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Implement debug view and load system fonts

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This commit is contained in:
Héctor Ramón Jiménez 2019-11-03 04:39:11 +01:00
parent ef056d8489
commit 2c6bfdbc8c
17 changed files with 418 additions and 241 deletions
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4
Cargo.toml
View file

@ -11,6 +11,10 @@ readme = "README.md"
keywords = ["gui", "ui", "graphics", "interface", "widgets"]
categories = ["gui"]
[features]
# Enables a debug view in native platforms (press F12)
debug = ["iced_winit/debug"]
[badges]
maintenance = { status = "actively-developed" }

202
examples/resources/Roboto-LICENSE
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@ -1,202 +0,0 @@
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examples/resources/Roboto-Regular.ttf
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examples/resources/ui.png
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2
native/src/lib.rs
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@ -206,7 +206,6 @@ mod element;
mod event;
mod hasher;
mod layout;
mod metrics;
mod mouse_cursor;
mod node;
mod style;
@ -225,7 +224,6 @@ pub use element::Element;
pub use event::Event;
pub use hasher::Hasher;
pub use layout::Layout;
pub use metrics::Metrics;
pub use mouse_cursor::MouseCursor;
pub use node::Node;
pub use renderer::Renderer;

11
native/src/metrics.rs
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@ -1,11 +0,0 @@
use std::time;
/// A bunch of metrics about an Iced application.
#[derive(Debug, Clone, Copy)]
pub struct Metrics {
pub startup_time: time::Duration,
pub update_time: time::Duration,
pub view_time: time::Duration,
pub renderer_output_time: time::Duration,
pub message_count: usize,
}

6
native/src/renderer/windowed.rs
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@ -1,4 +1,4 @@
use crate::{Metrics, MouseCursor};
use crate::MouseCursor;
use raw_window_handle::HasRawWindowHandle;
@ -7,10 +7,10 @@ pub trait Windowed: super::Renderer + Sized {
fn new() -> Self;
fn draw(
fn draw<T: AsRef<str>>(
&mut self,
output: &Self::Output,
metrics: Option<Metrics>,
overlay: &[T],
target: &mut Self::Target,
) -> MouseCursor;
}

2
src/lib.rs
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@ -5,7 +5,7 @@ mod platform;
pub use platform::*;
pub trait Application {
type Message;
type Message: std::fmt::Debug;
fn update(&mut self, message: Self::Message);

1
wgpu/Cargo.toml
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@ -14,4 +14,5 @@ wgpu_glyph = { version = "0.4", git = "https://github.com/hecrj/wgpu_glyph", rev
raw-window-handle = "0.3"
image = "0.22"
glam = "0.8"
font-kit = "0.4"
log = "0.4"

38
wgpu/src/font.rs Normal file
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@ -0,0 +1,38 @@
pub use font_kit::family_name::FamilyName as Family;
pub struct Source {
raw: font_kit::sources::fontconfig::FontconfigSource,
}
impl Source {
pub fn new() -> Self {
Source {
raw: font_kit::sources::fontconfig::FontconfigSource::new(),
}
}
pub fn load(&self, families: &[Family]) -> Vec<u8> {
let font = self
.raw
.select_best_match(
families,
&font_kit::properties::Properties::default(),
)
.expect("Find font");
match font {
font_kit::handle::Handle::Path { path, .. } => {
use std::io::Read;
let mut buf = Vec::new();
let mut reader = std::fs::File::open(path).expect("Read font");
let _ = reader.read_to_end(&mut buf);
buf
}
font_kit::handle::Handle::Memory { bytes, .. } => {
bytes.as_ref().clone()
}
}
}
}

1
wgpu/src/lib.rs
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@ -1,3 +1,4 @@
mod font;
mod image;
mod primitive;
mod quad;

