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kevacoin/src/qt/guiutil.cpp

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// Copyright (c) 2011-2013 The Bitcoin developers
// Distributed under the MIT/X11 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 "walletmodel.h"
#include "core.h"
#include "init.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>
#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
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 bitcoinAddressFont()
{
QFont font("Monospace");
font.setStyleHint(QFont::TypeWriter);
return font;
}
void setupAddressWidget(QLineEdit *widget, QWidget *parent)
{
widget->setMaxLength(BitcoinAddressValidator::MaxAddressLength);
widget->setValidator(new BitcoinAddressValidator(parent));
widget->setFont(bitcoinAddressFont());
}
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();
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));
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, qint64 amount)
{
CTxDestination dest = CBitcoinAddress(address.toStdString()).Get();
CScript script; script.SetDestination(dest);
CTxOut txOut(amount, script);
return txOut.IsDust(CTransaction::nMinRelayTxFee);
}
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());
}
}
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(QString::fromStdString(pathDebug.string())));
}
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))
{
// Prefix <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);
widget->setToolTip(tooltip);
return true;
}
}
return QObject::eventFilter(obj, evt);
}
#ifdef WIN32
boost::filesystem::path static StartupShortcutPath()
{
return GetSpecialFolderPath(CSIDL_STARTUP) / "Bitcoin.lnk";
}
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));
TCHAR pszArgs[5] = TEXT("-min");
// Set the path to the shortcut target
psl->SetPath(pszExePath);
PathRemoveFileSpec(pszExePath);
psl->SetWorkingDirectory(pszExePath);
psl->SetShowCmd(SW_SHOWMINNOACTIVE);
psl->SetArguments(pszArgs);
// 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(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()
{
return GetAutostartDir() / "bitcoin.desktop";
}
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;
// Write a bitcoin.desktop file to the autostart directory:
optionFile << "[Desktop Entry]\n";
optionFile << "Type=Application\n";
optionFile << "Name=Bitcoin\n";
optionFile << "Exec=" << pszExePath << " -min\n";
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;
LSSharedFileListItemResolve(item, resolutionFlags, &currentItemURL, NULL);
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);
}
HelpMessageBox::HelpMessageBox(QWidget *parent) :
QMessageBox(parent)
{
header = tr("Bitcoin Core") + " " + tr("version") + " " +
QString::fromStdString(FormatFullVersion()) + "\n\n" +
tr("Usage:") + "\n" +
" bitcoin-qt [" + tr("command-line options") + "] " + "\n";
coreOptions = QString::fromStdString(HelpMessage(HMM_BITCOIN_QT));
uiOptions = tr("UI options") + ":\n" +
" -lang=<lang> " + tr("Set language, for example \"de_DE\" (default: system locale)") + "\n" +
" -min " + tr("Start minimized") + "\n" +
" -splash " + tr("Show splash screen on startup (default: 1)") + "\n" +
" -choosedatadir " + tr("Choose data directory on startup (default: 0)") + "\n";
setWindowTitle(tr("Bitcoin Core"));
setTextFormat(Qt::PlainText);
// setMinimumWidth is ignored for QMessageBox so put in non-breaking spaces to make it wider.
setText(header + QString(QChar(0x2003)).repeated(50));
setDetailedText(coreOptions + "\n" + uiOptions);
}
void HelpMessageBox::printToConsole()
{
// On other operating systems, the expected action is to print the message to the console.
QString strUsage = header + "\n" + coreOptions + "\n" + uiOptions;
fprintf(stdout, "%s", strUsage.toStdString().c_str());
}
void HelpMessageBox::showOrPrint()
{
#if defined(WIN32)
// On Windows, show a message box, as there is no stderr/stdout in windowed applications
exec();
#else
// On other operating systems, print help text to console
printToConsole();
#endif
}
void setClipboard(const QString& str)
{
QApplication::clipboard()->setText(str, QClipboard::Clipboard);
QApplication::clipboard()->setText(str, QClipboard::Selection);
}
} // namespace GUIUtil