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use crate::prelude::*;
use std::fmt;
use std::io::{self, Write};
pub struct Path {
pub stroke_width: f64,
pub stroke_color: Color,
pub fill_color: Color,
pub data: Data,
}
pub struct Data(pub Vec<Pos>);
pub struct Document {
pub frame: Frame,
pub items: Vec<Path>,
}
impl Data {
pub fn new(pos: Pos) -> Self {
Self(vec![pos])
}
pub fn line_to(&mut self, pos: Pos) {
self.0.push(pos);
}
pub fn with_line_to(mut self, pos: Pos) -> Self {
self.0.push(pos);
self
}
}
impl Path {
pub fn new(d: Data) -> Self {
Self {
stroke_width: 0.0,
stroke_color: Color(0, 0, 0),
fill_color: Color(255, 255, 255),
data: d,
}
}
pub fn with_fill_color(mut self, c: Color) -> Self {
self.fill_color = c;
self
}
pub fn with_stroke_color(mut self, c: Color) -> Self {
self.stroke_color = c;
self
}
pub fn with_stroke_width(mut self, w: f64) -> Self {
self.stroke_width = w;
self
}
}
impl Document {
pub fn new(frame: Frame) -> Self {
Self {
frame,
items: Vec::new(),
}
}
pub fn add(&mut self, path: Path) {
self.items.push(path);
}
pub fn save(&self, dest: &str) -> io::Result<()> {
if dest.ends_with(".svg") || dest.ends_with(".svg.tmp") {
let mut buffer = std::fs::File::create(dest)?;
buffer.write_all(&format!("{}", &self).into_bytes())
} else if dest.ends_with(".png") || dest.ends_with(".png.tmp") {
#[cfg(feature = "make-png")]
{
let svg_data = format!("{}", &self);
let tree = match usvg::Tree::from_str(&svg_data, &usvg::Options::default()) {
Ok(tree) => tree,
Err(_) => {
return Err(io::Error::new(
io::ErrorKind::InvalidData,
"Failed to parse svg",
))
}
};
let fit_to = usvg::FitTo::Original;
let bg = None;
let converted = match resvg::render(&tree, fit_to, bg) {
Some(img) => img,
None => {
return Err(io::Error::new(
io::ErrorKind::InvalidData,
"Failed to convert to png",
))
}
};
match converted.save_png(dest) {
Ok(_) => Ok(()),
Err(_) => {
return Err(io::Error::new(
io::ErrorKind::AddrNotAvailable,
"Could not save image",
))
}
}
}
#[cfg(not(feature = "make-png"))]
{
Err(io::Error::new(
io::ErrorKind::InvalidData,
"PNG is not supported with the current feature flags -- Make sure to include the feature 'make-png' to access this option -- See 'https://doc.rust-lang.org/cargo/reference/features.html' to learn how to do it",
))
}
} else {
Err(io::Error::new(
io::ErrorKind::InvalidData,
"Can only support .svg and .png extensions",
))
}
}
}
impl fmt::Display for Path {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"<path d=\"{}\" fill=\"{}\" stroke=\"{}\" stroke-width=\"{}\" />",
self.data, self.fill_color, self.stroke_color, self.stroke_width
)
}
}
impl fmt::Display for Data {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
if !self.0.is_empty() {
let Pos(x, y) = self.0[0];
write!(f, "M{},{} ", x, y)?;
}
for Pos(x, y) in self.0.iter().skip(1) {
write!(f, "L{},{} ", x, y)?;
}
write!(f, "z")
}
}
impl fmt::Display for Document {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let (x1, y1, x2, y2) = self.frame.into_tuple();
let src = String::from("http://www.w3.org/2000/svg");
writeln!(
f,
"<svg viewBox=\"{} {} {} {}\" xmlns=\"{}\">",
x1, y1, x2, y2, src
)?;
for p in self.items.iter() {
writeln!(f, "{}", p)?;
}
write!(f, "</svg>")
}
}