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Merged
seungsoo47 merged 3 commits into from
Apr 7, 2026
Merged

Add gdbus callback for Aurum (accessibility status monitoring) #167

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Add gdbus callback for Aurum
seungsoo47 Mar 30, 2026
704f553
Apply gemini's comments
seungsoo47 Apr 2, 2026
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seungsoo47 Apr 6, 2026
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136 changes: 113 additions & 23 deletions flutter/shell/platform/tizen/accessibility_settings.cc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,23 +15,71 @@
namespace flutter {

AccessibilitySettings::AccessibilitySettings(FlutterTizenEngine* engine)
: engine_(engine) {
bool tts_enabled = false;
int ret = system_settings_get_value_bool(
SYSTEM_SETTINGS_KEY_ACCESSIBILITY_TTS, &tts_enabled);
if (ret != SYSTEM_SETTINGS_ERROR_NONE) {
FT_LOG(Error) << "Failed to get value of accessibility tts.";
: engine_(engine),
dbus_is_enabled_(false),
dbus_screen_reader_enabled_(false),
dbus_proxy_(nullptr),
cancellable_(g_cancellable_new()) {
ConnectToA11yBus();
InitializeHighContrast();
}

void AccessibilitySettings::ConnectToA11yBus() {
g_dbus_proxy_new_for_bus(G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_NONE,
nullptr, // GDBusInterfaceInfo
"org.a11y.Bus", // name
"/org/a11y/bus", // object path
"org.a11y.Status", // interface
cancellable_, // GCancellable
OnDBusProxyReady, // Callback
this); // GError
}

void AccessibilitySettings::OnDBusProxyReady(GObject* source_object,
GAsyncResult* res,
gpointer user_data) {
GError* error = nullptr;
auto* self = static_cast<AccessibilitySettings*>(user_data);

self->dbus_proxy_ = g_dbus_proxy_new_for_bus_finish(res, &error);
if (!self->dbus_proxy_) {
FT_LOG(Error) << "Failed to create GDBusProxy";
if (error) {
FT_LOG(Error) << error->message;
g_error_free(error);
}
return;
}
if (tts_enabled) {
screen_reader_enabled_ = tts_enabled;
engine_->SetSemanticsEnabled(tts_enabled);
self->SetupDBusPropertyMonitoring();
}

void AccessibilitySettings::SetupDBusPropertyMonitoring() {
UpdateStateFromProxy("IsEnabled", dbus_is_enabled_);
UpdateStateFromProxy("ScreenReaderEnabled", dbus_screen_reader_enabled_);
UpdateSemanticsState();

g_signal_connect_data(dbus_proxy_, "g-properties-changed",
G_CALLBACK(OnDBusPropertiesChanged), this, nullptr,
G_CONNECT_AFTER);
}

void AccessibilitySettings::UpdateStateFromProxy(const char* property_name,
bool& property_state) {
GVariant* result =
g_dbus_proxy_get_cached_property(dbus_proxy_, property_name);

if (result) {
property_state = g_variant_get_boolean(result);
g_variant_unref(result);
} else {
FT_LOG(Error) << "Failed to get " << property_name << " state.";
}
system_settings_set_changed_cb(SYSTEM_SETTINGS_KEY_ACCESSIBILITY_TTS,
OnScreenReaderStateChanged, this);
}

void AccessibilitySettings::InitializeHighContrast() {
#ifdef TV_PROFILE
int high_contrast = 0;
ret = system_settings_get_value_int(
int ret = system_settings_get_value_int(
SYSTEM_SETTINGS_KEY_ACCESSIBILITY_HIGHCONTRAST, &high_contrast);
if (ret != SYSTEM_SETTINGS_ERROR_NONE) {
FT_LOG(Error) << "Failed to get value of accessibility high contrast.";
Expand All @@ -43,8 +91,33 @@ AccessibilitySettings::AccessibilitySettings(FlutterTizenEngine* engine)
#endif
}

void AccessibilitySettings::UpdateSemanticsState() {
bool should_enable = dbus_screen_reader_enabled_ || dbus_is_enabled_;
if (should_enable != semantics_enabled_) {
semantics_enabled_ = should_enable;
engine_->SetSemanticsEnabled(should_enable);
FT_LOG(Debug) << "Semantics state updated to: "
<< (should_enable ? "enabled" : "disabled") << " (TTS: "
<< (dbus_screen_reader_enabled_ ? "enabled" : "disabled")
<< ", a11y: " << (dbus_is_enabled_ ? "enabled" : "disabled")
<< ")";
}
}

