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// use crate::{Rect, widget};
// use crate::{text, Theme};
// use crate::Point;
// use crate::draw::shape::triangle::Triangle;
// use crate::position::Dimensions;
// use crate::render::owned_primitive::OwnedPrimitive;
// use crate::render::owned_primitive_kind::OwnedPrimitiveKind;
// use crate::render::owned_primitives::OwnedPrimitives;
// use crate::render::owned_text::OwnedText;
// use crate::render::primitive::Primitive;
// use crate::render::primitive_kind::PrimitiveKind;
// use crate::render::primitive_walker::PrimitiveWalker;
// use crate::render::text::Text;
//
// /// An iterator-like type that yields a reference to each primitive in order of depth for
// /// rendering.
// ///
// /// This type is produced by the `Ui::draw` and `Ui::draw_if_changed` methods.
// ///
// /// This type borrows data from the `Ui` in order to lazily produce each `Primitive`. If you
// /// require ownership over the sequence of primitives, consider using the `OwnedPrimitives` type.
// /// The `OwnedPrimitives` type can be produced by calling the `Primitives::owned` method.
// pub struct Primitives<'a> {
// crop_stack: Vec<(widget::Id, Rect)>,
// theme: &'a Theme,
// fonts: &'a text::font::Map,
// window_rect: Rect,
// /// A buffer to use for triangulating polygons and lines for the `Triangles`.
// triangles: Vec<Triangle<Point>>,
// /// The slice of rusttype `PositionedGlyph`s to re-use for the `Text` primitive.
// positioned_glyphs: Vec<text::PositionedGlyph>,
// }
//
// impl<'a> PrimitiveWalker for Primitives<'a> {
// fn next_primitive(&mut self) -> Option<Primitive> {
// self.next()
// }
// }
//
// impl<'a> Primitives<'a> {
//
// /// Constructor for the `Primitives` iterator.
// pub fn new(graph: &'a Graph,
// depth_order: &'a [widget::Id],
// theme: &'a Theme,
// fonts: &'a text::font::Map,
// window_dim: Dimensions) -> Self
// {
// Primitives {
// crop_stack: Vec::new(),
// depth_order: depth_order.iter(),
// graph: graph,
// theme: theme,
// fonts: fonts,
// window_rect: Rect::from_xy_dim([0.0, 0.0], window_dim),
// triangles: Vec::new(),
// positioned_glyphs: Vec::new(),
// }
// }
//
// /// Yield the next `Primitive` for rendering.
// pub fn next(&mut self) -> Option<Primitive> {
// /*let Primitives {
// ref mut crop_stack,
// ref mut depth_order,
// ref mut triangles,
// ref mut positioned_glyphs,
// graph,
// theme,
// fonts,
// window_rect,
// } = *self;
//
// while let Some(widget) = next_widget(depth_order, graph, crop_stack, window_rect) {
// use widget::primitive::point_path::{State as PointPathState, Style as PointPathStyle};
// use widget::primitive::shape::polygon::{State as PolygonState};
// use widget::primitive::shape::Style as ShapeStyle;
//
// type TrianglesSingleColorState =
// widget::triangles::State<Vec<Triangle<Point>>>;
// type TrianglesMultiColorState =
// widget::triangles::State<Vec<Triangle<(Point, color::Rgba)>>>;
//
// let (id, clip, container) = widget;
// let rect = container.rect;
//
// fn state_type_id<W>() -> std::any::TypeId
// where W: OldWidget,
// {
// std::any::TypeId::of::<W::State>()
// }
//
//
//
// // Extract the unique state and style from the container.
// if container.type_id == state_type_id::<widget::Rectangle>() {
// if let Some(rectangle) = container.unique_widget_state::<widget::Rectangle>() {
// let UniqueWidgetState { ref style, .. } = *rectangle;
// let color = style.get_color(theme);
// return None;
// match *style {
// ShapeStyle::Fill(_) => {
// let kind = PrimitiveKind::Rectangle { color: color };
// return Some(new_primitive(id, kind, clip, rect));
// },
// ShapeStyle::Outline(ref line_style) => {
// let (l, r, b, t) = rect.l_r_b_t();
// let array = [
// [l, b],
// [l, t],
// [r, t],
// [r, b],
// [l, b],
// ];
// let cap = line_style.get_cap(theme);
// let thickness = line_style.get_thickness(theme);
// let points = array.iter().cloned();
// let triangles = match widget::point_path::triangles(points, cap, thickness) {
// None => &[],
// Some(iter) => {
// triangles.extend(iter);
// &triangles[..]
