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// Copyright (c) 2011-2014 The Bitcoin developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "splashscreen.h"
#include "clientversion.h"
#include "init.h"
#include "networkstyle.h"
#include "ui_interface.h"
#include "util.h"
#include "version.h"
#ifdef ENABLE_WALLET
#include "wallet.h"
#endif
#include <QApplication>
#include <QCloseEvent>
#include <QDesktopWidget>
#include <QPainter>
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;
// define text to place
QString titleText = tr("Bitcoin Core");
QString versionText = QString("Version %1").arg(QString::fromStdString(FormatFullVersion()));
QString copyrightText = QChar(0xA9)+QString(" 2009-%1 ").arg(COPYRIGHT_YEAR) + QString(tr("The Bitcoin Core developers"));
QString titleAddText = networkStyle->getTitleAddText();
QString font = "Arial";
// load the bitmap for writing some text over it
pixmap = networkStyle->getSplashImage();
QPainter pixPaint(&pixmap);
pixPaint.setPen(QColor(100,100,100));
// check font size and drawing with
pixPaint.setFont(QFont(font, 33*fontFactor));
QFontMetrics fm = pixPaint.fontMetrics();
int titleTextWidth = fm.width(titleText);
if(titleTextWidth > 160) {
// strange font rendering, Arial probably not found
fontFactor = 0.75;
}
pixPaint.setFont(QFont(font, 33*fontFactor));
fm = pixPaint.fontMetrics();
titleTextWidth = fm.width(titleText);
pixPaint.drawText(pixmap.width()-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()-titleTextWidth-paddingRight+2,paddingTop+titleVersionVSpace,versionText);
// draw copyright stuff
pixPaint.setFont(QFont(font, 10*fontFactor));
pixPaint.drawText(pixmap.width()-titleTextWidth-paddingRight,paddingTop+titleCopyrightVSpace,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()-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(), pixmap.size());
resize(r.size());
setFixedSize(r.size());
move(QApplication::desktop()->screenGeometry().center() - r.center());
subscribeToCoreSignals();
}
SplashScreen::~SplashScreen()
{
unsubscribeFromCoreSignals();
}
void SplashScreen::slotFinish(QWidget *mainWin)
{
Q_UNUSED(mainWin);
hide();
}
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)
{
InitMessage(splash, title + strprintf("%d", nProgress) + "%");
}
#ifdef ENABLE_WALLET
static void ConnectWallet(SplashScreen *splash, CWallet* wallet)
{
wallet->ShowProgress.connect(boost::bind(ShowProgress, splash, _1, _2));
}
#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));
#ifdef ENABLE_WALLET
uiInterface.LoadWallet.connect(boost::bind(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));
#ifdef ENABLE_WALLET
if(pwalletMain)
pwalletMain->ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2));
#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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