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
 32// todo!(linux): Double check this
 33unsafe impl Send for LinuxTextSystemState {}
 34unsafe impl Sync for LinuxTextSystemState {}
 35
 36impl LinuxTextSystem {
 37    pub(crate) fn new() -> Self {
 38        Self(RwLock::new(LinuxTextSystemState {
 39            memory_source: MemSource::empty(),
 40            system_source: SystemSource::new(),
 41            fonts: Vec::new(),
 42            font_selections: HashMap::default(),
 43            font_ids_by_postscript_name: HashMap::default(),
 44            font_ids_by_family_name: HashMap::default(),
 45            postscript_names_by_font_id: HashMap::default(),
 46        }))
 47    }
 48}
 49
 50impl Default for LinuxTextSystem {
 51    fn default() -> Self {
 52        Self::new()
 53    }
 54}
 55
 56#[allow(unused)]
 57impl PlatformTextSystem for LinuxTextSystem {
 58    // todo!(linux)
 59    fn add_fonts(&self, fonts: Vec<Cow<'static, [u8]>>) -> Result<()> {
 60        Ok(())
 61    }
 62
 63    // todo!(linux)
 64    fn all_font_names(&self) -> Vec<String> {
 65        Vec::new()
 66    }
 67
 68    // todo!(linux)
 69    fn all_font_families(&self) -> Vec<String> {
 70        Vec::new()
 71    }
 72
 73    // todo!(linux)
 74    fn font_id(&self, descriptor: &Font) -> Result<FontId> {
 75        Ok(FontId(0))
 76    }
 77
 78    // todo!(linux)
 79    fn font_metrics(&self, font_id: FontId) -> FontMetrics {
 80        unimplemented!()
 81    }
 82
 83    // todo!(linux)
 84    fn typographic_bounds(&self, font_id: FontId, glyph_id: GlyphId) -> Result<Bounds<f32>> {
 85        unimplemented!()
 86    }
 87
 88    // todo!(linux)
 89    fn advance(&self, font_id: FontId, glyph_id: GlyphId) -> Result<Size<f32>> {
 90        unimplemented!()
 91    }
 92
 93    // todo!(linux)
 94    fn glyph_for_char(&self, font_id: FontId, ch: char) -> Option<GlyphId> {
 95        None
 96    }
 97
 98    // todo!(linux)
 99    fn glyph_raster_bounds(&self, params: &RenderGlyphParams) -> Result<Bounds<DevicePixels>> {
100        unimplemented!()
101    }
102
103    // todo!(linux)
104    fn rasterize_glyph(
105        &self,
106        params: &RenderGlyphParams,
107        raster_bounds: Bounds<DevicePixels>,
108    ) -> Result<(Size<DevicePixels>, Vec<u8>)> {
109        unimplemented!()
110    }
111
112    // todo!(linux)
113    fn layout_line(&self, text: &str, font_size: Pixels, runs: &[FontRun]) -> LineLayout {
114        LineLayout::default() //TODO
115    }
116
117    // todo!(linux)
118    fn wrap_line(
119        &self,
120        text: &str,
121        font_id: FontId,
122        font_size: Pixels,
123        width: Pixels,
124    ) -> Vec<usize> {
125        unimplemented!()
126    }
127}