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allow customizing handle size

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griffi-gh 2024-03-24 22:27:59 +01:00
parent dac0c7ac6d
commit 3b7059d49f
2 changed files with 28 additions and 19 deletions
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1
hui-examples/examples/ui_test_6_slider.rs
View file

@ -8,7 +8,6 @@ use hui::{
text::Text,
UiElementExt,
},
frame::FrameRect,
layout::{Alignment, Direction},
signal::Signal,
size,

38
hui/src/element/builtin/slider.rs
View file

@ -53,13 +53,19 @@ pub struct Slider {
#[setters(skip)]
pub handle: Box<dyn Frame>,
/// Track height relative to the slider height\
/// Track height *relative to the slider height*\
///
/// Range: 0.0..=1.0
pub track_height_ratio: f32,
pub track_height: f32,
/// Handle width in pixels
pub handle_width: f32,
/// Handle size
///
/// Please be aware that:
///
/// - Width is *static* and specified in *pixels* (e.g. `15.0`)
/// - Height is *relative* to the slider height,\
/// ...and is specified as a *ratio* in range `0.0..=1.0`
pub handle_size: (f32, f32),
/// Follow mode
pub follow_mode: SliderFollowMode,
@ -76,8 +82,8 @@ impl Default for Slider {
handle: Box::new(FrameRect::color((0.0, 0.0, 1.))),
track: Box::new(FrameRect::color((0.5, 0.5, 0.5))),
track_active: Box::new(FrameRect::color((0.0, 0.0, 0.75))),
track_height_ratio: 0.25,
handle_width: 15.0,
track_height: 0.25,
handle_size: (15.0, 1.),
follow_mode: SliderFollowMode::default(),
on_change: None
}
@ -140,18 +146,18 @@ impl UiElement for Slider {
// } else {
// vec2(15., ctx.measure.size.y)
// };
let handle_size = vec2(self.handle_width, ctx.measure.size.y);
let handle_size = vec2(self.handle_size.0, self.handle_size.1 * 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.handle_color.is_opaque() && self.value >= 1.)) {
if !(self.track_active.covers_opaque() && self.handle.covers_opaque() && self.value >= 1.) {
if !(self.track_active.covers_opaque() && self.handle.covers_opaque() && (self.handle_size.1 >= self.track_height) && self.value >= 1.) {
self.track.draw(
ctx.draw,
ctx.layout.position + ctx.measure.size * vec2(0., 0.5 - self.track_height_ratio / 2.),
ctx.measure.size * vec2(1., self.track_height_ratio),
ctx.layout.position + ctx.measure.size * vec2(0., 0.5 - self.track_height / 2.),
ctx.measure.size * vec2(1., self.track_height),
);
}
@ -159,11 +165,11 @@ impl UiElement for Slider {
//We can skip drawing it if it's fully transparent or 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())) {
if !(self.handle.covers_opaque() && self.value <= 0.) {
if !(self.handle.covers_opaque() && (self.handle_size.1 >= self.track_height) && self.value <= 0.) {
self.track_active.draw(
ctx.draw,
ctx.layout.position + ctx.measure.size * vec2(0., 0.5 - self.track_height_ratio / 2.),
(ctx.measure.size - handle_size * Vec2::X) * vec2(self.value, self.track_height_ratio) + handle_size * Vec2::X / 2.,
ctx.layout.position + ctx.measure.size * vec2(0., 0.5 - self.track_height / 2.),
(ctx.measure.size - handle_size * Vec2::X) * vec2(self.value, self.track_height) + handle_size * Vec2::X / 2.,
);
}
@ -178,11 +184,15 @@ impl UiElement for Slider {
// rounded_corners: None,
// });
// }
if (self.handle_size.0 > 0. && self.handle_size.1 > 0.) {
self.handle.draw(
ctx.draw,
ctx.layout.position + ((ctx.measure.size.x - handle_size.x) * self.value) * Vec2::X,
ctx.layout.position +
((ctx.measure.size.x - handle_size.x) * self.value) * Vec2::X +
ctx.measure.size.y * ((1. - self.handle_size.1) * 0.5) * Vec2::Y,
handle_size,
);
}
//handle events
if let Some(res) = ctx.input.check_active(ctx.measure.rect(ctx.layout.position)) {