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Diffstat (limited to 'src/services/battery-service.c')
| -rw-r--r-- | src/services/battery-service.c | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/src/services/battery-service.c b/src/services/battery-service.c deleted file mode 100644 index 0457547..0000000 --- a/src/services/battery-service.c +++ /dev/null @@ -1,378 +0,0 @@ -#include "services/battery-service.h" -#include "dbus/upower.h" -#include <math.h> - -#define DEVICE_STATE_CHARGING 1 -#define DEVICE_STATE_FULLY_CHARGED 4 - -// -// FoobarBatteryState: -// -// Structure storing the current information about the battery. -// - -struct _FoobarBatteryState -{ - gboolean is_charging; - gboolean is_charged; - gint percentage; - gint time_remaining; -}; - -G_DEFINE_BOXED_TYPE( FoobarBatteryState, foobar_battery_state, foobar_battery_state_copy, foobar_battery_state_free ) - -// -// FoobarBatteryService: -// -// Service monitoring the state of the battery. This is implemented using the UPower D-Bus API. -// - -struct _FoobarBatteryService -{ - GObject parent_instance; - FoobarBatteryState* state; - FoobarUPowerDevice* proxy; - gulong changed_handler_id; -}; - -enum -{ - PROP_STATE = 1, - N_PROPS, -}; - -static GParamSpec* props[N_PROPS] = { 0 }; - -static void foobar_battery_service_class_init ( FoobarBatteryServiceClass* klass ); -static void foobar_battery_service_init ( FoobarBatteryService* self ); -static void foobar_battery_service_get_property ( GObject* object, - guint prop_id, - GValue* value, - GParamSpec* pspec ); -static void foobar_battery_service_finalize ( GObject* object ); -static void foobar_battery_service_handle_connect ( GObject* object, - GAsyncResult* result, - gpointer userdata ); -static void foobar_battery_service_handle_properties_changed( GDBusProxy* proxy, - GVariant* changed_properties, - GStrv invalidated_properties, - gpointer userdata ); -static void foobar_battery_service_update ( FoobarBatteryService* self ); - -G_DEFINE_FINAL_TYPE( FoobarBatteryService, foobar_battery_service, G_TYPE_OBJECT ) - -// --------------------------------------------------------------------------------------------------------------------- -// State -// --------------------------------------------------------------------------------------------------------------------- - -// -// Create a new, default-initialized state structure. -// -FoobarBatteryState* foobar_battery_state_new( void ) -{ - return g_new0( FoobarBatteryState, 1 ); -} - -// -// Create a mutable copy of a state structure. -// -FoobarBatteryState* foobar_battery_state_copy( FoobarBatteryState const* self ) -{ - if ( !self ) { return NULL; } - - FoobarBatteryState* copy = g_new0( FoobarBatteryState, 1 ); - copy->is_charging = self->is_charging; - copy->is_charged = self->is_charged; - copy->percentage = self->percentage; - copy->time_remaining = self->time_remaining; - return copy; -} - -// -// Release resources associated with a state structure (NULL is allowed). -// -void foobar_battery_state_free( FoobarBatteryState* self ) -{ - g_free( self ); -} - -// -// Compare two battery state structures (NULL is allowed)/ -// -gboolean foobar_battery_state_equal( - FoobarBatteryState const* a, - FoobarBatteryState const* b ) -{ - if ( a == NULL && b == NULL ) { return TRUE; } - if ( a == NULL || b == NULL ) { return FALSE; } - - if ( a->is_charging != b->is_charging ) { return FALSE; } - if ( a->is_charged != b->is_charged ) { return FALSE; } - if ( a->percentage != b->percentage ) { return FALSE; } - if ( a->time_remaining != b->time_remaining ) { return FALSE; } - - return TRUE; -} - -// -// Indicates whether the battery is currently being charged. -// -gboolean foobar_battery_state_is_charging( FoobarBatteryState const* self ) -{ - g_return_val_if_fail( self != NULL, FALSE ); - return self->is_charging; -} - -// -// Indicates whether the battery is currently being charged. -// -void foobar_battery_state_set_charging( - FoobarBatteryState* self, - gboolean value ) -{ - g_return_if_fail( self != NULL ); - self->is_charging = !!value; -} - -// -// Indicates whether the battery is fully charged. -// -gboolean foobar_battery_state_is_charged( FoobarBatteryState const* self ) -{ - g_return_val_if_fail( self != NULL, FALSE ); - return self->is_charged; -} - -// -// Indicates whether the battery is fully charged. -// -void foobar_battery_state_set_charged( - FoobarBatteryState* self, - gboolean value ) -{ - g_return_if_fail( self != NULL ); - self->is_charged = !!value; -} - -// -// Current battery level as a percentage value. -// -gint foobar_battery_state_get_percentage( FoobarBatteryState const* self ) -{ - g_return_val_if_fail( self != NULL, 0 ); - return self->percentage; -} - -// -// Current battery level as a percentage value. -// -void foobar_battery_state_set_percentage( - FoobarBatteryState* self, - gint value ) -{ - g_return_if_fail( self != NULL ); - self->percentage = CLAMP( value, 0, 100 ); -} - -// -// Estimated remaining time until fully charged or empty in seconds. -// -gint foobar_battery_state_get_time_remaining( FoobarBatteryState const* self ) -{ - g_return_val_if_fail( self != NULL, 0 ); - return self->time_remaining; -} - -// -// Estimated remaining time until fully charged or empty in seconds. -// -void foobar_battery_state_set_time_remaining( - FoobarBatteryState* self, - gint value ) -{ - g_return_if_fail( self != NULL ); - self->time_remaining = MAX( value, 0 ); -} - -// --------------------------------------------------------------------------------------------------------------------- -// Service Implementation -// --------------------------------------------------------------------------------------------------------------------- - -// -// Static initialization for the battery service. -// -void foobar_battery_service_class_init( FoobarBatteryServiceClass* klass ) -{ - GObjectClass* object_klass = G_OBJECT_CLASS( klass ); - object_klass->get_property = foobar_battery_service_get_property; - object_klass->finalize = foobar_battery_service_finalize; - - props[PROP_STATE] = g_param_spec_boxed( - "state", - "State", - "Current state of the battery, if available.", - FOOBAR_TYPE_BATTERY_STATE, - G_PARAM_READABLE ); - g_object_class_install_properties( object_klass, N_PROPS, props ); -} - -// -// Instance initialization for the battery service. -// -void foobar_battery_service_init( FoobarBatteryService* self ) -{ - foobar_upower_device_proxy_new_for_bus( - G_BUS_TYPE_SYSTEM, - G_DBUS_PROXY_FLAGS_NONE, - "org.freedesktop.UPower", - "/org/freedesktop/UPower/devices/DisplayDevice", - NULL, - foobar_battery_service_handle_connect, - g_object_ref( self ) ); -} - -// -// Property getter implementation, mapping a property id to a method. -// -void foobar_battery_service_get_property( - GObject* object, - guint prop_id, - GValue* value, - GParamSpec* pspec ) -{ - FoobarBatteryService* self = (FoobarBatteryService*)object; - - switch ( prop_id ) - { - case PROP_STATE: - g_value_set_boxed( value, foobar_battery_service_get_state( self ) ); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID( object, prop_id, pspec ); - break; - } -} - -// -// Instance cleanup for the battery service. -// -void foobar_battery_service_finalize( GObject* object ) -{ - FoobarBatteryService* self = (FoobarBatteryService*)object; - - g_clear_signal_handler( &self->changed_handler_id, self->proxy ); - g_clear_object( &self->proxy ); - g_clear_pointer( &self->state, foobar_battery_state_free ); - - G_OBJECT_CLASS( foobar_battery_service_parent_class )->finalize( object ); -} - -// --------------------------------------------------------------------------------------------------------------------- -// Public API -// --------------------------------------------------------------------------------------------------------------------- - -// -// Create a new battery service instance. -// -FoobarBatteryService* foobar_battery_service_new( void ) -{ - return g_object_new( FOOBAR_TYPE_BATTERY_SERVICE, NULL ); -} - -// -// Get the current state of the battery, if available. -// -FoobarBatteryState const* foobar_battery_service_get_state( FoobarBatteryService* self ) -{ - g_return_val_if_fail( FOOBAR_IS_BATTERY_SERVICE( self ), NULL ); - - return self->state; -} - -// --------------------------------------------------------------------------------------------------------------------- -// Signal Handlers -// --------------------------------------------------------------------------------------------------------------------- - -// -// Called after asynchronous initialization of the D-Bus proxy. -// -void foobar_battery_service_handle_connect( - GObject* object, - GAsyncResult* result, - gpointer userdata ) -{ - (void)object; - g_autoptr( FoobarBatteryService ) self = (FoobarBatteryService*)userdata; - - g_autoptr( GError ) error = NULL; - self->proxy = foobar_upower_device_proxy_new_for_bus_finish( result, &error ); - if ( self->proxy ) - { - self->changed_handler_id = g_signal_connect( - self->proxy, - "g-properties-changed", - G_CALLBACK( foobar_battery_service_handle_properties_changed ), - self ); - foobar_battery_service_update( self ); - } - else - { - g_warning( "Unable to connect to battery status service: %s", error->message ); - } -} - -// -// Called by the D-Bus server when the battery state has changed. -// -void foobar_battery_service_handle_properties_changed( - GDBusProxy* proxy, - GVariant* changed_properties, - GStrv invalidated_properties, - gpointer userdata ) -{ - (void)proxy; - (void)changed_properties; - (void)invalidated_properties; - FoobarBatteryService* self = (FoobarBatteryService*)userdata; - - foobar_battery_service_update( self ); -} - -// --------------------------------------------------------------------------------------------------------------------- -// Helper Methods -// --------------------------------------------------------------------------------------------------------------------- - -// -// Reload the battery state. -// -void foobar_battery_service_update( FoobarBatteryService* self ) -{ - g_return_if_fail( FOOBAR_IS_BATTERY_SERVICE( self ) ); - - FoobarBatteryState* new_state = NULL; - if ( self->proxy && foobar_upower_device_get_is_present( self->proxy ) ) - { - guint state = foobar_upower_device_get_state( self->proxy ); - gint percent = (gint)round( foobar_upower_device_get_percentage( self->proxy ) ); - gboolean is_charging = state == DEVICE_STATE_CHARGING; - gboolean is_charged = - state == DEVICE_STATE_FULLY_CHARGED || - ( state == DEVICE_STATE_CHARGING && percent == 100 ); - gint time_remaining = is_charging - ? (gint)foobar_upower_device_get_time_to_full( self->proxy ) - : (gint)foobar_upower_device_get_time_to_empty( self->proxy ); - - new_state = foobar_battery_state_new( ); - foobar_battery_state_set_charging( new_state, is_charging ); - foobar_battery_state_set_charged( new_state, is_charged ); - foobar_battery_state_set_percentage( new_state, percent ); - foobar_battery_state_set_time_remaining( new_state, time_remaining ); - } - - if ( !foobar_battery_state_equal( self->state, new_state ) ) - { - g_clear_pointer( &self->state, foobar_battery_state_free ); - self->state = new_state; - g_object_notify_by_pspec( G_OBJECT( self ), props[PROP_STATE] ); - } -} |