Struct LabelSelectionState 

pub struct LabelSelectionState {
    selection: Option<CurrentSelection>,
    selection_bbox_last_frame: Rect,
    selection_bbox_this_frame: Rect,
    any_hovered: bool,
    is_dragging: bool,
    has_reached_primary: bool,
    has_reached_secondary: bool,
    text_to_copy: String,
    last_copied_galley_rect: Option<Rect>,
    painted_selections: Vec<(ShapeIdx, Vec<RowVertexIndices>)>,
}

Handles text selection in labels (NOT in crate::TextEdit)s.

One state for all labels, because we only support text selection in one label at a time.

Fields

selection: Option<CurrentSelection>

The current selection, if any.

selection_bbox_last_frame: Rect

selection_bbox_this_frame: Rect

any_hovered: bool

Any label hovered this frame?

is_dragging: bool

Are we in drag-to-select state?

has_reached_primary: bool

Have we reached the widget containing the primary selection?

has_reached_secondary: bool

Have we reached the widget containing the secondary selection?

text_to_copy: String

Accumulated text to copy.

last_copied_galley_rect: Option<Rect>

painted_selections: Vec<(ShapeIdx, Vec<RowVertexIndices>)>

Painted selections this frame.

Kept so we can undo a bad selection visualization if we don’t see both ends of the selection this frame.

Implementations

impl LabelSelectionState

pub fn has_selection(&self) -> bool

pub fn clear_selection(&mut self)

fn copy_text( &mut self, new_galley_rect: Rect, galley: &Galley, cursor_range: &CCursorRange, )

pub fn label_text_selection( ui: &Ui, response: &Response, galley_pos: Pos2, galley: Arc<Galley>, fallback_color: Color32, underline: Stroke, )

Handle text selection state for a label or similar widget.

Make sure the widget senses clicks and drags.

This also takes care of painting the galley.

fn cursor_for( &mut self, ui: &Ui, response: &Response, global_from_galley: TSTransform, galley: &Galley, ) -> TextCursorState

fn on_label( &mut self, ui: &Ui, response: &Response, galley_pos_in_layer: Pos2, galley: &mut Arc<Galley>, ) -> Vec<RowVertexIndices>

Returns the painted selections, if any.

Trait Implementations

impl Clone for LabelSelectionState

fn clone(&self) -> LabelSelectionState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LabelSelectionState

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

Formats the value using the given formatter.

impl Default for LabelSelectionState

fn default() -> Self

Returns the “default value” for a type.

impl Plugin for LabelSelectionState

fn debug_name(&self) -> &'static str

Plugin name.

fn on_begin_pass(&mut self, ctx: &Context)

Called at the start of each pass.

fn on_end_pass(&mut self, ctx: &Context)

Called at the end of each pass.

fn setup(&mut self, ctx: &Context)

Called once, when the plugin is registered.

fn input_hook(&mut self, input: &mut RawInput)

Called just before the input is processed.

fn output_hook(&mut self, output: &mut FullOutput)

Called just before the output is passed to the backend.