Move Canvas and QRCode to iced crate
Rename `canvas` modules to `geometry` in graphics subcrates
This commit is contained in:
Héctor Ramón Jiménez
parent
d13d19ba35
commit
6cc48b5c62
39 changed files with 140 additions and 148 deletions
287
tiny_skia/src/geometry.rs
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287
tiny_skia/src/geometry.rs
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@ -0,0 +1,287 @@
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use crate::{Point, Primitive, Rectangle, Size, Vector};
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use iced_graphics::geometry::fill::{self, Fill};
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use iced_graphics::geometry::stroke::{self, Stroke};
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use iced_graphics::geometry::{Path, Style, Text};
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use iced_graphics::Gradient;
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pub struct Frame {
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size: Size,
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transform: tiny_skia::Transform,
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stack: Vec<tiny_skia::Transform>,
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primitives: Vec<Primitive>,
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}
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impl Frame {
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pub fn new(size: Size) -> Self {
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Self {
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size,
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transform: tiny_skia::Transform::identity(),
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stack: Vec::new(),
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primitives: Vec::new(),
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}
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}
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pub fn width(&self) -> f32 {
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self.size.width
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}
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pub fn height(&self) -> f32 {
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self.size.height
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}
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pub fn size(&self) -> Size {
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self.size
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}
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pub fn center(&self) -> Point {
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Point::new(self.size.width / 2.0, self.size.height / 2.0)
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}
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pub fn fill(&mut self, path: &Path, fill: impl Into<Fill>) {
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let path = convert_path(path);
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let fill = fill.into();
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self.primitives.push(Primitive::Fill {
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path,
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paint: into_paint(fill.style),
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rule: into_fill_rule(fill.rule),
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transform: self.transform,
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});
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}
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pub fn fill_rectangle(
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&mut self,
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top_left: Point,
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size: Size,
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fill: impl Into<Fill>,
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) {
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let path = convert_path(&Path::rectangle(top_left, size));
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let fill = fill.into();
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self.primitives.push(Primitive::Fill {
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path,
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paint: tiny_skia::Paint {
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anti_alias: false,
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..into_paint(fill.style)
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},
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rule: into_fill_rule(fill.rule),
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transform: self.transform,
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});
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}
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pub fn stroke<'a>(&mut self, path: &Path, stroke: impl Into<Stroke<'a>>) {
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let path = convert_path(path);
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let stroke = stroke.into();
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let skia_stroke = into_stroke(&stroke);
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self.primitives.push(Primitive::Stroke {
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path,
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paint: into_paint(stroke.style),
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stroke: skia_stroke,
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transform: self.transform,
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});
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}
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pub fn fill_text(&mut self, text: impl Into<Text>) {
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let text = text.into();
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let position = if self.transform.is_identity() {
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text.position
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} else {
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let mut transformed = [tiny_skia::Point {
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x: text.position.x,
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y: text.position.y,
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}];
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self.transform.map_points(&mut transformed);
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Point::new(transformed[0].x, transformed[0].y)
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};
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// TODO: Use vectorial text instead of primitive
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self.primitives.push(Primitive::Text {
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content: text.content,
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bounds: Rectangle {
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x: position.x,
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y: position.y,
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width: f32::INFINITY,
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height: f32::INFINITY,
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},
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color: text.color,
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size: text.size,
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font: text.font,
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horizontal_alignment: text.horizontal_alignment,
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vertical_alignment: text.vertical_alignment,
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});
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}
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pub fn push_transform(&mut self) {
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self.stack.push(self.transform);
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}
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pub fn pop_transform(&mut self) {
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self.transform = self.stack.pop().expect("Pop transform");
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}
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pub fn clip(&mut self, _frame: Self, _translation: Vector) {}
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pub fn translate(&mut self, translation: Vector) {
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self.transform =
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self.transform.pre_translate(translation.x, translation.y);
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}
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pub fn rotate(&mut self, angle: f32) {
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self.transform = self
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.transform
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.pre_concat(tiny_skia::Transform::from_rotate(angle.to_degrees()));
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}
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pub fn scale(&mut self, scale: f32) {
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self.transform = self.transform.pre_scale(scale, scale);
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}
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pub fn into_primitive(self) -> Primitive {
