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ImagePulseTint -> PulseAlpha

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make it more generic to pulse alpha values, not necessarily image
tints

Signed-off-by: kernelkind <kernelkind@gmail.com>
This commit is contained in:
kernelkind
2025-04-29 00:34:31 -04:00
parent a29277d263
commit a4ec0982d2
3 changed files with 23 additions and 30 deletions
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42
crates/notedeck_ui/src/anim.rs
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@@ -137,33 +137,24 @@ impl AnimationHelper {
}
}
pub struct ImagePulseTint<'a> {
pub struct PulseAlpha<'a> {
ctx: &'a egui::Context,
id: egui::Id,
image: egui::Image<'a>,
color_unmultiplied: &'a [u8; 3],
alpha_min: u8,
alpha_max: u8,
animation_speed: f32,
start_max_alpha: bool,
}
impl<'a> ImagePulseTint<'a> {
pub fn new(
ctx: &'a egui::Context,
id: egui::Id,
image: egui::Image<'a>,
color_unmultiplied: &'a [u8; 3],
alpha_min: u8,
alpha_max: u8,
) -> Self {
impl<'a> PulseAlpha<'a> {
pub fn new(ctx: &'a egui::Context, id: egui::Id, alpha_min: u8, alpha_max: u8) -> Self {
Self {
ctx,
id,
image,
color_unmultiplied,
alpha_min,
alpha_max,
animation_speed: ANIM_SPEED,
start_max_alpha: false,
}
}
@@ -172,12 +163,19 @@ impl<'a> ImagePulseTint<'a> {
self
}
pub fn animate(self) -> egui::Image<'a> {
pub fn start_max_alpha(mut self) -> Self {
self.start_max_alpha = true;
self
}
// returns the current alpha value for the frame
pub fn animate(self) -> u8 {
let pulse_direction = if let Some(pulse_dir) = self.ctx.data(|d| d.get_temp(self.id)) {
pulse_dir
} else {
self.ctx.data_mut(|d| d.insert_temp(self.id, false));
false
self.ctx
.data_mut(|d| d.insert_temp(self.id, self.start_max_alpha));
self.start_max_alpha
};
let alpha_min_f32 = self.alpha_min as f32;
@@ -196,14 +194,6 @@ impl<'a> ImagePulseTint<'a> {
.data_mut(|d| d.insert_temp(self.id, !pulse_direction));
}
let alpha =
(cur_val + alpha_min_f32).clamp(self.alpha_min as f32, self.alpha_max as f32) as u8;
self.image.tint(egui::Color32::from_rgba_unmultiplied(
self.color_unmultiplied[0],
self.color_unmultiplied[1],
self.color_unmultiplied[2],
alpha,
))
(cur_val + alpha_min_f32).clamp(self.alpha_min as f32, self.alpha_max as f32) as u8
}
}