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authorLibravatar Héctor Ramón Jiménez <hector0193@gmail.com>2023-03-01 21:34:26 +0100
committerLibravatar Héctor Ramón Jiménez <hector0193@gmail.com>2023-03-01 21:34:26 +0100
commit5fd5d1cdf8e5354788dc40729c4565ef377d3bba (patch)
tree0921efc7dc13a3050e03482147a791f85515f1f2 /graphics/src/widget
parent3f6e28fa9b1b8d911f765c9efb5249a9e0c942d5 (diff)
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Implement `Canvas` support for `iced_tiny_skia`
Diffstat (limited to 'graphics/src/widget')
-rw-r--r--graphics/src/widget/canvas.rs268
-rw-r--r--graphics/src/widget/canvas/cache.rs100
-rw-r--r--graphics/src/widget/canvas/cursor.rs64
-rw-r--r--graphics/src/widget/canvas/event.rs21
-rw-r--r--graphics/src/widget/canvas/fill.rs72
-rw-r--r--graphics/src/widget/canvas/frame.rs530
-rw-r--r--graphics/src/widget/canvas/geometry.rs24
-rw-r--r--graphics/src/widget/canvas/path.rs109
-rw-r--r--graphics/src/widget/canvas/path/arc.rs42
-rw-r--r--graphics/src/widget/canvas/path/builder.rs198
-rw-r--r--graphics/src/widget/canvas/program.rs102
-rw-r--r--graphics/src/widget/canvas/stroke.rs126
-rw-r--r--graphics/src/widget/canvas/style.rs23
-rw-r--r--graphics/src/widget/canvas/text.rs57
-rw-r--r--graphics/src/widget/qr_code.rs301
15 files changed, 0 insertions, 2037 deletions
diff --git a/graphics/src/widget/canvas.rs b/graphics/src/widget/canvas.rs
deleted file mode 100644
index a8d050f5..00000000
--- a/graphics/src/widget/canvas.rs
+++ /dev/null
@@ -1,268 +0,0 @@
-//! Draw 2D graphics for your users.
-//!
-//! A [`Canvas`] widget can be used to draw different kinds of 2D shapes in a
-//! [`Frame`]. It can be used for animation, data visualization, game graphics,
-//! and more!
-pub mod event;
-pub mod fill;
-pub mod path;
-pub mod stroke;
-
-mod cache;
-mod cursor;
-mod frame;
-mod geometry;
-mod program;
-mod style;
-mod text;
-
-pub use crate::gradient::{self, Gradient};
-pub use cache::Cache;
-pub use cursor::Cursor;
-pub use event::Event;
-pub use fill::{Fill, FillRule};
-pub use frame::Frame;
-pub use geometry::Geometry;
-pub use path::Path;
-pub use program::Program;
-pub use stroke::{LineCap, LineDash, LineJoin, Stroke};
-pub use style::Style;
-pub use text::Text;
-
-use crate::{Backend, Primitive, Renderer};
-
-use iced_native::layout::{self, Layout};
-use iced_native::mouse;
-use iced_native::renderer;
-use iced_native::widget::tree::{self, Tree};
-use iced_native::{
- Clipboard, Element, Length, Point, Rectangle, Shell, Size, Vector, Widget,
-};
-
-use std::marker::PhantomData;
-
-/// A widget capable of drawing 2D graphics.
-///
-/// ## Drawing a simple circle
-/// If you want to get a quick overview, here's how we can draw a simple circle:
-///
-/// ```no_run
-/// # mod iced {
-/// # pub mod widget {
-/// # pub use iced_graphics::widget::canvas;
-/// # }
-/// # pub use iced_native::{Color, Rectangle, Theme};
-/// # }
-/// use iced::widget::canvas::{self, Canvas, Cursor, Fill, Frame, Geometry, Path, Program};
-/// use iced::{Color, Rectangle, Theme};
-///
-/// // First, we define the data we need for drawing
-/// #[derive(Debug)]
-/// struct Circle {
-/// radius: f32,
-/// }
-///
-/// // Then, we implement the `Program` trait
-/// impl Program<()> for Circle {
-/// type State = ();
-///
-/// fn draw(&self, _state: &(), _theme: &Theme, bounds: Rectangle, _cursor: Cursor) -> Vec<Geometry>{
-/// // We prepare a new `Frame`
-/// let mut frame = Frame::new(bounds.size());
-///
-/// // We create a `Path` representing a simple circle
-/// let circle = Path::circle(frame.center(), self.radius);
-///
-/// // And fill it with some color
-/// frame.fill(&circle, Color::BLACK);
-///
-/// // Finally, we produce the geometry
-/// vec![frame.into_geometry()]
-/// }
-/// }
-///
-/// // Finally, we simply use our `Circle` to create the `Canvas`!
-/// let canvas = Canvas::new(Circle { radius: 50.0 });
-/// ```
-#[derive(Debug)]
-pub struct Canvas<Message, Theme, P>
-where
- P: Program<Message, Theme>,
-{
- width: Length,
- height: Length,
- program: P,
- message_: PhantomData<Message>,
- theme_: PhantomData<Theme>,
-}
-
-impl<Message, Theme, P> Canvas<Message, Theme, P>
-where
- P: Program<Message, Theme>,
-{
- const DEFAULT_SIZE: f32 = 100.0;
-
- /// Creates a new [`Canvas`].
- pub fn new(program: P) -> Self {
- Canvas {
- width: Length::Fixed(Self::DEFAULT_SIZE),
- height: Length::Fixed(Self::DEFAULT_SIZE),
- program,
- message_: PhantomData,
- theme_: PhantomData,
- }
- }
-
- /// Sets the width of the [`Canvas`].
- pub fn width(mut self, width: impl Into<Length>) -> Self {
- self.width = width.into();
- self
- }
-
- /// Sets the height of the [`Canvas`].
- pub fn height(mut self, height: impl Into<Length>) -> Self {
- self.height = height.into();
- self
- }
-}
-
-impl<Message, P, B, T> Widget<Message, Renderer<B, T>> for Canvas<Message, T, P>
-where
- P: Program<Message, T>,
- B: Backend,
-{
- fn tag(&self) -> tree::Tag {
- struct Tag<T>(T);
- tree::Tag::of::<Tag<P::State>>()
- }
-
- fn state(&self) -> tree::State {
- tree::State::new(P::State::default())
- }
-
- fn width(&self) -> Length {
- self.width
- }
-
- fn height(&self) -> Length {
- self.height
- }
-
- fn layout(
- &self,
- _renderer: &Renderer<B, T>,
- limits: &layout::Limits,
- ) -> layout::Node {
- let limits = limits.width(self.width).height(self.height);
- let size = limits.resolve(Size::ZERO);
-
- layout::Node::new(size)
- }
-
- fn on_event(
- &mut self,
- tree: &mut Tree,
- event: iced_native::Event,
- layout: Layout<'_>,
- cursor_position: Point,
- _renderer: &Renderer<B, T>,
- _clipboard: &mut dyn Clipboard,
- shell: &mut Shell<'_, Message>,
- ) -> event::Status {
- let bounds = layout.bounds();
-
- let canvas_event = match event {
- iced_native::Event::Mouse(mouse_event) => {
- Some(Event::Mouse(mouse_event))
- }
- iced_native::Event::Touch(touch_event) => {
- Some(Event::Touch(touch_event))
- }
- iced_native::Event::Keyboard(keyboard_event) => {
- Some(Event::Keyboard(keyboard_event))
- }
- _ => None,
- };
-
- let cursor = Cursor::from_window_position(cursor_position);
-
- if let Some(canvas_event) = canvas_event {
- let state = tree.state.downcast_mut::<P::State>();
-
- let (event_status, message) =
- self.program.update(state, canvas_event, bounds, cursor);
-
- if let Some(message) = message {
- shell.publish(message);
- }
-
- return event_status;
- }
-
- event::Status::Ignored
- }
-
- fn mouse_interaction(
- &self,
- tree: &Tree,
- layout: Layout<'_>,
- cursor_position: Point,
- _viewport: &Rectangle,
- _renderer: &Renderer<B, T>,
- ) -> mouse::Interaction {
- let bounds = layout.bounds();
- let cursor = Cursor::from_window_position(cursor_position);
- let state = tree.state.downcast_ref::<P::State>();
-
- self.program.mouse_interaction(state, bounds, cursor)
- }
-
- fn draw(
- &self,
- tree: &Tree,
- renderer: &mut Renderer<B, T>,
- theme: &T,
- _style: &renderer::Style,
- layout: Layout<'_>,
- cursor_position: Point,
- _viewport: &Rectangle,
- ) {
- use iced_native::Renderer as _;
-
- let bounds = layout.bounds();
-
- if bounds.width < 1.0 || bounds.height < 1.0 {
- return;
- }
-
- let translation = Vector::new(bounds.x, bounds.y);
- let cursor = Cursor::from_window_position(cursor_position);
- let state = tree.state.downcast_ref::<P::State>();
-
- renderer.with_translation(translation, |renderer| {
- renderer.draw_primitive(Primitive::Group {
- primitives: self
- .program
- .draw(state, theme, bounds, cursor)
- .into_iter()
- .map(Geometry::into_primitive)
- .collect(),
- });
- });
- }
-}
-
-impl<'a, Message, P, B, T> From<Canvas<Message, T, P>>
- for Element<'a, Message, Renderer<B, T>>
-where
- Message: 'a,
- P: Program<Message, T> + 'a,
- B: Backend,
- T: 'a,
-{
- fn from(
- canvas: Canvas<Message, T, P>,
- ) -> Element<'a, Message, Renderer<B, T>> {
- Element::new(canvas)
- }
-}
diff --git a/graphics/src/widget/canvas/cache.rs b/graphics/src/widget/canvas/cache.rs
deleted file mode 100644
index 52217bbb..00000000
--- a/graphics/src/widget/canvas/cache.rs
+++ /dev/null
@@ -1,100 +0,0 @@
-use crate::widget::canvas::{Frame, Geometry};
-use crate::Primitive;
-
-use iced_native::Size;
-use std::{cell::RefCell, sync::Arc};
-
-enum State {
- Empty,
- Filled {
- bounds: Size,
- primitive: Arc<Primitive>,
- },
-}
-
-impl Default for State {
- fn default() -> Self {
- State::Empty
- }
-}
-/// A simple cache that stores generated [`Geometry`] to avoid recomputation.
