Inside Bitcoin

1// Copyright (c) 2014-present 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 <qt/networkstyle.h>
6
7#include <qt/guiconstants.h>
8
9#include <tinyformat.h>
10#include <util/chaintype.h>
11
12#include <QApplication>
13
14static const struct {
15    const ChainType networkId;
16    const char *appName;
17    const int iconColorHueShift;
18    const int iconColorSaturationReduction;
19} network_styles[] = {
20    {ChainType::MAIN, QAPP_APP_NAME_DEFAULT, 0, 0},
21    {ChainType::TESTNET, QAPP_APP_NAME_TESTNET, 70, 30},
22    {ChainType::TESTNET4, QAPP_APP_NAME_TESTNET4, 70, 30},
23    {ChainType::SIGNET, QAPP_APP_NAME_SIGNET, 35, 15},
24    {ChainType::REGTEST, QAPP_APP_NAME_REGTEST, 160, 30},
25};
26
27// titleAddText needs to be const char* for tr()
28NetworkStyle::NetworkStyle(const QString &_appName, const int iconColorHueShift, const int iconColorSaturationReduction, const char *_titleAddText):
29    appName(_appName),
30    titleAddText(qApp->translate("SplashScreen", _titleAddText))
31{
32    // load pixmap
33    QPixmap pixmap(":/icons/bitcoin");
34
35    if(iconColorHueShift != 0 && iconColorSaturationReduction != 0)
36    {
37        // generate QImage from QPixmap
38        QImage img = pixmap.toImage();
39
40        int h,s,l,a;
41
42        // traverse though lines
43        for(int y=0;y<img.height();y++)
44        {
45            QRgb *scL = reinterpret_cast< QRgb *>( img.scanLine( y ) );
46
47            // loop through pixels
48            for(int x=0;x<img.width();x++)
49            {
50                // preserve alpha because QColor::getHsl doesn't return the alpha value
51                a = qAlpha(scL[x]);
52                QColor col(scL[x]);
53
54                // get hue value
55                col.getHsl(&h,&s,&l);
56
57                // rotate color on RGB color circle
58                // 70° should end up with the typical "testnet" green
59                h+=iconColorHueShift;
60
61                // change saturation value
62                if(s>iconColorSaturationReduction)
63                {
64                    s -= iconColorSaturationReduction;
65                }
66                col.setHsl(h,s,l,a);
67
68                // set the pixel
69                scL[x] = col.rgba();
70            }
71        }
72
73        //convert back to QPixmap
74        pixmap.convertFromImage(img);
75    }
76
77    appIcon             = QIcon(pixmap);
78    trayAndWindowIcon   = QIcon(pixmap.scaled(QSize(256,256)));
79}
80
81const NetworkStyle* NetworkStyle::instantiate(const ChainType networkId)
82{
83    std::string titleAddText = networkId == ChainType::MAIN ? "" : strprintf("[%s]", ChainTypeToString(networkId));
84    for (const auto& network_style : network_styles) {
85        if (networkId == network_style.networkId) {
86            return new NetworkStyle(
87                    network_style.appName,
88                    network_style.iconColorHueShift,
89                    network_style.iconColorSaturationReduction,
90                    titleAddText.c_str());
91        }
92    }
93    return nullptr;
94}
95