Improve screen scaling behavior

Cargo.lock

@@ -324,6 +324,8 @@ dependencies = [
 name = "ebu-dsp"
 version = "0.1.0"
 dependencies = [
+ "femtovg",
+ "image",
  "nih_plug",
 ]
 
@@ -368,9 +370,9 @@ dependencies = [
 
 [[package]]
 name = "femtovg"
-version = "0.18.1"
+version = "0.19.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0530af3119be5658d8c1f7e69248d46e2c59e500dc2ef373cf25b355158ef101"
+checksum = "be5d925785ad33d7b0ae2b445d9f157c3ab42ff3c515fff0b46d53d4a86c43c5"
 dependencies = [
  "bitflags 2.10.0",
  "bytemuck",
@@ -384,6 +386,7 @@ dependencies = [
  "rgb",
  "rustybuzz",
  "slotmap",
+ "ttf-parser",
  "unicode-bidi",
  "unicode-segmentation",
  "wasm-bindgen",

Cargo.toml

@@ -12,7 +12,7 @@ nih_plug = { git = "https://github.com/robbert-vdh/nih-plug", version = "0.0.0",
 parking_lot = "0.12.5"
 baseview = { git = "https://github.com/RustAudio/baseview", rev = "237d323c729f3aa99476ba3efa50129c5e86cad3", features = ["opengl"]}
 crossbeam = "0.8.4"
-femtovg = "0.18.1"
+femtovg = "0.19.3"
 serde = { version = "1.0.228", features = ["derive"] }
 image = { version = "0.25.9", default-features = false, features = ["png"] }
 

ebu-dsp/Cargo.toml

@@ -4,4 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+femtovg = "0.19.3"
+image = { version = "0.25.9", default-features = false, features = ["png"] }
 nih_plug = { git = "https://github.com/robbert-vdh/nih-plug", version = "0.0.0", default-features = false }

