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splashscreen.cpp
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splashscreen.cpp
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// Copyright (c) 2011-2015 The Bitcoin Core developers
// Copyright (c) 2014-2017 The Axe Core 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 "guiutil.h"
#include "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>
SplashScreen::SplashScreen(Qt::WindowFlags f, const NetworkStyle *networkStyle) :
QWidget(0, f), curAlignment(0)
{
// transparent background
setAttribute(Qt::WA_TranslucentBackground);
setStyleSheet("background:transparent;");
// no window decorations
setWindowFlags(Qt::FramelessWindowHint);
// set reference point, paddings
int paddingLeft = 14;
int paddingTop = 470;
int titleVersionVSpace = 17;
int titleCopyrightVSpace = 32;
float fontFactor = 1.0;
// define text to place
QString titleText = tr("Axe Core");
QString versionText = QString(tr("Version %1")).arg(QString::fromStdString(FormatFullVersion()));
QString copyrightTextBtc = QChar(0xA9)+QString(" 2009-%1 ").arg(COPYRIGHT_YEAR) + QString(tr("The Bitcoin Core developers"));
QString copyrightTextAxe = QChar(0xA9)+QString(" 2017-%1 ").arg(COPYRIGHT_YEAR) + QString(tr("The Axe Core developers"));
QString titleAddText = networkStyle->getTitleAddText();
// networkstyle.cpp can't (yet) read themes, so we do it here to get the correct Splash-screen
QString splashScreenPath = ":/images/" + GUIUtil::getThemeName() + "/splash";
if(GetBoolArg("-regtest", false))
splashScreenPath = ":/images/" + GUIUtil::getThemeName() + "/splash_testnet";
if(GetBoolArg("-testnet", false))
splashScreenPath = ":/images/" + GUIUtil::getThemeName() + "/splash_testnet";
QString font = QApplication::font().toString();
// load the bitmap for writing some text over it
pixmap = QPixmap(splashScreenPath);
QPainter pixPaint(&pixmap);
pixPaint.setPen(QColor(100,100,100));
// check font size and drawing with
pixPaint.setFont(QFont(font, 28*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, 28*fontFactor));
fm = pixPaint.fontMetrics();
titleTextWidth = fm.width(titleText);
pixPaint.drawText(paddingLeft,paddingTop,titleText);
pixPaint.setFont(QFont(font, 15*fontFactor));
pixPaint.drawText(paddingLeft,paddingTop+titleVersionVSpace,versionText);
// draw copyright stuff
pixPaint.setFont(QFont(font, 10*fontFactor));
pixPaint.drawText(paddingLeft,paddingTop+titleCopyrightVSpace,copyrightTextBtc);
pixPaint.drawText(paddingLeft,paddingTop+titleCopyrightVSpace+12,copyrightTextAxe);
// 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,pixmap.height()-25,titleAddText);
}
pixPaint.end();
// 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();
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' && breakAction != nullptr) {
breakAction();
}
}
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(255,26,26)));
}
static void ShowProgress(SplashScreen *splash, const std::string &title, int nProgress)
{
InitMessage(splash, title + strprintf("%d", nProgress) + "%");
}
void SplashScreen::setBreakAction(const std::function<void(void)> &action)
{
breakAction = action;
}
static void SetProgressBreakAction(SplashScreen *splash, const std::function<void(void)> &action)
{
QMetaObject::invokeMethod(splash, "setBreakAction",
Qt::QueuedConnection,
Q_ARG(std::function<void(void)>, action));
}
#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));
uiInterface.SetProgressBreakAction.connect(boost::bind(SetProgressBreakAction, this, _1));
#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();
}