-///
-/// A [`Cache`] will not redraw its geometry unless the dimensions of its layer
-/// change or it is explicitly cleared.
-#[derive(Debug, Default)]
-pub struct Cache {
- state: RefCell<State>,
-}
-
-impl Cache {
- /// Creates a new empty [`Cache`].
- pub fn new() -> Self {
- Cache {
- state: Default::default(),
- }
- }
-
- /// Clears the [`Cache`], forcing a redraw the next time it is used.
- pub fn clear(&self) {
- *self.state.borrow_mut() = State::Empty;
- }
-
- /// Draws [`Geometry`] using the provided closure and stores it in the
- /// [`Cache`].
- ///
- /// The closure will only be called when
- /// - the bounds have changed since the previous draw call.
- /// - the [`Cache`] is empty or has been explicitly cleared.
- ///
- /// Otherwise, the previously stored [`Geometry`] will be returned. The
- /// [`Cache`] is not cleared in this case. In other words, it will keep
- /// returning the stored [`Geometry`] if needed.
- pub fn draw(
- &self,
- bounds: Size,
- draw_fn: impl FnOnce(&mut Frame),
- ) -> Geometry {
- use std::ops::Deref;
-
- if let State::Filled {
- bounds: cached_bounds,
- primitive,
- } = self.state.borrow().deref()
- {
- if *cached_bounds == bounds {
- return Geometry::from_primitive(Primitive::Cached {
- cache: primitive.clone(),
- });
- }
- }
-
- let mut frame = Frame::new(bounds);
- draw_fn(&mut frame);
-
- let primitive = {
- let geometry = frame.into_geometry();
-
- Arc::new(geometry.into_primitive())
- };
-
- *self.state.borrow_mut() = State::Filled {
- bounds,
- primitive: primitive.clone(),
- };
-
- Geometry::from_primitive(Primitive::Cached { cache: primitive })
- }
-}
-
-impl std::fmt::Debug for State {
- fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- match self {
- State::Empty => write!(f, "Empty"),
- State::Filled { primitive, bounds } => f
- .debug_struct("Filled")
- .field("primitive", primitive)
- .field("bounds", bounds)
- .finish(),
- }
- }
-}
diff --git a/graphics/src/widget/canvas/cursor.rs b/graphics/src/widget/canvas/cursor.rs
deleted file mode 100644
index 9588d129..00000000
--- a/graphics/src/widget/canvas/cursor.rs
+++ /dev/null
@@ -1,64 +0,0 @@
-use iced_native::{Point, Rectangle};
-
-/// The mouse cursor state.
-#[derive(Debug, Clone, Copy, PartialEq)]
-pub enum Cursor {
- /// The cursor has a defined position.
- Available(Point),
-
- /// The cursor is currently unavailable (i.e. out of bounds or busy).
- Unavailable,
-}
-
-impl Cursor {
- // TODO: Remove this once this type is used in `iced_native` to encode
- // proper cursor availability
- pub(crate) fn from_window_position(position: Point) -> Self {
- if position.x < 0.0 || position.y < 0.0 {
- Cursor::Unavailable
- } else {
- Cursor::Available(position)
- }
- }
-
- /// Returns the absolute position of the [`Cursor`], if available.
- pub fn position(&self) -> Option<Point> {
- match self {
- Cursor::Available(position) => Some(*position),
- Cursor::Unavailable => None,
- }
- }
-
- /// Returns the relative position of the [`Cursor`] inside the given bounds,
- /// if available.
- ///
- /// If the [`Cursor`] is not over the provided bounds, this method will
- /// return `None`.
- pub fn position_in(&self, bounds: &Rectangle) -> Option<Point> {
- if self.is_over(bounds) {
- self.position_from(bounds.position())
- } else {
- None
- }
- }
-
- /// Returns the relative position of the [`Cursor`] from the given origin,
- /// if available.
- pub fn position_from(&self, origin: Point) -> Option<Point> {
- match self {
- Cursor::Available(position) => {
- Some(Point::new(position.x - origin.x, position.y - origin.y))
- }
- Cursor::Unavailable => None,
- }
- }
-
- /// Returns whether the [`Cursor`] is currently over the provided bounds
- /// or not.
- pub fn is_over(&self, bounds: &Rectangle) -> bool {
- match self {
- Cursor::Available(position) => bounds.contains(*position),
- Cursor::Unavailable => false,
- }
- }
-}
diff --git a/graphics/src/widget/canvas/event.rs b/graphics/src/widget/canvas/event.rs
deleted file mode 100644
index 7c733a4d..00000000
--- a/graphics/src/widget/canvas/event.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-//! Handle events of a canvas.
-use iced_native::keyboard;
-use iced_native::mouse;
-use iced_native::touch;
-
-pub use iced_native::event::Status;
-
-/// A [`Canvas`] event.
-///
-/// [`Canvas`]: crate::widget::Canvas
-#[derive(Debug, Clone, Copy, PartialEq)]
-pub enum Event {
- /// A mouse event.
- Mouse(mouse::Event),
-
- /// A touch event.
- Touch(touch::Event),
-
- /// A keyboard event.
- Keyboard(keyboard::Event),
-}
diff --git a/graphics/src/widget/canvas/fill.rs b/graphics/src/widget/canvas/fill.rs
deleted file mode 100644
index e954ebb5..00000000
--- a/graphics/src/widget/canvas/fill.rs
+++ /dev/null
@@ -1,72 +0,0 @@
-//! Fill [crate::widget::canvas::Geometry] with a certain style.
-use crate::{Color, Gradient};
-
-pub use crate::widget::canvas::Style;
-
-/// The style used to fill geometry.
-#[derive(Debug, Clone)]
-pub struct Fill {
- /// The color or gradient of the fill.
- ///
- /// By default, it is set to [`Style::Solid`] with [`Color::BLACK`].
- pub style: Style,
-
- /// The fill rule defines how to determine what is inside and what is
- /// outside of a shape.