ebu-dsp/src/gui/mod.rs

@@ -0,0 +1,187 @@
+use std::sync::{Arc, atomic::Ordering};
+
+use femtovg::{Canvas, ImageFlags, ImageId, Paint, Path, renderer::OpenGl};
+use nih_plug::prelude::AtomicF32;
+
+use crate::{Rect, ScaledRect};
+
+pub struct SpriteSheet {
+    scale_factor: Arc<AtomicF32>,
+    image: Result<ImageId, String>,
+    width: usize,
+    height: usize,
+    frame_width: usize,
+    frame_height: usize,
+    frames_x: usize,
+}
+
+impl SpriteSheet {
+    pub fn empty() -> Self {
+        Self {
+            scale_factor: Arc::new(AtomicF32::new(1.0)),
+            image: Err("No image loaded".to_owned()),
+            width: 0,
+            height: 0,
+            frame_width: 0,
+            frame_height: 0,
+            frames_x: 0,
+        }
+    }
+    pub fn new(
+        canvas: &mut Canvas<OpenGl>,
+        data: &[u8],
+        scale_factor: Arc<AtomicF32>,
+        frame_width: usize,
+        frame_height: usize,
+        frames: usize,
+    ) -> Self {
+        let image = canvas
+            .load_image_mem(data, ImageFlags::empty())
+            .map_err(|e| format!("{e:?}"));
+        if let Ok(image) = image {
+            let (width, height) = canvas.image_size(image).unwrap_or_default();
+            Self {
+                scale_factor,
+                image: Ok(image),
+                width,
+                height,
+                frame_width,
+                frame_height,
+                frames_x: width / frame_width,
+            }
+        } else {
+            Self {
+                scale_factor,
+                image,
+                width: 0,
+                height: 0,
+                frame_width,
+                frame_height,
+                frames_x: 0,
+            }
+        }
+    }
+    pub fn draw(&self, canvas: &mut Canvas<OpenGl>, x: f32, y: f32, frame: usize) {
+        let factor = self.scale_factor.load(Ordering::Relaxed);
+
+        let frame_x = frame % self.frames_x;
+        let frame_y = frame / self.frames_x;
+
+        let screen_rect = Rect {
+            x: x * factor,
+            y: y * factor,
+            width: self.frame_width as f32 * factor,
+            height: self.frame_height as f32 * factor,
+        };
+        let image_rect = Rect {
+            x: screen_rect.x - (frame_x * self.frame_width) as f32 * factor,
+            y: screen_rect.y - (frame_y * self.frame_height) as f32 * factor,
+            width: self.width as f32 * factor,
+            height: self.height as f32 * factor,
+        };
+
+        let mut screen_path = Path::new();
+        screen_path.rect(
+            screen_rect.x,
+            screen_rect.y,
+            screen_rect.width,
+            screen_rect.height,
+        );
+        if let Ok(image) = self.image {
+            canvas.fill_path(
+                &screen_path,
+                &Paint::image(
+                    image,
+                    image_rect.x,
+                    image_rect.y,
+                    image_rect.width,
+                    image_rect.height,
+                    0.0,
+                    1.0,
+                ),
+            );
+        }
+    }
+    pub fn screen_bounds(&self, x: f32, y: f32) -> ScaledRect {
+        ScaledRect::new_from(
+            self.scale_factor.clone(),
+            (x, y, self.frame_width as f32, self.frame_height as f32),
+        )
+    }
+}
+
+pub struct Sprite {
+    scale_factor: Arc<AtomicF32>,
+    image: Result<ImageId, String>,
+    width: usize,
+    height: usize,
+}
+impl Sprite {
+    pub fn empty() -> Self {
+        Self {
+            scale_factor: Arc::new(AtomicF32::new(1.0)),
+            image: Err("No image loaded".to_owned()),
+            width: 0,
+            height: 0,
+        }
+    }
+    pub fn new(canvas: &mut Canvas<OpenGl>, data: &[u8], scale_factor: Arc<AtomicF32>) -> Self {
+        let image = canvas
+            .load_image_mem(data, ImageFlags::empty())
+            .map_err(|e| format!("{e:?}"));
+        if let Ok(image) = image {
+            let (width, height) = canvas.image_size(image).unwrap_or_default();
+            Self {
+                scale_factor,
+                image: Ok(image),
+                width,
+                height,
+            }
+        } else {
+            Self {
+                scale_factor,
+                image,
+                width: 0,
+                height: 0,
+            }
+        }
+    }
+    pub fn draw(&self, canvas: &mut Canvas<OpenGl>, x: f32, y: f32, alpha: f32) {
+        let factor = self.scale_factor.load(Ordering::Relaxed);
+
+        let screen_rect = Rect {
+            x: x * factor,
+            y: y * factor,
+            width: self.width as f32 * factor,
+            height: self.height as f32 * factor,
+        };
+
+        let mut screen_path = Path::new();
+        screen_path.rect(
+            screen_rect.x,
+            screen_rect.y,
+            screen_rect.width,
+            screen_rect.height,
+        );
+        if let Ok(image) = self.image {
+            canvas.fill_path(
+                &screen_path,
+                &Paint::image(
+                    image,
+                    screen_rect.x,
+                    screen_rect.y,
+                    screen_rect.width,
+                    screen_rect.height,
+                    0.0,
+                    alpha,
+                ),
+            );
+        }
+    }
+    pub fn screen_bounds(&self, x: f32, y: f32) -> ScaledRect {
+        ScaledRect::new_from(
+            self.scale_factor.clone(),
+            (x, y, self.width as f32, self.height as f32),
+        )
+    }
+}

ebu-dsp/src/lib.rs

@@ -4,13 +4,16 @@ mod comp;
 mod decibel;
 mod eq;
 mod freq_split;
+mod gui;
 mod meter;
 mod ring_buffer;
 mod smoother;
 mod traits;
 
