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Refactor state

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This commit is contained in:
Laurenz 2021-07-29 13:21:25 +02:00
parent 7d15dc634b
commit 2c6127dea6
12 changed files with 261 additions and 209 deletions
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18
src/exec/context.rs
View File

@ -3,13 +3,13 @@ use std::rc::Rc;
use super::{Exec, ExecWithMap, State};
use crate::diag::{Diag, DiagSet, Pass};
use crate::util::EcoString;
use crate::eval::{ExprMap, Template};
use crate::geom::{Align, Dir, Gen, GenAxis, Length, Linear, Sides, Size};
use crate::layout::{
LayoutNode, LayoutTree, PadNode, PageRun, ParChild, ParNode, StackChild, StackNode,
};
use crate::syntax::{Span, SyntaxTree};
use crate::util::EcoString;
use crate::Context;
/// The context for execution.
@ -76,10 +76,10 @@ impl ExecContext {
/// Push text, but in monospace.
pub fn push_monospace_text(&mut self, text: impl Into<EcoString>) {
let prev = Rc::clone(&self.state.text);
self.state.text_mut().monospace = true;
let prev = Rc::clone(&self.state.font);
self.state.font_mut().monospace = true;
self.push_text(text);
self.state.text = prev;
self.state.font = prev;
}
/// Push a word space into the active paragraph.
@ -121,7 +121,7 @@ impl ExecContext {
/// Apply a forced paragraph break.
pub fn parbreak(&mut self) {
let amount = self.state.text.par_spacing();
let amount = self.state.par_spacing();
self.stack.finish_par(&self.state);
self.stack.push_soft(StackChild::Spacing(amount));
}
@ -148,7 +148,7 @@ impl ExecContext {
ParChild::Text(
text.into(),
self.state.aligns.cross,
Rc::clone(&self.state.text),
Rc::clone(&self.state.font),
)
}
}
@ -187,7 +187,7 @@ struct StackBuilder {
impl StackBuilder {
fn new(state: &State) -> Self {
Self {
dirs: Gen::new(state.dir, Dir::TTB),
dirs: state.dirs,
children: vec![],
last: Last::None,
par: ParBuilder::new(state),
@ -237,8 +237,8 @@ impl ParBuilder {
fn new(state: &State) -> Self {
Self {
aligns: state.aligns,
dir: state.dir,
line_spacing: state.text.line_spacing(),
dir: state.dirs.cross,
line_spacing: state.line_spacing(),
children: vec![],
last: Last::None,
}

18
src/exec/mod.rs
View File

@ -9,12 +9,12 @@ pub use state::*;
use std::fmt::Write;
use crate::diag::Pass;
use crate::util::EcoString;
use crate::eval::{ExprMap, Template, TemplateFunc, TemplateNode, TemplateTree, Value};
use crate::geom::{Dir, Gen};
use crate::geom::Gen;
use crate::layout::{LayoutTree, StackChild, StackNode};
use crate::pretty::pretty;
use crate::syntax::*;
use crate::util::EcoString;
use crate::Context;
/// Execute a template to produce a layout tree.
@ -57,8 +57,8 @@ impl ExecWithMap for SyntaxNode {
Self::Space => ctx.push_word_space(),
Self::Linebreak(_) => ctx.linebreak(),
Self::Parbreak(_) => ctx.parbreak(),
Self::Strong(_) => ctx.state.text_mut().strong ^= true,
Self::Emph(_) => ctx.state.text_mut().emph ^= true,
Self::Strong(_) => ctx.state.font_mut().strong ^= true,
Self::Emph(_) => ctx.state.font_mut().emph ^= true,
Self::Raw(n) => n.exec(ctx),
Self::Heading(n) => n.exec_with_map(ctx, map),
Self::List(n) => n.exec_with_map(ctx, map),
@ -87,10 +87,10 @@ impl ExecWithMap for HeadingNode {
ctx.parbreak();
let snapshot = ctx.state.clone();
let text = ctx.state.text_mut();
let font = ctx.state.font_mut();
let upscale = 1.6 - 0.1 * self.level as f64;
text.size *= upscale;
text.strong = true;
font.size *= upscale;
font.strong = true;
self.body.exec_with_map(ctx, map);
ctx.state = snapshot;
@ -118,11 +118,11 @@ fn exec_item(ctx: &mut ExecContext, label: EcoString, body: &SyntaxTree, map: &E
let label = ctx.exec_stack(|ctx| ctx.push_text(label));
let body = ctx.exec_tree_stack(body, map);
let stack = StackNode {
dirs: Gen::new(Dir::TTB, ctx.state.dir),
dirs: Gen::new(ctx.state.dirs.main, ctx.state.dirs.cross),
aspect: None,
children: vec![
StackChild::Any(label.into(), Gen::default()),
StackChild::Spacing(ctx.state.text.size / 2.0),
StackChild::Spacing(ctx.state.font.size / 2.0),
StackChild::Any(body.into(), Gen::default()),
],
};