- ///
- /// See the [SVG specification][1] for more details.
- ///
- /// By default, it is set to `NonZero`.
- ///
- /// [1]: https://www.w3.org/TR/SVG/painting.html#FillRuleProperty
- pub rule: FillRule,
-}
-
-impl Default for Fill {
- fn default() -> Self {
- Self {
- style: Style::Solid(Color::BLACK),
- rule: FillRule::NonZero,
- }
- }
-}
-
-impl From<Color> for Fill {
- fn from(color: Color) -> Fill {
- Fill {
- style: Style::Solid(color),
- ..Fill::default()
- }
- }
-}
-
-impl From<Gradient> for Fill {
- fn from(gradient: Gradient) -> Self {
- Fill {
- style: Style::Gradient(gradient),
- ..Default::default()
- }
- }
-}
-
-/// The fill rule defines how to determine what is inside and what is outside of
-/// a shape.
-///
-/// See the [SVG specification][1].
-///
-/// [1]: https://www.w3.org/TR/SVG/painting.html#FillRuleProperty
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-#[allow(missing_docs)]
-pub enum FillRule {
- NonZero,
- EvenOdd,
-}
-
-impl From<FillRule> for lyon::tessellation::FillRule {
- fn from(rule: FillRule) -> lyon::tessellation::FillRule {
- match rule {
- FillRule::NonZero => lyon::tessellation::FillRule::NonZero,
- FillRule::EvenOdd => lyon::tessellation::FillRule::EvenOdd,
- }
- }
-}
diff --git a/graphics/src/widget/canvas/frame.rs b/graphics/src/widget/canvas/frame.rs
deleted file mode 100644
index d68548ae..00000000
--- a/graphics/src/widget/canvas/frame.rs
+++ /dev/null
@@ -1,530 +0,0 @@
-use crate::gradient::Gradient;
-use crate::triangle;
-use crate::widget::canvas::{path, Fill, Geometry, Path, Stroke, Style, Text};
-use crate::Primitive;
-
-use iced_native::{Point, Rectangle, Size, Vector};
-
-use lyon::geom::euclid;
-use lyon::tessellation;
-use std::borrow::Cow;
-
-/// The frame of a [`Canvas`].
-///
-/// [`Canvas`]: crate::widget::Canvas
-#[allow(missing_debug_implementations)]
-pub struct Frame {
- size: Size,
- buffers: BufferStack,
- primitives: Vec<Primitive>,
- transforms: Transforms,
- fill_tessellator: tessellation::FillTessellator,
- stroke_tessellator: tessellation::StrokeTessellator,
-}
-
-enum Buffer {
- Solid(tessellation::VertexBuffers<triangle::ColoredVertex2D, u32>),
- Gradient(
- tessellation::VertexBuffers<triangle::Vertex2D, u32>,
- Gradient,
- ),
-}
-
-struct BufferStack {
- stack: Vec<Buffer>,
-}
-
-impl BufferStack {
- fn new() -> Self {
- Self { stack: Vec::new() }
- }
-
- fn get_mut(&mut self, style: &Style) -> &mut Buffer {
- match style {
- Style::Solid(_) => match self.stack.last() {
- Some(Buffer::Solid(_)) => {}
- _ => {
- self.stack.push(Buffer::Solid(
- tessellation::VertexBuffers::new(),
- ));
- }
- },
- Style::Gradient(gradient) => match self.stack.last() {
- Some(Buffer::Gradient(_, last)) if gradient == last => {}
- _ => {
- self.stack.push(Buffer::Gradient(
- tessellation::VertexBuffers::new(),
- gradient.clone(),
- ));
- }
- },
- }
-
- self.stack.last_mut().unwrap()
- }
-
- fn get_fill<'a>(
- &'a mut self,
- style: &Style,
- ) -> Box<dyn tessellation::FillGeometryBuilder + 'a> {
- match (style, self.get_mut(style)) {
- (Style::Solid(color), Buffer::Solid(buffer)) => {
- Box::new(tessellation::BuffersBuilder::new(
- buffer,
- TriangleVertex2DBuilder(color.into_linear()),
- ))
- }
- (Style::Gradient(_), Buffer::Gradient(buffer, _)) => Box::new(
- tessellation::BuffersBuilder::new(buffer, Vertex2DBuilder),
- ),
- _ => unreachable!(),
- }
- }
-
- fn get_stroke<'a>(
- &'a mut self,
- style: &Style,
- ) -> Box<dyn tessellation::StrokeGeometryBuilder + 'a> {
- match (style, self.get_mut(style)) {
- (Style::Solid(color), Buffer::Solid(buffer)) => {
- Box::new(tessellation::BuffersBuilder::new(
- buffer,
- TriangleVertex2DBuilder(color.into_linear()),
- ))
- }
- (Style::Gradient(_), Buffer::Gradient(buffer, _)) => Box::new(
- tessellation::BuffersBuilder::new(buffer, Vertex2DBuilder),
- ),
- _ => unreachable!(),
- }
- }
-}
-
-#[derive(Debug)]
-struct Transforms {
- previous: Vec<Transform>,
- current: Transform,
-}
-
-#[derive(Debug, Clone, Copy)]
-struct Transform {
- raw: lyon::math::Transform,
- is_identity: bool,
-}
-
-impl Transform {
- /// Transforms the given [Point] by the transformation matrix.
- fn transform_point(&self, point: &mut Point) {
- let transformed = self
- .raw
- .transform_point(euclid::Point2D::new(point.x, point.y));
- point.x = transformed.x;
- point.y = transformed.y;
- }
-
- fn transform_style(&self, style: Style) -> Style {
- match style {
- Style::Solid(color) => Style::Solid(color),
- Style::Gradient(gradient) => {
- Style::Gradient(self.transform_gradient(gradient))
- }
- }
- }
-
- fn transform_gradient(&self, mut gradient: Gradient) -> Gradient {
- let (start, end) = match &mut gradient {
- Gradient::Linear(linear) => (&mut linear.start, &mut linear.end),
- };
- self.transform_point(start);
- self.transform_point(end);
- gradient
- }
-}
-
-impl Frame {
- /// Creates a new empty [`Frame`] with the given dimensions.
- ///
- /// The default coordinate system of a [`Frame`] has its origin at the
- /// top-left corner of its bounds.
- pub fn new(size: Size) -> Frame {
- Frame {
- size,
- buffers: BufferStack::new(),
- primitives: Vec::new(),
- transforms: Transforms {
- previous: Vec::new(),
- current: Transform {
- raw: lyon::math::Transform::identity(),
- is_identity: true,
- },
- },
- fill_tessellator: tessellation::FillTessellator::new(),
- stroke_tessellator: tessellation::StrokeTessellator::new(),
- }
- }
-
- /// Returns the width of the [`Frame`].
- #[inline]
- pub fn width(&self) -> f32 {
- self.size.width
- }
-
- /// Returns the height of the [`Frame`].
- #[inline]
- pub fn height(&self) -> f32 {
- self.size.height
- }
-
- /// Returns the dimensions of the [`Frame`].
- #[inline]
- pub fn size(&self) -> Size {
- self.size
- }
-
- /// Returns the coordinate of the center of the [`Frame`].
- #[inline]
- pub fn center(&self) -> Point {
- Point::new(self.size.width / 2.0, self.size.height / 2.0)
- }
-
- /// Draws the given [`Path`] on the [`Frame`] by filling it with the
- /// provided style.
- pub fn fill(&mut self, path: &Path, fill: impl Into<Fill>) {
- let Fill { style, rule } = fill.into();
-
- let mut buffer = self
- .buffers
- .get_fill(&self.transforms.current.transform_style(style));
-
- let options =
- tessellation::FillOptions::default().with_fill_rule(rule.into());
-
- if self.transforms.current.is_identity {
- self.fill_tessellator.tessellate_path(
- path.raw(),
- &options,
- buffer.as_mut(),
- )
- } else {
- let path = path.transformed(&self.transforms.current.raw);
-
- self.fill_tessellator.tessellate_path(
- path.raw(),
- &options,
- buffer.as_mut(),
- )
- }
- .expect("Tessellate path.");
- }
-
- /// Draws an axis-aligned rectangle given its top-left corner coordinate and
- /// its `Size` on the [`Frame`] by filling it with the provided style.
