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typst/src/style.rs
Martin Haug 1c1c994c46 Merge branch 'master' into syntax-model
2020-01-20 22:42:00 +01:00

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//! Styles for text and pages.
use toddle::query::{FontFallbackTree, FontVariant, FontStyle, FontWeight};
use crate::size::{Size, Size2D, SizeBox, ValueBox, PSize};
/// Defines properties of pages and text.
#[derive(Debug, Default, Clone)]
pub struct LayoutStyle {
pub page: PageStyle,
pub text: TextStyle,
}
/// Defines which fonts to use and how to space text.
#[derive(Debug, Clone)]
pub struct TextStyle {
/// A tree of font names and generic family names.
pub fallback: FontFallbackTree,
/// The selected font variant.
pub variant: FontVariant,
/// Whether the bolder toggle is active or inactive. This determines
/// whether the next `*` adds or removes font weight.
pub bolder: bool,
/// The base font size.
pub base_font_size: Size,
/// The font scale to apply on the base font size.
pub font_scale: f32,
/// The word spacing (as a multiple of the font size).
pub word_spacing_scale: f32,
/// The line spacing (as a multiple of the font size).
pub line_spacing_scale: f32,
/// The paragraphs spacing (as a multiple of the font size).
pub paragraph_spacing_scale: f32,
}
impl TextStyle {
/// The scaled font size.
pub fn font_size(&self) -> Size {
self.base_font_size * self.font_scale
}
/// The absolute word spacing.
pub fn word_spacing(&self) -> Size {
self.word_spacing_scale * self.font_size()
}
/// The absolute line spacing.
pub fn line_spacing(&self) -> Size {
(self.line_spacing_scale - 1.0) * self.font_size()
}
/// The absolute paragraph spacing.
pub fn paragraph_spacing(&self) -> Size {
(self.paragraph_spacing_scale - 1.0) * self.font_size()
}
}
macro_rules! fallback {
(
list: ($($f:expr),*),
classes: { $($c:expr => ($($cf:expr),*),)* },
base: ($($b:expr),*),
) => ({
let mut fallback = FontFallbackTree::new(
vec![$($f.to_string()),*],
vec![$($b.to_string()),*],
);
$(
fallback.set_class_list($c.to_string(), vec![$($cf.to_string()),*])
.expect("TextStyle::default: unexpected error \
when setting class list");
)*
fallback
});
}
impl Default for TextStyle {
fn default() -> TextStyle {
TextStyle {
fallback: fallback! {
list: ("sans-serif"),
classes: {
"serif" => ("source serif pro", "noto serif"),
"sans-serif" => ("source sans pro", "noto sans"),
"monospace" => ("source code pro", "noto sans mono"),
"math" => ("latin modern math", "serif"),
},
base: ("source sans pro", "noto sans",
"noto emoji", "latin modern math"),
},
variant: FontVariant {
style: FontStyle::Normal,
weight: FontWeight(400),
},
bolder: false,
base_font_size: Size::pt(11.0),
font_scale: 1.0,
word_spacing_scale: 0.25,
line_spacing_scale: 1.2,
paragraph_spacing_scale: 1.5,
}
}
}
/// Defines the size and margins of a page.
#[derive(Debug, Copy, Clone)]
pub struct PageStyle {
/// The class of this page.
pub class: PaperClass,
/// The width and height of the page.
pub dimensions: Size2D,
/// The amount of white space on each side. If a side is set to `None`, the
/// default for the paper class is used.
pub margins: ValueBox<Option<PSize>>,
}
impl PageStyle {
/// The default page style for the given paper.
pub fn new(paper: Paper) -> PageStyle {
PageStyle {
class: paper.class,
dimensions: paper.dimensions,
margins: ValueBox::with_all(None),
}
}
/// The absolute margins.
pub fn margins(&self) -> SizeBox {
let dims = self.dimensions;
let default = self.class.default_margins();
SizeBox {
left: self.margins.left.unwrap_or(default.left).scaled(dims.x),
top: self.margins.top.unwrap_or(default.top).scaled(dims.y),
right: self.margins.right.unwrap_or(default.right).scaled(dims.x),
bottom: self.margins.bottom.unwrap_or(default.bottom).scaled(dims.y),
}
}
}
impl Default for PageStyle {
fn default() -> PageStyle {
PageStyle::new(PAPER_A4)
}
}
/// Details about a type of paper.
