Move `Canvas` and `QRCode` to `iced` crate

Rename `canvas` modules to `geometry` in graphics subcrates

6 files changed, 735 insertions, 4 deletions

diff --git a/src/widget.rs b/src/widget.rs
index f3a66101..19434e84 100644
--- a/src/widget.rs
+++ b/src/widget.rs
@@ -165,14 +165,14 @@ pub use vertical_slider::VerticalSlider;
 
 #[cfg(feature = "canvas")]
 #[cfg_attr(docsrs, doc(cfg(feature = "canvas")))]
-pub use iced_renderer::widget::canvas;
+pub mod canvas;
 
 #[cfg(feature = "canvas")]
 #[cfg_attr(docsrs, doc(cfg(feature = "canvas")))]
 /// Creates a new [`Canvas`].
-pub fn canvas<P, Message, Renderer>(program: P) -> Canvas<Message, Renderer, P>
+pub fn canvas<P, Message, Renderer>(program: P) -> Canvas<P, Message, Renderer>
 where
-    Renderer: canvas::Renderer,
+    Renderer: iced_renderer::geometry::Renderer,
     P: canvas::Program<Message, Renderer>,
 {
     Canvas::new(program)
@@ -193,7 +193,7 @@ pub mod image {
 
 #[cfg(feature = "qr_code")]
 #[cfg_attr(docsrs, doc(cfg(feature = "qr_code")))]
-pub use iced_renderer::widget::qr_code;
+pub mod qr_code;
 
 #[cfg(feature = "svg")]
 #[cfg_attr(docsrs, doc(cfg(feature = "svg")))]
diff --git a/src/widget/canvas.rs b/src/widget/canvas.rs
new file mode 100644
index 00000000..bc5995c6
--- /dev/null
+++ b/src/widget/canvas.rs
@@ -0,0 +1,238 @@
+//! Draw 2D graphics for your users.
+pub mod event;
+
+mod cursor;
+mod program;
+
+pub use cursor::Cursor;
+pub use event::Event;
+pub use program::Program;
+
+pub use iced_renderer::geometry::*;
+
+use crate::{Length, Point, Rectangle, Size, Vector};
+
+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, Shell, 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
+/// use iced::widget::canvas::{self, Canvas, Cursor, Fill, Frame, Geometry, Path, Program};
+/// use iced::{Color, Rectangle, Theme, Renderer};
+///
+/// // 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: &(), renderer: &Renderer, _theme: &Theme, bounds: Rectangle, _cursor: Cursor) -> Vec<Geometry>{
+///         // We prepare a new `Frame`
+///         let mut frame = Frame::new(renderer, 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<P, Message, Renderer = crate::Renderer>
+where
+    Renderer: iced_renderer::geometry::Renderer,
+    P: Program<Message, Renderer>,
+{
+    width: Length,
+    height: Length,
+    program: P,
+    message_: PhantomData<Message>,
+    theme_: PhantomData<Renderer>,
+}
+
+impl<P, Message, Renderer> Canvas<P, Message, Renderer>
+where
+    Renderer: iced_renderer::geometry::Renderer,
+    P: Program<Message, Renderer>,
+{
+    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<P, Message, Renderer> Widget<Message, Renderer>
+    for Canvas<P, Message, Renderer>
+where
+    Renderer: iced_renderer::geometry::Renderer,
+    P: Program<Message, Renderer>,
+{
+    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,
+        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,
+        _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,
+    ) -> 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,
+        theme: &Renderer::Theme,
+        _style: &renderer::Style,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        _viewport: &Rectangle,
+    ) {
+        let bounds = layout.bounds();
+
+        if bounds.width < 1.0 || bounds.height < 1.0 {
+            return;
+        }
+
+        let cursor = Cursor::from_window_position(cursor_position);
+        let state = tree.state.downcast_ref::<P::State>();
+
+        renderer.with_translation(
+            Vector::new(bounds.x, bounds.y),
+            |renderer| {
+                renderer.draw(
+                    self.program.draw(state, renderer, theme, bounds, cursor),
+                );
+            },
+        );
+    }
+}
+
+impl<'a, P, Message, Renderer> From<Canvas<P, Message, Renderer>>
+    for Element<'a, Message, Renderer>
+where
+    Message: 'a,
+    Renderer: 'a + iced_renderer::geometry::Renderer,
+    P: Program<Message, Renderer> + 'a,
+{
+    fn from(
+        canvas: Canvas<P, Message, Renderer>,
+    ) -> Element<'a, Message, Renderer> {
+        Element::new(canvas)
+    }
+}
diff --git a/src/widget/canvas/cursor.rs b/src/widget/canvas/cursor.rs
new file mode 100644
index 00000000..ef6a7771
--- /dev/null
+++ b/src/widget/canvas/cursor.rs
@@ -0,0 +1,64 @@
+use crate::{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/src/widget/canvas/event.rs b/src/widget/canvas/event.rs
new file mode 100644
index 00000000..7c733a4d
--- /dev/null
+++ b/src/widget/canvas/event.rs
@@ -0,0 +1,21 @@
+//! 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/src/widget/canvas/program.rs b/src/widget/canvas/program.rs
new file mode 100644
index 00000000..fd15663a
--- /dev/null
+++ b/src/widget/canvas/program.rs
@@ -0,0 +1,108 @@
+use crate::widget::canvas::event::{self, Event};
+use crate::widget::canvas::mouse;
+use crate::widget::canvas::Cursor;
+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, Renderer = crate::Renderer>
+where
+    Renderer: iced_renderer::geometry::Renderer,
+{
+    /// 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,
+        renderer: &Renderer,
+        theme: &Renderer::Theme,
+        bounds: Rectangle,
+        cursor: Cursor,
+    ) -> Vec<Renderer::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, Renderer, T> Program<Message, Renderer> for &T
+where
+    Renderer: iced_renderer::geometry::Renderer,
+    T: Program<Message, Renderer>,
+{
+    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,
+        renderer: &Renderer,
+        theme: &Renderer::Theme,
+        bounds: Rectangle,
+        cursor: Cursor,
+    ) -> Vec<Renderer::Geometry> {
+        T::draw(self, state, renderer, 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/src/widget/qr_code.rs b/src/widget/qr_code.rs
new file mode 100644
index 00000000..66442d5d
--- /dev/null
+++ b/src/widget/qr_code.rs
@@ -0,0 +1,300 @@
+//! Encode and display information in a QR code.
+use crate::widget::canvas;
+use crate::Renderer;
+
+use iced_native::layout;
+use iced_native::renderer;
+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, Theme> Widget<Message, Renderer<Theme>> for QRCode<'a> {
+    fn width(&self) -> Length {
+        Length::Shrink
+    }
+
+    fn height(&self) -> Length {
+        Length::Shrink
+    }
+
+    fn layout(
+        &self,
+        _renderer: &Renderer<Theme>,
+        _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<Theme>,
+        _theme: &Theme,
+        _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(renderer, 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.0);
+        });
+    }
+}
+
+impl<'a, Message, Theme> From<QRCode<'a>>
+    for Element<'a, Message, Renderer<Theme>>
+{
+    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,
+        }
+    }
+}