 use std::{
-    fmt::Debug, ops::Add, time::Duration
+    fmt::Debug,
+    sync::{Arc, atomic::Ordering},
+    time::Duration,
 };
 
 pub use amplitude::Amplitude;
@@ -19,42 +22,159 @@ pub use comp::{Compressor, CompressorState};
 pub use decibel::Decibel;
 pub use eq::{Equalizer, EqualizerState};
 pub use freq_split::{FreqSplitter, FreqSplitterState};
+pub use gui::{SpriteSheet, Sprite};
+use nih_plug::prelude::AtomicF32;
 pub use traits::{FloatFormatter, IntFormatter, Lerp, Processor};
 
-pub struct Rect<T> {
+#[derive(Copy, Clone, Debug, Default, PartialEq)]
-    pub x: T,
+pub struct Point {
-    pub y: T,
+    x: f32,
-    pub width: T,
+    y: f32,
-    pub height: T,
 }
-impl<T: Debug> Debug for Rect<T> {
+impl Point {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    pub const fn new(x: f32, y: f32) -> Self {
-        f.debug_struct("Rect")
+        Self { x, y }
-            .field("x", &self.x)
-            .field("y", &self.y)
-            .field("width", &self.width)
-            .field("height", &self.height)
-            .finish()
     }
 }
-impl<T: PartialOrd + Add<Output = T> + Copy> Rect<T> {
+impl From<(f32, f32)> for Point {
-    pub fn contains(&self, value: (T, T)) -> bool {
+    fn from(value: (f32, f32)) -> Self {
-        value.0 >= self.x
+        Point {
-            && value.1 >= self.y
+            x: value.0,
-            && value.0 < self.x + self.width
+            y: value.1,
-            && value.1 < self.y + self.height
+        }
     }
 }
-impl<T> Default for Rect<T>
+
-where
+#[derive(Clone, Debug, Default)]
-    T: Default,
+pub struct ScaledPoint {
-{
+    pub factor: Arc<AtomicF32>,
-    fn default() -> Self {
+    pub x: f32,
+    pub y: f32,
+}
+impl PartialEq for ScaledPoint {
+    fn eq(&self, other: &Self) -> bool {
+        self.factor.load(Ordering::Acquire) == other.factor.load(Ordering::Acquire)
+            && self.x == other.x
+            && self.y == other.y
+    }
+}
+impl ScaledPoint {
+    pub fn new(factor: Arc<AtomicF32>) -> Self {
         Self {
-            x: Default::default(),
+            factor,
-            y: Default::default(),
+            ..Default::default()
-            width: Default::default(),
+        }
-            height: Default::default(),
+    }
+    pub fn new_from<P>(factor: Arc<AtomicF32>, point: P) -> Self
+    where
+        P: Into<Point>,
+    {
+        let point = point.into();
+        Self {
+            factor,
+            x: point.x,
+            y: point.y,
+        }
+    }
+    pub fn set<P>(&mut self, point: P)
+    where
+        P: Into<Point>,
+    {
+        let point = point.into();
+        self.x = point.x;
+        self.y = point.y;
+    }
+    pub fn set_scaled<P>(&mut self, point: P)
+    where
+        P: Into<Point>,
+    {
+        let factor = self.factor.load(Ordering::Acquire);
+        let point = point.into();
+        self.x = point.x / factor;
+        self.y = point.y / factor;
+    }
+    pub fn as_point(&self) -> Point {
+        let factor = self.factor.load(Ordering::Acquire);
+        Point {
+            x: self.x * factor,
+            y: self.y * factor,
+        }
+    }
+}
+
+#[derive(Copy, Clone, Debug, Default, PartialEq)]
+pub struct Rect {
+    pub x: f32,
+    pub y: f32,
+    pub width: f32,
+    pub height: f32,
+}
+impl Rect {
+    pub fn contains<P>(&self, value: P) -> bool
+    where
+        P: Into<Point>,
+    {
+        let value = value.into();
+        value.x >= self.x
+            && value.y >= self.y
+            && value.x < self.x + self.width
+            && value.y < self.y + self.height
+    }
+}
+impl From<(f32, f32, f32, f32)> for Rect {
+    fn from(value: (f32, f32, f32, f32)) -> Self {
+        Rect {
+            x: value.0,
+            y: value.1,
+            width: value.2,
+            height: value.3,
+        }
+    }
+}
+#[derive(Clone, Debug, Default)]
+pub struct ScaledRect {
+    pub factor: Arc<AtomicF32>,
+    pub x: f32,
+    pub y: f32,
+    pub width: f32,
+    pub height: f32,
+}
+impl PartialEq for ScaledRect {
+    fn eq(&self, other: &Self) -> bool {
+        self.factor.load(Ordering::Acquire) == other.factor.load(Ordering::Acquire)
+            && self.x == other.x
+            && self.y == other.y
+            && self.width == other.width
+            && self.height == other.height
+    }
+}
+impl ScaledRect {
+    pub fn new(factor: Arc<AtomicF32>) -> Self {
+        Self {
+            factor,
+            ..Default::default()
+        }
+    }
+    pub fn new_from<R>(factor: Arc<AtomicF32>, rect: R) -> Self
+    where
+        R: Into<Rect>,
+    {
+        let rect = rect.into();
+        Self {
+            factor,
+            x: rect.x,
+            y: rect.y,
+            width: rect.width,
+            height: rect.height,
+        }
+    }
+    pub fn as_rect(&self) -> Rect {
+        let factor = self.factor.load(Ordering::Acquire);
+        Rect {
+            x: self.x * factor,
+            y: self.y * factor,
+            width: self.width * factor,
+            height: self.height * factor,
         }
     }
 }
@@ -194,4 +314,3 @@ pub fn rms<const N: usize>(sample_buffer: &RingBuffer<f64, N>, last_rms: f64) ->
     last_rms.powf(2.0)
         + (1.0 / N as f64) * (sample_buffer[0].powf(2.0) - sample_buffer[N - 1].powf(2.0))
 }
-