64
wgpu/src/renderer.rs
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@ -1,6 +1,6 @@
use crate::{quad, Image, Primitive, Quad, Transformation};
use crate::{font, quad, Image, Primitive, Quad, Transformation};
use iced_native::{
renderer::Debugger, renderer::Windowed, Background, Color, Layout, Metrics,
renderer::Debugger, renderer::Windowed, Background, Color, Layout,
MouseCursor, Point, Rectangle, Widget,
};
@ -62,13 +62,16 @@ impl Renderer {
limits: Limits { max_bind_groups: 2 },
});
// TODO: Think about font loading strategy
// Loading system fonts with fallback may be a good idea
let font: &[u8] =
include_bytes!("../../examples/resources/Roboto-Regular.ttf");
// TODO: Font customization
let font_source = font::Source::new();
let sans_serif_font = font_source.load(&[font::Family::SansSerif]);
let mono_font = font_source.load(&[font::Family::Monospace]);
let glyph_brush = GlyphBrushBuilder::using_font_bytes(font)
.build(&mut device, TextureFormat::Bgra8UnormSrgb);
let glyph_brush = GlyphBrushBuilder::using_fonts_bytes(vec![
sans_serif_font,
mono_font,
])
.build(&mut device, TextureFormat::Bgra8UnormSrgb);
let quad_pipeline = quad::Pipeline::new(&mut device);
let image_pipeline = crate::image::Pipeline::new(&mut device);
@ -83,9 +86,10 @@ impl Renderer {
}
}
fn draw(
fn draw<T: AsRef<str>>(
&mut self,
(primitive, mouse_cursor): &(Primitive, MouseCursor),
overlay: &[T],
target: &mut Target,
) -> MouseCursor {
log::debug!("Drawing");
@ -127,6 +131,7 @@ impl Renderer {
));
self.draw_primitive(primitive, &mut layers);
self.draw_overlay(overlay, &mut layers);
for layer in layers {
self.flush(transformation, &layer, &mut encoder, &frame.view);
@ -260,6 +265,41 @@ impl Renderer {
}
}
fn draw_overlay<'a, T: AsRef<str>>(
&mut self,
lines: &'a [T],
layers: &mut Vec<Layer<'a>>,
) {
let first = layers.first().unwrap();
let mut overlay = Layer::new(first.bounds, 0);
let font_id =
wgpu_glyph::FontId(self.glyph_brush.borrow().fonts().len() - 1);
let scale = wgpu_glyph::Scale { x: 20.0, y: 20.0 };
for (i, line) in lines.iter().enumerate() {
overlay.text.push(Section {
text: line.as_ref(),
screen_position: (11.0, 11.0 + 25.0 * i as f32),
color: [0.9, 0.9, 0.9, 1.0],
scale,
font_id,
..Section::default()
});
overlay.text.push(Section {
text: line.as_ref(),
screen_position: (10.0, 10.0 + 25.0 * i as f32),
color: [0.0, 0.0, 0.0, 1.0],
scale,
font_id,
..Section::default()
});
}
layers.push(overlay);
}
fn flush(
&mut self,
transformation: Transformation,
@ -328,13 +368,13 @@ impl Windowed for Renderer {
Self::new()
}
fn draw(
fn draw<T: AsRef<str>>(
&mut self,
output: &Self::Output,
metrics: Option<Metrics>,
overlay: &[T],
target: &mut Target,
) -> MouseCursor {
self.draw(output, target)
self.draw(output, overlay, target)
}
}

3
winit/Cargo.toml
View file

@ -7,6 +7,9 @@ description = "A winit runtime for Iced"
license = "MIT"
repository = "https://github.com/hecrj/iced"
[features]
debug = []
[dependencies]
iced_native = { version = "0.1.0-alpha", path = "../native" }
winit = { version = "0.20.0-alpha3", git = "https://github.com/rust-windowing/winit", rev = "709808eb4e69044705fcb214bcc30556db761405"}

