Move Target to its own module
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58e04af824
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13 changed files with 96 additions and 78 deletions
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@ -1,83 +0,0 @@
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use crate::{Primitive, Renderer};
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use iced_native::{text, Color, Layout, MouseCursor, Node, Style, Text};
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use wgpu_glyph::{GlyphCruncher, Section};
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use std::cell::RefCell;
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use std::f32;
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impl text::Renderer for Renderer {
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fn node(&self, text: &Text) -> Node {
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let glyph_brush = self.glyph_brush.clone();
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let content = text.content.clone();
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// TODO: Investigate why stretch tries to measure this MANY times
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// with every ancestor's bounds.
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// Bug? Using the library wrong? I should probably open an issue on
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// the stretch repository.
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// I noticed that the first measure is the one that matters in
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// practice. Here, we use a RefCell to store the cached measurement.
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let measure = RefCell::new(None);
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let size = text.size.map(f32::from).unwrap_or(20.0);
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let style = Style::default().width(text.width);
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iced_native::Node::with_measure(style, move |bounds| {
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let mut measure = measure.borrow_mut();
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if measure.is_none() {
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let bounds = (
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match bounds.width {
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iced_native::Number::Undefined => f32::INFINITY,
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iced_native::Number::Defined(w) => w,
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},
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match bounds.height {
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iced_native::Number::Undefined => f32::INFINITY,
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iced_native::Number::Defined(h) => h,
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},
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);
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let text = Section {
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text: &content,
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scale: wgpu_glyph::Scale { x: size, y: size },
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bounds,
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..Default::default()
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};
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let (width, height) = if let Some(bounds) =
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glyph_brush.borrow_mut().glyph_bounds(&text)
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{
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(bounds.width().ceil(), bounds.height().ceil())
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} else {
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(0.0, 0.0)
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};
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let size = iced_native::Size { width, height };
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// If the text has no width boundary we avoid caching as the
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// layout engine may just be measuring text in a row.
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if bounds.0 == f32::INFINITY {
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return size;
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} else {
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*measure = Some(size);
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}
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}
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measure.unwrap()
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})
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}
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fn draw(&mut self, text: &Text, layout: Layout<'_>) -> Self::Output {
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(
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Primitive::Text {
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content: text.content.clone(),
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size: f32::from(text.size.unwrap_or(20)),
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bounds: layout.bounds(),
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color: text.color.unwrap_or(Color::BLACK),
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horizontal_alignment: text.horizontal_alignment,
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vertical_alignment: text.vertical_alignment,
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},
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MouseCursor::OutOfBounds,
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)
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}
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}
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