1 files changed, 202 insertions, 0 deletions
diff --git a/src/qt/splashscreen.cpp b/src/qt/splashscreen.cpp
new file mode 100644
index 000000000..c15b64c32
--- /dev/null
+++ b/src/qt/splashscreen.cpp
@@ -0,0 +1,202 @@
+// Copyright (c) 2011-2014 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 "splashscreen.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>
+#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("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            = 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 > 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()/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));
+    pixPaint.drawText(pixmap.width()/devicePixelRatio-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()/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();
+}
+
+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();
+}