60
winit/src/application.rs
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@ -2,13 +2,13 @@ use crate::{
column, conversion,
input::{keyboard, mouse},
renderer::{Target, Windowed},
Cache, Column, Element, Event, Length, MouseCursor, UserInterface,
Cache, Column, Debug, Element, Event, Length, MouseCursor, UserInterface,
};
pub trait Application {
type Renderer: Windowed + column::Renderer;
type Message;
type Message: std::fmt::Debug;
fn update(&mut self, message: Self::Message);
@ -24,6 +24,9 @@ pub trait Application {
window::WindowBuilder,
};
let mut debug = Debug::new();
debug.startup_started();
let event_loop = EventLoop::new();
// TODO: Ask for window settings and configure this properly
@ -50,16 +53,22 @@ pub trait Application {
&renderer,
);
debug.layout_started();
let user_interface = UserInterface::build(
document(&mut self, size),
document(&mut self, size, &mut debug),
Cache::default(),
&renderer,
);
debug.layout_finished();
debug.draw_started();
let mut primitive = user_interface.draw(&mut renderer);
debug.draw_finished();
let mut cache = Some(user_interface.into_cache());
let mut events = Vec::new();
let mut mouse_cursor = MouseCursor::OutOfBounds;
debug.startup_finished();
window.request_redraw();
@ -70,17 +79,23 @@ pub trait Application {
//
// This will allow us to rebuild it only when a message is
// handled.
debug.layout_started();
let mut user_interface = UserInterface::build(
document(&mut self, size),
document(&mut self, size, &mut debug),
cache.take().unwrap(),
&renderer,
);
debug.layout_finished();
debug.event_processing_started();
let messages =
user_interface.update(&renderer, events.drain(..));
debug.event_processing_finished();
if messages.is_empty() {
debug.draw_started();
primitive = user_interface.draw(&mut renderer);
debug.draw_finished();
cache = Some(user_interface.into_cache());
} else {
@ -91,16 +106,24 @@ pub trait Application {
for message in messages {
log::debug!("Updating");
debug.log_message(&message);
debug.update_started();
self.update(message);
debug.update_finished();
}
debug.layout_started();
let user_interface = UserInterface::build(
document(&mut self, size),
document(&mut self, size, &mut debug),
temp_cache,
&renderer,
);
debug.layout_finished();
debug.draw_started();
primitive = user_interface.draw(&mut renderer);
debug.draw_finished();
cache = Some(user_interface.into_cache());
}
@ -108,6 +131,8 @@ pub trait Application {
window.request_redraw();
}
event::Event::RedrawRequested(_) => {
debug.render_started();
if let Some(new_size) = new_size.take() {
target.resize(new_size.width, new_size.height, &renderer);
@ -115,7 +140,9 @@ pub trait Application {
}
let new_mouse_cursor =
renderer.draw(&primitive, None, &mut target);
renderer.draw(&primitive, &debug.overlay(), &mut target);
debug.render_finished();
if new_mouse_cursor != mouse_cursor {
window.set_cursor_icon(conversion::mouse_cursor(
@ -191,6 +218,14 @@ pub trait Application {
},
..
} => {
match (virtual_keycode, state) {
(
winit::event::VirtualKeyCode::F12,
winit::event::ElementState::Pressed,
) => debug.toggle(),
_ => {}
}
events.push(Event::Keyboard(keyboard::Event::Input {
key_code: conversion::key_code(virtual_keycode),
state: conversion::button_state(state),
@ -229,17 +264,22 @@ impl From<winit::dpi::PhysicalSize> for Size {
}
}
fn document<Application>(
application: &mut Application,
fn document<'a, Application>(
application: &'a mut Application,
size: Size,
) -> Element<Application::Message, Application::Renderer>
debug: &mut Debug,
) -> Element<'a, Application::Message, Application::Renderer>
where
Application: self::Application,
Application::Message: 'static,
{
debug.view_started();
let view = application.view();
debug.view_finished();
Column::new()
.width(Length::Units(size.width))
.height(Length::Units(size.height))
.push(application.view())
.push(view)
.into()
}

