git / moonbite-core / src/qt/guiutil.h · raw

// Copyright (c) 2011-2020 The Bitcoin Core developers// Distributed under the MIT software license, see the accompanying// file COPYING or http://www.opensource.org/licenses/mit-license.php.#ifndef BITCOIN_QT_GUIUTIL_H#define BITCOIN_QT_GUIUTIL_H#include <amount.h>#include <fs.h>#include <QEvent>#include <QHeaderView>#include <QItemDelegate>#include <QMessageBox>#include <QObject>#include <QProgressBar>#include <QString>#include <QTableView>#include <QLabel>class QValidatedLineEdit;class SendCoinsRecipient;namespace interfaces{    class Node;}QT_BEGIN_NAMESPACEclass QAbstractItemView;class QAction;class QDateTime;class QFont;class QLineEdit;class QMenu;class QPoint;class QProgressDialog;class QUrl;class QWidget;QT_END_NAMESPACE/** Utility functions used by the Bitcoin Qt UI. */namespace GUIUtil{    // Create human-readable string from date    QString dateTimeStr(const QDateTime &datetime);    QString dateTimeStr(qint64 nTime);    // Return a monospace font    QFont fixedPitchFont();    // Set up widget for address    void setupAddressWidget(QValidatedLineEdit *widget, QWidget *parent);    // Parse "bitcoin:" URI into recipient object, return true on successful parsing    bool parseBitcoinURI(const QUrl &uri, SendCoinsRecipient *out);    bool parseBitcoinURI(QString uri, SendCoinsRecipient *out);    QString formatBitcoinURI(const SendCoinsRecipient &info);    // Returns true if given address+amount meets "dust" definition    bool isDust(interfaces::Node& node, const QString& address, const CAmount& amount);    // Returns true if address is of type StealthAddress and MWEB has not yet been activated.    bool isMWEBAddressBeforeActivated(interfaces::Node& node, const QString& address);    // HTML escaping for rich text controls    QString HtmlEscape(const QString& str, bool fMultiLine=false);    QString HtmlEscape(const std::string& str, bool fMultiLine=false);    /** Copy a field of the currently selected entry of a view to the clipboard. Does nothing if nothing        is selected.       @param[in] column  Data column to extract from the model       @param[in] role    Data role to extract from the model       @see  TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress     */    void copyEntryData(const QAbstractItemView *view, int column, int role=Qt::EditRole);    /** Return a field of the currently selected entry as a QString. Does nothing if nothing        is selected.       @param[in] column  Data column to extract from the model       @see  TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress     */    QList<QModelIndex> getEntryData(const QAbstractItemView *view, int column);    /** Returns true if the specified field of the currently selected view entry is not empty.       @param[in] column  Data column to extract from the model       @param[in] role    Data role to extract from the model       @see  TransactionView::contextualMenu     */    bool hasEntryData(const QAbstractItemView *view, int column, int role);    void setClipboard(const QString& str);    /**     * Determine default data directory for operating system.     */    QString getDefaultDataDirectory();    /** Get save filename, mimics QFileDialog::getSaveFileName, except that it appends a default suffix        when no suffix is provided by the user.      @param[in] parent  Parent window (or 0)      @param[in] caption Window caption (or empty, for default)      @param[in] dir     Starting directory (or empty, to default to documents directory)      @param[in] filter  Filter specification such as "Comma Separated Files (*.csv)"      @param[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.     */    QString getSaveFileName(QWidget *parent, const QString &caption, const QString &dir,        const QString &filter,        QString *selectedSuffixOut);    /** Get open filename, convenience wrapper for QFileDialog::getOpenFileName.      @param[in] parent  Parent window (or 0)      @param[in] caption Window caption (or empty, for default)      @param[in] dir     Starting directory (or empty, to default to documents directory)      @param[in] filter  Filter specification such as "Comma Separated Files (*.csv)"      @param[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.     */    QString getOpenFileName(QWidget *parent, const QString &caption, const QString &dir,        const QString &filter,        QString *selectedSuffixOut);    /** 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.    */    Qt::ConnectionType blockingGUIThreadConnection();    // Determine whether a widget is hidden behind other windows    bool isObscured(QWidget *w);    // Activate, show and raise the widget    void bringToFront(QWidget* w);    // Set shortcut to close window    void handleCloseWindowShortcut(QWidget* w);    // Open debug.log    void openDebugLogfile();    // Open the config file    bool openBitcoinConf();    /** Qt event filter that intercepts ToolTipChange events, and replaces the tooltip with a rich text      representation if needed. This assures that Qt can word-wrap long tooltip messages.      