Canvas based zoomable image with good logging.
This commit is contained in:
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a0aae68a97
434
Cargo.lock
generated
434
Cargo.lock
generated
@ -17,12 +17,6 @@ version = "1.1.0"
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@ -220,17 +206,16 @@ dependencies = [
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@ -263,43 +248,19 @@ dependencies = [
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[[package]]
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|
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|
||||
[[package]]
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@ -631,15 +553,6 @@ dependencies = [
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||||
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|
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|
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||||
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||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
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||||
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||||
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||||
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|
||||
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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||||
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@ -727,21 +626,15 @@ dependencies = [
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|
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|
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|
||||
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||||
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|
||||
|
||||
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||||
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|
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|
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|
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|
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|
||||
|
||||
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|
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@ -1009,9 +827,9 @@ dependencies = [
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@ -1019,9 +837,9 @@ dependencies = [
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|
||||
[[package]]
|
||||
name = "wasm-bindgen-macro-support"
|
||||
version = "0.2.73"
|
||||
version = "0.2.84"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d53739ff08c8a68b0fdbcd54c372b8ab800b1449ab3c9d706503bc7dd1621b2c"
|
||||
checksum = "2aff81306fcac3c7515ad4e177f521b5c9a15f2b08f4e32d823066102f35a5f6"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
@ -1032,9 +850,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "wasm-bindgen-shared"
|
||||
version = "0.2.73"
|
||||
version = "0.2.84"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d9a543ae66aa233d14bb765ed9af4a33e81b8b58d1584cf1b47ff8cd0b9e4489"
|
||||
checksum = "0046fef7e28c3804e5e38bfa31ea2a0f73905319b677e57ebe37e49358989b5d"
|
||||
|
||||
[[package]]
|
||||
name = "wasm-bindgen-test"
|
||||
@ -1077,9 +895,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "web-sys"
|
||||
version = "0.3.50"
|
||||
version = "0.3.61"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a905d57e488fec8861446d3393670fb50d27a262344013181c2cdf9fff5481be"
|
||||
checksum = "e33b99f4b23ba3eec1a53ac264e35a755f00e966e0065077d6027c0f575b0b97"
|
||||
dependencies = [
|
||||
"js-sys",
|
||||
"wasm-bindgen",
|
||||
|
||||
12
Cargo.toml
12
Cargo.toml
@ -17,12 +17,22 @@ wasm-bindgen-test = "0.3.18"
|
||||
|
||||
[dependencies]
|
||||
chrono = "0.4.23"
|
||||
console_log = {git = "http://git.z.xinu.tv/wathiede/console_log"}
|
||||
humantime = "2.1.0"
|
||||
seed = "0.8.0"
|
||||
log = "0.4.17"
|
||||
seed = "0.9.2"
|
||||
serde = "1.0.152"
|
||||
thiserror = "1.0.38"
|
||||
wasm-timer = "0.2.5"
|
||||
|
||||
[dependencies.web-sys]
|
||||
version = "0.3.58"
|
||||
features = [
|
||||
"CanvasRenderingContext2d",
|
||||
"HtmlImageElement",
|
||||
"ImageData",
|
||||
]
|
||||
|
||||
[profile.release]
|
||||
lto = true
|
||||
opt-level = 'z'
|
||||
|
||||
@ -21,3 +21,7 @@ html, body, #root {
|
||||
.fresh {
|
||||
color: #4f4;
|
||||
}
|
||||
|
||||
.image {
|
||||
width: 100%;
|
||||
}
|
||||
|
||||
@ -2,6 +2,7 @@
|
||||
<html lang="en">
|
||||
|
||||
<head>
|
||||
<title>Traceviewer</title>
|
||||
<meta charset="utf-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
|
||||
<link rel="modulepreload" href="/pkg/package.js" as="script" type="text/javascript">
|
||||
|
||||
275
src/lib.rs
275
src/lib.rs
@ -3,19 +3,21 @@
|
||||
// but some rules are too "annoying" or are not applicable for your case.)
|
||||
#![allow(clippy::wildcard_imports)]
|
||||
|
||||
use std::{sync::Arc, time::Duration};
|
||||
use std::time::Duration;
|
||||
|
||||
use chrono::{DateTime, Local, NaiveDateTime, TimeZone};
|
||||
use chrono::{Local, NaiveDateTime, TimeZone};
|
||||
use log::Level;
|
||||
use seed::{prelude::*, *};
|
||||
use thiserror::Error;
|
||||
use wasm_timer::{SystemTime, UNIX_EPOCH};
|
||||
use web_sys::{HtmlCanvasElement, HtmlImageElement};
|
||||
|
||||
const ROOT_URL: &'static str = "/www/tracer/";
|
||||
|
||||
#[derive(Clone, Error, Debug)]
|
||||
pub enum AppError {
|
||||
#[error("fetch error")]
|
||||
FetchError(Arc<FetchError>),
|
||||
#[error("fetch error: {0}")]
|
||||
FetchError(String),
|
||||
}
|
||||
|
||||
// ------ ------
|
||||
@ -25,10 +27,15 @@ pub enum AppError {
|
||||
// `init` describes what should happen when your app started.
