1  // Copyright (c) 2014-2021 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  
14  static 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::SIGNET, QAPP_APP_NAME_SIGNET, 35, 15},
23      {ChainType::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 ChainType networkId)
81  {
82      std::string titleAddText = networkId == ChainType::MAIN ? "" : strprintf("[%s]", ChainTypeToString(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  }