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draw: lazy_static initialize fonts

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This commit is contained in:
Kenny Levinsen
2019-08-06 00:09:41 +02:00
parent 11fd9a79c3
commit e63a28abb7
9 changed files with 36 additions and 42 deletions
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src/draw.rs
+11 -17
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@@ -1,28 +1,30 @@
use crate::buffer::Buffer;
use crate::color::Color;
use rusttype::{point, Font, Scale};
use lazy_static::lazy_static;
pub static DEJAVUSANS_MONO: &'static [u8] = include_bytes!("../fonts/dejavu/DejaVuSansMono.ttf");
pub static ROBOTO_REGULAR: &'static [u8] = include_bytes!("../fonts/Roboto-Regular.ttf");
pub static DEJAVUSANS_MONO_FONT_DATA: &'static [u8] = include_bytes!("../fonts/dejavu/DejaVuSansMono.ttf");
pub static ROBOTO_REGULAR_FONT_DATA: &'static [u8] = include_bytes!("../fonts/Roboto-Regular.ttf");
lazy_static! {
pub static ref DEJAVUSANS_MONO: Font<'static> = Font::from_bytes(DEJAVUSANS_MONO_FONT_DATA as &[u8]).expect("error constructing DejaVuSansMono");
pub static ref ROBOTO_REGULAR: Font<'static> = Font::from_bytes(ROBOTO_REGULAR_FONT_DATA as &[u8]).expect("error constructing Roboto-Regular");
}
pub fn draw_text(
font_data: &'static [u8],
font: &Font,
buf: &mut Buffer,
background_color: &Color,
color: &Color,
size: f32,
s: &str,
) -> Result<(u32, u32), ::std::io::Error> {
// Load the font
// This only succeeds if collection consists of one font
let font = Font::from_bytes(font_data as &[u8]).expect("Error constructing Font");
// The font size to use
let scale = Scale::uniform(size);
let v_metrics = font.v_metrics(scale);
// layout the glyphs in a line with 20 pixels padding
let glyphs: Vec<_> = font
.layout(s, scale, point(0.0, v_metrics.ascent))
.collect();
@@ -59,23 +61,19 @@ pub fn draw_text(
}
pub fn draw_text_individual_colors(
font_data: &'static [u8],
font: &Font,
buf: &mut Buffer,
background_color: &Color,
color: &[Color],
size: f32,
s: &str,
) -> Result<(u32, u32), ::std::io::Error> {
// Load the font
// This only succeeds if collection consists of one font
let font = Font::from_bytes(font_data as &[u8]).expect("Error constructing Font");
// The font size to use
let scale = Scale::uniform(size);
let v_metrics = font.v_metrics(scale);
// layout the glyphs in a line with 20 pixels padding
let glyphs: Vec<_> = font
.layout(s, scale, point(0.0, v_metrics.ascent))
.collect();
@@ -114,7 +112,7 @@ pub fn draw_text_individual_colors(
}
pub fn draw_text_fixed_width(
font_data: &'static [u8],
font: &Font,
buf: &mut Buffer,
background_color: &Color,
color: &Color,
@@ -122,16 +120,12 @@ pub fn draw_text_fixed_width(
distances: &[u32],
s: &str,
) -> Result<(), ::std::io::Error> {
// Load the font
// This only succeeds if collection consists of one font
let font = Font::from_bytes(font_data as &[u8]).expect("Error constructing Font");
// The font size to use
let scale = Scale::uniform(size);
let v_metrics = font.v_metrics(scale);
// layout the glyphs in a line with 20 pixels padding
let glyphs: Vec<_> = font
.layout(s, scale, point(0.0, v_metrics.ascent))
.collect();