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@ -5,7 +5,7 @@ use skulpin::skia_safe::{TextBlob, Font as SkiaFont, Typeface, TextBlobBuilder,
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use font_kit::{source::SystemSource, metrics::Metrics, properties::{Properties, Weight, Style, Stretch}, family_name::FamilyName, font::Font, };
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use skribo::{LayoutSession, FontRef as SkriboFont, FontFamily, FontCollection, TextStyle};
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use log::trace;
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use log::{trace, info, warn};
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const STANDARD_CHARACTER_STRING: &str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
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@ -55,6 +55,18 @@ struct FontSet {
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bold_italic: FontCollection,
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}
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pub fn add_font_to_collection_by_name(name: &str, source: &SystemSource, collection: &mut FontCollection) -> Option<()> {
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source.select_family_by_name(name).ok()
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.and_then(|matching_fonts| matching_fonts.fonts()[0].load().ok())
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.map(|font| collection.add_family(FontFamily::new_from_font(font)))
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}
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pub fn add_asset_font_to_collection(name: &str, collection: &mut FontCollection) -> Option<()> {
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Asset::get(name)
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.and_then(|font_data| Font::from_bytes(font_data.to_vec().into(), 0).ok())
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.map(|font| collection.add_family(FontFamily::new_from_font(font)))
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}
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fn build_collection_by_font_name(font_name: Option<&str>, bold: bool, italic: bool) -> FontCollection {
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let source = SystemSource::new();
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@ -77,8 +89,9 @@ fn build_collection_by_font_name(font_name: Option<&str>, bold: bool, italic: bo
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weight, style, stretch: Stretch::NORMAL
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};
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if let Ok(custom) = source.select_best_match(&[FamilyName::Title(font_name.to_string())], &properties) {
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let font = custom.load().unwrap();
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collection.add_family(FontFamily::new_from_font(font));
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custom.load().ok()
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.map(|matching_font| collection.add_family(FontFamily::new_from_font(matching_font)))
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.unwrap_or_else(|| warn!("Could not load gui font"));
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}
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}
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@ -87,38 +100,33 @@ fn build_collection_by_font_name(font_name: Option<&str>, bold: bool, italic: bo
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} else {
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MONOSPACE_FONT
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};
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let monospace_data = Asset::get(monospace_style).expect("Failed to read monospace font data");
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let monospace_font = Font::from_bytes(monospace_data.to_vec().into(), 0).expect("Failed to parse monospace font data");
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collection.add_family(FontFamily::new_from_font(monospace_font));
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if let Ok(emoji) = source.select_family_by_name(SYSTEM_EMOJI_FONT) {
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let font = emoji.fonts()[0].load().unwrap();
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collection.add_family(FontFamily::new_from_font(font));
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}
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add_asset_font_to_collection(monospace_style, &mut collection)
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.unwrap_or_else(|| warn!("Could not load embedded monospace font"));
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if let Ok(sys_symbol) = source.select_family_by_name(SYSTEM_SYMBOL_FONT) {
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let font = sys_symbol.fonts()[0].load().unwrap();
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collection.add_family(FontFamily::new_from_font(font));
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if add_font_to_collection_by_name(SYSTEM_EMOJI_FONT, &source, &mut collection).is_none() {
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if cfg!(not(target_os = "macos")) && add_asset_font_to_collection(EMOJI_FONT, &mut collection).is_some() {
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info!("Fell back to embedded emoji font");
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} else {
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warn!("Could not load emoji font");
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}
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}
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if cfg!(not(target_os = "macos")) {
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let emoji_data = Asset::get(EMOJI_FONT).expect("Failed to read emoji font data");
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let emoji_font = Font::from_bytes(emoji_data.to_vec().into(), 0).expect("Failed to parse emoji font data");
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collection.add_family(FontFamily::new_from_font(emoji_font));
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}
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add_font_to_collection_by_name(SYSTEM_SYMBOL_FONT, &source, &mut collection)
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.unwrap_or_else(|| warn!("Could not load system symbol font"));
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let wide_style = if bold {
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WIDE_BOLD_FONT
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} else {
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WIDE_FONT
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};
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let wide_data = Asset::get(wide_style).expect("Failed to read wide font data");
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let wide_font = Font::from_bytes(wide_data.to_vec().into(), 0).expect("Failed to parse wide font data");
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collection.add_family(FontFamily::new_from_font(wide_font));
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let symbol_data = Asset::get(SYMBOL_FONT).expect("Failed to read symbol font data");
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let symbol_font = Font::from_bytes(symbol_data.to_vec().into(), 0).expect("Failed to parse symbol font data");
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collection.add_family(FontFamily::new_from_font(symbol_font));
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add_asset_font_to_collection(wide_style, &mut collection)
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.unwrap_or_else(|| warn!("Could not load embedded wide font"));
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add_asset_font_to_collection(SYMBOL_FONT, &mut collection)
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.unwrap_or_else(|| warn!("Could not load embedded symbol font"));
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collection
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}
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@ -261,3 +269,15 @@ impl CachingShaper {
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-metrics.underline_position * self.base_size / metrics.units_per_em as f32
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use font_kit::source::SystemSource;
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use skribo::FontCollection;
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#[test]
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fn unmatched_font_returns_nothing() {
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assert!(add_font_to_collection_by_name("Foobar", &SystemSource::new(), &mut FontCollection::new()).is_none());
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}
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}
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