Line data Source code
1 : // Copyright (c) 2011-2014 The Bitcoin Core developers
2 : // Distributed under the MIT software license, see the accompanying
3 : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 :
5 : #include "splashscreen.h"
6 :
7 : #include "networkstyle.h"
8 :
9 : #include "clientversion.h"
10 : #include "init.h"
11 : #include "util.h"
12 : #include "ui_interface.h"
13 : #include "version.h"
14 :
15 : #ifdef ENABLE_WALLET
16 : #include "wallet/wallet.h"
17 : #endif
18 :
19 : #include <QApplication>
20 : #include <QCloseEvent>
21 : #include <QDesktopWidget>
22 : #include <QPainter>
23 : #include <QRadialGradient>
24 :
25 0 : SplashScreen::SplashScreen(Qt::WindowFlags f, const NetworkStyle *networkStyle) :
26 0 : QWidget(0, f), curAlignment(0)
27 : {
28 : // set reference point, paddings
29 0 : int paddingRight = 50;
30 0 : int paddingTop = 50;
31 0 : int titleVersionVSpace = 17;
32 0 : int titleCopyrightVSpace = 40;
33 :
34 0 : float fontFactor = 1.0;
35 0 : float devicePixelRatio = 1.0;
36 : #if QT_VERSION > 0x050100
37 : devicePixelRatio = ((QGuiApplication*)QCoreApplication::instance())->devicePixelRatio();
38 : #endif
39 :
40 : // define text to place
41 : QString titleText = tr("Bitcoin Core");
42 0 : QString versionText = QString("Version %1").arg(QString::fromStdString(FormatFullVersion()));
43 0 : QString copyrightText = QChar(0xA9)+QString(" 2009-%1 ").arg(COPYRIGHT_YEAR) + QString(tr("The Bitcoin Core developers"));
44 0 : QString titleAddText = networkStyle->getTitleAddText();
45 :
46 0 : QString font = QApplication::font().toString();
47 :
48 : // create a bitmap according to device pixelratio
49 0 : QSize splashSize(480*devicePixelRatio,320*devicePixelRatio);
50 0 : pixmap = QPixmap(splashSize);
51 :
52 : #if QT_VERSION > 0x050100
53 : // change to HiDPI if it makes sense
54 : pixmap.setDevicePixelRatio(devicePixelRatio);
55 : #endif
56 :
57 0 : QPainter pixPaint(&pixmap);
58 0 : pixPaint.setPen(QColor(100,100,100));
59 :
60 : // draw a slightly radial gradient
61 0 : QRadialGradient gradient(QPoint(0,0), splashSize.width()/devicePixelRatio);
62 0 : gradient.setColorAt(0, Qt::white);
63 0 : gradient.setColorAt(1, QColor(247,247,247));
64 : QRect rGradient(QPoint(0,0), splashSize);
65 0 : pixPaint.fillRect(rGradient, gradient);
66 :
67 : // draw the bitcoin icon, expected size of PNG: 1024x1024
68 0 : QRect rectIcon(QPoint(-150,-122), QSize(430,430));
69 :
70 : const QSize requiredSize(1024,1024);
71 0 : QPixmap icon(networkStyle->getAppIcon().pixmap(requiredSize));
72 :
73 0 : pixPaint.drawPixmap(rectIcon, icon);
74 :
75 : // check font size and drawing with
76 0 : pixPaint.setFont(QFont(font, 33*fontFactor));
77 0 : QFontMetrics fm = pixPaint.fontMetrics();
78 0 : int titleTextWidth = fm.width(titleText);
79 0 : if(titleTextWidth > 160) {
80 : // strange font rendering, Arial probably not found
81 0 : fontFactor = 0.75;
82 : }
83 :
84 0 : pixPaint.setFont(QFont(font, 33*fontFactor));
85 0 : fm = pixPaint.fontMetrics();
86 0 : titleTextWidth = fm.width(titleText);
87 0 : pixPaint.drawText(pixmap.width()/devicePixelRatio-titleTextWidth-paddingRight,paddingTop,titleText);
88 :
89 0 : pixPaint.setFont(QFont(font, 15*fontFactor));
90 :
91 : // if the version string is to long, reduce size
92 0 : fm = pixPaint.fontMetrics();
93 0 : int versionTextWidth = fm.width(versionText);
94 0 : if(versionTextWidth > titleTextWidth+paddingRight-10) {
95 0 : pixPaint.setFont(QFont(font, 10*fontFactor));
96 0 : titleVersionVSpace -= 5;
97 : }
98 0 : pixPaint.drawText(pixmap.width()/devicePixelRatio-titleTextWidth-paddingRight+2,paddingTop+titleVersionVSpace,versionText);
99 :
