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Handle parameter edit begin and release

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This commit is contained in:
Robbert van der Helm 2022-02-09 11:34:58 +01:00
parent a1c6d1d30a
commit 8e7a86262f
1 changed files with 12 additions and 3 deletions
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15
nih_plug_egui/src/widgets/param_slider.rs
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@ -24,17 +24,20 @@ impl<'a, P: Param> ParamSlider<'a, P> {
self.param.normalized_value()
}
fn set_normalized_value(&self, normalized: f32) {
// TODO: The gesture should start on mouse down and end up mouse up
fn begin_drag(&self) {
self.setter.begin_set_parameter(self.param);
}
fn set_normalized_value(&self, normalized: f32) {
// This snaps to the nearest plain value if the parameter is stepped in some wayA
// TODO: As an optimization, we could add a `const CONTINUOUS: bool` to the parameter to
// avoid this normalized->plain->normalized conversion for parameters that don't need
// it
let value = self.param.preview_plain(normalized);
self.setter.set_parameter(self.param, value);
}
fn end_drag(&self) {
self.setter.end_set_parameter(self.param);
}
}
@ -66,7 +69,10 @@ impl<P: Param> Widget for ParamSlider<'_, P> {
.inner;
// Handle user input
// TODO: We only show the position now
// TODO: As mentioned above, handle double click and ctrl+click, maybe also value entry
if response.drag_started() {
self.begin_drag();
}
if let Some(click_pos) = response.interact_pointer_pos() {
let aim_radius = ui.input().aim_radius();
let proportion = egui::emath::smart_aim::best_in_range_f64(
@ -84,6 +90,9 @@ impl<P: Param> Widget for ParamSlider<'_, P> {
self.set_normalized_value(proportion as f32);
}
if response.drag_released() {
self.end_drag();
}
// And finally draw the thing
if ui.is_rect_visible(response.rect) {