init

Telegram/lib_base/base/screen_reader_state.cpp

@@ -0,0 +1,31 @@
+#include "base/screen_reader_state.h"
+
+namespace base {
+
+ScreenReaderState *ScreenReaderState::Instance() {
+	static auto instance = ScreenReaderState();
+	return &instance;
+}
+
+ScreenReaderState::ScreenReaderState()
+: _isActive(QAccessible::isActive()) {
+	QAccessible::installActivationObserver(this);
+}
+
+ScreenReaderState::~ScreenReaderState() {
+	QAccessible::removeActivationObserver(this);
+}
+
+void ScreenReaderState::accessibilityActiveChanged(bool active) {
+	_isActive = active;
+}
+
+bool ScreenReaderState::active() const {
+	return _isActive.current();
+}
+
+rpl::producer<bool> ScreenReaderState::activeValue() const {
+	return _isActive.value();
+}
+
+} // namespace base