src/editor.rs

@@ -8,6 +8,8 @@ use crossbeam::atomic::AtomicCell;
 use nih_plug::params::persist::PersistentField;
 use serde::{Deserialize, Serialize};
 
+use crate::window::EditorWindow;
+
 #[derive(Debug, Serialize, Deserialize)]
 pub struct EditorState {
     /// The window's size in logical pixels before applying `scale_factor`.
@@ -20,7 +22,10 @@ pub struct EditorState {
 impl EditorState {
     pub fn from_size(size: (u32, u32)) -> Arc<Self> {
         Arc::new(Self {
-            size: AtomicCell::new(size),
+            size: AtomicCell::new((
+                (size.0 as f32 * EditorWindow::VIRTUAL_SCALE) as u32,
+                (size.1 as f32 * EditorWindow::VIRTUAL_SCALE) as u32,
+            )),
             open: AtomicBool::new(false),
         })
     }
@@ -47,7 +52,7 @@ impl<'a> PersistentField<'a, EditorState> for Arc<EditorState> {
 
 pub struct EditorHandle {
     pub state: Arc<EditorState>,
-    pub window: WindowHandle
+    pub window: WindowHandle,
 }
 unsafe impl Send for EditorHandle {}
 impl Drop for EditorHandle {

src/gui.rs

@@ -1,40 +1,38 @@
-use crate::{parameters::PluginParams, window::EditorWindow};
+use crate::parameters::PluginParams;
 use baseview::{
     Event, EventStatus, MouseButton, MouseEvent, WindowEvent, WindowHandler, gl::GlContext,
 };
-use crossbeam::atomic::AtomicCell;
+use ebu_dsp::{ScaledPoint, ScaledRect, Sprite, SpriteSheet};
-use ebu_dsp::Rect;
+use femtovg::{Canvas, Color, FontId, Paint, Path, renderer::OpenGl};
-use femtovg::{Canvas, Color, FontId, ImageFlags, ImageId, Paint, Path, renderer::OpenGl};
 use nih_plug::prelude::*;
-use std::sync::Arc;
+use std::sync::{Arc, atomic::Ordering};
 
