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Always draw axis labels at plot borders

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This commit is contained in:
Johannes Schiffer
2022-11-11 10:01:04 +01:00
committed by JohannesProgrammiert
parent 307565efa5
commit 607423f9eb
1 changed files with 9 additions and 7 deletions
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16
crates/egui/src/widgets/plot/mod.rs
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@@ -1421,6 +1421,7 @@ impl PreparedPlot {
cursors
}
// `axis`=0 means x-axis, `axis`=1 means y-axis.
fn paint_axis(
&self,
ui: &Ui,
@@ -1430,7 +1431,6 @@ impl PreparedPlot {
sharp_grid_lines: bool,
) {
#![allow(clippy::collapsible_else_if)]
let Self {
transform,
axis_formatters,
@@ -1527,12 +1527,12 @@ impl PreparedPlot {
));
}
// --- axis labels
const MIN_TEXT_SPACING: f32 = 40.0;
if spacing_in_points > MIN_TEXT_SPACING {
let text_strength =
remap_clamp(spacing_in_points, MIN_TEXT_SPACING..=150.0, 0.0..=1.0);
let color = color_from_contrast(ui, text_strength);
let text: String = if let Some(formatter) = axis_formatters[axis].as_deref() {
formatter(value_main, &axis_range)
} else {
@@ -1547,11 +1547,13 @@ impl PreparedPlot {
let galley = ui.painter().layout_no_wrap(text, font_id.clone(), color);
let mut text_pos = pos_in_gui + vec2(1.0, -galley.size().y);
// Make sure we see the labels, even if the axis is off-screen:
text_pos[1 - axis] = text_pos[1 - axis]
.at_most(transform.frame().max[1 - axis] - galley.size()[1 - axis] - 2.0)
.at_least(transform.frame().min[1 - axis] + 1.0);
// move to border of plot frame
if axis == 0 {
text_pos.y = transform.frame().max[1] - galley.size()[1] - 2.0;
}
if axis == 1 {
text_pos.x = transform.frame().min[0] + 1.0;
}
shapes.push((Shape::galley(text_pos, galley), text_strength));
}