|
||||
fn init(_: Url, orders: &mut impl Orders<Msg>) -> Model {
|
||||
let timer_handle = orders.stream_with_handle(streams::interval(1000, || Msg::OnCheck));
|
||||
orders.after_next_render(|_| Msg::Rendered);
|
||||
Model {
|
||||
timer_handle,
|
||||
data: None,
|
||||
error: None,
|
||||
image_canvas: ElRef::<HtmlCanvasElement>::default(),
|
||||
image_ref: ElRef::<HtmlImageElement>::default(),
|
||||
zoom: 1.0,
|
||||
offset: [0., 0.],
|
||||
}
|
||||
}
|
||||
|
||||
@ -41,19 +48,26 @@ struct Model {
|
||||
timer_handle: StreamHandle,
|
||||
data: Option<Data>,
|
||||
error: Option<AppError>,
|
||||
image_canvas: ElRef<HtmlCanvasElement>,
|
||||
image_ref: ElRef<HtmlImageElement>,
|
||||
zoom: f64,
|
||||
offset: [f64; 2],
|
||||
}
|
||||
|
||||
// ------ ------
|
||||
// Update
|
||||
// ------ ------
|
||||
|
||||
// (Remove the line below once any of your `Msg` variants doesn't implement `Copy`.)
|
||||
#[derive(Clone)]
|
||||
// `Msg` describes the different events you can modify state with.
|
||||
enum Msg {
|
||||
OnCheck,
|
||||
OnError(AppError),
|
||||
Rendered,
|
||||
Received(Data),
|
||||
Reset,
|
||||
Zoom(f64, [i32; 2]),
|
||||
Move([f64; 2]),
|
||||
}
|
||||
|
||||
// `update` describes how to handle each `Msg`.
|
||||
@ -76,16 +90,57 @@ fn update(msg: Msg, model: &mut Model, orders: &mut impl Orders<Msg>) {
|
||||
|
||||
match response
|
||||
.check_status() // ensure we've got 2xx status
|
||||
.expect("status check failed")
|
||||
{Ok(data)=>
|
||||
match data
|
||||
.json::<Data>()
|
||||
.await
|
||||
{
|
||||
Ok(data) => Msg::Received(data),
|
||||
Err(e) => Msg::OnError(AppError::FetchError(Arc::new(e))),
|
||||
Err(e) => Msg::OnError(AppError::FetchError(format!("{:?}",e))),
|
||||
},
|
||||
Err(e) => Msg::OnError(AppError::FetchError(format!("{:?}",e))),
|
||||
}
|
||||
});
|
||||
}
|
||||
Msg::Received(data) => model.data = Some(data),
|
||||
Msg::Received(data) => {
|
||||
if let Some(d) = &model.data {
|
||||
if d.timestamp != data.timestamp {
|
||||
model.data = Some(data);
|
||||
}
|
||||
} else {
|
||||
model.data = Some(data);
|
||||
}
|
||||
}
|
||||
Msg::Rendered => {
|
||||
draw(
|
||||
&model.image_canvas,
|
||||
&model.image_ref,
|
||||
model.zoom,
|
||||
model.offset,
|
||||
);
|
||||
// We want to call `.skip` to prevent infinite loop.
|
||||
// (However infinite loops are useful for animations.)
|
||||
// TODO(wathiede): can this be done less often?
