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svg-filters: simplify and refactor a bit

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This commit is contained in:
Schrottkatze 2024-03-16 23:57:09 +01:00
parent 5368951254
commit bf60bdd814
Signed by: schrottkatze
SSH key fingerprint: SHA256:hXb3t1vINBFCiDCmhRABHX5ocdbLiKyCdKI4HK2Rbbc
15 changed files with 532 additions and 227 deletions
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134
crates/svg-filters/src/codegen.rs
View file

@ -1,7 +1,9 @@
use std::{
borrow::Cow,
cmp,
collections::{BTreeSet, HashMap, HashSet},
collections::{BTreeSet, HashMap},
fmt::Display,
io::Read,
ops::Not,
};
use indexmap::IndexMap;
@ -10,11 +12,11 @@ use petgraph::{
graph::DiGraph,
prelude::{EdgeIndex, NodeIndex},
};
use quick_xml::{events::attributes::Attribute, name::QName, ElementWriter};
use quick_xml::ElementWriter;
use crate::{
types::{
graph::{edge::Edge, FilterGraph},
graph::{edge::Edge, FilterGraph, NodeInput},
nodes::{primitives::WriteElement, CommonAttrs},
},
Node,
@ -43,7 +45,7 @@ impl SvgDocument {
pub fn generate_svg(&self) -> String {
let mut result = Vec::new();
let mut doc_writer = quick_xml::Writer::new_with_indent(&mut result, b' ', 4);
let mut doc_writer = quick_xml::Writer::new_with_indent(&mut result, b' ', 2);
doc_writer
.create_element("svg")
@ -82,121 +84,35 @@ impl SvgDocument {
.map(|(primitive, common_attrs)| (node_idx, primitive, common_attrs))
})
.try_fold(writer, |writer, (node_idx, primitive, common_attrs)| {
let mut el_writer = primitive.element_writer(writer);
el_writer = input_attrs(node_idx, &graph.dag).write_into(el_writer);
el_writer = output_attrs(node_idx, &graph.dag).write_into(el_writer);
el_writer = Attrs::from(*common_attrs).write_into(el_writer);
el_writer.write_empty()
primitive.element_writer(
writer,
*common_attrs,
graph
.inputs(node_idx)
.into_iter()
.map(|v| v.to_string())
.collect(),
graph
.outputs(node_idx)
.is_empty()
.not()
.then_some(format!("r{}", node_idx.index())),
)
})?;
Ok(())
}
}
struct Attrs(IndexMap<String, String>);
impl Attrs {
fn write_into<'w, 'b>(
self,
el_writer: ElementWriter<'w, &'b mut Vec<u8>>,
) -> ElementWriter<'w, &'b mut Vec<u8>> {
let attrs = self.0.iter().map(|(k, v)| (k.as_str(), v.as_str()));
el_writer.with_attributes(attrs)
}
}
impl From<CommonAttrs> for Attrs {
fn from(value: CommonAttrs) -> Self {
let CommonAttrs {
x,
y,
width,
height,
} = value;
Self(IndexMap::from([
("x".to_owned(), x.to_string()),
("y".to_owned(), y.to_string()),
("width".to_owned(), width.to_string()),
("height".to_owned(), height.to_string()),
]))
}
}
#[allow(
clippy::unwrap_used,
reason = "in all cases of use of unwrap, it's values we got from the graph so we know it's safe"
)]
fn input_attrs(node_idx: NodeIndex, g: &DiGraph<Node, Edge>) -> Attrs {
let inputs: Vec<NodeIndex> = g
.neighbors_directed(node_idx, petgraph::Direction::Incoming)
.collect();
let node = g.node_weight(node_idx).unwrap();
if node.input_count() as usize != inputs.len() {
todo!("proper error handling for wrong numbers of inputs")
}
let mut inputs = inputs
.into_iter()
.map(|input_idx| {
let edge_idx = g.find_edge(input_idx, node_idx).unwrap();
let edge = g.edge_weight(edge_idx).unwrap();
let input_node = g.node_weight(input_idx).unwrap();
(input_node, edge_idx, edge)
})
.collect::<Vec<(&Node, EdgeIndex, &Edge)>>();
inputs.sort_by(|a, b| a.2.cmp(b.2));
let mut uniq = BTreeSet::new();
let no_duplicates = inputs.iter().all(|(_, _, edge)| uniq.insert(edge));
if no_duplicates {
Attrs(
inputs
.into_iter()
.map(|(input, edge_idx, edge)| {
let name = match input {
Node::StdInput(s) => format!("{s:?}"),
Node::Primitive { .. } => format_edge_idx(edge_idx),
};
(edge.to_string(), name)
})
.collect(),
)
} else {
todo!("better error handling for inputs with multiple values")
}
}
#[allow(
clippy::unwrap_used,
reason = "in all cases of use of unwrap, it's values we got from the graph so we know it's safe"
)]
fn output_attrs(node_idx: NodeIndex, g: &DiGraph<Node, Edge>) -> Attrs {
let outputs: Vec<NodeIndex> = g
.neighbors_directed(node_idx, petgraph::Direction::Outgoing)
.collect();
match outputs.len().cmp(&1) {
cmp::Ordering::Less => Attrs(IndexMap::new()),
cmp::Ordering::Equal => {
let output = outputs.first().unwrap();
let edge_idx = g.find_edge(node_idx, *output).unwrap();
Attrs(IndexMap::from([(
"result".to_string(),
format_edge_idx(edge_idx),
)]))
}
cmp::Ordering::Greater => todo!("better error handling for too many outputs"),
}
}
/// convenience method to avoid fuckups during future changes
fn format_edge_idx(idx: EdgeIndex) -> String {
format!("edge{}", idx.index())
}
fn format_node_idx(node_idx: NodeIndex) -> String {
format!("r{}", node_idx.index())
}
mod error {
use std::{error::Error, fmt::Display};

