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use std::fmt;
/// `rgb({r},{g},{b})`
#[derive(Copy, Clone, PartialEq)]
pub struct Color {
pub r: u8,
pub g: u8,
pub b: u8,
}
impl fmt::Display for Color {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "rgb({},{},{})", self.r, self.g, self.b)
}
}
pub fn rgb(r: u8, g: u8, b: u8) -> Color { Color { r, g, b } }
pub fn black() -> Color { rgb(0, 0, 0) }
pub fn white() -> Color { rgb(255, 255, 255) }
pub fn red() -> Color { rgb(255, 0, 0) }
pub fn green() -> Color { rgb(0, 255, 0) }
pub fn blue() -> Color { rgb(0, 0, 255) }
/// `fill:{self}`
#[derive(Copy, Clone, PartialEq)]
pub enum Fill {
Color(Color),
None,
}
/// `stroke:{self}`
#[derive(Copy, Clone, PartialEq)]
pub enum Stroke {
Color(Color, f32),
None,
}
/// `fill:{fill};stroke:{stroke};fill-opacity:{opacity};`
#[derive(Copy, Clone, PartialEq)]
pub struct Style {
pub fill: Fill,
pub stroke: Stroke,
pub opacity: f32,
pub stroke_opacity: f32,
}
impl fmt::Display for Style {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{};{};fill-opacity:{};stroke-opacity:{};",
self.fill,
self.stroke,
self.opacity,
self.stroke_opacity,
)
}
}
impl Style {
pub fn default() -> Self {
Style {
fill: Fill::Color(black()),
stroke: Stroke::None,
opacity: 1.0,
stroke_opacity: 1.0,
}
}
}
impl fmt::Display for Fill {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Fill::Color(color) => write!(f, "fill:{}", color),
Fill::None => write!(f, "fill:none"),
}
}
}
impl fmt::Display for Stroke {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Stroke::Color(color, radius) => write!(f, "stroke:{};stroke-width:{}", color, radius),
Stroke::None => write!(f, "stroke:none"),
}
}
}
impl Into<Fill> for Color {
fn into(self) -> Fill {
Fill::Color(self)
}
}
impl Into<Stroke> for Color {
fn into(self) -> Stroke {
Stroke::Color(self, 1.0)
}
}
/// `<rect x="{x}" y="{y}" width="{w}" height="{h}" ... />`,
#[derive(Copy, Clone, PartialEq)]
pub struct Rectangle {
pub x: f32,
pub y: f32,
pub w: f32,
pub h: f32,
pub style: Style,
pub border_radius: f32,
}
pub fn rectangle(x: f32, y: f32, w: f32, h: f32) -> Rectangle {
Rectangle {
x, y, w, h,
style: Style::default(),
border_radius: 0.0,
}
}
impl Rectangle {
pub fn fill<F>(mut self, fill: F) -> Self
where F: Into<Fill> {
self.style.fill = fill.into();
self
}
pub fn stroke<S>(mut self, stroke: S) -> Self
where S: Into<Stroke> {
self.style.stroke = stroke.into();
self
}
pub fn opacity(mut self, opacity: f32) -> Self {
self.style.opacity = opacity;
self
}
pub fn stroke_opacity(mut self, opacity: f32) -> Self {
self.style.stroke_opacity = opacity;
self
}
pub fn style(mut self, style: Style) -> Self {
self.style = style;
self
}
pub fn border_radius(mut self, r: f32) -> Self {
self.border_radius = r;
self
}
pub fn offset(mut self, dx: f32, dy: f32) -> Self {
self.x += dx;
self.y += dy;
self
}
pub fn inflate(mut self, dx: f32, dy: f32) -> Self {
self.x -= dx;
self.y -= dy;
self.w += 2.0 * dx;
self.h += 2.0 * dy;
self
}
}
impl fmt::Display for Rectangle {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f,
r#"<rect x="{}" y="{}" width="{}" height="{}" ry="{}" style="{}" />""#,
self.x, self.y, self.w, self.h,
self.border_radius,
self.style,
)
}
}
/// `<circle cx="{x}" cy="{y}" r="{radius}" .../>`
#[derive(Copy, Clone, PartialEq)]
pub struct Circle {
pub x: f32,
pub y: f32,
pub radius: f32,
pub style: Style,
}
impl Circle {
pub fn fill<F>(mut self, fill: F) -> Self
where F: Into<Fill> {
self.style.fill = fill.into();
self
}
pub fn stroke<S>(mut self, stroke: S) -> Self
where S: Into<Stroke> {
self.style.stroke = stroke.into();
self
}
pub fn style(mut self, style: Style) -> Self {
self.style = style;
self
}
pub fn opacity(mut self, opacity: f32) -> Self {