AccessibilitySettings::~AccessibilitySettings() {
system_settings_unset_changed_cb(SYSTEM_SETTINGS_KEY_ACCESSIBILITY_TTS);

if (dbus_proxy_) {
g_object_unref(dbus_proxy_);
dbus_proxy_ = nullptr;
}

if (cancellable_) {
g_cancellable_cancel(cancellable_);
g_object_unref(cancellable_);
cancellable_ = nullptr;
}

#ifdef TV_PROFILE
system_settings_unset_changed_cb(
SYSTEM_SETTINGS_KEY_ACCESSIBILITY_HIGHCONTRAST);
Expand All @@ -69,21 +142,38 @@ void AccessibilitySettings::OnHighContrastStateChanged(
#endif
}

void AccessibilitySettings::OnScreenReaderStateChanged(
system_settings_key_e key,
void* user_data) {
void AccessibilitySettings::OnDBusPropertiesChanged(
GDBusProxy* proxy,
GVariant* changed_properties,
const gchar* const* invalidated_properties,
gpointer user_data) {
auto* self = static_cast<AccessibilitySettings*>(user_data);
bool is_changed = false;

bool enabled = false;
int ret = system_settings_get_value_bool(key, &enabled);
if (ret != SYSTEM_SETTINGS_ERROR_NONE) {
FT_LOG(Error) << "Failed to get value of accessibility tts.";
return;
GVariant* is_enabled = g_variant_lookup_value(changed_properties, "IsEnabled",
G_VARIANT_TYPE_BOOLEAN);
if (is_enabled) {
bool old_dbus_is_enabled = self->dbus_is_enabled_;
self->dbus_is_enabled_ = g_variant_get_boolean(is_enabled);
if (old_dbus_is_enabled != self->dbus_is_enabled_) {
is_changed = true;
}
g_variant_unref(is_enabled);
}

GVariant* tts_enabled = g_variant_lookup_value(
changed_properties, "ScreenReaderEnabled", G_VARIANT_TYPE_BOOLEAN);
if (tts_enabled) {
bool old_dbus_screen_reader_enabled = self->dbus_screen_reader_enabled_;
self->dbus_screen_reader_enabled_ = g_variant_get_boolean(tts_enabled);
if (old_dbus_screen_reader_enabled != self->dbus_screen_reader_enabled_) {
is_changed = true;
}
g_variant_unref(tts_enabled);
}

if (enabled != self->screen_reader_enabled_) {
self->screen_reader_enabled_ = enabled;
self->engine_->SetSemanticsEnabled(enabled);
if (is_changed) {
self->UpdateSemanticsState();
}
}

Expand Down
23 changes: 20 additions & 3 deletions flutter/shell/platform/tizen/accessibility_settings.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
#ifndef EMBEDDER_ACCESSIBILITY_SETTINGS_H_
#define EMBEDDER_ACCESSIBILITY_SETTINGS_H_

#include <gio/gio.h>
#include <system/system_settings.h>

namespace flutter {
Expand All @@ -17,13 +18,29 @@ class AccessibilitySettings {
virtual ~AccessibilitySettings();

private:
void UpdateSemanticsState();
void ConnectToA11yBus();
void InitializeHighContrast();
void SetupDBusPropertyMonitoring();
void UpdateStateFromProxy(const char* property_name, bool& property_state);

static void OnDBusProxyReady(GObject* source_object,
GAsyncResult* res,
gpointer user_data);
static void OnHighContrastStateChanged(system_settings_key_e key,
void* user_data);
static void OnScreenReaderStateChanged(system_settings_key_e key,
void* user_data);
static void OnDBusPropertiesChanged(
GDBusProxy* proxy,
GVariant* changed_properties,
const gchar* const* invalidated_properties,
gpointer user_data);

[[maybe_unused]] FlutterTizenEngine* engine_;
[[maybe_unused]] bool screen_reader_enabled_ = false;
bool semantics_enabled_ = false;
bool dbus_is_enabled_ = false;
bool dbus_screen_reader_enabled_ = false;
GDBusProxy* dbus_proxy_ = nullptr;
GCancellable* cancellable_ = nullptr;
};

} // namespace flutter
Expand Down
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