1 files changed, 994 insertions, 0 deletions

diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
new file mode 100644
index 000000000..0beaddf99
--- /dev/null
+++ b/src/qt/guiutil.cpp
@@ -0,0 +1,994 @@
+// Copyright (c) 2011-2015 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "guiutil.h"
+
+#include "bitcoinaddressvalidator.h"
+#include "bitcoinunits.h"
+#include "qvalidatedlineedit.h"
+#include "walletmodel.h"
+
+#include "primitives/transaction.h"
+#include "init.h"
+#include "main.h" // For minRelayTxFee
+#include "protocol.h"
+#include "script/script.h"
+#include "script/standard.h"
+#include "util.h"
+
+#ifdef WIN32
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#endif
+#define _WIN32_WINNT 0x0501
+#ifdef _WIN32_IE
+#undef _WIN32_IE
+#endif
+#define _WIN32_IE 0x0501
+#define WIN32_LEAN_AND_MEAN 1
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include "shellapi.h"
+#include "shlobj.h"
+#include "shlwapi.h"
+#endif
+
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/fstream.hpp>
+#if BOOST_FILESYSTEM_VERSION >= 3
+#include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
+#endif
+#include <boost/scoped_array.hpp>
+
+#include <QAbstractItemView>
+#include <QApplication>
+#include <QClipboard>
+#include <QDateTime>
+#include <QDesktopServices>
+#include <QDesktopWidget>
+#include <QDoubleValidator>
+#include <QFileDialog>
+#include <QFont>
+#include <QLineEdit>
+#include <QSettings>
+#include <QTextDocument> // for Qt::mightBeRichText
+#include <QThread>
+
+#if QT_VERSION < 0x050000
+#include <QUrl>
+#else
+#include <QUrlQuery>
+#endif
+
+#if QT_VERSION >= 0x50200
+#include <QFontDatabase>
+#endif
+
+#if BOOST_FILESYSTEM_VERSION >= 3
+static boost::filesystem::detail::utf8_codecvt_facet utf8;
+#endif
+
+#if defined(Q_OS_MAC)
+extern double NSAppKitVersionNumber;
+#if !defined(NSAppKitVersionNumber10_8)
+#define NSAppKitVersionNumber10_8 1187
+#endif
+#if !defined(NSAppKitVersionNumber10_9)
+#define NSAppKitVersionNumber10_9 1265
+#endif
+#endif
+
+namespace GUIUtil {
+
+QString dateTimeStr(const QDateTime &date)
+{
+    return date.date().toString(Qt::SystemLocaleShortDate) + QString(" ") + date.toString("hh:mm");
+}
+
+QString dateTimeStr(qint64 nTime)
+{
+    return dateTimeStr(QDateTime::fromTime_t((qint32)nTime));
+}
+
+QFont fixedPitchFont()
+{
+#if QT_VERSION >= 0x50200
+    return QFontDatabase::systemFont(QFontDatabase::FixedFont);
+#else
+    QFont font("Monospace");
+#if QT_VERSION >= 0x040800
+    font.setStyleHint(QFont::Monospace);
+#else
+    font.setStyleHint(QFont::TypeWriter);
+#endif
+    return font;
+#endif
+}
+
+// Just some dummy data to generate an convincing random-looking (but consistent) address
+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};
+
+// Generate a dummy address with invalid CRC, starting with the network prefix.
+static std::string DummyAddress(const CChainParams &params)
+{
+    std::vector<unsigned char> sourcedata = params.Base58Prefix(CChainParams::PUBKEY_ADDRESS);
+    sourcedata.insert(sourcedata.end(), dummydata, dummydata + sizeof(dummydata));
+    for(int i=0; i<256; ++i) { // Try every trailing byte
+        std::string s = EncodeBase58(begin_ptr(sourcedata), end_ptr(sourcedata));
+        if (!CBitcoinAddress(s).IsValid())
+            return s;
+        sourcedata[sourcedata.size()-1] += 1;
+    }
+    return "";
+}
+
+void setupAddressWidget(QValidatedLineEdit *widget, QWidget *parent)
+{
+    parent->setFocusProxy(widget);
+
+    widget->setFont(fixedPitchFont());
+#if QT_VERSION >= 0x040700
+    // We don't want translators to use own addresses in translations
+    // and this is the only place, where this address is supplied.