59
crates/svg-filters/src/main.rs
View file

@ -2,7 +2,10 @@ use std::hint::black_box;
use svg_filters::{
codegen::SvgDocument,
types::{graph::edge::Edge, nodes::primitives::color_matrix::ColorMatrixType},
types::{
graph::edge::Edge,
nodes::{primitives::color_matrix::ColorMatrixType, standard_input::StandardInput},
},
Node,
};
@ -25,39 +28,33 @@ fn main() {
let mut doc = SvgDocument::new();
let chromabb = doc.create_filter("chromabb_gen");
let chan_r = chromabb.add_node(Node::color_matrix(ColorMatrixType::Matrix(Box::new([
let chan_r = chromabb.color_matrix(
StandardInput::SourceGraphic,
ColorMatrixType::Matrix(Box::new([
1., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 1., 0.,
]))));
let chan_g = chromabb.add_node(Node::color_matrix(ColorMatrixType::Matrix(Box::new([
0., 0., 0., 0., 0., 0., 1., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 1., 0.,
]))));
let chan_b = chromabb.add_node(Node::color_matrix(ColorMatrixType::Matrix(Box::new([
])),
);
let offset_r = chromabb.offset(chan_r, 25., 0.);
let blur_r = chromabb.gaussian_blur_xy(offset_r, 5, 0);
let chan_b = chromabb.color_matrix(
StandardInput::SourceGraphic,
ColorMatrixType::Matrix(Box::new([
0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 1., 0., 0., 0., 0., 0., 1., 0.,
]))));
])),
);
let offset_b = chromabb.offset(chan_b, -25., 0.);
let blur_b = chromabb.gaussian_blur_xy(offset_b, 5, 0);
let offset_r = chromabb.add_node(Node::offset(25., 0.));
let offset_b = chromabb.add_node(Node::offset(-25., 0.));
let blur_r = chromabb.add_node(Node::gaussian_blur_xy(5, 0));
let blur_b = chromabb.add_node(Node::gaussian_blur_xy(5, 0));
let composite_rb = chromabb.composite_arithmetic(blur_r, blur_b, 0., 1., 1., 0.);
let composite_rb = chromabb.add_node(Node::composite_arithmetic(0., 1., 1., 0.));
let composite_final = chromabb.add_node(Node::composite_arithmetic(0., 1., 1., 0.));
let chan_g = chromabb.color_matrix(
StandardInput::SourceGraphic,
ColorMatrixType::Matrix(Box::new([
0., 0., 0., 0., 0., 0., 1., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 1., 0.,
])),
);
chromabb.composite_arithmetic(composite_rb, chan_g, 0., 1., 1., 0.);
chromabb.dag.extend_with_edges(&[
(chromabb.source_graphic(), chan_r),
(chromabb.source_graphic(), chan_b),
(chromabb.source_graphic(), chan_g),
(chan_r, offset_r),
(offset_r, blur_r),
(chan_b, offset_b),
(offset_b, blur_b),
]);
chromabb.dag.extend_with_edges(&[
(blur_r, composite_rb, Edge::new(0)),
(blur_b, composite_rb, Edge::new(1)),
(composite_rb, composite_final, Edge::new(0)),
(chan_g, composite_final, Edge::new(1)),
]);
black_box(doc.generate_svg());
println!("{}", doc.generate_svg());
}