Tooltips longer than the provided size threshold (in characters) are wrapped.     */    class ToolTipToRichTextFilter : public QObject    {        Q_OBJECT    public:        explicit ToolTipToRichTextFilter(int size_threshold, QObject *parent = nullptr);    protected:        bool eventFilter(QObject *obj, QEvent *evt) override;    private:        int size_threshold;    };    /**     * Qt event filter that intercepts QEvent::FocusOut events for QLabel objects, and     * resets their `textInteractionFlags' property to get rid of the visible cursor.     *     * This is a temporary fix of QTBUG-59514.     */    class LabelOutOfFocusEventFilter : public QObject    {        Q_OBJECT    public:        explicit LabelOutOfFocusEventFilter(QObject* parent);        bool eventFilter(QObject* watched, QEvent* event) override;    };    /**     * Makes a QTableView last column feel as if it was being resized from its left border.     * Also makes sure the column widths are never larger than the table's viewport.     * In Qt, all columns are resizable from the right, but it's not intuitive resizing the last column from the right.     * Usually our second to last columns behave as if stretched, and when on stretch mode, columns aren't resizable     * interactively or programmatically.     *     * This helper object takes care of this issue.     *     */    class TableViewLastColumnResizingFixer: public QObject    {        Q_OBJECT        public:            TableViewLastColumnResizingFixer(QTableView* table, int lastColMinimumWidth, int allColsMinimumWidth, QObject *parent);            void stretchColumnWidth(int column);        private:            QTableView* tableView;            int lastColumnMinimumWidth;            int allColumnsMinimumWidth;            int lastColumnIndex;            int columnCount;            int secondToLastColumnIndex;            void adjustTableColumnsWidth();            int getAvailableWidthForColumn(int column);            int getColumnsWidth();            void connectViewHeadersSignals();            void disconnectViewHeadersSignals();            void setViewHeaderResizeMode(int logicalIndex, QHeaderView::ResizeMode resizeMode);            void resizeColumn(int nColumnIndex, int width);        private Q_SLOTS:            void on_sectionResized(int logicalIndex, int oldSize, int newSize);            void on_geometriesChanged();    };    bool GetStartOnSystemStartup();    bool SetStartOnSystemStartup(bool fAutoStart);    /* Convert QString to OS specific boost path through UTF-8 */    fs::path qstringToBoostPath(const QString &path);    /* Convert OS specific boost path to QString through UTF-8 */    QString boostPathToQString(const fs::path &path);    /* Convert seconds into a QString with days, hours, mins, secs */    QString formatDurationStr(int secs);    /* Format CNodeStats.nServices bitmask into a user-readable string */    QString formatServicesStr(quint64 mask);    /* Format a CNodeStats.m_ping_usec into a user-readable string or display N/A, if 0*/    QString formatPingTime(int64_t ping_usec);    /* Format a CNodeCombinedStats.nTimeOffset into a user-readable string. */    QString formatTimeOffset(int64_t nTimeOffset);    QString formatNiceTimeOffset(qint64 secs);    QString formatBytes(uint64_t bytes);    qreal calculateIdealFontSize(int width, const QString& text, QFont font, qreal minPointSize = 4, qreal startPointSize = 14);    class ClickableLabel : public QLabel    {        Q_OBJECT    Q_SIGNALS:        /** Emitted when the label is clicked. The relative mouse coordinates of the click are         * passed to the signal.         */        void clicked(const QPoint& point);    protected:        void mouseReleaseEvent(QMouseEvent *event) override;    };    class ClickableProgressBar : public QProgressBar    {        Q_OBJECT    Q_SIGNALS:        /** Emitted when the progressbar is clicked. The relative mouse coordinates of the click are         * passed to the signal.         */        void clicked(const QPoint& point);    protected:        void mouseReleaseEvent(QMouseEvent *event) override;    };    typedef ClickableProgressBar ProgressBar;    class ItemDelegate : public QItemDelegate    {        Q_OBJECT    public:        ItemDelegate(QObject* parent) : QItemDelegate(parent) {}    Q_SIGNALS:        void keyEscapePressed();    private:        bool eventFilter(QObject *object, QEvent *event) override;    };    // Fix known bugs in QProgressDialog class.    void PolishProgressDialog(QProgressDialog* dialog);    /**     * 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 13.0.     * In Qt 5.11 the QFontMetrics::horizontalAdvance() was introduced.     */    int TextWidth(const QFontMetrics& fm, const QString& text);    /**     * Writes to debug.log short info about the used Qt and the host system.     */    void LogQtInfo();    /**     * Call QMenu::popup() only on supported QT_QPA_PLATFORM.     */    void PopupMenu(QMenu* menu, const QPoint& point, QAction* at_action = nullptr);} // namespace GUIUtil#endif // BITCOIN_QT_GUIUTIL_H