use crate::math::MintVec2;
use crate::sys;
// use crate::ImStr;
use crate::Ui;
/// Builder for a progress bar widget.
///
/// # Examples
///
/// ```no_run
/// # use imgui::*;
/// # let mut imgui = Context::create();
/// # let ui = imgui.frame();
/// ProgressBar::new(0.6)
/// .size([100.0, 12.0])
/// .overlay_text("Progress!")
/// .build(&ui);
/// ```
#[derive(Copy, Clone, Debug)]
#[must_use]
pub struct ProgressBar<T = &'static str> {
fraction: f32,
size: [f32; 2],
overlay_text: Option<T>,
}
impl ProgressBar {
/// Creates a progress bar with a given fraction showing
/// the progress (0.0 = 0%, 1.0 = 100%).
///
/// The progress bar will be automatically sized to fill the entire width of the window if no
/// custom size is specified.
#[inline]
#[doc(alias = "ProgressBar")]
pub fn new(fraction: f32) -> Self {
ProgressBar {
fraction,
size: [-1.0, 0.0],
overlay_text: None,
}
}
}
impl<T: AsRef<str>> ProgressBar<T> {
/// Sets an optional text that will be drawn over the progress bar.
pub fn overlay_text<T2: AsRef<str>>(self, overlay_text: T2) -> ProgressBar<T2> {
ProgressBar {
fraction: self.fraction,
size: self.size,
overlay_text: Some(overlay_text),
}
}
/// Sets the size of the progress bar.
///
/// Negative values will automatically align to the end of the axis, zero will let the progress
/// bar choose a size, and positive values will use the given size.
#[inline]
pub fn size(mut self, size: impl Into<MintVec2>) -> Self {
self.size = size.into().into();
self
}
/// Builds the progress bar
pub fn build(self, ui: &Ui) {
unsafe {
sys::igProgressBar(
self.fraction,
self.size.into(),
ui.scratch_txt_opt(self.overlay_text),
);
}
}
}