Utility functions used by the Bitcoin Qt UI. More...

Classes
class	ToolTipToRichTextFilter
	Qt event filter that intercepts ToolTipChange events, and replaces the tooltip with a rich text representation if needed. More...

class	LabelOutOfFocusEventFilter
	Qt event filter that intercepts QEvent::FocusOut events for QLabel objects, and resets their ‘textInteractionFlags’ property to get rid of the visible cursor. More...

class	ThemedLabel

class	ClickableLabel

class	ClickableProgressBar

class	ItemDelegate

Typedefs
typedef ClickableProgressBar	ProgressBar

Functions
QString	dateTimeStr (const QDateTime &date)

QString	dateTimeStr (qint64 nTime)

QFont	fixedPitchFont (bool use_embedded_font)

static std::string	DummyAddress (const CChainParams &params)

void	setupAddressWidget (QValidatedLineEdit widget, QWidget parent)

void	AddButtonShortcut (QAbstractButton *button, const QKeySequence &shortcut)
	Connects an additional shortcut to a QAbstractButton. More...

bool	parseBitcoinURI (const QUrl &uri, SendCoinsRecipient *out)

bool	parseBitcoinURI (QString uri, SendCoinsRecipient *out)

QString	formatBitcoinURI (const SendCoinsRecipient &info)

bool	isDust (interfaces::Node &node, const QString &address, const CAmount &amount)

QString	HtmlEscape (const QString &str, bool fMultiLine)

QString	HtmlEscape (const std::string &str, bool fMultiLine)

void	copyEntryData (const QAbstractItemView *view, int column, int role=Qt::EditRole)
	Copy a field of the currently selected entry of a view to the clipboard. More...

QList< QModelIndex >	getEntryData (const QAbstractItemView *view, int column)
	Return a field of the currently selected entry as a QString. More...

bool	hasEntryData (const QAbstractItemView *view, int column, int role)
	Returns true if the specified field of the currently selected view entry is not empty. More...

void	LoadFont (const QString &file_name)
	Loads the font from the file specified by file_name, aborts if it fails. More...

QString	getDefaultDataDirectory ()
	Determine default data directory for operating system. More...

QString	ExtractFirstSuffixFromFilter (const QString &filter)
	Extract first suffix from filter pattern "Description (.foo)" or "Description (.foo *.bar ...). More...

QString	getSaveFileName (QWidget parent, const QString &caption, const QString &dir, const QString &filter, QString selectedSuffixOut)
	Get save filename, mimics QFileDialog::getSaveFileName, except that it appends a default suffix when no suffix is provided by the user. More...

QString	getOpenFileName (QWidget parent, const QString &caption, const QString &dir, const QString &filter, QString selectedSuffixOut)
	Get open filename, convenience wrapper for QFileDialog::getOpenFileName. More...

Qt::ConnectionType	blockingGUIThreadConnection ()
	Get connection type to call object slot in GUI thread with invokeMethod. More...

bool	checkPoint (const QPoint &p, const QWidget *w)

bool	isObscured (QWidget *w)

void	bringToFront (QWidget *w)

void	handleCloseWindowShortcut (QWidget *w)

void	openDebugLogfile ()

bool	openBitcoinConf ()

bool	GetStartOnSystemStartup ()

bool	SetStartOnSystemStartup (bool fAutoStart)

void	setClipboard (const QString &str)

fs::path	QStringToPath (const QString &path)
	Convert QString to OS specific boost path through UTF-8. More...

QString	PathToQString (const fs::path &path)
	Convert OS specific boost path to QString through UTF-8. More...

QString	NetworkToQString (Network net)
	Convert enum Network to QString. More...

QString	ConnectionTypeToQString (ConnectionType conn_type, bool prepend_direction)
	Convert enum ConnectionType to QString. More...

QString	formatDurationStr (std::chrono::seconds dur)
	Convert seconds into a QString with days, hours, mins, secs. More...