 const DROID_SANS_FONT: &'static [u8] = include_bytes!("../assets/DroidSans.ttf");
 
 const FRESHENER_IMAGE: &'static [u8] = include_bytes!("../assets/AirFreshener/sheet.png");
 const NOT_SO_FRESH_BG_IMAGE: &'static [u8] = include_bytes!("../assets/AirFreshener/bg0.png");
 const FRESH_DUMBLEDORE_BG_IMAGE: &'static [u8] = include_bytes!("../assets/AirFreshener/bg1.png");
-const FRESHENER_FRAMES: u32 = 256;
+const FRESHENER_FRAMES: usize = 256;
-const FRESHENER_FRAMES_X: u32 = 20;
+const FRESHENER_FRAME_WIDTH: usize = 73;
-const FRESHENER_FRAMES_Y: u32 = 13;
+const FRESHENER_FRAME_HEIGHT: usize = 144;
-const FRESHENER_FRAME_WIDTH: f32 = 73.0;
+const FRESHENER_SCREEN_X: f32 = 120.0;
-const FRESHENER_FRAME_HEIGHT: f32 = 144.0;
+const FRESHENER_SCREEN_Y: f32 = 20.0;
 
 pub struct PluginGui {
     font: Result<FontId, String>,
     params: Arc<PluginParams>,
     canvas: Option<Canvas<OpenGl>>,
     _gui_context: Arc<dyn GuiContext>,
-    scaling_factor: Arc<AtomicCell<Option<f32>>>,
+    scaling_factor: Arc<AtomicF32>,
 
-    freshener_screen_bounds: Rect<f32>,
+    freshener_image: SpriteSheet,
-
+    freshener_image_bounds: ScaledRect,
-    freshener_image: Result<ImageId, String>,
+    not_so_fresh_image: Sprite,
-    not_so_fresh_image: Result<ImageId, String>,
+    fresh_dumbledore_image: Sprite,
-    fresh_dumbledore_image: Result<ImageId, String>,
 
     dirty: bool,
-    mouse_position: (f32, f32),
+    mouse_position: ScaledPoint,
-    drag_start_mouse_pos: (f32, f32),
+    drag_start_mouse_pos: ScaledPoint,
     drag_start_parameter_value: f32,
     dragging: bool,
 }
@@ -42,13 +40,13 @@ pub struct PluginGui {
 fn create_canvas(
     context: &GlContext,
     params: &PluginParams,
-    scaling_factor: &AtomicCell<Option<f32>>,
+    scaling_factor: &AtomicF32,
 ) -> Result<Canvas<OpenGl>, &'static str> {
     let renderer = unsafe { OpenGl::new_from_function(|s| context.get_proc_address(s)) }
         .map_err(|_| "Failed to create OpenGL renderer")?;
     let mut canvas = Canvas::new(renderer).map_err(|_| "Failed to create femtovg canvas")?;
     let (width, height) = params.editor_state.size();
-    canvas.set_size(width, height, scaling_factor.load().unwrap_or(1.0));
+    canvas.set_size(width, height, scaling_factor.load(Ordering::Relaxed));
     Ok(canvas)
 }
 
