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* ensure we only ever call the about to show method once

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* attempt to tip if the widget is registered, even if it has no tip associated with it

this allows for 100% on-demand tips; important as some of our tips are expensive

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=862469
This commit is contained in:
Aaron J. Seigo 2008-09-18 21:55:09 +00:00
parent 832782fa73
commit 15da8e1555
1 changed files with 57 additions and 35 deletions
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92
tooltipmanager.cpp
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@ -54,11 +54,11 @@ class ToolTipManagerPrivate
{
public :
ToolTipManagerPrivate()
: currentWidget(0)
, isShown(false)
, delayedHide(false)
, showTimer(0)
, hideTimer(0)
: currentWidget(0),
showTimer(0),
hideTimer(0),
isShown(false),
delayedHide(false)
{
}
@ -81,11 +81,11 @@ public :
QGraphicsWidget *currentWidget;
bool isShown;
bool delayedHide;
QTimer *showTimer;
QTimer *hideTimer;
QHash<QGraphicsWidget *, ToolTip *> tooltips;
bool isShown : 1;
bool delayedHide : 1;
};
//TOOLTIP IMPLEMENTATION
@ -137,33 +137,36 @@ ToolTipManager::~ToolTipManager()
void ToolTipManager::showToolTip(QGraphicsWidget *widget)
{
ToolTip *tooltip = d->tooltips.value(widget);
if (tooltip) {
if (d->currentWidget) {
hideToolTip(d->currentWidget);
}
d->hideTimer->stop();
d->delayedHide = false;
d->showTimer->stop();
d->currentWidget = widget;
if (d->isShown) {
// small delay to prevent unnecessary showing when the mouse is moving quickly across items
// which can be too much for less powerful CPUs to keep up with
d->showTimer->start(200);
} else {
d->showTimer->start(500);
}
}
if (!d->tooltips.contains(widget)) {
return;
}
if (d->currentWidget) {
hideToolTip(d->currentWidget);
}
d->hideTimer->stop();
d->delayedHide = false;
d->showTimer->stop();
d->currentWidget = widget;
if (d->isShown) {
// small delay to prevent unnecessary showing when the mouse is moving quickly across items
// which can be too much for less powerful CPUs to keep up with
d->showTimer->start(200);
} else {
d->showTimer->start(500);
}
}
bool ToolTipManager::isWidgetToolTipDisplayed(QGraphicsWidget *widget)
{
ToolTip *tooltip = d->tooltips.value(widget);
if (tooltip) {
return tooltip->isVisible();
} else {
return false;
}
ToolTip *tooltip = d->tooltips.value(widget);
if (tooltip) {
return tooltip->isVisible();
} else {
return false;
}
}
void ToolTipManager::delayedHideToolTip()
@ -205,7 +208,9 @@ void ToolTipManager::unregisterWidget(QGraphicsWidget *widget)
widget->removeEventFilter(this);
ToolTip *tooltip = d->tooltips.take(widget);
delete tooltip;
if (tooltip) {
tooltip->deleteLater();
}
}
void ToolTipManager::setToolTipContent(QGraphicsWidget *widget, const ToolTipContent &data)
@ -215,7 +220,9 @@ void ToolTipManager::setToolTipContent(QGraphicsWidget *widget, const ToolTipCon
ToolTip *tooltip = d->tooltips.value(widget);
if (data.isEmpty()) {
delete tooltip;
if (tooltip) {
tooltip->deleteLater();
}
d->tooltips.insert(widget, 0);
return;
}
@ -299,7 +306,7 @@ void ToolTipManagerPrivate::onWidgetDestroyed(QObject *object)
if (tooltip) {
//kDebug() << "deleting the tooltip!";
tooltip->hide();
delete tooltip;
tooltip->deleteLater();
}
return;
}
@ -327,9 +334,24 @@ void ToolTipManagerPrivate::showToolTip()
}
ToolTip *tooltip = tooltips.value(currentWidget);
if (tooltip && tooltip->isActivated()) {
bool justCreated = false;
if (!tooltip) {
// give the object a chance for delayed loading of the tip
QMetaObject::invokeMethod(currentWidget, "toolTipAboutToShow");
tooltip = tooltips.value(currentWidget);
if (tooltip) {
justCreated = true;
} else {
currentWidget = 0;
return;
}
}
if (tooltip->isActivated()) {
tooltip->setVisible(false);
tooltip->prepareShowing();
//kDebug() << "about to show" << justCreated;
tooltip->prepareShowing(!justCreated);
tooltip->move(popupPosition(currentWidget, tooltip->size()));
isShown = true; //ToolTip is visible
tooltip->setVisible(true);