208
src/exec/state.rs
View File

@ -12,29 +12,52 @@ use crate::paper::{PaperClass, PAPER_A4};
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct State {
/// The direction for text and other inline objects.
pub dir: Dir,
pub dirs: Gen<Dir>,
/// The current alignments of layouts in their parents.
pub aligns: Gen<Align>,
/// The current page settings.
pub page: PageState,
/// The current text settings.
pub text: Rc<TextState>,
pub page: Rc<PageState>,
/// The current paragraph settings.
pub par: Rc<ParState>,
/// The current font settings.
pub font: Rc<FontState>,
}
impl State {
/// Access the `text` state mutably.
pub fn text_mut(&mut self) -> &mut TextState {
Rc::make_mut(&mut self.text)
/// Access the `page` state mutably.
pub fn page_mut(&mut self) -> &mut PageState {
Rc::make_mut(&mut self.page)
}
/// Access the `par` state mutably.
pub fn par_mut(&mut self) -> &mut ParState {
Rc::make_mut(&mut self.par)
}
/// Access the `font` state mutably.
pub fn font_mut(&mut self) -> &mut FontState {
Rc::make_mut(&mut self.font)
}
/// The resolved line spacing.
pub fn line_spacing(&self) -> Length {
self.par.line_spacing.resolve(self.font.size)
}
/// The resolved paragraph spacing.
pub fn par_spacing(&self) -> Length {
self.par.par_spacing.resolve(self.font.size)
}
}
impl Default for State {
fn default() -> Self {
Self {
dir: Dir::LTR,
dirs: Gen::new(Dir::LTR, Dir::TTB),
aligns: Gen::splat(Align::Start),
page: PageState::default(),
text: Rc::new(TextState::default()),
page: Rc::new(PageState::default()),
par: Rc::new(ParState::default()),
font: Rc::new(FontState::default()),
}
}
}
@ -75,15 +98,27 @@ impl Default for PageState {
}
}
/// Defines text properties.
/// Style paragraph properties.
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct TextState {
/// A list of font families with generic class definitions (the final
/// family list also depends on `monospace`).
pub families: Rc<FamilyList>,
/// The selected font variant (the final variant also depends on `strong`
/// and `emph`).
pub variant: FontVariant,
pub struct ParState {
/// The spacing between paragraphs (dependent on scaled font size).
pub par_spacing: Linear,
/// The spacing between lines (dependent on scaled font size).
pub line_spacing: Linear,
}
impl Default for ParState {
fn default() -> Self {
Self {
par_spacing: Relative::new(1.0).into(),
line_spacing: Relative::new(0.5).into(),
}
}
}
/// Defines font properties.
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct FontState {
/// Whether the strong toggle is active or inactive. This determines
/// whether the next `*` adds or removes font weight.
pub strong: bool,
@ -94,19 +129,18 @@ pub struct TextState {
pub monospace: bool,
/// The font size.
pub size: Length,
/// The spacing between words (dependent on scaled font size).
// TODO: Don't ignore this.
pub word_spacing: Linear,
/// The spacing between lines (dependent on scaled font size).
pub line_spacing: Linear,
/// The spacing between paragraphs (dependent on scaled font size).
pub par_spacing: Linear,
/// The selected font variant (the final variant also depends on `strong`
/// and `emph`).
pub variant: FontVariant,
/// The top end of the text bounding box.
pub top_edge: VerticalFontMetric,
/// The bottom end of the text bounding box.
pub bottom_edge: VerticalFontMetric,
/// Glyph color.
pub fill: Paint,
/// A list of font families with generic class definitions (the final
/// family list also depends on `monospace`).
pub families: Rc<FamilyState>,
/// The specifications for a strikethrough line, if any.
pub strikethrough: Option<Rc<LineState>>,
/// The specifications for a underline, if any.
@ -115,22 +149,7 @@ pub struct TextState {
pub overline: Option<Rc<LineState>>,
}
impl TextState {
/// Access the `families` list mutably.
pub fn families_mut(&mut self) -> &mut FamilyList {
Rc::make_mut(&mut self.families)
}
/// The resolved family iterator.
pub fn families(&self) -> impl Iterator<Item = &str> + Clone {
let head = if self.monospace {
self.families.monospace.as_slice()
} else {
&[]
};
head.iter().map(String::as_str).chain(self.families.iter())
}
impl FontState {
/// The resolved variant with `strong` and `emph` factored in.
pub fn variant(&self) -> FontVariant {
let mut variant = self.variant;
@ -150,26 +169,39 @@ impl TextState {
variant
}
/// The resolved word spacing.
pub fn word_spacing(&self) -> Length {
self.word_spacing.resolve(self.size)
/// The resolved family iterator.