QString	FormatPeerAge (std::chrono::seconds time_connected)
	Convert peer connection time to a QString denominated in the most relevant unit. More...

QString	formatServicesStr (quint64 mask)
	Format CNodeStats.nServices bitmask into a user-readable string. More...

QString	formatPingTime (std::chrono::microseconds ping_time)
	Format a CNodeStats.m_last_ping_time into a user-readable string or display N/A, if 0. More...

QString	formatTimeOffset (int64_t nTimeOffset)
	Format a CNodeCombinedStats.nTimeOffset into a user-readable string. More...

QString	formatNiceTimeOffset (qint64 secs)

QString	formatBytes (uint64_t bytes)

qreal	calculateIdealFontSize (int width, const QString &text, QFont font, qreal minPointSize, qreal font_size)

void	PolishProgressDialog (QProgressDialog *dialog)

int	TextWidth (const QFontMetrics &fm, const QString &text)
	Returns the distance in pixels appropriate for drawing a subsequent character after text. More...

void	LogQtInfo ()
	Writes to debug.log short info about the used Qt and the host system. More...

void	PopupMenu (QMenu menu, const QPoint &point, QAction at_action=nullptr)
	Call QMenu::popup() only on supported QT_QPA_PLATFORM. More...

QDateTime	StartOfDay (const QDate &date)
	Returns the start-moment of the day in local time. More...

bool	HasPixmap (const QLabel *label)
	Returns true if pixmap has been set. More...

QImage	GetImage (const QLabel *label)

QString	MakeHtmlLink (const QString &source, const QString &link)
	Replaces a plain text link with an HTML tagged one. More...

void	PrintSlotException (const std::exception exception, const QObject sender, const QObject *receiver)

void	ShowModalDialogAsynchronously (QDialog *dialog)
	Shows a QDialog instance asynchronously, and deletes it on close. More...

template<typename SeparatorType >
QStringList	SplitSkipEmptyParts (const QString &string, const SeparatorType &separator)
	Splits the string into substrings wherever separator occurs, and returns the list of those strings. More...

template<typename Sender , typename Signal , typename Receiver , typename Slot >
auto	ExceptionSafeConnect (Sender sender, Signal signal, Receiver receiver, Slot method, Qt::ConnectionType type=Qt::AutoConnection)
	A drop-in replacement of QObject::connect function (see: https://doc.qt.io/qt-5/qobject.html#connect-3), that guaranties that all exceptions are handled within the slot. More...

bool	IsEscapeOrBack (int key)

Variables
constexpr auto	dialog_flags = Qt::WindowTitleHint \| Qt::WindowSystemMenuHint \| Qt::WindowCloseButtonHint

Detailed Description

Utility functions used by the Bitcoin Qt UI.

Typedef Documentation

◆ ProgressBar

typedef ClickableProgressBar GUIUtil::ProgressBar

Definition at line 300 of file guiutil.h.

Function Documentation

◆ AddButtonShortcut()

void GUIUtil::AddButtonShortcut	(	QAbstractButton *	button,
		const QKeySequence &	shortcut
	)

Connects an additional shortcut to a QAbstractButton.

Works around the one shortcut limitation of the button's shortcut property.

Parameters

[in]	button	QAbstractButton to assign shortcut to
[in]	shortcut	QKeySequence to use as shortcut

Definition at line 147 of file guiutil.cpp.

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◆ blockingGUIThreadConnection()

Qt::ConnectionType GUIUtil::blockingGUIThreadConnection ( )

Get connection type to call object slot in GUI thread with invokeMethod.

The call will be blocking.

Returns: If called from the GUI thread, return a Qt::DirectConnection. If called from another thread, return a Qt::BlockingQueuedConnection.

Definition at line 381 of file guiutil.cpp.

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◆ bringToFront()

void GUIUtil::bringToFront ( QWidget * w )

Definition at line 409 of file guiutil.cpp.