#[derive(Debug, Copy, Clone, PartialEq)]
pub struct Paper {
/// The kind of paper, which defines the default margins.
pub class: PaperClass,
/// The size of the paper.
pub dimensions: Size2D,
}
impl Paper {
/// The paper with the given name.
pub fn from_name(name: &str) -> Option<Paper> {
parse_paper(name)
}
}
/// What kind of page this is defines defaults for margins.
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum PaperClass {
Custom,
Base,
US,
Newspaper,
Book,
}
impl PaperClass {
/// The default margins for this page class.
pub fn default_margins(self) -> ValueBox<PSize> {
use PaperClass::*;
match self {
Custom => ValueBox::with_all(PSize::Scaled(0.1)),
Base => ValueBox::new(PSize::Scaled(0.119), PSize::Scaled(0.0569), PSize::Scaled(0.0476), PSize::Scaled(0.0569)),
US => ValueBox::new(PSize::Scaled(0.176), PSize::Scaled(0.1092), PSize::Scaled(0.176), PSize::Scaled(0.091)),
Newspaper => ValueBox::new(PSize::Scaled(0.0455), PSize::Scaled(0.0587), PSize::Scaled(0.0455), PSize::Scaled(0.0294)),
Book => ValueBox::new(PSize::Scaled(0.12), PSize::Scaled(0.0852), PSize::Scaled(0.15), PSize::Scaled(0.0965)),
}
}
}
macro_rules! papers {
($(($var:ident: $class:expr, $width:expr, $height: expr, $($patterns:tt)*))*) => {
use PaperClass::*;
$(/// The infos for the paper that's in the name.
pub const $var: Paper = Paper {
dimensions: Size2D {
x: Size { points: 2.83465 * $width },
y: Size { points: 2.83465 * $height },
},
class: $class,
};)*
fn parse_paper(paper: &str) -> Option<Paper> {
match paper.to_lowercase().as_str() {
$($($patterns)* => Some($var),)*
_ => None,
}
}
};
}
// All paper sizes in mm.
papers! {
// ---------------------------------------------------------------------- //
// ISO 216
// A Series
(PAPER_A0: Base, 841.0, 1189.0, "a0" | "poster")
(PAPER_A1: Base, 594.0, 841.0, "a1")
(PAPER_A2: Base, 420.0, 594.0, "a2")
(PAPER_A3: Base, 297.0, 420.0, "a3")
(PAPER_A4: Base, 210.0, 297.0, "a4")
(PAPER_A5: Base, 148.0, 210.0, "a5")
(PAPER_A6: Book, 105.0, 148.0, "a6")
(PAPER_A7: Base, 74.0, 105.0, "a7" | "iso-7810-id-2" | "id-2" | "visa" | "flyer")
(PAPER_A8: Base, 52.0, 74.0, "a8")
(PAPER_A9: Base, 37.0, 52.0, "a9")
(PAPER_A10: Base, 26.0, 37.0, "a10")
(PAPER_A11: Base, 18.0, 26.0, "a11")
// B Series
(PAPER_B1: Base, 707.0, 1000.0, "b1" | "flipchart")
(PAPER_B2: Base, 500.0, 707.0, "b2")
(PAPER_B3: Base, 353.0, 500.0, "b3")
(PAPER_B4: Base, 250.0, 353.0, "b4" | "sheet-music")
(PAPER_B5: Book, 176.0, 250.0, "b5")
