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Add subpixel_binning to TextOptions and FontTweak (#8072)

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This lets you turn off subpixel horizontal binning of glyphs. The option
is a trade-off between even kerning and sharp text.

* Closes https://github.com/emilk/egui/issues/8034
This commit is contained in:
Emil Ernerfeldt
2026-04-07 10:38:37 +02:00
committed by GitHub
parent ab4bca65ea
commit 3abba21f2d
4 changed files with 51 additions and 21 deletions
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33
crates/egui/src/style.rs
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@@ -2344,11 +2344,13 @@ impl Visuals {
max_texture_side: _,
alpha_from_coverage,
font_hinting,
subpixel_binning,
} = text_options;
text_alpha_from_coverage_ui(ui, alpha_from_coverage);
ui.checkbox(font_hinting, "Enable font hinting");
ui.checkbox(font_hinting, "Font hinting (sharper text)");
ui.checkbox(subpixel_binning, "Sub-pixel binning (more even kerning)");
});
ui.collapsing("Text cursor", |ui| {
@@ -2913,10 +2915,11 @@ impl Widget for &mut FontTweak {
scale,
y_offset_factor,
y_offset,
hinting_override,
hinting,
coords,
thin_space_width,
tab_size,
subpixel_binning,
} = self;
ui.label("Scale");
@@ -2932,18 +2935,20 @@ impl Widget for &mut FontTweak {
ui.add(DragValue::new(y_offset).speed(-0.02));
ui.end_row();
ui.label("hinting_override");
ComboBox::from_id_salt("hinting_override")
.selected_text(match hinting_override {
None => "None",
Some(true) => "Enable",
Some(false) => "Disable",
})
.show_ui(ui, |ui| {
ui.selectable_value(hinting_override, None, "None");
ui.selectable_value(hinting_override, Some(true), "Enable");
ui.selectable_value(hinting_override, Some(false), "Disable");
});
ui.label("hinting");
ui.horizontal(|ui| {
ui.radio_value(hinting, Some(true), "on");
ui.radio_value(hinting, Some(false), "off");
ui.radio_value(hinting, None, "default");
});
ui.end_row();
ui.label("subpixel_binning");
ui.horizontal(|ui| {
ui.radio_value(subpixel_binning, Some(true), "on");
ui.radio_value(subpixel_binning, Some(false), "off");
ui.radio_value(subpixel_binning, None, "default");
});
ui.end_row();
ui.label("coords");