Move everything into `crates/` directory

1 files changed, 0 insertions, 565 deletions

diff --git a/src/export/pdf/page.rs b/src/export/pdf/page.rs
deleted file mode 100644
index 22e590d5..00000000
--- a/src/export/pdf/page.rs
+++ /dev/null
@@ -1,565 +0,0 @@
-use ecow::eco_format;
-use pdf_writer::types::{
-    ActionType, AnnotationType, ColorSpaceOperand, LineCapStyle, LineJoinStyle,
-};
-use pdf_writer::writers::ColorSpace;
-use pdf_writer::{Content, Filter, Finish, Name, Rect, Ref, Str};
-
-use super::{deflate, AbsExt, EmExt, PdfContext, RefExt, D65_GRAY, SRGB};
-use crate::doc::{Destination, Frame, FrameItem, GroupItem, Meta, TextItem};
-use crate::font::Font;
-use crate::geom::{
-    self, Abs, Color, Em, Geometry, LineCap, LineJoin, Numeric, Paint, Point, Ratio,
-    Shape, Size, Stroke, Transform,
-};
-use crate::image::Image;
-
-/// Construct page objects.
-#[tracing::instrument(skip_all)]
-pub fn construct_pages(ctx: &mut PdfContext, frames: &[Frame]) {
-    for frame in frames {
-        construct_page(ctx, frame);
-    }
-}
-
-/// Construct a page object.
-#[tracing::instrument(skip_all)]
-pub fn construct_page(ctx: &mut PdfContext, frame: &Frame) {
-    let page_ref = ctx.alloc.bump();
-    ctx.page_refs.push(page_ref);
-    ctx.page_heights.push(frame.height().to_f32());
-
-    let mut ctx = PageContext {
-        parent: ctx,
-        page_ref,
-        content: Content::new(),
-        state: State::default(),
-        saves: vec![],
-        bottom: 0.0,
-        links: vec![],
-    };
-
-    let size = frame.size();
-
-    // Make the coordinate system start at the top-left.
-    ctx.bottom = size.y.to_f32();
-    ctx.transform(Transform {
-        sx: Ratio::one(),
-        ky: Ratio::zero(),
-        kx: Ratio::zero(),
-        sy: Ratio::new(-1.0),
-        tx: Abs::zero(),
-        ty: size.y,
-    });
-
-    // Encode the page into the content stream.
-    write_frame(&mut ctx, frame);
-
-    let page = Page {
-        size,
-        content: ctx.content,
-        id: ctx.page_ref,
-        links: ctx.links,
-    };
-
-    ctx.parent.pages.push(page);
-}
-
-/// Write the page tree.
-#[tracing::instrument(skip_all)]
-pub fn write_page_tree(ctx: &mut PdfContext) {
-    for page in std::mem::take(&mut ctx.pages).into_iter() {
-        write_page(ctx, page);
-    }
-
-    let mut pages = ctx.writer.pages(ctx.page_tree_ref);
-    pages
-        .count(ctx.page_refs.len() as i32)
-        .kids(ctx.page_refs.iter().copied());
-
-    let mut resources = pages.resources();
-    let mut spaces = resources.color_spaces();
-    spaces.insert(SRGB).start::<ColorSpace>().srgb();
-    spaces.insert(D65_GRAY).start::<ColorSpace>().d65_gray();
-    spaces.finish();
-
-    let mut fonts = resources.fonts();
-    for (font_ref, f) in ctx.font_map.pdf_indices(&ctx.font_refs) {
-        let name = eco_format!("F{}", f);
-        fonts.pair(Name(name.as_bytes()), font_ref);
-    }
-
-    fonts.finish();
-
-    let mut images = resources.x_objects();
-    for (image_ref, im) in ctx.image_map.pdf_indices(&ctx.image_refs) {
-        let name = eco_format!("Im{}", im);
-        images.pair(Name(name.as_bytes()), image_ref);
-    }
-
-    images.finish();
-    resources.finish();
-    pages.finish();
-}
-
-/// Write a page tree node.
