remote auth impl. up to QR code display

1 files changed, 79 insertions, 0 deletions

diff --git a/src/remoteauth/remoteauthdialog.cpp b/src/remoteauth/remoteauthdialog.cpp
new file mode 100644
index 0000000..db154c4
--- /dev/null
+++ b/src/remoteauth/remoteauthdialog.cpp
@@ -0,0 +1,79 @@
+#include "remoteauthdialog.hpp"
+#include <qrcodegen.hpp>
+
+RemoteAuthDialog::RemoteAuthDialog(Gtk::Window &parent)
+    : Gtk::Dialog("Login with QR Code", parent, true)
+    , m_layout(Gtk::ORIENTATION_VERTICAL)
+    , m_ok("OK")
+    , m_cancel("Cancel")
+    , m_bbox(Gtk::ORIENTATION_HORIZONTAL) {
+    set_default_size(300, 50);
+    get_style_context()->add_class("app-window");
+    get_style_context()->add_class("app-popup");
+
+    m_ok.signal_clicked().connect([&]() {
+        response(Gtk::RESPONSE_OK);
+    });
+
+    m_cancel.signal_clicked().connect([&]() {
+        response(Gtk::RESPONSE_CANCEL);
+    });
+
+    m_bbox.pack_start(m_ok, Gtk::PACK_SHRINK);
+    m_bbox.pack_start(m_cancel, Gtk::PACK_SHRINK);
+    m_bbox.set_layout(Gtk::BUTTONBOX_END);
+
+    m_ra.signal_fingerprint().connect(sigc::mem_fun(*this, &RemoteAuthDialog::OnFingerprint));
+
+    m_ra.Start();
+
+    m_image.set_size_request(256, 256);
+
+    m_layout.add(m_image);
+    m_layout.add(m_bbox);
+    get_content_area()->add(m_layout);
+
+    show_all_children();
+}
+
+void RemoteAuthDialog::OnFingerprint(const std::string &fingerprint) {
+    const auto url = "https://discord.com/ra/" + fingerprint;
+
+    const auto level = qrcodegen::QrCode::Ecc::QUARTILE;
+    const auto qr = qrcodegen::QrCode::encodeText(url.c_str(), level);
+
+    int size = qr.getSize();
+    const int border = 4;
+
+    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++) {
+            if (qr.getModule(x, y)) {
+                if (x != 0 || y != 0)
+                    sb << " ";
+                sb << "M" << (x + border) << "," << (y + border) << "h1v1h-1z";
+            }
+        }
+    }
+    sb << "\" fill=\"#000000\"/>\n";
+    sb << "</svg>\n";
+
+    const auto svg = sb.str();
+
+    auto loader = Gdk::PixbufLoader::create();
+    loader->write(reinterpret_cast<const guint8 *>(svg.data()), svg.size());
+    loader->close();
+    const auto pb = loader->get_pixbuf()->scale_simple(256, 256, Gdk::INTERP_NEAREST);
+
+    m_image.property_pixbuf() = pb;
+}
+
+std::string RemoteAuthDialog::GetToken() {
+    return m_token;
+}