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◆ calculateIdealFontSize()

qreal GUIUtil::calculateIdealFontSize	(	int	width,
		const QString &	text,
		QFont	font,
		qreal	minPointSize,
		qreal	font_size
	)

Definition at line 832 of file guiutil.cpp.

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◆ checkPoint()

bool GUIUtil::checkPoint	(	const QPoint &	p,
		const QWidget *	w
	)

Definition at line 393 of file guiutil.cpp.

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◆ ConnectionTypeToQString()

QString GUIUtil::ConnectionTypeToQString	(	ConnectionType	conn_type,
		bool	prepend_direction
	)

Convert enum ConnectionType to QString.

Definition at line 703 of file guiutil.cpp.

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◆ copyEntryData()

void GUIUtil::copyEntryData	(	const QAbstractItemView *	view,
		int	column,
		int	role = `Qt::EditRole`
	)

Copy a field of the currently selected entry of a view to the clipboard.

Does nothing if nothing is selected.

Parameters

[in]	column	Data column to extract from the model
[in]	role	Data role to extract from the model

See also: TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress

Definition at line 267 of file guiutil.cpp.

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◆ dateTimeStr() [1/2]

QString GUIUtil::dateTimeStr ( const QDateTime & date )

Definition at line 94 of file guiutil.cpp.

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◆ dateTimeStr() [2/2]

QString GUIUtil::dateTimeStr ( qint64 nTime )

Definition at line 99 of file guiutil.cpp.

◆ DummyAddress()

static std::string GUIUtil::DummyAddress ( const CChainParams & params )

static

Definition at line 113 of file guiutil.cpp.

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◆ ExceptionSafeConnect()

template<typename Sender , typename Signal , typename Receiver , typename Slot >

auto GUIUtil::ExceptionSafeConnect	(	Sender	sender,
		Signal	signal,
		Receiver	receiver,
		Slot	method,
		Qt::ConnectionType	type = `Qt::AutoConnection`
	)

A drop-in replacement of QObject::connect function (see: https://doc.qt.io/qt-5/qobject.html#connect-3), that guaranties that all exceptions are handled within the slot.

NOTE: This function is incompatible with Qt private signals.

Definition at line 391 of file guiutil.h.

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◆ ExtractFirstSuffixFromFilter()

QString GUIUtil::ExtractFirstSuffixFromFilter ( const QString & filter )

Extract first suffix from filter pattern "Description (*.foo)" or "Description (*.foo *.bar ...).

Parameters

[in] filter Filter specification such as "Comma Separated Files (*.csv)"

Returns: QString

Definition at line 305 of file guiutil.cpp.

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◆ fixedPitchFont()

QFont GUIUtil::fixedPitchFont ( bool use_embedded_font )

Definition at line 104 of file guiutil.cpp.

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◆ formatBitcoinURI()

QString GUIUtil::formatBitcoinURI ( const SendCoinsRecipient & info )

Definition at line 214 of file guiutil.cpp.

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◆ formatBytes()

QString GUIUtil::formatBytes ( uint64_t bytes )

Definition at line 820 of file guiutil.cpp.

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◆ formatDurationStr()

QString GUIUtil::formatDurationStr ( std::chrono::seconds dur )

Convert seconds into a QString with days, hours, mins, secs.

Definition at line 732 of file guiutil.cpp.

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◆ formatNiceTimeOffset()

QString GUIUtil::formatNiceTimeOffset ( qint64 secs )

Definition at line 783 of file guiutil.cpp.

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◆ FormatPeerAge()

QString GUIUtil::FormatPeerAge ( std::chrono::seconds time_connected )

Convert peer connection time to a QString denominated in the most relevant unit.

Definition at line 747 of file guiutil.cpp.

