Bitcoin Core  21.99.0
P2P Digital Currency
Classes | Typedefs | Functions | Variables
GUIUtil Namespace Reference

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

Classes

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

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)
 
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...
 
QString getDefaultDataDirectory ()
 Determine default data directory for operating system. 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 qstringToBoostPath (const QString &path)
 Convert QString to OS specific boost path through UTF-8. More...
 
QString boostPathToQString (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 (int secs)
 Convert seconds into a QString with days, hours, mins, secs. 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)
 
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 Fn >
void ObjectInvoke (QObject *object, Fn &&function, Qt::ConnectionType connection=Qt::QueuedConnection)
 Queue a function to run in an object's event loop. 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...
 

Variables

static const uint8_t dummydata [] = {0xeb,0x15,0x23,0x1d,0xfc,0xeb,0x60,0x92,0x58,0x86,0xb6,0x7d,0x06,0x52,0x99,0x92,0x59,0x15,0xae,0xb1,0x72,0xc0,0x66,0x47}
 
constexpr auto dialog_flags = Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowCloseButtonHint
 

Detailed Description

Utility functions used by the Bitcoin Qt UI.

Typedef Documentation

◆ ProgressBar

Definition at line 250 of file guiutil.h.

Function Documentation

◆ 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 349 of file guiutil.cpp.

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◆ boostPathToQString()

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

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

Definition at line 645 of file guiutil.cpp.

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◆ bringToFront()

void GUIUtil::bringToFront ( QWidget *  w)

Definition at line 377 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 777 of file guiutil.cpp.

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◆ checkPoint()

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

Definition at line 361 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 665 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]columnData column to extract from the model
[in]roleData role to extract from the model
See also
TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress

Definition at line 240 of file guiutil.cpp.

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◆ dateTimeStr() [1/2]

QString GUIUtil::dateTimeStr ( const QDateTime &  date)

Definition at line 75 of file guiutil.cpp.

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◆ dateTimeStr() [2/2]

QString GUIUtil::dateTimeStr ( qint64  nTime)

Definition at line 80 of file guiutil.cpp.

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◆ DummyAddress()

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

Definition at line 97 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 353 of file guiutil.h.

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◆ fixedPitchFont()

QFont GUIUtil::fixedPitchFont ( bool  use_embedded_font)

Definition at line 85 of file guiutil.cpp.

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◆ formatBitcoinURI()

QString GUIUtil::formatBitcoinURI ( const SendCoinsRecipient info)

Definition at line 187 of file guiutil.cpp.

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◆ formatBytes()

QString GUIUtil::formatBytes ( uint64_t  bytes)

Definition at line 765 of file guiutil.cpp.

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◆ formatDurationStr()

QString GUIUtil::formatDurationStr ( int  secs)

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

Definition at line 682 of file guiutil.cpp.

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◆ formatNiceTimeOffset()

QString GUIUtil::formatNiceTimeOffset ( qint64  secs)

Definition at line 728 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 716 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 702 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 723 of file guiutil.cpp.

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◆ getDefaultDataDirectory()

QString GUIUtil::getDefaultDataDirectory ( )

Determine default data directory for operating system.

Definition at line 267 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]columnData column to extract from the model
See also
TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress

Definition at line 253 of file guiutil.cpp.

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◆ GetImage()

QImage GUIUtil::GetImage ( const QLabel *  label)

Definition at line 888 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]parentParent window (or 0)
[in]captionWindow caption (or empty, for default)
[in]dirStarting directory (or empty, to default to documents directory)
[in]filterFilter specification such as "Comma Separated Files (*.csv)"
[out]selectedSuffixOutPointer 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 318 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]parentParent window (or 0)
[in]captionWindow caption (or empty, for default)
[in]dirStarting directory (or empty, to default to documents directory)
[in]filterFilter specification such as "Comma Separated Files (*.csv)"
[out]selectedSuffixOutPointer 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 272 of file guiutil.cpp.

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◆ GetStartOnSystemStartup()

bool GUIUtil::GetStartOnSystemStartup ( )

Definition at line 626 of file guiutil.cpp.

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◆ handleCloseWindowShortcut()

void GUIUtil::handleCloseWindowShortcut ( QWidget *  w)

Definition at line 395 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]columnData column to extract from the model
[in]roleData role to extract from the model
See also
TransactionView::contextualMenu

Definition at line 260 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 879 of file guiutil.cpp.

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◆ HtmlEscape() [1/2]

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

Definition at line 225 of file guiutil.cpp.

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◆ HtmlEscape() [2/2]

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

Definition at line 235 of file guiutil.cpp.

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◆ isDust()

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

Definition at line 217 of file guiutil.cpp.

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◆ isObscured()

bool GUIUtil::isObscured ( QWidget *  w)

Definition at line 368 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 830 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 901 of file guiutil.cpp.

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◆ NetworkToQString()

QString GUIUtil::NetworkToQString ( Network  net)

Convert enum Network to QString.

Definition at line 650 of file guiutil.cpp.

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◆ ObjectInvoke()

template<typename Fn >
void GUIUtil::ObjectInvoke ( QObject *  object,
Fn &&  function,
Qt::ConnectionType  connection = Qt::QueuedConnection 
)

Queue a function to run in an object's event loop.

This can be replaced by a call to the QMetaObject::invokeMethod functor overload after Qt 5.10, but for now use a QObject::connect for compatibility with older Qt versions, based on https://stackoverflow.com/questions/21646467/how-to-execute-a-functor-or-a-lambda-in-a-given-thread-in-qt-gcd-style

Definition at line 329 of file guiutil.h.

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◆ openBitcoinConf()

bool GUIUtil::openBitcoinConf ( )

Definition at line 409 of file guiutil.cpp.

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◆ openDebugLogfile()

void GUIUtil::openDebugLogfile ( )

Definition at line 400 of file guiutil.cpp.

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◆ parseBitcoinURI() [1/2]

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

Definition at line 124 of file guiutil.cpp.

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◆ parseBitcoinURI() [2/2]

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

Definition at line 181 of file guiutil.cpp.

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◆ PolishProgressDialog()

void GUIUtil::PolishProgressDialog ( QProgressDialog *  dialog)

Definition at line 809 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 863 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 908 of file guiutil.cpp.

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◆ qstringToBoostPath()

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

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

Definition at line 640 of file guiutil.cpp.

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◆ setClipboard()

void GUIUtil::setClipboard ( const QString &  str)

Definition at line 631 of file guiutil.cpp.

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◆ SetStartOnSystemStartup()

bool GUIUtil::SetStartOnSystemStartup ( bool  fAutoStart)

Definition at line 627 of file guiutil.cpp.

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◆ setupAddressWidget()

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

Definition at line 111 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 313 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 870 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 821 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 56 of file guiutil.h.

◆ dummydata

const uint8_t GUIUtil::dummydata[] = {0xeb,0x15,0x23,0x1d,0xfc,0xeb,0x60,0x92,0x58,0x86,0xb6,0x7d,0x06,0x52,0x99,0x92,0x59,0x15,0xae,0xb1,0x72,0xc0,0x66,0x47}
static

Definition at line 94 of file guiutil.cpp.