+    widget->setPlaceholderText(QObject::tr("Enter a Bitcoin address (e.g. %1)").arg(
+        QString::fromStdString(DummyAddress(Params()))));
+#endif
+    widget->setValidator(new BitcoinAddressEntryValidator(parent));
+    widget->setCheckValidator(new BitcoinAddressCheckValidator(parent));
+}
+
+void setupAmountWidget(QLineEdit *widget, QWidget *parent)
+{
+    QDoubleValidator *amountValidator = new QDoubleValidator(parent);
+    amountValidator->setDecimals(8);
+    amountValidator->setBottom(0.0);
+    widget->setValidator(amountValidator);
+    widget->setAlignment(Qt::AlignRight|Qt::AlignVCenter);
+}
+
+bool parseBitcoinURI(const QUrl &uri, SendCoinsRecipient *out)
+{
+    // return if URI is not valid or is no bitcoin: URI
+    if(!uri.isValid() || uri.scheme() != QString("bitcoin"))
+        return false;
+
+    SendCoinsRecipient rv;
+    rv.address = uri.path();
+    // Trim any following forward slash which may have been added by the OS
+    if (rv.address.endsWith("/")) {
+        rv.address.truncate(rv.address.length() - 1);
+    }
+    rv.amount = 0;
+
+#if QT_VERSION < 0x050000
+    QList<QPair<QString, QString> > items = uri.queryItems();
+#else
+    QUrlQuery uriQuery(uri);
+    QList<QPair<QString, QString> > items = uriQuery.queryItems();
+#endif
+    for (QList<QPair<QString, QString> >::iterator i = items.begin(); i != items.end(); i++)
+    {
+        bool fShouldReturnFalse = false;
+        if (i->first.startsWith("req-"))
+        {
+            i->first.remove(0, 4);
+            fShouldReturnFalse = true;
+        }
+
+        if (i->first == "label")
+        {
+            rv.label = i->second;
+            fShouldReturnFalse = false;
+        }
+        if (i->first == "message")
+        {
+            rv.message = i->second;
+            fShouldReturnFalse = false;
+        }
+        else if (i->first == "amount")
+        {
+            if(!i->second.isEmpty())
+            {
+                if(!BitcoinUnits::parse(BitcoinUnits::BTC, i->second, &rv.amount))
+                {
+                    return false;
+                }
+            }
+            fShouldReturnFalse = false;
+        }
+
+        if (fShouldReturnFalse)
+            return false;
+    }
+    if(out)
+    {
+        *out = rv;
+    }
+    return true;
+}
+
+bool parseBitcoinURI(QString uri, SendCoinsRecipient *out)
+{
+    // Convert bitcoin:// to bitcoin:
+    //
+    //    Cannot handle this later, because bitcoin:// will cause Qt to see the part after // as host,
+    //    which will lower-case it (and thus invalidate the address).
+    if(uri.startsWith("bitcoin://", Qt::CaseInsensitive))
+    {
+        uri.replace(0, 10, "bitcoin:");
+    }
+    QUrl uriInstance(uri);
+    return parseBitcoinURI(uriInstance, out);
+}
+
+QString formatBitcoinURI(const SendCoinsRecipient &info)
+{
+    QString ret = QString("bitcoin:%1").arg(info.address);
+    int paramCount = 0;
+
+    if (info.amount)
+    {
+        ret += QString("?amount=%1").arg(BitcoinUnits::format(BitcoinUnits::BTC, info.amount, false, BitcoinUnits::separatorNever));
+        paramCount++;
+    }
+
+    if (!info.label.isEmpty())
+    {
+        QString lbl(QUrl::toPercentEncoding(info.label));
+        ret += QString("%1label=%2").arg(paramCount == 0 ? "?" : "&").arg(lbl);
+        paramCount++;
+    }
+
+    if (!info.message.isEmpty())
+    {
+        QString msg(QUrl::toPercentEncoding(info.message));
+        ret += QString("%1message=%2").arg(paramCount == 0 ? "?" : "&").arg(msg);
+        paramCount++;
+    }
+
+    return ret;
+}
+
+bool isDust(const QString& address, const CAmount& amount)
+{
+    CTxDestination dest = CBitcoinAddress(address.toStdString()).Get();
+    CScript script = GetScriptForDestination(dest);
+    CTxOut txOut(amount, script);
+    return txOut.IsDust(::minRelayTxFee);
+}
+
+QString HtmlEscape(const QString& str, bool fMultiLine)
+{
+#if QT_VERSION < 0x050000
+    QString escaped = Qt::escape(str);
+#else
+    QString escaped = str.toHtmlEscaped();
+#endif
+    if(fMultiLine)
+    {
+        escaped = escaped.replace("\n", "<br>\n");
+    }
+    return escaped;
+}
+
+QString HtmlEscape(const std::string& str, bool fMultiLine)
+{
+    return HtmlEscape(QString::fromStdString(str), fMultiLine);
+}
+
+void copyEntryData(QAbstractItemView *view, int column, int role)
+{
+    if(!view || !view->selectionModel())
+        return;
+    QModelIndexList selection = view->selectionModel()->selectedRows(column);