|
||||
orders.after_next_render(|_| Msg::Rendered).skip();
|
||||
}
|
||||
Msg::Reset => {
|
||||
model.zoom = 1.;
|
||||
model.offset = [0., 0.];
|
||||
}
|
||||
Msg::Zoom(scale, at) => {
|
||||
let old_zoom = model.zoom;
|
||||
model.zoom += scale;
|
||||
if model.zoom < 0.1 {
|
||||
model.zoom = 0.1;
|
||||
}
|
||||
let z_rat = model.zoom / old_zoom;
|
||||
let at = [at[0] as f64, at[1] as f64];
|
||||
model.offset = [
|
||||
at[0] - (z_rat) * (at[0] - model.offset[0]),
|
||||
at[1] - (z_rat) * (at[1] - model.offset[1]),
|
||||
];
|
||||
}
|
||||
Msg::Move(delta) => model.offset = [model.offset[0] + delta[0], model.offset[1] + delta[1]],
|
||||
}
|
||||
}
|
||||
use serde::{Deserialize, Serialize};
|
||||
@ -173,34 +228,215 @@ fn view_metadata_table(data: &Data) -> Node<Msg> {
|
||||
]
|
||||
}
|
||||
|
||||
fn view_image(im: &ImageMetadata) -> Node<Msg> {
|
||||
fn draw(
|
||||
canvas: &ElRef<HtmlCanvasElement>,
|
||||
image: &ElRef<HtmlImageElement>,
|
||||
zoom: f64,
|
||||
offset: [f64; 2],
|
||||
) {
|
||||
let (canvas, image) = match (canvas.get(), image.get()) {
|
||||
(Some(canvas), Some(image)) => (canvas, image),
|
||||
_ => {
|
||||
return;
|
||||
}
|
||||
};
|
||||
|
||||
#[derive(Serialize)]
|
||||
struct ContextOptions {
|
||||
#[serde(rename = "willReadFrequently")]
|
||||
will_read_frequently: bool,
|
||||
}
|
||||
let ctx = canvas
|
||||
.get_context_with_context_options(
|
||||
"2d",
|
||||
&wasm_bindgen::JsValue::from_serde(&ContextOptions {
|
||||
will_read_frequently: true,
|
||||
})
|
||||
.unwrap(),
|
||||
)
|
||||
.expect("Problem getting canvas context")
|
||||
.expect("The canvas context is empty")
|
||||
.dyn_into::<web_sys::CanvasRenderingContext2d>()
|
||||
.expect("Problem casting as web_sys::CanvasRenderingContext2d");
|
||||
|
||||
let width = canvas.width();
|
||||
let height = canvas.height();
|
||||
let dw = width as f64;
|
||||
let dh = height as f64;
|
||||
// clear canvas
|
||||
ctx.begin_path();
|
||||
ctx.clear_rect(0., 0., dw, dh);
|
||||
let sx = 0.;
|
||||
let sy = 0.;
|
||||
let sw = image.width() as f64;
|
||||
let sh = image.height() as f64;
|
||||
let dx = offset[0];
|
||||
let dy = offset[1];
|
||||
let dw = dw * zoom;
|
||||
let dh = dh * zoom;
|
||||
ctx.draw_image_with_html_image_element_and_sw_and_sh_and_dx_and_dy_and_dw_and_dh(
|
||||
&image, sx, sy, sw, sh, dx, dy, dw, dh,
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
//let color = ctx.get_image_data(10.0, 10.0, 11.0, 11.0).unwrap().data();
|
||||
}
|
||||
fn view_image(
|
||||
im: &ImageMetadata,
|
||||
image_canvas: &ElRef<HtmlCanvasElement>,
|
||||
image_ref: &ElRef<HtmlImageElement>,
|
||||
) -> Node<Msg> {
|
||||
let url = format!("{ROOT_URL}/{}", im.image);
|
||||
let attrs = if let Some(canvas) = image_canvas.get() {
|
||||
Some(attrs![
|
||||
At::Width => px(canvas.client_width()),
|
||||
At::Height => px(canvas.client_height()),
|
||||
])
|
||||
} else {
|
||||
None
|
||||
};
|
||||
div![
|
||||
a![attrs! {At::Href => url}, p![&im.name]],
|
||||
a![attrs! {At::Href => url}, img![attrs! { At::Src => url}]]
|
||||
C!["image"],
|
||||
canvas![
|
||||
el_ref(image_canvas),
|
||||
C!["image"],
|
||||
attrs,
|
||||
attrs! {
|
||||
At::Draggable=>AtValue::None,
|
||||
},
|
||||
mouse_ev(Ev::MouseMove, |e| {
|
||||
if e.buttons() != 0 {
|
||||
Msg::Move([e.movement_x() as f64, e.movement_y() as f64])
|
||||
} else {
|
||||
Msg::Move([0., 0.])
