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#	CHANGELOG.md
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1
CHANGELOG.md
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@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
### New Functions 🚀
- `use_device_pixel_ratio` (thanks to @mondeja)
- `use_element_bounding`
## [0.9.0] - 2023-12-06

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docs/book/src/SUMMARY.md
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@ -46,6 +46,7 @@
# Sensors
- [on_click_outside](sensors/on_click_outside.md)
- [use_device_pixel_ratio](sensors/use_device_pixel_ratio.md)
- [use_element_hover](sensors/use_element_hover.md)
- [use_geolocation](sensors/use_geolocation.md)
- [use_idle](sensors/use_idle.md)

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docs/book/src/sensors/use_device_pixel_ratio.md Normal file
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@ -0,0 +1,3 @@
# use_device_pixel_ratio
<!-- cmdrun python3 ../extract_doc_comment.py use_device_pixel_ratio -->

1
examples/Cargo.toml
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@ -13,6 +13,7 @@ members = [
"use_css_var",
"use_cycle_list",
"use_debounce_fn",
"use_device_pixel_ratio",
"use_display_media",
"use_document_visibility",
"use_draggable",

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examples/use_device_pixel_ratio/Cargo.toml Normal file
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@ -0,0 +1,16 @@
[package]
name = "use_device_pixel_ratio"
version = "0.1.0"
edition = "2021"
[dependencies]
leptos = { version = "0.5", features = ["nightly", "csr"] }
console_error_panic_hook = "0.1"
console_log = "1"
log = "0.4"
leptos-use = { path = "../..", features = ["docs"] }
web-sys = "0.3"
[dev-dependencies]
wasm-bindgen = "0.2"
wasm-bindgen-test = "0.3.0"

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examples/use_device_pixel_ratio/README.md Normal file
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@ -0,0 +1,23 @@
A simple example for `use_device_pixel_ratio`.
If you don't have it installed already, install [Trunk](https://trunkrs.dev/) and [Tailwind](https://tailwindcss.com/docs/installation)
as well as the nightly toolchain for Rust and the wasm32-unknown-unknown target:
```bash
cargo install trunk
npm install -D tailwindcss @tailwindcss/forms
rustup toolchain install nightly
rustup target add wasm32-unknown-unknown
```
Then, open two terminals. In the first one, run:
```
npx tailwindcss -i ./input.css -o ./style/output.css --watch
```
In the second one, run:
```bash
trunk serve --open
```

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examples/use_device_pixel_ratio/Trunk.toml Normal file
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@ -0,0 +1,2 @@
[build]
public_url = "/demo/"

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examples/use_device_pixel_ratio/index.html Normal file
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@ -0,0 +1,7 @@
<!DOCTYPE html>
<html>
<head>
<link data-trunk rel="css" href="style/output.css">
</head>
<body></body>
</html>

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examples/use_device_pixel_ratio/input.css Normal file
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@ -0,0 +1,3 @@
@tailwind base;
@tailwind components;
@tailwind utilities;

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examples/use_device_pixel_ratio/rust-toolchain.toml Normal file
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@ -0,0 +1,2 @@
[toolchain]
channel = "nightly"

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examples/use_device_pixel_ratio/src/main.rs Normal file
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@ -0,0 +1,24 @@
use leptos::*;
use leptos_use::docs::demo_or_body;
use leptos_use::use_device_pixel_ratio;
#[component]
fn Demo() -> impl IntoView {
let pixel_ratio = use_device_pixel_ratio();
view! {
<pre>{move || format!("pixelRatio: {}", pixel_ratio())}</pre>
<p>
"Zoom in and out (or move the window to a screen with a different scaling factor) to see the value changes."
</p>
}
}
fn main() {
_ = console_log::init_with_level(log::Level::Debug);
console_error_panic_hook::set_once();
mount_to(demo_or_body(), || {
view! { <Demo/> }
})
}