66
crates/svg-filters/src/types.rs
View file

@ -3,68 +3,4 @@ pub mod nodes;
// pub mod old;
pub mod graph {
use std::iter::Iterator;
use petgraph::{data::Build, prelude::*};
use crate::Node;
use self::edge::Edge;
use super::nodes::standard_input::StandardInput;
#[derive(Debug)]
pub struct FilterGraph {
pub dag: DiGraph<Node, Edge>,
source_graphic_idx: NodeIndex,
}
impl FilterGraph {
pub fn new() -> Self {
let mut dag = DiGraph::new();
let source_graphic_idx = dag.add_node(Node::StdInput(StandardInput::SourceGraphic));
Self {
dag,
source_graphic_idx,
}
}
pub fn add_node(&mut self, node: Node) -> NodeIndex {
self.dag.add_node(node)
}
pub fn source_graphic(&self) -> NodeIndex {
self.source_graphic_idx
}
}
pub mod edge {
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
pub struct Edge {
input_idx: u8,
}
impl Edge {
pub fn new(input_idx: u8) -> Self {
Self { input_idx }
}
}
impl Default for Edge {
fn default() -> Self {
Self { input_idx: 0 }
}
}
impl ToString for Edge {
fn to_string(&self) -> String {
match self.input_idx {
0 => "in".to_owned(),
n => format!("in{}", n + 1),
}
}
}
}
}
pub mod graph;