-#[tracing::instrument(skip_all)]
-fn write_page(ctx: &mut PdfContext, page: Page) {
-    let content_id = ctx.alloc.bump();
-
-    let mut page_writer = ctx.writer.page(page.id);
-    page_writer.parent(ctx.page_tree_ref);
-
-    let w = page.size.x.to_f32();
-    let h = page.size.y.to_f32();
-    page_writer.media_box(Rect::new(0.0, 0.0, w, h));
-    page_writer.contents(content_id);
-
-    let mut annotations = page_writer.annotations();
-    for (dest, rect) in page.links {
-        let mut annotation = annotations.push();
-        annotation.subtype(AnnotationType::Link).rect(rect);
-        annotation.border(0.0, 0.0, 0.0, None);
-
-        let pos = match dest {
-            Destination::Url(uri) => {
-                annotation
-                    .action()
-                    .action_type(ActionType::Uri)
-                    .uri(Str(uri.as_bytes()));
-                continue;
-            }
-            Destination::Position(pos) => pos,
-            Destination::Location(loc) => ctx.introspector.position(loc),
-        };
-
-        let index = pos.page.get() - 1;
-        let y = (pos.point.y - Abs::pt(10.0)).max(Abs::zero());
-        if let Some(&height) = ctx.page_heights.get(index) {
-            annotation
-                .action()
-                .action_type(ActionType::GoTo)
-                .destination()
-                .page(ctx.page_refs[index])
-                .xyz(pos.point.x.to_f32(), height - y.to_f32(), None);
-        }
-    }
-
-    annotations.finish();
-    page_writer.finish();
-
-    let data = page.content.finish();
-    let data = deflate(&data);
-    ctx.writer.stream(content_id, &data).filter(Filter::FlateDecode);
-}
-
-/// Data for an exported page.
-pub struct Page {
-    /// The indirect object id of the page.
-    pub id: Ref,
-    /// The page's dimensions.
-    pub size: Size,
-    /// The page's content stream.
-    pub content: Content,
-    /// Links in the PDF coordinate system.
-    pub links: Vec<(Destination, Rect)>,
-}
-
-/// An exporter for the contents of a single PDF page.
-struct PageContext<'a, 'b> {
-    parent: &'a mut PdfContext<'b>,
-    page_ref: Ref,
-    content: Content,
-    state: State,
-    saves: Vec<State>,
-    bottom: f32,
-    links: Vec<(Destination, Rect)>,
-}
-
-/// A simulated graphics state used to deduplicate graphics state changes and
-/// keep track of the current transformation matrix for link annotations.
-#[derive(Debug, Default, Clone)]
-struct State {
-    transform: Transform,
-    font: Option<(Font, Abs)>,
-    fill: Option<Paint>,
-    fill_space: Option<Name<'static>>,
-    stroke: Option<Stroke>,
-    stroke_space: Option<Name<'static>>,
-}
-
-impl PageContext<'_, '_> {
-    fn save_state(&mut self) {
-        self.saves.push(self.state.clone());
-        self.content.save_state();
-    }
-
-    fn restore_state(&mut self) {
-        self.content.restore_state();
-        self.state = self.saves.pop().expect("missing state save");
-    }
-
-    fn transform(&mut self, transform: Transform) {
-        let Transform { sx, ky, kx, sy, tx, ty } = transform;
-        self.state.transform = self.state.transform.pre_concat(transform);
-        self.content.transform([
-            sx.get() as _,
-            ky.get() as _,
-            kx.get() as _,
-            sy.get() as _,
-            tx.to_f32(),
-            ty.to_f32(),
-        ]);
-    }
-
-    fn set_font(&mut self, font: &Font, size: Abs) {
-        if self.state.font.as_ref().map(|(f, s)| (f, *s)) != Some((font, size)) {
-            self.parent.font_map.insert(font.clone());
-            let name = eco_format!("F{}", self.parent.font_map.map(font.clone()));
-            self.content.set_font(Name(name.as_bytes()), size.to_f32());
-            self.state.font = Some((font.clone(), size));
-        }
-    }
-
-    fn set_fill(&mut self, fill: &Paint) {
-        if self.state.fill.as_ref() != Some(fill) {
-            let f = |c| c as f32 / 255.0;
-            let Paint::Solid(color) = fill;
-            match color {
-                Color::Luma(c) => {
-                    self.set_fill_color_space(D65_GRAY);
-                    self.content.set_fill_gray(f(c.0));
