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lets generate some images

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This commit is contained in:
Michal Vanko
2024-09-04 15:43:47 +02:00
parent f1b3400e63
commit 7734c03ba5
5 changed files with 57 additions and 48 deletions
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27
axum_server/src/picture_generator/export_format.rs Normal file
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@@ -0,0 +1,27 @@
#[derive(Debug, PartialEq)]
pub enum ExportFormat {
JPG,
AVIF,
SVG,
PNG,
}
impl ExportFormat {
pub fn get_extension(&self) -> &str {
match self {
ExportFormat::JPG => "jpg",
ExportFormat::AVIF => "avif",
ExportFormat::SVG => "svg",
ExportFormat::PNG => "png",
}
}
pub fn get_type(&self) -> &str {
match self {
ExportFormat::JPG => "image/jpeg",
ExportFormat::AVIF => "image/avif",
ExportFormat::SVG => "image/svg+xml",
ExportFormat::PNG => "image/png",
}
}
}

1
axum_server/src/picture_generator/mod.rs
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@@ -21,4 +21,5 @@ It can be used from the rust code
It should be used from the templates as well
*/
pub mod export_format;
pub mod picture_markup_generator;

63
axum_server/src/picture_generator/picture_markup_generator.rs
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@@ -1,41 +1,16 @@
use std::{
cmp::Ordering,
path::{Path, PathBuf},
str::FromStr,
str::FromStr as _,
};
use axum::handler::HandlerWithoutStateExt;
use anyhow::Context;
use image::{GenericImageView, ImageReader};
use super::export_format::ExportFormat;
pub const PIXEL_DENSITIES: [f32; 5] = [1., 1.5, 2., 3., 4.];
#[derive(Debug, PartialEq)]
pub enum ExportFormat {
JPG,
AVIF,
SVG,
PNG,
}
impl ExportFormat {
pub fn get_extension(&self) -> &str {
match self {
ExportFormat::JPG => "jpg",
ExportFormat::AVIF => "avif",
ExportFormat::SVG => "svg",
ExportFormat::PNG => "png",
}
}
pub fn get_type(&self) -> &str {
match self {
ExportFormat::JPG => "image/jpeg",
ExportFormat::AVIF => "image/avif",
ExportFormat::SVG => "image/svg+xml",
ExportFormat::PNG => "image/png",
}
}
}
pub fn generate_picture_markup(
orig_img_path: &str,
width: u32,
@@ -44,7 +19,13 @@ pub fn generate_picture_markup(
) -> Result<String, anyhow::Error> {
let exported_formats = get_export_formats(orig_img_path);
let path_to_generated = get_generated_file_name(orig_img_path);
let orig_img = ImageReader::open(orig_img_path)?.decode()?;
// TODO This should get removed when we move the project structure #move
let dev_only_img_path = Path::new("../static/").join(orig_img_path.strip_prefix("/").unwrap());
let orig_img = ImageReader::open(&dev_only_img_path)
.with_context(|| format!("Failed to read instrs from {:?}", &dev_only_img_path))?
.decode()?;
let orig_img_dimensions = orig_img.dimensions();
let resolutions = get_resolutions(orig_img_dimensions, width, height);
@@ -221,20 +202,20 @@ fn get_generated_file_name(orig_img_path: &str) -> PathBuf {
let file_name = path
.file_stem()
.expect("There should be a name for every img");
let result = Path::new("./generated_images/")
.join(parent)
let result = Path::new("/generated_images/")
.join(parent.strip_prefix("/").unwrap())
.join(file_name);
result
}
#[test]
fn test_get_generated_paths() {
let orig_img_path = "./images/uploads/img_name.jpg";
let orig_img_path = "/images/uploads/img_name.jpg";
assert_eq!(
get_generated_file_name(orig_img_path)
.to_str()
.unwrap_or(""),
"./generated_images/images/uploads/img_name"
"/generated_images/images/uploads/img_name"
);
}
@@ -271,13 +252,13 @@ fn get_export_formats(orig_img_path: &str) -> Vec<ExportFormat> {
#[test]
fn test_get_export_formats() {
assert_eq!(
get_export_formats("./images/uploads/img_name.jpg"),
get_export_formats("/images/uploads/img_name.jpg"),
vec![ExportFormat::AVIF, ExportFormat::JPG]
)
}
#[test]
fn test_generate_srcset() {
let orig_img_path = PathBuf::from_str("./generated_images/images/uploads/img_name").unwrap();
let orig_img_path = PathBuf::from_str("/generated_images/images/uploads/img_name").unwrap();
