1use crate::{
  2    Bounds, DevicePixels, Font, FontId, FontMetrics, FontRun, GlyphId, LineLayout, Pixels,
  3    PlatformTextSystem, RenderGlyphParams, SharedString, Size,
  4};
  5use anyhow::Result;
  6use collections::HashMap;
  7use font_kit::{
  8    font::Font as FontKitFont,
  9    handle::Handle,
 10    hinting::HintingOptions,
 11    metrics::Metrics,
 12    properties::{Style as FontkitStyle, Weight as FontkitWeight},
 13    source::SystemSource,
 14    sources::mem::MemSource,
 15};
 16use parking_lot::RwLock;
 17use smallvec::SmallVec;
 18use std::{borrow::Cow};
 19
 20pub(crate) struct LinuxTextSystem(RwLock<LinuxTextSystemState>);
 21
 22struct LinuxTextSystemState {
 23    memory_source: MemSource,
 24    system_source: SystemSource,
 25    fonts: Vec<FontKitFont>,
 26    font_selections: HashMap<Font, FontId>,
 27    font_ids_by_postscript_name: HashMap<String, FontId>,
 28    font_ids_by_family_name: HashMap<SharedString, SmallVec<[FontId; 4]>>,
 29    postscript_names_by_font_id: HashMap<FontId, String>,
 30}
 31
 32unsafe impl Send for LinuxTextSystemState {}
 33unsafe impl Sync for LinuxTextSystemState {}
 34
 35impl LinuxTextSystem {
 36    pub(crate) fn new() -> Self {
 37        Self(RwLock::new(LinuxTextSystemState {
 38            memory_source: MemSource::empty(),
 39            system_source: SystemSource::new(),
 40            fonts: Vec::new(),
 41            font_selections: HashMap::default(),
 42            font_ids_by_postscript_name: HashMap::default(),
 43            font_ids_by_family_name: HashMap::default(),
 44            postscript_names_by_font_id: HashMap::default(),
 45        }))
 46    }
 47}
 48
 49impl Default for LinuxTextSystem {
 50    fn default() -> Self {
 51        Self::new()
 52    }
 53}
 54
 55#[allow(unused)]
 56impl PlatformTextSystem for LinuxTextSystem {
 57    fn add_fonts(&self, fonts: Vec<Cow<'static, [u8]>>) -> Result<()> {
 58        Ok(()) //TODO
 59    }
 60    fn all_font_names(&self) -> Vec<String> {
 61        Vec::new()
 62    }
 63    fn all_font_families(&self) -> Vec<String> {
 64        Vec::new()
 65    }
 66    fn font_id(&self, descriptor: &Font) -> Result<FontId> {
 67        Ok(FontId(0)) //TODO
 68    }
 69    fn font_metrics(&self, font_id: FontId) -> FontMetrics {
 70        unimplemented!()
 71    }
 72    fn typographic_bounds(&self, font_id: FontId, glyph_id: GlyphId) -> Result<Bounds<f32>> {
 73        unimplemented!()
 74    }
 75    fn advance(&self, font_id: FontId, glyph_id: GlyphId) -> Result<Size<f32>> {
 76        unimplemented!()
 77    }
 78    fn glyph_for_char(&self, font_id: FontId, ch: char) -> Option<GlyphId> {
 79        unimplemented!()
 80    }
 81    fn glyph_raster_bounds(&self, params: &RenderGlyphParams) -> Result<Bounds<DevicePixels>> {
 82        unimplemented!()
 83    }
 84    fn rasterize_glyph(
 85        &self,
 86        params: &RenderGlyphParams,
 87        raster_bounds: Bounds<DevicePixels>,
 88    ) -> Result<(Size<DevicePixels>, Vec<u8>)> {
 89        unimplemented!()
 90    }
 91    fn layout_line(&self, text: &str, font_size: Pixels, runs: &[FontRun]) -> LineLayout {
 92        LineLayout::default() //TODO
 93    }
 94    fn wrap_line(
 95        &self,
 96        text: &str,
 97        font_id: FontId,
 98        font_size: Pixels,
 99        width: Pixels,
100    ) -> Vec<usize> {
101        unimplemented!()
102    }
103}