@@ -57,7 +55,7 @@ impl PluginGui {
         window: &mut baseview::Window<'_>,
         gui_context: Arc<dyn GuiContext>,
         params: Arc<PluginParams>,
-        scaling_factor: Arc<AtomicCell<Option<f32>>>,
+        scaling_factor: Arc<AtomicF32>,
     ) -> Self {
         let mut this = Self {
             font: Err("Not loaded".to_owned()),
@@ -66,14 +64,14 @@ impl PluginGui {
             _gui_context: gui_context,
             scaling_factor: scaling_factor.clone(),
             dirty: true,
-            mouse_position: (0.0, 0.0),
+            mouse_position: ScaledPoint::new(scaling_factor.clone()),
-            drag_start_mouse_pos: (0.0, 0.0),
+            drag_start_mouse_pos: ScaledPoint::new(scaling_factor.clone()),
             drag_start_parameter_value: 0.0,
             dragging: false,
-            freshener_image: Err("Not loaded".to_owned()),
+            freshener_image: SpriteSheet::empty(),
-            fresh_dumbledore_image: Err("Not loaded".to_owned()),
+            freshener_image_bounds: ScaledRect::new(scaling_factor.clone()),
-            not_so_fresh_image: Err("Not loaded".to_owned()),
+            fresh_dumbledore_image: Sprite::empty(),
-            freshener_screen_bounds: Rect::default(),
+            not_so_fresh_image: Sprite::empty(),
         };
 
         if let Some(context) = window.gl_context() {
@@ -84,15 +82,24 @@ impl PluginGui {
                 this.font = canvas
                     .add_font_mem(DROID_SANS_FONT)
                     .map_err(|err| format!("{:?}", err));
-                this.freshener_image = canvas
+                this.freshener_image = SpriteSheet::new(
-                    .load_image_mem(FRESHENER_IMAGE, ImageFlags::empty())
+                    &mut canvas,
-                    .map_err(|err| format!("{:?}", err));
+                    FRESHENER_IMAGE,
-                this.fresh_dumbledore_image = canvas
+                    scaling_factor.clone(),
-                    .load_image_mem(FRESH_DUMBLEDORE_BG_IMAGE, ImageFlags::empty())
+                    FRESHENER_FRAME_WIDTH,
-                    .map_err(|err| format!("{:?}", err));
+                    FRESHENER_FRAME_HEIGHT,
-                this.not_so_fresh_image = canvas
+                    FRESHENER_FRAMES,
-                    .load_image_mem(NOT_SO_FRESH_BG_IMAGE, ImageFlags::empty())
+                );
-                    .map_err(|err| format!("{:?}", err));
+                this.freshener_image_bounds = this
+                    .freshener_image
+                    .screen_bounds(FRESHENER_SCREEN_X, FRESHENER_SCREEN_Y);
+                this.fresh_dumbledore_image = Sprite::new(
+                    &mut canvas,
+                    FRESH_DUMBLEDORE_BG_IMAGE,
+                    scaling_factor.clone(),
+                );
+                this.not_so_fresh_image =
+                    Sprite::new(&mut canvas, NOT_SO_FRESH_BG_IMAGE, scaling_factor.clone());
                 this.canvas = Some(canvas);
             }
             unsafe {
@@ -115,15 +122,6 @@ impl PluginGui {
         */
         this
     }
-    fn scaling_factor(&self) -> f32 {
-        if let Some(factor) = self.scaling_factor.load() {
-            factor
-        } else if let Some(canvas) = &self.canvas {
-            canvas.width() as f32 / EditorWindow::WINDOW_SIZE.0 as f32
-        } else {
-            1.0
-        }
-    }
 }
 
 impl WindowHandler for PluginGui {
@@ -131,7 +129,7 @@ impl WindowHandler for PluginGui {
         if self.canvas.is_none() {
             return;
         }
-        let scaling_factor = self.scaling_factor();
+        let scaling_factor = self.scaling_factor.load(Ordering::Relaxed);
         let canvas = self.canvas.as_mut().unwrap();
 
         if !self.dirty {
@@ -139,12 +137,6 @@ impl WindowHandler for PluginGui {
         }
 
         let font_size = 12.0 * scaling_factor;
-        self.freshener_screen_bounds = Rect {
-            x: 120.0 * scaling_factor,
-            y: 20.0 * scaling_factor,
-            width: FRESHENER_FRAME_WIDTH * scaling_factor,
-            height: FRESHENER_FRAME_HEIGHT * scaling_factor,
-        };
 
         let context = match window.gl_context() {
             None => {
@@ -169,62 +161,11 @@ impl WindowHandler for PluginGui {
         let mut full_window_path = Path::new();
         full_window_path.rect(0.0, 0.0, width, height);
 