pub fn families(&self) -> impl Iterator<Item = &str> + Clone {
let head = if self.monospace {
self.families.monospace.as_slice()
} else {
&[]
};
let core = self.families.list.iter().flat_map(move |family: &FontFamily| {
match family {
FontFamily::Named(name) => std::slice::from_ref(name),
FontFamily::Serif => &self.families.serif,
FontFamily::SansSerif => &self.families.sans_serif,
FontFamily::Monospace => &self.families.monospace,
}
});
head.iter()
.chain(core)
.chain(self.families.base.iter())
.map(String::as_str)
}
/// The resolved line spacing.
pub fn line_spacing(&self) -> Length {
self.line_spacing.resolve(self.size)
}
/// The resolved paragraph spacing.
pub fn par_spacing(&self) -> Length {
self.par_spacing.resolve(self.size)
/// Access the `families` state mutably.
pub fn families_mut(&mut self) -> &mut FamilyState {
Rc::make_mut(&mut self.families)
}
}
impl Default for TextState {
impl Default for FontState {
fn default() -> Self {
Self {
families: Rc::new(FamilyList::default()),
families: Rc::new(FamilyState::default()),
variant: FontVariant {
style: FontStyle::Normal,
weight: FontWeight::REGULAR,
@ -179,9 +211,6 @@ impl Default for TextState {
emph: false,
monospace: false,
size: Length::pt(11.0),
word_spacing: Relative::new(0.25).into(),
line_spacing: Relative::new(0.5).into(),
par_spacing: Relative::new(1.0).into(),
top_edge: VerticalFontMetric::CapHeight,
bottom_edge: VerticalFontMetric::Baseline,
fill: Paint::Color(Color::Rgba(RgbaColor::BLACK)),
@ -194,63 +223,46 @@ impl Default for TextState {
/// Font family definitions.
#[derive(Debug, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct FamilyList {
pub struct FamilyState {
/// The user-defined list of font families.
pub list: Vec<FontFamily>,
pub list: Rc<Vec<FontFamily>>,
/// Definition of serif font families.
pub serif: Vec<String>,
pub serif: Rc<Vec<String>>,
/// Definition of sans-serif font families.
pub sans_serif: Vec<String>,
pub sans_serif: Rc<Vec<String>>,
/// Definition of monospace font families used for raw text.
pub monospace: Vec<String>,
/// Base fonts that are tried if the list has no match.
pub base: Vec<String>,
pub monospace: Rc<Vec<String>>,
/// Base fonts that are tried as last resort.
pub base: Rc<Vec<String>>,
}
impl FamilyList {
/// Flat iterator over this map's family names.
pub fn iter(&self) -> impl Iterator<Item = &str> + Clone {
self.list
.iter()
.flat_map(move |family: &FontFamily| {
match family {
FontFamily::Named(name) => std::slice::from_ref(name),
FontFamily::Serif => &self.serif,
FontFamily::SansSerif => &self.sans_serif,
FontFamily::Monospace => &self.monospace,
}
})
.chain(&self.base)
.map(String::as_str)
}
}
impl Default for FamilyList {
impl Default for FamilyState {
fn default() -> Self {
Self {
list: vec![FontFamily::Serif],
serif: vec!["eb garamond".into()],
sans_serif: vec!["pt sans".into()],
monospace: vec!["inconsolata".into()],
base: vec!["twitter color emoji".into(), "latin modern math".into()],
list: Rc::new(vec![FontFamily::Serif]),
serif: Rc::new(vec!["eb garamond".into()]),
sans_serif: Rc::new(vec!["pt sans".into()]),
monospace: Rc::new(vec!["inconsolata".into()]),
base: Rc::new(vec![
"twitter color emoji".into(),
"latin modern math".into(),
]),
}
}
}
/// Describes a line that is positioned over, under or on top of text.
/// Defines a line that is positioned over, under or on top of text.
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
pub struct LineState {
/// Stroke color of the line.
///
/// Defaults to the text color if `None`.
/// Stroke color of the line, defaults to the text color if `None`.
pub stroke: Option<Paint>,
/// Thickness of the line's stroke. Calling functions should attempt to
/// read this value from the appropriate font tables if this is `None`.
/// Thickness of the line's strokes (dependent on scaled font size), read
/// from the font tables if `None`.
pub thickness: Option<Linear>,
/// Position of the line relative to the baseline. Calling functions should
/// attempt to read this value from the appropriate font tables if this is
/// `None`.
/// Position of the line relative to the baseline (dependent on scaled font
/// size), read from the font tables if `None`.
pub offset: Option<Linear>,
/// Amount that the line will be longer or shorter than its associated text.
/// Amount that the line will be longer or shorter than its associated text
/// (dependent on scaled font size).
pub extent: Linear,
}