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◆ formatPingTime()

QString GUIUtil::formatPingTime ( std::chrono::microseconds ping_time )

Format a CNodeStats.m_last_ping_time into a user-readable string or display N/A, if 0.

Definition at line 771 of file guiutil.cpp.

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◆ formatServicesStr()

QString GUIUtil::formatServicesStr ( quint64 mask )

Format CNodeStats.nServices bitmask into a user-readable string.

Definition at line 757 of file guiutil.cpp.

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◆ formatTimeOffset()

QString GUIUtil::formatTimeOffset ( int64_t nTimeOffset )

Format a CNodeCombinedStats.nTimeOffset into a user-readable string.

Definition at line 778 of file guiutil.cpp.

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◆ getDefaultDataDirectory()

QString GUIUtil::getDefaultDataDirectory ( )

Determine default data directory for operating system.

Definition at line 300 of file guiutil.cpp.

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◆ getEntryData()

QList< QModelIndex > GUIUtil::getEntryData	(	const QAbstractItemView *	view,
		int	column
	)

Return a field of the currently selected entry as a QString.

Does nothing if nothing is selected.

Parameters

[in] column Data column to extract from the model

See also: TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress

Definition at line 280 of file guiutil.cpp.

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◆ GetImage()

QImage GUIUtil::GetImage ( const QLabel * label )

Definition at line 974 of file guiutil.cpp.

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◆ getOpenFileName()

QString GUIUtil::getOpenFileName	(	QWidget *	parent,
		const QString &	caption,
		const QString &	dir,
		const QString &	filter,
		QString *	selectedSuffixOut
	)

Get open filename, convenience wrapper for QFileDialog::getOpenFileName.

Parameters

[in]	parent	Parent window (or 0)
[in]	caption	Window caption (or empty, for default)
[in]	dir	Starting directory (or empty, to default to documents directory)
[in]	filter	Filter specification such as "Comma Separated Files (*.csv)"
[out]	selectedSuffixOut	Pointer to return the suffix (file type) that was selected (or 0). Can be useful when choosing the save file format based on suffix.

Definition at line 356 of file guiutil.cpp.

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◆ getSaveFileName()

QString GUIUtil::getSaveFileName	(	QWidget *	parent,
		const QString &	caption,
		const QString &	dir,
		const QString &	filter,
		QString *	selectedSuffixOut
	)

Get save filename, mimics QFileDialog::getSaveFileName, except that it appends a default suffix when no suffix is provided by the user.

Parameters

[in]	parent	Parent window (or 0)
[in]	caption	Window caption (or empty, for default)
[in]	dir	Starting directory (or empty, to default to documents directory)
[in]	filter	Filter specification such as "Comma Separated Files (*.csv)"
[out]	selectedSuffixOut	Pointer to return the suffix (file type) that was selected (or 0). Can be useful when choosing the save file format based on suffix.

Definition at line 316 of file guiutil.cpp.

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◆ GetStartOnSystemStartup()

bool GUIUtil::GetStartOnSystemStartup ( )

Definition at line 659 of file guiutil.cpp.

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◆ handleCloseWindowShortcut()

void GUIUtil::handleCloseWindowShortcut ( QWidget * w )

Definition at line 427 of file guiutil.cpp.

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◆ hasEntryData()

bool GUIUtil::hasEntryData	(	const QAbstractItemView *	view,
		int	column,
		int	role
	)

Returns true if the specified field of the currently selected view entry is not empty.

Parameters

[in]	column	Data column to extract from the model
[in]	role	Data role to extract from the model

See also: TransactionView::contextualMenu

Definition at line 287 of file guiutil.cpp.

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◆ HasPixmap()

bool GUIUtil::HasPixmap ( const QLabel * label )

Returns true if pixmap has been set.

QPixmap* QLabel::pixmap() is deprecated since Qt 5.15.

Definition at line 965 of file guiutil.cpp.

