voxel/hUI
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add active part to slider, optimize rendering

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griffi-gh 2024-03-21 23:51:00 +01:00
parent 68114bd7dc
commit 4ad3fed6d3
1 changed files with 49 additions and 18 deletions
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37
hui/src/element/builtin/slider.rs
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@ -48,6 +48,10 @@ pub struct Slider {
#[setters(into)]
pub track_color: FillColor,
/// Color of the "active" part of the slider
#[setters(into)]
pub track_active_color: FillColor,
/// Follow mode
pub follow_mode: SliderFollowMode,
@ -62,6 +66,7 @@ impl Default for Slider {
size: Size2d::default(),
handle_color: (0.0, 0.0, 1.0).into(),
track_color: (0.5, 0.5, 0.5).into(),
track_active_color: (0.0, 0.0, 0.75).into(),
follow_mode: SliderFollowMode::default(),
on_change: None
}
@ -102,6 +107,12 @@ impl UiElement for Slider {
//TODO: unhardcode this
let bgrect_height_ratio = 0.33;
//XXX: some of these assumptions are wrong if the corners are rounded
//Draw the track
//If the active part is opaque and value >= 1., we don't need to draw the background as the active part will cover it
//Of corse, if it's fully transparent, we don't need to draw it either
if !(self.track_color.is_transparent() || (self.track_active_color.is_opaque() && self.value >= 1.)) {
ctx.draw.add(UiDrawCommand::Rectangle {
position: ctx.layout.position + ctx.measure.size * vec2(0., 0.5 - bgrect_height_ratio / 2.),
size: ctx.measure.size * vec2(1., bgrect_height_ratio),
@ -109,9 +120,30 @@ impl UiElement for Slider {
texture: None,
rounded_corners: None,
});
}
//"Active" part of the track
//We can skip drawing it if it's fully transparent or value <= 0.
if !(self.track_active_color.is_transparent() || self.value <= 0.) {
ctx.draw.add(UiDrawCommand::Rectangle {
position: ctx.layout.position + ctx.measure.size * vec2(0., 0.5 - bgrect_height_ratio / 2.),
size: ctx.measure.size * vec2(self.value, bgrect_height_ratio),
color: self.track_active_color.into(),
texture: None,
rounded_corners: None,
});
}
// The handle
// This is kinda counter-intuitive, but if the handle is transparent, we treat it as completely disabled
// To prevent confusing offset from the edge of the slider, we set the handle size to 0
let handle_size = if self.handle_color.is_transparent() {
Vec2::ZERO
} else {
vec2(15., ctx.measure.size.y)
};
if handle_size.x != 0. {
let value = self.value.clamp(0., 1.);
let handle_size = vec2(15., ctx.measure.size.y);
ctx.draw.add(UiDrawCommand::Rectangle {
position: ctx.layout.position + ((ctx.measure.size.x - handle_size.x) * value) * Vec2::X,
size: handle_size,
@ -119,6 +151,7 @@ impl UiElement for Slider {
texture: None,
rounded_corners: None,
});
}
//handle events
if let Some(res) = ctx.input.check_active(ctx.measure.rect(ctx.layout.position)) {
@ -137,5 +170,3 @@ impl UiElement for Slider {
}
}
}
//TODO