(PAPER_B6: Book, 125.0, 176.0, "b6" | "book")
(PAPER_B7: Base, 88.0, 125.0, "b7" | "passport" | "iso-7810-id-3" | "id-3")
(PAPER_B8: Base, 62.0, 88.0, "b8")
// C Series
(PAPER_C3: Base, 324.0, 458.0, "c3")
(PAPER_C4: Base, 229.0, 324.0, "c4")
(PAPER_C5: Base, 162.0, 229.0, "c5")
(PAPER_C6: Base, 114.0, 162.0, "c6")
(PAPER_C7: Base, 81.0, 114.0, "c7")
(PAPER_C8: Base, 57.0, 81.0, "c8")
// D Series (DIN extension to ISO)
(PAPER_D3: Base, 272.0, 385.0, "din-d3")
(PAPER_D4: Base, 192.0, 272.0, "din-d4")
(PAPER_D5: Base, 136.0, 192.0, "din-d5" | "dvd")
(PAPER_D6: Base, 96.0, 136.0, "din-d6")
(PAPER_D7: Base, 68.0, 96.0, "din-d7")
(PAPER_D8: Base, 48.0, 68.0, "din-d8")
// Academically relevant SIS extensions
(PAPER_G5: Base, 169.0, 239.0, "sis-g5")
(PAPER_E5: Base, 115.0, 220.0, "sis-e5")
// ---------------------------------------------------------------------- //
// Unites States
// Customary
(PAPER_FOLIO: US, 210.0, 330.0, "folio" | "us-folio" | "us-f4")
(PAPER_LETTER: US, 216.0, 279.0, "letter" | "ansi-a" |
"american-quarto" | "carta")
(PAPER_LEGAL: US, 216.0, 356.0, "legal")
(PAPER_TABLOID: Newspaper, 279.0, 432.0, "tabloid" | "ansi-b")
(PAPER_LEDGER: Base, 432.0, 279.0, "ledger")
(PAPER_JUNIOR_LEGAL: US, 127.0, 203.0, "junior-legal" | "index-card")
(PAPER_HALF_LETTER: Base, 140.0, 216.0, "half-letter")
(PAPER_GOVERNMENT_LETTER: US, 203.0, 267.0, "government-letter")
(PAPER_GOVERNMENT_LEGAL: US, 216.0, 330.0, "government-legal" | "officio")
// ANSI Extensions
(PAPER_ANSI_C: Base, 432.0, 559.0, "ansi-c")
(PAPER_ANSI_D: Base, 559.0, 864.0, "ansi-d")
(PAPER_ANSI_E: Base, 864.0, 1118.0, "ansi-e")
(PAPER_ENGINEERING_F: Base, 711.0, 1016.0, "engineering-f" | "engineering" |
"navfac" | "aerospace")
// Architectural Paper
(PAPER_ARCH_A: Base, 229.0, 305.0, "arch-a" | "arch-1")
(PAPER_ARCH_B: Base, 305.0, 457.0, "arch-b" | "arch-2" | "extra-tabloide")
(PAPER_ARCH_C: Base, 457.0, 610.0, "arch-c" | "arch-3")
(PAPER_ARCH_D: Base, 610.0, 914.0, "arch-d" | "arch-4")
(PAPER_ARCH_E1: Base, 762.0, 1067.0, "arch-e1" | "arch-5")
(PAPER_ARCH_E: Base, 914.0, 1219.0, "arch-e" | "arch-6")
// ---------------------------------------------------------------------- //
// Japan
// JIS B Series
(PAPER_JIS_B0: Base, 1030.0, 1456.0, "jis-b0" | "jb0")
(PAPER_JIS_B1: Base, 728.0, 1030.0, "jis-b1" | "jb1")
(PAPER_JIS_B2: Base, 515.0, 728.0, "jis-b2" | "jb2")
(PAPER_JIS_B3: Base, 364.0, 515.0, "jis-b3" | "jb3")
(PAPER_JIS_B4: Base, 257.0, 364.0, "jis-b4" | "jb4")
