Refactor axis to builder pattern

examples/free_axis.rs

@@ -26,104 +26,97 @@ fn main() -> Result<(), core::convert::Infallible> {
         .text_color(RgbColor::YELLOW)
         .build();
 
-    Axis::new("X Fixed 0-100(10)",  0..100, Scale::Fixed(10))
+    Axis::new(0..100)
-        .into_drawable_axis(
+        .set_title("X Fixed 0-100(10)")
-            Placement::X{x1: 40, x2: 230, y: 10},
+        .set_scale(Scale::Fixed(10))
-            RgbColor::WHITE,
+        .into_drawable_axis(Placement::X { x1: 40, x2: 230, y: 10 })
-            text_style_white,
+        .set_color(RgbColor::WHITE)
-            2,
+        .set_text_style(text_style_white)
-            2,
+        .set_thickness(2)
-        )
+        .set_tick_size(2)
         .draw(&mut display)?;
 
-    Axis::new("X Fixed 0-200(100)",  0..200, Scale::Fixed(100))
+    Axis::new(0..200)
-        .into_drawable_axis(
+        .set_title("X Fixed 0-200(100)")
-            Placement::X{x1: 240, x2: 470, y: 10},
+        .set_scale(Scale::Fixed(100))
-            RgbColor::YELLOW,
+        .into_drawable_axis(Placement::X { x1: 240, x2: 470, y: 10 })
-            text_style_yellow_compact,
+        .set_color(RgbColor::YELLOW)
-            1,
+        .set_text_style(text_style_yellow_compact)
-            2,
+        .set_tick_size(2)
-        )
         .draw(&mut display)?;
 
-    Axis::new("X Frac 0-100(7)",  0..100, Scale::RangeFraction(7))
+    Axis::new(0..100)
-        .into_drawable_axis(
+        .set_title("X Frac 0-100(7)")
-            Placement::X{x1: 50, x2: 220, y: 30},
+        .set_scale(Scale::RangeFraction(7))
-            RgbColor::BLUE,
+        .into_drawable_axis(Placement::X { x1: 50, x2: 220, y: 30 })
-            text_style_white,
+        .set_color(RgbColor::BLUE)
-            3,
+        .set_text_style(text_style_white)
-            1,
+        .set_tick_size(3)
-        )
         .draw(&mut display)?;
 
-    Axis::new("X Frac 0-200(4)",  0..200, Scale::RangeFraction(4))
+    Axis::new(0..200)
-        .into_drawable_axis(
+        .set_title("X Frac 0-200(4)")
-            Placement::X{x1: 250, x2: 460, y: 40},
+        .set_scale(Scale::RangeFraction(4))
-            RgbColor::RED,
+        .into_drawable_axis(Placement::X { x1: 250, x2: 460, y: 40 })
-            text_style_yellow_compact,
+        .set_color(RgbColor::RED)
-            7,
+        .set_text_style(text_style_yellow_compact)
-            1,
+        .set_tick_size(7)
-        )
         .draw(&mut display)?;
 
-    Axis::new("Y Fixed 0-100(10)",  0..100, Scale::Fixed(10))
+    Axis::new(0..100)
+        .set_title("Y Fixed 0-100(10)")
+        .set_scale(Scale::Fixed(10))
         .into_drawable_axis(
-            Placement::Y{y1: 70, y2: 230, x: 160},
+            Placement::Y { y1: 70, y2: 230, x: 160 })
-            RgbColor::WHITE,
+        .set_color(RgbColor::WHITE)
-            text_style_white,
+        .set_text_style(text_style_white)
-            2,
+        .set_tick_size(2)
-            1,
-        )
         .draw(&mut display)?;
 
-    Axis::new("Y Fixed 0-200(100)",  0..200, Scale::Fixed(100))
+    Axis::new(0..200)
+        .set_title("Y Fixed 0-200(100)")
+        .set_scale(Scale::Fixed(100))
         .into_drawable_axis(
-            Placement::Y{y1: 70, y2: 210, x: 260},
+            Placement::Y { y1: 70, y2: 210, x: 260 })
-            RgbColor::YELLOW,
+        .set_color(RgbColor::YELLOW)
-            text_style_yellow_compact,
+        .set_text_style(text_style_yellow_compact)
-            1,
+        .set_tick_size(1)
-            1,
-        )
         .draw(&mut display)?;
 