202
crates/svg-filters/src/types/graph.rs Normal file
View file

@ -0,0 +1,202 @@
use std::fmt::{Debug, Display};
use petgraph::{data::Build, prelude::NodeIndex, prelude::*, visit::IntoNeighborsDirected};
use crate::Node;
use self::edge::Edge;
use super::nodes::standard_input::StandardInput;
#[derive(Debug)]
pub struct FilterGraph {
pub dag: DiGraph<Node, ()>,
source_graphic_idx: NodeIndex,
source_alpha_idx: NodeIndex,
background_image_idx: NodeIndex,
background_alpha_idx: NodeIndex,
fill_paint_idx: NodeIndex,
stroke_paint_idx: NodeIndex,
}
impl Default for FilterGraph {
fn default() -> Self {
Self::new()
}
}
#[derive(Debug, Clone, Copy)]
pub enum NodeInput {
Standard(StandardInput),
Idx(NodeIndex),
}
impl Display for NodeInput {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
NodeInput::Standard(s) => Debug::fmt(s, f),
NodeInput::Idx(idx) => write!(f, "r{}", idx.index()),
}
}
}
impl From<StandardInput> for NodeInput {
fn from(value: StandardInput) -> Self {
Self::Standard(value)
}
}
impl From<NodeIndex> for NodeInput {
fn from(value: NodeIndex) -> Self {
Self::Idx(value)
}
}
impl FilterGraph {
pub fn new() -> Self {
let mut dag = DiGraph::new();
let source_graphic_idx = dag.add_node(Node::StdInput(StandardInput::SourceGraphic));
let source_alpha_idx = dag.add_node(Node::StdInput(StandardInput::SourceAlpha));
let background_image_idx = dag.add_node(Node::StdInput(StandardInput::BackgroundImage));
let background_alpha_idx = dag.add_node(Node::StdInput(StandardInput::BackgroundAlpha));
let fill_paint_idx = dag.add_node(Node::StdInput(StandardInput::FillPaint));
let stroke_paint_idx = dag.add_node(Node::StdInput(StandardInput::StrokePaint));
Self {
dag,
source_graphic_idx,
source_alpha_idx,
background_image_idx,
background_alpha_idx,
fill_paint_idx,
stroke_paint_idx,
}
}
pub fn add_node(&mut self, node: Node) -> NodeIndex {
self.dag.add_node(node)
}
fn resolve_input(&self, input: NodeInput) -> NodeIndex {
match input {
NodeInput::Standard(StandardInput::SourceGraphic) => self.source_graphic_idx,
NodeInput::Standard(StandardInput::SourceAlpha) => self.source_alpha_idx,
NodeInput::Standard(StandardInput::BackgroundImage) => self.background_image_idx,
NodeInput::Standard(StandardInput::BackgroundAlpha) => self.background_alpha_idx,
NodeInput::Standard(StandardInput::FillPaint) => self.fill_paint_idx,
NodeInput::Standard(StandardInput::StrokePaint) => self.stroke_paint_idx,
NodeInput::Idx(i) => i,
}
}
#[allow(
clippy::unwrap_used,
reason = "we only operate on values we know exist, so unwrapping is safe"
)]
pub fn inputs(&self, node_idx: NodeIndex) -> Vec<NodeInput> {
let mut inputs = self
.dag
.neighbors_directed(node_idx, Direction::Incoming)
.map(|input_idx| (self.dag.find_edge(input_idx, node_idx).unwrap(), input_idx))
.collect::<Vec<_>>();
inputs.sort_by(|(a, _), (b, _)| a.cmp(b));
inputs
.into_iter()
.map(
|(_, input_idx)| match self.dag.node_weight(input_idx).unwrap() {
Node::StdInput(s) => NodeInput::Standard(*s),
Node::Primitive { .. } => NodeInput::Idx(input_idx),
},
)
.collect()
}
pub fn outputs(&self, node_idx: NodeIndex) -> Vec<NodeIndex> {
self.dag
.neighbors_directed(node_idx, Direction::Outgoing)
.collect()
}
pub fn source_graphic(&self) -> NodeIndex {
self.source_graphic_idx
}
pub fn source_alpha(&self) -> NodeIndex {
self.source_alpha_idx
}
pub fn background_image(&self) -> NodeIndex {
self.background_image_idx
}
pub fn background_alpha(&self) -> NodeIndex {
self.background_alpha_idx
}
pub fn fill_paint(&self) -> NodeIndex {
self.fill_paint_idx
}
pub fn stroke_paint(&self) -> NodeIndex {
self.stroke_paint_idx
}
}
pub mod abstracted_inputs {
use petgraph::{data::Build, prelude::NodeIndex};
use crate::{types::nodes::primitives::color_matrix::ColorMatrixType, Node};
use super::{FilterGraph, NodeInput};
impl FilterGraph {
pub fn color_matrix(
&mut self,
r#in: impl Into<NodeInput>,
cm_type: ColorMatrixType,
) -> NodeIndex {
let node_idx = self.dag.add_node(Node::color_matrix(cm_type));
self.dag
.add_edge(self.resolve_input(r#in.into()), node_idx, ());
node_idx
}
pub fn offset(&mut self, r#in: impl Into<NodeInput>, dx: f32, dy: f32) -> NodeIndex {
let node_idx = self.dag.add_node(Node::offset(dx, dy));
self.dag
.add_edge(self.resolve_input(r#in.into()), node_idx, ());
node_idx
}
pub fn gaussian_blur_xy(
&mut self,
r#in: impl Into<NodeInput>,
x: u16,
y: u16,
) -> NodeIndex {
let node_idx = self.dag.add_node(Node::gaussian_blur_xy(x, y));
self.dag
.add_edge(self.resolve_input(r#in.into()), node_idx, ());
node_idx
}
pub fn composite_arithmetic(
&mut self,
r#in: impl Into<NodeInput>,
in2: impl Into<NodeInput>,
k1: f32,
k2: f32,
k3: f32,
k4: f32,
) -> NodeIndex {
let node_idx = self
.dag
.add_node(Node::composite_arithmetic(k1, k2, k3, k4));
self.dag
.add_edge(self.resolve_input(r#in.into()), node_idx, ());
self.dag
.add_edge(self.resolve_input(in2.into()), node_idx, ());
node_idx
}
}
}
pub mod edge;

