qvgroupbox.h> +#include <qpopupmenu.h> +#include <qpainter.h> +#include <qfontmetrics.h> +#include <qgrid.h> +#include <qhgroupbox.h> + +#include <kbookmarkmanager.h> +#include <klocale.h> +#include <kstandarddirs.h> +#include <kio/previewjob.h> +#include <kfileitem.h> +#include <kdialog.h> +#include <kglobalsettings.h> +#include <kfilemetainfo.h> + +#include "dolphin.h" +#include "pixmapviewer.h" +#include "dolphinsettings.h" + +InfoSidebarPage::InfoSidebarPage(QWidget* parent) : + SidebarPage(parent), + m_multipleSelection(false), + m_pendingPreview(false), + m_timer(0), + m_preview(0), + m_name(0), + m_currInfoLineIdx(0), + m_infoGrid(0), + m_actionBox(0) +{ + const int spacing = KDialog::spacingHint(); + + m_timer = new QTimer(this); + connect(m_timer, SIGNAL(timeout()), + this, SLOT(slotTimeout())); + + QVBoxLayout* layout = new QVBoxLayout(this); + layout->setSpacing(spacing); + + // preview + m_preview = new PixmapViewer(this); + m_preview->setMinimumWidth(KIcon::SizeEnormous); + m_preview->setFixedHeight(KIcon::SizeEnormous); + + // name + m_name = new QLabel(this); + m_name->setTextFormat(Qt::RichText); + m_name->setAlignment(m_name->alignment() | Qt::AlignHCenter); + QFontMetrics fontMetrics(m_name->font()); + m_name->setMinimumHeight(fontMetrics.height() * 3); + m_name->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Maximum); + + QWidget* sep1 = new QHGroupBox(this); // TODO: check whether default widget exist for this? + sep1->setFixedHeight(1); + + // general information + m_infoGrid = new QGrid(2, this); + m_infoGrid->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); + + QWidget* sep2 = new QHGroupBox(this); // TODO: check whether default widget exist for this? + sep2->setFixedHeight(1); + + // actions + m_actionBox = new QVBox(this); + m_actionBox->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); + + // Add a dummy widget with no restriction regarding a vertical resizing. + // This assures that information is always top aligned. + QWidget* dummy = new QWidget(this); + + layout->addItem(new QSpacerItem(spacing, spacing, QSizePolicy::Preferred, QSizePolicy::Fixed)); + layout->addWidget(m_preview); + layout->addWidget(m_name); + layout->addWidget(sep1); + layout->addWidget(m_infoGrid); + layout->addWidget(sep2); + layout->addWidget(m_actionBox); + layout->addWidget(dummy); + + connect(&Dolphin::mainWin(), SIGNAL(selectionChanged()), + this, SLOT(showItemInfo())); + + connectToActiveView(); +} + +InfoSidebarPage::~InfoSidebarPage() +{ +} + +void InfoSidebarPage::activeViewChanged() +{ + connectToActiveView(); +} + +void InfoSidebarPage::requestDelayedItemInfo(const KURL& url) +{ + cancelRequest(); + + if (!url.isEmpty() && !m_multipleSelection) { + m_urlCandidate = url; + m_timer->start(300, true); + } +} + +void InfoSidebarPage::requestItemInfo(const KURL& url) +{ + cancelRequest(); + + if (!url.isEmpty() && !m_multipleSelection) { + m_shownURL = url; + showItemInfo(); + } +} + +void InfoSidebarPage::showItemInfo() +{ + cancelRequest(); + + m_multipleSelection = false; + + // show the preview... + DolphinView* view = Dolphin::mainWin().activeView(); + const KFileItemList* selectedItems = view->selectedItems(); + if ((selectedItems != 0) && selectedItems->count() > 1) { + m_multipleSelection = true; + } + + if (m_multipleSelection) { + KIconLoader iconLoader; + QPixmap icon = iconLoader.loadIcon("exec", + KIcon::NoGroup, + KIcon::SizeEnormous); + m_preview->setPixmap(icon); + m_name->setText(i18n("%n items selected", "%n items selected", selectedItems->count())); + } + else if (!applyBookmark()) { + // try to get a preview pixmap from the item... + KURL::List list; + list.append(m_shownURL); + + m_pendingPreview = true; + m_preview->setPixmap(QPixmap()); + + KIO::PreviewJob* job = KIO::filePreview(list, + m_preview->width(), + KIcon::SizeEnormous); + connect(job, SIGNAL(gotPreview(const KFileItem*, const QPixmap&)), + this, SLOT(gotPreview(const KFileItem*, const QPixmap&))); + connect(job, SIGNAL(failed(const KFileItem*)), + this, SLOT(slotPreviewFailed(const KFileItem*))); + + QString