use crate::coord::Shift; use crate::drawing::{DrawingArea, IntoDrawingArea}; use plotters_backend::DrawingBackend; use plotters_svg::SVGBackend; #[cfg(feature = "evcxr_bitmap")] use plotters_bitmap::BitMapBackend; /// The wrapper for the generated SVG pub struct SVGWrapper(String, String); impl SVGWrapper { /// Displays the contents of the `SVGWrapper` struct. pub fn evcxr_display(&self) { println!("{:?}", self); } /// Sets the style of the `SVGWrapper` struct. pub fn style>(mut self, style: S) -> Self { self.1 = style.into(); self } } impl std::fmt::Debug for SVGWrapper { fn fmt(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result { let svg = self.0.as_str(); write!( formatter, "EVCXR_BEGIN_CONTENT text/html\n
{}
\nEVCXR_END_CONTENT", self.1, svg ) } } /// Start drawing an evcxr figure pub fn evcxr_figure< Draw: FnOnce(DrawingArea) -> Result<(), Box>, >( size: (u32, u32), draw: Draw, ) -> SVGWrapper { let mut buffer = "".to_string(); let root = SVGBackend::with_string(&mut buffer, size).into_drawing_area(); draw(root).expect("Drawing failure"); SVGWrapper(buffer, "".to_string()) } /// Start drawing an evcxr figure #[cfg(feature = "evcxr_bitmap")] pub fn evcxr_bitmap_figure< Draw: FnOnce(DrawingArea) -> Result<(), Box>, >( size: (u32, u32), draw: Draw, ) -> SVGWrapper { const PIXEL_SIZE : usize = 3; let mut buf = Vec::new(); buf.resize((size.0 as usize) * (size.1 as usize) * PIXEL_SIZE, 0); let root = BitMapBackend::with_buffer(&mut buf, size).into_drawing_area(); draw(root).expect("Drawing failure"); let mut buffer = "".to_string(); { let mut svg_root = SVGBackend::with_string(&mut buffer, size); svg_root .blit_bitmap((0, 0), size, &buf) .expect("Failure converting to SVG"); } SVGWrapper(buffer, "".to_string()) }