19
crates/svg-filters/src/types/graph/edge.rs Normal file
View file

@ -0,0 +1,19 @@
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Default)]
pub struct Edge {
input_idx: u8,
}
impl Edge {
pub fn new(input_idx: u8) -> Self {
Self { input_idx }
}
}
impl ToString for Edge {
fn to_string(&self) -> String {
match self.input_idx {
0 => "in".to_owned(),
n => format!("in{}", n + 1),
}
}
}

6
crates/svg-filters/src/types/length.rs
View file

@ -3,6 +3,12 @@ use std::fmt::Display;
#[derive(Default, Debug, Clone, Copy)]
pub struct Length(f32, Unit);
impl Length {
pub fn is_zero(&self) -> bool {
self.0 == 0.
}
}
impl Display for Length {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}{}", self.0, self.1)

39
crates/svg-filters/src/types/nodes.rs
View file

@ -1,6 +1,6 @@
use core::panic;
use std::borrow::Cow;
use quick_xml::events::attributes::Attribute;
use quick_xml::{events::attributes::Attribute, name::QName};
use self::{
primitives::{
@ -42,6 +42,41 @@ pub(crate) struct CommonAttrs {
pub height: Length,
}
impl From<CommonAttrs> for Vec<Attribute<'_>> {
fn from(val: CommonAttrs) -> Self {
let mut r = Vec::new();
if !val.x.is_zero() {
r.push(Attribute {
key: QName(b"x"),
value: Cow::from(val.x.to_string().into_bytes()),
});
}
if !val.y.is_zero() {
r.push(Attribute {
key: QName(b"y"),
value: Cow::from(val.y.to_string().into_bytes()),
});
}
if !val.width.is_zero() {
r.push(Attribute {
key: QName(b"width"),
value: Cow::from(val.width.to_string().into_bytes()),
});
}
if !val.height.is_zero() {
r.push(Attribute {
key: QName(b"height"),
value: Cow::from(val.height.to_string().into_bytes()),
});
}
r
}
}
impl Node {
pub fn simple(el: FePrimitive) -> Node {
Node::Primitive {

36
crates/svg-filters/src/types/nodes/primitives.rs
View file

@ -1,10 +1,8 @@
use std::convert::Into;
use quick_xml::{events::attributes::Attribute, ElementWriter, Writer};
use crate::types::length::{Coordinate, Length};
use self::blend::BlendMode;
use super::Node;
use super::CommonAttrs;
pub mod blend;
pub mod color_matrix;
@ -29,10 +27,34 @@ pub trait WriteElement {
fn element_writer<'writer, 'result>(
&self,
writer: &'writer mut Writer<&'result mut Vec<u8>>,
) -> ElementWriter<'writer, &'result mut Vec<u8>> {
writer
common: CommonAttrs,
inputs: Vec<String>,
output: Option<String>,
) -> quick_xml::Result<&'writer mut quick_xml::Writer<&'result mut Vec<u8>>> {
let attrs: Vec<_> = inputs
.into_iter()
.enumerate()
.map(|(i, edge)| {
(
match i {
0 => "in".to_owned(),
n => format!("in{}", n + 1),
}
.into_bytes(),
edge.into_bytes(),
)
})
.collect();
let mut el_writer = writer
.create_element(self.tag_name())
.with_attributes(Into::<Vec<Attribute<'_>>>::into(common))
.with_attributes(self.attrs())
.with_attributes(attrs.iter().map(|(k, v)| (&k[..], &v[..])));
if let Some(output) = output {
el_writer = el_writer.with_attribute(("result", output.as_str()));
}
el_writer.write_empty()
}
}

