qtooltip.cpp

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7-
8-
9class QTipLabel : public QLabel-
10{-
11 public: template <typename ThisObject> inline void qt_check_for_QOBJECT_macro(const ThisObject &_q_argument) const { int i = qYouForgotTheQ_OBJECT_Macro(this, &_q_argument); i = i + 1; }-
12#pragma GCC diagnostic push-
13 static const QMetaObject staticMetaObject; virtual const QMetaObject *metaObject() const; virtual void *qt_metacast(const char *); virtual int qt_metacall(QMetaObject::Call, int, void **); static inline QString tr(const char *s, const char *c = nullptr, int n = -1) { return staticMetaObject.tr(s, c, n); } __attribute__ ((__deprecated__)) static inline QString trUtf8(const char *s, const char *c = nullptr, int n = -1) { return staticMetaObject.tr(s, c, n); } private: __attribute__((visibility("hidden"))) static void qt_static_metacall(QObject *, QMetaObject::Call, int, void **);-
14#pragma GCC diagnostic pop-
15 struct QPrivateSignal {};-
16public:-
17 QTipLabel(const QString &text, QWidget *w, int msecDisplayTime);-
18 ~QTipLabel();-
19 static QTipLabel *instance;-
20-
21 bool eventFilter(QObject *, QEvent *) override;-
22-
23 QBasicTimer hideTimer, expireTimer;-
24-
25 bool fadingOut;-
26-
27 void reuseTip(const QString &text, int msecDisplayTime);-
28 void hideTip();-
29 void hideTipImmediately();-
30 void setTipRect(QWidget *w, const QRect &r);-
31 void restartExpireTimer(int msecDisplayTime);-
32 bool tipChanged(const QPoint &pos, const QString &text, QObject *o);-
33 void placeTip(const QPoint &pos, QWidget *w);-
34-
35 static int getTipScreen(const QPoint &pos, QWidget *w);-
36protected:-
37 void timerEvent(QTimerEvent *e) override;-
38 void paintEvent(QPaintEvent *e) override;-
39 void mouseMoveEvent(QMouseEvent *e) override;-
40 void resizeEvent(QResizeEvent *e) override;-
41-
42-
43public :-
44-
45-
46-
47 void styleSheetParentDestroyed() {-
48 setProperty("_q_stylesheet_parent", QVariant());-
49 styleSheetParent = 0;-
50 }-
51-
52private:-
53 QWidget *styleSheetParent;-
54-
55-
56private:-
57 QWidget *widget;-
58 QRect rect;-
59};-
60-
61QTipLabel *QTipLabel::instance = 0;-
62-
63QTipLabel::QTipLabel(const QString &text, QWidget *w, int msecDisplayTime)-
64-
65 : QLabel(w, Qt::ToolTip | Qt::BypassGraphicsProxyWidget), styleSheetParent(0), widget(0)-
66-
67-
68-
69{-
70 delete instance;-
71 instance = this;-
72 setForegroundRole(QPalette::ToolTipText);-
73 setBackgroundRole(QPalette::ToolTipBase);-
74 setPalette(QToolTip::palette());-
75 ensurePolished();-
76 setMargin(1 + style()->pixelMetric(QStyle::PM_ToolTipLabelFrameWidth, 0, this));-
77 setFrameStyle(QFrame::NoFrame);-
78 setAlignment(Qt::AlignLeft);-
79 setIndent(1);-
80 (static_cast<QApplication *>(QCoreApplication::instance()))->installEventFilter(this);-
81 setWindowOpacity(style()->styleHint(QStyle::SH_ToolTipLabel_Opacity, 0, this) / 255.0);-
82 setMouseTracking(true);-
83 fadingOut = false;-
84 reuseTip(text, msecDisplayTime);-
85}-
86-
87void QTipLabel::restartExpireTimer(int msecDisplayTime)-
88{-
89 int time = 10000 + 40 * qMax(0, text().length()-100);-
90 if (msecDisplayTime > 0)-
91 time = msecDisplayTime;-
92 expireTimer.start(time, this);-
93 hideTimer.stop();-
94}-
95-
96void QTipLabel::reuseTip(const QString &text, int msecDisplayTime)-
97{-
98-
99 if (styleSheetParent){-
100 disconnect(styleSheetParent, qFlagLocation("2""destroyed()" "\0" __FILE__ ":" "197""203"),-
101 QTipLabel::instance, qFlagLocation("1""styleSheetParentDestroyed()" "\0" __FILE__ ":" "198""204"));-
102 styleSheetParent = 0;-
103 }-
104-
105-
106 setWordWrap(Qt::mightBeRichText(text));-
107 setText(text);-
108 QFontMetrics fm(font());-
109 QSize extra(1, 0);-
110-
111 if (fm.descent() == 2 && fm.ascent() >= 11)-
112 ++extra.rheight();-
113 resize(sizeHint() + extra);-