+
+    if(!selection.isEmpty())
+    {
+        // Copy first item
+        setClipboard(selection.at(0).data(role).toString());
+    }
+}
+
+QVariant getEntryData(QAbstractItemView *view, int column, int role)
+{
+    if(!view || !view->selectionModel())
+        return QVariant();
+    QModelIndexList selection = view->selectionModel()->selectedRows(column);
+
+    if(!selection.isEmpty()) {
+        // Return first item
+        return (selection.at(0).data(role));
+    }
+    return QVariant();
+}
+
+QString getSaveFileName(QWidget *parent, const QString &caption, const QString &dir,
+    const QString &filter,
+    QString *selectedSuffixOut)
+{
+    QString selectedFilter;
+    QString myDir;
+    if(dir.isEmpty()) // Default to user documents location
+    {
+#if QT_VERSION < 0x050000
+        myDir = QDesktopServices::storageLocation(QDesktopServices::DocumentsLocation);
+#else
+        myDir = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
+#endif
+    }
+    else
+    {
+        myDir = dir;
+    }
+    /* Directly convert path to native OS path separators */
+    QString result = QDir::toNativeSeparators(QFileDialog::getSaveFileName(parent, caption, myDir, filter, &selectedFilter));
+
+    /* Extract first suffix from filter pattern "Description (*.foo)" or "Description (*.foo *.bar ...) */
+    QRegExp filter_re(".* \\(\\*\\.(.*)[ \\)]");
+    QString selectedSuffix;
+    if(filter_re.exactMatch(selectedFilter))
+    {
+        selectedSuffix = filter_re.cap(1);
+    }
+
+    /* Add suffix if needed */
+    QFileInfo info(result);
+    if(!result.isEmpty())
+    {
+        if(info.suffix().isEmpty() && !selectedSuffix.isEmpty())
+        {
+            /* No suffix specified, add selected suffix */
+            if(!result.endsWith("."))
+                result.append(".");
+            result.append(selectedSuffix);
+        }
+    }
+
+    /* Return selected suffix if asked to */
+    if(selectedSuffixOut)
+    {
+        *selectedSuffixOut = selectedSuffix;
+    }
+    return result;
+}
+
+QString getOpenFileName(QWidget *parent, const QString &caption, const QString &dir,
+    const QString &filter,
+    QString *selectedSuffixOut)
+{
+    QString selectedFilter;
+    QString myDir;
+    if(dir.isEmpty()) // Default to user documents location
+    {
+#if QT_VERSION < 0x050000
+        myDir = QDesktopServices::storageLocation(QDesktopServices::DocumentsLocation);
+#else
+        myDir = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
+#endif
+    }
+    else
+    {
+        myDir = dir;
+    }
+    /* Directly convert path to native OS path separators */
+    QString result = QDir::toNativeSeparators(QFileDialog::getOpenFileName(parent, caption, myDir, filter, &selectedFilter));
+
+    if(selectedSuffixOut)
+    {
+        /* Extract first suffix from filter pattern "Description (*.foo)" or "Description (*.foo *.bar ...) */
+        QRegExp filter_re(".* \\(\\*\\.(.*)[ \\)]");
+        QString selectedSuffix;
+        if(filter_re.exactMatch(selectedFilter))
+        {
+            selectedSuffix = filter_re.cap(1);
+        }
+        *selectedSuffixOut = selectedSuffix;
+    }
+    return result;
+}
+
+Qt::ConnectionType blockingGUIThreadConnection()
+{
+    if(QThread::currentThread() != qApp->thread())
+    {
+        return Qt::BlockingQueuedConnection;
+    }
+    else
+    {
+        return Qt::DirectConnection;
+    }
+}
+
+bool checkPoint(const QPoint &p, const QWidget *w)
+{
+    QWidget *atW = QApplication::widgetAt(w->mapToGlobal(p));
+    if (!atW) return false;
+    return atW->topLevelWidget() == w;
+}
+
+bool isObscured(QWidget *w)
+{
+    return !(checkPoint(QPoint(0, 0), w)
+        && checkPoint(QPoint(w->width() - 1, 0), w)
+        && checkPoint(QPoint(0, w->height() - 1), w)
+        && checkPoint(QPoint(w->width() - 1, w->height() - 1), w)
+        && checkPoint(QPoint(w->width() / 2, w->height() / 2), w));
+}
+
+void openDebugLogfile()
+{
+    boost::filesystem::path pathDebug = GetDataDir() / "debug.log";
+
+    /* Open debug.log with the associated application */
+    if (boost::filesystem::exists(pathDebug))
+        QDesktopServices::openUrl(QUrl::fromLocalFile(boostPathToQString(pathDebug)));
+}
+
+void SubstituteFonts(const QString& language)
+{
+#if defined(Q_OS_MAC)
+// Background:
+// OSX's default font changed in 10.9 and Qt is unable to find it with its
+// usual fallback methods when building against the 10.7 sdk or lower.
