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New ToolTip manager that create tool tips easier than before

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svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=833272
This commit is contained in:
Alexis Ménard 2008-07-16 15:17:44 +00:00
parent 568ad346d5
commit 0628f7dcb3
8 changed files with 789 additions and 3 deletions
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5
CMakeLists.txt
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@ -58,6 +58,8 @@ set(plasma_LIB_SRCS
svg.cpp
theme.cpp
toolbox.cpp
tooltipmanager.cpp
tooltip.cpp
uiloader.cpp
version.cpp
view.cpp
@ -140,7 +142,9 @@ set(plasma_LIB_INCLUDES
servicejob.h
svg.h
theme.h
tooltipmanager.h
uiloader.h
tooltipmanager.h
version.h
view.h)
@ -225,6 +229,7 @@ includes/ServiceJob
includes/SignalPlotter
includes/Svg
includes/TextEdit
includes/ToolTipManager
includes/Theme
includes/UiLoader
includes/View

50
applet.cpp
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@ -27,7 +27,6 @@
#include <QAction>
#include <QApplication>
#include <QDesktopWidget>
#include <QEvent>
#include <QFile>
#include <QGraphicsGridLayout>
@ -76,6 +75,7 @@
#include "plasma/view.h"
#include "plasma/widgets/label.h"
#include "plasma/widgets/pushbutton.h"
#include "plasma/tooltipmanager.h"
//#define DYNAMIC_SHADOWS
namespace Plasma
@ -434,7 +434,8 @@ QRect Applet::mapToView(const QGraphicsView *view, const QRectF &rect) const
QPoint Applet::popupPosition(const QSize &s) const
{
QGraphicsView *v = view();
return ToolTipManager::popupPosition(this,s);
/*QGraphicsView *v = view();
Q_ASSERT(v);
QPoint pos = v->mapFromScene(scenePos());
@ -482,7 +483,7 @@ QPoint Applet::popupPosition(const QSize &s) const
}
pos.rx() = qMax(0, pos.rx());
return pos;
return pos;*/
}
void Applet::updateConstraints(Plasma::Constraints constraints)
@ -1430,6 +1431,49 @@ QVariant Applet::itemChange(GraphicsItemChange change, const QVariant &value)
return QGraphicsWidget::itemChange(change, value);
}
bool Applet::sceneEvent(QEvent *event)
{
switch (event->type()) {
case QEvent::GraphicsSceneHoverMove:
// If the tooltip isn't visible, run through showing the tooltip again
// so that it only becomes visible after a stationary hover
if (Plasma::ToolTipManager::self()->isVisible(this)) {
break;
}
case QEvent::GraphicsSceneHoverEnter:
{
// Check that there is a tooltip to show
if (!Plasma::ToolTipManager::self()->hasToolTip(this)) {
break;
}
// If the mouse is in the widget's area at the time that it is being
// created the widget can receive a hover event before it is fully
// initialized, in which case view() will return 0.
QGraphicsView *parentView = view();
if (parentView) {
Plasma::ToolTipManager::self()->showToolTip(this);
}
break;
}
case QEvent::GraphicsSceneHoverLeave:
Plasma::ToolTipManager::self()->delayedHideToolTip();
break;
case QEvent::GraphicsSceneMousePress:
case QEvent::GraphicsSceneWheel:
Plasma::ToolTipManager::self()->hideToolTip(this);
default:
break;
}
return QGraphicsWidget::sceneEvent(event);
}
QPainterPath Applet::shape() const
{
if (d->script) {

5
applet.h
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@ -728,6 +728,11 @@ class PLASMA_EXPORT Applet : public QGraphicsWidget
*/
QVariant itemChange(GraphicsItemChange change, const QVariant &value);
/**
* Reimplemented from QGraphicsItem
*/
bool sceneEvent(QEvent *event);
/**
* Reimplemented from QGraphicsItem
*/

1
includes/ToolTipManager Normal file
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@ -0,0 +1 @@
#include "../../plasma/tooltipmanager.h"

268
tooltip.cpp Normal file
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@ -0,0 +1,268 @@
/*
* Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com>
