Create iced_widget subcrate and re-organize the whole codebase

native/src/renderer/null.rs

@@ -1,82 +0,0 @@
-use crate::renderer::{self, Renderer};
-use crate::text::{self, Text};
-use crate::{Background, Font, Point, Rectangle, Size, Theme, Vector};
-
-use std::borrow::Cow;
-
-/// A renderer that does nothing.
-///
-/// It can be useful if you are writing tests!
-#[derive(Debug, Clone, Copy, Default)]
-pub struct Null;
-
-impl Null {
-    /// Creates a new [`Null`] renderer.
-    pub fn new() -> Null {
-        Null
-    }
-}
-
-impl Renderer for Null {
-    type Theme = Theme;
-
-    fn with_layer(&mut self, _bounds: Rectangle, _f: impl FnOnce(&mut Self)) {}
-
-    fn with_translation(
-        &mut self,
-        _translation: Vector,
-        _f: impl FnOnce(&mut Self),
-    ) {
-    }
-
-    fn clear(&mut self) {}
-
-    fn fill_quad(
-        &mut self,
-        _quad: renderer::Quad,
-        _background: impl Into<Background>,
-    ) {
-    }
-}
-
-impl text::Renderer for Null {
-    type Font = Font;
-
-    const ICON_FONT: Font = Font::SansSerif;
-    const CHECKMARK_ICON: char = '0';
-    const ARROW_DOWN_ICON: char = '0';
-
-    fn default_font(&self) -> Self::Font {
-        Font::SansSerif
-    }
-
-    fn default_size(&self) -> f32 {
-        16.0
-    }
-
-    fn load_font(&mut self, _font: Cow<'static, [u8]>) {}
-
-    fn measure(
-        &self,
-        _content: &str,
-        _size: f32,
-        _font: Font,
-        _bounds: Size,
-    ) -> (f32, f32) {
-        (0.0, 20.0)
-    }
-
-    fn hit_test(
-        &self,
-        _contents: &str,
-        _size: f32,
-        _font: Self::Font,
-        _bounds: Size,
-        _point: Point,
-        _nearest_only: bool,
-    ) -> Option<text::Hit> {
-        None
-    }
-
-    fn fill_text(&mut self, _text: Text<'_, Self::Font>) {}
-}