-    Axis::new("Y Frac 0-100(7)",  0..100, Scale::RangeFraction(7))
+    Axis::new(0..100)
-        .into_drawable_axis(
+        .set_title("Y Frac 0-100(7)")
-            Placement::Y{y1: 60, y2: 180, x: 370},
+        .set_scale(Scale::RangeFraction(7))
-            RgbColor::BLUE,
+        .into_drawable_axis(Placement::Y { y1: 60, y2: 180, x: 370 })
-            text_style_white,
+        .set_color(RgbColor::BLUE)
-            3,
+        .set_text_style(text_style_white)
-            1,
+        .set_tick_size(3)
-        )
         .draw(&mut display)?;
 
-    Axis::new("Y Frac 0-200(4)",  0..200, Scale::RangeFraction(4))
+    Axis::new(0..200)
-        .into_drawable_axis(
+        .set_title("Y Frac 0-200(4)")
-            Placement::Y{y1: 90, y2: 220, x: 470},
+        .set_scale(Scale::RangeFraction(4))
-            RgbColor::RED,
+        .into_drawable_axis(Placement::Y { y1: 90, y2: 220, x: 470 })
-            text_style_yellow_compact,
+        .set_color(RgbColor::RED)
-            7,
+        .set_text_style(text_style_yellow_compact)
-            1,
+        .set_tick_size(7)
-        )
         .draw(&mut display)?;
 
-    Axis::new("X",  123..2137, Scale::Fixed(150))
+    Axis::new(123..2137)
-        .into_drawable_axis(
+        .set_title("X")
-            Placement::X{x1: 30, x2: 470, y: 250},
+        .set_scale(Scale::Fixed(150))
-            RgbColor::YELLOW,
+        .into_drawable_axis(Placement::X { x1: 30, x2: 470, y: 250 })
-            text_style_white,
+        .set_color(RgbColor::YELLOW)
-            2,
+        .set_text_style(text_style_white)
-            1,
+        .set_tick_size(2)
-        )
         .draw(&mut display)?;
 
-    Axis::new("Y",  0..2137, Scale::RangeFraction(15))
+    Axis::new(0..2137)
-        .into_drawable_axis(
+        .set_title("Y")
-            Placement::Y{y1: 10, y2: 250, x: 30},
+        .set_scale(Scale::RangeFraction(15))
-            RgbColor::WHITE,
+        .into_drawable_axis(Placement::Y { y1: 10, y2: 250, x: 30 })
-            text_style_white,
+        .set_color(RgbColor::WHITE)
-            2,
+        .set_text_style(text_style_white)
-            1,
+        .set_tick_size(2)
-        )
         .draw(&mut display)?;
 
 

src/axis.rs

@@ -1,8 +1,15 @@
 use core::ops::Range;
-use embedded_graphics::prelude::*;
+use core::fmt::Write;
-use embedded_graphics::style::{TextStyle};
+use heapless::{consts::*, String};
+
+use embedded_graphics::{
+    prelude::*,
+    style::{TextStyle, PrimitiveStyle},
+    primitives::Line,
+    fonts::Text,
+};
+use crate::range_conv::Scalable;
 
-use crate::drawable_axis::DrawableAxis;
 
 pub enum Placement {
     X {
@@ -22,24 +29,160 @@ pub enum Scale {
     RangeFraction(usize),
 }
 
+impl Default for Scale {
+    fn default() -> Self {
+        Scale::RangeFraction(5)
+    }
+}
+
 pub struct Axis<'a> {
-    title: &'a str,
     range: Range<i32>,
-    scale: Scale,
+    title: Option<&'a str>,
+    scale: Option<Scale>,
 }
 
 impl<'a> Axis<'a>
 {
-    pub fn new(title: &'a str, range: Range<i32>, scale: Scale) -> Axis<'a> {
+    pub fn new(range: Range<i32>) -> Axis<'a> {
-        Axis{title, range, scale}
+        Axis { range, title: None, scale: None }
     }
 