-                }
-                Color::Rgba(c) => {
-                    self.set_fill_color_space(SRGB);
-                    self.content.set_fill_color([f(c.r), f(c.g), f(c.b)]);
-                }
-                Color::Cmyk(c) => {
-                    self.reset_fill_color_space();
-                    self.content.set_fill_cmyk(f(c.c), f(c.m), f(c.y), f(c.k));
-                }
-            }
-            self.state.fill = Some(fill.clone());
-        }
-    }
-
-    fn set_fill_color_space(&mut self, space: Name<'static>) {
-        if self.state.fill_space != Some(space) {
-            self.content.set_fill_color_space(ColorSpaceOperand::Named(space));
-            self.state.fill_space = Some(space);
-        }
-    }
-
-    fn reset_fill_color_space(&mut self) {
-        self.state.fill_space = None;
-    }
-
-    fn set_stroke(&mut self, stroke: &Stroke) {
-        if self.state.stroke.as_ref() != Some(stroke) {
-            let Stroke {
-                paint,
-                thickness,
-                line_cap,
-                line_join,
-                dash_pattern,
-                miter_limit,
-            } = stroke;
-
-            let f = |c| c as f32 / 255.0;
-            let Paint::Solid(color) = paint;
-            match color {
-                Color::Luma(c) => {
-                    self.set_stroke_color_space(D65_GRAY);
-                    self.content.set_stroke_gray(f(c.0));
-                }
-                Color::Rgba(c) => {
-                    self.set_stroke_color_space(SRGB);
-                    self.content.set_stroke_color([f(c.r), f(c.g), f(c.b)]);
-                }
-                Color::Cmyk(c) => {
-                    self.reset_stroke_color_space();
-                    self.content.set_stroke_cmyk(f(c.c), f(c.m), f(c.y), f(c.k));
-                }
-            }
-
-            self.content.set_line_width(thickness.to_f32());
-            if self.state.stroke.as_ref().map(|s| &s.line_cap) != Some(line_cap) {
-                self.content.set_line_cap(line_cap.into());
-            }
-            if self.state.stroke.as_ref().map(|s| &s.line_join) != Some(line_join) {
-                self.content.set_line_join(line_join.into());
-            }
-            if self.state.stroke.as_ref().map(|s| &s.dash_pattern) != Some(dash_pattern) {
-                if let Some(pattern) = dash_pattern {
-                    self.content.set_dash_pattern(
-                        pattern.array.iter().map(|l| l.to_f32()),
-                        pattern.phase.to_f32(),
-                    );
-                } else {
-                    self.content.set_dash_pattern([], 0.0);
-                }
-            }
-            if self.state.stroke.as_ref().map(|s| &s.miter_limit) != Some(miter_limit) {
-                self.content.set_miter_limit(miter_limit.0 as f32);
-            }
-            self.state.stroke = Some(stroke.clone());
-        }
-    }
-
-    fn set_stroke_color_space(&mut self, space: Name<'static>) {
-        if self.state.stroke_space != Some(space) {
-            self.content.set_stroke_color_space(ColorSpaceOperand::Named(space));
-            self.state.stroke_space = Some(space);
-        }
-    }
-
-    fn reset_stroke_color_space(&mut self) {
-        self.state.stroke_space = None;
-    }
-}
-
-/// Encode a frame into the content stream.
-fn write_frame(ctx: &mut PageContext, frame: &Frame) {
-    for &(pos, ref item) in frame.items() {
-        let x = pos.x.to_f32();
-        let y = pos.y.to_f32();
-        match item {
-            FrameItem::Group(group) => write_group(ctx, pos, group),
-            FrameItem::Text(text) => write_text(ctx, x, y, text),
-            FrameItem::Shape(shape, _) => write_shape(ctx, x, y, shape),
-            FrameItem::Image(image, size, _) => write_image(ctx, x, y, image, *size),
-            FrameItem::Meta(meta, size) => match meta {
-                Meta::Link(dest) => write_link(ctx, pos, dest, *size),
-                Meta::Elem(_) => {}
-                Meta::Hide => {}
-                Meta::PageNumbering(_) => {}
-            },
-        }
-    }
-}
-
-/// Encode a group into the content stream.