10
src/geom/gen.rs
View File

@ -60,6 +60,16 @@ impl Gen<Length> {
}
}
impl<T> Gen<Option<T>> {
/// Unwrap the individual fields.
pub fn unwrap_or(self, other: Gen<T>) -> Gen<T> {
Gen {
cross: self.cross.unwrap_or(other.cross),
main: self.main.unwrap_or(other.main),
}
}
}
impl<T> Get<GenAxis> for Gen<T> {
type Component = T;

10
src/geom/spec.rs
View File

@ -75,6 +75,16 @@ impl Spec<Length> {
}
}
impl<T> Spec<Option<T>> {
/// Unwrap the individual fields.
pub fn unwrap_or(self, other: Spec<T>) -> Spec<T> {
Spec {
horizontal: self.horizontal.unwrap_or(other.horizontal),
vertical: self.vertical.unwrap_or(other.vertical),
}
}
}
impl<T> Get<SpecAxis> for Spec<T> {
type Component = T;

4
src/layout/par.rs
View File

@ -5,7 +5,7 @@ use unicode_bidi::{BidiInfo, Level};
use xi_unicode::LineBreakIterator;
use super::*;
use crate::exec::TextState;
use crate::exec::FontState;
use crate::util::{EcoString, RangeExt, SliceExt};
type Range = std::ops::Range<usize>;
@ -29,7 +29,7 @@ pub enum ParChild {
/// Spacing between other nodes.
Spacing(Length),
/// A run of text and how to align it in its line.
Text(EcoString, Align, Rc<TextState>),
Text(EcoString, Align, Rc<FontState>),
/// Any child node and how to align it in its line.
Any(LayoutNode, Align),
}

10
src/layout/shaping.rs
View File

@ -5,7 +5,7 @@ use std::ops::Range;
use rustybuzz::UnicodeBuffer;
use super::{Element, Frame, Glyph, LayoutContext, Text};
use crate::exec::{LineState, TextState};
use crate::exec::{FontState, LineState};
use crate::font::{Face, FaceId, FontVariant, LineMetrics};
use crate::geom::{Dir, Length, Point, Size};
use crate::layout::Geometry;
@ -23,7 +23,7 @@ pub struct ShapedText<'a> {
/// The text direction.
pub dir: Dir,
/// The properties used for font selection.
pub state: &'a TextState,
pub state: &'a FontState,
/// The font size.
pub size: Size,
/// The baseline from the top of the frame.
@ -185,7 +185,7 @@ pub fn shape<'a>(
ctx: &mut LayoutContext,
text: &'a str,
dir: Dir,
state: &'a TextState,
state: &'a FontState,
) -> ShapedText<'a> {
let mut glyphs = vec![];
if !text.is_empty() {
@ -346,7 +346,7 @@ fn shape_segment<'a>(
fn measure(
ctx: &mut LayoutContext,
glyphs: &[ShapedGlyph],
state: &TextState,
state: &FontState,
) -> (Size, Length) {
let mut width = Length::zero();
let mut top = Length::zero();
@ -386,7 +386,7 @@ fn decorate(
pos: Point,
width: Length,
face_id: FaceId,
state: &TextState,
state: &FontState,
) {
let mut apply = |substate: &LineState, metrics: fn(&Face) -> &LineMetrics| {
let metrics = metrics(ctx.fonts.get(face_id));