-        let mut freshener_path = Path::new();
+        let freshness = self.params.freshness.unmodulated_normalized_value();
-        freshener_path.rect(
+        let frame_index = (freshness * (FRESHENER_FRAMES - 1) as f32).floor() as usize;
-            self.freshener_screen_bounds.x,
+        self.not_so_fresh_image.draw(canvas, 0.0, 0.0, 1.0);
-            self.freshener_screen_bounds.y,
+        self.fresh_dumbledore_image.draw(canvas, 0.0, 0.0, freshness);
-            self.freshener_screen_bounds.width,
+        self.freshener_image.draw(canvas, FRESHENER_SCREEN_X, FRESHENER_SCREEN_Y, frame_index);
-            self.freshener_screen_bounds.height,
-        );
-
-        let frame_index = (self.params.freshness.unmodulated_normalized_value()
-            * (FRESHENER_FRAMES - 1) as f32)
-            .floor();
-        let frame_x = (frame_index % FRESHENER_FRAMES_X as f32).floor();
-        let frame_y = (frame_index / FRESHENER_FRAMES_X as f32).floor();
-
-        let freshener_image_source_rect = Rect {
-            x: self.freshener_screen_bounds.x - frame_x * FRESHENER_FRAME_WIDTH,
-            y: self.freshener_screen_bounds.y - frame_y * FRESHENER_FRAME_HEIGHT,
-            width: FRESHENER_FRAME_WIDTH * FRESHENER_FRAMES_X as f32 * scaling_factor,
-            height: FRESHENER_FRAME_HEIGHT * FRESHENER_FRAMES_Y as f32 * scaling_factor,
-        };
-
-        if let Ok(not_so_fresh) = self.not_so_fresh_image {
-            canvas.fill_path(
-                &full_window_path,
-                &Paint::image(not_so_fresh, 0.0, 0.0, width, height, 0.0, 1.0),
-            );
-        }
-        if let Ok(fresh_dumbledore) = self.fresh_dumbledore_image {
-            canvas.fill_path(
-                &full_window_path,
-                &Paint::image(
-                    fresh_dumbledore,
-                    0.0,
-                    0.0,
-                    width,
-                    height,
-                    0.0,
-                    self.params.freshness.unmodulated_normalized_value(),
-                ),
-            );
-        }
-
-        if let Ok(freshener) = self.freshener_image {
-            canvas.fill_path(
-                &freshener_path,
-                &Paint::image(
-                    freshener,
-                    freshener_image_source_rect.x,
-                    freshener_image_source_rect.y,
-                    freshener_image_source_rect.width,
-                    freshener_image_source_rect.height,
-                    0.0,
-                    1.0,
-                ),
-            );
-        }
 
         #[cfg(debug_assertions)]
         {
@@ -250,21 +191,8 @@ impl WindowHandler for PluginGui {
 
                 print("Debug version");
                 print(&format!("scaling_factor {:?}", scaling_factor));
-                print(&format!(
+                print(&format!("mouse_pos {:?}", self.mouse_position));
-                    "screen_bounds {:#?}",
+                print(&format!("frame_index {:?}", frame_index));
-                    self.freshener_screen_bounds
-                ));
-                print(&format!("frame_bounds {:#?}", freshener_image_source_rect));
-
-                if let Err(e) = &self.freshener_image {
-                    print(e);
-                }
-                if let Err(e) = &self.fresh_dumbledore_image {
-                    print(e);
-                }
-                if let Err(e) = &self.not_so_fresh_image {
-                    print(e);
-                }
             }
         }
 
