mirror of
https://github.com/emilk/egui.git
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1088d950e9
Changes: * New `BarChart` and `BoxPlot` diagrams * New `FloatOrd` trait for total ordering of float types * Refactoring of existing plot items Co-authored-by: niladic <git@nil.choron.cc>
62 lines
2.1 KiB
Rust
62 lines
2.1 KiB
Rust
use super::{Orientation, Value};
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use crate::plot::transform::{PlotBounds, ScreenTransform};
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use epaint::emath::NumExt;
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use epaint::{Color32, Rgba, Stroke};
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/// Trait that abstracts from rectangular 'Value'-like elements, such as bars or boxes
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pub(super) trait RectElement {
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fn name(&self) -> &str;
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fn bounds_min(&self) -> Value;
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fn bounds_max(&self) -> Value;
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fn bounds(&self) -> PlotBounds {
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let mut bounds = PlotBounds::NOTHING;
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bounds.extend_with(&self.bounds_min());
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bounds.extend_with(&self.bounds_max());
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bounds
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}
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/// At which argument (input; usually X) there is a ruler (usually vertical)
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fn arguments_with_ruler(&self) -> Vec<Value> {
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// Default: one at center
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vec![self.bounds().center()]
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}
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/// At which value (output; usually Y) there is a ruler (usually horizontal)
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fn values_with_ruler(&self) -> Vec<Value>;
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/// The diagram's orientation (vertical/horizontal)
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fn orientation(&self) -> Orientation;
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/// Get X/Y-value for (argument, value) pair, taking into account orientation
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fn point_at(&self, argument: f64, value: f64) -> Value {
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match self.orientation() {
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Orientation::Horizontal => Value::new(value, argument),
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Orientation::Vertical => Value::new(argument, value),
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}
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}
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/// Right top of the rectangle (position of text)
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fn corner_value(&self) -> Value {
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//self.point_at(self.position + self.width / 2.0, value)
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Value {
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x: self.bounds_max().x,
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y: self.bounds_max().y,
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}
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}
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/// Debug formatting for hovered-over value, if none is specified by the user
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fn default_values_format(&self, transform: &ScreenTransform) -> String;
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}
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// ----------------------------------------------------------------------------
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// Helper functions
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pub(super) fn highlighted_color(mut stroke: Stroke, fill: Color32) -> (Stroke, Color32) {
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stroke.width *= 2.0;
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let fill = Rgba::from(fill);
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let fill_alpha = (2.0 * fill.a()).at_most(1.0);
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let fill = fill.to_opaque().multiply(fill_alpha);
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(stroke, fill.into())
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}
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