mirror of
https://github.com/emilk/egui.git
synced 2026-06-27 07:03:14 -04:00
39e60e367f
* Part of https://github.com/emilk/egui/issues/3556 This PR replaces a bunch of options in `eframe::NativeOptions` with `egui::ViewportBuilder`. For instance: ``` diff let options = eframe::NativeOptions { - initial_window_size: Some(egui::vec2(320.0, 240.0)), - drag_and_drop_support: true, + viewport: egui::ViewportBuilder::default() + .with_inner_size([320.0, 240.0]) + .with_drag_and_drop(true), centered: true, ..Default::default() }; ```
63 lines
1.7 KiB
Rust
63 lines
1.7 KiB
Rust
//! Helpers for loading [`egui::IconData`].
|
|
|
|
use egui::IconData;
|
|
|
|
/// Helpers for working with [`IconData`].
|
|
pub trait IconDataExt {
|
|
/// Convert into [`image::RgbaImage`]
|
|
///
|
|
/// # Errors
|
|
/// If `width*height != 4 * rgba.len()`, or if the image is too big.
|
|
fn to_image(&self) -> Result<image::RgbaImage, String>;
|
|
|
|
/// Encode as PNG.
|
|
///
|
|
/// # Errors
|
|
/// The image is invalid, or the PNG encoder failed.
|
|
fn to_png_bytes(&self) -> Result<Vec<u8>, String>;
|
|
}
|
|
|
|
/// Load the contents of .png file.
|
|
///
|
|
/// # Errors
|
|
/// If this is not a valid png.
|
|
pub fn from_png_bytes(png_bytes: &[u8]) -> Result<IconData, image::ImageError> {
|
|
crate::profile_function!();
|
|
let image = image::load_from_memory(png_bytes)?;
|
|
Ok(from_image(image))
|
|
}
|
|
|
|
fn from_image(image: image::DynamicImage) -> IconData {
|
|
let image = image.into_rgba8();
|
|
IconData {
|
|
width: image.width(),
|
|
height: image.height(),
|
|
rgba: image.into_raw(),
|
|
}
|
|
}
|
|
|
|
impl IconDataExt for IconData {
|
|
fn to_image(&self) -> Result<image::RgbaImage, String> {
|
|
crate::profile_function!();
|
|
let Self {
|
|
rgba,
|
|
width,
|
|
height,
|
|
} = self.clone();
|
|
image::RgbaImage::from_raw(width, height, rgba).ok_or_else(|| "Invalid IconData".to_owned())
|
|
}
|
|
|
|
fn to_png_bytes(&self) -> Result<Vec<u8>, String> {
|
|
crate::profile_function!();
|
|
let image = self.to_image()?;
|
|
let mut png_bytes: Vec<u8> = Vec::new();
|
|
image
|
|
.write_to(
|
|
&mut std::io::Cursor::new(&mut png_bytes),
|
|
image::ImageOutputFormat::Png,
|
|
)
|
|
.map_err(|err| err.to_string())?;
|
|
Ok(png_bytes)
|
|
}
|
|
}
|