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/*
* SPDX-FileCopyrightText: 2008 Konstantin Heil <[email protected]>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tooltipmanager.h"
#include "dolphinfilemetadatawidget.h"
#include <KIO/JobUiDelegate>
#include <KIO/PreviewJob>
#include <KConfigGroup>
#include <KJobWidgets>
#include <KSharedConfig>
#include <KToolTipWidget>
#include <KIconLoader>
#include <QApplication>
#include <QDesktopWidget>
#include <QIcon>
#include <QLayout>
#include <QStyle>
#include <QTimer>
#include <QWindow>
class IconLoaderSingleton {
public:
IconLoaderSingleton() = default;
KIconLoader self;
};
Q_GLOBAL_STATIC(IconLoaderSingleton, iconLoader)
ToolTipManager::ToolTipManager(QWidget* parent) :
QObject(parent),
m_showToolTipTimer(nullptr),
m_contentRetrievalTimer(nullptr),
m_transientParent(nullptr),
m_fileMetaDataWidget(nullptr),
m_toolTipRequested(false),
m_metaDataRequested(false),
m_appliedWaitCursor(false),
m_margin(4),
m_item(),
m_itemRect()
{
if (parent) {
m_margin = qMax(m_margin, parent->style()->pixelMetric(QStyle::PM_ToolTipLabelFrameWidth));
}
m_showToolTipTimer = new QTimer(this);
m_showToolTipTimer->setSingleShot(true);
m_showToolTipTimer->setInterval(500);
connect(m_showToolTipTimer, &QTimer::timeout, this, QOverload<>::of(&ToolTipManager::showToolTip));
m_contentRetrievalTimer = new QTimer(this);
m_contentRetrievalTimer->setSingleShot(true);
m_contentRetrievalTimer->setInterval(200);
connect(m_contentRetrievalTimer, &QTimer::timeout, this, &ToolTipManager::startContentRetrieval);
Q_ASSERT(m_contentRetrievalTimer->interval() < m_showToolTipTimer->interval());
}
ToolTipManager::~ToolTipManager()
{
}
void ToolTipManager::showToolTip(const KFileItem& item, const QRectF& itemRect, QWindow *transientParent)
{
hideToolTip();
m_itemRect = itemRect.toRect();
m_itemRect.adjust(-m_margin, -m_margin, m_margin, m_margin);
m_item = item;
m_transientParent = transientParent;
// 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_fileMetaDataWidget.reset(new DolphinFileMetaDataWidget());
connect(m_fileMetaDataWidget.data(), &DolphinFileMetaDataWidget::metaDataRequestFinished,
this, &ToolTipManager::slotMetaDataRequestFinished);
connect(m_fileMetaDataWidget.data(), &DolphinFileMetaDataWidget::urlActivated,
this, &ToolTipManager::urlActivated);
m_contentRetrievalTimer->start();
m_showToolTipTimer->start();
m_toolTipRequested = true;
Q_ASSERT(!m_metaDataRequested);
}
void ToolTipManager::hideToolTip(const HideBehavior behavior)
{
if (m_appliedWaitCursor) {
QApplication::restoreOverrideCursor();
m_appliedWaitCursor = false;
}
m_toolTipRequested = false;
m_metaDataRequested = false;
m_showToolTipTimer->stop();
m_contentRetrievalTimer->stop();
if (m_tooltipWidget) {
switch (behavior) {
case HideBehavior::Instantly:
m_tooltipWidget->hide();
break;
case HideBehavior::Later:
m_tooltipWidget->hideLater();
break;
}
}
}
void ToolTipManager::startContentRetrieval()
{
if (!m_toolTipRequested) {
return;
}
m_fileMetaDataWidget->setName(m_item.text());
// Request the retrieval of meta-data. The slot
// slotMetaDataRequestFinished() is invoked after the
// meta-data have been received.
m_metaDataRequested = true;
m_fileMetaDataWidget->setItems(KFileItemList() << m_item);
m_fileMetaDataWidget->adjustSize();
// Request a preview of the item
m_fileMetaDataWidget->setPreview(QPixmap());
const KConfigGroup globalConfig(KSharedConfig::openConfig(), "PreviewSettings");
const QStringList plugins = globalConfig.readEntry("Plugins", KIO::PreviewJob::defaultPlugins());
KIO::PreviewJob* job = new KIO::PreviewJob(KFileItemList() << m_item,
QSize(256, 256),
&plugins);
job->setIgnoreMaximumSize(m_item.isLocalFile());
if (job->uiDelegate()) {
KJobWidgets::setWindow(job, qApp->activeWindow());
}
connect(job, &KIO::PreviewJob::gotPreview,
this, &ToolTipManager::setPreviewPix);
connect(job, &KIO::PreviewJob::failed,
this, &ToolTipManager::previewFailed);
}
void ToolTipManager::setPreviewPix(const KFileItem& item,
const QPixmap& pixmap)
{
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_fileMetaDataWidget->setPreview(pixmap);
if (!m_showToolTipTimer->isActive()) {
showToolTip();
}
}
}
void ToolTipManager::previewFailed()
{
if (!m_toolTipRequested) {
return;
}
QPalette pal;
for (auto state : { QPalette::Active, QPalette::Inactive, QPalette::Disabled }) {
pal.setBrush(state, QPalette::WindowText, pal.toolTipText());
pal.setBrush(state, QPalette::Window, pal.toolTipBase());
}
iconLoader->self.setCustomPalette(pal);
const QPixmap pixmap = KDE::icon(m_item.iconName(), &iconLoader->self).pixmap(128, 128);
m_fileMetaDataWidget->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()
{
Q_ASSERT(m_toolTipRequested);
if (m_appliedWaitCursor) {
QApplication::restoreOverrideCursor();
m_appliedWaitCursor = false;
}
if (m_fileMetaDataWidget->preview().isNull() || m_metaDataRequested) {
Q_ASSERT(!m_appliedWaitCursor);
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
m_appliedWaitCursor = true;
return;
}
// Adjust the size to get a proper sizeHint()
m_fileMetaDataWidget->adjustSize();
if (!m_tooltipWidget) {
m_tooltipWidget.reset(new KToolTipWidget());
}
m_tooltipWidget->showBelow(m_itemRect, m_fileMetaDataWidget.data(), m_transientParent);
m_toolTipRequested = false;
}
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