Struct Waveform 

pub struct Waveform {
    paintable: WaveformPaintable,
    position: Cell<f32>,
    animation: OnceCell<TimedAnimation>,
    hover_position: Cell<Option<f32>>,
    paintable_cache: RefCell<Option<Paintable>>,
}

Fields

paintable: WaveformPaintable

The paintable that draws the waveform.

position: Cell<f32>

The current position in the audio stream.

Must be a value between 0 and 1.

animation: OnceCell<TimedAnimation>

The animation for the transition between waveforms.

hover_position: Cell<Option<f32>>

The current hover position, if any.

paintable_cache: RefCell<Option<Paintable>>

The cached paintable.

We only need to redraw it when the waveform changes of the widget is resized.

Implementations

impl Waveform

fn register_type()

Registers the type only once.

impl Waveform

pub fn downgrade(&self) -> <Self as Downgrade>::Weak

impl Waveform

pub(super) fn set_waveform(&self, waveform: Vec<f32>)

Set the waveform to display.

The values must be normalized between 0 and 1.

pub(super) fn set_position(&self, position: f32)

Set the current position in the audio stream.

fn animation(&self) -> &TimedAnimation

The animation for the waveform change.

fn paintable(&self) -> Option<Paintable>

fn x_coord_to_position(&self, x: f64) -> f32

Convert the given x coordinate on the waveform to a relative position.

Takes into account the text direction.

Returns a value between 0 and 1.

fn emit_seek(&self, new_position: f32)

Emit the seek signal with the given new position, if it is different from the current position.

fn init_event_controllers(&self)

Initialize the event controllers on the waveform.

Trait Implementations

impl Debug for Waveform

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Waveform

fn default() -> Waveform

Returns the “default value” for a type.

impl DerivedObjectProperties for Waveform

fn derived_properties() -> &'static [ParamSpec]

Properties installed for this type.

fn derived_property(&self, id: usize, pspec: &ParamSpec) -> Value

Similar to ObjectImpl but auto-generated by the Properties macro to allow handling more complex use-cases.

fn derived_set_property(&self, id: usize, value: &Value, pspec: &ParamSpec)

Similar to ObjectImpl but auto-generated by the Properties macro to allow handling more complex use-cases.

impl ObjectImpl for Waveform

fn signals() -> &'static [Signal]

Signals installed for this type.

fn constructed(&self)

Constructed.

fn properties() -> &'static [ParamSpec]

Properties installed for this type.

fn set_property(&self, id: usize, value: &Value, pspec: &ParamSpec)

Property setter.

fn property(&self, id: usize, pspec: &ParamSpec) -> Value

Property getter.

fn dispose(&self)

Disposes of the object.

fn notify(&self, pspec: &ParamSpec)

Function to be called when property change is notified for with self.notify("property").

fn dispatch_properties_changed(&self, pspecs: &[ParamSpec])

impl ObjectSubclass for Waveform

const NAME: &'static str = "Waveform"

GObject type name.

type Interfaces = ()

List of interfaces implemented by this type.

type Class = ClassStruct<Waveform>

The C class struct.

type Instance = InstanceStruct<Waveform>

The C instance struct.

type Type = Waveform

Wrapper around this subclass defined with wrapper!

type ParentType = Widget

Parent Rust type to inherit from.

fn new() -> Self

Constructor.

fn class_init(klass: &mut Self::Class)

Class initialization.

const ABSTRACT: bool = false

If this subclass is an abstract class or not.

const ALLOW_NAME_CONFLICT: bool = false

Allow name conflicts for this class.

fn type_init(_type_: &mut InitializingType<Self>)

Additional type initialization.

fn with_class(_klass: &Self::Class) -> Self

Constructor.

fn instance_init(_obj: &InitializingObject<Self>)

Performs additional instance initialization.

impl ObjectSubclassType for Waveform

fn type_data() -> NonNull<TypeData>

Storage for the type-specific data used during registration.

fn type_() -> Type

Returns the glib::Type ID of the subclass.

impl WidgetImpl for Waveform

fn request_mode(&self) -> SizeRequestMode

fn measure( &self, orientation: Orientation, _for_size: i32, ) -> (i32, i32, i32, i32)

fn size_allocate(&self, width: i32, _height: i32, _baseline: i32)

fn snapshot(&self, snapshot: &Snapshot)

fn compute_expand(&self, hexpand: &mut bool, vexpand: &mut bool)

fn contains(&self, x: f64, y: f64) -> bool

fn direction_changed(&self, previous_direction: TextDirection)

fn focus(&self, direction_type: DirectionType) -> bool

fn grab_focus(&self) -> bool

fn hide(&self)

👎Deprecated: Since 4.10

fn keynav_failed(&self, direction_type: DirectionType) -> bool

fn map(&self)

fn mnemonic_activate(&self, group_cycling: bool) -> bool

fn move_focus(&self, direction_type: DirectionType)

fn query_tooltip( &self, x: i32, y: i32, keyboard_tooltip: bool, tooltip: &Tooltip, ) -> bool

fn realize(&self)

fn root(&self)

fn set_focus_child(&self, child: Option<&Widget>)

fn show(&self)

👎Deprecated: Since 4.10

fn state_flags_changed(&self, state_flags: &StateFlags)

fn system_setting_changed(&self, settings: &SystemSetting)

fn unmap(&self)

fn unrealize(&self)

fn unroot(&self)