114 restartExpireTimer(msecDisplayTime);-
115}-
116-
117void QTipLabel::paintEvent(QPaintEvent *ev)-
118{-
119 QStylePainter p(this);-
120 QStyleOptionFrame opt;-
121 opt.init(this);-
122 p.drawPrimitive(QStyle::PE_PanelTipLabel, opt);-
123 p.end();-
124-
125 QLabel::paintEvent(ev);-
126}-
127-
128void QTipLabel::resizeEvent(QResizeEvent *e)-
129{-
130 QStyleHintReturnMask frameMask;-
131 QStyleOption option;-
132 option.init(this);-
133 if (style()->styleHint(QStyle::SH_ToolTip_Mask, &option, this, &frameMask))-
134 setMask(frameMask.region);-
135-
136 QLabel::resizeEvent(e);-
137}-
138-
139void QTipLabel::mouseMoveEvent(QMouseEvent *e)-
140{-
141 if (rect.isNull())-
142 return;-
143 QPoint pos = e->globalPos();-
144 if (widget)-
145 pos = widget->mapFromGlobal(pos);-
146 if (!rect.contains(pos))-
147 hideTip();-
148 QLabel::mouseMoveEvent(e);-
149}-
150-
151QTipLabel::~QTipLabel()-
152{-
153 instance = 0;-
154}-
155-
156void QTipLabel::hideTip()-
157{-
158 if (!hideTimer.isActive())-
159 hideTimer.start(300, this);-
160}-
161-
162void QTipLabel::hideTipImmediately()-
163{-
164 close();-
165 deleteLater();-
166}-
167-
168void QTipLabel::setTipRect(QWidget *w, const QRect &r)-
169{-
170 if (!(__builtin_expect(!!(!
__builtin_expe...&& !w), false)Description
TRUEnever evaluated
FALSEnever evaluated
r.isNull() && !w)), false)
__builtin_expe...&& !w), false)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
171 QMessageLogger(__FILE__, 268274, __PRETTY_FUNCTION__).warning("QToolTip::setTipRect: Cannot pass null widget if rect is set");-
172 else{return;
never executed: return;
0
173 }-
174 widget = w;-
175 rect = r;-
}}
never executed: end of block
177-
178void QTipLabel::timerEvent(QTimerEvent *e)-
179{-
180 if (e->timerId() == hideTimer.timerId()-
181 || e->timerId() == expireTimer.timerId()){-
182 hideTimer.stop();-
183 expireTimer.stop();-
184 hideTipImmediately();-
185-
186 }-
187}-
188-
189bool QTipLabel::eventFilter(QObject *o, QEvent *e)-
190{-
191 switch (e->type()) {-
192 case QEvent::Leave:-
193 hideTip();-
194 break;-
195 case QEvent::WindowActivate:-
196 case QEvent::WindowDeactivate:-
197 case QEvent::FocusIn:-
198 case QEvent::FocusOut:-
199-
200 case QEvent::Close:-
201 case QEvent::MouseButtonPress:-
202 case QEvent::MouseButtonRelease:-
203 case QEvent::MouseButtonDblClick:-
204 case QEvent::Wheel:-
205 hideTipImmediately();-
206 break;-
207-
208 case QEvent::MouseMove:-
209 if (o == widget && !rect.isNull() && !rect.contains(static_cast<QMouseEvent*>(e)->pos()))-
210 hideTip();-
211 default:-
212 break;-
213 }-
214 return false;-
215}-
216-
217int QTipLabel::getTipScreen(const QPoint &pos, QWidget *w)-
218{-
219 if (QApplication::desktop()->isVirtualDesktop())-
220 return QApplication::desktop()->screenNumber(pos);-
221 else-
222 return QApplication::desktop()->screenNumber(w);-
223}-
224-
225void QTipLabel::placeTip(const QPoint &pos, QWidget *w)-
226{-
227-
228 if (testAttribute(Qt::WA_StyleSheet) || (w && qobject_cast<QStyleSheetStyle *>(w->style()))) {-
229-
230 QTipLabel::instance->setProperty("_q_stylesheet_parent", QVariant::fromValue(w));-
231-
232 QTipLabel::instance->setStyleSheet(QLatin1String("/* */"));-
233-
234-
235 QTipLabel::instance->styleSheetParent = w;-
236 if (w) {-
237 connect(w, qFlagLocation("2""destroyed()" "\0" __FILE__ ":" "376""382"),-
238 QTipLabel::instance, qFlagLocation("1""styleSheetParentDestroyed()" "\0" __FILE__ ":" "377""383"));-
239 }-
240 }-
241 QRect screen = QApplication::desktop()->screenGeometry(getTipScreen(pos, w));-
242-
243-
244 QPoint p = pos;-
245 p += QPoint(2,-
246-
247-
248-
249 16-
250-
251 );-
252 if (p.x() + this->width() > screen.x() + screen.width())-
253 p.rx() -= 4 + this->width();-
254 if (p.y() + this->height() > screen.y() + screen.height())-