+// The 10.8 SDK added a function to let it find the correct fallback font.
+// If this fallback is not properly loaded, some characters may fail to
+// render correctly.
+//
+// The same thing happened with 10.10. .Helvetica Neue DeskInterface is now default.
+//
+// Solution: If building with the 10.7 SDK or lower and the user's platform
+// is 10.9 or higher at runtime, substitute the correct font. This needs to
+// happen before the QApplication is created.
+#if defined(MAC_OS_X_VERSION_MAX_ALLOWED) && MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_8
+    if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_8)
+    {
+        if (floor(NSAppKitVersionNumber) <= NSAppKitVersionNumber10_9)
+            /* On a 10.9 - 10.9.x system */
+            QFont::insertSubstitution(".Lucida Grande UI", "Lucida Grande");
+        else
+        {
+            /* 10.10 or later system */
+            if (language == "zh_CN" || language == "zh_TW" || language == "zh_HK") // traditional or simplified Chinese
+              QFont::insertSubstitution(".Helvetica Neue DeskInterface", "Heiti SC");
+            else if (language == "ja") // Japanesee
+              QFont::insertSubstitution(".Helvetica Neue DeskInterface", "Songti SC");
+            else
+              QFont::insertSubstitution(".Helvetica Neue DeskInterface", "Lucida Grande");
+        }
+    }
+#endif
+#endif
+}
+
+ToolTipToRichTextFilter::ToolTipToRichTextFilter(int _size_threshold, QObject *parent) :
+    QObject(parent),
+    size_threshold(_size_threshold)
+{
+
+}
+
+bool ToolTipToRichTextFilter::eventFilter(QObject *obj, QEvent *evt)
+{
+    if(evt->type() == QEvent::ToolTipChange)
+    {
+        QWidget *widget = static_cast<QWidget*>(obj);
+        QString tooltip = widget->toolTip();
+        if(tooltip.size() > size_threshold && !tooltip.startsWith("<qt") && !Qt::mightBeRichText(tooltip))
+        {
+            // Envelop with <qt></qt> to make sure Qt detects this as rich text
+            // Escape the current message as HTML and replace \n by <br>
+            tooltip = "<qt>" + HtmlEscape(tooltip, true) + "</qt>";
+            widget->setToolTip(tooltip);
+            return true;
+        }
+    }
+    return QObject::eventFilter(obj, evt);
+}
+
+void TableViewLastColumnResizingFixer::connectViewHeadersSignals()
+{
+    connect(tableView->horizontalHeader(), SIGNAL(sectionResized(int,int,int)), this, SLOT(on_sectionResized(int,int,int)));
+    connect(tableView->horizontalHeader(), SIGNAL(geometriesChanged()), this, SLOT(on_geometriesChanged()));
+}
+
+// We need to disconnect these while handling the resize events, otherwise we can enter infinite loops.
+void TableViewLastColumnResizingFixer::disconnectViewHeadersSignals()
+{
+    disconnect(tableView->horizontalHeader(), SIGNAL(sectionResized(int,int,int)), this, SLOT(on_sectionResized(int,int,int)));
+    disconnect(tableView->horizontalHeader(), SIGNAL(geometriesChanged()), this, SLOT(on_geometriesChanged()));
+}
+
+// Setup the resize mode, handles compatibility for Qt5 and below as the method signatures changed.
+// Refactored here for readability.
+void TableViewLastColumnResizingFixer::setViewHeaderResizeMode(int logicalIndex, QHeaderView::ResizeMode resizeMode)
+{
+#if QT_VERSION < 0x050000
+    tableView->horizontalHeader()->setResizeMode(logicalIndex, resizeMode);
+#else
+    tableView->horizontalHeader()->setSectionResizeMode(logicalIndex, resizeMode);
+#endif
+}
+
+void TableViewLastColumnResizingFixer::resizeColumn(int nColumnIndex, int width)
+{
+    tableView->setColumnWidth(nColumnIndex, width);
+    tableView->horizontalHeader()->resizeSection(nColumnIndex, width);
+}
+
+int TableViewLastColumnResizingFixer::getColumnsWidth()
+{
+    int nColumnsWidthSum = 0;
+    for (int i = 0; i < columnCount; i++)
+    {
+        nColumnsWidthSum += tableView->horizontalHeader()->sectionSize(i);
+    }
+    return nColumnsWidthSum;
+}
+
+int TableViewLastColumnResizingFixer::getAvailableWidthForColumn(int column)
+{
+    int nResult = lastColumnMinimumWidth;
+    int nTableWidth = tableView->horizontalHeader()->width();
+
+    if (nTableWidth > 0)
+    {
+        int nOtherColsWidth = getColumnsWidth() - tableView->horizontalHeader()->sectionSize(column);
+        nResult = std::max(nResult, nTableWidth - nOtherColsWidth);
+    }
+
+    return nResult;
+}
+
+// Make sure we don't make the columns wider than the tables viewport width.