self.style.opacity = opacity;
self
}
pub fn stroke_opacity(mut self, opacity: f32) -> Self {
self.style.stroke_opacity = opacity;
self
}
pub fn offset(mut self, dx: f32, dy: f32) -> Self {
self.x += dx;
self.y += dy;
self
}
pub fn inflate(mut self, by: f32) -> Self {
self.radius += by;
self
}
}
impl fmt::Display for Circle {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f,
r#"<circle cx="{}" cy="{}" r="{}" style="{}" />""#,
self.x, self.y, self.radius,
self.style,
)
}
}
/// `<path d="..." style="..."/>`
#[derive(Clone, PartialEq)]
pub struct Polygon {
pub points: Vec<[f32; 2]>,
pub closed: bool,
pub style: Style,
}
impl fmt::Display for Polygon {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, r#"<path d="#)?;
if self.points.len() > 0 {
write!(f, "M {} {} ", self.points[0][0], self.points[0][1])?;
for &p in &self.points[1..] {
write!(f, "L {} {} ", p[0], p[1])?;
}
if self.closed {
write!(f, "Z")?;
}
}
write!(f, r#"" style="{}"/>"#, self.style)
}
}
pub fn polygon<T: Copy + Into<[f32; 2]>>(pts: &[T]) -> Polygon {
let mut points = Vec::with_capacity(pts.len());
for p in pts {
points.push((*p).into());
}
Polygon {
points,
closed: true,
style: Style::default(),
}
}
pub fn triangle(x1: f32, y1: f32, x2: f32, y2: f32, x3: f32, y3: f32) -> Polygon {
polygon(&[[x1, y1], [x2, y2], [x3, y3]])
}
impl Polygon {
pub fn open(mut self) -> Self {
self.closed = false;
self
}
pub fn fill<F>(mut self, fill: F) -> Self
where F: Into<Fill> {
self.style.fill = fill.into();
self
}
pub fn stroke<S>(mut self, stroke: S) -> Self
where S: Into<Stroke> {
self.style.stroke = stroke.into();
self
}
pub fn opacity(mut self, opacity: f32) -> Self {
self.style.opacity = opacity;
self
}
pub fn stroke_opacity(mut self, opacity: f32) -> Self {
self.style.stroke_opacity = opacity;
self
}
pub fn style(mut self, style: Style) -> Self {
self.style = style;
self
}
}
/// `<path d="M {x1} {y1} L {x2} {y2}" ... />`
#[derive(Copy, Clone, PartialEq)]
pub struct LineSegment {
pub x1: f32,
pub x2: f32,
pub y1: f32,
pub y2: f32,
pub color: Color,
pub width: f32,
}
impl fmt::Display for LineSegment {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f,
r#"<path d="M {} {} L {} {}" style="stroke:{};stroke-width:{}"/>"#,
self.x1, self.y1,
self.x2, self.y2,
self.color,
self.width,
)
}
}
pub fn line_segment(x1: f32, y1: f32, x2: f32, y2: f32) -> LineSegment {
LineSegment {
x1, y1, x2, y2,
color: black(),
width: 1.0,
}
}
impl LineSegment {
pub fn color(mut self, color: Color) -> Self {
self.color = color;
self
}
pub fn width(mut self, width: f32) -> Self {
self.width = width;
self
}
pub fn offset(mut self, dx: f32, dy: f32) -> Self {
self.x1 += dx;
self.y1 += dy;
self.x2 += dx;
self.y2 += dy;
self
}
}
/// `<path d="..." />`
#[derive(Clone, PartialEq)]
pub struct Path {
pub ops: Vec<PathOp>,
pub style: Style,
}
/// `M {} {} L {} {} ...`
#[derive(Copy, Clone, PartialEq)]
pub enum PathOp {
MoveTo { x: f32, y: f32 },
LineTo { x: f32, y: f32 },
QuadraticTo { ctrl_x: f32, ctrl_y: f32, x: f32, y: f32 },
CubicTo { ctrl1_x: f32, ctrl1_y: f32, ctrl2_x: f32, ctrl2_y: f32, x: f32, y: f32 },
Close,
}
impl fmt::Display for PathOp {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
PathOp::MoveTo { x, y } => write!(f, "M {} {} ", x, y),
PathOp::LineTo { x, y } => write!(f, "L {} {} ", x, y),
PathOp::QuadraticTo { ctrl_x, ctrl_y, x, y } => write!(f, "Q {} {} {} {} ", ctrl_x, ctrl_y, x, y),
PathOp::CubicTo { ctrl1_x, ctrl1_y, ctrl2_x, ctrl2_y, x, y } => write!(f, "C {} {} {} {} {} {} ", ctrl1_x, ctrl1_y, ctrl2_x, ctrl2_y, x, y),
PathOp::Close => write!(f, "Z "),
}
}
}
impl fmt::Display for Path {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, r#"<path d=""#)?;
for op in &self.ops {
op.fmt(f)?;
}