-fn write_group(ctx: &mut PageContext, pos: Point, group: &GroupItem) {
-    let translation = Transform::translate(pos.x, pos.y);
-
-    ctx.save_state();
-    ctx.transform(translation.pre_concat(group.transform));
-
-    if group.clips {
-        let size = group.frame.size();
-        let w = size.x.to_f32();
-        let h = size.y.to_f32();
-        ctx.content.move_to(0.0, 0.0);
-        ctx.content.line_to(w, 0.0);
-        ctx.content.line_to(w, h);
-        ctx.content.line_to(0.0, h);
-        ctx.content.clip_nonzero();
-        ctx.content.end_path();
-    }
-
-    write_frame(ctx, &group.frame);
-    ctx.restore_state();
-}
-
-/// Encode a text run into the content stream.
-fn write_text(ctx: &mut PageContext, x: f32, y: f32, text: &TextItem) {
-    *ctx.parent.languages.entry(text.lang).or_insert(0) += text.glyphs.len();
-
-    let glyph_set = ctx.parent.glyph_sets.entry(text.font.clone()).or_default();
-    for g in &text.glyphs {
-        let segment = &text.text[g.range()];
-        glyph_set.entry(g.id).or_insert_with(|| segment.into());
-    }
-
-    ctx.set_fill(&text.fill);
-    ctx.set_font(&text.font, text.size);
-    ctx.content.begin_text();
-
-    // Positiosn the text.
-    ctx.content.set_text_matrix([1.0, 0.0, 0.0, -1.0, x, y]);
-
-    let mut positioned = ctx.content.show_positioned();
-    let mut items = positioned.items();
-    let mut adjustment = Em::zero();
-    let mut encoded = vec![];
-
-    // Write the glyphs with kerning adjustments.
-    for glyph in &text.glyphs {
-        adjustment += glyph.x_offset;
-
-        if !adjustment.is_zero() {
-            if !encoded.is_empty() {
-                items.show(Str(&encoded));
-                encoded.clear();
-            }
-
-            items.adjust(-adjustment.to_font_units());
-            adjustment = Em::zero();
-        }
-
-        encoded.push((glyph.id >> 8) as u8);
-        encoded.push((glyph.id & 0xff) as u8);
-
-        if let Some(advance) = text.font.advance(glyph.id) {
-            adjustment += glyph.x_advance - advance;
-        }
-
-        adjustment -= glyph.x_offset;
-    }
-
-    if !encoded.is_empty() {
-        items.show(Str(&encoded));
-    }
-
-    items.finish();
-    positioned.finish();
-    ctx.content.end_text();
-}
-
-/// Encode a geometrical shape into the content stream.
-fn write_shape(ctx: &mut PageContext, x: f32, y: f32, shape: &Shape) {
-    let stroke = shape.stroke.as_ref().and_then(|stroke| {
-        if stroke.thickness.to_f32() > 0.0 {
-            Some(stroke)
-        } else {
-            None
-        }
-    });
-
-    if shape.fill.is_none() && stroke.is_none() {
-        return;
-    }
-
-    if let Some(fill) = &shape.fill {
-        ctx.set_fill(fill);
-    }
-
-    if let Some(stroke) = stroke {
-        ctx.set_stroke(stroke);
-    }
-
-    match shape.geometry {
-        Geometry::Line(target) => {
-            let dx = target.x.to_f32();
-            let dy = target.y.to_f32();
-            ctx.content.move_to(x, y);
-            ctx.content.line_to(x + dx, y + dy);
-        }
-        Geometry::Rect(size) => {
-            let w = size.x.to_f32();
-            let h = size.y.to_f32();
-            if w > 0.0 && h > 0.0 {
-                ctx.content.rect(x, y, w, h);
-            }
-        }
-        Geometry::Path(ref path) => {
-            write_path(ctx, x, y, path);
-        }
-    }
-
-    match (&shape.fill, stroke) {
-        (None, None) => unreachable!(),
-        (Some(_), None) => ctx.content.fill_nonzero(),
-        (None, Some(_)) => ctx.content.stroke(),
-        (Some(_), Some(_)) => ctx.content.fill_nonzero_and_stroke(),
-    };
-}
-
-/// Encode a bezier path into the content stream.
