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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use std::sync::Arc;
use std::mem;
use api::{
IdNamespace, FontTemplate, FontKey, FontInstanceKey, FontInstanceOptions,
FontInstancePlatformOptions, ColorF, FontInstanceFlags, units::DevicePoint,
};
use glutin::ContextBuilder;
use glutin::dpi::PhysicalSize;
use glutin::event::{Event, WindowEvent};
use glutin::event_loop::{ControlFlow, EventLoop};
use glutin::window::WindowBuilder;
use rayon::ThreadPoolBuilder;
use wr_glyph_rasterizer::RasterizedGlyph;
use wr_glyph_rasterizer::{
SharedFontResources, BaseFontInstance, GlyphRasterizer, FontInstance, GlyphKey,
SubpixelDirection, profiler::GlyphRasterizeProfiler,
};
#[path = "common/boilerplate.rs"]
mod boilerplate;
struct Profiler;
impl GlyphRasterizeProfiler for Profiler {
fn start_time(&mut self) {}
fn end_time(&mut self) -> f64 {
0.
}
fn set(&mut self, _value: f64) {}
}
fn load_glyphs() -> Vec<RasterizedGlyph> {
let namespace = IdNamespace(0);
let mut fonts = SharedFontResources::new(namespace);
let font_key = FontKey::new(namespace, 0);
let raw_font_data = include_bytes!("../../wrench/reftests/text/FreeSans.ttf");
let font_template = FontTemplate::Raw(Arc::new(raw_font_data.to_vec()), 0);
let shared_font_key = fonts
.font_keys
.add_key(&font_key, &font_template)
.expect("Failed to add font key");
let font_instance_key = FontInstanceKey::new(namespace, 1);
fonts.templates.add_font(shared_font_key, font_template);
assert!(fonts.templates.has_font(&shared_font_key));
// AddFontInstance will only be processed here, not in the resource cache, so it
// is safe to take the options rather than clone them.
let base = BaseFontInstance::new(
font_instance_key,
shared_font_key,
32.,
mem::take(&mut Some(FontInstanceOptions::default())),
mem::take(&mut Some(FontInstancePlatformOptions::default())),
mem::take(&mut Vec::new()),
);
let shared_instance = fonts
.instance_keys
.add_key(base)
.expect("Failed to add font instance key");
fonts.instances.add_font_instance(shared_instance);
let workers = {
let worker = ThreadPoolBuilder::new()
.thread_name(|idx| format!("WRWorker#{}", idx))
.build();
Arc::new(worker.unwrap())
};
let mut glyph_rasterizer = GlyphRasterizer::new(workers, false);
glyph_rasterizer.add_font(
shared_font_key,
fonts
.templates
.get_font(&shared_font_key)
.expect("Could not find FontTemplate"),
);
let mut font = FontInstance::new(
fonts
.instances
.get_font_instance(font_instance_key)
.expect("Could not found BaseFontInstance"),
ColorF::BLACK.into(),
api::FontRenderMode::Alpha,
FontInstanceFlags::SUBPIXEL_POSITION | FontInstanceFlags::FONT_SMOOTHING,
);
glyph_rasterizer.prepare_font(&mut font);
let glyph_keys = [
glyph_rasterizer
.get_glyph_index(shared_font_key, 'A')
.expect("Failed to get glyph index"),
glyph_rasterizer
.get_glyph_index(shared_font_key, 'B')
.expect("Failed to get glyph index"),
glyph_rasterizer
.get_glyph_index(shared_font_key, 'C')
.expect("Failed to get glyph index"),
];
let glyph_keys = glyph_keys.map(|g| {
GlyphKey::new(
g,
DevicePoint::new(100., 100.),
SubpixelDirection::Horizontal,
)
});
glyph_rasterizer.request_glyphs(font, &glyph_keys, |_| true);
let mut glyphs = vec![];
glyph_rasterizer.resolve_glyphs(
|job, _| {
if let Ok(glyph) = job.result {
glyphs.push(glyph);
}
},
&mut Profiler,
);
glyphs
}
fn main() {
let glyphs = load_glyphs();
let el = EventLoop::new();
let wb = WindowBuilder::new()
.with_title("A fantastic window!")
.with_inner_size(PhysicalSize::new(1900. as f64, 1300. as f64));
let windowed_context = ContextBuilder::new()
.with_gl(glutin::GlRequest::GlThenGles {
opengl_version: (3, 2),
opengles_version: (3, 0),
})
.build_windowed(wb, &el)
.unwrap();
let windowed_context = unsafe { windowed_context.make_current().unwrap() };
let gl = boilerplate::load(windowed_context.context(), glyphs);
el.run(move |event, _, control_flow| {
*control_flow = ControlFlow::Wait;
match event {
Event::LoopDestroyed => (),
Event::WindowEvent { event, .. } => match event {
WindowEvent::Resized(physical_size) => windowed_context.resize(physical_size),
WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
_ => (),
},
Event::RedrawRequested(_) => {
let size = windowed_context.window().inner_size();
let scale_factor = windowed_context.window().scale_factor();
gl.draw_frame(
size.width as f32,
size.height as f32,
[0., 0., 0., 1.0],
[1., 1., 1., 1.0],
scale_factor as f32,
);
windowed_context.swap_buffers().unwrap();
}
_ => (),
}
});
}
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