+void TableViewLastColumnResizingFixer::adjustTableColumnsWidth()
+{
+    disconnectViewHeadersSignals();
+    resizeColumn(lastColumnIndex, getAvailableWidthForColumn(lastColumnIndex));
+    connectViewHeadersSignals();
+
+    int nTableWidth = tableView->horizontalHeader()->width();
+    int nColsWidth = getColumnsWidth();
+    if (nColsWidth > nTableWidth)
+    {
+        resizeColumn(secondToLastColumnIndex,getAvailableWidthForColumn(secondToLastColumnIndex));
+    }
+}
+
+// Make column use all the space available, useful during window resizing.
+void TableViewLastColumnResizingFixer::stretchColumnWidth(int column)
+{
+    disconnectViewHeadersSignals();
+    resizeColumn(column, getAvailableWidthForColumn(column));
+    connectViewHeadersSignals();
+}
+
+// When a section is resized this is a slot-proxy for ajustAmountColumnWidth().
+void TableViewLastColumnResizingFixer::on_sectionResized(int logicalIndex, int oldSize, int newSize)
+{
+    adjustTableColumnsWidth();
+    int remainingWidth = getAvailableWidthForColumn(logicalIndex);
+    if (newSize > remainingWidth)
+    {
+       resizeColumn(logicalIndex, remainingWidth);
+    }
+}
+
+// When the tabless geometry is ready, we manually perform the stretch of the "Message" column,
+// as the "Stretch" resize mode does not allow for interactive resizing.
+void TableViewLastColumnResizingFixer::on_geometriesChanged()
+{
+    if ((getColumnsWidth() - this->tableView->horizontalHeader()->width()) != 0)
+    {
+        disconnectViewHeadersSignals();
+        resizeColumn(secondToLastColumnIndex, getAvailableWidthForColumn(secondToLastColumnIndex));
+        connectViewHeadersSignals();
+    }
+}
+
+/**
+ * Initializes all internal variables and prepares the
+ * the resize modes of the last 2 columns of the table and
+ */
+TableViewLastColumnResizingFixer::TableViewLastColumnResizingFixer(QTableView* table, int lastColMinimumWidth, int allColsMinimumWidth) :
+    tableView(table),
+    lastColumnMinimumWidth(lastColMinimumWidth),
+    allColumnsMinimumWidth(allColsMinimumWidth)
+{
+    columnCount = tableView->horizontalHeader()->count();
+    lastColumnIndex = columnCount - 1;
+    secondToLastColumnIndex = columnCount - 2;
+    tableView->horizontalHeader()->setMinimumSectionSize(allColumnsMinimumWidth);
+    setViewHeaderResizeMode(secondToLastColumnIndex, QHeaderView::Interactive);
+    setViewHeaderResizeMode(lastColumnIndex, QHeaderView::Interactive);
+}
+
+#ifdef WIN32
+boost::filesystem::path static StartupShortcutPath()
+{
+    std::string chain = ChainNameFromCommandLine();
+    if (chain == CBaseChainParams::MAIN)
+        return GetSpecialFolderPath(CSIDL_STARTUP) / "Bitcoin.lnk";
+    if (chain == CBaseChainParams::TESTNET) // Remove this special case when CBaseChainParams::TESTNET = "testnet4"
+        return GetSpecialFolderPath(CSIDL_STARTUP) / "Bitcoin (testnet).lnk";
+    return GetSpecialFolderPath(CSIDL_STARTUP) / strprintf("Bitcoin (%s).lnk", chain);
+}
+
+bool GetStartOnSystemStartup()
+{
+    // check for Bitcoin*.lnk
+    return boost::filesystem::exists(StartupShortcutPath());
+}
+
+bool SetStartOnSystemStartup(bool fAutoStart)
+{
+    // If the shortcut exists already, remove it for updating
+    boost::filesystem::remove(StartupShortcutPath());
+
+    if (fAutoStart)
+    {
+        CoInitialize(NULL);
+
+        // Get a pointer to the IShellLink interface.
