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Add support for rendering SVGs

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This commit is contained in:
Simon Hausmann 2022-07-14 16:08:38 +02:00 • committed by Simon Hausmann
parent 183d58b876
commit 01f09599dc
1 changed files with 46 additions and 2 deletions
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48
internal/backends/winit/renderer/skia/itemrenderer.rs
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@ -4,7 +4,8 @@
use std::pin::Pin;
use std::rc::Rc;
use i_slint_core::graphics::{euclid, SharedImageBuffer};
use i_slint_core::api::euclid::approxeq::ApproxEq;
use i_slint_core::graphics::{euclid, IntSize, SharedImageBuffer};
use i_slint_core::item_rendering::{ItemCache, ItemRenderer};
use i_slint_core::items::{ImageFit, ImageRendering, ItemRc, Opacity, RenderingResult};
use i_slint_core::{items, Brush, Color, ImageInner, Property};
@ -89,6 +90,8 @@ impl<'a> SkiaRenderer<'a> {
source_property: Pin<&Property<i_slint_core::graphics::Image>>,
mut dest_rect: skia_safe::Rect,
source_rect: Option<skia_safe::Rect>,
target_width: std::pin::Pin<&Property<f32>>,
target_height: std::pin::Pin<&Property<f32>>,
image_fit: ImageFit,
rendering: ImageRendering,
colorize_property: Option<Pin<&Property<Brush>>>,
@ -143,7 +146,44 @@ impl<'a> SkiaRenderer<'a> {
skia_safe::image::Image::from_raster_data(&image_info, data, bpl)
}
ImageInner::Svg(_) => None, // TODO
ImageInner::Svg(svg) => {
// Query target_width/height here again to ensure that changes will invalidate the item rendering cache.
let target_width = target_width.get();
let target_height = target_height.get();
let has_source_clipping = source_rect.map_or(false, |rect| {
!rect.is_empty()
&& (rect.left != 0.
|| rect.top != 0.
|| !rect.width().approx_eq(&target_width)
|| !rect.height().approx_eq(&target_height))
});
let source_size = if !has_source_clipping {
Some(IntSize::new(target_width as u32, target_height as u32))
} else {
// Source size & clipping is not implemented yet
None
};
let pixels = match svg.render(source_size.unwrap_or_default()).ok()? {
SharedImageBuffer::RGB8(_) => unreachable!(),
SharedImageBuffer::RGBA8(_) => unreachable!(),
SharedImageBuffer::RGBA8Premultiplied(pixels) => pixels,
};
let image_info = skia_safe::ImageInfo::new(
skia_safe::ISize::new(pixels.width() as i32, pixels.height() as i32),
skia_safe::ColorType::RGBA8888,
skia_safe::AlphaType::Premul,
None,
);
skia_safe::image::Image::from_raster_data(
&image_info,
skia_safe::Data::new_copy(pixels.as_bytes()),
pixels.stride() as usize * 4,
)
}
ImageInner::StaticTextures(_) => todo!(),
}
});
@ -240,6 +280,8 @@ impl<'a> ItemRenderer for SkiaRenderer<'a> {
i_slint_core::items::ImageItem::FIELD_OFFSETS.source.apply_pin(image),
geometry,
None,
items::ImageItem::FIELD_OFFSETS.width.apply_pin(image),
items::ImageItem::FIELD_OFFSETS.height.apply_pin(image),
image.image_fit(),
image.image_rendering(),
None,
@ -268,6 +310,8 @@ impl<'a> ItemRenderer for SkiaRenderer<'a> {
i_slint_core::items::ClippedImage::FIELD_OFFSETS.source.apply_pin(image),
geometry,
Some(source_rect),
items::ClippedImage::FIELD_OFFSETS.width.apply_pin(image),
items::ClippedImage::FIELD_OFFSETS.height.apply_pin(image),
image.image_fit(),
image.image_rendering(),
Some(items::ClippedImage::FIELD_OFFSETS.colorize.apply_pin(image)),