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https://github.com/obsqrbtz/egui_knob.git
synced 2026-04-09 12:37:52 +03:00
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7 Commits
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| 76670f416f | |||
| 0aec31e81d | |||
| 81bc2295fb | |||
| 6a49e6f961 | |||
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2
Cargo.lock
generated
2
Cargo.lock
generated
@@ -896,7 +896,7 @@ dependencies = [
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[[package]]
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name = "egui_knob"
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version = "0.1.2"
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version = "0.1.4"
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dependencies = [
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"eframe",
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"egui",
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@@ -1,6 +1,6 @@
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[package]
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name = "egui_knob"
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version = "0.1.2"
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version = "0.1.4"
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edition = "2021"
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description = "A simple knob widget for egui"
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homepage = "https://github.com/obsqrbtz/egui_knob"
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@@ -20,7 +20,7 @@ To use the Knob widget in your project, add the following to your `Cargo.toml`:
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```toml
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[dependencies]
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egui = "0.30"
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egui_knob = "0.1.1"
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egui_knob = "*"
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```
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## Usage example
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29
src/lib.rs
29
src/lib.rs
@@ -81,7 +81,7 @@ impl<'a> Knob<'a> {
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impl Widget for Knob<'_> {
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fn ui(self, ui: &mut Ui) -> Response {
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let desired_size = Vec2::splat(self.size);
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let knob_size = Vec2::splat(self.size);
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let label_size = if let Some(label) = &self.label {
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let font_id = egui::FontId::proportional(self.font_size);
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@@ -97,8 +97,17 @@ impl Widget for Knob<'_> {
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Vec2::ZERO
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};
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// Adjust desired size to include label space
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let adjusted_size = Vec2::new(desired_size.x, desired_size.y + label_size.y + 12.0); // 12.0 is an offset for spacing
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let label_padding = 12.0;
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let adjusted_size = match self.label_position {
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LabelPosition::Top | LabelPosition::Bottom => {
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Vec2::new(knob_size.x, knob_size.y + label_size.y + label_padding)
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}
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LabelPosition::Left | LabelPosition::Right => {
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Vec2::new(knob_size.x + label_size.x + label_padding, knob_size.y)
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}
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};
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let (rect, response) = ui.allocate_exact_size(adjusted_size, Sense::drag());
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if response.dragged() {
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@@ -110,7 +119,7 @@ impl Widget for Knob<'_> {
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let painter = ui.painter();
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let center = rect.center();
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let radius = rect.width() / 2.0;
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let radius = knob_size.x / 2.0;
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let angle = (*self.value - self.min) / (self.max - self.min) * std::f32::consts::PI * 1.5
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- std::f32::consts::PI;
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@@ -147,19 +156,21 @@ impl Widget for Knob<'_> {
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)
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.size();
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let label_offset = 12.0;
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let label_offset = label_padding;
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let label_pos = match self.label_position {
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LabelPosition::Top => {
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center + Vec2::new(-text_size.x / 2.0, -radius - label_offset - text_size.y)
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rect.center()
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+ Vec2::new(-text_size.x / 2.0, -radius - label_offset - text_size.y)
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}
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LabelPosition::Bottom => {
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center + Vec2::new(-text_size.x / 2.0, radius + label_offset)
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rect.center() + Vec2::new(-text_size.x / 2.0, radius + label_offset)
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}
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LabelPosition::Left => {
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center + Vec2::new(-radius - label_offset - text_size.x, -text_size.y / 2.0)
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rect.center()
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+ Vec2::new(-radius - label_offset - text_size.x, -text_size.y / 2.0)
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}
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LabelPosition::Right => {
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center + Vec2::new(radius + label_offset, -text_size.y / 2.0)
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rect.center() + Vec2::new(radius + label_offset, -text_size.y / 2.0)
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}
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};
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