voxel/hUI
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slider stuff

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griffi-gh 2024-03-22 15:15:47 +01:00
parent ccb7d22a58
commit 84d494f8a8
1 changed files with 30 additions and 19 deletions
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49
hui/src/element/builtin/slider.rs
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@ -12,6 +12,10 @@ use crate::{
signal::{trigger::SignalTriggerArg, Signal},
};
//TODO: use state for slider?
// ^ useful if the user only hanldes the drag end event or has large step sizes with relative mode
/// Follow mode for the slider
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, Default)]
pub enum SliderFollowMode {
@ -52,6 +56,11 @@ pub struct Slider {
#[setters(into)]
pub track_active_color: FillColor,
/// Track height relative to the slider height\
///
/// Range: 0.0..=1.0
pub track_height_ratio: f32,
/// Follow mode
pub follow_mode: SliderFollowMode,
@ -64,9 +73,10 @@ impl Default for Slider {
Self {
value: 0.0,
size: Size2d::default(),
handle_color: (0.0, 0.0, 1.0).into(),
handle_color: (0.0, 0.0, 1.).into(),
track_color: (0.5, 0.5, 0.5).into(),
track_active_color: (0.0, 0.0, 0.75).into(),
track_height_ratio: 0.25,
follow_mode: SliderFollowMode::default(),
on_change: None
}
@ -74,7 +84,7 @@ impl Default for Slider {
}
impl Slider {
pub const DEFAULT_HEIGHT: f32 = 21.0;
pub const DEFAULT_HEIGHT: f32 = 20.0;
pub fn new(value: f32) -> Self {
Self {
@ -104,18 +114,25 @@ impl UiElement for Slider {
}
fn process(&self, ctx: ProcessContext) {
//TODO: unhardcode this
let bgrect_height_ratio = 0.33;
//XXX: some of these assumptions are wrong if the corners are rounded
//Compute handle size:
// 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)
};
//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
//However, if the handle is not opaque, we need to draw the background as the active part won't quite reach the end
//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.)) {
if !(self.track_color.is_transparent() || (self.track_active_color.is_opaque() && self.handle_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),
position: ctx.layout.position + ctx.measure.size * vec2(0., 0.5 - self.track_height_ratio / 2.),
size: ctx.measure.size * vec2(1., self.track_height_ratio),
color: self.track_color.into(),
texture: None,
rounded_corners: None,
@ -124,10 +141,11 @@ impl UiElement for Slider {
//"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.) {
//But if the handle is not opaque, it should be visible even if value is zero
if !(self.track_active_color.is_transparent() || (self.value <= 0. && self.handle_color.is_opaque())) {
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),
position: ctx.layout.position + ctx.measure.size * vec2(0., 0.5 - self.track_height_ratio / 2.),
size: (ctx.measure.size - handle_size * Vec2::X) * vec2(self.value, self.track_height_ratio) + handle_size * Vec2::X / 2.,
color: self.track_active_color.into(),
texture: None,
rounded_corners: None,
@ -135,14 +153,7 @@ impl UiElement for Slider {
}
// 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. {
if handle_size.x != 0. && !self.handle_color.is_transparent() {
let value = self.value.clamp(0., 1.);
ctx.draw.add(UiDrawCommand::Rectangle {
position: ctx.layout.position + ((ctx.measure.size.x - handle_size.x) * value) * Vec2::X,