- pub fn fill_rectangle(
- &mut self,
- top_left: Point,
- size: Size,
- fill: impl Into<Fill>,
- ) {
- let Fill { style, rule } = fill.into();
-
- let mut buffer = self
- .buffers
- .get_fill(&self.transforms.current.transform_style(style));
-
- let top_left =
- self.transforms.current.raw.transform_point(
- lyon::math::Point::new(top_left.x, top_left.y),
- );
-
- let size =
- self.transforms.current.raw.transform_vector(
- lyon::math::Vector::new(size.width, size.height),
- );
-
- let options =
- tessellation::FillOptions::default().with_fill_rule(rule.into());
-
- self.fill_tessellator
- .tessellate_rectangle(
- &lyon::math::Box2D::new(top_left, top_left + size),
- &options,
- buffer.as_mut(),
- )
- .expect("Fill rectangle");
- }
-
- /// Draws the stroke of the given [`Path`] on the [`Frame`] with the
- /// provided style.
- pub fn stroke<'a>(&mut self, path: &Path, stroke: impl Into<Stroke<'a>>) {
- let stroke = stroke.into();
-
- let mut buffer = self
- .buffers
- .get_stroke(&self.transforms.current.transform_style(stroke.style));
-
- let mut options = tessellation::StrokeOptions::default();
- options.line_width = stroke.width;
- options.start_cap = stroke.line_cap.into();
- options.end_cap = stroke.line_cap.into();
- options.line_join = stroke.line_join.into();
-
- let path = if stroke.line_dash.segments.is_empty() {
- Cow::Borrowed(path)
- } else {
- Cow::Owned(path::dashed(path, stroke.line_dash))
- };
-
- if self.transforms.current.is_identity {
- self.stroke_tessellator.tessellate_path(
- path.raw(),
- &options,
- buffer.as_mut(),
- )
- } else {
- let path = path.transformed(&self.transforms.current.raw);
-
- self.stroke_tessellator.tessellate_path(
- path.raw(),
- &options,
- buffer.as_mut(),
- )
- }
- .expect("Stroke path");
- }
-
- /// Draws the characters of the given [`Text`] on the [`Frame`], filling
- /// them with the given color.
- ///
- /// __Warning:__ Text currently does not work well with rotations and scale
- /// transforms! The position will be correctly transformed, but the
- /// resulting glyphs will not be rotated or scaled properly.
- ///
- /// Additionally, all text will be rendered on top of all the layers of
- /// a [`Canvas`]. Therefore, it is currently only meant to be used for
- /// overlays, which is the most common use case.
- ///
- /// Support for vectorial text is planned, and should address all these
- /// limitations.
- ///
- /// [`Canvas`]: crate::widget::Canvas
- pub fn fill_text(&mut self, text: impl Into<Text>) {
- let text = text.into();
-
- let position = if self.transforms.current.is_identity {
- text.position
- } else {
- let transformed = self.transforms.current.raw.transform_point(
- lyon::math::Point::new(text.position.x, text.position.y),
- );
-
- Point::new(transformed.x, transformed.y)
- };
-
- // TODO: Use vectorial text instead of primitive
- self.primitives.push(Primitive::Text {
- content: text.content,
- bounds: Rectangle {
- x: position.x,
- y: position.y,
- width: f32::INFINITY,
- height: f32::INFINITY,
- },
- color: text.color,
- size: text.size,
- font: text.font,
- horizontal_alignment: text.horizontal_alignment,
- vertical_alignment: text.vertical_alignment,
- });
- }
-
- /// Stores the current transform of the [`Frame`] and executes the given
- /// drawing operations, restoring the transform afterwards.
- ///
- /// This method is useful to compose transforms and perform drawing
- /// operations in different coordinate systems.
- #[inline]
- pub fn with_save(&mut self, f: impl FnOnce(&mut Frame)) {
- self.transforms.previous.push(self.transforms.current);
-
- f(self);
-
- self.transforms.current = self.transforms.previous.pop().unwrap();
- }
-
- /// Executes the given drawing operations within a [`Rectangle`] region,
- /// clipping any geometry that overflows its bounds. Any transformations
- /// performed are local to the provided closure.
- ///
- /// This method is useful to perform drawing operations that need to be
- /// clipped.
- #[inline]
- pub fn with_clip(&mut self, region: Rectangle, f: impl FnOnce(&mut Frame)) {
- let mut frame = Frame::new(region.size());
-
- f(&mut frame);
-
- let primitives = frame.into_primitives();
-
- let (text, meshes) = primitives
- .into_iter()
- .partition(|primitive| matches!(primitive, Primitive::Text { .. }));
-
- let translation = Vector::new(region.x, region.y);
-
- self.primitives.push(Primitive::Group {
- primitives: vec![
- Primitive::Translate {
- translation,
- content: Box::new(Primitive::Group { primitives: meshes }),
- },
- Primitive::Translate {
- translation,
- content: Box::new(Primitive::Clip {
- bounds: Rectangle::with_size(region.size()),
- content: Box::new(Primitive::Group {
- primitives: text,
- }),
- }),
- },
- ],
- });
- }
-
- /// Applies a translation to the current transform of the [`Frame`].
- #[inline]
- pub fn translate(&mut self, translation: Vector) {
- self.transforms.current.raw = self
- .transforms
- .current
- .raw
- .pre_translate(lyon::math::Vector::new(
- translation.x,
- translation.y,
- ));
- self.transforms.current.is_identity = false;
- }
-
- /// Applies a rotation in radians to the current transform of the [`Frame`].
- #[inline]
- pub fn rotate(&mut self, angle: f32) {
- self.transforms.current.raw = self
- .transforms
- .current
- .raw
- .pre_rotate(lyon::math::Angle::radians(angle));
- self.transforms.current.is_identity = false;
- }
-
- /// Applies a scaling to the current transform of the [`Frame`].
- #[inline]
- pub fn scale(&mut self, scale: f32) {
- self.transforms.current.raw =
- self.transforms.current.raw.pre_scale(scale, scale);
- self.transforms.current.is_identity = false;
- }
-
- /// Produces the [`Geometry`] representing everything drawn on the [`Frame`].
- pub fn into_geometry(self) -> Geometry {
- Geometry::from_primitive(Primitive::Group {
- primitives: self.into_primitives(),
- })
- }
-
- fn into_primitives(mut self) -> Vec<Primitive> {
- for buffer in self.buffers.stack {
- match buffer {
- Buffer::Solid(buffer) => {
- if !buffer.indices.is_empty() {
- self.primitives.push(Primitive::SolidMesh {
- buffers: triangle::Mesh2D {
- vertices: buffer.vertices,
- indices: buffer.indices,
- },
- size: self.size,
- })
- }
- }
- Buffer::Gradient(buffer, gradient) => {
- if !buffer.indices.is_empty() {
- self.primitives.push(Primitive::GradientMesh {
- buffers: triangle::Mesh2D {
- vertices: buffer.vertices,
- indices: buffer.indices,
- },
- size: self.size,
- gradient,
- })
- }
- }
- }
- }
-
- self.primitives
- }
-}
-
-struct Vertex2DBuilder;
-
-impl tessellation::FillVertexConstructor<triangle::Vertex2D>
- for Vertex2DBuilder
-{
- fn new_vertex(
- &mut self,
- vertex: tessellation::FillVertex<'_>,
- ) -> triangle::Vertex2D {
- let position = vertex.position();
-
- triangle::Vertex2D {
- position: [position.x, position.y],
- }
- }
-}
-
-impl tessellation::StrokeVertexConstructor<triangle::Vertex2D>
- for Vertex2DBuilder
-{
- fn new_vertex(
- &mut self,
- vertex: tessellation::StrokeVertex<'_, '_>,
- ) -> triangle::Vertex2D {
- let position = vertex.position();
-
- triangle::Vertex2D {
- position: [position.x, position.y],
- }
- }
-}
-
-struct TriangleVertex2DBuilder([f32; 4]);
-
-impl tessellation::FillVertexConstructor<triangle::ColoredVertex2D>
- for TriangleVertex2DBuilder
-{
- fn new_vertex(
- &mut self,
- vertex: tessellation::FillVertex<'_>,
- ) -> triangle::ColoredVertex2D {
- let position = vertex.position();
-
- triangle::ColoredVertex2D {
- position: [position.x, position.y],
- color: self.0,
- }
- }
-}
-
-impl tessellation::StrokeVertexConstructor<triangle::ColoredVertex2D>
- for TriangleVertex2DBuilder
-{
- fn new_vertex(
- &mut self,
- vertex: tessellation::StrokeVertex<'_, '_>,
- ) -> triangle::ColoredVertex2D {
- let position = vertex.position();
-
- triangle::ColoredVertex2D {
- position: [position.x, position.y],
- color: self.0,
- }
- }
-}
diff --git a/graphics/src/widget/canvas/geometry.rs b/graphics/src/widget/canvas/geometry.rs
deleted file mode 100644
index e8ac621d..00000000
--- a/graphics/src/widget/canvas/geometry.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-use crate::Primitive;
-
-/// A bunch of shapes that can be drawn.
