Struct gtk4::Grid[][src]

pub struct Grid(_);
Expand description

Grid is a container which arranges its child widgets in rows and columns.

An example GtkGrid

It supports arbitrary positions and horizontal/vertical spans.

Children are added using GridExt::attach(). They can span multiple rows or columns. It is also possible to add a child next to an existing child, using GridExt::attach_next_to(). To remove a child from the grid, use GridExt::remove().

The behaviour of Grid when several children occupy the same grid cell is undefined.

GtkGrid as GtkBuildable

Every child in a Grid has access to a custom Buildable element, called ´<layout>´. It can by used to specify a position in the grid and optionally spans. All properties that can be used in the ´<layout>´ element are implemented by GridLayoutChild.

It is implemented by Widget using LayoutManager.

To showcase it, here is a simple example:

<object class="GtkGrid" id="my_grid">
  <child>
    <object class="GtkButton" id="button1">
      <property name="label">Button 1</property>
      <layout>
        <property name="column">0</property>
        <property name="row">0</property>
      </layout>
    </object>
  </child>
  <child>
    <object class="GtkButton" id="button2">
      <property name="label">Button 2</property>
      <layout>
        <property name="column">1</property>
        <property name="row">0</property>
      </layout>
    </object>
  </child>
  <child>
    <object class="GtkButton" id="button3">
      <property name="label">Button 3</property>
      <layout>
        <property name="column">2</property>
        <property name="row">0</property>
        <property name="row-span">2</property>
      </layout>
    </object>
  </child>
  <child>
    <object class="GtkButton" id="button4">
      <property name="label">Button 4</property>
      <layout>
        <property name="column">0</property>
        <property name="row">1</property>
        <property name="column-span">2</property>
      </layout>
    </object>
  </child>
</object>

It organizes the first two buttons side-by-side in one cell each. The third button is in the last column but spans across two rows. This is defined by the ´row-span´ property. The last button is located in the second row and spans across two columns, which is defined by the ´column-span´ property.

CSS nodes

Grid uses a single CSS node with name grid.

Accessibility

Grid uses the AccessibleRole::Group role.

Implements

GridExt, WidgetExt, glib::ObjectExt, AccessibleExt, BuildableExt, ConstraintTargetExt, OrientableExt, WidgetExtManual, AccessibleExtManual

Implementations

Creates a new grid widget.

Returns

the new Grid

Creates a new builder-pattern struct instance to construct Grid objects.

This method returns an instance of GridBuilder which can be used to create Grid objects.

Trait Implementations

Returns a copy of the value. Read more

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Override the virtual methods of this class for the given subclass and do other class initialization. Read more

Instance specific initialization. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Returns the type identifier of Self.

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Gets the TypeId of self. Read more

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Upcasts an object to a superclass or interface T. Read more

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Tries to cast to reference to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more

Casts to T unconditionally. Read more

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Performs the conversion.

Performs the conversion.

Returns true if the object is an instance of (can be cast to) T.

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Same as connect but takes a SignalId instead of a signal name.

Same as connect_local but takes a SignalId instead of a signal name.

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Emit signal by signal id.

Same as emit but takes Value for the arguments.

Emit signal by its name.

Same as emit_by_name but takes Value for the arguments.

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Same as emit_with_details but takes Value for the arguments.

The resulting type after obtaining ownership.

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The type returned in the event of a conversion error.

Performs the conversion.

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