1 // Copyright (c) 2014-2019 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 <chainparamsbase.h>
10 #include <tinyformat.h>
11 
12 #include <QApplication>
13 
14 static const struct {
15     const char *networkId;
16     const char *appName;
17     const int iconColorHueShift;
18     const int iconColorSaturationReduction;
19 } network_styles[] = {
20     {"main", QAPP_APP_NAME_DEFAULT, 0, 0},
21     {"test", QAPP_APP_NAME_TESTNET, 70, 30},
22     {"signet", QAPP_APP_NAME_SIGNET, 35, 15},
23     {"regtest", QAPP_APP_NAME_REGTEST, 160, 30},
24 };
25 
26 // titleAddText needs to be const char* for tr()
27 NetworkStyle::NetworkStyle(const QString &_appName, const int iconColorHueShift, const int iconColorSaturationReduction, const char *_titleAddText):
28     appName(_appName),
29     titleAddText(qApp->translate("SplashScreen", _titleAddText))
30 {
31     // load pixmap
32     QPixmap pixmap(":/icons/bitcoin");
33 
34     if(iconColorHueShift != 0 && iconColorSaturationReduction != 0)
35     {
36         // generate QImage from QPixmap
37         QImage img = pixmap.toImage();
38 
39         int h,s,l,a;
40 
41         // traverse though lines
42         for(int y=0;y<img.height();y++)
43         {
44             QRgb *scL = reinterpret_cast< QRgb *>( img.scanLine( y ) );
45 
46             // loop through pixels
47             for(int x=0;x<img.width();x++)
48             {
49                 // preserve alpha because QColor::getHsl doesn't return the alpha value
50                 a = qAlpha(scL[x]);
51                 QColor col(scL[x]);
52 
53                 // get hue value
54                 col.getHsl(&h,&s,&l);
55 
56                 // rotate color on RGB color circle
57                 // 70° should end up with the typical "testnet" green
58                 h+=iconColorHueShift;
59 
60                 // change saturation value
61                 if(s>iconColorSaturationReduction)
62                 {
63                     s -= iconColorSaturationReduction;
64                 }
65                 col.setHsl(h,s,l,a);
66 
67                 // set the pixel
68                 scL[x] = col.rgba();
69             }
70         }
71 
72         //convert back to QPixmap
73         pixmap.convertFromImage(img);
74     }
75 
76     appIcon             = QIcon(pixmap);
77     trayAndWindowIcon   = QIcon(pixmap.scaled(QSize(256,256)));
78 }
79 
80 const NetworkStyle* NetworkStyle::instantiate(const std::string& networkId)
81 {
82     std::string titleAddText = networkId == CBaseChainParams::MAIN ? "" : strprintf("[%s]", networkId);
83     for (const auto& network_style : network_styles) {
84         if (networkId == network_style.networkId) {
85             return new NetworkStyle(
86                     network_style.appName,
87                     network_style.iconColorHueShift,
88                     network_style.iconColorSaturationReduction,
89                     titleAddText.c_str());
90         }
91     }
92     return nullptr;
93 }
94