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add image loading
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@ -26,10 +26,15 @@ document-features = "0.2"
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derive_setters = "0.1"
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derive_more = "0.99"
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tinyset = "0.4"
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image = { version = "0.25", default-features = false, optional = true }
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[features]
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default = ["el_all", "builtin_font", "pixel_perfect_text"]
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default = ["el_all", "image", "builtin_font", "pixel_perfect_text"]
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#! Image loading support:
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## Enable image loading support using the `image` crate
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image = ["dep:image"]
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#! #### Built-in font:
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@ -83,6 +83,44 @@ impl UiInstance {
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self.atlas.add(width, data, format)
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}
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//TODO better error handling
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/// Add an image from a file to the texture atlas\
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/// (experimental, may be removed in the future)
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///
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/// Requires the `image` feature
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///
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/// # Panics:
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/// - If the file exists but contains invalid image data\
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/// (this will change to a soft error in the future)
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#[cfg(feature = "image")]
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pub fn add_image_file_path(&mut self, path: impl AsRef<std::path::Path>) -> Result<ImageHandle, std::io::Error> {
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use std::io::Read;
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// Open the file (and wrap it in a bufreader)
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let mut file = std::io::BufReader::new(std::fs::File::open(path)?);
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//Guess the image format from the magic bytes
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//Read like 64 bytes, which should be enough for magic byte detection
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//well this would fail if the image is somehow smaller than 64 bytes, but who the fvck cares...
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let mut magic = [0; 64];
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file.read_exact(&mut magic)?;
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let format = image::guess_format(&magic).expect("Invalid image data (FORMAT)");
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//Parse the image and read the raw uncompressed rgba data
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let image = image::load(file, format).expect("Invalid image data");
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let image_rgba = image.as_rgba8().unwrap();
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//Add the image to the atlas
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let handle = self.add_image(
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TextureFormat::Rgba,
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image_rgba,
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image.width() as usize
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);
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Ok(handle)
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}
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/// Push a font to the font stack\
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/// The font will be used for all text rendering until it is popped
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///
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