46
crates/svg-filters/src/types/nodes/primitives/blend.rs
View file

@ -1,3 +1,9 @@
use std::{borrow::Cow, fmt::Display};
use quick_xml::{events::attributes::Attribute, name::QName};
use super::WriteElement;
/// [feBlend](https://www.w3.org/TR/SVG11/filters.html#feBlendElement)
#[derive(Debug)]
pub struct Blend {
@ -18,6 +24,23 @@ impl Default for Blend {
}
}
impl WriteElement for Blend {
fn attrs(&self) -> Vec<quick_xml::events::attributes::Attribute> {
if let BlendMode::Normal = self.mode {
Vec::new()
} else {
vec![Attribute {
key: QName(b"mode"),
value: Cow::from(self.mode.to_string().into_bytes()),
}]
}
}
fn tag_name(&self) -> &'static str {
"feBlend"
}
}
/// as according to https://drafts.fxtf.org/compositing-1/#blending
#[derive(Debug)]
pub enum BlendMode {
@ -39,3 +62,26 @@ pub enum BlendMode {
Color,
Luminosity,
}
impl Display for BlendMode {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(match self {
BlendMode::Normal => "normal",
BlendMode::Multiply => "multiply",
BlendMode::Screen => "screen",
BlendMode::Overlay => "overlay",
BlendMode::Darken => "darken",
BlendMode::Lighten => "lighten",
BlendMode::ColorDodge => "color-dodge",
BlendMode::ColorBurn => "color-burn",
BlendMode::HardLight => "hard-light",
BlendMode::SoftLight => "soft-light",
BlendMode::Difference => "difference",
BlendMode::Exclusion => "exclusion",
BlendMode::Hue => "hue",
BlendMode::Saturation => "saturation",
BlendMode::Color => "color",
BlendMode::Luminosity => "luminosity",
})
}
}

12
crates/svg-filters/src/types/nodes/primitives/color_matrix.rs
View file

@ -1,6 +1,6 @@
use std::borrow::Cow;
use quick_xml::{events::attributes::Attribute, name::QName, se::to_string};
use quick_xml::{events::attributes::Attribute, name::QName};
use super::WriteElement;
@ -23,7 +23,7 @@ impl WriteElement for ColorMatrix {
key: QName(b"values"),
value: Cow::from(
v.iter()
.map(|v| v.to_string())
.map(std::string::ToString::to_string)
.reduce(|mut acc, e| {
acc.push(' ');
acc.push_str(&e);
@ -33,9 +33,11 @@ impl WriteElement for ColorMatrix {
.into_bytes(),
),
}],
ColorMatrixType::Saturate(v) => todo!(),
ColorMatrixType::HueRotate(v) => todo!(),
ColorMatrixType::LuminanceToAlpha => todo!(),
ColorMatrixType::Saturate(v) | ColorMatrixType::HueRotate(v) => vec![Attribute {
key: QName(b"values"),
value: Cow::from(v.to_string().into_bytes()),
}],
ColorMatrixType::LuminanceToAlpha => Vec::new(),
}
}

24
crates/svg-filters/src/types/nodes/primitives/flood.rs
View file

@ -1,4 +1,9 @@
use std::borrow::Cow;
use csscolorparser::Color;
use quick_xml::{events::attributes::Attribute, name::QName};
use super::WriteElement;
/// [feFlood](https://www.w3.org/TR/SVG11/filters.html#feFloodElement)
#[derive(Debug)]
@ -6,3 +11,22 @@ pub struct Flood {
flood_color: Color,
flood_opacity: f32,
}
impl WriteElement for Flood {
fn attrs(&self) -> Vec<quick_xml::events::attributes::Attribute> {
vec![
Attribute {
key: QName(b"flood-color"),
value: Cow::from(self.flood_color.to_hex_string().into_bytes()),
},
Attribute {
key: QName(b"flood-opacity"),
value: Cow::from(self.flood_opacity.to_string().into_bytes()),
},
]
}
fn tag_name(&self) -> &'static str {
"feFlood"
}
}