+        IShellLink* psl = NULL;
+        HRESULT hres = CoCreateInstance(CLSID_ShellLink, NULL,
+            CLSCTX_INPROC_SERVER, IID_IShellLink,
+            reinterpret_cast<void**>(&psl));
+
+        if (SUCCEEDED(hres))
+        {
+            // Get the current executable path
+            TCHAR pszExePath[MAX_PATH];
+            GetModuleFileName(NULL, pszExePath, sizeof(pszExePath));
+
+            // Start client minimized
+            QString strArgs = "-min";
+            // Set -testnet /-regtest options
+            strArgs += QString::fromStdString(strprintf(" -testnet=%d -regtest=%d", GetBoolArg("-testnet", false), GetBoolArg("-regtest", false)));
+
+#ifdef UNICODE
+            boost::scoped_array<TCHAR> args(new TCHAR[strArgs.length() + 1]);
+            // Convert the QString to TCHAR*
+            strArgs.toWCharArray(args.get());
+            // Add missing '\0'-termination to string
+            args[strArgs.length()] = '\0';
+#endif
+
+            // Set the path to the shortcut target
+            psl->SetPath(pszExePath);
+            PathRemoveFileSpec(pszExePath);
+            psl->SetWorkingDirectory(pszExePath);
+            psl->SetShowCmd(SW_SHOWMINNOACTIVE);
+#ifndef UNICODE
+            psl->SetArguments(strArgs.toStdString().c_str());
+#else
+            psl->SetArguments(args.get());
+#endif
+
+            // Query IShellLink for the IPersistFile interface for
+            // saving the shortcut in persistent storage.
+            IPersistFile* ppf = NULL;
+            hres = psl->QueryInterface(IID_IPersistFile, reinterpret_cast<void**>(&ppf));
+            if (SUCCEEDED(hres))
+            {
+                WCHAR pwsz[MAX_PATH];
+                // Ensure that the string is ANSI.
+                MultiByteToWideChar(CP_ACP, 0, StartupShortcutPath().string().c_str(), -1, pwsz, MAX_PATH);
+                // Save the link by calling IPersistFile::Save.
+                hres = ppf->Save(pwsz, TRUE);
+                ppf->Release();
+                psl->Release();
+                CoUninitialize();
+                return true;
+            }
+            psl->Release();
+        }
+        CoUninitialize();
+        return false;
+    }
+    return true;
+}
+#elif defined(Q_OS_LINUX)
+
+// Follow the Desktop Application Autostart Spec:
+// http://standards.freedesktop.org/autostart-spec/autostart-spec-latest.html
+
+boost::filesystem::path static GetAutostartDir()
+{
+    namespace fs = boost::filesystem;
+
+    char* pszConfigHome = getenv("XDG_CONFIG_HOME");
+    if (pszConfigHome) return fs::path(pszConfigHome) / "autostart";
+    char* pszHome = getenv("HOME");
+    if (pszHome) return fs::path(pszHome) / ".config" / "autostart";
+    return fs::path();
+}
+
+boost::filesystem::path static GetAutostartFilePath()
+{
+    std::string chain = ChainNameFromCommandLine();
+    if (chain == CBaseChainParams::MAIN)
+        return GetAutostartDir() / "bitcoin.desktop";
+    return GetAutostartDir() / strprintf("bitcoin-%s.lnk", chain);
+}
+
+bool GetStartOnSystemStartup()
+{
+    boost::filesystem::ifstream optionFile(GetAutostartFilePath());
+    if (!optionFile.good())
+        return false;
+    // Scan through file for "Hidden=true":
+    std::string line;
+    while (!optionFile.eof())
+    {
+        getline(optionFile, line);
+        if (line.find("Hidden") != std::string::npos &&
+            line.find("true") != std::string::npos)
+            return false;
+    }
+    optionFile.close();
+
+    return true;
+}
+
+bool SetStartOnSystemStartup(bool fAutoStart)
+{
+    if (!fAutoStart)
+        boost::filesystem::remove(GetAutostartFilePath());
+    else
+    {
+        char pszExePath[MAX_PATH+1];
+        memset(pszExePath, 0, sizeof(pszExePath));
+        if (readlink("/proc/self/exe", pszExePath, sizeof(pszExePath)-1) == -1)
+            return false;
+
+        boost::filesystem::create_directories(GetAutostartDir());
+
+        boost::filesystem::ofstream optionFile(GetAutostartFilePath(), std::ios_base::out|std::ios_base::trunc);
+        if (!optionFile.good())
+            return false;
+        std::string chain = ChainNameFromCommandLine();