|
||||
}
|
||||
}),
|
||||
wheel_ev(Ev::Wheel, |event| {
|
||||
let delta_y = event.delta_y();
|
||||
(delta_y != 0.0).then(|| {
|
||||
event.prevent_default();
|
||||
let at = [event.offset_x(), event.offset_y()];
|
||||
let delta_y = -delta_y / 1000.;
|
||||
Msg::Zoom(delta_y, at)
|
||||
})
|
||||
}),
|
||||
],
|
||||
img![
|
||||
el_ref(image_ref),
|
||||
attrs! {
|
||||
At::Src => url
|
||||
},
|
||||
style! {
|
||||
St::Display => "none",
|
||||
}
|
||||
]
|
||||
]
|
||||
}
|
||||
|
||||
fn view_data(data: &Data) -> Node<Msg> {
|
||||
fn view_data(
|
||||
data: &Data,
|
||||
image_canvas: &ElRef<HtmlCanvasElement>,
|
||||
image_ref: &ElRef<HtmlImageElement>,
|
||||
zoom: f64,
|
||||
offset: [f64; 2],
|
||||
) -> Node<Msg> {
|
||||
let mut width = 128;
|
||||
let mut height = 128;
|
||||
if let Some(c) = image_canvas.get() {
|
||||
width = c.width() as i32;
|
||||
height = c.height() as i32;
|
||||
}
|
||||
let zoom_in = 0.1;
|
||||
let zoom_out = -0.1;
|
||||
div![
|
||||
C!["columns"],
|
||||
div![C!["column", "is-narrow"], view_metadata_table(data),],
|
||||
div![
|
||||
C!["column", "is-narrow"],
|
||||
view_metadata_table(data),
|
||||
p![format!(
|
||||
"Z: {:.4} Off: {:.2}x{:.2}",
|
||||
zoom, offset[0], offset[1]
|
||||
)],
|
||||
p![format!("Mid {}x{}", width / 2, height / 2)],
|
||||
p![format!("Max {}x{}", width, height)],
|
||||
button![ev(Ev::Click, |_| Msg::Reset), "Reset",],
|
||||
div![
|
||||
button![
|
||||
ev(Ev::Click, move |_| Msg::Zoom(zoom_in, [0, 0])),
|
||||
"+ @ 0x0",
|
||||
],
|
||||
button![
|
||||
ev(Ev::Click, move |_| Msg::Zoom(zoom_out, [0, 0])),
|
||||
"- @ 0x0",
|
||||
],
|
||||
],
|
||||
div![
|
||||
button![
|
||||
ev(Ev::Click, move |_| Msg::Zoom(
|
||||
zoom_in,
|
||||
[width / 2, height / 2]
|
||||
)),
|
||||
"+ @ mid",
|
||||
],
|
||||
button![
|
||||
ev(Ev::Click, move |_| Msg::Zoom(
|
||||
zoom_out,
|
||||
[width / 2, height / 2]
|
||||
)),
|
||||
"- @ mid",
|
||||
],
|
||||
],
|
||||
div![
|
||||
button![
|
||||
ev(Ev::Click, move |_| Msg::Zoom(zoom_in, [width, height])),
|
||||
"+ @ max",
|
||||
],
|
||||
button![
|
||||
ev(Ev::Click, move |_| Msg::Zoom(zoom_out, [width, height])),
|
||||
"- @ max",
|
||||
],
|
||||
],
|
||||
],
|
||||
div![
|
||||
C!["column"],
|
||||
data.image_metadata.iter().map(|im| view_image(im))
|
||||
div![
|
||||
C!["tabs"],
|
||||
ul![data.image_metadata.iter().map(|im| li![a![&im.name]])]
|
||||
],
|
||||
data.image_metadata
|
||||
.iter()
|
||||
.nth(0)
|
||||
.map(|im| view_image(im, image_canvas, image_ref))
|
||||
]
|
||||
]
|
||||
}
|
||||
|
||||
// `view` describes what to display.
|
||||
fn view(model: &Model) -> Node<Msg> {
|
||||
let error: Option<Node<Msg>> = if let Some(error) = &model.error {
|
||||
Some(div![C!["error"], "Errors:", pre![error.to_string()]])
|
||||
} else {
|
||||
None
|
||||
};
|
||||
div![
|
||||
match &model.data {
|
||||
Some(data) => view_data(data),
|
||||
Some(data) => view_data(
|
||||
data,
|
||||
&model.image_canvas,
|
||||
&model.image_ref,
|
||||
model.zoom,
|
||||
model.offset
|
||||
),
|
||||
None => h1!["Loading...."],
|
||||
},
|
||||
error,
|
||||
div![
|
||||
style! {
|
||||
St::Display => "none",
|
||||
},
|
||||
"Data",
|
||||
pre![format!("{:#?}", model.data)],
|
||||
pre![format!("{:#?}", model.data)]
|
||||
],
|
||||
]
|
||||
}
|
||||
|
||||
@ -211,6 +447,13 @@ fn view(model: &Model) -> Node<Msg> {
|
||||
// (This function is invoked by `init` function in `index.html`.)
|
||||
#[wasm_bindgen(start)]
|
||||
pub fn start() {
|
||||
// This provides better error messages in debug mode.
|
||||
// It's disabled in release mode so it doesn't bloat up the file size.
|
||||
#[cfg(debug_assertions)]
|
||||
console_error_panic_hook::set_once();
|
||||
|
||||
let lvl = Level::Info;
|
||||
console_log::init_with_level(lvl).expect("failed to initialize console logging");
|
||||
// Mount the `app` to the element with the `id` "app".
|
||||
App::start("app", init, update, view);
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user