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Diffstat (limited to 'src/tooltips/tooltipmanager.cpp')
| -rw-r--r-- | src/tooltips/tooltipmanager.cpp | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/src/tooltips/tooltipmanager.cpp b/src/tooltips/tooltipmanager.cpp deleted file mode 100644 index 726aed9f3..000000000 --- a/src/tooltips/tooltipmanager.cpp +++ /dev/null @@ -1,277 +0,0 @@ -/******************************************************************************* - * Copyright (C) 2008 by Konstantin Heil <[email protected]> * - * * - * 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 "tooltipmanager.h" - -#include "filemetadatatooltip.h" -#include <kicon.h> -#include <kio/previewjob.h> -#include <kwindowsystem.h> - -#include <QApplication> -#include <QDesktopWidget> -#include <QScrollArea> -#include <QScrollBar> -#include <QTimer> - -#include <views/dolphinmodel.h> -#include <views/dolphinsortfilterproxymodel.h> - -ToolTipManager::ToolTipManager(QAbstractItemView* parent, - DolphinSortFilterProxyModel* model) : - QObject(parent), - m_view(parent), - m_dolphinModel(0), - m_proxyModel(model), - m_prepareToolTipTimer(0), - m_startPreviewJobTimer(0), - m_waitOnPreviewTimer(0), - m_showToolTipDelayedTimer(0), - m_fileMetaDataToolTip(0), - m_item(), - m_itemRect(), - m_generatingPreview(false), - m_hasDefaultIcon(false), - m_previewPixmap() -{ - static FileMetaDataToolTip* sharedToolTip = 0; - if (sharedToolTip == 0) { - sharedToolTip = new FileMetaDataToolTip(); - // TODO: Using K_GLOBAL_STATIC would be preferable to maintain the - // instance, but the cleanup of KFileMetaDataWidget at this stage does - // not work. - } - m_fileMetaDataToolTip = sharedToolTip; - - m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel()); - connect(parent, SIGNAL(entered(const QModelIndex&)), - this, SLOT(requestToolTip(const QModelIndex&))); - connect(parent, SIGNAL(viewportEntered()), - this, SLOT(hideToolTip())); - - // Initialize timers - m_prepareToolTipTimer = new QTimer(this); - m_prepareToolTipTimer->setSingleShot(true); - m_prepareToolTipTimer->setInterval(500); - connect(m_prepareToolTipTimer, SIGNAL(timeout()), this, SLOT(prepareToolTip())); - - m_startPreviewJobTimer = new QTimer(this); - m_startPreviewJobTimer->setSingleShot(true); - m_startPreviewJobTimer->setInterval(200); - connect(m_startPreviewJobTimer, SIGNAL(timeout()), this, SLOT(startPreviewJob())); - - m_waitOnPreviewTimer = new QTimer(this); - m_waitOnPreviewTimer->setSingleShot(true); - m_waitOnPreviewTimer->setInterval(250); - connect(m_waitOnPreviewTimer, SIGNAL(timeout()), this, SLOT(prepareToolTip())); - - m_showToolTipDelayedTimer = new QTimer(this); - m_showToolTipDelayedTimer->setSingleShot(true); - m_showToolTipDelayedTimer->setInterval(100); - connect(m_showToolTipDelayedTimer, SIGNAL(timeout()), this, SLOT(showToolTip())); - - // When the mousewheel is used, the items don't get a hovered indication - // (Qt-issue #200665). To assure that the tooltip still gets hidden, - // the scrollbars are observed. - connect(parent->horizontalScrollBar(), SIGNAL(valueChanged(int)), - this, SLOT(hideTip())); - connect(parent->verticalScrollBar(), SIGNAL(valueChanged(int)), - this, SLOT(hideTip())); - - m_view->viewport()->installEventFilter(this); - m_view->installEventFilter(this); -} - -ToolTipManager::~ToolTipManager() -{ -} - -void ToolTipManager::hideTip() -{ - hideToolTip(); -} - -bool ToolTipManager::eventFilter(QObject* watched, QEvent* event) -{ - if (watched == m_view->viewport()) { - switch (event->type()) { - case QEvent::Leave: - case QEvent::MouseButtonPress: - hideToolTip(); - break; - default: - break; - } - } else if ((watched == m_view) && (event->type() == QEvent::KeyPress)) { - hideToolTip(); - } - - return QObject::eventFilter(watched, event); -} - -void ToolTipManager::requestToolTip(const QModelIndex& index) -{ - hideToolTip(); - - // Only request a tooltip for the name column and when no selection or - // drag & drop operation is done (indicated by the left mouse button) - if ((index.column() == DolphinModel::Name) && !