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◆ HtmlEscape() [1/2]

QString GUIUtil::HtmlEscape	(	const QString &	str,
		bool	fMultiLine
	)

Definition at line 252 of file guiutil.cpp.

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◆ HtmlEscape() [2/2]

QString GUIUtil::HtmlEscape	(	const std::string &	str,
		bool	fMultiLine
	)

Definition at line 262 of file guiutil.cpp.

◆ isDust()

bool GUIUtil::isDust	(	interfaces::Node &	node,
		const QString &	address,
		const CAmount &	amount
	)

Definition at line 244 of file guiutil.cpp.

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◆ IsEscapeOrBack()

bool GUIUtil::IsEscapeOrBack ( int key )

inline

Definition at line 430 of file guiutil.h.

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◆ isObscured()

bool GUIUtil::isObscured ( QWidget * w )

Definition at line 400 of file guiutil.cpp.

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◆ LoadFont()

void GUIUtil::LoadFont ( const QString & file_name )

Loads the font from the file specified by file_name, aborts if it fails.

Definition at line 294 of file guiutil.cpp.

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◆ LogQtInfo()

void GUIUtil::LogQtInfo ( )

Writes to debug.log short info about the used Qt and the host system.

Definition at line 916 of file guiutil.cpp.

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◆ MakeHtmlLink()

QString GUIUtil::MakeHtmlLink	(	const QString &	source,
		const QString &	link
	)

Replaces a plain text link with an HTML tagged one.

Definition at line 987 of file guiutil.cpp.

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◆ NetworkToQString()

QString GUIUtil::NetworkToQString ( Network net )

Convert enum Network to QString.

Definition at line 683 of file guiutil.cpp.

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◆ openBitcoinConf()

bool GUIUtil::openBitcoinConf ( )

Definition at line 441 of file guiutil.cpp.

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◆ openDebugLogfile()

void GUIUtil::openDebugLogfile ( )

Definition at line 432 of file guiutil.cpp.

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◆ parseBitcoinURI() [1/2]

bool GUIUtil::parseBitcoinURI	(	const QUrl &	uri,
		SendCoinsRecipient *	out
	)

Definition at line 152 of file guiutil.cpp.

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◆ parseBitcoinURI() [2/2]

bool GUIUtil::parseBitcoinURI	(	QString	uri,
		SendCoinsRecipient *	out
	)

Definition at line 208 of file guiutil.cpp.

◆ PathToQString()

QString GUIUtil::PathToQString ( const fs::path & path )

Convert OS specific boost path to QString through UTF-8.

Definition at line 678 of file guiutil.cpp.

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◆ PolishProgressDialog()

void GUIUtil::PolishProgressDialog ( QProgressDialog * dialog )

Definition at line 897 of file guiutil.cpp.

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◆ PopupMenu()

void GUIUtil::PopupMenu	(	QMenu *	menu,
		const QPoint &	point,
		QAction *	at_action
	)

Call QMenu::popup() only on supported QT_QPA_PLATFORM.

Definition at line 949 of file guiutil.cpp.

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◆ PrintSlotException()

void GUIUtil::PrintSlotException	(	const std::exception *	exception,
		const QObject *	sender,
		const QObject *	receiver
	)

Definition at line 994 of file guiutil.cpp.

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◆ QStringToPath()

fs::path GUIUtil::QStringToPath ( const QString & path )

Convert QString to OS specific boost path through UTF-8.

Definition at line 673 of file guiutil.cpp.

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◆ setClipboard()

void GUIUtil::setClipboard ( const QString & str )

Definition at line 664 of file guiutil.cpp.

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◆ SetStartOnSystemStartup()

bool GUIUtil::SetStartOnSystemStartup ( bool fAutoStart )

Definition at line 660 of file guiutil.cpp.

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◆ setupAddressWidget()

void GUIUtil::setupAddressWidget	(	QValidatedLineEdit *	widget,
		QWidget *	parent
	)

Definition at line 134 of file guiutil.cpp.

