1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
// Copyright (c) 2011-2014 The Bitcoin developers
// Distributed under the MIT/X11 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>
#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 = "Arial";
// 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 slighly 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);
QIcon appIcon = networkStyle->getAppIcon(requiredSize);
QPixmap icon(appIcon.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();
}
|
