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🚧 Start implementing hatched fill patterns
authored by
Gwenn Le Bihan
and committed by
Ewen Le Bihan
6881fe3d
a8821c0d
+48
-4
+48
-4
src/fill.rs
+48
-4
src/fill.rs
···
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use crate::{Color, ColorMapping, RenderCSS};
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#[derive(Debug, Clone, Copy)]
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pub enum HatchDirection {
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Horizontal,
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Vertical,
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BottomUpDiagonal,
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TopDownDiagonal,
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}
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impl HatchDirection {
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pub fn svg_filter_name(&self) -> String {
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"hatch-".to_owned()
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+ match self {
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HatchDirection::Horizontal => "horizontal",
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HatchDirection::Vertical => "vertical",
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HatchDirection::BottomUpDiagonal => "bottom-up",
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HatchDirection::TopDownDiagonal => "top-down",
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}
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}
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pub fn svg_pattern_definition(&self) -> String {
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// https://stackoverflow.com/a/14500054/9943464
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format!(
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r#"<pattern id="{}" patternUnits="userSpaceOnUse" width="{}" height="{}">"#,
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self.svg_filter_name(),
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todo!(),
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todo!()
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) + &match self {
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HatchDirection::BottomUpDiagonal => format!(
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r#"<path
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d="M-1,1 l2,-2
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M0,4 l4,-4
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M3,5 l2,-2"
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style="stroke:black; stroke-width:1"
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/>"#
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),
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HatchDirection::Horizontal => todo!(),
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HatchDirection::Vertical => todo!(),
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HatchDirection::TopDownDiagonal => todo!(),
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} + "</pattern>"
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}
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}
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#[derive(Debug, Clone, Copy)]
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pub enum Fill {
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Solid(Color),
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Translucent(Color, f32),
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Hatched,
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Dotted,
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Hatched(HatchDirection),
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Dotted(f32),
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}
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impl RenderCSS for Fill {
···
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Fill::Translucent(color, opacity) => {
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format!("fill: {}; opacity: {};", color.to_string(colormap), opacity)
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}
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Fill::Dotted => unimplemented!(),
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Fill::Hatched => unimplemented!(),
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Fill::Dotted(radius) => unimplemented!(),
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Fill::Hatched(direction) => {
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format!("fill: url(#{});", direction.svg_filter_name())
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}
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}
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}
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