111 lines
2.5 KiB
Rust
111 lines
2.5 KiB
Rust
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use image::*;
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use serde::Serialize;
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use crate::documents::*;
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use crate::xml_builder::*;
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#[derive(Debug, Clone, Serialize, PartialEq)]
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#[serde(rename_all = "camelCase")]
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pub struct Pic {
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pub id: usize,
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pub image: Vec<u8>,
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pub size: (u32, u32),
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}
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impl Pic {
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pub fn new(buf: Vec<u8>) -> Pic {
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let id = generate_pic_id();
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let dimg = image::load_from_memory(&buf).unwrap();
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let size = dimg.dimensions();
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let mut image = vec![];
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dimg
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.write_to(&mut image, ImageFormat::Png)
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.expect("Unable to write");
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Self { id, image, size }
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}
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pub fn size(mut self, w_px: u32, h_px: u32) -> Pic {
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self.size = (w_px, h_px);
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self
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}
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}
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impl BuildXML for Pic {
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fn build(&self) -> Vec<u8> {
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let b = XMLBuilder::new();
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let w = format!("{}", crate::types::emu::from_px(self.size.0));
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let h = format!("{}", crate::types::emu::from_px(self.size.1));
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b.open_pic("http://schemas.openxmlformats.org/drawingml/2006/picture")
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.open_pic_nv_pic_pr()
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.pic_c_nv_pr("0", "")
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.open_pic_c_nv_pic_pr()
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.a_pic_locks("1", "1")
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.close()
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.close()
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.open_blip_fill()
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.a_blip(&create_pic_rid(self.id))
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.a_src_rect()
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.open_a_stretch()
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.a_fill_rect()
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.close()
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.close()
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.open_pic_sp_pr("auto")
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.open_a_xfrm()
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.a_off("0", "0")
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.a_ext(&w, &h)
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.close()
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.open_a_prst_geom("rect")
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.a_av_lst()
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.close()
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.close()
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.close()
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.build()
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[cfg(test)]
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use pretty_assertions::assert_eq;
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use std::str;
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#[test]
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fn test_pic_build() {
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use std::io::Read;
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let mut img = std::fs::File::open("../images/cat_min.jpg").unwrap();
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let mut buf = Vec::new();
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let _ = img.read_to_end(&mut buf).unwrap();
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let b = Pic::new(buf).build();
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assert_eq!(
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str::from_utf8(&b).unwrap(),
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r#"<pic:pic xmlns:pic="http://schemas.openxmlformats.org/drawingml/2006/picture">
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<pic:nvPicPr>
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<pic:cNvPr id="0" name="" />
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<pic:cNvPicPr>
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<a:picLocks noChangeAspect="1" noChangeArrowheads="1" />
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</pic:cNvPicPr>
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</pic:nvPicPr>
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<pic:blipFill>
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<a:blip r:embed="rIdImage123" />
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<a:srcRect />
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<a:stretch>
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<a:fillRect />
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</a:stretch>
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</pic:blipFill>
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<pic:spPr bwMode="auto">
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<a:xfrm>
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<a:off x="0" y="0" />
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<a:ext cx="3048000" cy="2286000" />
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</a:xfrm>
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<a:prstGeom prst="rect">
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<a:avLst />
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</a:prstGeom>
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</pic:spPr>
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</pic:pic>"#
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);
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}
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}
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