diff options
Diffstat (limited to 'src/widgets/kernel/qtooltip.cpp')
-rw-r--r-- | src/widgets/kernel/qtooltip.cpp | 42 |
1 files changed, 28 insertions, 14 deletions
diff --git a/src/widgets/kernel/qtooltip.cpp b/src/widgets/kernel/qtooltip.cpp index 51449ebf75..35eaa8042a 100644 --- a/src/widgets/kernel/qtooltip.cpp +++ b/src/widgets/kernel/qtooltip.cpp @@ -45,15 +45,24 @@ using namespace Qt::StringLiterals; Rich text displayed in a tool tip is implicitly word-wrapped unless specified differently with \c{<p style='white-space:pre'>}. - The simplest and most common way to set a widget's tool tip is by - calling its QWidget::setToolTip() function. + UI elements that are created via \l{QAction} use the tooltip property + of the QAction, so for most interactive UI elements, setting that + property is the easiest way to provide tool tips. + + \snippet tooltips/main.cpp action_tooltip + + For any other widgets, the simplest and most common way to set + a widget's tool tip is by calling its QWidget::setToolTip() function. + + \snippet tooltips/main.cpp static_tooltip It is also possible to show different tool tips for different regions of a widget, by using a QHelpEvent of type QEvent::ToolTip. Intercept the help event in your widget's \l {QWidget::}{event()} function and call QToolTip::showText() with - the text you want to display. The \l{widgets/tooltips}{Tooltips} - example illustrates this technique. + the text you want to display. + + \snippet tooltips/main.cpp dynamic_tooltip If you are calling QToolTip::hideText(), or QToolTip::showText() with an empty string, as a result of a \l{QEvent::}{ToolTip}-event you @@ -75,7 +84,7 @@ using namespace Qt::StringLiterals; \note Tool tips use the inactive color group of QPalette, because tool tips are not active windows. - \sa QWidget::toolTip, QAction::toolTip, {Tool Tips Example} + \sa QWidget::toolTip, QAction::toolTip */ class QTipLabel : public QLabel @@ -113,7 +122,7 @@ protected: #ifndef QT_NO_STYLE_STYLESHEET public slots: /** \internal - Cleanup the _q_stylesheet_parent propery. + Cleanup the _q_stylesheet_parent property. */ void styleSheetParentDestroyed() { setProperty("_q_stylesheet_parent", QVariant()); @@ -157,7 +166,9 @@ QTipLabel::QTipLabel(const QString &text, const QPoint &pos, QWidget *w, int mse void QTipLabel::restartExpireTimer(int msecDisplayTime) { - int time = 10000 + 40 * qMax(0, text().length()-100); + Q_D(const QLabel); + const qsizetype textLength = d->needTextControl() ? d->control->toPlainText().size() : text().size(); + qsizetype time = 10000 + 40 * qMax(0, textLength - 100); if (msecDisplayTime > 0) time = msecDisplayTime; expireTimer.start(time, this); @@ -168,8 +179,8 @@ void QTipLabel::reuseTip(const QString &text, int msecDisplayTime, const QPoint { #ifndef QT_NO_STYLE_STYLESHEET if (styleSheetParent){ - disconnect(styleSheetParent, SIGNAL(destroyed()), - QTipLabel::instance, SLOT(styleSheetParentDestroyed())); + disconnect(styleSheetParent, &QWidget::destroyed, + this, &QTipLabel::styleSheetParentDestroyed); styleSheetParent = nullptr; } #endif @@ -318,6 +329,7 @@ bool QTipLabel::eventFilter(QObject *o, QEvent *e) case QEvent::MouseMove: if (o == widget && !rect.isNull() && !rect.contains(static_cast<QMouseEvent*>(e)->position().toPoint())) hideTip(); + break; default: break; } @@ -343,12 +355,14 @@ void QTipLabel::placeTip(const QPoint &pos, QWidget *w) // Set up for cleaning up this later... QTipLabel::instance->styleSheetParent = w; if (w) { - connect(w, SIGNAL(destroyed()), - QTipLabel::instance, SLOT(styleSheetParentDestroyed())); - // QTBUG-64550: A font inherited by the style sheet might change the size, - // particular on Windows, where the tip is not parented on a window. - QTipLabel::instance->updateSize(pos); + connect(w, &QWidget::destroyed, + QTipLabel::instance, &QTipLabel::styleSheetParentDestroyed); } + // QTBUG-64550: A font inherited by the style sheet might change the size, + // particular on Windows, where the tip is not parented on a window. + // The updatesSize() also makes sure that the content size be updated with + // correct content margin. + QTipLabel::instance->updateSize(pos); } #endif //QT_NO_STYLE_STYLESHEET |