let export_format = ExportFormat::AVIF;
let resolutions = vec![
(320, 200, 1.),
@@ -286,7 +267,7 @@ fn test_generate_srcset() {
(960, 600, 3.),
(1200, 750, 4.),
];
let result = "./generated_images/images/uploads/img_name_320x200.avif 1x, ./generated_images/images/uploads/img_name_480x300.avif 1.5x, ./generated_images/images/uploads/img_name_640x400.avif 2x, ./generated_images/images/uploads/img_name_960x600.avif 3x, ./generated_images/images/uploads/img_name_1200x750.avif 4x";
let result = "/generated_images/images/uploads/img_name_320x200.avif 1x, /generated_images/images/uploads/img_name_480x300.avif 1.5x, /generated_images/images/uploads/img_name_640x400.avif 2x, /generated_images/images/uploads/img_name_960x600.avif 3x, /generated_images/images/uploads/img_name_1200x750.avif 4x";
assert_eq!(
generate_srcset(&orig_img_path, &export_format, &resolutions),
result
@@ -297,18 +278,18 @@ fn test_generate_srcset() {
fn test_generate_picture_markup() {
let width = 300;
let height = 200;
let orig_img_path = "../static/images/uploads/2020-03-23_20-24-06_393.jpg";
let orig_img_path = "/images/uploads/2020-03-23_20-24-06_393.jpg";
let result = r#"<picture>
<source
srcset="./generated_images/static/images/uploads/2020-03-23_20-24-06_393_300x200.avif 1x, ./generated_images/static/images/uploads/2020-03-23_20-24-06_393_450x300.avif 1.5x, ./generated_images/static/images/uploads/2020-03-23_20-24-06_393_600x400.avif 2x, ./generated_images/static/images/uploads/2020-03-23_20-24-06_393_900x600.avif 3x, ./generated_images/static/images/uploads/2020-03-23_20-24-06_393_1200x800.avif 4x"
srcset="/generated_images/images/uploads/2020-03-23_20-24-06_393_300x200.avif 1x, /generated_images/images/uploads/2020-03-23_20-24-06_393_450x300.avif 1.5x, /generated_images/images/uploads/2020-03-23_20-24-06_393_600x400.avif 2x, /generated_images/images/uploads/2020-03-23_20-24-06_393_900x600.avif 3x, /generated_images/images/uploads/2020-03-23_20-24-06_393_1200x800.avif 4x"
type="image/avif"
>
<source
srcset="./generated_images/static/images/uploads/2020-03-23_20-24-06_393_300x200.jpg 1x, ./generated_images/static/images/uploads/2020-03-23_20-24-06_393_450x300.jpg 1.5x, ./generated_images/static/images/uploads/2020-03-23_20-24-06_393_600x400.jpg 2x, ./generated_images/static/images/uploads/2020-03-23_20-24-06_393_900x600.jpg 3x, ./generated_images/static/images/uploads/2020-03-23_20-24-06_393_1200x800.jpg 4x"
srcset="/generated_images/images/uploads/2020-03-23_20-24-06_393_300x200.jpg 1x, /generated_images/images/uploads/2020-03-23_20-24-06_393_450x300.jpg 1.5x, /generated_images/images/uploads/2020-03-23_20-24-06_393_600x400.jpg 2x, /generated_images/images/uploads/2020-03-23_20-24-06_393_900x600.jpg 3x, /generated_images/images/uploads/2020-03-23_20-24-06_393_1200x800.jpg 4x"
type="image/jpeg"
>
<img
src="./generated_images/static/images/uploads/2020-03-23_20-24-06_393_300x200.jpg"
src="/generated_images/images/uploads/2020-03-23_20-24-06_393_300x200.jpg"
width="300"
height="200"
alt="Testing image alt"

2
axum_server/styles/output.css
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@@ -1,5 +1,5 @@
/*
! tailwindcss v3.4.9 | MIT License | https://tailwindcss.com
! tailwindcss v3.4.10 | MIT License | https://tailwindcss.com
*/
/*

12
axum_server/templates/components/blog_post_preview.html
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@@ -1,11 +1,11 @@
<article class="grid grid-cols-[1fr_2fr] grid-flow-col gap-4">
<aside class="row-span-3">
<!-- TODO <figure> -->
<!-- TODO Thumbnail -->
<!-- <svg aria-hidden="true" class="h-12 w-12 fill-blue-950"> -->
<!-- <use xlink:href="/svg/icons-sprite.svg#mail" /> -->
<!-- </svg> -->
<figure>
{% match post.metadata.thumbnail %}
{% when Some with (orig_path) %}
{{ crate::picture_generator::picture_markup_generator::generate_picture_markup(orig_path, 180, 240, "Article thumbnail").unwrap()|safe }}
{% when None %}
<div> TODO default obrazok </div>
{% endmatch %}
</aside>
<header>
<h3 class="text-lg font-bold mb-1">{{post.metadata.title}}</h3>