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examples/use_device_pixel_ratio/style/output.css Normal file
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@ -0,0 +1,289 @@
[type='text'],[type='email'],[type='url'],[type='password'],[type='number'],[type='date'],[type='datetime-local'],[type='month'],[type='search'],[type='tel'],[type='time'],[type='week'],[multiple],textarea,select {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background-color: #fff;
border-color: #6b7280;
border-width: 1px;
border-radius: 0px;
padding-top: 0.5rem;
padding-right: 0.75rem;
padding-bottom: 0.5rem;
padding-left: 0.75rem;
font-size: 1rem;
line-height: 1.5rem;
--tw-shadow: 0 0 #0000;
}
[type='text']:focus, [type='email']:focus, [type='url']:focus, [type='password']:focus, [type='number']:focus, [type='date']:focus, [type='datetime-local']:focus, [type='month']:focus, [type='search']:focus, [type='tel']:focus, [type='time']:focus, [type='week']:focus, [multiple]:focus, textarea:focus, select:focus {
outline: 2px solid transparent;
outline-offset: 2px;
--tw-ring-inset: var(--tw-empty,/*!*/ /*!*/);
--tw-ring-offset-width: 0px;
--tw-ring-offset-color: #fff;
--tw-ring-color: #2563eb;
--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color);
box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
border-color: #2563eb;
}
input::-moz-placeholder, textarea::-moz-placeholder {
color: #6b7280;
opacity: 1;
}
input::placeholder,textarea::placeholder {
color: #6b7280;
opacity: 1;
}
::-webkit-datetime-edit-fields-wrapper {
padding: 0;
}
::-webkit-date-and-time-value {
min-height: 1.5em;
}
::-webkit-datetime-edit,::-webkit-datetime-edit-year-field,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute-field,::-webkit-datetime-edit-second-field,::-webkit-datetime-edit-millisecond-field,::-webkit-datetime-edit-meridiem-field {
padding-top: 0;
padding-bottom: 0;
}
select {
background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
background-position: right 0.5rem center;
background-repeat: no-repeat;
background-size: 1.5em 1.5em;
padding-right: 2.5rem;
-webkit-print-color-adjust: exact;
print-color-adjust: exact;
}
[multiple] {
background-image: initial;
background-position: initial;
background-repeat: unset;
background-size: initial;
padding-right: 0.75rem;
-webkit-print-color-adjust: unset;
print-color-adjust: unset;
}
[type='checkbox'],[type='radio'] {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
padding: 0;
-webkit-print-color-adjust: exact;
print-color-adjust: exact;
display: inline-block;
vertical-align: middle;
background-origin: border-box;
-webkit-user-select: none;
-moz-user-select: none;
user-select: none;
flex-shrink: 0;
height: 1rem;
width: 1rem;
color: #2563eb;
background-color: #fff;
border-color: #6b7280;
border-width: 1px;
--tw-shadow: 0 0 #0000;
}
[type='checkbox'] {
border-radius: 0px;
}
[type='radio'] {
border-radius: 100%;
}
[type='checkbox']:focus,[type='radio']:focus {
outline: 2px solid transparent;
outline-offset: 2px;
--tw-ring-inset: var(--tw-empty,/*!*/ /*!*/);
--tw-ring-offset-width: 2px;
--tw-ring-offset-color: #fff;
--tw-ring-color: #2563eb;
--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);
box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
}
[type='checkbox']:checked,[type='radio']:checked {
border-color: transparent;
background-color: currentColor;
background-size: 100% 100%;
background-position: center;
background-repeat: no-repeat;
}
[type='checkbox']:checked {
background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3e%3c/svg%3e");
}
[type='radio']:checked {
