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// Copyright (c) 2011-2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <qt/splashscreen.h>
#include <qt/networkstyle.h>
#include <clientversion.h>
#include <init.h>
#include <util.h>
#include <ui_interface.h>
#include <version.h>
#ifdef ENABLE_WALLET
#include <wallet/wallet.h>
#endif
#include <QApplication>
#include <QCloseEvent>
#include <QDesktopWidget>
#include <QPainter>
#include <QRadialGradient>
SplashScreen::SplashScreen(Qt::WindowFlags f, const NetworkStyle *networkStyle) :
QWidget(0, f), curAlignment(0)
{
// set reference point, paddings
int paddingRight = 50;
int paddingTop = 50;
int titleVersionVSpace = 17;
int titleCopyrightVSpace = 40;
float fontFactor = 1.0;
float devicePixelRatio = 1.0;
#if QT_VERSION > 0x050100
devicePixelRatio = ((QGuiApplication*)QCoreApplication::instance())->devicePixelRatio();
#endif
// define text to place
QString titleText = tr(PACKAGE_NAME);
QString versionText = QString("Version %1").arg(QString::fromStdString(FormatFullVersion()));
QString copyrightText = QString::fromUtf8(CopyrightHolders(strprintf("\xc2\xA9 %u-%u ", 2009, COPYRIGHT_YEAR)).c_str());
QString titleAddText = networkStyle->getTitleAddText();
QString font = QApplication::font().toString();
// create a bitmap according to device pixelratio
QSize splashSize(480*devicePixelRatio,320*devicePixelRatio);
pixmap = QPixmap(splashSize);
#if QT_VERSION > 0x050100
// change to HiDPI if it makes sense
pixmap.setDevicePixelRatio(devicePixelRatio);
#endif
QPainter pixPaint(&pixmap);
pixPaint.setPen(QColor(100,100,100));
// draw a slightly radial gradient
QRadialGradient gradient(QPoint(0,0), splashSize.width()/devicePixelRatio);
gradient.setColorAt(0, Qt::white);
gradient.setColorAt(1, QColor(247,247,247));
QRect rGradient(QPoint(0,0), splashSize);
pixPaint.fillRect(rGradient, gradient);
// draw the bitcoin icon, expected size of PNG: 1024x1024
QRect rectIcon(QPoint(-150,-122), QSize(430,430));
const QSize requiredSize(1024,1024);
QPixmap icon(networkStyle->getAppIcon().pixmap(requiredSize));
pixPaint.drawPixmap(rectIcon, icon);
// check font size and drawing with
pixPaint.setFont(QFont(font, 33*fontFactor));
QFontMetrics fm = pixPaint.fontMetrics();
int titleTextWidth = fm.width(titleText);
if (titleTextWidth > 176) {
fontFactor = fontFactor * 176 / titleTextWidth;
}
pixPaint.setFont(QFont(font, 33*fontFactor));
fm = pixPaint.fontMetrics();
titleTextWidth = fm.width(titleText);
pixPaint.drawText(pixmap.width()/devicePixelRatio-titleTextWidth-paddingRight,paddingTop,titleText);
pixPaint.setFont(QFont(font, 15*fontFactor));
// if the version string is to long, reduce size
fm = pixPaint.fontMetrics();
int versionTextWidth = fm.width(versionText);
if(versionTextWidth > titleTextWidth+paddingRight-10) {
pixPaint.setFont(QFont(font, 10*fontFactor));
titleVersionVSpace -= 5;
}
pixPaint.drawText(pixmap.width()/devicePixelRatio-titleTextWidth-paddingRight+2,paddingTop+titleVersionVSpace,versionText);
// draw copyright stuff
{
pixPaint.setFont(QFont(font, 10*fontFactor));
const int x = pixmap.width()/devicePixelRatio-titleTextWidth-paddingRight;
const int y = paddingTop+titleCopyrightVSpace;
QRect copyrightRect(x, y, pixmap.width() - x - paddingRight, pixmap.height() - y);
pixPaint.drawText(copyrightRect, Qt::AlignLeft | Qt::AlignTop | Qt::TextWordWrap, copyrightText);
}
// draw additional text if special network