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Primitive::Clip {
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bounds: Rectangle::new(Point::ORIGIN, self.size),
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content: Box::new(Primitive::Group {
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primitives: self.primitives,
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}),
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}
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}
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}
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fn convert_path(path: &Path) -> tiny_skia::Path {
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use iced_graphics::geometry::path::lyon_path;
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let mut builder = tiny_skia::PathBuilder::new();
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let mut last_point = Default::default();
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for event in path.raw().iter() {
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match event {
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lyon_path::Event::Begin { at } => {
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builder.move_to(at.x, at.y);
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last_point = at;
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}
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lyon_path::Event::Line { from, to } => {
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if last_point != from {
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builder.move_to(from.x, from.y);
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}
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builder.line_to(to.x, to.y);
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last_point = to;
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}
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lyon_path::Event::Quadratic { from, ctrl, to } => {
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if last_point != from {
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builder.move_to(from.x, from.y);
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}
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builder.quad_to(ctrl.x, ctrl.y, to.x, to.y);
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last_point = to;
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}
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lyon_path::Event::Cubic {
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from,
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ctrl1,
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ctrl2,
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to,
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} => {
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if last_point != from {
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builder.move_to(from.x, from.y);
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}
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builder
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.cubic_to(ctrl1.x, ctrl1.y, ctrl2.x, ctrl2.y, to.x, to.y);
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last_point = to;
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}
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lyon_path::Event::End { close, .. } => {
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if close {
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builder.close();
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}
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}
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}
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}
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builder
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.finish()
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.expect("Convert lyon path to tiny_skia path")
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}
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pub fn into_paint(style: Style) -> tiny_skia::Paint<'static> {
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tiny_skia::Paint {
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shader: match style {
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Style::Solid(color) => tiny_skia::Shader::SolidColor(
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tiny_skia::Color::from_rgba(color.b, color.g, color.r, color.a)
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.expect("Create color"),
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),
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Style::Gradient(gradient) => match gradient {
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Gradient::Linear(linear) => tiny_skia::LinearGradient::new(
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tiny_skia::Point {
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x: linear.start.x,
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y: linear.start.y,
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},
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tiny_skia::Point {
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x: linear.end.x,
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y: linear.end.y,
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},
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linear
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.color_stops
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.into_iter()
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.map(|stop| {
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tiny_skia::GradientStop::new(
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stop.offset,
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tiny_skia::Color::from_rgba(
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stop.color.b,
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stop.color.g,
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stop.color.r,
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stop.color.a,
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)
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.expect("Create color"),
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)
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})
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.collect(),
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tiny_skia::SpreadMode::Pad,
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tiny_skia::Transform::identity(),
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)
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.expect("Create linear gradient"),
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},
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},
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anti_alias: true,
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..Default::default()
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}
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}
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pub fn into_fill_rule(rule: fill::Rule) -> tiny_skia::FillRule {
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match rule {
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fill::Rule::EvenOdd => tiny_skia::FillRule::EvenOdd,
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fill::Rule::NonZero => tiny_skia::FillRule::Winding,
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}
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}
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pub fn into_stroke(stroke: &Stroke) -> tiny_skia::Stroke {
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tiny_skia::Stroke {
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width: stroke.width,
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line_cap: match stroke.line_cap {
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stroke::LineCap::Butt => tiny_skia::LineCap::Butt,
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stroke::LineCap::Square => tiny_skia::LineCap::Square,
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stroke::LineCap::Round => tiny_skia::LineCap::Round,
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},
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line_join: match stroke.line_join {
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stroke::LineJoin::Miter => tiny_skia::LineJoin::Miter,
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stroke::LineJoin::Round => tiny_skia::LineJoin::Round,
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stroke::LineJoin::Bevel => tiny_skia::LineJoin::Bevel,
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},
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dash: if stroke.line_dash.segments.is_empty() {
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None
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} else {
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tiny_skia::StrokeDash::new(
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stroke.line_dash.segments.into(),
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stroke.line_dash.offset as f32,
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)
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},
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..Default::default()
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}
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}
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