background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3ccircle cx='8' cy='8' r='3'/%3e%3c/svg%3e");
}
[type='checkbox']:checked:hover,[type='checkbox']:checked:focus,[type='radio']:checked:hover,[type='radio']:checked:focus {
border-color: transparent;
background-color: currentColor;
}
[type='checkbox']:indeterminate {
background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 16 16'%3e%3cpath stroke='white' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M4 8h8'/%3e%3c/svg%3e");
border-color: transparent;
background-color: currentColor;
background-size: 100% 100%;
background-position: center;
background-repeat: no-repeat;
}
[type='checkbox']:indeterminate:hover,[type='checkbox']:indeterminate:focus {
border-color: transparent;
background-color: currentColor;
}
[type='file'] {
background: unset;
border-color: inherit;
border-width: 0;
border-radius: 0;
padding: 0;
font-size: unset;
line-height: inherit;
}
[type='file']:focus {
outline: 1px solid ButtonText;
outline: 1px auto -webkit-focus-ring-color;
}
*, ::before, ::after {
--tw-border-spacing-x: 0;
--tw-border-spacing-y: 0;
--tw-translate-x: 0;
--tw-translate-y: 0;
--tw-rotate: 0;
--tw-skew-x: 0;
--tw-skew-y: 0;
--tw-scale-x: 1;
--tw-scale-y: 1;
--tw-pan-x: ;
--tw-pan-y: ;
--tw-pinch-zoom: ;
--tw-scroll-snap-strictness: proximity;
--tw-gradient-from-position: ;
--tw-gradient-via-position: ;
--tw-gradient-to-position: ;
--tw-ordinal: ;
--tw-slashed-zero: ;
--tw-numeric-figure: ;
--tw-numeric-spacing: ;
--tw-numeric-fraction: ;
--tw-ring-inset: ;
--tw-ring-offset-width: 0px;
--tw-ring-offset-color: #fff;
--tw-ring-color: rgb(59 130 246 / 0.5);
--tw-ring-offset-shadow: 0 0 #0000;
--tw-ring-shadow: 0 0 #0000;
--tw-shadow: 0 0 #0000;
--tw-shadow-colored: 0 0 #0000;
--tw-blur: ;
--tw-brightness: ;
--tw-contrast: ;
--tw-grayscale: ;
--tw-hue-rotate: ;
--tw-invert: ;
--tw-saturate: ;
--tw-sepia: ;
--tw-drop-shadow: ;
--tw-backdrop-blur: ;
--tw-backdrop-brightness: ;
--tw-backdrop-contrast: ;
--tw-backdrop-grayscale: ;
--tw-backdrop-hue-rotate: ;
--tw-backdrop-invert: ;
--tw-backdrop-opacity: ;
--tw-backdrop-saturate: ;
--tw-backdrop-sepia: ;
}
::backdrop {
--tw-border-spacing-x: 0;
--tw-border-spacing-y: 0;
--tw-translate-x: 0;
--tw-translate-y: 0;
--tw-rotate: 0;
--tw-skew-x: 0;
--tw-skew-y: 0;
--tw-scale-x: 1;
--tw-scale-y: 1;
--tw-pan-x: ;
--tw-pan-y: ;
--tw-pinch-zoom: ;
--tw-scroll-snap-strictness: proximity;
--tw-gradient-from-position: ;
--tw-gradient-via-position: ;
--tw-gradient-to-position: ;
--tw-ordinal: ;
--tw-slashed-zero: ;
--tw-numeric-figure: ;
--tw-numeric-spacing: ;
--tw-numeric-fraction: ;
--tw-ring-inset: ;
--tw-ring-offset-width: 0px;
--tw-ring-offset-color: #fff;
--tw-ring-color: rgb(59 130 246 / 0.5);
--tw-ring-offset-shadow: 0 0 #0000;
--tw-ring-shadow: 0 0 #0000;
--tw-shadow: 0 0 #0000;
--tw-shadow-colored: 0 0 #0000;
--tw-blur: ;
--tw-brightness: ;
--tw-contrast: ;
--tw-grayscale: ;
--tw-hue-rotate: ;
--tw-invert: ;
--tw-saturate: ;
--tw-sepia: ;
--tw-drop-shadow: ;
--tw-backdrop-blur: ;
--tw-backdrop-brightness: ;
--tw-backdrop-contrast: ;
--tw-backdrop-grayscale: ;
--tw-backdrop-hue-rotate: ;
--tw-backdrop-invert: ;
--tw-backdrop-opacity: ;
--tw-backdrop-saturate: ;
--tw-backdrop-sepia: ;
}
.block {
display: block;
}
.text-\[--brand-color\] {
color: var(--brand-color);
}
.text-green-600 {
--tw-text-opacity: 1;
color: rgb(22 163 74 / var(--tw-text-opacity));
}
.opacity-75 {
opacity: 0.75;
}
@media (prefers-color-scheme: dark) {
.dark\:text-green-500 {
--tw-text-opacity: 1;
color: rgb(34 197 94 / var(--tw-text-opacity));
}
}