(PAPER_JIS_B5: Base, 182.0, 257.0, "jis-b5" | "jb5")
(PAPER_JIS_B6: Base, 128.0, 182.0, "jis-b6" | "jb6")
(PAPER_JIS_B7: Base, 91.0, 128.0, "jis-b7" | "jb7")
(PAPER_JIS_B8: Base, 64.0, 91.0, "jis-b8" | "jb8")
(PAPER_JIS_B9: Base, 45.0, 64.0, "jis-b9" | "jb9")
(PAPER_JIS_B10: Base, 32.0, 45.0, "jis-b10" | "jb10")
(PAPER_JIS_B11: Base, 22.0, 32.0, "jis-b11" | "jb11")
// Traditional
(PAPER_SHIROKU_BAN_4: Base, 264.0, 379.0, "shiroku-ban-4")
(PAPER_SHIROKU_BAN_5: Base, 189.0, 262.0, "shiroku-ban-5")
(PAPER_SHIROKU_BAN_6: Base, 127.0, 188.0, "shiroku-ban-6")
(PAPER_KIKU_4: Base, 227.0, 306.0, "kiku-4")
(PAPER_KIKU_5: Base, 151.0, 227.0, "kiku-5")
// ---------------------------------------------------------------------- //
// China
// Chinese D Series
(PAPER_SAC_D0: Base, 764.0, 1064.0, "sac-d0" | "cn-d0")
(PAPER_SAC_D1: Base, 532.0, 760.0, "sac-d1" | "cn-d1")
(PAPER_SAC_D2: Base, 380.0, 528.0, "sac-d2" | "cn-d2")
(PAPER_SAC_D3: Base, 264.0, 376.0, "sac-d3" | "cn-d3")
(PAPER_SAC_D4: Base, 188.0, 260.0, "sac-d4" | "cn-d4")
(PAPER_SAC_D5: Base, 130.0, 184.0, "sac-d5" | "cn-d5")
(PAPER_SAC_D6: Base, 92.0, 126.0, "sac-d6" | "cn-d6")
// ---------------------------------------------------------------------- //
// United Kingdom Imperial (Assortment)
(PAPER_MONARCH: Base, 184.0, 267.0, "monarch")
(PAPER_QUARTO: Base, 229.0, 279.0, "quarto" | "us-quarto")
(PAPER_UK_QUARTO: Base, 203.0, 254.0, "uk-quarto" | "imperial-quarto")
(PAPER_UK_FOOLSCAP: Base, 343.0, 432.0, "foolscap" | "us-foolscap")
(PAPER_FOOLSCAP: Base, 203.0, 330.0, "imperial-foolscap" | "uk-foolscap")
(PAPER_POTT: Base, 318.0, 381.0, "pott")
(PAPER_CROWN: Base, 318.0, 508.0, "crown")
(PAPER_PINCHED_POST: Base, 375.0, 470.0, "pinched-post")
(PAPER_POST: Base, 394.0, 489.0, "post")
(PAPER_LARGE_POST: Base, 419.0, 533.0, "large-post")
(PAPER_DEMY: Base, 445.0, 572.0, "demy")
(PAPER_ROYAL: Base, 508.0, 635.0, "royal")
(PAPER_DOUBLE_CROWN: Base, 508.0, 762.0, "double-crown" | "theatre")
(PAPER_ELEPHANT: Base, 584.0, 711.0, "elephant")
(PAPER_DOUBLE_ROYAL: Base, 635.0, 1016.0, "double-royal" | "rail")
(PAPER_QUAD_CROWN: Base, 762.0, 1016.0, "quad-crown" | "cinema")
// ---------------------------------------------------------------------- //
// French Traditional (AFNOR)
(PAPER_CLOCHE: Base, 300.0, 400.0, "cloche")
(PAPER_POT: Base, 310.0, 400.0, "pot" | "ecolier" | "écolier")
(PAPER_TELLIERE: Base, 340.0, 440.0, "telliere" | "tellière")
