iris_ui/
gfx.rs

1use crate::geom::{Bounds, Point};
2use crate::view::Align;
3use embedded_graphics::mono_font::MonoFont;
4use embedded_graphics::pixelcolor::Rgb565;
5
6pub struct TextStyle<'a> {
7    pub halign: Align,
8    pub valign: Align,
9    pub underline: bool,
10    pub font: &'a MonoFont<'static>,
11    pub color: &'a Rgb565,
12}
13
14impl<'a> TextStyle<'a> {
15    pub fn new(font: &'a MonoFont<'static>, color: &'a Rgb565) -> TextStyle<'a> {
16        TextStyle {
17            font,
18            color,
19            underline: false,
20            valign: Align::Center,
21            halign: Align::Start,
22        }
23    }
24    pub fn with_underline(&self, underline: bool) -> Self {
25        TextStyle {
26            color: self.color,
27            font: self.font,
28            underline,
29            halign: self.halign,
30            valign: self.valign,
31        }
32    }
33    pub fn with_halign(&self, halign: Align) -> Self {
34        TextStyle {
35            color: self.color,
36            font: self.font,
37            underline: self.underline,
38            halign,
39            valign: self.valign,
40        }
41    }
42}
43
44pub trait DrawingContext {
45    fn fill_rect(&mut self, bounds: &Bounds, color: &Rgb565);
46    fn stroke_rect(&mut self, bounds: &Bounds, color: &Rgb565);
47    fn line(&mut self, start: &Point, end: &Point, color: &Rgb565);
48    fn fill_text(&mut self, bounds: &Bounds, text: &str, style: &TextStyle);
49    fn text(&mut self, text: &str, position: &Point, style: &TextStyle);
50    fn translate(&mut self, offset: &Point);
51}
52
53pub fn draw_centered_text(
54    ctx: &mut dyn DrawingContext,
55    text: &str,
56    bounds: &Bounds,
57    font: &MonoFont<'static>,
58    color: &Rgb565,
59) {
60    ctx.text(
61        text,
62        &bounds.center(),
63        &TextStyle {
64            font,
65            color,
66            valign: Align::Center,
67            halign: Align::Center,
68            underline: false,
69        },
70    )
71}
iris_ui/gfx.rs

iris_ui/
gfx.rs
