imgui 0.0.15

High-level Rust bindings to dear imgui
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79

use imgui_sys;
use std::{f32, mem, ptr};
use std::marker::PhantomData;
use std::os::raw::c_float;

use super::{ImStr, ImVec2, Ui};

#[must_use]
pub struct PlotHistogram<'ui, 'p> {
    label: &'p ImStr,
    values: &'p [f32],
    values_offset: usize,
    overlay_text: Option<&'p ImStr>,
    scale_min: f32,
    scale_max: f32,
    graph_size: ImVec2,
    _phantom: PhantomData<&'ui Ui<'ui>>,
}

impl<'ui, 'p> PlotHistogram<'ui, 'p> {
    pub fn new(_: &Ui<'ui>, label: &'p ImStr, values: &'p [f32]) -> Self {
        PlotHistogram {
            label: label,
            values: values,
            values_offset: 0usize,
            overlay_text: None,
            scale_min: f32::MAX,
            scale_max: f32::MAX,
            graph_size: ImVec2::new(0.0f32, 0.0f32),
            _phantom: PhantomData,
        }
    }

    #[inline]
    pub fn values_offset(mut self, values_offset: usize) -> Self {
        self.values_offset = values_offset;
        self
    }

    #[inline]
    pub fn overlay_text(mut self, overlay_text: &'p ImStr) -> Self {
        self.overlay_text = Some(overlay_text);
        self
    }

    #[inline]
    pub fn scale_min(mut self, scale_min: f32) -> Self {
        self.scale_min = scale_min;
        self
    }

    #[inline]
    pub fn scale_max(mut self, scale_max: f32) -> Self {
        self.scale_max = scale_max;
        self
    }

    #[inline]
    pub fn graph_size<S: Into<ImVec2>>(mut self, graph_size: S) -> Self {
        self.graph_size = graph_size.into();
        self
    }

    pub fn build(self) {
        unsafe {
            imgui_sys::igPlotHistogram(self.label.as_ptr(),
                                       self.values.as_ptr() as *const c_float,
                                       self.values.len() as i32,
                                       self.values_offset as i32,
                                       self.overlay_text
                                           .map(|x| x.as_ptr())
                                           .unwrap_or(ptr::null()),
                                       self.scale_min,
                                       self.scale_max,
                                       self.graph_size,
                                       mem::size_of::<f32>() as i32);
        }
    }
}