diff options
Diffstat (limited to 'renderer/src/widget/canvas.rs')
| -rw-r--r-- | renderer/src/widget/canvas.rs | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/renderer/src/widget/canvas.rs b/renderer/src/widget/canvas.rs deleted file mode 100644 index 35c8fff9..00000000 --- a/renderer/src/widget/canvas.rs +++ /dev/null @@ -1,177 +0,0 @@ -mod cache; - -pub use cache::Cache; - -pub use iced_native::widget::canvas::event::{self, Event}; -pub use iced_native::widget::canvas::fill::{self, Fill}; -pub use iced_native::widget::canvas::gradient::{self, Gradient}; -pub use iced_native::widget::canvas::path::{self, Path}; -pub use iced_native::widget::canvas::stroke::{self, Stroke}; -pub use iced_native::widget::canvas::{ - Canvas, Cursor, LineCap, LineDash, LineJoin, Program, Renderer, Style, Text, -}; - -use crate::{Backend, Point, Rectangle, Size, Vector}; - -pub use crate::Geometry; - -pub enum Frame { - Wgpu(iced_wgpu::canvas::Frame), - TinySkia(iced_tiny_skia::canvas::Frame), -} - -macro_rules! delegate { - ($frame:expr, $name:ident => $body:expr) => { - match $frame { - Self::Wgpu($name) => $body, - Self::TinySkia($name) => $body, - } - }; -} - -impl Frame { - pub fn new<Theme>(renderer: &crate::Renderer<Theme>, size: Size) -> Self { - match renderer.backend() { - Backend::Wgpu(_) => { - Frame::Wgpu(iced_wgpu::canvas::Frame::new(size)) - } - Backend::TinySkia(_) => { - Frame::TinySkia(iced_tiny_skia::canvas::Frame::new(size)) - } - } - } - - /// Returns the width of the [`Frame`]. - #[inline] - pub fn width(&self) -> f32 { - delegate!(self, frame => frame.width()) - } - - /// Returns the height of the [`Frame`]. - #[inline] - pub fn height(&self) -> f32 { - delegate!(self, frame => frame.height()) - } - - /// Returns the dimensions of the [`Frame`]. - #[inline] - pub fn size(&self) -> Size { - delegate!(self, frame => frame.size()) - } - - /// Returns the coordinate of the center of the [`Frame`]. - #[inline] - pub fn center(&self) -> Point { - delegate!(self, frame => frame.center()) - } - - /// 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>) { - delegate!(self, frame => frame.fill(path, fill)); - } - - /// 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>, - ) { - delegate!(self, frame => frame.fill_rectangle(top_left, size, fill)); - } - - /// 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>>) { - delegate!(self, frame => frame.stroke(path, stroke)); - } - - /// 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>) { - delegate!(self, frame => frame.fill_text(text)); - } - - /// 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)) { - delegate!(self, frame => frame.push_transform()); - - f(self); - - delegate!(self, frame => frame.pop_transform()); - } - - /// 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 = match self { - Self::Wgpu(_) => { - Self::Wgpu(iced_wgpu::canvas::Frame::new(region.size())) - } - Self::TinySkia(_) => Self::TinySkia( - iced_tiny_skia::canvas::Frame::new(region.size()), - ), - }; - - f(&mut frame); - - let translation = Vector::new(region.x, region.y); - - match (self, frame) { - (Self::Wgpu(target), Self::Wgpu(frame)) => { - target.clip(frame, translation); - } - (Self::TinySkia(target), Self::TinySkia(frame)) => { - target.clip(frame, translation); - } - _ => unreachable!(), - }; - } - - /// Applies a translation to the current transform of the [`Frame`]. - #[inline] - pub fn translate(&mut self, translation: Vector) { - delegate!(self, frame => frame.translate(translation)); - } - - /// Applies a rotation in radians to the current transform of the [`Frame`]. - #[inline] - pub fn rotate(&mut self, angle: f32) { - delegate!(self, frame => frame.rotate(angle)); - } - - /// Applies a scaling to the current transform of the [`Frame`]. - #[inline] - pub fn scale(&mut self, scale: f32) { - delegate!(self, frame => frame.scale(scale)); - } - - pub fn into_geometry(self) -> Geometry { - Geometry(delegate!(self, frame => frame.into_primitive())) - } -} |