// },
// };
// let kind = PrimitiveKind::TrianglesSingleColor {
// color: color.to_rgb(),
// triangles: triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// },
// }
// }
//
// } else if container.type_id == std::any::TypeId::of::<TrianglesSingleColorState>() {
// type Style = widget::triangles::SingleColor;
// if let Some(tris) = container.state_and_style::<TrianglesSingleColorState, Style>() {
// let UniqueWidgetState { ref state, ref style } = *tris;
// let widget::triangles::SingleColor(color) = *style;
// let kind = PrimitiveKind::TrianglesSingleColor {
// color,
// triangles: state.triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// }
//
// } else if container.type_id == std::any::TypeId::of::<TrianglesMultiColorState>() {
// type Style = widget::triangles::MultiColor;
// if let Some(tris) = container.state_and_style::<TrianglesMultiColorState, Style>() {
// let UniqueWidgetState { ref state, .. } = *tris;
// let kind = PrimitiveKind::TrianglesMultiColor { triangles: state.triangles.clone() };
// return Some(new_primitive(id, kind, clip, rect));
// }
//
// } else if container.type_id == state_type_id::<widget::Oval<widget::oval::Full>>() {
// if let Some(oval) = container.unique_widget_state::<widget::Oval<widget::oval::Full>>() {
// let UniqueWidgetState { ref style, ref state } = *oval;
// triangles.clear();
// let points = widget::oval::circumference(rect, state.resolution);
// let color = style.get_color(theme);
// match *style {
//
// ShapeStyle::Fill(_) => {
// let r = Oval::fill_old(Dimensions::new(10.0, 10.0));
// return None;
// },
//
// ShapeStyle::Outline(ref line_style) => {
// let cap = line_style.get_cap(theme);
// let thickness = line_style.get_thickness(theme);
// let triangles = match widget::point_path::triangles(points, cap, thickness) {
// None => &[],
// Some(iter) => {
// triangles.extend(iter);
// &triangles[..]
// },
// };
// let kind = PrimitiveKind::TrianglesSingleColor {
// color: color.to_rgb(),
// triangles: triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// },
// }
// }
//
// // Oval subsection.
// } else if container.type_id == state_type_id::<widget::Oval<widget::oval::Section>>() {
// if let Some(oval) = container.unique_widget_state::<widget::Oval<widget::oval::Section>>() {
// let UniqueWidgetState { ref style, ref state } = *oval;
// triangles.clear();
// let points = widget::oval::circumference(rect, state.resolution)
// .section(state.section.radians)
// .offset_radians(state.section.offset_radians);
// let color = style.get_color(theme);
// match *style {
//
// ShapeStyle::Fill(_) => {
// let triangles = {
// triangles.extend(points.triangles());
// &triangles[..]
// };
// let kind = PrimitiveKind::TrianglesSingleColor {
// color: color.to_rgb(),
// triangles: triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// },
//
// ShapeStyle::Outline(ref line_style) => {
// use std::iter::once;
// let cap = line_style.get_cap(theme);
// let thickness = line_style.get_thickness(theme);
// let middle = rect.xy();
// let points = once(middle).chain(points).chain(once(middle));
// let triangles = match widget::point_path::triangles(points, cap, thickness) {
// None => &[],
// Some(iter) => {
// triangles.extend(iter);
// &triangles[..]
// },
// };
// let kind = PrimitiveKind::TrianglesSingleColor {
// color: color.to_rgb(),
// triangles: triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// },
// }
// }
//
// } else if container.type_id == std::any::TypeId::of::<PolygonState>() {
// use widget::primitive::shape::Style;
// if let Some(polygon) = container.state_and_style::<PolygonState, Style>() {
// let UniqueWidgetState { ref state, ref style } = *polygon;
// triangles.clear();
//
// let color = style.get_color(theme);
// let points = state.points.iter().cloned();
// match *style {
//
// ShapeStyle::Fill(_) => {
// let triangles = match widget::polygon::triangles(points) {
// None => &[],
// Some(iter) => {
// triangles.extend(iter);
// &triangles[..]
