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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/views/webauthn/authenticator_qr_centered_view.h"
#include <memory>
#include <string>
#include "base/check.h"
#include "base/containers/span.h"
#include "base/memory/raw_ptr.h"
#include "chrome/browser/ui/color/chrome_color_id.h"
#include "chrome/grit/generated_resources.h"
#include "components/qr_code_generator/bitmap_generator.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/models/image_model.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/background.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/layout/layout_provider.h"
#include "ui/views/view.h"
namespace {
constexpr int kQrCodeMargin = 40;
constexpr int kQrCodeImageSize = 240;
} // namespace
AuthenticatorQrCenteredView::AuthenticatorQrCenteredView(
const std::string& qr_string) {
views::BoxLayout* layout =
SetLayoutManager(std::make_unique<views::BoxLayout>(
views::BoxLayout::Orientation::kHorizontal));
layout->set_main_axis_alignment(views::BoxLayout::MainAxisAlignment::kCenter);
layout->set_cross_axis_alignment(
views::BoxLayout::CrossAxisAlignment::kCenter);
qr_code_image_ = AddChildViewAt(std::make_unique<views::ImageView>(), 0);
qr_code_image_->SetHorizontalAlignment(views::ImageView::Alignment::kCenter);
qr_code_image_->SetVerticalAlignment(views::ImageView::Alignment::kCenter);
qr_code_image_->SetImageSize(qrCodeImageSize());
qr_code_image_->SetPreferredSize(qrCodeImageSize() +
gfx::Size(kQrCodeMargin, kQrCodeMargin));
qr_code_image_->GetViewAccessibility().SetName(
l10n_util::GetStringUTF16(IDS_WEBAUTHN_QR_CODE_ALT_TEXT));
// TODO(https://crbug.com/325664342): Audit if `QuietZone::kIncluded`
// can/should be used instead (this may require testing if the different
// image size works well with surrounding UI elements). Note that the
// absence of a quiet zone may interfere with decoding of QR codes even for
// small codes (for examples see #comment8, #comment9 and #comment6 in the
// bug).
auto qr_code = qr_code_generator::GenerateImage(
base::as_byte_span(qr_string), qr_code_generator::ModuleStyle::kCircles,
qr_code_generator::LocatorStyle::kRounded,
qr_code_generator::CenterImage::kPasskey,
qr_code_generator::QuietZone::kWillBeAddedByClient);
// Success is guaranteed, because `qr_string`'s size is bounded and smaller
// than QR code limits.
CHECK(qr_code.has_value());
qr_code_image_->SetImage(ui::ImageModel::FromImageSkia(qr_code.value()));
qr_code_image_->SetVisible(true);
}
AuthenticatorQrCenteredView::~AuthenticatorQrCenteredView() = default;
void AuthenticatorQrCenteredView::OnThemeChanged() {
views::View::OnThemeChanged();
const int border_radius = views::LayoutProvider::Get()->GetCornerRadiusMetric(
views::Emphasis::kHigh);
qr_code_image_->SetBackground(views::CreateRoundedRectBackground(
GetColorProvider()->GetColor(kColorQrCodeBackground), border_radius, 2));
}
gfx::Size AuthenticatorQrCenteredView::qrCodeImageSize() const {
return gfx::Size(kQrCodeImageSize, kQrCodeImageSize);
}
BEGIN_METADATA(AuthenticatorQrCenteredView)
END_METADATA
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