(PAPER_COURONNE_ECRITURE: Base, 360.0, 460.0, "couronne-ecriture" |
"couronne" | "couronne-écriture")
(PAPER_COURONNE_EDITION: Base, 370.0, 470.0, "couronne-edition" |
"couronne-édition")
(PAPER_ROBERTO: Base, 390.0, 500.0, "roberto")
(PAPER_ECU: Base, 400.0, 520.0, "ecu" | "écu")
(PAPER_COQUILLE: Base, 440.0, 560.0, "coquille")
(PAPER_CARRE: Base, 450.0, 560.0, "carre" | "carré")
(PAPER_CAVALIER: Base, 460.0, 620.0, "cavalier")
(PAPER_DEMI_RAISIN: Base, 325.0, 500.0, "demi-raisin")
(PAPER_RAISIN: Base, 500.0, 650.0, "raisin" | "dessin")
(PAPER_DOUBLE_RAISIN: Base, 650.0, 1000.0, "double-raisin")
(PAPER_JESUS: Base, 560.0, 760.0, "jesus" | "jésus")
(PAPER_SOLEIL: Base, 600.0, 800.0, "soleil")
(PAPER_COLOMBIER_AFFICHE: Base, 600.0, 800.0, "colombier-affiche" | "affiche")
(PAPER_COLOMBIER_COMMERCIAL: Base, 630.0, 900.0, "colombier-commercial")
(PAPER_PETIT_AIGLE: Base, 700.0, 940.0, "petit-aigle")
(PAPER_GRAND_AIGLE: Base, 750.0, 1060.0, "grand-aigle" | "napoleon")
(PAPER_GRAND_MONDE: Base, 900.0, 1260.0, "grand-monde")
(PAPER_UNIVERS: Base, 1000.0, 1300.0, "univers" | "universe")
// ---------------------------------------------------------------------- //
// Newspaper
(PAPER_COMPACT: Newspaper, 280.0, 430.0, "compact")
(PAPER_BERLINER: Newspaper, 315.0, 470.0, "berliner" | "midi")
(PAPER_RHENISH: Newspaper, 350.0, 520.0, "rhenish")
(PAPER_BROADSHEET: Newspaper, 381.0, 578.0, "broadsheet" | "newspaper")
(PAPER_NEW_YORK_TIMES: Newspaper, 305.0, 559.0, "new-york-times" | "times")
// ---------------------------------------------------------------------- //
// Books
(PAPER_FOLIO_BOOK: Book, 304.8, 482.6, "book-folio")
(PAPER_QUARTO_BOOK: Book, 241.3, 304.8, "book-quarto")
(PAPER_OCTAVO_BOOK: Book, 152.4, 228.6, "book-octavo")
(PAPER_16_MO_BOOK: Book, 101.6, 171.45, "book-16mo")
(PAPER_32_MO_BOOK: Book, 88.9, 139.7, "book-32mo")
// ---------------------------------------------------------------------- //
// Various
(PAPER_ID_1: Base, 85.6, 53.98, "id-card" | "id-1" | "iso-7810-id-1" |
"eu-business-card" | "business-card")
(PAPER_US_BUSINESS_CARD: Base, 88.9, 50.8, "us-business-card")
(PAPER_JP_BUSINESS_CARD: Base, 91.0, 55.0, "jp-business-card")
(PAPER_CN_BUSINESS_CARD: Base, 90.0, 54.0, "cn-business-card")
(PAPER_A4_16_9: Base, 297.0, 167.0625, "presentation-16-9" | "presentation")
(PAPER_A4_4_3: Base, 280.0, 210.0, "presentation-4-3")
(PAPER_POSTCARD: Base, 152.4, 101.6, "postcard")
}
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