-///
-/// [`Geometry`] can be easily generated with a [`Frame`] or stored in a
-/// [`Cache`].
-///
-/// [`Frame`]: crate::widget::canvas::Frame
-/// [`Cache`]: crate::widget::canvas::Cache
-#[derive(Debug, Clone)]
-pub struct Geometry(Primitive);
-
-impl Geometry {
- pub(crate) fn from_primitive(primitive: Primitive) -> Self {
- Self(primitive)
- }
-
- /// Turns the [`Geometry`] into a [`Primitive`].
- ///
- /// This can be useful if you are building a custom widget.
- pub fn into_primitive(self) -> Primitive {
- self.0
- }
-}
diff --git a/graphics/src/widget/canvas/path.rs b/graphics/src/widget/canvas/path.rs
deleted file mode 100644
index aeb2589e..00000000
--- a/graphics/src/widget/canvas/path.rs
+++ /dev/null
@@ -1,109 +0,0 @@
-//! Build different kinds of 2D shapes.
-pub mod arc;
-
-mod builder;
-
-#[doc(no_inline)]
-pub use arc::Arc;
-pub use builder::Builder;
-
-use crate::widget::canvas::LineDash;
-
-use iced_native::{Point, Size};
-use lyon::algorithms::walk::{walk_along_path, RepeatedPattern, WalkerEvent};
-use lyon::path::iterator::PathIterator;
-
-/// An immutable set of points that may or may not be connected.
-///
-/// A single [`Path`] can represent different kinds of 2D shapes!
-#[derive(Debug, Clone)]
-pub struct Path {
- raw: lyon::path::Path,
-}
-
-impl Path {
- /// Creates a new [`Path`] with the provided closure.
- ///
- /// Use the [`Builder`] to configure your [`Path`].
- pub fn new(f: impl FnOnce(&mut Builder)) -> Self {
- let mut builder = Builder::new();
-
- // TODO: Make it pure instead of side-effect-based (?)
- f(&mut builder);
-
- builder.build()
- }
-
- /// Creates a new [`Path`] representing a line segment given its starting
- /// and end points.
- pub fn line(from: Point, to: Point) -> Self {
- Self::new(|p| {
- p.move_to(from);
- p.line_to(to);
- })
- }
-
- /// Creates a new [`Path`] representing a rectangle given its top-left
- /// corner coordinate and its `Size`.
- pub fn rectangle(top_left: Point, size: Size) -> Self {
- Self::new(|p| p.rectangle(top_left, size))
- }
-
- /// Creates a new [`Path`] representing a circle given its center
- /// coordinate and its radius.
- pub fn circle(center: Point, radius: f32) -> Self {
- Self::new(|p| p.circle(center, radius))
- }
-
- #[inline]
- pub(crate) fn raw(&self) -> &lyon::path::Path {
- &self.raw
- }
-
- #[inline]
- pub(crate) fn transformed(
- &self,
- transform: &lyon::math::Transform,
- ) -> Path {
- Path {
- raw: self.raw.clone().transformed(transform),
- }
- }
-}
-
-pub(super) fn dashed(path: &Path, line_dash: LineDash<'_>) -> Path {
- Path::new(|builder| {
- let segments_odd = (line_dash.segments.len() % 2 == 1)
- .then(|| [line_dash.segments, line_dash.segments].concat());
-
- let mut draw_line = false;
-
- walk_along_path(
- path.raw().iter().flattened(0.01),
- 0.0,
- lyon::tessellation::StrokeOptions::DEFAULT_TOLERANCE,
- &mut RepeatedPattern {
- callback: |event: WalkerEvent<'_>| {
- let point = Point {
- x: event.position.x,
- y: event.position.y,
- };
-
- if draw_line {
- builder.line_to(point);
- } else {
- builder.move_to(point);
- }
-
- draw_line = !draw_line;
-
- true
- },
- index: line_dash.offset,
- intervals: segments_odd
- .as_deref()
- .unwrap_or(line_dash.segments),
- },
- );
- })
-}
diff --git a/graphics/src/widget/canvas/path/arc.rs b/graphics/src/widget/canvas/path/arc.rs
deleted file mode 100644
index b8e72daf..00000000
--- a/graphics/src/widget/canvas/path/arc.rs
+++ /dev/null
@@ -1,42 +0,0 @@
-//! Build and draw curves.
-use iced_native::{Point, Vector};
-
-/// A segment of a differentiable curve.
-#[derive(Debug, Clone, Copy)]
-pub struct Arc {
- /// The center of the arc.
- pub center: Point,
- /// The radius of the arc.
- pub radius: f32,
- /// The start of the segment's angle, clockwise rotation.
- pub start_angle: f32,
- /// The end of the segment's angle, clockwise rotation.
- pub end_angle: f32,
-}
-
-/// An elliptical [`Arc`].
-#[derive(Debug, Clone, Copy)]
-pub struct Elliptical {
- /// The center of the arc.
- pub center: Point,
- /// The radii of the arc's ellipse, defining its axes.
- pub radii: Vector,
- /// The rotation of the arc's ellipse.
- pub rotation: f32,
- /// The start of the segment's angle, clockwise rotation.
- pub start_angle: f32,
- /// The end of the segment's angle, clockwise rotation.
- pub end_angle: f32,
-}
-
-impl From<Arc> for Elliptical {
- fn from(arc: Arc) -> Elliptical {
- Elliptical {
- center: arc.center,
- radii: Vector::new(arc.radius, arc.radius),
- rotation: 0.0,
- start_angle: arc.start_angle,
- end_angle: arc.end_angle,
- }
- }
-}
diff --git a/graphics/src/widget/canvas/path/builder.rs b/graphics/src/widget/canvas/path/builder.rs
deleted file mode 100644
index 5121aa68..00000000
--- a/graphics/src/widget/canvas/path/builder.rs
+++ /dev/null
@@ -1,198 +0,0 @@
-use crate::widget::canvas::path::{arc, Arc, Path};
-
-use iced_native::{Point, Size};
-use lyon::path::builder::SvgPathBuilder;
-
-/// A [`Path`] builder.
-///
-/// Once a [`Path`] is built, it can no longer be mutated.
-#[allow(missing_debug_implementations)]
-pub struct Builder {
- raw: lyon::path::builder::WithSvg<lyon::path::path::BuilderImpl>,
-}
-
-impl Builder {
- /// Creates a new [`Builder`].
- pub fn new() -> Builder {
- Builder {
- raw: lyon::path::Path::builder().with_svg(),
- }
- }
-
- /// Moves the starting point of a new sub-path to the given `Point`.
- #[inline]
- pub fn move_to(&mut self, point: Point) {
- let _ = self.raw.move_to(lyon::math::Point::new(point.x, point.y));
- }
-
- /// Connects the last point in the [`Path`] to the given `Point` with a
- /// straight line.
- #[inline]
- pub fn line_to(&mut self, point: Point) {
- let _ = self.raw.line_to(lyon::math::Point::new(point.x, point.y));
- }
-
- /// Adds an [`Arc`] to the [`Path`] from `start_angle` to `end_angle` in
- /// a clockwise direction.