+        // Write a bitcoin.desktop file to the autostart directory:
+        optionFile << "[Desktop Entry]\n";
+        optionFile << "Type=Application\n";
+        if (chain == CBaseChainParams::MAIN)
+            optionFile << "Name=Bitcoin\n";
+        else
+            optionFile << strprintf("Name=Bitcoin (%s)\n", chain);
+        optionFile << "Exec=" << pszExePath << strprintf(" -min -testnet=%d -regtest=%d\n", GetBoolArg("-testnet", false), GetBoolArg("-regtest", false));
+        optionFile << "Terminal=false\n";
+        optionFile << "Hidden=false\n";
+        optionFile.close();
+    }
+    return true;
+}
+
+
+#elif defined(Q_OS_MAC)
+// based on: https://github.com/Mozketo/LaunchAtLoginController/blob/master/LaunchAtLoginController.m
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreServices/CoreServices.h>
+
+LSSharedFileListItemRef findStartupItemInList(LSSharedFileListRef list, CFURLRef findUrl);
+LSSharedFileListItemRef findStartupItemInList(LSSharedFileListRef list, CFURLRef findUrl)
+{
+    // loop through the list of startup items and try to find the bitcoin app
+    CFArrayRef listSnapshot = LSSharedFileListCopySnapshot(list, NULL);
+    for(int i = 0; i < CFArrayGetCount(listSnapshot); i++) {
+        LSSharedFileListItemRef item = (LSSharedFileListItemRef)CFArrayGetValueAtIndex(listSnapshot, i);
+        UInt32 resolutionFlags = kLSSharedFileListNoUserInteraction | kLSSharedFileListDoNotMountVolumes;
+        CFURLRef currentItemURL = NULL;
+
+#if defined(MAC_OS_X_VERSION_MAX_ALLOWED) && MAC_OS_X_VERSION_MAX_ALLOWED >= 10100
+    if(&LSSharedFileListItemCopyResolvedURL)
+        currentItemURL = LSSharedFileListItemCopyResolvedURL(item, resolutionFlags, NULL);
+#if defined(MAC_OS_X_VERSION_MIN_REQUIRED) && MAC_OS_X_VERSION_MIN_REQUIRED < 10100
+    else
+        LSSharedFileListItemResolve(item, resolutionFlags, &currentItemURL, NULL);
+#endif
+#else
+    LSSharedFileListItemResolve(item, resolutionFlags, &currentItemURL, NULL);
+#endif
+
+        if(currentItemURL && CFEqual(currentItemURL, findUrl)) {
+            // found
+            CFRelease(currentItemURL);
+            return item;
+        }
+        if(currentItemURL) {
+            CFRelease(currentItemURL);
+        }
+    }
+    return NULL;
+}
+
+bool GetStartOnSystemStartup()
+{
+    CFURLRef bitcoinAppUrl = CFBundleCopyBundleURL(CFBundleGetMainBundle());
+    LSSharedFileListRef loginItems = LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL);
+    LSSharedFileListItemRef foundItem = findStartupItemInList(loginItems, bitcoinAppUrl);
+    return !!foundItem; // return boolified object
+}
+
+bool SetStartOnSystemStartup(bool fAutoStart)
+{
+    CFURLRef bitcoinAppUrl = CFBundleCopyBundleURL(CFBundleGetMainBundle());
+    LSSharedFileListRef loginItems = LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL);
+    LSSharedFileListItemRef foundItem = findStartupItemInList(loginItems, bitcoinAppUrl);
+
+    if(fAutoStart && !foundItem) {
+        // add bitcoin app to startup item list
+        LSSharedFileListInsertItemURL(loginItems, kLSSharedFileListItemBeforeFirst, NULL, NULL, bitcoinAppUrl, NULL, NULL);
+    }
+    else if(!fAutoStart && foundItem) {
+        // remove item
+        LSSharedFileListItemRemove(loginItems, foundItem);
+    }
+    return true;
+}
+#else
+
+bool GetStartOnSystemStartup() { return false; }
+bool SetStartOnSystemStartup(bool fAutoStart) { return false; }
+
+#endif
+
+void saveWindowGeometry(const QString& strSetting, QWidget *parent)
+{
+    QSettings settings;
+    settings.setValue(strSetting + "Pos", parent->pos());
+    settings.setValue(strSetting + "Size", parent->size());
+}
+
+void restoreWindowGeometry(const QString& strSetting, const QSize& defaultSize, QWidget *parent)
+{
+    QSettings settings;
+    QPoint pos = settings.value(strSetting + "Pos").toPoint();
+    QSize size = settings.value(strSetting + "Size", defaultSize).toSize();
+
+    if (!pos.x() && !pos.y()) {
+        QRect screen = QApplication::desktop()->screenGeometry();
+        pos.setX((screen.width() - size.width()) / 2);
+        pos.setY((screen.height() - size.height()) / 2);
