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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 <jni.h>
#include <string>
#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "base/containers/span.h"
#include "base/strings/utf_string_conversions.h"
#include "components/qr_code_generator/bitmap_generator.h"
#include "ui/gfx/android/java_bitmap.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "chrome/android/chrome_jni_headers/QRCodeGenerator_jni.h"
using base::android::ConvertJavaStringToUTF8;
using base::android::JavaParamRef;
using base::android::ScopedJavaLocalRef;
static ScopedJavaLocalRef<jobject> JNI_QRCodeGenerator_GenerateBitmap(
JNIEnv* env,
const JavaParamRef<jstring>& j_data_string) {
// 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).
std::string url_string(ConvertJavaStringToUTF8(env, j_data_string));
auto qr_image = qr_code_generator::GenerateBitmap(
base::as_byte_span(url_string), qr_code_generator::ModuleStyle::kCircles,
qr_code_generator::LocatorStyle::kRounded,
qr_code_generator::CenterImage::kDino,
qr_code_generator::QuietZone::kWillBeAddedByClient);
ScopedJavaLocalRef<jobject> java_bitmap;
if (qr_image.has_value()) {
java_bitmap = gfx::ConvertToJavaBitmap(qr_image.value());
}
return java_bitmap;
}
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