-fn write_path(ctx: &mut PageContext, x: f32, y: f32, path: &geom::Path) {
-    for elem in &path.0 {
-        match elem {
-            geom::PathItem::MoveTo(p) => {
-                ctx.content.move_to(x + p.x.to_f32(), y + p.y.to_f32())
-            }
-            geom::PathItem::LineTo(p) => {
-                ctx.content.line_to(x + p.x.to_f32(), y + p.y.to_f32())
-            }
-            geom::PathItem::CubicTo(p1, p2, p3) => ctx.content.cubic_to(
-                x + p1.x.to_f32(),
-                y + p1.y.to_f32(),
-                x + p2.x.to_f32(),
-                y + p2.y.to_f32(),
-                x + p3.x.to_f32(),
-                y + p3.y.to_f32(),
-            ),
-            geom::PathItem::ClosePath => ctx.content.close_path(),
-        };
-    }
-}
-
-/// Encode a vector or raster image into the content stream.
-fn write_image(ctx: &mut PageContext, x: f32, y: f32, image: &Image, size: Size) {
-    ctx.parent.image_map.insert(image.clone());
-    let name = eco_format!("Im{}", ctx.parent.image_map.map(image.clone()));
-    let w = size.x.to_f32();
-    let h = size.y.to_f32();
-    ctx.content.save_state();
-    ctx.content.transform([w, 0.0, 0.0, -h, x, y + h]);
-
-    if let Some(alt) = image.alt() {
-        let mut image_span =
-            ctx.content.begin_marked_content_with_properties(Name(b"Span"));
-        let mut image_alt = image_span.properties();
-        image_alt.pair(Name(b"Alt"), pdf_writer::Str(alt.as_bytes()));
-        image_alt.finish();
-        image_span.finish();
-
-        ctx.content.x_object(Name(name.as_bytes()));
-        ctx.content.end_marked_content();
-    } else {
-        ctx.content.x_object(Name(name.as_bytes()));
-    }
-
-    ctx.content.restore_state();
-}
-
-/// Save a link for later writing in the annotations dictionary.
-fn write_link(ctx: &mut PageContext, pos: Point, dest: &Destination, size: Size) {
-    let mut min_x = Abs::inf();
-    let mut min_y = Abs::inf();
-    let mut max_x = -Abs::inf();
-    let mut max_y = -Abs::inf();
-
-    // Compute the bounding box of the transformed link.
-    for point in [
-        pos,
-        pos + Point::with_x(size.x),
-        pos + Point::with_y(size.y),
-        pos + size.to_point(),
-    ] {
-        let t = point.transform(ctx.state.transform);
-        min_x.set_min(t.x);
-        min_y.set_min(t.y);
-        max_x.set_max(t.x);
-        max_y.set_max(t.y);
-    }
-
-    let x1 = min_x.to_f32();
-    let x2 = max_x.to_f32();
-    let y1 = max_y.to_f32();
-    let y2 = min_y.to_f32();
-    let rect = Rect::new(x1, y1, x2, y2);
-
-    ctx.links.push((dest.clone(), rect));
-}
-
-impl From<&LineCap> for LineCapStyle {
-    fn from(line_cap: &LineCap) -> Self {
-        match line_cap {
-            LineCap::Butt => LineCapStyle::ButtCap,
-            LineCap::Round => LineCapStyle::RoundCap,
-            LineCap::Square => LineCapStyle::ProjectingSquareCap,
-        }
-    }
-}
-
-impl From<&LineJoin> for LineJoinStyle {
-    fn from(line_join: &LineJoin) -> Self {
-        match line_join {
-            LineJoin::Miter => LineJoinStyle::MiterJoin,
-            LineJoin::Round => LineJoinStyle::RoundJoin,
-            LineJoin::Bevel => LineJoinStyle::BevelJoin,
-        }
-    }
-}