- #[inline]
- pub fn arc(&mut self, arc: Arc) {
- self.ellipse(arc.into());
- }
-
- /// Adds a circular arc to the [`Path`] with the given control points and
- /// radius.
- ///
- /// This essentially draws a straight line segment from the current
- /// position to `a`, but fits a circular arc of `radius` tangent to that
- /// segment and tangent to the line between `a` and `b`.
- ///
- /// With another `.line_to(b)`, the result will be a path connecting the
- /// starting point and `b` with straight line segments towards `a` and a
- /// circular arc smoothing out the corner at `a`.
- ///
- /// See [the HTML5 specification of `arcTo`](https://html.spec.whatwg.org/multipage/canvas.html#building-paths:dom-context-2d-arcto)
- /// for more details and examples.
- pub fn arc_to(&mut self, a: Point, b: Point, radius: f32) {
- use lyon::{math, path};
-
- let start = self.raw.current_position();
- let mid = math::Point::new(a.x, a.y);
- let end = math::Point::new(b.x, b.y);
-
- if start == mid || mid == end || radius == 0.0 {
- let _ = self.raw.line_to(mid);
- return;
- }
-
- let double_area = start.x * (mid.y - end.y)
- + mid.x * (end.y - start.y)
- + end.x * (start.y - mid.y);
-
- if double_area == 0.0 {
- let _ = self.raw.line_to(mid);
- return;
- }
-
- let to_start = (start - mid).normalize();
- let to_end = (end - mid).normalize();
-
- let inner_angle = to_start.dot(to_end).acos();
-
- let origin_angle = inner_angle / 2.0;
-
- let origin_adjacent = radius / origin_angle.tan();
-
- let arc_start = mid + to_start * origin_adjacent;
- let arc_end = mid + to_end * origin_adjacent;
-
- let sweep = to_start.cross(to_end) < 0.0;
-
- let _ = self.raw.line_to(arc_start);
-
- self.raw.arc_to(
- math::Vector::new(radius, radius),
- math::Angle::radians(0.0),
- path::ArcFlags {
- large_arc: false,
- sweep,
- },
- arc_end,
- );
- }
-
- /// Adds an ellipse to the [`Path`] using a clockwise direction.
- pub fn ellipse(&mut self, arc: arc::Elliptical) {
- use lyon::{geom, math};
-
- let arc = geom::Arc {
- center: math::Point::new(arc.center.x, arc.center.y),
- radii: math::Vector::new(arc.radii.x, arc.radii.y),
- x_rotation: math::Angle::radians(arc.rotation),
- start_angle: math::Angle::radians(arc.start_angle),
- sweep_angle: math::Angle::radians(arc.end_angle - arc.start_angle),
- };
-
- let _ = self.raw.move_to(arc.sample(0.0));
-
- arc.for_each_quadratic_bezier(&mut |curve| {
- let _ = self.raw.quadratic_bezier_to(curve.ctrl, curve.to);
- });
- }
-
- /// Adds a cubic Bézier curve to the [`Path`] given its two control points
- /// and its end point.
- #[inline]
- pub fn bezier_curve_to(
- &mut self,
- control_a: Point,
- control_b: Point,
- to: Point,
- ) {
- use lyon::math;
-
- let _ = self.raw.cubic_bezier_to(
- math::Point::new(control_a.x, control_a.y),
- math::Point::new(control_b.x, control_b.y),
- math::Point::new(to.x, to.y),
- );
- }
-
- /// Adds a quadratic Bézier curve to the [`Path`] given its control point
- /// and its end point.
- #[inline]
- pub fn quadratic_curve_to(&mut self, control: Point, to: Point) {
- use lyon::math;
-
- let _ = self.raw.quadratic_bezier_to(
- math::Point::new(control.x, control.y),
- math::Point::new(to.x, to.y),
- );
- }
-
- /// Adds a rectangle to the [`Path`] given its top-left corner coordinate
- /// and its `Size`.
- #[inline]
- pub fn rectangle(&mut self, top_left: Point, size: Size) {
- self.move_to(top_left);
- self.line_to(Point::new(top_left.x + size.width, top_left.y));
- self.line_to(Point::new(
- top_left.x + size.width,
- top_left.y + size.height,
- ));
- self.line_to(Point::new(top_left.x, top_left.y + size.height));
- self.close();
- }
-
- /// Adds a circle to the [`Path`] given its center coordinate and its
- /// radius.
- #[inline]
- pub fn circle(&mut self, center: Point, radius: f32) {
- self.arc(Arc {
- center,
- radius,
- start_angle: 0.0,
- end_angle: 2.0 * std::f32::consts::PI,
- });
- }
-
- /// Closes the current sub-path in the [`Path`] with a straight line to
- /// the starting point.
- #[inline]
- pub fn close(&mut self) {
- self.raw.close()
- }
-
- /// Builds the [`Path`] of this [`Builder`].
- #[inline]
- pub fn build(self) -> Path {
- Path {
- raw: self.raw.build(),
- }
- }
-}
-
-impl Default for Builder {
- fn default() -> Self {
- Self::new()
- }
-}
diff --git a/graphics/src/widget/canvas/program.rs b/graphics/src/widget/canvas/program.rs
deleted file mode 100644
index 656dbfa6..00000000
--- a/graphics/src/widget/canvas/program.rs
+++ /dev/null
@@ -1,102 +0,0 @@
-use crate::widget::canvas::event::{self, Event};
-use crate::widget::canvas::mouse;
-use crate::widget::canvas::{Cursor, Geometry};
-use crate::Rectangle;
-
-/// The state and logic of a [`Canvas`].
-///
-/// A [`Program`] can mutate internal state and produce messages for an
-/// application.
-///
-/// [`Canvas`]: crate::widget::Canvas
-pub trait Program<Message, Theme = iced_native::Theme> {
- /// The internal state mutated by the [`Program`].
- type State: Default + 'static;
-
- /// Updates the [`State`](Self::State) of the [`Program`].
- ///
- /// When a [`Program`] is used in a [`Canvas`], the runtime will call this
- /// method for each [`Event`].
- ///
- /// This method can optionally return a `Message` to notify an application
- /// of any meaningful interactions.
- ///
- /// By default, this method does and returns nothing.
- ///
- /// [`Canvas`]: crate::widget::Canvas
- fn update(
- &self,
- _state: &mut Self::State,
- _event: Event,
- _bounds: Rectangle,
- _cursor: Cursor,
- ) -> (event::Status, Option<Message>) {
- (event::Status::Ignored, None)
- }
-
- /// Draws the state of the [`Program`], producing a bunch of [`Geometry`].
- ///
- /// [`Geometry`] can be easily generated with a [`Frame`] or stored in a
- /// [`Cache`].
- ///
- /// [`Frame`]: crate::widget::canvas::Frame
- /// [`Cache`]: crate::widget::canvas::Cache
- fn draw(
- &self,
- state: &Self::State,
- theme: &Theme,
- bounds: Rectangle,
- cursor: Cursor,
- ) -> Vec<Geometry>;
-
- /// Returns the current mouse interaction of the [`Program`].
- ///
- /// The interaction returned will be in effect even if the cursor position
- /// is out of bounds of the program's [`Canvas`].
- ///
- /// [`Canvas`]: crate::widget::Canvas
- fn mouse_interaction(
- &self,
- _state: &Self::State,
- _bounds: Rectangle,
- _cursor: Cursor,
- ) -> mouse::Interaction {
- mouse::Interaction::default()
- }
-}
-
-impl<Message, Theme, T> Program<Message, Theme> for &T
-where
- T: Program<Message, Theme>,
-{
- type State = T::State;
-
- fn update(
- &self,
- state: &mut Self::State,
- event: Event,
- bounds: Rectangle,
- cursor: Cursor,
- ) -> (event::Status, Option<Message>) {
- T::update(self, state, event, bounds, cursor)
- }
-
- fn draw(
- &self,
- state: &Self::State,
- theme: &Theme,
- bounds: Rectangle,
- cursor: Cursor,
- ) -> Vec<Geometry> {
- T::draw(self, state, theme, bounds, cursor)
- }
-
- fn mouse_interaction(
- &self,
- state: &Self::State,
- bounds: Rectangle,
- cursor: Cursor,
- ) -> mouse::Interaction {
- T::mouse_interaction(self, state, bounds, cursor)
- }
-}
diff --git a/graphics/src/widget/canvas/stroke.rs b/graphics/src/widget/canvas/stroke.rs
deleted file mode 100644
index 4c19251d..00000000
--- a/graphics/src/widget/canvas/stroke.rs
+++ /dev/null
@@ -1,126 +0,0 @@
-//! Create lines from a [crate::widget::canvas::Path] and assigns them various attributes/styles.
