Struct FrameModifier 

pub struct FrameModifier {
    pub width: Option<f32>,
    pub height: Option<f32>,
    pub min_width: Option<f32>,
    pub max_width: Option<f32>,
    pub min_height: Option<f32>,
    pub max_height: Option<f32>,
    pub alignment: Alignment,
}

Modifier to set the size and alignment constraints of a view. This determines the proposal size passed to the child and how the child is aligned within the layout rect allocated to the frame.

Fields

width: Option<f32>

Exact width to assign to the child view.

height: Option<f32>

Exact height to assign to the child view.

min_width: Option<f32>

Minimum width constraint for the view.

max_width: Option<f32>

Maximum width constraint for the view.

min_height: Option<f32>

Minimum height constraint for the view.

max_height: Option<f32>

Maximum height constraint for the view.

alignment: Alignment

The alignment strategy for positioning the child view within the frame.

Implementations

impl FrameModifier

pub fn new() -> Self

Creates a new FrameModifier with all dimensions unspecified and center alignment.

pub fn width(self, width: f32) -> Self

Sets the fixed width of the frame.

pub fn height(self, height: f32) -> Self

Sets the fixed height of the frame.

pub fn size(self, width: f32, height: f32) -> Self

Sets both the fixed width and height of the frame.

pub fn min_width(self, min_width: f32) -> Self

Sets the minimum width constraint.

pub fn max_width(self, max_width: f32) -> Self

Sets the maximum width constraint.

pub fn min_height(self, min_height: f32) -> Self

Sets the minimum height constraint.

pub fn max_height(self, max_height: f32) -> Self

Sets the maximum height constraint.

pub fn alignment(self, alignment: Alignment) -> Self

Sets the alignment strategy for the child within the frame’s layout bounds.

Trait Implementations

impl Clone for FrameModifier

fn clone(&self) -> FrameModifier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FrameModifier

impl Debug for FrameModifier

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

Formats the value using the given formatter.

impl Default for FrameModifier

fn default() -> Self

Returns the default frame configuration which has no constraints and center alignment.

impl PartialEq for FrameModifier

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

Tests for self and other values to be equal, and is used by ==.

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 StructuralPartialEq for FrameModifier

impl ViewModifier for FrameModifier

fn modify<V: View>(self, content: V) -> impl View

Wraps the child view in a ModifiedView using this frame modifier.

fn transform_proposal(&self, proposal: SizeProposal) -> SizeProposal

Transforms the layout size proposal offered to the child to comply with frame constraints.

fn transform_size(&self, child_size: Size) -> Size

Constraints and transforms the child’s resulting size to fit the frame’s bounds.

fn render_view<V: View>( &self, view: &V, renderer: &mut dyn Renderer, rect: Rect, )

Renders the frame’s child view aligned within the layout rect.

fn get_grid_placement(&self) -> Option<GridPlacement>

Returns the grid placement configuration if this modifier defines one.

fn render(&self, _renderer: &mut dyn Renderer, _rect: Rect)

Core rendering hook called before child views.

fn post_render(&self, _renderer: &mut dyn Renderer, _rect: Rect)

Cleanup hook called after child views.

fn transform_rect(&self, rect: Rect) -> Rect

fn measure_view<V: View>( &self, view: &V, renderer: &mut dyn Renderer, proposal: SizeProposal, ) -> Size

Measure hook that coordinates size propagation.

fn child_flex_weight<V: View>(&self, view: &V) -> f32

Allows a modifier to override or pass through the child’s flex weight.

fn layout(&self) -> Option<&dyn LayoutView>