* Copyright (C) 2008 by Alexis Ménard <darktears31@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, 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 Library 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 "tooltip_p.h"
#include <QBitmap>
#include <QHBoxLayout>
#include <QLabel>
#include <QMouseEvent>
#include <QPixmap>
#include <QTimer>
#include <QGraphicsView>
#ifdef Q_WS_X11
#include <QX11Info>
#endif
#include <KDebug>
#include <KGlobal>
#include <KWindowSystem>
#include <plasma/theme.h>
#include <plasma/panelsvg.h>
#ifdef Q_WS_X11
#include <X11/Xlib.h>
#include <fixx11h.h>
#endif
#include "plasma/plasma.h"
namespace Plasma {
class ToolTipPrivate
{
public:
ToolTipPrivate()
: label(0)
, imageLabel(0)
, preview(0)
, windowToPreview(0)
{ }
QLabel *label;
QLabel *imageLabel;
WindowPreview *preview;
WId windowToPreview;
PanelSvg *background;
};
void ToolTip::showEvent(QShowEvent *e)
{
QWidget::showEvent(e);
d->preview->setInfo();
}
void ToolTip::mouseReleaseEvent(QMouseEvent* event)
{
if (rect().contains(event->pos())) {
hide();
}
}
ToolTip::ToolTip()
: QWidget(0)
, d( new ToolTipPrivate )
{
setWindowFlags(Qt::ToolTip);
QGridLayout *l = new QGridLayout;
d->preview = new WindowPreview;
d->label = new QLabel;
d->label->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
d->label->setWordWrap(true);
d->imageLabel = new QLabel;
d->imageLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
d->background = new PanelSvg(this);
connect(d->background, SIGNAL(repaintNeeded()), this, SLOT(update()));
l->addWidget(d->preview, 0, 0, 1, 2);
l->addWidget(d->imageLabel, 1, 0);
l->addWidget(d->label, 1, 1);
setLayout(l);
}
ToolTip::~ToolTip()
{
delete d;
}
void ToolTip::setData(const ToolTipManager::ToolTipData &data)
{
//reset our size
d->label->setText("<qt><b>" + data.mainText + "</b><br>" + data.subText + "</qt>");
d->imageLabel->setPixmap(data.image);
d->windowToPreview = data.windowToPreview;
d->preview->setWindowId( d->windowToPreview );
if (isVisible()) {
resize(sizeHint());
}
}
void ToolTip::prepareShowing()
{
if( d->windowToPreview != 0 ) {
// show/hide the preview area
d->preview->show();
kDebug()<<"Show Preview of window";
} else {
d->preview->hide();
}
layout()->activate();
resize(sizeHint());
if (isVisible()) {
d->preview->setInfo();
} else {
show();
}
}
void ToolTip::resizeEvent(QResizeEvent *e)
{
QWidget::resizeEvent(e);
d->background->resizePanel(size());
setMask(d->background->mask());
}
void ToolTip::paintEvent(QPaintEvent *e)
{
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
painter.setClipRect(e->rect());
painter.setCompositionMode(QPainter::CompositionMode_Source );
painter.fillRect(rect(), Qt::transparent);
d->background->paintPanel(&painter, rect());
}
void ToolTip::updateTheme()
{
d->background->setImagePath("widgets/tooltip");
d->background->setEnabledBorders(PanelSvg::AllBorders);
const int topHeight = d->background->marginSize(Plasma::TopMargin);
const int leftWidth = d->background->marginSize(Plasma::LeftMargin);
const int rightWidth = d->background->marginSize(Plasma::RightMargin);
const int bottomHeight = d->background->marginSize(Plasma::BottomMargin);
setContentsMargins(leftWidth, topHeight, rightWidth, bottomHeight);
// Make the tooltip use Plasma's colorscheme
QPalette plasmaPalette = QPalette();
plasmaPalette.setColor(QPalette::Window, Plasma::Theme::defaultTheme()->color(Plasma::Theme::BackgroundColor));
plasmaPalette.setColor(QPalette::WindowText, Plasma::Theme::defaultTheme()->color(Plasma::Theme::TextColor));
setAutoFillBackground(true);
setPalette(plasmaPalette);
}
// A widget which reserves area for window preview and sets hints on the toplevel
// tooltip widget that tells KWin to render the preview in this area. This depends
// on KWin's TaskbarThumbnail compositing effect (which is here detected).