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◆ ShowModalDialogAsynchronously()

void GUIUtil::ShowModalDialogAsynchronously ( QDialog * dialog )

Shows a QDialog instance asynchronously, and deletes it on close.

Definition at line 1005 of file guiutil.cpp.

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◆ SplitSkipEmptyParts()

template<typename SeparatorType >

QStringList GUIUtil::SplitSkipEmptyParts	(	const QString &	string,
		const SeparatorType &	separator
	)

Splits the string into substrings wherever separator occurs, and returns the list of those strings.

Empty strings do not appear in the result.

QString::split() signature differs in different Qt versions:

QString::SplitBehavior is deprecated since Qt 5.15
Qt::SplitBehavior was introduced in Qt 5.14 If {QString|Qt}::SkipEmptyParts behavior is required, use this function instead of QString::split().

Definition at line 363 of file guiutil.h.

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◆ StartOfDay()

QDateTime GUIUtil::StartOfDay ( const QDate & date )

Returns the start-moment of the day in local time.

QDateTime::QDateTime(const QDate& date) is deprecated since Qt 5.15. QDate::startOfDay() was introduced in Qt 5.14.

Definition at line 956 of file guiutil.cpp.

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◆ TextWidth()

int GUIUtil::TextWidth	(	const QFontMetrics &	fm,
		const QString &	text
	)

Returns the distance in pixels appropriate for drawing a subsequent character after text.

In Qt 5.12 and before the QFontMetrics::width() is used and it is deprecated since Qt 5.13. In Qt 5.11 the QFontMetrics::horizontalAdvance() was introduced.

Definition at line 911 of file guiutil.cpp.

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Variable Documentation

◆ dialog_flags

constexpr auto GUIUtil::dialog_flags = Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowCloseButtonHint

constexpr

Definition at line 60 of file guiutil.h.

Classes

Typedefs

Functions

Variables

Detailed Description

Typedef Documentation

◆ ProgressBar

Function Documentation

◆ AddButtonShortcut()

◆ blockingGUIThreadConnection()

◆ bringToFront()

◆ calculateIdealFontSize()

◆ checkPoint()

◆ ConnectionTypeToQString()

◆ copyEntryData()

◆ dateTimeStr() [1/2]

◆ dateTimeStr() [2/2]

◆ DummyAddress()

◆ ExceptionSafeConnect()

◆ ExtractFirstSuffixFromFilter()

◆ fixedPitchFont()

◆ formatBitcoinURI()

◆ formatBytes()

◆ formatDurationStr()

◆ formatNiceTimeOffset()

◆ FormatPeerAge()

◆ formatPingTime()

◆ formatServicesStr()

◆ formatTimeOffset()

◆ getDefaultDataDirectory()

◆ getEntryData()

◆ GetImage()

◆ getOpenFileName()

◆ getSaveFileName()

◆ GetStartOnSystemStartup()

◆ handleCloseWindowShortcut()

◆ hasEntryData()

◆ HasPixmap()

◆ HtmlEscape() [1/2]

◆ HtmlEscape() [2/2]

◆ isDust()

◆ IsEscapeOrBack()

◆ isObscured()

◆ LoadFont()

◆ LogQtInfo()

◆ MakeHtmlLink()

◆ NetworkToQString()

◆ openBitcoinConf()

◆ openDebugLogfile()

◆ parseBitcoinURI() [1/2]

◆ parseBitcoinURI() [2/2]

◆ PathToQString()

◆ PolishProgressDialog()

◆ PopupMenu()

◆ PrintSlotException()

◆ QStringToPath()

◆ setClipboard()

◆ SetStartOnSystemStartup()

◆ setupAddressWidget()

◆ ShowModalDialogAsynchronously()

◆ SplitSkipEmptyParts()

◆ StartOfDay()

◆ TextWidth()

Variable Documentation

◆ dialog_flags