72 lines
2 KiB
Rust
72 lines
2 KiB
Rust
//! Write some text for your users to read.
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use crate::backend::{self, Backend};
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use crate::{Primitive, Renderer};
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use iced_native::mouse;
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use iced_native::text;
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use iced_native::{
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Color, Font, HorizontalAlignment, Rectangle, Size, VerticalAlignment,
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};
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/// A paragraph of text.
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///
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/// This is an alias of an `iced_native` text with an `iced_wgpu::Renderer`.
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pub type Text<Backend> = iced_native::Text<Renderer<Backend>>;
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use std::f32;
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impl<B> text::Renderer for Renderer<B>
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where
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B: Backend + backend::Text,
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{
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type Font = Font;
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const DEFAULT_SIZE: u16 = 20;
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fn measure(
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&self,
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content: &str,
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size: u16,
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font: Font,
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bounds: Size,
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) -> (f32, f32) {
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self.backend()
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.measure(content, f32::from(size), font, bounds)
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}
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fn draw(
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&mut self,
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defaults: &Self::Defaults,
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bounds: Rectangle,
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content: &str,
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size: u16,
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font: Font,
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color: Option<Color>,
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horizontal_alignment: HorizontalAlignment,
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vertical_alignment: VerticalAlignment,
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) -> Self::Output {
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let x = match horizontal_alignment {
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iced_native::HorizontalAlignment::Left => bounds.x,
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iced_native::HorizontalAlignment::Center => bounds.center_x(),
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iced_native::HorizontalAlignment::Right => bounds.x + bounds.width,
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};
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let y = match vertical_alignment {
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iced_native::VerticalAlignment::Top => bounds.y,
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iced_native::VerticalAlignment::Center => bounds.center_y(),
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iced_native::VerticalAlignment::Bottom => bounds.y + bounds.height,
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};
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(
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Primitive::Text {
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content: content.to_string(),
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size: f32::from(size),
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bounds: Rectangle { x, y, ..bounds },
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color: color.unwrap_or(defaults.text.color),
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font,
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horizontal_alignment,
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vertical_alignment,
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},
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mouse::Interaction::default(),
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)
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}
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}
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