1use anyhow::Result;
 2use base64::prelude::*;
 3use gpui::{img, ClipboardItem, Image, ImageFormat, Pixels, RenderImage, WindowContext};
 4use std::sync::Arc;
 5use ui::{div, prelude::*, IntoElement, Styled};
 6
 7use crate::outputs::OutputContent;
 8
 9/// ImageView renders an image inline in an editor, adapting to the line height to fit the image.
10pub struct ImageView {
11    clipboard_image: Arc<Image>,
12    height: u32,
13    width: u32,
14    image: Arc<RenderImage>,
15}
16
17impl ImageView {
18    pub fn from(base64_encoded_data: &str) -> Result<Self> {
19        let bytes = BASE64_STANDARD.decode(base64_encoded_data.trim())?;
20
21        let format = image::guess_format(&bytes)?;
22        let mut data = image::load_from_memory_with_format(&bytes, format)?.into_rgba8();
23
24        // Convert from RGBA to BGRA.
25        for pixel in data.chunks_exact_mut(4) {
26            pixel.swap(0, 2);
27        }
28
29        let height = data.height();
30        let width = data.width();
31
32        let gpui_image_data = RenderImage::new(vec![image::Frame::new(data)]);
33
34        let format = match format {
35            image::ImageFormat::Png => ImageFormat::Png,
36            image::ImageFormat::Jpeg => ImageFormat::Jpeg,
37            image::ImageFormat::Gif => ImageFormat::Gif,
38            image::ImageFormat::WebP => ImageFormat::Webp,
39            image::ImageFormat::Tiff => ImageFormat::Tiff,
40            image::ImageFormat::Bmp => ImageFormat::Bmp,
41            _ => {
42                return Err(anyhow::anyhow!("unsupported image format"));
43            }
44        };
45
46        // Convert back to a GPUI image for use with the clipboard
47        let clipboard_image = Arc::new(Image {
48            format,
49            bytes,
50            id: gpui_image_data.id.0 as u64,
51        });
52
53        Ok(ImageView {
54            clipboard_image,
55            height,
56            width,
57            image: Arc::new(gpui_image_data),
58        })
59    }
60}
61
62impl Render for ImageView {
63    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
64        let line_height = cx.line_height();
65
66        let (height, width) = if self.height as f32 / line_height.0 == u8::MAX as f32 {
67            let height = u8::MAX as f32 * line_height.0;
68            let width = self.width as f32 * height / self.height as f32;
69            (height, width)
70        } else {
71            (self.height as f32, self.width as f32)
72        };
73
74        let image = self.image.clone();
75
76        div().h(Pixels(height)).w(Pixels(width)).child(img(image))
77    }
78}
79
80impl OutputContent for ImageView {
81    fn clipboard_content(&self, _cx: &WindowContext) -> Option<ClipboardItem> {
82        Some(ClipboardItem::new_image(self.clipboard_image.as_ref()))
83    }
84
85    fn has_clipboard_content(&self, _cx: &WindowContext) -> bool {
86        true
87    }
88}