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Add image scale option

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This commit is contained in:
Joscha 2025-02-22 21:54:54 +01:00
parent f8ff567a00
commit a6d5c9f671
4 changed files with 27 additions and 3 deletions
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19
showbits-common/src/widgets/image.rs
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@ -29,6 +29,7 @@ pub struct Image {
image: RgbaImage,
shrink: bool,
grow: bool,
scale: u32,
filter: FilterType,
dither_palette: Option<Palette<LinSrgb>>,
@ -42,6 +43,7 @@ impl Image {
shrink: true,
grow: false,
filter: FilterType::CatmullRom,
scale: 1,
dither_palette: None,
dither_algorithm: DitherAlgorithm::FloydSteinberg,
}
@ -57,6 +59,11 @@ impl Image {
self
}
pub fn with_scale(mut self, scale: u32) -> Self {
self.scale = scale.max(1);
self
}
pub fn with_filter(mut self, filter: FilterType) -> Self {
self.filter = filter;
self
@ -94,8 +101,8 @@ impl<C> Widget<C> for Image {
}
let size = Size {
width: self.image.width() as f32,
height: self.image.height() as f32,
width: (self.image.width() * self.scale) as f32,
height: (self.image.height() * self.scale) as f32,
};
let max_width = known.width.or(match available.width {
@ -134,7 +141,11 @@ impl<C> Widget<C> for Image {
_layout: &Layout,
) -> anyhow::Result<()> {
let (width, height) = view.size().to_u32();
let image = imageops::resize(&self.image, width, height, self.filter);
let iwidth = width / self.scale;
let iheight = height / self.scale;
let image = imageops::resize(&self.image, iwidth, iheight, self.filter);
let image = if let Some(palette) = &self.dither_palette {
self.dither_algorithm.dither(image, palette)
@ -142,6 +153,8 @@ impl<C> Widget<C> for Image {
image
};
let image = imageops::resize(&image, width, height, FilterType::Nearest);
view.image(&image);
Ok(())
}