#include "tooltipmanager.h"
#include "filemetadatatooltip.h"
-#include <kicon.h>
-#include <kio/previewjob.h>
-#include <kwindowsystem.h>
+#include <KIcon>
+#include <KIO/PreviewJob>
+#include <KSharedConfig>
#include <QApplication>
#include <QDesktopWidget>
m_view(parent),
m_dolphinModel(0),
m_proxyModel(model),
- m_prepareToolTipTimer(0),
- m_startPreviewJobTimer(0),
- m_waitOnPreviewTimer(0),
- m_showToolTipDelayedTimer(0),
+ m_showToolTipTimer(0),
+ m_contentRetrievalTimer(0),
m_fileMetaDataToolTip(0),
+ m_toolTipRequested(false),
+ m_metaDataRequested(false),
+ m_appliedWaitCursor(false),
m_item(),
- m_itemRect(),
- m_generatingPreview(false),
- m_hasDefaultIcon(false),
- m_previewPixmap()
+ m_itemRect()
{
static FileMetaDataToolTip* sharedToolTip = 0;
- if (sharedToolTip == 0) {
+ if (!sharedToolTip) {
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;
-
+ connect(m_fileMetaDataToolTip, SIGNAL(metaDataRequestFinished(KFileItemList)),
+ this, SLOT(slotMetaDataRequestFinished()));
+
m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel());
connect(parent, SIGNAL(entered(const QModelIndex&)),
this, SLOT(requestToolTip(const QModelIndex&)));
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()));
-
+ m_showToolTipTimer = new QTimer(this);
+ m_showToolTipTimer->setSingleShot(true);
+ m_showToolTipTimer->setInterval(500);
+ connect(m_showToolTipTimer, SIGNAL(timeout()), this, SLOT(showToolTip()));
+
+ m_contentRetrievalTimer = new QTimer(this);
+ m_contentRetrievalTimer->setSingleShot(true);
+ m_contentRetrievalTimer->setInterval(200);
+ connect(m_contentRetrievalTimer, SIGNAL(timeout()), this, SLOT(startContentRetrieval()));
+
+ Q_ASSERT(m_contentRetrievalTimer->interval() < m_showToolTipTimer->interval());
+
// 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()));
+ this, SLOT(hideToolTip()));
connect(parent->verticalScrollBar(), SIGNAL(valueChanged(int)),
- this, SLOT(hideTip()));
+ this, SLOT(hideToolTip()));
m_view->viewport()->installEventFilter(this);
m_view->installEventFilter(this);
{
}
-void ToolTipManager::hideTip()
+void ToolTipManager::hideToolTip()
{
- hideToolTip();
+ if (m_appliedWaitCursor) {
+ QApplication::restoreOverrideCursor();
+ m_appliedWaitCursor = false;
+ }
+
+ m_toolTipRequested = false;
+ m_metaDataRequested = false;
+ m_showToolTipTimer->stop();
+ m_contentRetrievalTimer->stop();
+
+ m_fileMetaDataToolTip->setItems(KFileItemList());
+ m_fileMetaDataToolTip->hide();
}
bool ToolTipManager::eventFilter(QObject* watched, QEvent* 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)) {
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();
+ // Only start the retrieving of the content, when the mouse has been over this
+ // item for 200 milliseconds. This prevents a lot of useless preview jobs and
+ // meta data retrieval, when passing rapidly over a lot of items.
+ m_contentRetrievalTimer->start();
+ m_showToolTipTimer->start();
+ m_toolTipRequested = true;
+ Q_ASSERT(!m_metaDataRequested);
}
}
-void ToolTipManager::hideToolTip()
+void ToolTipManager::startContentRetrieval()
{
- m_prepareToolTipTimer->stop();
- m_startPreviewJobTimer->stop();
- m_waitOnPreviewTimer->stop();
- m_showToolTipDelayedTimer->stop();
+ if (!m_toolTipRequested) {
+ return;
+ }
- m_fileMetaDataToolTip->hide();
-}
+ m_fileMetaDataToolTip->setName(m_item.text());
-void ToolTipManager::prepareToolTip()
-{
- if (m_generatingPreview) {
- m_waitOnPreviewTimer->start();
- }
+ // Request the retrieval of meta-data. The slot
+ // slotMetaDataRequestFinished() is invoked after the
+ // meta-data have been received.
