From 695d85363e537b51b5d0ae6ab08a9a1e7d9e8354 Mon Sep 17 00:00:00 2001 From: Alexander Volkov Date: Mon, 6 Apr 2015 13:47:16 +0300 Subject: Item delegates: show localized detailed tooltips and "What's this?" texts Extract the common part from QItemDelegate and QStyledItemDelegate which uses QLocale to convert a value for Qt::DisplayRole to a string. Use this code to get the text for tooltips and "What's this?". [ChangeLog][QtWidgets][QAbstractItemDelegate] Show localized detailed tooltips and "What's this?" texts. Task-number: QTBUG-16469 Change-Id: I8618763d45b8cfddafc2f263d658ba256be60a15 Reviewed-by: Giuseppe D'Angelo --- src/widgets/itemviews/qabstractitemdelegate.cpp | 55 ++++++++++++++++++++++--- src/widgets/itemviews/qabstractitemdelegate_p.h | 3 +- src/widgets/itemviews/qitemdelegate.cpp | 42 +++---------------- src/widgets/itemviews/qstyleditemdelegate.cpp | 36 +--------------- 4 files changed, 58 insertions(+), 78 deletions(-) (limited to 'src') diff --git a/src/widgets/itemviews/qabstractitemdelegate.cpp b/src/widgets/itemviews/qabstractitemdelegate.cpp index c2dd1ec8fd..00f2b87f93 100644 --- a/src/widgets/itemviews/qabstractitemdelegate.cpp +++ b/src/widgets/itemviews/qabstractitemdelegate.cpp @@ -370,6 +370,7 @@ bool QAbstractItemDelegate::helpEvent(QHelpEvent *event, const QStyleOptionViewItem &option, const QModelIndex &index) { + Q_D(QAbstractItemDelegate); Q_UNUSED(option); if (!event || !view) @@ -378,9 +379,10 @@ bool QAbstractItemDelegate::helpEvent(QHelpEvent *event, #ifndef QT_NO_TOOLTIP case QEvent::ToolTip: { QHelpEvent *he = static_cast(event); - QVariant tooltip = index.data(Qt::ToolTipRole); - if (tooltip.canConvert()) { - QToolTip::showText(he->globalPos(), tooltip.toString(), view); + const int precision = inherits("QItemDelegate") ? 10 : 6; // keep in sync with DBL_DIG in qitemdelegate.cpp + const QString tooltip = d->textForRole(Qt::ToolTipRole, index.data(Qt::ToolTipRole), option.locale, precision); + if (!tooltip.isEmpty()) { + QToolTip::showText(he->globalPos(), tooltip, view); return true; } break;} @@ -392,9 +394,10 @@ bool QAbstractItemDelegate::helpEvent(QHelpEvent *event, break; } case QEvent::WhatsThis: { QHelpEvent *he = static_cast(event); - QVariant whatsthis = index.data(Qt::WhatsThisRole); - if (whatsthis.canConvert()) { - QWhatsThis::showText(he->globalPos(), whatsthis.toString(), view); + const int precision = inherits("QItemDelegate") ? 10 : 6; // keep in sync with DBL_DIG in qitemdelegate.cpp + const QString whatsthis = d->textForRole(Qt::WhatsThisRole, index.data(Qt::WhatsThisRole), option.locale, precision); + if (!whatsthis.isEmpty()) { + QWhatsThis::showText(he->globalPos(), whatsthis, view); return true; } break ; } @@ -537,6 +540,46 @@ bool QAbstractItemDelegatePrivate::tryFixup(QWidget *editor) return true; } +QString QAbstractItemDelegatePrivate::textForRole(Qt::ItemDataRole role, const QVariant &value, const QLocale &locale, int precision) const +{ + const QLocale::FormatType formatType = (role == Qt::DisplayRole) ? QLocale::ShortFormat : QLocale::LongFormat; + QString text; + switch (value.userType()) { + case QMetaType::Float: + text = locale.toString(value.toFloat()); + break; + case QVariant::Double: + text = locale.toString(value.toDouble(), 'g', precision); + break; + case QVariant::Int: + case QVariant::LongLong: + text = locale.toString(value.toLongLong()); + break; + case QVariant::UInt: + case QVariant::ULongLong: + text = locale.toString(value.toULongLong()); + break; + case QVariant::Date: + text = locale.toString(value.toDate(), formatType); + break; + case QVariant::Time: + text = locale.toString(value.toTime(), formatType); + break; + case QVariant::DateTime: { + const QDateTime dateTime = value.toDateTime(); + text = locale.toString(dateTime.date(), formatType) + + QLatin1Char(' ') + + locale.toString(dateTime.time(), formatType); + break; } + default: + text = value.toString(); + if (role == Qt::DisplayRole) + text.replace(QLatin1Char('\n'), QChar::LineSeparator); + break; + } + return text; +} + void QAbstractItemDelegatePrivate::_q_commitDataAndCloseEditor(QWidget *editor) { Q_Q(QAbstractItemDelegate); diff --git a/src/widgets/itemviews/qabstractitemdelegate_p.h b/src/widgets/itemviews/qabstractitemdelegate_p.h index 05f1bd138c..1796290ba9 100644 --- a/src/widgets/itemviews/qabstractitemdelegate_p.h +++ b/src/widgets/itemviews/qabstractitemdelegate_p.h @@ -52,7 +52,7 @@ QT_BEGIN_NAMESPACE -class QAbstractItemDelegatePrivate : public QObjectPrivate +class Q_AUTOTEST_EXPORT QAbstractItemDelegatePrivate : public QObjectPrivate { Q_DECLARE_PUBLIC(QAbstractItemDelegate) public: @@ -60,6 +60,7 @@ public: bool editorEventFilter(QObject *object, QEvent *event); bool tryFixup(QWidget *editor); + QString textForRole(Qt::ItemDataRole role, const QVariant &value, const QLocale &locale, int precision = 6) const; void _q_commitDataAndCloseEditor(QWidget *editor); }; diff --git a/src/widgets/itemviews/qitemdelegate.cpp b/src/widgets/itemviews/qitemdelegate.cpp index cd952737dd..2b6e1210ca 100644 --- a/src/widgets/itemviews/qitemdelegate.cpp +++ b/src/widgets/itemviews/qitemdelegate.cpp @@ -61,6 +61,7 @@ #include +// keep in sync with QAbstractItemDelegate::helpEvent() #ifndef DBL_DIG # define DBL_DIG 10 #endif @@ -96,7 +97,7 @@ public: return text; } - static QString valueToText(const QVariant &value, const QStyleOptionViewItem &option); + QString valueToText(const QVariant &value, const QStyleOptionViewItem &option) const; QItemEditorFactory *f; bool clipPainting; @@ -326,40 +327,9 @@ void QItemDelegate::setClipping(bool clip) d->clipPainting = clip; } -QString QItemDelegatePrivate::valueToText(const QVariant &value, const QStyleOptionViewItem &option) +QString QItemDelegatePrivate::valueToText(const QVariant &value, const QStyleOptionViewItem &option) const { - QString text; - switch (value.userType()) { - case QMetaType::Float: - text = option.locale.toString(value.toFloat(), 'g'); - break; - case QVariant::Double: - text = option.locale.toString(value.toDouble(), 'g', DBL_DIG); - break; - case QVariant::Int: - case QVariant::LongLong: - text = option.locale.toString(value.toLongLong()); - break; - case QVariant::UInt: - case QVariant::ULongLong: - text = option.locale.toString(value.toULongLong()); - break; - case QVariant::Date: - text = option.locale.toString(value.toDate(), QLocale::ShortFormat); - break; - case QVariant::Time: - text = option.locale.toString(value.toTime(), QLocale::ShortFormat); - break; - case QVariant::DateTime: - text = option.locale.toString(value.toDateTime().date(), QLocale::ShortFormat); - text += QLatin1Char(' '); - text += option.locale.toString(value.toDateTime().time(), QLocale::ShortFormat); - break; - default: - text = replaceNewLine(value.toString()); - break; - } - return text; + return textForRole(Qt::DisplayRole, value, option.locale, DBL_DIG); } /*! @@ -428,7 +398,7 @@ void QItemDelegate::paint(QPainter *painter, QRect displayRect; value = index.data(Qt::DisplayRole); if (value.isValid() && !value.isNull()) { - text = QItemDelegatePrivate::valueToText(value, opt); + text = d->valueToText(value, opt); displayRect = textRectangle(painter, d->textLayoutBounds(opt), opt.font, text); } @@ -1055,7 +1025,7 @@ QRect QItemDelegate::rect(const QStyleOptionViewItem &option, return QRect(QPoint(0, 0), option.decorationSize); case QVariant::String: default: { - QString text = QItemDelegatePrivate::valueToText(value, option); + const QString text = d->valueToText(value, option); value = index.data(Qt::FontRole); QFont fnt = qvariant_cast(value).resolve(option.font); return textRectangle(0, d->textLayoutBounds(option), fnt, text); } diff --git a/src/widgets/itemviews/qstyleditemdelegate.cpp b/src/widgets/itemviews/qstyleditemdelegate.cpp index f02f98cb31..483cfbdc36 100644 --- a/src/widgets/itemviews/qstyleditemdelegate.cpp +++ b/src/widgets/itemviews/qstyleditemdelegate.cpp @@ -255,41 +255,7 @@ QStyledItemDelegate::~QStyledItemDelegate() */ QString QStyledItemDelegate::displayText(const QVariant &value, const QLocale& locale) const { - QString text; - switch (value.userType()) { - case QMetaType::Float: - case QVariant::Double: - text = locale.toString(value.toReal()); - break; - case QVariant::Int: - case QVariant::LongLong: - text = locale.toString(value.toLongLong()); - break; - case QVariant::UInt: - case QVariant::ULongLong: - text = locale.toString(value.toULongLong()); - break; - case QVariant::Date: - text = locale.toString(value.toDate(), QLocale::ShortFormat); - break; - case QVariant::Time: - text = locale.toString(value.toTime(), QLocale::ShortFormat); - break; - case QVariant::DateTime: - text = locale.toString(value.toDateTime().date(), QLocale::ShortFormat); - text += QLatin1Char(' '); - text += locale.toString(value.toDateTime().time(), QLocale::ShortFormat); - break; - default: - // convert new lines into line separators - text = value.toString(); - for (int i = 0; i < text.count(); ++i) { - if (text.at(i) == QLatin1Char('\n')) - text[i] = QChar::LineSeparator; - } - break; - } - return text; + return d_func()->textForRole(Qt::DisplayRole, value, locale); } /*! 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