-    pub fn into_drawable_axis<C, F>(self, placement: Placement, plot_color: C, text_style: TextStyle<C, F>, tick_height: usize, thickness: usize) -> DrawableAxis<'a, C, F>
+    pub fn set_scale(mut self, scale: Scale) -> Axis<'a> {
+        self.scale = Some(scale);
+        self
+    }
+
+    pub fn set_title(mut self, title: &'a str) -> Axis<'a> {
+        self.title = Some(title);
+        self
+    }
+
+    pub fn into_drawable_axis<C, F>(self, placement: Placement) -> DrawableAxis<'a, C, F>
+        where
+            C: PixelColor + Default,
+            F: Font,
+            TextStyle<C, F>: Clone + Default,
+    {
+        DrawableAxis{
+            axis: self,
+            placement,
+            color: None,
+            text_style: None,
+            tick_size: None,
+            thickness: None,
+        }
+    }
+}
+
+pub struct DrawableAxis<'a, C, F>
     where
         C: PixelColor,
         F: Font,
-            TextStyle<C, F>: Clone,
+        TextStyle<C, F>: Clone + Default,
 {
-        DrawableAxis::new(self.title,placement,self.range,self.scale,plot_color,text_style,tick_height,thickness)
+    axis: Axis<'a>,
+    placement: Placement,
+    color: Option<C>,
+    text_style: Option<TextStyle<C, F>>,
+    tick_size: Option<usize>,
+    thickness: Option<usize>,
+}
+
+impl<'a, C, F> DrawableAxis<'a, C, F>
+    where
+        C: PixelColor + Default,
+        F: Font,
+        TextStyle<C, F>: Clone + Default,
+{
+    pub fn set_color(mut self, val: C) -> DrawableAxis<'a, C, F> {
+        self.color = Some(val);
+        self
+    }
+    pub fn set_text_style(mut self, val: TextStyle<C, F>) -> DrawableAxis<'a, C, F> {
+        self.text_style = Some(val);
+        self
+    }
+    pub fn set_tick_size(mut self, val: usize) -> DrawableAxis<'a, C, F> {
+        self.tick_size = Some(val);
+        self
+    }
+    pub fn set_thickness(mut self, val: usize) -> DrawableAxis<'a, C, F> {
+        self.thickness = Some(val);
+        self
+    }
+}
+
+
+impl<'a, C, F> Drawable<C> for DrawableAxis<'a, C, F>
+    where
+        C: PixelColor + Default,
+        F: Font + Copy,
+        TextStyle<C, F>: Clone + Default,
+{
+    fn draw<D: DrawTarget<C>>(self, display: &mut D) -> Result<(), D::Error> {
+        let color = self.color.unwrap_or_default();
+        let text_style = self.text_style.unwrap_or_default();
+        let thickness = self.thickness.unwrap_or(1);
+        let tick_size = self.tick_size.unwrap_or(2);
+
+
+        let scale_marks = match self.axis.scale.unwrap_or_default() {
+            Scale::Fixed(interval) => {
+                self.axis.range.clone().into_iter().step_by(interval)
+            }
+            Scale::RangeFraction(fraction) => {
+                let len = self.axis.range.len();
+                self.axis.range.clone().into_iter().step_by(len / fraction)
+            }
+        };
+        match self.placement {
+            Placement::X { x1, x2, y } => {
+                Line { start: Point { x: x1, y }, end: Point { x: x2, y } }
+                    .into_styled(PrimitiveStyle::with_stroke(color, thickness as u32))
+                    .draw(display)?;
+                if let Some(title) = self.axis.title {
+                    let title = Text::new(title, Point { x: x1, y: y + 10 })
+                        .into_styled(text_style);
+                    let title = title.translate(Point { x: (x2 - x1) / 2 - title.size().width as i32 / 2, y: 0 });
+                    title.draw(display)?;
+                }
+
+                for mark in scale_marks {
+                    let x = mark.scale_between_ranges(&self.axis.range, &(x1..x2));
+                    Line { start: Point { x, y: y - tick_size as i32 }, end: Point { x, y: y + tick_size as i32 } }
+                        .into_styled(PrimitiveStyle::with_stroke(color, thickness as u32))
+                        .draw(display)?;
+                    let mut buf: String::<U8> = String::new();
+                    write!(buf, "{}", mark).unwrap();
+                    Text::new(&buf, Point { x: x + 2, y: y + 2 }).into_styled(text_style).draw(display)?;
+                }
+            }
+            Placement::Y { y1, y2, x } => {
+                Line { start: Point { x, y: y1 }, end: Point { x, y: y2 } }
+                    .into_styled(PrimitiveStyle::with_stroke(color, thickness as u32))
+                    .draw(display)?;
+
+                let mut max_tick_text_width = 0;
+                for mark in scale_marks {
+                    let y = mark.scale_between_ranges(&self.axis.range, &(y2..y1));
+                    Line { start: Point { x: x - tick_size as i32, y }, end: Point { x: x + tick_size as i32, y } }
+                        .into_styled(PrimitiveStyle::with_stroke(color, thickness as u32))
+                        .draw(display)?;
+                    let mut buf: String::<U8> = String::new();
+                    write!(buf, "{}", mark).unwrap();
+                    let tick_val = Text::new(&buf, Point { x, y }).into_styled(text_style);
+                    let tick_val = tick_val.translate(Point { x: -(tick_val.size().width as i32) - 2, y: 2 });
+                    if tick_val.size().width > max_tick_text_width { max_tick_text_width = tick_val.size().width }
+                    tick_val.draw(display)?;
+                }
+                if let Some(title) = self.axis.title {
+                    let title = Text::new(title, Point { x, y: y1 })
+                        .into_styled(text_style);
+                    let title = title.translate(Point { x: -(title.size().width as i32) - max_tick_text_width as i32 - tick_size as i32 - 2, y: (y2 - y1) / 2 });
+                    title.draw(display)?;
+                }
+            }
+        }
+        Ok(())
     }
 }

