Struct CellLayout 

pub struct CellLayout { /* private fields */ }

👎Deprecated:

Since 4.10

List views use widgets to display their contents. See LayoutManager for layout manager delegate objects

## Subclassing GtkCellLayout implementations

When subclassing a widget that implements `GtkCellLayout` like
`GtkIconView` or `GtkComboBox`, there are some considerations related
to the fact that these widgets internally use a `GtkCellArea`.
The cell area is exposed as a construct-only property by these
widgets. This means that it is possible to e.g. do

```c
GtkWIdget *combo =
  g_object_new (GTK_TYPE_COMBO_BOX, "cell-area", my_cell_area, NULL);
```text

to use a custom cell area with a combo box. But construct properties
are only initialized after instance `init()`
functions have run, which means that using functions which rely on
the existence of the cell area in your subclass `init()` function will
cause the default cell area to be instantiated. In this case, a provided
construct property value will be ignored (with a warning, to alert
you to the problem).

```c
static void
my_combo_box_init (MyComboBox *b)
{
  GtkCellRenderer *cell;

  cell = gtk_cell_renderer_pixbuf_new ();

  // The following call causes the default cell area for combo boxes,
  // a GtkCellAreaBox, to be instantiated
  gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (b), cell, FALSE);
  ...
}

GtkWidget *
my_combo_box_new (GtkCellArea *area)
{
  // This call is going to cause a warning about area being ignored
  return g_object_new (MY_TYPE_COMBO_BOX, "cell-area", area, NULL);
}
```text

If supporting alternative cell areas with your derived widget is
not important, then this does not have to concern you. If you want
to support alternative cell areas, you can do so by moving the
problematic calls out of `init()` and into a `constructor()`
for your class.

# Implements

[`CellLayoutExt`][trait@crate::prelude::CellLayoutExt], [`CellLayoutExtManual`][trait@crate::prelude::CellLayoutExtManual]

GLib type: GObject with reference counted clone semantics.

Implementations

impl CellLayout

pub const NONE: Option<&'static CellLayout> = None

👎Deprecated:

Since 4.10

Trait Implementations

impl Clone for CellLayout

fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CellLayout

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

Formats the value using the given formatter.

impl Eq for CellLayout

impl HasParamSpec for CellLayout

type ParamSpec = ParamSpecObject

type SetValue = CellLayout

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(&str) -> ParamSpecObjectBuilder<'_, CellLayout>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for CellLayout

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Hashes the memory address of this object.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IsA<CellLayout> for CellArea

impl IsA<CellLayout> for CellAreaBox

impl IsA<CellLayout> for CellView

impl IsA<CellLayout> for ComboBox

impl IsA<CellLayout> for ComboBoxText

impl IsA<CellLayout> for EntryCompletion

impl IsA<CellLayout> for IconView

impl IsA<CellLayout> for TreeViewColumn

impl<T: CellLayoutImpl> IsImplementable<T> for CellLayout

fn interface_init(iface: &mut Interface<Self>)

Override the virtual methods of this interface for the given subclass and do other interface initialization.

fn instance_init(_instance: &mut InitializingObject<T>)

Instance specific initialization.

impl Ord for CellLayout

fn cmp(&self, other: &Self) -> Ordering

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<OT: ObjectType> PartialEq<OT> for CellLayout

fn eq(&self, other: &OT) -> bool

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType> PartialOrd<OT> for CellLayout

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for CellLayout

fn static_type() -> Type

Returns the type identifier of Self.