// },
// };
// let kind = PrimitiveKind::TrianglesSingleColor {
// color: color.to_rgb(),
// triangles: triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// },
//
// ShapeStyle::Outline(ref line_style) => {
// let cap = line_style.get_cap(theme);
// let thickness = line_style.get_thickness(theme);
// let triangles = match widget::point_path::triangles(points, cap, thickness) {
// None => &[],
// Some(iter) => {
// triangles.extend(iter);
// &triangles[..]
// },
// };
// let kind = PrimitiveKind::TrianglesSingleColor {
// color: color.to_rgb(),
// triangles: triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// },
// }
// }
//
// } else if container.type_id == state_type_id::<widget::Line>() {
// if let Some(line) = container.unique_widget_state::<widget::Line>() {
// let UniqueWidgetState { ref state, ref style } = *line;
// triangles.clear();
// let color = style.get_color(theme);
// let cap = style.get_cap(theme);
// let thickness = style.get_thickness(theme);
// let points = std::iter::once(state.start).chain(std::iter::once(state.end));
// let triangles = match widget::point_path::triangles(points, cap, thickness) {
// None => &[],
// Some(iter) => {
// triangles.extend(iter);
// &triangles[..]
// },
// };
// let kind = PrimitiveKind::TrianglesSingleColor {
// color: color.to_rgb(),
// triangles: triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// }
//
// } else if container.type_id == std::any::TypeId::of::<PointPathState>() {
// if let Some(point_path) = container.state_and_style::<PointPathState, PointPathStyle>() {
// let UniqueWidgetState { ref state, ref style } = *point_path;
// triangles.clear();
// let color = style.get_color(theme);
// let cap = style.get_cap(theme);
// let thickness = style.get_thickness(theme);
// let points = state.points.iter().map(|&t| t);
// let triangles = match widget::point_path::triangles(points, cap, thickness) {
// None => &[],
// Some(iter) => {
// triangles.extend(iter);
// &triangles[..]
// },
// };
// let kind = PrimitiveKind::TrianglesSingleColor {
// color: color.to_rgb(),
// triangles: triangles.to_vec(),
// };
// return Some(new_primitive(id, kind, clip, rect));
// }
//
// } else if container.type_id == state_type_id::<widget::Text>() {
// if let Some(text) = container.unique_widget_state::<widget::Text>() {
// let UniqueWidgetState { ref state, ref style } = *text;
// let font_id = match style.font_id(theme).or_else(|| fonts.ids().next()) {
// Some(id) => id,
// None => continue,
// };
// let font = match fonts.get(font_id) {
// Some(font) => font,
// None => continue,
// };
//
// // Retrieve styling.
// let color = style.color(theme);
// let font_size = style.font_size(theme);
// let line_spacing = style.line_spacing(theme);
// let justify = style.justify(theme);
// let y_align = Align::End;
//
// let text = Text {
// positioned_glyphs: (*positioned_glyphs).clone(),
// window_dim: window_rect.dim(),
// text: state.string.clone(),
// line_infos: state.line_infos.to_vec(),
// font: font.clone(),
// font_size: font_size,
// rect: rect,
// justify: justify,
// y_align: y_align,
// line_spacing: line_spacing,
// };
//
// let kind = PrimitiveKind::Text {
// color: color,
// text: text,
// font_id: font_id,
// };
// return Some(new_primitive(id, kind, clip, rect));
// }
//
// } else if container.type_id == state_type_id::<widget::Image>() {
// use widget::primitive::image::{State, Style};
// if let Some(image) = container.state_and_style::<State, Style>() {
// let UniqueWidgetState { ref state, ref style } = *image;
// let color = style.maybe_color(theme);
// let kind = PrimitiveKind::Image {
// color: color,
// image_id: state.image_id,
// source_rect: state.src_rect,
// };
// return Some(new_primitive(id, kind, clip, rect));
// }
//
// // Return an `Other` variant for all non-primitive widgets.
