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Diffstat (limited to 'graphics/src/renderer.rs')
| -rw-r--r-- | graphics/src/renderer.rs | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/graphics/src/renderer.rs b/graphics/src/renderer.rs deleted file mode 100644 index 143f348b..00000000 --- a/graphics/src/renderer.rs +++ /dev/null @@ -1,252 +0,0 @@ -//! Create a renderer from a [`Backend`]. -use crate::backend::{self, Backend}; -use crate::core; -use crate::core::image; -use crate::core::renderer; -use crate::core::svg; -use crate::core::text::Text; -use crate::core::{ - Background, Color, Font, Pixels, Point, Rectangle, Size, Transformation, -}; -use crate::text; -use crate::Primitive; - -use std::borrow::Cow; - -/// A backend-agnostic renderer that supports all the built-in widgets. -#[derive(Debug)] -pub struct Renderer<B: Backend> { - backend: B, - default_font: Font, - default_text_size: Pixels, - primitives: Vec<Primitive<B::Primitive>>, -} - -impl<B: Backend> Renderer<B> { - /// Creates a new [`Renderer`] from the given [`Backend`]. - pub fn new( - backend: B, - default_font: Font, - default_text_size: Pixels, - ) -> Self { - Self { - backend, - default_font, - default_text_size, - primitives: Vec::new(), - } - } - - /// Returns a reference to the [`Backend`] of the [`Renderer`]. - pub fn backend(&self) -> &B { - &self.backend - } - - /// Enqueues the given [`Primitive`] in the [`Renderer`] for drawing. - pub fn draw_primitive(&mut self, primitive: Primitive<B::Primitive>) { - self.primitives.push(primitive); - } - - /// Runs the given closure with the [`Backend`] and the recorded primitives - /// of the [`Renderer`]. - pub fn with_primitives<O>( - &mut self, - f: impl FnOnce(&mut B, &[Primitive<B::Primitive>]) -> O, - ) -> O { - f(&mut self.backend, &self.primitives) - } - - /// Starts recording a new layer. - pub fn start_layer(&mut self) -> Vec<Primitive<B::Primitive>> { - std::mem::take(&mut self.primitives) - } - - /// Ends the recording of a layer. - pub fn end_layer( - &mut self, - primitives: Vec<Primitive<B::Primitive>>, - bounds: Rectangle, - ) { - let layer = std::mem::replace(&mut self.primitives, primitives); - - self.primitives.push(Primitive::group(layer).clip(bounds)); - } - - /// Starts recording a translation. - pub fn start_transformation(&mut self) -> Vec<Primitive<B::Primitive>> { - std::mem::take(&mut self.primitives) - } - - /// Ends the recording of a translation. - pub fn end_transformation( - &mut self, - primitives: Vec<Primitive<B::Primitive>>, - transformation: Transformation, - ) { - let layer = std::mem::replace(&mut self.primitives, primitives); - - self.primitives - .push(Primitive::group(layer).transform(transformation)); - } -} - -impl<B: Backend> iced_core::Renderer for Renderer<B> { - fn with_layer(&mut self, bounds: Rectangle, f: impl FnOnce(&mut Self)) { - let current = self.start_layer(); - - f(self); - - self.end_layer(current, bounds); - } - - fn with_transformation( - &mut self, - transformation: Transformation, - f: impl FnOnce(&mut Self), - ) { - let current = self.start_transformation(); - - f(self); - - self.end_transformation(current, transformation); - } - - fn fill_quad( - &mut self, - quad: renderer::Quad, - background: impl Into<Background>, - ) { - self.primitives.push(Primitive::Quad { - bounds: quad.bounds, - background: background.into(), - border: quad.border, - shadow: quad.shadow, - }); - } - - fn clear(&mut self) { - self.primitives.clear(); - } -} - -impl<B> core::text::Renderer for Renderer<B> -where - B: Backend + backend::Text, -{ - type Font = Font; - type Paragraph = text::Paragraph; - type Editor = text::Editor; - - const ICON_FONT: Font = Font::with_name("Iced-Icons"); - const CHECKMARK_ICON: char = '\u{f00c}'; - const ARROW_DOWN_ICON: char = '\u{e800}'; - - fn default_font(&self) -> Self::Font { - self.default_font - } - - fn default_size(&self) -> Pixels { - self.default_text_size - } - - fn load_font(&mut self, bytes: Cow<'static, [u8]>) { - self.backend.load_font(bytes); - } - - fn fill_paragraph( - &mut self, - paragraph: &Self::Paragraph, - position: Point, - color: Color, - clip_bounds: Rectangle, - ) { - self.primitives.push(Primitive::Paragraph { - paragraph: paragraph.downgrade(), - position, - color, - clip_bounds, - }); - } - - fn fill_editor( - &mut self, - editor: &Self::Editor, - position: Point, - color: Color, - clip_bounds: Rectangle, - ) { - self.primitives.push(Primitive::Editor { - editor: editor.downgrade(), - position, - color, - clip_bounds, - }); - } - - fn fill_text( - &mut self, - text: Text<'_, Self::Font>, - position: Point, - color: Color, - clip_bounds: Rectangle, - ) { - self.primitives.push(Primitive::Text { - content: text.content.to_string(), - bounds: Rectangle::new(position, text.bounds), - size: text.size, - line_height: text.line_height, - color, - font: text.font, - horizontal_alignment: text.horizontal_alignment, - vertical_alignment: text.vertical_alignment, - shaping: text.shaping, - clip_bounds, - }); - } -} - -impl<B> image::Renderer for Renderer<B> -where - B: Backend + backend::Image, -{ - type Handle = image::Handle; - - fn dimensions(&self, handle: &image::Handle) -> Size<u32> { - self.backend().dimensions(handle) - } - - fn draw( - &mut self, - handle: image::Handle, - filter_method: image::FilterMethod, - bounds: Rectangle, - ) { - self.primitives.push(Primitive::Image { - handle, - filter_method, - bounds, - }); - } -} - -impl<B> svg::Renderer for Renderer<B> -where - B: Backend + backend::Svg, -{ - fn dimensions(&self, handle: &svg::Handle) -> Size<u32> { - self.backend().viewport_dimensions(handle) - } - - fn draw( - &mut self, - handle: svg::Handle, - color: Option<Color>, - bounds: Rectangle, - ) { - self.primitives.push(Primitive::Svg { - handle, - color, - bounds, - }); - } -} |