# canvas_frame.rs.html -- source
Source to the Rust file `src/canvas/canvas_frame.rs`.
Keywords: rust, rustlang, rust-lang

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    use crate::util::vertex_3d::{Vertex3D};
    use std::sync::Arc;
    use std::collections::HashMap;
    use crate::canvas::canvas_state::{Drawable};
    use crate::canvas::shader::text_shader::GlyphInstance;
    use std::hash::Hash;
    use crate::canvas::*;
    use crate::canvas::shader::dynamic_vertex::RuntimeVertexDef;

    /// I dont know why this isnt working
    /// fqowiejf
    pub struct CanvasFrame {
        pub colored_drawables: Vec<RuntimeVertexDef>,
        pub textured_drawables: HashMap<Arc<CanvasTextureHandle>, Vec<Vec<RuntimeVertexDef>>>,
        pub image_drawables: HashMap<Arc<CanvasImageHandle>, Vec<Vec<RuntimeVertexDef>>>,
        pub text_drawables: HashMap<Arc<CanvasFontHandle>, Vec<GlyphInstance>>
    }

    /*
    This is sort of the beginning of our interface with the user definable sprites.
    Will be taking in multiple type of items

    TEXT
        FontHandle
        VertexDefintion
            color
            position
            instances (string)
    Textured
        TextureHandle
        VertexDefintion
            position
            coords
            size

    Vertex definition is directly correlated to the compiled code. How do I bucket these

    I guess I could store them and set handles like I do textures

    The only ent that can create these vertex handles is the vkprocessor.
        So Text can only get a vertex definition by going like shader.get_definition()

    Text
        FontHandle
        VertexHandle

    Drawable must include
        shader_handle (but how to I get this to the text? this is runtime)

    Okay, no. Maybe a default shader type of setup. With a shader handle override????

    Type: Text
          Textured
          Img
          Color

    frame.draw(text) {

        text.type == TEXT { // When it matches to default text shader
            text_shader.get_definition()
            text_shader.get_pipeline()
        }
        ...
        else { // When the user passes in a shader
            text.shader_handle.get_definition()
            text.shader_handle.get_pipeline()
        }
    }

    // Has default shader
    let text = Text::new("asdoif");

    let frame = CanvasFrame::new();
    frame.draw(text);

    vkprocessor.run(frame);

    */

    impl CanvasFrame {

        /// Creates a bare canvas frame with empty accumulators a
        pub fn new() -> CanvasFrame {
            CanvasFrame {
                colored_drawables: vec![],
                textured_drawables: Default::default(),
                image_drawables: Default::default(),
                text_drawables: Default::default()
            }
        }

        // TODO: Fix this for text and fonts
        /// Accumulates the drawables collected Vertex2D's
        pub fn draw(&mut self, drawable: &dyn Drawable) {
            match drawable.get_texture_handle() {
                Some(handle) => {
                    self.textured_drawables
                        .entry(handle.clone())
                        .or_insert(Vec::new())
                        .push(drawable.collect());
                }
                None => {
                    match drawable.get_image_handle() {
                        Some(handle) => {
                            self.image_drawables
                                .entry(handle.clone())
                                .or_insert(Vec::new())
                                .push(drawable.collect());
                        }
                        None => {
                            self.colored_drawables.extend(drawable.collect());
                        }
                    }
                }
            }
        }
    }

    pub struct GenericCanvasFrame<H, V, In> {
        frame_data: HashMap<H, Vec<(Vec<V>, Vec<In>)>>
    }
    //
    //impl<V, In> GenericCanvasFrame<Vertex3D, V, In>  {
    //
    //    /// Creates a bare canvas frame with empty accumulators
    //    pub fn new() -> GenericCanvasFrame<Vertex3D, V, In> {
    //        GenericCanvasFrame {
    //            frame_data: Default::default()
    //        }
    //    }
    //
    //    pub fn draw(&mut self, drawable: &dyn DrawableTest<V, Vertex3D, In>) {
    //        self.frame_data
    //            .entry(drawable.get_handle().clone())
    //            .or_insert(Vec::new())
    //            .push((drawable.get_vertices(), drawable.get_instances()));
    //    }
    //}

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