src/drawable_axis.rs

@@ -1,106 +0,0 @@
-use embedded_graphics::prelude::*;
-use crate::axis::{Placement, Scale};
-use core::ops::Range;
-use embedded_graphics::style::{TextStyle, PrimitiveStyle};
-use embedded_graphics::fonts::Text;
-use crate::range_conv::Scalable;
-use embedded_graphics::primitives::Line;
-use heapless::{consts::*, String};
-use core::fmt::Write;
-
-
-pub struct DrawableAxis<'a, C, F>
-    where
-        C: PixelColor,
-        F: Font,
-        TextStyle<C, F>: Clone,
-{
-    title: &'a str,
-    placement: Placement,
-    range: Range<i32>,
-    scale: Scale,
-    color: C,
-    text_style: TextStyle<C, F>,
-    tick_size: usize,
-    thickness: usize,
-}
-
-impl<'a, C, F> DrawableAxis<'a, C, F>
-    where
-        C: PixelColor,
-        F: Font,
-        TextStyle<C, F>: Clone,
-{
-    pub(in crate) fn new(title: &'a str, placement: Placement, range: Range<i32>, scale: Scale, color: C, text_style: TextStyle<C, F>, tick_height: usize, thickness: usize) -> DrawableAxis<'a, C, F> {
-        DrawableAxis { title, placement, range, scale, color, text_style, tick_size: tick_height, thickness }
-    }
-
-    pub fn size(&self) -> Point {
-        Point { x: 50, y: 50 }
-    }
-}
-
-
-impl<'a, C, F> Drawable<C> for DrawableAxis<'a, C, F>
-    where
-        C: PixelColor,
-        F: Font + Copy,
-        TextStyle<C, F>: Clone,
-{
-    fn draw<D: DrawTarget<C>>(self, display: &mut D) -> Result<(), D::Error> {
-        let scale_marks = match self.scale {
-            Scale::Fixed(interval) => {
-                self.range.clone().into_iter().step_by(interval)
-            }
-            Scale::RangeFraction(fraction) => {
-                let len = self.range.len();
-                self.range.clone().into_iter().step_by(len / fraction)
-            }
-        };
-        match self.placement {
-            Placement::X { x1, x2, y } => {
-                Line { start: Point { x: x1, y }, end: Point { x: x2, y } }
-                    .into_styled(PrimitiveStyle::with_stroke(self.color, self.thickness as u32))
-                    .draw(display)?;
-                let title = Text::new(self.title, Point { x: x1, y: y + 10 })
-                    .into_styled(self.text_style);
-                let title = title.translate(Point { x: (x2 - x1) / 2 - title.size().width as i32 / 2, y: 0 });
-                title.draw(display)?;
-
-                for mark in scale_marks {
-                    let x = mark.scale_between_ranges(&self.range, &(x1..x2));
-                    Line { start: Point { x, y: y - self.tick_size as i32 }, end: Point { x, y: y + self.tick_size as i32 } }
-                        .into_styled(PrimitiveStyle::with_stroke(self.color, self.thickness as u32))
-                        .draw(display)?;
-                    let mut buf: String::<U8> = String::new();
-                    write!(buf, "{}", mark).unwrap();
-                    Text::new(&buf, Point { x: x + 2, y: y + 2 }).into_styled(self.text_style).draw(display)?;
-                }
-            }
-            Placement::Y { y1, y2, x } => {
-                Line { start: Point { x, y: y1 }, end: Point { x, y: y2 } }
-                    .into_styled(PrimitiveStyle::with_stroke(self.color, self.thickness as u32))
-                    .draw(display)?;
-
-                let mut max_tick_text_width = 0;
-                for mark in scale_marks {
-                    let y = mark.scale_between_ranges(&self.range, &(y2..y1));
-                    Line { start: Point { x: x - self.tick_size as i32, y }, end: Point { x: x + self.tick_size as i32, y } }
-                        .into_styled(PrimitiveStyle::with_stroke(self.color, self.thickness as u32))
-                        .draw(display)?;
-                    let mut buf: String::<U8> = String::new();
-                    write!(buf, "{}", mark).unwrap();
-                    let tick_val = Text::new(&buf, Point { x, y }).into_styled(self.text_style);
-                    let tick_val = tick_val.translate(Point { x: -(tick_val.size().width as i32) - 2, y: 2 });
-                    if tick_val.size().width > max_tick_text_width { max_tick_text_width = tick_val.size().width }
-                    tick_val.draw(display)?;
-                }
-                let title = Text::new(self.title, Point { x, y: y1 })
-                    .into_styled(self.text_style);
-                let title = title.translate(Point { x: -(title.size().width as i32) - max_tick_text_width as i32 - self.tick_size as i32 - 2, y: (y2 - y1) / 2 });
-                title.draw(display)?;
-            }
-        }
-        Ok(())
-    }
-}