-pub use crate::widget::canvas::Style;
-
-use iced_native::Color;
-
-/// The style of a stroke.
-#[derive(Debug, Clone)]
-pub struct Stroke<'a> {
- /// The color or gradient of the stroke.
- ///
- /// By default, it is set to a [`Style::Solid`] with [`Color::BLACK`].
- pub style: Style,
- /// The distance between the two edges of the stroke.
- pub width: f32,
- /// The shape to be used at the end of open subpaths when they are stroked.
- pub line_cap: LineCap,
- /// The shape to be used at the corners of paths or basic shapes when they
- /// are stroked.
- pub line_join: LineJoin,
- /// The dash pattern used when stroking the line.
- pub line_dash: LineDash<'a>,
-}
-
-impl<'a> Stroke<'a> {
- /// Sets the color of the [`Stroke`].
- pub fn with_color(self, color: Color) -> Self {
- Stroke {
- style: Style::Solid(color),
- ..self
- }
- }
-
- /// Sets the width of the [`Stroke`].
- pub fn with_width(self, width: f32) -> Self {
- Stroke { width, ..self }
- }
-
- /// Sets the [`LineCap`] of the [`Stroke`].
- pub fn with_line_cap(self, line_cap: LineCap) -> Self {
- Stroke { line_cap, ..self }
- }
-
- /// Sets the [`LineJoin`] of the [`Stroke`].
- pub fn with_line_join(self, line_join: LineJoin) -> Self {
- Stroke { line_join, ..self }
- }
-}
-
-impl<'a> Default for Stroke<'a> {
- fn default() -> Self {
- Stroke {
- style: Style::Solid(Color::BLACK),
- width: 1.0,
- line_cap: LineCap::default(),
- line_join: LineJoin::default(),
- line_dash: LineDash::default(),
- }
- }
-}
-
-/// The shape used at the end of open subpaths when they are stroked.
-#[derive(Debug, Clone, Copy)]
-pub enum LineCap {
- /// The stroke for each sub-path does not extend beyond its two endpoints.
- Butt,
- /// At the end of each sub-path, the shape representing the stroke will be
- /// extended by a square.
- Square,
- /// At the end of each sub-path, the shape representing the stroke will be
- /// extended by a semicircle.
- Round,
-}
-
-impl Default for LineCap {
- fn default() -> LineCap {
- LineCap::Butt
- }
-}
-
-impl From<LineCap> for lyon::tessellation::LineCap {
- fn from(line_cap: LineCap) -> lyon::tessellation::LineCap {
- match line_cap {
- LineCap::Butt => lyon::tessellation::LineCap::Butt,
- LineCap::Square => lyon::tessellation::LineCap::Square,
- LineCap::Round => lyon::tessellation::LineCap::Round,
- }
- }
-}
-
-/// The shape used at the corners of paths or basic shapes when they are
-/// stroked.
-#[derive(Debug, Clone, Copy)]
-pub enum LineJoin {
- /// A sharp corner.
- Miter,
- /// A round corner.
- Round,
- /// A bevelled corner.
- Bevel,
-}
-
-impl Default for LineJoin {
- fn default() -> LineJoin {
- LineJoin::Miter
- }
-}
-
-impl From<LineJoin> for lyon::tessellation::LineJoin {
- fn from(line_join: LineJoin) -> lyon::tessellation::LineJoin {
- match line_join {
- LineJoin::Miter => lyon::tessellation::LineJoin::Miter,
- LineJoin::Round => lyon::tessellation::LineJoin::Round,
- LineJoin::Bevel => lyon::tessellation::LineJoin::Bevel,
- }
- }
-}
-
-/// The dash pattern used when stroking the line.
-#[derive(Debug, Clone, Copy, Default)]
-pub struct LineDash<'a> {
- /// The alternating lengths of lines and gaps which describe the pattern.
- pub segments: &'a [f32],
-
- /// The offset of [`LineDash::segments`] to start the pattern.
- pub offset: usize,
-}
diff --git a/graphics/src/widget/canvas/style.rs b/graphics/src/widget/canvas/style.rs
deleted file mode 100644
index 6794f2e7..00000000
--- a/graphics/src/widget/canvas/style.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-use crate::{Color, Gradient};
-
-/// The coloring style of some drawing.
-#[derive(Debug, Clone, PartialEq)]
-pub enum Style {
- /// A solid [`Color`].
- Solid(Color),
-
- /// A [`Gradient`] color.
- Gradient(Gradient),
-}
-
-impl From<Color> for Style {
- fn from(color: Color) -> Self {
- Self::Solid(color)
- }
-}
-
-impl From<Gradient> for Style {
- fn from(gradient: Gradient) -> Self {
- Self::Gradient(gradient)
- }
-}
diff --git a/graphics/src/widget/canvas/text.rs b/graphics/src/widget/canvas/text.rs
deleted file mode 100644
index 8c0b2dfb..00000000
--- a/graphics/src/widget/canvas/text.rs
+++ /dev/null
@@ -1,57 +0,0 @@
-use crate::alignment;
-use crate::{Color, Font, Point};
-
-/// A bunch of text that can be drawn to a canvas
-#[derive(Debug, Clone)]
-pub struct Text {
- /// The contents of the text
- pub content: String,
- /// The position of the text relative to the alignment properties.
- /// By default, this position will be relative to the top-left corner coordinate meaning that
- /// if the horizontal and vertical alignments are unchanged, this property will tell where the
- /// top-left corner of the text should be placed.
- /// By changing the horizontal_alignment and vertical_alignment properties, you are are able to
- /// change what part of text is placed at this positions.
- /// For example, when the horizontal_alignment and vertical_alignment are set to Center, the
- /// center of the text will be placed at the given position NOT the top-left coordinate.
- pub position: Point,
- /// The color of the text
- pub color: Color,
- /// The size of the text
- pub size: f32,
- /// The font of the text
- pub font: Font,
- /// The horizontal alignment of the text
- pub horizontal_alignment: alignment::Horizontal,
- /// The vertical alignment of the text
- pub vertical_alignment: alignment::Vertical,
-}
-
-impl Default for Text {
- fn default() -> Text {
- Text {
- content: String::new(),
- position: Point::ORIGIN,
- color: Color::BLACK,
- size: 16.0,
- font: Font::SansSerif,
- horizontal_alignment: alignment::Horizontal::Left,
- vertical_alignment: alignment::Vertical::Top,
- }
- }
-}
-
-impl From<String> for Text {
- fn from(content: String) -> Text {
- Text {
- content,
- ..Default::default()
- }
- }
-}
-
-impl From<&str> for Text {
- fn from(content: &str) -> Text {
- String::from(content).into()
- }
-}
diff --git a/graphics/src/widget/qr_code.rs b/graphics/src/widget/qr_code.rs
deleted file mode 100644
index 12ce5b1f..00000000
--- a/graphics/src/widget/qr_code.rs
+++ /dev/null
@@ -1,301 +0,0 @@
-//! Encode and display information in a QR code.
-use crate::renderer::{self, Renderer};
-use crate::widget::canvas;
-use crate::Backend;
-
-use iced_native::layout;
-use iced_native::widget::Tree;
-use iced_native::{
- Color, Element, Layout, Length, Point, Rectangle, Size, Vector, Widget,
-};
-use thiserror::Error;
-
-const DEFAULT_CELL_SIZE: u16 = 4;
-const QUIET_ZONE: usize = 2;
-
-/// A type of matrix barcode consisting of squares arranged in a grid which
-/// can be read by an imaging device, such as a camera.