write!(f, r#"" style="{}" />"#, self.style)
}
}
impl Path {
pub fn move_to(mut self, x: f32, y: f32) -> Self {
self.ops.push(PathOp::MoveTo { x, y });
self
}
pub fn line_to(mut self, x: f32, y: f32) -> Self {
self.ops.push(PathOp::LineTo { x, y });
self
}
pub fn quadratic_bezier_to(
mut self,
ctrl_x: f32, ctrl_y: f32,
x: f32, y: f32,
) -> Self {
self.ops.push(PathOp::QuadraticTo { ctrl_x, ctrl_y, x, y });
self
}
pub fn cubic_bezier_to(
mut self,
ctrl1_x: f32, ctrl1_y: f32,
ctrl2_x: f32, ctrl2_y: f32,
x: f32, y: f32,
) -> Self {
self.ops.push(PathOp::CubicTo { ctrl1_x, ctrl1_y, ctrl2_x, ctrl2_y, x, y });
self
}
pub fn close(mut self) -> Self {
self.ops.push(PathOp::Close);
self
}
pub fn fill<F>(mut self, fill: F) -> Self
where F: Into<Fill> {
self.style.fill = fill.into();
self
}
pub fn stroke<S>(mut self, stroke: S) -> Self
where S: Into<Stroke> {
self.style.stroke = stroke.into();
self
}
pub fn opacity(mut self, opacity: f32) -> Self {
self.style.opacity = opacity;
self
}
pub fn stroke_opacity(mut self, opacity: f32) -> Self {
self.style.stroke_opacity = opacity;
self
}
pub fn style(mut self, style: Style) -> Self {
self.style = style;
self
}
}
pub fn path() -> Path {
Path {
ops: Vec::new(),
style: Style::default(),
}
}
/// `<text x="{x}" y="{y}" ... > {text} </text>`
#[derive(Clone, PartialEq)]
pub struct Text {
pub x: f32, pub y: f32,
pub text: String,
pub color: Color,
pub align: Align,
pub size: f32,
}
impl fmt::Display for Text {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f,
r#"<text x="{}" y="{}" style="font-size:{}px;fill:{};{}"> {} </text>"#,
self.x, self.y,
self.size,
self.color,
self.align,
self.text,
)
}
}
pub fn text<T: Into<String>>(x: f32, y: f32, txt: T) -> Text {
Text {
x, y,
text: txt.into(),
color: black(),
align: Align::Left,
size: 10.0,
}
}
impl Text {
pub fn color(mut self, color: Color) -> Self {
self.color = color;
self
}
pub fn size(mut self, size: f32) -> Self {
self.size = size;
self
}
pub fn align(mut self, align: Align) -> Self {
self.align = align;
self
}
pub fn offset(mut self, dx: f32, dy: f32) -> Self {
self.x += dx;
self.y += dy;
self
}
}
pub struct Comment {
pub text: String,
}
pub fn comment<T: Into<String>>(text: T) -> Comment {
Comment {
text: text.into()
}
}
impl fmt::Display for Comment {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "<!-- {} -->", self.text)
}
}
/// `text-align:{self}`
#[derive(Copy, Clone, PartialEq)]
pub enum Align {
Left, Right, Center
}
impl fmt::Display for Align {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Align::Left => write!(f, "text-anchor:start;text-align:left;"),
Align::Right => write!(f, "text-anchor:end;text-align:right;"),
Align::Center => write!(f, "text-anchor:middle;text-align:center;"),
}
}
}
#[derive(Copy, Clone, PartialEq)]
pub struct BeginSvg {
pub w: f32,
pub h: f32,
}
impl fmt::Display for BeginSvg {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f,
self.w,
self.h,
)
}
}
/// `</svg>`
#[derive(Copy, Clone, PartialEq)]
pub struct EndSvg;
impl fmt::Display for EndSvg {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "</svg>")
}
}
/// `" "`
pub struct Indentation {
pub n: u32,
}
pub fn indent(n: u32) -> Indentation {
Indentation { n }
}
impl Indentation {
pub fn push(&mut self) {
self.n += 1;
}
pub fn pop(&mut self) {
self.n -= 1;
}
}
impl fmt::Display for Indentation {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
for _ in 0..self.n {
write!(f, " ")?;
}
Ok(())
}
}
#[test]
fn foo() {
println!("{}", BeginSvg { w: 800.0, h: 600.0 });
println!(" {}",
rectangle(20.0, 50.0, 200.0, 100.0)
.fill(red())
.stroke(Stroke::Color(black(), 3.0))
.border_radius(5.0)
);
println!(" {}", text(25.0, 100.0, "Foo!").size(42.0).color(white()));
println!("{}", EndSvg);
}