84
src/library/layout.rs
View File

@ -24,45 +24,45 @@ pub fn page(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
Value::template(move |ctx| {
let snapshot = ctx.state.clone();
let state = ctx.state.page_mut();
if let Some(paper) = paper {
ctx.state.page.class = paper.class;
ctx.state.page.size = paper.size();
state.class = paper.class;
state.size = paper.size();
}
if let Some(width) = width {
ctx.state.page.class = PaperClass::Custom;
ctx.state.page.size.width = width;
state.class = PaperClass::Custom;
state.size.width = width;
}
if let Some(height) = height {
ctx.state.page.class = PaperClass::Custom;
ctx.state.page.size.height = height;
state.class = PaperClass::Custom;
state.size.height = height;
}
if let Some(margins) = margins {
ctx.state.page.margins = Sides::splat(Some(margins));
state.margins = Sides::splat(Some(margins));
}
if let Some(left) = left {
ctx.state.page.margins.left = Some(left);
state.margins.left = Some(left);
}
if let Some(top) = top {
ctx.state.page.margins.top = Some(top);
state.margins.top = Some(top);
}
if let Some(right) = right {
ctx.state.page.margins.right = Some(right);
state.margins.right = Some(right);
}
if let Some(bottom) = bottom {
ctx.state.page.margins.bottom = Some(bottom);
state.margins.bottom = Some(bottom);
}
if flip.unwrap_or(false) {
let page = &mut ctx.state.page;
std::mem::swap(&mut page.size.width, &mut page.size.height);
std::mem::swap(&mut state.size.width, &mut state.size.height);
}
ctx.pagebreak(false, true, span);
@ -96,7 +96,7 @@ fn spacing_impl(ctx: &mut EvalContext, args: &mut FuncArgs, axis: GenAxis) -> Va
Value::template(move |ctx| {
if let Some(linear) = spacing {
// TODO: Should this really always be font-size relative?
let amount = linear.resolve(ctx.state.text.size);
let amount = linear.resolve(ctx.state.font.size);
ctx.push_spacing(axis, amount);
}
})
@ -180,7 +180,7 @@ pub fn pad(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
/// `stack`: Stack children along an axis.
pub fn stack(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
let dir = args.named(ctx, "dir").unwrap_or(Dir::TTB);
let dir = args.named(ctx, "dir");
let children: Vec<_> = args.all().collect();
Value::template(move |ctx| {
@ -192,22 +192,26 @@ pub fn stack(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
})
.collect();
ctx.push_into_stack(StackNode {
dirs: Gen::new(ctx.state.dir, dir),
aspect: None,
children,
});
let mut dirs = Gen::new(None, dir).unwrap_or(ctx.state.dirs);
// If the directions become aligned, fix up the cross direction since
// that's the one that is not user-defined.
if dirs.main.axis() == dirs.cross.axis() {
dirs.cross = ctx.state.dirs.main;
}
ctx.push_into_stack(StackNode { dirs, aspect: None, children });
})
}
/// `grid`: Arrange children into a grid.
pub fn grid(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
let columns = args.named::<Tracks>(ctx, "columns").unwrap_or_default();
let rows = args.named::<Tracks>(ctx, "rows").unwrap_or_default();
let columns = args.named(ctx, "columns").unwrap_or_default();
let rows = args.named(ctx, "rows").unwrap_or_default();
let gutter_columns = args.named(ctx, "gutter-columns");
let gutter_rows = args.named(ctx, "gutter-rows");
let gutter = args
let default = args
.named(ctx, "gutter")
.map(|v| vec![TrackSizing::Linear(v)])
.unwrap_or_default();
@ -217,22 +221,40 @@ pub fn grid(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
let children: Vec<_> = args.all().collect();
let tracks = Gen::new(columns, rows);
let gutter = Gen::new(
gutter_columns.unwrap_or_else(|| default.clone()),
gutter_rows.unwrap_or(default),
);
Value::template(move |ctx| {
let children = children
.iter()
.map(|child| ctx.exec_template_stack(child).into())
.collect();
let cross_dir = column_dir.unwrap_or(ctx.state.dir);
let main_dir = row_dir.unwrap_or(cross_dir.axis().other().dir(true));
let mut dirs = Gen::new(column_dir, row_dir).unwrap_or(ctx.state.dirs);
// If the directions become aligned, try to fix up the direction which
// is not user-defined.
if dirs.main.axis() == dirs.cross.axis() {
let target = if column_dir.is_some() {
&mut dirs.main
} else {
&mut dirs.cross
};
*target = if target.axis() == ctx.state.dirs.cross.axis() {
ctx.state.dirs.main
} else {
ctx.state.dirs.cross
};
}
ctx.push_into_stack(GridNode {
dirs: Gen::new(cross_dir, main_dir),
tracks: Gen::new(columns.clone(), rows.clone()),
gutter: Gen::new(
gutter_columns.as_ref().unwrap_or(&gutter).clone(),
gutter_rows.as_ref().unwrap_or(&gutter).clone(),
),
dirs,
tracks: tracks.clone(),
gutter: gutter.clone(),
children,
})
})

