Added dummy filler to PeerQrBox when result link is empty.

Telegram/SourceFiles/ui/boxes/peer_qr_box.cpp

@@ -261,7 +261,7 @@ not_null<Ui::RpWidget*> PrepareQrWidget(
 		state->backgroundColors = backgroundColors;
 		state->text = username.toUpper();
 		state->textWidth = state->font->width(state->text);
-		{
+		if (!link.isEmpty()) {
 			const auto remainder = qrMaxSize % st::introQrPixel;
 			const auto downTo = remainder
 				? qrMaxSize - remainder
@@ -274,6 +274,13 @@ not_null<Ui::RpWidget*> PrepareQrWidget(
 					Size(qrMaxSize * style::DevicePixelRatio()),
 					Qt::IgnoreAspectRatio,
 					Qt::SmoothTransformation);
+		} else {
+			auto image = QImage(
+				Size(qrMaxSize * style::DevicePixelRatio()),
+				QImage::Format_ARGB32_Premultiplied);
+			image.fill(Qt::white);
+			image.setDevicePixelRatio(style::DevicePixelRatio());
+			state->qrImage = std::move(image);
 		}
 		const auto resultWidth = qrMaxSize
 			+ rect::m::sum::h(state->backgroundMargins);
@@ -475,6 +482,15 @@ void FillPeerQrBox(
 		p.drawImage(0, 0, userpicMedia->image(userpicSize));
 	}, userpic->lifetime());
 
+	linkValue() | rpl::start_with_next([=](const QString &link) {
+		if (link.isEmpty()) {
+			box->showFinishes() | rpl::start_with_next([=] {
+				box->closeBox();
+			}, box->lifetime());
+			box->closeBox();
+		}
+	}, box->lifetime());
+
 	userpic->setVisible(peer != nullptr);
 	PrepareQrWidget(
 		box->verticalLayout(),