* Copyright (c) 2023-2026 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "foundation/arkui/ace_engine/adapter/android/osal/high_contrast_observer.h"
#include "platform/common/rs_accessibility.h"
namespace OHOS {
namespace Rosen {
class RSAccessibilityAndroid : public RSAccessibility {
public:
void ListenHighContrastChange(OnHighContrastChange callback) override;
private:
void ListenHighContrast();
void OnConfigChanged(bool newHighContrast);
bool listeningHighContrast_ = false;
Ace::Platform::ListenHighContrastCallback highContrastCallback_;
OnHighContrastChange onHighContrastChange_ = nullptr;
};
RSAccessibility &RSAccessibility::GetInstance()
{
static RSAccessibilityAndroid instance;
return instance;
}
void RSAccessibilityAndroid::ListenHighContrastChange(OnHighContrastChange callback)
{
onHighContrastChange_ = callback;
ListenHighContrast();
}
void RSAccessibilityAndroid::ListenHighContrast()
{
if (!listeningHighContrast_) {
highContrastCallback_ = [](bool highContrastEnabled) {
auto& accessibility = static_cast<RSAccessibilityAndroid&>(RSAccessibility::GetInstance());
accessibility.OnConfigChanged(highContrastEnabled);
};
Ace::Platform::HighContrastObserver::GetInstance().SetListenHighContrastCallback(
Ace::Platform::ListenHighContrastCallback(highContrastCallback_));
listeningHighContrast_ = true;
}
}
void RSAccessibilityAndroid::OnConfigChanged(bool newHighContrast)
{
if (onHighContrastChange_ != nullptr) {
onHighContrastChange_(newHighContrast);
}
}
}
}