src/lib.rs

@@ -6,4 +6,3 @@ pub mod polyplot;
 pub mod single_plot;
 
 mod range_conv;
-mod drawable_axis;

src/single_plot.rs

@@ -73,39 +73,34 @@ impl<'a, C> Drawable<C> for DrawableSinglePlot<'a, C>
         C: PixelColor + Default,
 {
     fn draw<D: DrawTarget<C>>(self, display: &mut D) -> Result<(), D::Error> {
-        let color = match self.color {
+        let color = self.color.unwrap_or_default();
-            None => C::default(),
+        let text_color = self.text_color.unwrap_or(color);
-            Some(c) => c,
+        let axis_color = self.axis_color.unwrap_or(color);
-        };
+        let thickness = self.thickness.unwrap_or(2);
-        let text_color = match self.text_color {
+        let axis_thickness = self.axis_thickness.unwrap_or(thickness);
-            None => color,
-            Some(c) => c,
-        };
-        let axis_color = match self.axis_color {
-            None => color,
-            Some(c) => c,
-        };
-
-        let thickness = match self.thickness {
-            None => 2,
-            Some(t) => t,
-        };
-
-        let axis_thickness = match self.axis_thickness {
-            None => thickness,
-            Some(t) => t,
-        };
 
         let text_style = TextStyleBuilder::new(Font6x8)
             .text_color(text_color)
             .build();
 
-        Axis::new("X", self.plot.curve.x_range.clone(), self.plot.x_scale)
+        Axis::new( self.plot.curve.x_range.clone())
-            .into_drawable_axis(Placement::X { x1: self.top_left.x, x2: self.bottom_right.x, y: self.bottom_right.y }, axis_color, text_style, 2, axis_thickness)
+            .set_title("X")
+            .set_scale(self.plot.x_scale)
+            .into_drawable_axis(Placement::X { x1: self.top_left.x, x2: self.bottom_right.x, y: self.bottom_right.y })
+            .set_color(axis_color)
+            .set_text_style(text_style)
+            .set_tick_size(2)
+            .set_thickness(axis_thickness)
             .draw(display)?;
 
-        Axis::new("Y", self.plot.curve.y_range.clone(), self.plot.y_scale)
+        Axis::new(self.plot.curve.y_range.clone())
-            .into_drawable_axis(Placement::Y { y1: self.top_left.y, y2: self.bottom_right.y, x: self.top_left.x }, axis_color, text_style, 2,axis_thickness)
+            .set_title("Y")
+            .set_scale(self.plot.y_scale)
+            .into_drawable_axis(Placement::Y { y1: self.top_left.y, y2: self.bottom_right.y, x: self.top_left.x })
+            .set_color(axis_color)
+            .set_text_style(text_style)
+            .set_tick_size(2)
+            .set_thickness(axis_thickness)
             .draw(display)?;
 
         self.plot.curve.into_drawable_curve(