206
winit/src/debug/basic.rs Normal file
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@ -0,0 +1,206 @@
use std::collections::VecDeque;
use std::time;
#[derive(Debug)]
pub struct Debug {
is_enabled: bool,
startup_start: time::Instant,
startup_duration: time::Duration,
update_start: time::Instant,
update_durations: TimeBuffer,
view_start: time::Instant,
view_durations: TimeBuffer,
layout_start: time::Instant,
layout_durations: TimeBuffer,
event_start: time::Instant,
event_durations: TimeBuffer,
draw_start: time::Instant,
draw_durations: TimeBuffer,
render_start: time::Instant,
render_durations: TimeBuffer,
message_count: usize,
last_messages: VecDeque<String>,
}
impl Debug {
pub fn new() -> Self {
let now = time::Instant::now();
Self {
is_enabled: false,
startup_start: now,
startup_duration: time::Duration::from_secs(0),
update_start: now,
update_durations: TimeBuffer::new(200),
view_start: now,
view_durations: TimeBuffer::new(200),
layout_start: now,
layout_durations: TimeBuffer::new(200),
event_start: now,
event_durations: TimeBuffer::new(200),
draw_start: now,
draw_durations: TimeBuffer::new(200),
render_start: now,
render_durations: TimeBuffer::new(50),
message_count: 0,
last_messages: VecDeque::new(),
}
}
pub fn toggle(&mut self) {
self.is_enabled = !self.is_enabled;
}
pub fn startup_started(&mut self) {
self.startup_start = time::Instant::now();
}
pub fn startup_finished(&mut self) {
self.startup_duration = time::Instant::now() - self.startup_start;
}
pub fn update_started(&mut self) {
self.update_start = time::Instant::now();
}
pub fn update_finished(&mut self) {
self.update_durations
.push(time::Instant::now() - self.update_start);
}
pub fn view_started(&mut self) {
self.view_start = time::Instant::now();
}
pub fn view_finished(&mut self) {
self.view_durations
.push(time::Instant::now() - self.view_start);
}
pub fn layout_started(&mut self) {
self.layout_start = time::Instant::now();
}
pub fn layout_finished(&mut self) {
self.layout_durations
.push(time::Instant::now() - self.layout_start);
}
pub fn event_processing_started(&mut self) {
self.event_start = time::Instant::now();
}
pub fn event_processing_finished(&mut self) {
self.event_durations
.push(time::Instant::now() - self.event_start);
}
pub fn draw_started(&mut self) {
self.draw_start = time::Instant::now();
}
pub fn draw_finished(&mut self) {
self.draw_durations
.push(time::Instant::now() - self.draw_start);
}
pub fn render_started(&mut self) {
self.render_start = time::Instant::now();
}
pub fn render_finished(&mut self) {
self.render_durations
.push(time::Instant::now() - self.render_start);
}
pub fn log_message<Message: std::fmt::Debug>(&mut self, message: &Message) {
self.last_messages.push_back(format!("{:?}", message));
if self.last_messages.len() > 10 {
let _ = self.last_messages.pop_front();
}
self.message_count += 1;
}
pub fn overlay(&self) -> Vec<String> {
if !self.is_enabled {
return Vec::new();
}
let mut lines = Vec::new();
fn key_value<T: std::fmt::Debug>(key: &str, value: T) -> String {
format!("{: <30} {:?}", key, value)
}
lines.push(key_value("Startup:", self.startup_duration));
lines.push(key_value("Update:", self.update_durations.average()));
lines.push(key_value("View:", self.view_durations.average()));
lines.push(key_value("Layout:", self.layout_durations.average()));
lines.push(key_value(
"Event processing:",
self.event_durations.average(),
));
lines.push(key_value(
"Primitive generation:",
self.draw_durations.average(),
));
lines.push(key_value("Render:", self.render_durations.average()));
lines.push(key_value("Message count:", self.message_count));
lines.push(String::from("Last messages:"));
lines.extend(
self.last_messages.iter().map(|msg| format!(" {}", msg)),
);
lines
}
}
#[derive(Debug)]
struct TimeBuffer {
head: usize,
size: usize,
contents: Vec<time::Duration>,
}
impl TimeBuffer {
fn new(capacity: usize) -> TimeBuffer {
TimeBuffer {
head: 0,
size: 0,
contents: vec![time::Duration::from_secs(0); capacity],
}
}
fn push(&mut self, duration: time::Duration) {
self.head = (self.head + 1) % self.contents.len();
self.contents[self.head] = duration;
self.size = (self.size + 1).min(self.contents.len());
}
fn average(&self) -> time::Duration {
let sum: time::Duration = if self.size == self.contents.len() {
self.contents[..].iter().sum()
} else {
self.contents[..self.size].iter().sum()
};
sum / self.size.max(1) as u32
}
}

48
winit/src/debug/null.rs Normal file
View file

@ -0,0 +1,48 @@
#[derive(Debug)]
pub struct Debug;
impl Debug {
pub fn new() -> Self {
Self
}
pub fn toggle(&mut self) {}
pub fn startup_started(&mut self) {}
pub fn startup_finished(&mut self) {}
pub fn update_started(&mut self) {}
pub fn update_finished(&mut self) {}
pub fn view_started(&mut self) {}
pub fn view_finished(&mut self) {}
pub fn layout_started(&mut self) {}
pub fn layout_finished(&mut self) {}
pub fn event_processing_started(&mut self) {}
pub fn event_processing_finished(&mut self) {}
pub fn draw_started(&mut self) {}
pub fn draw_finished(&mut self) {}
pub fn render_started(&mut self) {}
pub fn render_finished(&mut self) {}
pub fn log_message<Message: std::fmt::Debug>(
&mut self,
_message: &Message,
) {
}
pub fn overlay(&self) -> Vec<String> {
Vec::new()
}
}

11
winit/src/lib.rs
View file

@ -6,3 +6,14 @@ pub mod conversion;
mod application;
pub use application::Application;
// We disable debug capabilities on release builds unless the `debug` feature
// is explicitly enabled.
#[cfg_attr(any(debug_assertions, feature = "debug"), path = "debug/basic.rs")]
#[cfg_attr(
not(any(debug_assertions, feature = "debug")),
path = "debug/null.rs"
)]
mod debug;
use debug::Debug;