void WindowPreview::setWindowId(WId w)
{
if (!previewsAvailable()) {
id = 0;
return;
}
id = w;
readWindowSize();
}
bool WindowPreview::previewsAvailable() const
{
if (!KWindowSystem::compositingActive()) {
return false;
}
#ifdef Q_WS_X11
// hackish way to find out if KWin has the effect enabled,
// TODO provide proper support
Display* dpy = QX11Info::display();
Atom atom = XInternAtom(dpy, "_KDE_WINDOW_PREVIEW", False);
int cnt;
Atom* list = XListProperties(dpy, DefaultRootWindow( dpy ), &cnt);
if (list != NULL) {
bool ret = ( qFind(list, list + cnt, atom) != list + cnt );
XFree(list);
return ret;
}
#endif
return false;
}
QSize WindowPreview::sizeHint() const
{
if (id == 0) {
return QSize();
}
if (!windowSize.isValid()) {
readWindowSize();
}
QSize s = windowSize;
s.scale(200, 150, Qt::KeepAspectRatio);
return s;
}
void WindowPreview::readWindowSize() const
{
#ifdef Q_WS_X11
Window r;
int x, y;
unsigned int w, h, b, d;
if (XGetGeometry(QX11Info::display(), id, &r, &x, &y, &w, &h, &b, &d)) {
windowSize = QSize( w, h );
} else {
windowSize = QSize();
}
kDebug()<<windowSize;
#else
windowSize = QSize();
#endif
}
void WindowPreview::setInfo()
{
#ifdef Q_WS_X11
Display *dpy = QX11Info::display();
Atom atom = XInternAtom(dpy, "_KDE_WINDOW_PREVIEW", False);
if (id == 0) {
XDeleteProperty(dpy, parentWidget()->winId(), atom);
return;
}
if (!windowSize.isValid()) {
readWindowSize();
}
if (!windowSize.isValid()) {
XDeleteProperty(dpy, parentWidget()->winId(), atom);
return;
}
Q_ASSERT( parentWidget()->isWindow()); // parent must be toplevel
long data[] = { 1, 5, id, x(), y(), width(), height() };
XChangeProperty(dpy, parentWidget()->winId(), atom, atom, 32, PropModeReplace,
reinterpret_cast< unsigned char* >( data ), sizeof( data ) / sizeof( data[ 0 ] ));
#endif
}
}
#include "tooltip_p.moc"

80
tooltip_p.h Normal file
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@ -0,0 +1,80 @@
/*
* Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com>
* Copyright (C) 2008 by Alexis Ménard <darktears31@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, 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 Library 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.
*/
#ifndef PLASMA_TOOLTIP_P_H
#define PLASMA_TOOLTIP_P_H
#include <QWidget> // base class
#include <QPixmap> // stack allocated
#include <QPoint> // stack allocated
#include <QString> // stack allocated
#include <QGraphicsWidget>
#include <plasma/tooltipmanager.h> //ToolTipData struct
namespace Plasma {
class ToolTipPrivate;
/**
@author Dan Meltzer
* A Singleton tooltip. Before calling show it is necessary to
* call setLocation and setData
*/
class ToolTip : public QWidget
{
Q_OBJECT
public:
ToolTip();
~ToolTip();
void updateTheme();
void setData(const ToolTipManager::ToolTipData &data);
void prepareShowing();
protected:
void showEvent(QShowEvent *);
void mouseReleaseEvent(QMouseEvent *);
void resizeEvent(QResizeEvent *);
void paintEvent(QPaintEvent *);
private:
ToolTipPrivate *const d;
};
class WindowPreview : public QWidget
{
Q_OBJECT
public:
void setWindowId(WId w);
void setInfo();
virtual QSize sizeHint() const;
bool previewsAvailable() const;
private:
void readWindowSize() const;
WId id;
mutable QSize windowSize;
};
}
#endif

294
tooltipmanager.cpp Normal file
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@ -0,0 +1,294 @@
/**************************************************************************
* Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com> *
* Copyright (C) 2008 by Alexis Ménard <darktears31@gmail.com> *
* *
* 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"
//Qt
#include <QLabel>
#include <QTimer>
#include <QGridLayout>
#include <QGraphicsView>
#include <QDesktopWidget>
//KDE