+ m_metaDataRequested = true;
+ m_fileMetaDataToolTip->setItems(KFileItemList() << m_item);
- 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;
- }
-}
+ // Request a preview of the item
+ m_fileMetaDataToolTip->setPreview(QPixmap());
-void ToolTipManager::startPreviewJob()
-{
- m_generatingPreview = true;
- KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << m_item, 256, 256);
+ KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << m_item, QSize(256, 256));
connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
this, SLOT(setPreviewPix(const KFileItem&, const QPixmap&)));
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
+ if (!m_toolTipRequested || (m_item.url() != item.url())) {
+ // No tooltip is requested anymore or an old preview has been received
+ return;
+ }
+
+ if (pixmap.isNull()) {
previewFailed();
} else {
- m_previewPixmap = pixmap;
- m_generatingPreview = false;
+ m_fileMetaDataToolTip->setPreview(pixmap);
+ if (!m_showToolTipTimer->isActive()) {
+ showToolTip();
+ }
}
}
void ToolTipManager::previewFailed()
{
- m_generatingPreview = false;
+ if (!m_toolTipRequested) {
+ return;
+ }
+
+ const QPixmap pixmap = KIcon(m_item.iconName()).pixmap(128, 128);
+ m_fileMetaDataToolTip->setPreview(pixmap);
+ if (!m_showToolTipTimer->isActive()) {
+ showToolTip();
+ }
+}
+
+void ToolTipManager::slotMetaDataRequestFinished()
+{
+ if (!m_toolTipRequested) {
+ return;
+ }
+
+ m_metaDataRequested = false;
+ if (!m_showToolTipTimer->isActive()) {
+ showToolTip();
+ }
}
void ToolTipManager::showToolTip()
{
- const QRect desktop = QApplication::desktop()->screenGeometry(m_itemRect.bottomRight());
- const QSize size = m_fileMetaDataToolTip->sizeHint();
-
+ Q_ASSERT(m_toolTipRequested);
+ if (m_appliedWaitCursor) {
+ QApplication::restoreOverrideCursor();
+ m_appliedWaitCursor = false;
+ }
+
+ if (QApplication::mouseButtons() & Qt::LeftButton) {
+ return;
+ }
+
+ if (m_fileMetaDataToolTip->preview().isNull() || m_metaDataRequested) {
+ Q_ASSERT(!m_appliedWaitCursor);
+ QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
+ m_appliedWaitCursor = true;
+ return;
+ }
+
+ const QRect screen = QApplication::desktop()->screenGeometry(QCursor::pos());
+
+ // Restrict tooltip size to current screen size when needed.
+ // Because layout controlling widget doesn't respect widget's maximumSize property
+ // (correct me if I'm wrong), we need to let layout do its work, then manually change
+ // geometry if resulting widget doesn't fit the screen.
+
+ // Step #1 - make sizeHint return calculated tooltip size
+ m_fileMetaDataToolTip->layout()->setSizeConstraint(QLayout::SetFixedSize);
+ m_fileMetaDataToolTip->adjustSize();
+ QSize size = m_fileMetaDataToolTip->sizeHint();
+
+ // Step #2 - correct tooltip size when needed
+ if (size.width() > screen.width()) {
+ size.setWidth(screen.width());
+ }
+ if (size.height() > screen.height()) {
+ size.setHeight(screen.height());
+ }
+
// 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:
+ // 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());
+ const bool hasRoomToLeft = (m_itemRect.left() - size.width() >= screen.left());
+ const bool hasRoomToRight = (m_itemRect.right() + size.width() <= screen.right());
+ const bool hasRoomAbove = (m_itemRect.top() - size.height() >= screen.top());
+ const bool hasRoomBelow = (m_itemRect.bottom() + size.height() <= screen.bottom());
if (!hasRoomAbove && !hasRoomBelow && !hasRoomToLeft && !hasRoomToRight) {
return;
}
-
- int x = 0;
- int y = 0;
+
+ int x, y;
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 (x + size.width() >= screen.right()) {
+ x = screen.right() - size.width() + 1;
}
if (hasRoomBelow) {
y = m_itemRect.bottom() + 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();
+ y = screen.bottom() - size.height() + 1;
}
-
- 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);
+ // Step #3 - Alter tooltip geometry
+ m_fileMetaDataToolTip->setFixedSize(size);
+ m_fileMetaDataToolTip->layout()->setSizeConstraint(QLayout::SetNoConstraint);
+ m_fileMetaDataToolTip->setGeometry(x, y, size.width(), size.height());
+ m_fileMetaDataToolTip->show();
- // 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()
+ m_toolTipRequested = false;
}
#include "tooltipmanager.moc"
projects / dolphin.git / blobdiff