96
src/library/text.rs
View File

@ -1,17 +1,10 @@
use crate::exec::{LineState, TextState};
use crate::exec::{FontState, LineState};
use crate::layout::Paint;
use super::*;
/// `font`: Configure the font.
pub fn font(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
let families: Vec<_> = args.all().collect();
let list = if families.is_empty() {
args.named(ctx, "family")
} else {
Some(FontDef(families))
};
let size = args.eat::<Linear>().or_else(|| args.named(ctx, "size"));
let style = args.named(ctx, "style");
let weight = args.named(ctx, "weight");
@ -19,20 +12,25 @@ pub fn font(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
let top_edge = args.named(ctx, "top-edge");
let bottom_edge = args.named(ctx, "bottom-edge");
let fill = args.named(ctx, "fill");
let families: Vec<_> = args.all().collect();
let list = if families.is_empty() {
args.named(ctx, "family")
} else {
Some(FontDef(Rc::new(families)))
};
let serif = args.named(ctx, "serif");
let sans_serif = args.named(ctx, "sans-serif");
let monospace = args.named(ctx, "monospace");
let body = args.expect::<Template>(ctx, "body").unwrap_or_default();
Value::template(move |ctx| {
let state = ctx.state.text_mut();
let state = ctx.state.font_mut();
if let Some(linear) = size {
state.size = linear.resolve(state.size);
}
if let Some(FontDef(list)) = &list {
state.families_mut().list = list.clone();
if let Some(size) = size {
state.size = size.resolve(state.size);
}
if let Some(style) = style {
@ -59,6 +57,10 @@ pub fn font(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
state.fill = Paint::Color(fill);
}
if let Some(FontDef(list)) = &list {
state.families_mut().list = list.clone();
}
if let Some(FamilyDef(serif)) = &serif {
state.families_mut().serif = serif.clone();
}
@ -75,41 +77,42 @@ pub fn font(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
})
}
struct FontDef(Vec<FontFamily>);
struct FontDef(Rc<Vec<FontFamily>>);
castable! {
FontDef: "font family or array of font families",
Value::Str(string) => Self(vec![FontFamily::Named(string.to_lowercase())]),
Value::Array(values) => Self(values
.into_iter()
.filter_map(|v| v.cast().ok())
.collect()
),
@family: FontFamily => Self(vec![family.clone()]),
Value::Str(string) => Self(Rc::new(vec![FontFamily::Named(string.to_lowercase())])),
Value::Array(values) => Self(Rc::new(
values
.into_iter()
.filter_map(|v| v.cast().ok())
.collect()
)),
@family: FontFamily => Self(Rc::new(vec![family.clone()])),
}
struct FamilyDef(Vec<String>);
struct FamilyDef(Rc<Vec<String>>);
castable! {
FamilyDef: "string or array of strings",
Value::Str(string) => Self(vec![string.to_lowercase()]),
Value::Array(values) => Self(values
.into_iter()
.filter_map(|v| v.cast().ok())
.map(|string: EcoString| string.to_lowercase())
.collect()
),
Value::Str(string) => Self(Rc::new(vec![string.to_lowercase()])),
Value::Array(values) => Self(Rc::new(
values
.into_iter()
.filter_map(|v| v.cast().ok())
.map(|string: EcoString| string.to_lowercase())
.collect()
)),
}
/// `par`: Configure paragraphs.
pub fn par(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
let par_spacing = args.named(ctx, "spacing");
let line_spacing = args.named(ctx, "leading");
let word_spacing = args.named(ctx, "word-spacing");
let body = args.expect::<Template>(ctx, "body").unwrap_or_default();
Value::template(move |ctx| {
