use ppm instead of svg for generating qr pixbuf

uowuo · Jul 4, 2023 · cf02c13 · cf02c13
1 parent ab448a3
commit cf02c13
Showing 1 changed file with 12 additions and 15 deletions.
diff --git a/src/remoteauth/remoteauthdialog.cpp b/src/remoteauth/remoteauthdialog.cpp
@@ -65,29 +65,26 @@ void RemoteAuthDialog::OnFingerprint(const std::string &fingerprint) {
     int size = qr.getSize();
     const int border = 4;
 
+    const auto module_set = "0 0 0";
+    const auto module_clr = "255 255 255";
+
     std::ostringstream sb;
-    sb << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
-    sb << "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n";
-    sb << "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" viewBox=\"0 0 ";
-    sb << (size + border * 2) << " " << (size + border * 2) << "\" stroke=\"none\">\n";
-    sb << "\t<rect width=\"100%\" height=\"100%\" fill=\"#FFFFFF\"/>\n";
-    sb << "\t<path d=\"";
-    for (int y = 0; y < size; y++) {
-        for (int x = 0; x < size; x++) {
+    sb << "P3\n";
+    sb << size + border * 2 << " " << size + border * 2 << " 255\n";
+    for (int y = -border; y < size + border; y++) {
+        for (int x = -border; x < size + border; x++) {
             if (qr.getModule(x, y)) {
-                if (x != 0 || y != 0)
-                    sb << " ";
-                sb << "M" << (x + border) << "," << (y + border) << "h1v1h-1z";
+                sb << module_set << "\n";
+            } else {
+                sb << module_clr << "\n";
             }
         }
     }
-    sb << "\" fill=\"#000000\"/>\n";
-    sb << "</svg>\n";
 
-    const auto svg = sb.str();
+    const auto img = sb.str();
 
     auto loader = Gdk::PixbufLoader::create();
-    loader->write(reinterpret_cast<const guint8 *>(svg.data()), svg.size());
+    loader->write(reinterpret_cast<const guint8 *>(img.data()), img.size());
     loader->close();
     const auto pb = loader->get_pixbuf()->scale_simple(256, 256, Gdk::INTERP_NEAREST);