78 lines
1.7 KiB
Rust
78 lines
1.7 KiB
Rust
use etagere::AllocId;
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mod error;
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mod recently_used;
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mod text_atlas;
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mod text_render;
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pub use error::{PrepareError, RenderError};
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pub use fontdue;
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use recently_used::RecentlyUsedMap;
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pub use text_atlas::TextAtlas;
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pub use text_render::TextRenderer;
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/// The color to use when rendering text.
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#[repr(C)]
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pub struct Color {
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/// The red component of the color.
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pub r: u8,
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/// The green component of the color.
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pub g: u8,
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/// The blue component of the color.
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pub b: u8,
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/// The alpha component of the color.
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pub a: u8,
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}
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/// Allows text to be colored during rendering.
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pub trait HasColor: Copy {
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/// The color to use when rendering text.
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fn color(&self) -> Color;
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}
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pub(crate) enum GpuCache {
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InAtlas { x: u16, y: u16 },
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SkipRasterization,
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}
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pub(crate) struct GlyphDetails {
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width: u16,
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height: u16,
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gpu_cache: GpuCache,
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atlas_id: Option<AllocId>,
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}
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#[repr(C)]
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#[derive(Clone, Copy, Debug)]
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pub(crate) struct GlyphToRender {
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pos: [u32; 2],
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dim: [u16; 2],
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uv: [u16; 2],
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color: [u8; 4],
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}
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/// The screen resolution to use when rendering text.
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#[repr(C)]
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub struct Resolution {
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/// The width of the screen in pixels.
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pub width: u32,
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/// The height of the screen in pixels.
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pub height: u32,
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}
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#[repr(C)]
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub(crate) struct Params {
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screen_resolution: Resolution,
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_pad: [u32; 2],
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}
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/// Controls the overflow behavior of any glyphs that are outside of the layout bounds.
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pub enum TextOverflow {
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/// Glyphs can overflow the bounds.
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Overflow,
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/// Hide any glyphs outside the bounds. If a glyph is partially outside the bounds, it will be
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/// clipped to the bounds.
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Hide,
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}
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