#include <KWindowSystem>
//Plasma
#include <plasma/theme.h>
#include <plasma/panelsvg.h>
#include <plasma/tooltip_p.h>
#include <plasma/applet.h>
#include <plasma/view.h>
#include <plasma/containment.h>
namespace Plasma
{
class ToolTipManagerPrivate
{
public :
ToolTipManagerPrivate()
: showTimer(0)
, hideTimer(0)
, currentWidget(0)
{
}
~ToolTipManagerPrivate()
{
}
void showToolTip();
void resetShownState();
QGraphicsWidget *currentWidget;
bool isShown;
bool delayedHide;
QTimer *showTimer;
QTimer *hideTimer;
QMap<QGraphicsWidget *, ToolTip *> tooltips;
};
//TOOLTIP IMPLEMENTATION
class ToolTipManagerSingleton
{
public:
ToolTipManagerSingleton()
{
}
ToolTipManager self;
};
K_GLOBAL_STATIC( ToolTipManagerSingleton, privateInstance )
ToolTipManager *ToolTipManager::self()
{
return &privateInstance->self;
}
ToolTipManager::ToolTipManager(QObject* parent)
: QObject(parent),
d(new ToolTipManagerPrivate)
{
connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(themeUpdated()));
themeUpdated();
d->showTimer = new QTimer(this);
d->showTimer->setSingleShot(true);
d->hideTimer = new QTimer(this);
d->hideTimer->setSingleShot(true);
connect(d->showTimer, SIGNAL(timeout()), SLOT(showToolTip()));
connect(d->hideTimer, SIGNAL(timeout()), SLOT(resetShownState()));
}
ToolTipManager::~ToolTipManager()
{
if (d) delete d;
}
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);
}
}
}
bool ToolTipManager::isVisible(QGraphicsWidget *widget)
{
ToolTip * tooltip = d->tooltips.value(widget);
if (tooltip) {
return tooltip->isVisible();
}
else {
return false;
}
}
void ToolTipManager::delayedHideToolTip()
{
d->showTimer->stop(); // stop the timer to show the tooltip
d->delayedHide = true;
d->hideTimer->start(250);
}
void ToolTipManager::hideToolTip(QGraphicsWidget *widget)
{
ToolTip * tooltip = d->tooltips.value(widget);
if (tooltip) {
d->showTimer->stop(); // stop the timer to show the tooltip
d->delayedHide = false;
d->currentWidget = 0;
tooltip->hide();
}
}
void ToolTipManager::registerToolTipData(QGraphicsWidget *widget,const ToolTipManager::ToolTipData &data)
{
if (!d->tooltips.contains(widget)) {
//the tooltip is not registered we add it in our map of tooltips
d->tooltips.insert(widget,new ToolTip());
ToolTip * tooltip = d->tooltips.value(widget);
tooltip->setData(data);
tooltip->updateTheme();
}
}
void ToolTipManager::unregisterToolTip(QGraphicsWidget *widget)
{
if (d->tooltips.contains(widget)) {
ToolTip * tooltip = d->tooltips.take(widget);
if (tooltip) {
delete tooltip;
}
}
}
void ToolTipManager::updateToolTipData(QGraphicsWidget *widget,const ToolTipData &data)
{
if (!d->tooltips.contains(widget)) {
return;
}
else {
ToolTip * tooltip = d->tooltips.value(widget);
tooltip->setData(data);
}
}
bool ToolTipManager::hasToolTip(QGraphicsWidget *widget)
{
return d->tooltips.contains(widget);
}
void ToolTipManager::themeUpdated()
{
QMapIterator<QGraphicsWidget*, ToolTip *> iterator(d->tooltips);
while (iterator.hasNext()) {
iterator.next();
iterator.value()->updateTheme();
}
}
void ToolTipManagerPrivate::resetShownState()
{
if (currentWidget) {
ToolTip * tooltip = tooltips.value(currentWidget);
if ((tooltip && !tooltip->isVisible()) || delayedHide) {
//One might have moused out and back in again
delayedHide = false;
isShown = false;
tooltip->hide();
currentWidget = 0;
}
}
}
void ToolTipManagerPrivate::showToolTip()
{
if (!currentWidget) {
return;
}
ToolTip * tooltip = tooltips.value(currentWidget);
if (tooltip) {
tooltip->prepareShowing();
tooltip->move(ToolTipManager::popupPosition(currentWidget,tooltip->size()));
isShown = true; //ToolTip is visible
}
}
QPoint ToolTipManager::popupPosition(const QGraphicsItem * item, const QSize &s)
{
const Plasma::Applet * applet = dynamic_cast<const Applet *>(item);
