Struct egui::placer::Placer

pub(crate) struct Placer {
    grid: Option<GridLayout>,
    layout: Layout,
    region: Region,
}

Fields

grid: Option<GridLayout>

If set this will take precedence over layout.

layout: Layout

region: Region

Implementations

impl Placer

pub(crate) fn new(max_rect: Rect, layout: Layout) -> Self

pub(crate) fn set_grid(&mut self, grid: GridLayout)

pub(crate) fn save_grid(&mut self)

pub(crate) fn grid(&self) -> Option<&GridLayout>

pub(crate) fn is_grid(&self) -> bool

pub(crate) fn layout(&self) -> &Layout

pub(crate) fn prefer_right_to_left(&self) -> bool

pub(crate) fn min_rect(&self) -> Rect

pub(crate) fn max_rect(&self) -> Rect

pub(crate) fn force_set_min_rect(&mut self, min_rect: Rect)

pub(crate) fn cursor(&self) -> Rect

pub(crate) fn set_cursor(&mut self, cursor: Rect)

impl Placer

pub(crate) fn align_size_within_rect(&self, size: Vec2, outer: Rect) -> Rect

pub(crate) fn available_rect_before_wrap(&self) -> Rect

pub(crate) fn available_size(&self) -> Vec2

Amount of space available for a widget. For wrapping layouts, this is the maximum (after wrap).

pub(crate) fn next_space(&self, child_size: Vec2, item_spacing: Vec2) -> Rect

Returns where to put the next widget that is of the given size. The returned frame_rect will always be justified along the cross axis. This is what you then pass to advance_after_rects. Use justify_and_align to get the inner widget_rect.

pub(crate) fn next_widget_position(&self) -> Pos2

Where do we expect a zero-sized widget to be placed?

pub(crate) fn justify_and_align(&self, rect: Rect, child_size: Vec2) -> Rect

Apply justify or alignment after calling next_space.

pub(crate) fn advance_cursor(&mut self, amount: f32)

Advance the cursor by this many points. Self::min_rect will expand to contain the cursor.

pub(crate) fn advance_after_rects( &mut self, frame_rect: Rect, widget_rect: Rect, item_spacing: Vec2 )

Advance cursor after a widget was added to a specific rectangle and expand the region min_rect.

• frame_rect: the frame inside which a widget was e.g. centered
• widget_rect: the actual rect used by the widget

pub(crate) fn end_row(&mut self, item_spacing: Vec2, painter: &Painter)

Move to the next row in a grid layout or wrapping layout. Otherwise does nothing.

pub(crate) fn set_row_height(&mut self, height: f32)

Set row height in horizontal wrapping layout.

impl Placer

pub(crate) fn expand_to_include_rect(&mut self, rect: Rect)

Expand the min_rect and max_rect of this ui to include a child at the given rect.

pub(crate) fn expand_to_include_x(&mut self, x: f32)

Expand the min_rect and max_rect of this ui to include a child at the given x-coordinate.

pub(crate) fn expand_to_include_y(&mut self, y: f32)

Expand the min_rect and max_rect of this ui to include a child at the given y-coordinate.

fn next_widget_space_ignore_wrap_justify(&self, size: Vec2) -> Rect

pub(crate) fn set_max_width(&mut self, width: f32)

Set the maximum width of the ui. You won’t be able to shrink it below the current minimum size.

pub(crate) fn set_max_height(&mut self, height: f32)

Set the maximum height of the ui. You won’t be able to shrink it below the current minimum size.

pub(crate) fn set_min_width(&mut self, width: f32)

Set the minimum width of the ui. This can’t shrink the ui, only make it larger.

pub(crate) fn set_min_height(&mut self, height: f32)

Set the minimum height of the ui. This can’t shrink the ui, only make it larger.

impl Placer

pub(crate) fn debug_paint_cursor(&self, painter: &Painter, text: impl ToString)