if(!titleAddText.isEmpty()) {
QFont boldFont = QFont(font, 10*fontFactor);
boldFont.setWeight(QFont::Bold);
pixPaint.setFont(boldFont);
fm = pixPaint.fontMetrics();
int titleAddTextWidth = fm.width(titleAddText);
pixPaint.drawText(pixmap.width()/devicePixelRatio-titleAddTextWidth-10,15,titleAddText);
}
pixPaint.end();
// Set window title
setWindowTitle(titleText + " " + titleAddText);
// Resize window and move to center of desktop, disallow resizing
QRect r(QPoint(), QSize(pixmap.size().width()/devicePixelRatio,pixmap.size().height()/devicePixelRatio));
resize(r.size());
setFixedSize(r.size());
move(QApplication::desktop()->screenGeometry().center() - r.center());
subscribeToCoreSignals();
installEventFilter(this);
}
SplashScreen::~SplashScreen()
{
unsubscribeFromCoreSignals();
}
bool SplashScreen::eventFilter(QObject * obj, QEvent * ev) {
if (ev->type() == QEvent::KeyPress) {
QKeyEvent *keyEvent = static_cast<QKeyEvent *>(ev);
if(keyEvent->text()[0] == 'q') {
StartShutdown();
}
}
return QObject::eventFilter(obj, ev);
}
void SplashScreen::slotFinish(QWidget *mainWin)
{
Q_UNUSED(mainWin);
/* If the window is minimized, hide() will be ignored. */
/* Make sure we de-minimize the splashscreen window before hiding */
if (isMinimized())
showNormal();
hide();
deleteLater(); // No more need for this
}
static void InitMessage(SplashScreen *splash, const std::string &message)
{
QMetaObject::invokeMethod(splash, "showMessage",
Qt::QueuedConnection,
Q_ARG(QString, QString::fromStdString(message)),
Q_ARG(int, Qt::AlignBottom|Qt::AlignHCenter),
Q_ARG(QColor, QColor(55,55,55)));
}
static void ShowProgress(SplashScreen *splash, const std::string &title, int nProgress, bool resume_possible)
{
InitMessage(splash, title + std::string("\n") +
(resume_possible ? _("(press q to shutdown and continue later)")
: _("press q to shutdown")) +
strprintf("\n%d", nProgress) + "%");
}
#ifdef ENABLE_WALLET
void SplashScreen::ConnectWallet(CWallet* wallet)
{
wallet->ShowProgress.connect(boost::bind(ShowProgress, this, _1, _2, false));
connectedWallets.push_back(wallet);
}
#endif
void SplashScreen::subscribeToCoreSignals()
{
// Connect signals to client
uiInterface.InitMessage.connect(boost::bind(InitMessage, this, _1));
uiInterface.ShowProgress.connect(boost::bind(ShowProgress, this, _1, _2, _3));
#ifdef ENABLE_WALLET
uiInterface.LoadWallet.connect(boost::bind(&SplashScreen::ConnectWallet, this, _1));
#endif
}
void SplashScreen::unsubscribeFromCoreSignals()
{
// Disconnect signals from client
uiInterface.InitMessage.disconnect(boost::bind(InitMessage, this, _1));
uiInterface.ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2, _3));
#ifdef ENABLE_WALLET
for (CWallet* const & pwallet : connectedWallets) {
pwallet->ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2, false));
}
#endif
}
void SplashScreen::showMessage(const QString &message, int alignment, const QColor &color)
{
curMessage = message;
curAlignment = alignment;
curColor = color;
update();
}
void SplashScreen::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
painter.drawPixmap(0, 0, pixmap);
QRect r = rect().adjusted(5, 5, -5, -5);
painter.setPen(curColor);
painter.drawText(r, curAlignment, curMessage);
}
void SplashScreen::closeEvent(QCloseEvent *event)
{
StartShutdown(); // allows an "emergency" shutdown during startup
event->ignore();
}
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