255 p.ry() -= 24 + this->height();-
256 if (p.y() < screen.y())-
257 p.setY(screen.y());-
258 if (p.x() + this->width() > screen.x() + screen.width())-
259 p.setX(screen.x() + screen.width() - this->width());-
260 if (p.x() < screen.x())-
261 p.setX(screen.x());-
262 if (p.y() + this->height() > screen.y() + screen.height())-
263 p.setY(screen.y() + screen.height() - this->height());-
264 this->move(p);-
265}-
266-
267bool QTipLabel::tipChanged(const QPoint &pos, const QString &text, QObject *o)-
268{-
269 if (QTipLabel::instance->text() != text)-
270 return true;-
271-
272 if (o != widget)-
273 return true;-
274-
275 if (!rect.isNull())-
276 return !rect.contains(pos);-
277 else-
278 return false;-
279}-
280void QToolTip::showText(const QPoint &pos, const QString &text, QWidget *w, const QRect &rect)-
281{-
282 showText(pos, text, w, rect, -1);-
283}-
284void QToolTip::showText(const QPoint &pos, const QString &text, QWidget *w, const QRect &rect, int msecDisplayTime)-
285{-
286 if (QTipLabel::instance && QTipLabel::instance->isVisible()){-
287 if (text.isEmpty()){-
288 QTipLabel::instance->hideTip();-
289 return;-
290 }-
291 else if (!QTipLabel::instance->fadingOut){-
292-
293-
294 QPoint localPos = pos;-
295 if (w)-
296 localPos = w->mapFromGlobal(pos);-
297 if (QTipLabel::instance->tipChanged(localPos, text, w)){-
298 QTipLabel::instance->reuseTip(text, msecDisplayTime);-
299 QTipLabel::instance->setTipRect(w, rect);-
300 QTipLabel::instance->placeTip(pos, w);-
301 }-
302 return;-
303 }-
304 }-
305-
306 if (!text.isEmpty()){-
307-
308 new QTipLabel(text, w, msecDisplayTime);-
309-
310-
311-
312-
313-
314 QTipLabel::instance->setTipRect(w, rect);-
315 QTipLabel::instance->placeTip(pos, w);-
316 QTipLabel::instance->setObjectName(QLatin1String("qtooltip_label"));-
317-
318-
319-
320 if (QApplication::isEffectEnabled(Qt::UI_FadeTooltip))-
321 qFadeEffect(QTipLabel::instance);-
322 else if (QApplication::isEffectEnabled(Qt::UI_AnimateTooltip))-
323 qScrollEffect(QTipLabel::instance);-
324 else-
325 QTipLabel::instance->showNormal();-
326-
327-
328-
329 }-
330}-
331-
332-
333-
334-
335-
336-
337-
338void QToolTip::showText(const QPoint &pos, const QString &text, QWidget *w)-
339{-
340 QToolTip::showText(pos, text, w, QRect());-
341}-
342bool QToolTip::isVisible()-
343{-
344 return (QTipLabel::instance != 0 && QTipLabel::instance->isVisible());-
345}-
346-
347-
348-
349-
350-
351-
352-
353QString QToolTip::text()-
354{-
355 if (QTipLabel::instance)-
356 return QTipLabel::instance->text();-
357 return QString();-
358}-
359-
360-
361namespace { namespace Q_QGS_tooltip_palette { typedef QPalette Type; QBasicAtomicInt guard = { QtGlobalStatic::Uninitialized }; __attribute__((visibility("hidden"))) inline Type *innerFunction() { struct HolderBase { ~HolderBase() noexcept { if (guard.load() == QtGlobalStatic::Initialized) guard.store(QtGlobalStatic::Destroyed); } }; static struct Holder : public HolderBase { Type value; Holder() noexcept(noexcept(Type ())) : value () { guard.store(QtGlobalStatic::Initialized); } } holder; return &holder.value; } } } static QGlobalStatic<QPalette, Q_QGS_tooltip_palette::innerFunction, Q_QGS_tooltip_palette::guard> tooltip_palette;-
362-
363-
364-
365-
366-
367-
368-
369QPalette QToolTip::palette()-
370{-
371 return *tooltip_palette();-
372}-
373-
374-
375-
376-
377-
378-
379QFont QToolTip::font()-
380{-
381 return QApplication::font("QTipLabel");-
382}-
383void QToolTip::setPalette(const QPalette &palette)-
384{-
385 *tooltip_palette() = palette;-
386 if (QTipLabel::instance)-
387 QTipLabel::instance->setPalette(palette);-
388}-
389-
390-
391-
392-
393-
394-
395void QToolTip::setFont(const QFont &font)-
396{-
397 QApplication::setFont(font, "QTipLabel");-
398}-
399-
400-
401-
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