let state = ctx.state.text_mut();
let state = ctx.state.par_mut();
if let Some(par_spacing) = par_spacing {
state.par_spacing = par_spacing;
@ -119,10 +122,6 @@ pub fn par(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
state.line_spacing = line_spacing;
}
if let Some(word_spacing) = word_spacing {
state.word_spacing = word_spacing;
}
ctx.parbreak();
body.exec(ctx);
})
@ -130,20 +129,23 @@ pub fn par(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
/// `lang`: Configure the language.
pub fn lang(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
let iso = args.eat::<EcoString>().map(|s| lang_dir(&s));
let dir = match args.named::<Spanned<Dir>>(ctx, "dir") {
Some(dir) if dir.v.axis() == SpecAxis::Horizontal => Some(dir.v),
Some(dir) => {
let iso = args.eat::<EcoString>();
let dir = if let Some(dir) = args.named::<Spanned<Dir>>(ctx, "dir") {
if dir.v.axis() == SpecAxis::Horizontal {
Some(dir.v)
} else {
ctx.diag(error!(dir.span, "must be horizontal"));
None
}
None => None,
} else {
iso.as_deref().map(lang_dir)
};
let body = args.expect::<Template>(ctx, "body").unwrap_or_default();
Value::template(move |ctx| {
if let Some(dir) = dir.or(iso) {
ctx.state.dir = dir;
if let Some(dir) = dir {
ctx.state.dirs.cross = dir;
}
ctx.parbreak();
@ -151,7 +153,7 @@ pub fn lang(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
})
}
/// The default direction for the language identified by `iso`.
/// The default direction for the language identified by the given `iso` code.
fn lang_dir(iso: &str) -> Dir {
match iso.to_ascii_lowercase().as_str() {
"ar" | "he" | "fa" | "ur" | "ps" | "yi" => Dir::RTL,
@ -178,7 +180,7 @@ pub fn overline(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
fn line_impl(
ctx: &mut EvalContext,
args: &mut FuncArgs,
substate: fn(&mut TextState) -> &mut Option<Rc<LineState>>,
substate: fn(&mut FontState) -> &mut Option<Rc<LineState>>,
) -> Value {
let stroke = args.eat().or_else(|| args.named(ctx, "stroke"));
let thickness = args.eat::<Linear>().or_else(|| args.named(ctx, "thickness"));
@ -197,7 +199,7 @@ fn line_impl(
});
Value::template(move |ctx| {
*substate(ctx.state.text_mut()) = state.clone();
*substate(ctx.state.font_mut()) = state.clone();
body.exec(ctx);
})
}

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7
tests/typ/text/par.typ
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@ -1,12 +1,7 @@
// Test configuring paragraph properties.
---
// FIXME: Word spacing doesn't work due to new shaping process.
#par!(spacing: 10pt, leading: 25%, word-spacing: 1pt)
#par!(spacing: 10pt, leading: 25%)
But, soft! what light through yonder window breaks? It is the east, and Juliet
is the sun.
---
// Test that it finishes an existing paragraph.
Hello #par!(word-spacing: 0pt) t h e r e !

5
tests/typeset.rs
View File

@ -63,8 +63,9 @@ fn main() {
// We want to have "unbounded" pages, so we allow them to be infinitely
// large and fit them to match their content.
let mut state = State::default();
state.page.size = Size::new(Length::pt(120.0), Length::inf());
state.page.margins = Sides::splat(Some(Length::pt(10.0).into()));
let page = state.page_mut();
page.size = Size::new(Length::pt(120.0), Length::inf());
page.margins = Sides::splat(Some(Length::pt(10.0).into()));
// We hook up some extra test helpers into the global scope.
let mut std = typst::library::new();