guiutil.h

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// Copyright (c) 2011-2018 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_NAMESPACE
class QAbstractItemView;
class QDateTime;
class QFont;
class QLineEdit;
class QUrl;
class QWidget;
QT_END_NAMESPACE

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);

    // HTML escaping for rich text controls
    QString HtmlEscape(const QString& str, bool fMultiLine=false);
    QString HtmlEscape(const std::string& str, bool fMultiLine=false);

    void copyEntryData(QAbstractItemView *view, int column, int role=Qt::EditRole);

    QList<QModelIndex> getEntryData(QAbstractItemView *view, int column);

    void setClipboard(const QString& str);

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

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

    Qt::ConnectionType blockingGUIThreadConnection();

    // Determine whether a widget is hidden behind other windows
    bool isObscured(QWidget *w);

    // Open debug.log
    void openDebugLogfile();

    // Open the config file
    bool openBitcoinConf();

    class ToolTipToRichTextFilter : public QObject
    {
        Q_OBJECT

    public:
        explicit ToolTipToRichTextFilter(int size_threshold, QObject *parent = 0);

    protected:
        bool eventFilter(QObject *obj, QEvent *evt);

    private:
        int size_threshold;
    };

    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 CNodeCombinedStats.dPingTime into a user-readable string or display N/A, if 0*/
    QString formatPingTime(double dPingTime);

    /* 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:
        void clicked(const QPoint& point);
    protected:
        void mouseReleaseEvent(QMouseEvent *event);
    };

    class ClickableProgressBar : public QProgressBar
    {
        Q_OBJECT

    Q_SIGNALS:
        void clicked(const QPoint& point);
    protected:
        void mouseReleaseEvent(QMouseEvent *event);
    };

    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);
    };
} // namespace GUIUtil

#endif // BITCOIN_QT_GUIUTIL_H