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examples/use_device_pixel_ratio/tailwind.config.js Normal file
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@ -0,0 +1,15 @@
/** @type {import('tailwindcss').Config} */
module.exports = {
content: {
files: ["*.html", "./src/**/*.rs", "../../src/docs/**/*.rs"],
},
theme: {
extend: {},
},
corePlugins: {
preflight: false,
},
plugins: [
require('@tailwindcss/forms'),
],
}

2
src/lib.rs
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@ -22,6 +22,7 @@ mod use_color_mode;
mod use_css_var;
mod use_cycle_list;
mod use_debounce_fn;
mod use_device_pixel_ratio;
mod use_display_media;
mod use_document;
mod use_document_visibility;
@ -78,6 +79,7 @@ pub use use_color_mode::*;
pub use use_css_var::*;
pub use use_cycle_list::*;
pub use use_debounce_fn::*;
pub use use_device_pixel_ratio::*;
pub use use_display_media::*;
pub use use_document::*;
pub use use_document_visibility::*;

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src/use_device_pixel_ratio.rs Normal file
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@ -0,0 +1,58 @@
use crate::{use_event_listener_with_options, UseEventListenerOptions};
use cfg_if::cfg_if;
use leptos::{*, ev::change};
/// Reactive [`window.devicePixelRatio`](https://developer.mozilla.org/en-US/docs/Web/API/Window/devicePixelRatio)
///
/// > NOTE: there is no event listener for `window.devicePixelRatio` change.
/// > So this function uses the same mechanism as described in
/// > [this example](https://developer.mozilla.org/en-US/docs/Web/API/Window/devicePixelRatio#monitoring_screen_resolution_or_zoom_level_changes).
///
/// ## Demo
///
/// [Link to Demo](https://github.com/Synphonyte/leptos-use/tree/main/examples/use_device_pixel_ratio)
///
/// ## Usage
///
/// ```
/// # use leptos::*;
/// # use leptos_use::use_device_pixel_ratio;
/// #
/// # #[component]
/// # fn Demo() -> impl IntoView {
/// let pixel_ratio = use_device_pixel_ratio();
/// #
/// # view! { }
/// # }
/// ```
///
/// ## Server-Side Rendering
///
/// On the server this function returns a Signal that is always `1.0`.
pub fn use_device_pixel_ratio() -> Signal<f64> {
cfg_if! { if #[cfg(feature = "ssr")] {
let pixel_ratio = Signal::derive(|| 1.0);
} else {
let initial_pixel_ratio = window().device_pixel_ratio();
let (pixel_ratio, set_pixel_ratio) = create_signal(initial_pixel_ratio);
create_effect(move |_| {
let media = window().match_media(
&format!("(resolution: {}dppx)", pixel_ratio.get())
).unwrap();
_ = use_event_listener_with_options(
media,
change,
move |_| {
set_pixel_ratio.set(window().device_pixel_ratio());
},
UseEventListenerOptions::default()
.capture(false)
.passive(true)
.once(true),
);
});
}}
pixel_ratio.into()
}