+    }
+
+    parent->resize(size);
+    parent->move(pos);
+}
+
+void setClipboard(const QString& str)
+{
+    QApplication::clipboard()->setText(str, QClipboard::Clipboard);
+    QApplication::clipboard()->setText(str, QClipboard::Selection);
+}
+
+#if BOOST_FILESYSTEM_VERSION >= 3
+boost::filesystem::path qstringToBoostPath(const QString &path)
+{
+    return boost::filesystem::path(path.toStdString(), utf8);
+}
+
+QString boostPathToQString(const boost::filesystem::path &path)
+{
+    return QString::fromStdString(path.string(utf8));
+}
+#else
+#warning Conversion between boost path and QString can use invalid character encoding with boost_filesystem v2 and older
+boost::filesystem::path qstringToBoostPath(const QString &path)
+{
+    return boost::filesystem::path(path.toStdString());
+}
+
+QString boostPathToQString(const boost::filesystem::path &path)
+{
+    return QString::fromStdString(path.string());
+}
+#endif
+
+QString formatDurationStr(int secs)
+{
+    QStringList strList;
+    int days = secs / 86400;
+    int hours = (secs % 86400) / 3600;
+    int mins = (secs % 3600) / 60;
+    int seconds = secs % 60;
+
+    if (days)
+        strList.append(QString(QObject::tr("%1 d")).arg(days));
+    if (hours)
+        strList.append(QString(QObject::tr("%1 h")).arg(hours));
+    if (mins)
+        strList.append(QString(QObject::tr("%1 m")).arg(mins));
+    if (seconds || (!days && !hours && !mins))
+        strList.append(QString(QObject::tr("%1 s")).arg(seconds));
+
+    return strList.join(" ");
+}
+
+QString formatServicesStr(quint64 mask)
+{
+    QStringList strList;
+
+    // Just scan the last 8 bits for now.
+    for (int i = 0; i < 8; i++) {
+        uint64_t check = 1 << i;
+        if (mask & check)
+        {
+            switch (check)
+            {
+            case NODE_NETWORK:
+                strList.append("NETWORK");
+                break;
+            case NODE_GETUTXO:
+                strList.append("GETUTXO");
+                break;
+            case NODE_BLOOM:
+                strList.append("BLOOM");
+                break;
+            case NODE_WITNESS:
+                strList.append("WITNESS");
+                break;
+            case NODE_XTHIN:
+                strList.append("XTHIN");
+                break;
+            default:
+                strList.append(QString("%1[%2]").arg("UNKNOWN").arg(check));
+            }
+        }
+    }
+
+    if (strList.size())
+        return strList.join(" & ");
+    else
+        return QObject::tr("None");
+}
+
+QString formatPingTime(double dPingTime)
+{
+    return dPingTime == 0 ? QObject::tr("N/A") : QString(QObject::tr("%1 ms")).arg(QString::number((int)(dPingTime * 1000), 10));
+}
+
+QString formatTimeOffset(int64_t nTimeOffset)
+{
+  return QString(QObject::tr("%1 s")).arg(QString::number((int)nTimeOffset, 10));
+}
+
+QString formateNiceTimeOffset(qint64 secs)
+{
+    // Represent time from last generated block in human readable text
+    QString timeBehindText;
+    const int HOUR_IN_SECONDS = 60*60;
+    const int DAY_IN_SECONDS = 24*60*60;
+    const int WEEK_IN_SECONDS = 7*24*60*60;
+    const int YEAR_IN_SECONDS = 31556952; // Average length of year in Gregorian calendar
+    if(secs < 60)
+    {
+        timeBehindText = QObject::tr("%n seconds(s)","",secs);
+    }
+    else if(secs < 2*HOUR_IN_SECONDS)
+    {
+        timeBehindText = QObject::tr("%n minutes(s)","",secs/60);
+    }
+    else if(secs < 2*DAY_IN_SECONDS)
+    {
+        timeBehindText = QObject::tr("%n hour(s)","",secs/HOUR_IN_SECONDS);
+    }
+    else if(secs < 2*WEEK_IN_SECONDS)
+    {
+        timeBehindText = QObject::tr("%n day(s)","",secs/DAY_IN_SECONDS);
+    }
+    else if(secs < YEAR_IN_SECONDS)
+    {
+        timeBehindText = QObject::tr("%n week(s)","",secs/WEEK_IN_SECONDS);
+    }
+    else
+    {
+        qint64 years = secs / YEAR_IN_SECONDS;
+        qint64 remainder = secs % YEAR_IN_SECONDS;
+        timeBehindText = QObject::tr("%1 and %2").arg(QObject::tr("%n year(s)", "", years)).arg(QObject::tr("%n week(s)","", remainder/WEEK_IN_SECONDS));
+    }
+    return timeBehindText;
+}
+} // namespace GUIUtil