34
crates/svg-filters/src/types/nodes/primitives/morphology.rs
View file

@ -1,3 +1,9 @@
use std::{borrow::Cow, fmt::Display};
use quick_xml::{events::attributes::Attribute, name::QName};
use super::WriteElement;
/// [feMorphology](https://www.w3.org/TR/SVG11/filters.html#feMorphologyElement)
#[derive(Debug)]
pub struct Morphology {
@ -5,8 +11,36 @@ pub struct Morphology {
radius: (f32, f32),
}
impl WriteElement for Morphology {
fn attrs(&self) -> Vec<quick_xml::events::attributes::Attribute> {
vec![
Attribute {
key: QName(b"operator"),
value: Cow::from(self.operator.to_string().into_bytes()),
},
Attribute {
key: QName(b"radius"),
value: Cow::from(format!("{} {}", self.radius.0, self.radius.1).into_bytes()),
},
]
}
fn tag_name(&self) -> &'static str {
"feMorphology"
}
}
#[derive(Debug)]
enum Operator {
Erode,
Dilate,
}
impl Display for Operator {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(match self {
Operator::Erode => "erode",
Operator::Dilate => "dilate",
})
}
}

12
crates/svg-filters/src/types/nodes/primitives/tile.rs
View file

@ -1,3 +1,15 @@
use super::WriteElement;
/// [feTile](https://www.w3.org/TR/SVG11/filters.html#feTileElement)
#[derive(Debug)]
pub struct Tile;
impl WriteElement for Tile {
fn attrs(&self) -> Vec<quick_xml::events::attributes::Attribute> {
Vec::new()
}
fn tag_name(&self) -> &'static str {
"feTile"
}
}

66
crates/svg-filters/src/types/nodes/primitives/turbulence.rs
View file

@ -1,21 +1,75 @@
use std::borrow::Cow;
use quick_xml::{
events::attributes::{Attr, Attribute},
name::QName,
};
use super::WriteElement;
/// [feTurbulence](https://www.w3.org/TR/SVG11/filters.html#feTurbulenceElement)
#[derive(Debug)]
pub struct Turbulence {
base_frequency: (f32, f32),
num_octaves: (u16),
num_octaves: u16,
seed: u32,
stich_tiles: StitchTiles,
stitch_tiles: StitchTiles,
// attr name: type
noise_type: NoiseType,
}
#[derive(Debug)]
enum StitchTiles {
impl WriteElement for Turbulence {
fn attrs(&self) -> Vec<quick_xml::events::attributes::Attribute> {
let mut r = Vec::from([Attribute {
key: QName(b"baseFrequency"),
value: Cow::from(
format!("{} {}", self.base_frequency.0, self.base_frequency.1).into_bytes(),
),
}]);
if self.num_octaves != 1 {
r.push(Attribute {
key: QName(b"numOctaves"),
value: Cow::from(format!("{}", self.num_octaves).into_bytes()),
});
}
if self.seed != 0 {
r.push(Attribute {
key: QName(b"seed"),
value: Cow::from(self.seed.to_string().into_bytes()),
});
}
if self.stitch_tiles != StitchTiles::NoStitch {
r.push(Attribute {
key: QName(b"stitchTiles"),
value: Cow::from(b"stitch".to_vec()),
});
}
if self.noise_type != NoiseType::Turbulence {
r.push(Attribute {
key: QName(b"type"),
value: Cow::from(b"fractalNoise".to_vec()),
});
}
r
}
fn tag_name(&self) -> &'static str {
"feTurbulence"
}
}
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub enum StitchTiles {
Stitch,
NoStitch,
}
#[derive(Debug)]
enum NoiseType {
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub enum NoiseType {
Turbulence,
FractalNoise,
}

2
crates/svg-filters/src/types/nodes/standard_input.rs
View file

@ -1,6 +1,6 @@
/// [svg filter effect standard input](https://www.w3.org/TR/SVG11/filters.html#FilterPrimitiveInAttribute)
/// technically not a node, but for implementation simplicity... yeah
#[derive(Debug)]
#[derive(Debug, Clone, Copy)]
pub enum StandardInput {
SourceGraphic,
SourceAlpha,