text("<b>"); + text.append(m_shownURL.fileName()); + text.append("</b>"); + m_name->setText(text); + } + + createMetaInfo(); + insertActions(); +} + +void InfoSidebarPage::slotTimeout() +{ + m_shownURL = m_urlCandidate; + showItemInfo(); +} + +void InfoSidebarPage::slotPreviewFailed(const KFileItem* item) +{ + m_pendingPreview = false; + if (!applyBookmark()) { + m_preview->setPixmap(item->pixmap(KIcon::SizeEnormous)); + } +} + +void InfoSidebarPage::gotPreview(const KFileItem* /* item */, + const QPixmap& pixmap) +{ + if (m_pendingPreview) { + m_preview->setPixmap(pixmap); + m_pendingPreview = false; + } +} + +void InfoSidebarPage::startService(int index) +{ + DolphinView* view = Dolphin::mainWin().activeView(); + if (view->hasSelection()) { + KURL::List selectedURLs = view->selectedURLs(); + KDEDesktopMimeType::executeService(selectedURLs, m_actionsVector[index]); + } + else { + KDEDesktopMimeType::executeService(m_shownURL, m_actionsVector[index]); + } +} + +void InfoSidebarPage::connectToActiveView() +{ + cancelRequest(); + + DolphinView* view = Dolphin::mainWin().activeView(); + connect(view, SIGNAL(signalRequestItemInfo(const KURL&)), + this, SLOT(requestDelayedItemInfo(const KURL&))); + connect(view, SIGNAL(signalURLChanged(const KURL&)), + this, SLOT(requestItemInfo(const KURL&))); + + m_shownURL = view->url(); + showItemInfo(); +} + +bool InfoSidebarPage::applyBookmark() +{ + KBookmarkGroup root = DolphinSettings::instance().bookmarkManager()->root(); + KBookmark bookmark = root.first(); + while (!bookmark.isNull()) { + if (m_shownURL.equals(bookmark.url(), true)) { + QString text("<b>"); + text.append(bookmark.text()); + text.append("</b>"); + m_name->setText(text); + + KIconLoader iconLoader; + QPixmap icon = iconLoader.loadIcon(bookmark.icon(), + KIcon::NoGroup, + KIcon::SizeEnormous); + m_preview->setPixmap(icon); + return true; + } + bookmark = root.next(bookmark); + } + + return false; +} + +void InfoSidebarPage::cancelRequest() +{ + m_timer->stop(); + m_pendingPreview = false; +} + +void InfoSidebarPage::createMetaInfo() +{ + // To prevent a flickering it's important to reuse available + // labels instead of deleting them and recreate them afterwards. + // The methods beginInfoLines(), addInfoLine() and endInfoLines() + // take care of this. + beginInfoLines(); + DolphinView* view = Dolphin::mainWin().activeView(); + if (!view->hasSelection()) { + KFileItem fileItem(S_IFDIR, KFileItem::Unknown, m_shownURL); + fileItem.refresh(); + + if (fileItem.isDir()) { + addInfoLine(i18n("Type:"), i18n("Directory")); + } + else { + addInfoLine(i18n("Type:"), fileItem.mimeComment()); + + QString sizeText(KIO::convertSize(fileItem.size())); + addInfoLine(i18n("Size:"), sizeText); + addInfoLine(i18n("Modified:"), fileItem.timeString()); + + const KFileMetaInfo& metaInfo = fileItem.metaInfo(); + if (metaInfo.isValid()) { + QStringList keys = metaInfo.supportedKeys(); + for (QStringList::Iterator it = keys.begin(); it != keys.end(); ++it) { + if (showMetaInfo(*it)) { + KFileMetaInfoItem metaInfoItem = metaInfo.item(*it); + addInfoLine(*it, metaInfoItem.string()); + } + } + } + } + } + endInfoLines(); +} + +void InfoSidebarPage::beginInfoLines() +{ + m_currInfoLineIdx = 0; +} + +void InfoSidebarPage::endInfoLines() +{ + if (m_currInfoLineIdx <= 0) { + return; + } + + // remove labels which have not been used + if (m_currInfoLineIdx < static_cast<int>(m_infoWidgets.count())) { + QPtrListIterator<QLabel> deleteIter(m_infoWidgets); + deleteIter += m_currInfoLineIdx; + + QWidget* widget = 0; + int removeCount = 0; + while ((widget = deleteIter.current()) != 0) { + widget->close(); + widget->deleteLater(); + ++deleteIter; + ++removeCount; + } + for (int i = 0; i < removeCount; ++i) { + m_infoWidgets.removeLast(); + } + } +} + +bool InfoSidebarPage::showMetaInfo(const QString& key) const +{ + // sorted list of keys, where it's data should be shown + static const char* keys[] = { + "Album", + "Artist", + "Author", + "Bitrate", + "Date", + "Dimensions", + "Genre", + "Length", + "Lines", + "Pages", + "Title", + "Words" + }; + + // do a binary search for the key... + int top = 0; + int bottom = sizeof(keys) / sizeof(char*) - 1; + while (top < bottom) { + const int middle = (top + bottom) / 2; + const int result = key.compare(keys[middle]); + if (result < 0) { + bottom = middle - 1; + } + else if (result > 0) { + top = middle + 1; + } + else { + return true; + } + } + + return false; +} + +void InfoSidebarPage::addInfoLine(const QString& labelText, const QString& infoText) +{ + QString labelStr("<b>"); + labelStr.append(labelText); + labelStr.append("</b> "); + + const int count = m_infoWidgets.count(); + if (m_currInfoLineIdx < count - 1) { + // reuse available labels + m_infoWidgets.at(m_currInfoLineIdx++)->setText(labelStr); + m_infoWidgets.at(m_currInfoLineIdx++)->setText(infoText); + } + else { + // no labels are available anymore, hence create 2 new ones + QLabel* label = new QLabel(labelStr, m_infoGrid); + label->setTextFormat(Qt::RichText); + label->setAlignment(Qt::AlignRight | + Qt::AlignTop); + label->show(); + m_infoWidgets.append(label); + + QLabel* info = new QLabel(infoText, m_infoGrid); + info->setTextFormat(Qt::RichText); + info->setAlignment(Qt::AlignTop | Qt::WordBreak); + info->show(); + m_infoWidgets.append(info); + + m_currInfoLineIdx += 2; + } +} + +void InfoSidebarPage::insertActions() +{ + // delete all existing action widgets + // TODO: just use children() from QObject... + QPtrListIterator<QWidget> deleteIter(m_actionWidgets); + QWidget* widget = 0; + while ((widget = deleteIter.current()) != 0) { + widget->close(); + widget->deleteLater(); + ++deleteIter; + } + + m_actionWidgets.clear(); + m_actionsVector.clear(); + + int actionsIndex = 0; + + // The algorithm for searching the available actions works on a list + // of KFileItems. If no selection is given, a temporary KFileItem + // by the given URL 'url' is created and added to the list. + KFileItem fileItem(S_IFDIR, KFileItem::Unknown, m_shownURL); + KFileItemList localList; + const KFileItemList* itemList = Dolphin::mainWin().activeView()->selectedItems(); + if ((itemList == 0) || itemList->isEmpty()) { + fileItem.refresh(); + localList.append(&fileItem); + itemList = &localList; + } + + // 'itemList' contains now all KFileItems, where an item information should be shown. + // TODO: the following algorithm is quite equal to DolphinContextMenu::insertActionItems(). + // It's open yet whether they should be merged or whether they have to work slightly different. + QStringList dirs = KGlobal::dirs()->findDirs("data", "d3lphin/servicemenus/"); + for (QStringList::ConstIterator dirIt = dirs.begin(); dirIt != dirs.end(); ++dirIt) { + QDir dir(*dirIt); + QStringList entries = dir.entryList("*.desktop", QDir::Files); + + for (QStringList::ConstIterator entryIt = entries.begin(); entryIt != entries.end(); ++entryIt) { + KSimpleConfig cfg(*dirIt + *entryIt, true); + cfg.setDesktopGroup(); + if ((cfg.hasKey("Actions") || cfg.hasKey("X-KDE-GetActionMenu")) && cfg.hasKey("ServiceTypes")) { + const QStringList types = cfg.readListEntry("ServiceTypes"); + for (QStringList::ConstIterator it = types.begin(); it != types.end(); ++it) { + // check whether the mime type is equal or whether the + // mimegroup (e. g. image/*) is supported + + bool insert = false; + if ((*it) == "all/allfiles") { + // The service type is valid for all files, but not for directories. + // Check whether the selected items only consist of files... + KFileItemListIterator mimeIt(*itemList); + KFileItem* item = 0; + insert = true; + while (insert && ((item = mimeIt.current()) != 0)) { + insert = !item->isDir(); + ++mimeIt; + } + } + + if (!insert) { + // Check whether the MIME types of all selected files match + // to the mimetype of the service action. As soon as one MIME + // type does not match, no service menu is shown at all. + KFileItemListIterator mimeIt(*itemList); + KFileItem* item = 0; + insert = true; + while (insert && ((item = mimeIt.current()) != 0)) { + const QString mimeType((*mimeIt)->mimetype()); + const QString mimeGroup(mimeType.left(mimeType.find('/'))); + + insert = (*it == mimeType) || + ((*it).right(1) == "*") && + ((*it).left((*it).find('/')) == mimeGroup); + ++mimeIt; + } + } + + if (insert) { + const QString submenuName = cfg.readEntry( "X-KDE-Submenu" ); + QPopupMenu* popup = 0; + if (!submenuName.isEmpty()) { + // create a sub menu containing all actions + popup = new QPopupMenu(); + connect(popup, SIGNAL(activated(int)), + this, SLOT(startService(int))); + + QPushButton* button = new QPushButton(submenuName, m_actionBox); + button->setFlat(true); + button->setPopup(popup); + button->show(); + m_actionWidgets.append(button); + } + + QValueList<KDEDesktopMimeType::Service> userServices = + KDEDesktopMimeType::userDefinedServices(*dirIt + *entryIt, true); + + // iterate through all actions and add them to a widget + QValueList<KDEDesktopMimeType::Service>::Iterator serviceIt; + for (serviceIt = userServices.begin(); serviceIt != userServices.end(); ++serviceIt) { + KDEDesktopMimeType::Service service = (*serviceIt); + if (popup == 0) { + ServiceButton* button = new ServiceButton(SmallIcon(service.m_strIcon), + service.m_strName, + m_actionBox, + actionsIndex); + connect(button, SIGNAL(requestServiceStart(int)), + this, SLOT(startService(int))); + m_actionWidgets.append(button); + button->show(); + } + else { + popup->insertItem(SmallIcon(service.m_strIcon), service.m_strName, actionsIndex); + } + + m_actionsVector.append(service); + ++actionsIndex; + } + } + } + } + } + } +} + +ServiceButton::ServiceButton(const QIconSet& icon, + const QString& text, + QWidget* parent, + int index) : + QPushButton(icon, text, parent), + m_hover(false), + m_index(index) +{ + setEraseColor(colorGroup().background()); + setFocusPolicy(QWidget::NoFocus); + connect(this, SIGNAL(released()), + this, SLOT(slotReleased())); +} + +ServiceButton::~ServiceButton() +{ +} + +void ServiceButton::drawButton(QPainter* painter) +{ + const int buttonWidth = width(); + const int buttonHeight = height(); + + QColor backgroundColor; + QColor foregroundColor; + if (m_hover) { + backgroundColor = KGlobalSettings::highlightColor(); + foregroundColor = KGlobalSettings::highlightedTextColor(); + } + else { + backgroundColor = colorGroup().background(); + foregroundColor = KGlobalSettings::buttonTextColor(); + } + + // draw button background + painter->setPen(NoPen); + painter->setBrush(backgroundColor); + painter->drawRect(0, 0, buttonWidth, buttonHeight); + + const int spacing = KDialog::spacingHint(); + + // draw icon + int x = spacing; + const int y = (buttonHeight - KIcon::SizeSmall) / 2; + const QIconSet* set = iconSet(); + if (set != 0) { + painter->drawPixmap(x, y, set->pixmap(QIconSet::Small, QIconSet::Normal)); + } + x += KIcon::SizeSmall + spacing; + + // draw text + painter->setPen(foregroundColor); + + const int textWidth = buttonWidth - x; + QFontMetrics fontMetrics(font()); + const bool clipped = fontMetrics.width(text()) >= textWidth; + //const int align = clipped ? Qt::AlignVCenter : Qt::AlignCenter; + painter->drawText(QRect(x, 0, textWidth, buttonHeight), Qt::AlignVCenter, text()); + + if (clipped) { + // Blend the right area of the text with the background, as the + // text is clipped. + // TODO #1: use alpha blending in Qt4 instead of drawing the text that often + // TODO #2: same code as in URLNavigatorButton::drawButton() -> provide helper class? + const int blendSteps = 16; + + QColor blendColor(backgroundColor); + const int redInc = (foregroundColor.red() - backgroundColor.red()) / blendSteps; + const int greenInc = (foregroundColor.green() - backgroundColor.green()) / blendSteps; + const int blueInc = (foregroundColor.blue() - backgroundColor.blue()) / blendSteps; + for (int i = 0; i < blendSteps; ++i) { + painter->setClipRect(QRect(x + textWidth - i, 0, 1, buttonHeight)); + painter->setPen(blendColor); + painter->drawText(QRect(x, 0, textWidth, buttonHeight), Qt::AlignVCenter, text()); + + blendColor.setRgb(blendColor.red() + redInc, + blendColor.green() + greenInc, + blendColor.blue() + blueInc); + } + } +} + +void ServiceButton::enterEvent(QEvent* event) +{ + QPushButton::enterEvent(event); + m_hover = true; + update(); +} + +void ServiceButton::leaveEvent(QEvent* event) +{ + QPushButton::leaveEvent(event); + m_hover = false; + update(); +} + +void ServiceButton::slotReleased() +{ + emit requestServiceStart(m_index); +} + |