// } else {
// let kind = PrimitiveKind::Rectangle {color: Color::random()};
// return Some(new_primitive(id, kind, clip, rect));
// }
// }
// */
// None
// }
//
// /// Collect the `Primitives` list into an owned collection.
// ///
// /// This is useful for sending `Ui` rendering data across threads in an efficient manner.
// pub fn owned(mut self) -> OwnedPrimitives {
// let mut primitives = Vec::with_capacity(self.depth_order.len());
// let mut primitive_triangles_multi_color = Vec::new();
// let mut primitive_triangles_single_color = Vec::new();
// let mut primitive_line_infos = Vec::new();
// let mut texts_string = String::new();
// let mut max_glyphs = 0;
//
// while let Some(Primitive { id, rect, scizzor, kind }) = self.next() {
// let new = |kind| OwnedPrimitive {
// id: id,
// rect: rect,
// scizzor: scizzor,
// kind: kind,
// };
//
// match kind {
//
// PrimitiveKind::Rectangle { color } => {
// let kind = OwnedPrimitiveKind::Rectangle { color: color };
// primitives.push(new(kind));
// },
//
// PrimitiveKind::TrianglesSingleColor { color, triangles } => {
// let start = primitive_triangles_single_color.len();
// primitive_triangles_single_color.extend(triangles.iter().cloned());
// let end = primitive_triangles_single_color.len();
// let kind = OwnedPrimitiveKind::TrianglesSingleColor {
// color: color,
// triangle_range: start..end,
// };
// primitives.push(new(kind));
// },
//
// PrimitiveKind::TrianglesMultiColor { triangles } => {
// let start = primitive_triangles_multi_color.len();
// primitive_triangles_multi_color.extend(triangles.iter().cloned());
// let end = primitive_triangles_multi_color.len();
// let kind = OwnedPrimitiveKind::TrianglesMultiColor {
// triangle_range: start..end,
// };
// primitives.push(new(kind));
// },
//
// PrimitiveKind::Image { image_id, color, source_rect } => {
// let kind = OwnedPrimitiveKind::Image {
// image_id: image_id,
// color: color,
// source_rect: source_rect,
// };
// primitives.push(new(kind));
// },
//
// PrimitiveKind::Text { color, font_id, text } => {
// let Text {
// window_dim,
// text,
// line_infos,
// font,
// font_size,
// rect,
// justify,
// y_align,
// line_spacing,
// ..
// } = text;
//
// // Keep a rough estimate of the maximum number of glyphs so that we know what
// // capacity we should allocate the `PositionedGlyph` buffer with.
// max_glyphs = std::cmp::max(max_glyphs, text.len());
//
// // Pack the `texts_string`.
// let start_str_byte = texts_string.len();
// texts_string.push_str(&text);
// let end_str_byte = texts_string.len();
//
// // Pack the `line_infos`.
// let start_line_info_idx = primitive_line_infos.len();
// primitive_line_infos.extend(line_infos.iter().cloned());
// let end_line_info_idx = primitive_line_infos.len();
//
// let owned_text = OwnedText {
// str_byte_range: start_str_byte..end_str_byte,
// line_infos_range: start_line_info_idx..end_line_info_idx,
// window_dim: window_dim,
// font: font.clone(),
// font_size: font_size,
// rect: rect,
// justify: justify,
// y_align: y_align,
// line_spacing: line_spacing,
// };
//
// let kind = OwnedPrimitiveKind::Text {
// color: color,
// font_id: font_id,
// text: owned_text,
// };
// primitives.push(new(kind));
// },
//
// // TODO: Not sure how we should handle this yet.
// PrimitiveKind::Other(_) => (),
//
// _ => {}
// }
// }
//
// OwnedPrimitives {
// primitives: primitives,
// triangles_single_color: primitive_triangles_single_color,
// triangles_multi_color: primitive_triangles_multi_color,
// max_glyphs: max_glyphs,
// line_infos: primitive_line_infos,
// texts_string: texts_string,
// }
// }
//
// }
//
//