-#[derive(Debug)]
-pub struct QRCode<'a> {
- state: &'a State,
- dark: Color,
- light: Color,
- cell_size: u16,
-}
-
-impl<'a> QRCode<'a> {
- /// Creates a new [`QRCode`] with the provided [`State`].
- pub fn new(state: &'a State) -> Self {
- Self {
- cell_size: DEFAULT_CELL_SIZE,
- dark: Color::BLACK,
- light: Color::WHITE,
- state,
- }
- }
-
- /// Sets both the dark and light [`Color`]s of the [`QRCode`].
- pub fn color(mut self, dark: Color, light: Color) -> Self {
- self.dark = dark;
- self.light = light;
- self
- }
-
- /// Sets the size of the squares of the grid cell of the [`QRCode`].
- pub fn cell_size(mut self, cell_size: u16) -> Self {
- self.cell_size = cell_size;
- self
- }
-}
-
-impl<'a, Message, B, T> Widget<Message, Renderer<B, T>> for QRCode<'a>
-where
- B: Backend,
-{
- fn width(&self) -> Length {
- Length::Shrink
- }
-
- fn height(&self) -> Length {
- Length::Shrink
- }
-
- fn layout(
- &self,
- _renderer: &Renderer<B, T>,
- _limits: &layout::Limits,
- ) -> layout::Node {
- let side_length = (self.state.width + 2 * QUIET_ZONE) as f32
- * f32::from(self.cell_size);
-
- layout::Node::new(Size::new(side_length, side_length))
- }
-
- fn draw(
- &self,
- _state: &Tree,
- renderer: &mut Renderer<B, T>,
- _theme: &T,
- _style: &renderer::Style,
- layout: Layout<'_>,
- _cursor_position: Point,
- _viewport: &Rectangle,
- ) {
- use iced_native::Renderer as _;
-
- let bounds = layout.bounds();
- let side_length = self.state.width + 2 * QUIET_ZONE;
-
- // Reuse cache if possible
- let geometry = self.state.cache.draw(bounds.size(), |frame| {
- // Scale units to cell size
- frame.scale(f32::from(self.cell_size));
-
- // Draw background
- frame.fill_rectangle(
- Point::ORIGIN,
- Size::new(side_length as f32, side_length as f32),
- self.light,
- );
-
- // Avoid drawing on the quiet zone
- frame.translate(Vector::new(QUIET_ZONE as f32, QUIET_ZONE as f32));
-
- // Draw contents
- self.state
- .contents
- .iter()
- .enumerate()
- .filter(|(_, value)| **value == qrcode::Color::Dark)
- .for_each(|(index, _)| {
- let row = index / self.state.width;
- let column = index % self.state.width;
-
- frame.fill_rectangle(
- Point::new(column as f32, row as f32),
- Size::UNIT,
- self.dark,
- );
- });
- });
-
- let translation = Vector::new(bounds.x, bounds.y);
-
- renderer.with_translation(translation, |renderer| {
- renderer.draw_primitive(geometry.into_primitive());
- });
- }
-}
-
-impl<'a, Message, B, T> From<QRCode<'a>>
- for Element<'a, Message, Renderer<B, T>>
-where
- B: Backend,
-{
- fn from(qr_code: QRCode<'a>) -> Self {
- Self::new(qr_code)
- }
-}
-
-/// The state of a [`QRCode`].
-///
-/// It stores the data that will be displayed.
-#[derive(Debug)]
-pub struct State {
- contents: Vec<qrcode::Color>,
- width: usize,
- cache: canvas::Cache,
-}
-
-impl State {
- /// Creates a new [`State`] with the provided data.
- ///
- /// This method uses an [`ErrorCorrection::Medium`] and chooses the smallest
- /// size to display the data.
- pub fn new(data: impl AsRef<[u8]>) -> Result<Self, Error> {
- let encoded = qrcode::QrCode::new(data)?;
-
- Ok(Self::build(encoded))
- }
-
- /// Creates a new [`State`] with the provided [`ErrorCorrection`].
- pub fn with_error_correction(
- data: impl AsRef<[u8]>,
- error_correction: ErrorCorrection,
- ) -> Result<Self, Error> {
- let encoded = qrcode::QrCode::with_error_correction_level(
- data,
- error_correction.into(),
- )?;
-
- Ok(Self::build(encoded))
- }
-
- /// Creates a new [`State`] with the provided [`Version`] and
- /// [`ErrorCorrection`].
- pub fn with_version(
- data: impl AsRef<[u8]>,
- version: Version,
- error_correction: ErrorCorrection,
- ) -> Result<Self, Error> {
- let encoded = qrcode::QrCode::with_version(
- data,
- version.into(),
- error_correction.into(),
- )?;
-
- Ok(Self::build(encoded))
- }
-
- fn build(encoded: qrcode::QrCode) -> Self {
- let width = encoded.width();
- let contents = encoded.into_colors();
-
- Self {
- contents,
- width,
- cache: canvas::Cache::new(),
- }
- }
-}
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-/// The size of a [`QRCode`].
-///
-/// The higher the version the larger the grid of cells, and therefore the more
-/// information the [`QRCode`] can carry.
-pub enum Version {
- /// A normal QR code version. It should be between 1 and 40.
- Normal(u8),
-
- /// A micro QR code version. It should be between 1 and 4.
- Micro(u8),
-}
-
-impl From<Version> for qrcode::Version {
- fn from(version: Version) -> Self {
- match version {
- Version::Normal(v) => qrcode::Version::Normal(i16::from(v)),
- Version::Micro(v) => qrcode::Version::Micro(i16::from(v)),
- }
- }
-}
-
-/// The error correction level.
-///
-/// It controls the amount of data that can be damaged while still being able
-/// to recover the original information.
-///
-/// A higher error correction level allows for more corrupted data.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum ErrorCorrection {
- /// Low error correction. 7% of the data can be restored.
- Low,
- /// Medium error correction. 15% of the data can be restored.
- Medium,
- /// Quartile error correction. 25% of the data can be restored.
- Quartile,
- /// High error correction. 30% of the data can be restored.
- High,
-}
-
-impl From<ErrorCorrection> for qrcode::EcLevel {
- fn from(ec_level: ErrorCorrection) -> Self {
- match ec_level {
- ErrorCorrection::Low => qrcode::EcLevel::L,
- ErrorCorrection::Medium => qrcode::EcLevel::M,
- ErrorCorrection::Quartile => qrcode::EcLevel::Q,
- ErrorCorrection::High => qrcode::EcLevel::H,
- }
- }
-}
-
-/// An error that occurred when building a [`State`] for a [`QRCode`].
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Error)]
-pub enum Error {
- /// The data is too long to encode in a QR code for the chosen [`Version`].
- #[error(
- "The data is too long to encode in a QR code for the chosen version"
- )]
- DataTooLong,
-
- /// The chosen [`Version`] and [`ErrorCorrection`] combination is invalid.
- #[error(
- "The chosen version and error correction level combination is invalid."
- )]
- InvalidVersion,
-
- /// One or more characters in the provided data are not supported by the
- /// chosen [`Version`].
- #[error(
- "One or more characters in the provided data are not supported by the \
- chosen version"
- )]
- UnsupportedCharacterSet,
-
- /// The chosen ECI designator is invalid. A valid designator should be
- /// between 0 and 999999.
- #[error(
- "The chosen ECI designator is invalid. A valid designator should be \
- between 0 and 999999."
- )]
- InvalidEciDesignator,
-
- /// A character that does not belong to the character set was found.
- #[error("A character that does not belong to the character set was found")]
- InvalidCharacter,
-}
-
-impl From<qrcode::types::QrError> for Error {
- fn from(error: qrcode::types::QrError) -> Self {
- use qrcode::types::QrError;
-
- match error {
- QrError::DataTooLong => Error::DataTooLong,
- QrError::InvalidVersion => Error::InvalidVersion,
- QrError::UnsupportedCharacterSet => Error::UnsupportedCharacterSet,
- QrError::InvalidEciDesignator => Error::InvalidEciDesignator,
- QrError::InvalidCharacter => Error::InvalidCharacter,
- }
- }
-}