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Rename gfx to fonts (#32556)

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This crate only takes care of fonts now as graphics related things are
split into other crates. In addition, this exposes data structures at
the top of the crate, hiding the implementation details and making it
simpler to import them.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
This commit is contained in:
Martin Robinson 2024-06-19 22:26:19 +02:00 • committed by GitHub
parent 9f8118abc7
commit cd2ab36759
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159 changed files with 224 additions and 266 deletions
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68
components/gfx/text/mod.rs
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@ -1,68 +0,0 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use unicode_properties::{emoji, EmojiStatus, UnicodeEmoji};
pub use crate::text::shaping::Shaper;
pub mod glyph;
pub mod shaping;
pub mod util;
/// Whether or not font fallback selection prefers the emoji or text representation
/// of a character. If `None` then either presentation is acceptable.
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum EmojiPresentationPreference {
None,
Text,
Emoji,
}
#[derive(Clone, Copy, Debug)]
pub struct FallbackFontSelectionOptions {
pub character: char,
pub presentation_preference: EmojiPresentationPreference,
}
impl Default for FallbackFontSelectionOptions {
fn default() -> Self {
Self {
character: ' ',
presentation_preference: EmojiPresentationPreference::None,
}
}
}
impl FallbackFontSelectionOptions {
pub fn new(character: char, next_character: Option<char>) -> Self {
let presentation_preference = match next_character {
Some(next_character) if emoji::is_emoji_presentation_selector(next_character) => {
EmojiPresentationPreference::Emoji
},
Some(next_character) if emoji::is_text_presentation_selector(next_character) => {
EmojiPresentationPreference::Text
},
// We don't want to select emoji prsentation for any possible character that might be an emoji, because
// that includes characters such as '0' that are also used outside of emoji clusters. Instead, only
// select the emoji font for characters that explicitly have an emoji presentation (in the absence
// of the emoji presentation selectors above).
_ if matches!(
character.emoji_status(),
EmojiStatus::EmojiPresentation |
EmojiStatus::EmojiPresentationAndModifierBase |
EmojiStatus::EmojiPresentationAndEmojiComponent |
EmojiStatus::EmojiPresentationAndModifierAndEmojiComponent
) =>
{
EmojiPresentationPreference::Emoji
},
_ if character.is_emoji_char() => EmojiPresentationPreference::Text,
_ => EmojiPresentationPreference::None,
};
Self {
character,
presentation_preference,
}
}
}