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Add proportional font rendering example

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Jeremy Soller 2022-10-03 12:00:17 -06:00
parent f03a75d75f
commit a900ab0935
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GPG key ID: 87F211AF2BE4C2FE
8 changed files with 232 additions and 3 deletions
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12
examples/text/src/main.rs
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@ -25,7 +25,10 @@ fn main() {
&[WindowFlag::Resizable]
).unwrap();
let text = include_str!("../res/UTF-8-demo.txt");
#[cfg(feature = "mono")]
let text = include_str!("../res/mono.txt");
#[cfg(not(feature = "mono"))]
let text = include_str!("../res/proportional.txt");
let lines: Vec<&'static str> = text.lines().collect();
let bg_color = Color::rgb(0x34, 0x34, 0x34);
@ -41,7 +44,10 @@ fn main() {
let font_size_default = 2; // Title 4
let mut font_size_i = font_size_default;
#[cfg(feature = "mono")]
let font = Font::new(include_bytes!("../../../res/FreeFont/FreeMono.ttf"), 0).unwrap();
#[cfg(not(feature = "mono"))]
let font = Font::new(include_bytes!("../../../res/FreeFont/FreeSerif.ttf"), 0).unwrap();
let font_scale = font.rustybuzz.units_per_em() as f32;
let mut redraw = true;
@ -54,11 +60,11 @@ fn main() {
let window_lines = (window.height() as i32 + line_height - 1) / line_height;
scroll = cmp::max(0, cmp::min(
lines.len() as i32 - window_lines,
lines.len() as i32 - (window_lines - 1),
scroll
));
let mut line_y = 0;
let mut line_y = line_height;
for line in lines.iter().skip(scroll as usize).take((window_lines + 1) as usize) {
let mut buffer = rustybuzz::UnicodeBuffer::new();
buffer.push_str(line);