if (!applet) {
const QGraphicsItem * currentItem = item->parentItem();
while(currentItem->parentItem() && !dynamic_cast<const Applet *>(currentItem))
{
currentItem=currentItem->parentItem();
}
applet = dynamic_cast<const Applet *>(currentItem);
if (!applet) return QPoint(0,0);
}
QGraphicsView *v = applet->view();
Q_ASSERT(v);
QPoint pos = v->mapFromScene(item->scenePos());
pos = v->mapToGlobal(pos);
//kDebug() << "==> position is" << scenePos() << v->mapFromScene(scenePos()) << pos;
Plasma::View *pv = dynamic_cast<Plasma::View *>(v);
Plasma::Location loc = Floating;
if (pv) {
loc = pv->containment()->location();
}
switch (loc) {
case BottomEdge:
pos = QPoint(pos.x(), pos.y() - s.height());
break;
case TopEdge:
pos = QPoint(pos.x(), pos.y() + (int)item->boundingRect().size().height());
break;
case LeftEdge:
pos = QPoint(pos.x() + (int)item->boundingRect().size().width(), pos.y());
break;
case RightEdge:
pos = QPoint(pos.x() - s.width(), pos.y());
break;
default:
if (pos.y() - s.height() > 0) {
pos = QPoint(pos.x(), pos.y() - s.height());
} else {
pos = QPoint(pos.x(), pos.y() + (int)item->boundingRect().size().height());
}
}
//are we out of screen?
QRect screenRect = QApplication::desktop()->screenGeometry(pv ? pv->containment()->screen() : -1);
//kDebug() << "==> rect for" << (pv ? pv->containment()->screen() : -1) << "is" << screenRect;
if (pos.rx() + s.width() > screenRect.right()) {
pos.rx() -= ((pos.rx() + s.width()) - screenRect.right());
}
if (pos.ry() + s.height() > screenRect.bottom()) {
pos.ry() -= ((pos.ry() + s.height()) - screenRect.bottom());
}
pos.rx() = qMax(0, pos.rx());
return pos;
}
//PRIVATE CLASS IMPLEMENTATION
}
#include "tooltipmanager.moc"

89
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@ -0,0 +1,89 @@
/***************************************************************************
* Copyright (C) 2007 by Alexis Ménard <darktears31@gmail.com> *
* Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com> *
* *
* 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 . *
***************************************************************************/
#ifndef PLASMA_TOOLTIP_MANAGER_H
#define PLASMA_TOOLTIP_MANAGER_H
//plasma
#include <plasma/plasma.h>
#include <plasma/plasma_export.h>
//KDE
#include <KWindowSystem>
#ifdef Q_WS_X11
#include <QX11Info>
#endif
//X11
#ifdef Q_WS_X11
#include <X11/Xlib.h>
#include <fixx11h.h>
#endif
namespace Plasma
{
class ToolTipManagerPrivate;
/**
* @short The class to manage a tooltip on a plasma applet
*
* Manage tooltip on plasma applet, before using it you have to set information
*/
class PLASMA_EXPORT ToolTipManager : public QObject
{
Q_OBJECT
public:
struct ToolTipData
{
ToolTipData() : windowToPreview( 0 ) {}
QString mainText; //Important information
QString subText; //Elaborates on the Main Text
QPixmap image; // Icon to show;
WId windowToPreview; // Id of window to show preview
};
static ToolTipManager *self();
/**
* Default constructor. Usually you want to use the singleton instead.
*/
explicit ToolTipManager(QObject* parent = 0);
~ToolTipManager();
void showToolTip(QGraphicsWidget *widget);
bool isVisible(QGraphicsWidget *widget);
void delayedHideToolTip();
void hideToolTip(QGraphicsWidget *widget);
void registerToolTipData(QGraphicsWidget *widget,const ToolTipData &data);
void unregisterToolTip(QGraphicsWidget *widget);
void updateToolTipData(QGraphicsWidget *widget,const ToolTipData &data);
bool hasToolTip(QGraphicsWidget *widget);
static QPoint popupPosition(const QGraphicsItem * item, const QSize &s);
private Q_SLOTS:
void themeUpdated();
private:
friend class ToolTipManagerSingleton;
ToolTipManagerPrivate* const d;
Q_PRIVATE_SLOT(d, void showToolTip())
Q_PRIVATE_SLOT(d, void resetShownState())
};
}
#endif