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Delete the tooltip window while it's hidden, and recreate it when shown.

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This works around an X bug which can cause plasma tooltips to make "holes" in windows under certain conditions.
BUG:249232

svn path=/trunk/KDE/kdelibs/; revision=1178415
This commit is contained in:
Anthony Bryant 2010-09-23 01:04:45 +00:00
parent 4502af56ad
commit 331014c047
1 changed files with 33 additions and 14 deletions
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47
tooltipmanager.cpp
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@ -60,7 +60,7 @@ public :
currentWidget(0),
showTimer(new QTimer(manager)),
hideTimer(new QTimer(manager)),
tipWidget(new ToolTip(0)),
tipWidget(0),
state(ToolTipManager::Activated),
isShown(false),
delayedHide(false),
@ -86,6 +86,8 @@ public :
void clearTips();
void doDelayedHide();
void toolTipHovered(bool);
void createTipWidget();
void hideTipWidget();
ToolTipManager *q;
QGraphicsWidget *currentWidget;
@ -125,12 +127,6 @@ ToolTipManager::ToolTipManager(QObject *parent)
d->hideTimer->setSingleShot(true);
connect(d->hideTimer, SIGNAL(timeout()), SLOT(resetShownState()));
connect(d->tipWidget, SIGNAL(activateWindowByWId(WId,Qt::MouseButtons,Qt::KeyboardModifiers,QPoint)),
this, SIGNAL(windowPreviewActivated(WId,Qt::MouseButtons,Qt::KeyboardModifiers,QPoint)));
connect(d->tipWidget, SIGNAL(linkActivated(QString,Qt::MouseButtons,Qt::KeyboardModifiers,QPoint)),
this, SIGNAL(linkActivated(QString,Qt::MouseButtons,Qt::KeyboardModifiers,QPoint)));
connect(d->tipWidget, SIGNAL(hovered(bool)), this, SLOT(toolTipHovered(bool)));
}
ToolTipManager::~ToolTipManager()
@ -167,7 +163,7 @@ void ToolTipManager::show(QGraphicsWidget *widget)
bool ToolTipManager::isVisible(QGraphicsWidget *widget) const
{
return d->currentWidget == widget && d->tipWidget->isVisible();
return d->currentWidget == widget && d->tipWidget && d->tipWidget->isVisible();
}
void ToolTipManagerPrivate::doDelayedHide()
@ -192,7 +188,7 @@ void ToolTipManager::hide(QGraphicsWidget *widget)
d->currentWidget = 0;
d->showTimer->stop(); // stop the timer to show the tooltip
d->delayedHide = false;
d->tipWidget->hide();
d->hideTipWidget();
}
void ToolTipManager::registerWidget(QGraphicsWidget *widget)
@ -226,7 +222,7 @@ void ToolTipManager::setContent(QGraphicsWidget *widget, const ToolTipContent &d
registerWidget(widget);
d->tooltips.insert(widget, data);
if (d->currentWidget == widget) {
if (d->currentWidget == widget && d->tipWidget && d->tipWidget->isVisible()) {
if (data.isEmpty()) {
hide(widget);
} else {
@ -278,6 +274,28 @@ ToolTipManager::State ToolTipManager::state() const
return d->state;
}
void ToolTipManagerPrivate::createTipWidget()
{
if (tipWidget) {
return;
}
tipWidget = new ToolTip(0);
QObject::connect(tipWidget, SIGNAL(activateWindowByWId(WId,Qt::MouseButtons,Qt::KeyboardModifiers,QPoint)),
q, SIGNAL(windowPreviewActivated(WId,Qt::MouseButtons,Qt::KeyboardModifiers,QPoint)));
QObject::connect(tipWidget, SIGNAL(linkActivated(QString,Qt::MouseButtons,Qt::KeyboardModifiers,QPoint)),
q, SIGNAL(linkActivated(QString,Qt::MouseButtons,Qt::KeyboardModifiers,QPoint)));
QObject::connect(tipWidget, SIGNAL(hovered(bool)), q, SLOT(toolTipHovered(bool)));
}
void ToolTipManagerPrivate::hideTipWidget()
{
if (tipWidget) {
tipWidget->hide();
delete tipWidget;
tipWidget = 0;
}
}
void ToolTipManagerPrivate::onWidgetDestroyed(QObject *object)
{
if (!object) {
@ -300,8 +318,7 @@ void ToolTipManagerPrivate::removeWidget(QGraphicsWidget *w, bool canSafelyAcces
if (currentWidget == w && currentWidget) {
currentWidget = 0;
showTimer->stop(); // stop the timer to show the tooltip
tipWidget->setContent(0, ToolTipContent());
tipWidget->hide();
hideTipWidget();
delayedHide = false;
}
@ -320,12 +337,12 @@ void ToolTipManagerPrivate::clearTips()
void ToolTipManagerPrivate::resetShownState()
{
if (currentWidget) {
if (!tipWidget->isVisible() || delayedHide) {
if (!tipWidget || !tipWidget->isVisible() || delayedHide) {
//One might have moused out and back in again
delayedHide = false;
isShown = false;
currentWidget = 0;
tipWidget->hide();
hideTipWidget();
}
}
}
@ -363,6 +380,8 @@ void ToolTipManagerPrivate::showToolTip()
return;
}
createTipWidget();
Containment *c = dynamic_cast<Containment *>(currentWidget->topLevelItem());
//kDebug() << "about to show" << (QObject*)c;
if (c) {