plotters-rs / plotters-canvas

Plotters HTML5 Canvas-WASM Backend

plotters-canvas - The HTML5 canvas backend for Plotters

This is a part of plotters project. For more details, please check the following links:

• For high-level intro of Plotters, see: Plotters on crates.io
• Check the main repo at Plotters repo
• For detailed documentation about this crate, check plotters-backend on docs.rs
• You can also visit Plotters Homepage

Testing

This crate needs to be tested in a browser environment. In order to test, you should install wasm-pack first.

cargo install wasm-pack

To run the test case with wasm-pack. You need choose what browser you want to run the test cases. You should also be able to use --chrome or --safari as well.

wasm-pack test --firefox  

Also you should be able to run it headlessly by adding the headless param to the testing command.

wasm-pack test --firefox --headless

plotters-canvas's Issues

Please deploy a new version to include a243d01c508e67/added missing set_line_width calls in HTML5 canvas backend

This commit is very important, because it fixes many line width problems.

non-exhaustive patterns: `RotateAngle(_)` not covered

Compilation fails against the git-master version of plotters-backend. plotters-rs/plotters-backend#2 introduced arbitrary angles for FontTransform, but plotters-cairo has not caught on because its CI is configured to build against the stable version of plotters-backend.

This issue was discovered while working on the plotters-rs/plotters#373 proposal.

plotters-cairo pr-ci-master* $ cd ../plotters-canvas && cargo build
   Compiling plotters-backend v0.3.1 (D:\plotters-backend)
   Compiling wasm-bindgen v0.2.81
   Compiling js-sys v0.3.58
   Compiling web-sys v0.3.58
   Compiling plotters-canvas v0.3.0 (D:\plotters-canvas)
error[E0004]: non-exhaustive patterns: `RotateAngle(_)` not covered
   --> src\canvas.rs:250:28
    |
250 |         let degree = match style.transform() {
    |                            ^^^^^^^^^^^^^^^^^ pattern `RotateAngle(_)` not covered
    |
note: `FontTransform` defined here
   --> D:\plotters-backend\src\text.rs:139:5
    |
129 | / pub enum FontTransform {
130 | |     /// Nothing to transform
131 | |     None,
132 | |     /// Rotating the text 90 degree clockwise
...   |
139 | |     RotateAngle(f32),
    | |     ^^^^^^^^^^^ not covered
140 | | }
    | |_-
    = note: the matched value is of type `FontTransform`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
254 ~             FontTransform::Rotate270 => 270.0,
255 ~             RotateAngle(_) => todo!(),
    |

For more information about this error, try `rustc --explain E0004`.
error: could not compile `plotters-canvas` due to previous error
warning: build failed, waiting for other jobs to finish...

add participants to accept pull requests

this repo, along with plotters-wasm-demo are not compiling due to a reversal on FontTransform

plotters-rs/plotters-wasm-demo#1

@38, or someone with the appropriate access to accept pull requests should look into accepting participants so we can unblock these repos and let them continue to grow with new user submissions. I can help assist if need be.

when compiling, occured E0599 error

Hi.
Anyone encounted this error?