(QApplication::mouseButtons() & Qt::LeftButton)) { - m_itemRect = m_view->visualRect(index); - const QPoint pos = m_view->viewport()->mapToGlobal(m_itemRect.topLeft()); - m_itemRect.moveTo(pos); - - const QModelIndex dirIndex = m_proxyModel->mapToSource(index); - m_item = m_dolphinModel->itemForIndex(dirIndex); - - // Only start the previewJob when the mouse has been over this item for 200 milliseconds. - // This prevents a lot of useless preview jobs when passing rapidly over a lot of items. - m_startPreviewJobTimer->start(); - m_previewPixmap = QPixmap(); - m_hasDefaultIcon = false; - - m_prepareToolTipTimer->start(); - } -} - -void ToolTipManager::hideToolTip() -{ - m_prepareToolTipTimer->stop(); - m_startPreviewJobTimer->stop(); - m_waitOnPreviewTimer->stop(); - m_showToolTipDelayedTimer->stop(); - - m_fileMetaDataToolTip->hide(); -} - -void ToolTipManager::prepareToolTip() -{ - if (m_generatingPreview) { - m_waitOnPreviewTimer->start(); - } - - if (!m_previewPixmap.isNull()) { - showToolTipDelayed(m_previewPixmap); - } else if (!m_hasDefaultIcon) { - const QPixmap image(KIcon(m_item.iconName()).pixmap(128, 128)); - showToolTipDelayed(image); - m_hasDefaultIcon = true; - } -} - -void ToolTipManager::startPreviewJob() -{ - m_generatingPreview = true; - KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << m_item, 256, 256); - - connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)), - this, SLOT(setPreviewPix(const KFileItem&, const QPixmap&))); - connect(job, SIGNAL(failed(const KFileItem&)), - this, SLOT(previewFailed())); -} - - -void ToolTipManager::setPreviewPix(const KFileItem& item, - const QPixmap& pixmap) -{ - if ((m_item.url() != item.url()) || pixmap.isNull()) { - // An old preview or an invalid preview has been received - previewFailed(); - } else { - m_previewPixmap = pixmap; - m_generatingPreview = false; - } -} - -void ToolTipManager::previewFailed() -{ - m_generatingPreview = false; -} - -void ToolTipManager::showToolTip() -{ - const QRect desktop = QApplication::desktop()->screenGeometry(m_itemRect.bottomRight()); - const QSize size = m_fileMetaDataToolTip->sizeHint(); - - // m_itemRect defines the area of the item, where the tooltip should be - // shown. Per default the tooltip is shown in the bottom right corner. - // If the tooltip content exceeds the desktop borders, it must be assured that: - // - the content is fully visible - // - the content is not drawn inside m_itemRect - const bool hasRoomToLeft = (m_itemRect.left() - size.width() >= desktop.left()); - const bool hasRoomToRight = (m_itemRect.right() + size.width() <= desktop.right()); - const bool hasRoomAbove = (m_itemRect.top() - size.height() >= desktop.top()); - const bool hasRoomBelow = (m_itemRect.bottom() + size.height() <= desktop.bottom()); - if (!hasRoomAbove && !hasRoomBelow && !hasRoomToLeft && !hasRoomToRight) { - return; - } - - int x = 0; - int y = 0; - if (hasRoomBelow || hasRoomAbove) { - x = QCursor::pos().x() + 16; // TODO: use mouse pointer width instead of the magic value of 16 - if (x + size.width() >= desktop.right()) { - x = desktop.right() - size.width(); - } - if (hasRoomBelow) { - y = m_itemRect.bottom() + 1; - } else { - y = m_itemRect.top() - size.height(); - } - } else { - Q_ASSERT(hasRoomToLeft || hasRoomToRight); - if (hasRoomToRight) { - x = m_itemRect.right() + 1; - } else { - x = m_itemRect.left() - size.width(); - } - - // Put the tooltip at the bottom of the screen. The x-coordinate has already - // been adjusted, so that no overlapping with m_itemRect occurs. - y = desktop.bottom() - size.height(); - } - - m_fileMetaDataToolTip->move(qMax(x, 0), qMax(y, 0)); - m_fileMetaDataToolTip->show(); -} - -void ToolTipManager::showToolTipDelayed(const QPixmap& pixmap) -{ - if (QApplication::mouseButtons() & Qt::LeftButton) { - return; - } - - m_fileMetaDataToolTip->setPreview(pixmap); - m_fileMetaDataToolTip->setName(m_item.text()); - m_fileMetaDataToolTip->setItems(KFileItemList() << m_item); - - // Because one tooltip instance is reused, the size hint always depends on the previous - // content (QWidgets don't update their layout geometry if they are invisible). To - // assure having a consistent size without relayout flickering, the tooltip is opened - // on an invisible position first. This gives the layout system some time to asynchronously - // update the content. Sadly this only works with compositing enabled. - if (KWindowSystem::compositingActive()) { - const QRect desktop = QApplication::desktop()->screenGeometry(m_itemRect.bottomRight()); - m_fileMetaDataToolTip->move(desktop.bottomRight()); - m_fileMetaDataToolTip->show(); - } - - m_showToolTipDelayedTimer->start(); // Calls ToolTipManager::showToolTip() -} - -#include "tooltipmanager.moc" |