100 : // draw copyright stuff
101 0 : pixPaint.setFont(QFont(font, 10*fontFactor));
102 0 : pixPaint.drawText(pixmap.width()/devicePixelRatio-titleTextWidth-paddingRight,paddingTop+titleCopyrightVSpace,copyrightText);
103 :
104 : // draw additional text if special network
105 0 : if(!titleAddText.isEmpty()) {
106 0 : QFont boldFont = QFont(font, 10*fontFactor);
107 0 : boldFont.setWeight(QFont::Bold);
108 0 : pixPaint.setFont(boldFont);
109 0 : fm = pixPaint.fontMetrics();
110 0 : int titleAddTextWidth = fm.width(titleAddText);
111 0 : pixPaint.drawText(pixmap.width()/devicePixelRatio-titleAddTextWidth-10,15,titleAddText);
112 : }
113 :
114 0 : pixPaint.end();
115 :
116 : // Set window title
117 0 : setWindowTitle(titleText + " " + titleAddText);
118 :
119 : // Resize window and move to center of desktop, disallow resizing
120 0 : QRect r(QPoint(), QSize(pixmap.size().width()/devicePixelRatio,pixmap.size().height()/devicePixelRatio));
121 0 : resize(r.size());
122 0 : setFixedSize(r.size());
123 0 : move(QApplication::desktop()->screenGeometry().center() - r.center());
124 :
125 0 : subscribeToCoreSignals();
126 0 : }
127 :
128 0 : SplashScreen::~SplashScreen()
129 : {
130 0 : unsubscribeFromCoreSignals();
131 0 : }
132 :
133 0 : void SplashScreen::slotFinish(QWidget *mainWin)
134 : {
135 : Q_UNUSED(mainWin);
136 0 : hide();
137 0 : }
138 :
139 0 : static void InitMessage(SplashScreen *splash, const std::string &message)
140 : {
141 : QMetaObject::invokeMethod(splash, "showMessage",
142 : Qt::QueuedConnection,
143 : Q_ARG(QString, QString::fromStdString(message)),
144 : Q_ARG(int, Qt::AlignBottom|Qt::AlignHCenter),
145 0 : Q_ARG(QColor, QColor(55,55,55)));
146 0 : }
147 :
148 0 : static void ShowProgress(SplashScreen *splash, const std::string &title, int nProgress)
149 : {
150 0 : InitMessage(splash, title + strprintf("%d", nProgress) + "%");
151 0 : }
152 :
153 : #ifdef ENABLE_WALLET
154 0 : static void ConnectWallet(SplashScreen *splash, CWallet* wallet)
155 : {
156 0 : wallet->ShowProgress.connect(boost::bind(ShowProgress, splash, _1, _2));
157 0 : }
158 : #endif
159 :
160 0 : void SplashScreen::subscribeToCoreSignals()
161 : {
162 : // Connect signals to client
163 0 : uiInterface.InitMessage.connect(boost::bind(InitMessage, this, _1));
164 0 : uiInterface.ShowProgress.connect(boost::bind(ShowProgress, this, _1, _2));
165 : #ifdef ENABLE_WALLET
166 0 : uiInterface.LoadWallet.connect(boost::bind(ConnectWallet, this, _1));
167 : #endif
168 0 : }
169 :
170 0 : void SplashScreen::unsubscribeFromCoreSignals()
171 : {
172 : // Disconnect signals from client
173 0 : uiInterface.InitMessage.disconnect(boost::bind(InitMessage, this, _1));
174 0 : uiInterface.ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2));
175 : #ifdef ENABLE_WALLET
176 0 : if(pwalletMain)
177 0 : pwalletMain->ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2));
178 : #endif
179 0 : }
180 :
181 0 : void SplashScreen::showMessage(const QString &message, int alignment, const QColor &color)
182 : {
183 0 : curMessage = message;
184 0 : curAlignment = alignment;
185 0 : curColor = color;
186 0 : update();
187 0 : }
188 :
189 0 : void SplashScreen::paintEvent(QPaintEvent *event)
190 : {
191 0 : QPainter painter(this);
192 0 : painter.drawPixmap(0, 0, pixmap);
193 0 : QRect r = rect().adjusted(5, 5, -5, -5);
194 0 : painter.setPen(curColor);
195 0 : painter.drawText(r, curAlignment, curMessage);
196 0 : }
197 :
198 0 : void SplashScreen::closeEvent(QCloseEvent *event)
199 : {
200 0 : StartShutdown(); // allows an "emergency" shutdown during startup
201 0 : event->ignore();
202 0 : }
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