diff options
Diffstat (limited to 'graphics/src/backend.rs')
-rw-r--r-- | graphics/src/backend.rs | 67 |
1 files changed, 4 insertions, 63 deletions
diff --git a/graphics/src/backend.rs b/graphics/src/backend.rs index 59e95bf8..10eb337f 100644 --- a/graphics/src/backend.rs +++ b/graphics/src/backend.rs @@ -1,8 +1,7 @@ //! Write a graphics backend. -use iced_core::image; -use iced_core::svg; -use iced_core::text; -use iced_core::{Font, Point, Size}; +use crate::core::image; +use crate::core::svg; +use crate::core::Size; use std::borrow::Cow; @@ -12,69 +11,11 @@ use std::borrow::Cow; pub trait Backend { /// The custom kind of primitives this [`Backend`] supports. type Primitive; - - /// Trims the measurements cache. - /// - /// This method is currently necessary to properly trim the text cache in - /// `iced_wgpu` and `iced_glow` because of limitations in the text rendering - /// pipeline. It will be removed in the future. - fn trim_measurements(&mut self) {} } /// A graphics backend that supports text rendering. pub trait Text { - /// The icon font of the backend. - const ICON_FONT: Font; - - /// The `char` representing a ✔ icon in the [`ICON_FONT`]. - /// - /// [`ICON_FONT`]: Self::ICON_FONT - const CHECKMARK_ICON: char; - - /// The `char` representing a ▼ icon in the built-in [`ICON_FONT`]. - /// - /// [`ICON_FONT`]: Self::ICON_FONT - const ARROW_DOWN_ICON: char; - - /// Returns the default [`Font`]. - fn default_font(&self) -> Font; - - /// Returns the default size of text. - fn default_size(&self) -> f32; - - /// Measures the text contents with the given size and font, - /// returning the size of a laid out paragraph that fits in the provided - /// bounds. - fn measure( - &self, - contents: &str, - size: f32, - line_height: text::LineHeight, - font: Font, - bounds: Size, - shaping: text::Shaping, - ) -> Size; - - /// Tests whether the provided point is within the boundaries of [`Text`] - /// laid out with the given parameters, returning information about - /// the nearest character. - /// - /// If nearest_only is true, the hit test does not consider whether the - /// the point is interior to any glyph bounds, returning only the character - /// with the nearest centeroid. - fn hit_test( - &self, - contents: &str, - size: f32, - line_height: text::LineHeight, - font: Font, - bounds: Size, - shaping: text::Shaping, - point: Point, - nearest_only: bool, - ) -> Option<text::Hit>; - - /// Loads a [`Font`] from its bytes. + /// Loads a font from its bytes. fn load_font(&mut self, font: Cow<'static, [u8]>); } |