@@ -282,23 +210,20 @@ impl WindowHandler for PluginGui {
         event: baseview::Event,
     ) -> baseview::EventStatus {
         let setter = ParamSetter::new(self._gui_context.as_ref());
-        let scaling_factor = self.scaling_factor();
+        let scaling_factor = self.scaling_factor.load(Ordering::Acquire);
         match event {
             Event::Window(WindowEvent::Resized(size)) => {
                 let phys_size = size.physical_size();
                 if let Some(canvas) = self.canvas.as_mut() {
-                    canvas.set_size(
+                    canvas.set_size(phys_size.width, phys_size.height, scaling_factor);
-                        phys_size.width,
-                        phys_size.height,
-                        self.scaling_factor.load().unwrap_or(1.0),
-                    );
                 }
                 self.dirty = true;
             }
             Event::Mouse(MouseEvent::CursorMoved { position, .. }) => {
-                self.mouse_position = (position.x as f32 / scaling_factor, position.y as f32 / scaling_factor);
+                self.mouse_position
+                    .set((position.x as f32, position.y as f32));
                 if self.dragging {
-                    let delta = self.mouse_position.1 - self.drag_start_mouse_pos.1;
+                    let delta = self.mouse_position.y - self.drag_start_mouse_pos.y;
                     let new_value =
                         (self.drag_start_parameter_value - delta * 0.01).clamp(0.0, 1.0);
                     setter.set_parameter_normalized(&self.params.freshness, new_value);
@@ -306,11 +231,14 @@ impl WindowHandler for PluginGui {
                 self.dirty = true;
             }
             Event::Mouse(MouseEvent::ButtonPressed { button, .. }) => {
-                self.dragging = self.freshener_screen_bounds.contains(self.mouse_position)
+                self.dragging = self
+                    .freshener_image_bounds
+                    .as_rect()
+                    .contains(self.mouse_position.as_point())
                     && button == MouseButton::Left;
                 if self.dragging {
                     setter.begin_set_parameter(&self.params.freshness);
-                    self.drag_start_mouse_pos = self.mouse_position;
+                    self.drag_start_mouse_pos = self.mouse_position.clone();
                     self.drag_start_parameter_value =
                         self.params.freshness.unmodulated_normalized_value();
                 }

src/window.rs

@@ -1,23 +1,21 @@
-use std::sync::{Arc, atomic::Ordering};
+use crate::{AirFreshener, editor::EditorHandle, gui::PluginGui, parameters::PluginParams};
 use baseview::{Window, WindowOpenOptions, WindowScalePolicy, gl::GlConfig};
-use crossbeam::atomic::AtomicCell;
+use nih_plug::prelude::AtomicF32;
 use nih_plug::{editor::Editor, plugin::Plugin};
-use crate::{AirFreshener, editor::EditorHandle, parameters::PluginParams, gui::PluginGui};
+use std::sync::{Arc, atomic::Ordering};
 
 pub struct EditorWindow {
     params: Arc<PluginParams>,
-    scaling_factor: Arc<AtomicCell<Option<f32>>>,
+    scaling_factor: Arc<AtomicF32>,
 }
 
 impl EditorWindow {
+    pub const VIRTUAL_SCALE: f32 = 1.0;
     pub const WINDOW_SIZE: (u32, u32) = (230, 320);
     pub fn new(params: Arc<PluginParams>) -> Self {
         Self {
             params,
-            #[cfg(target_os = "macos")]
+            scaling_factor: Arc::new(AtomicF32::new(EditorWindow::VIRTUAL_SCALE)),
-            scaling_factor: Arc::new(AtomicCell::new(None)),
-            #[cfg(not(target_os = "macos"))]
-            scaling_factor: Arc::new(AtomicCell::new(Some(1.0))),
         }
     }
 }
@@ -29,33 +27,43 @@ impl Editor for EditorWindow {
         context: Arc<dyn nih_plug::prelude::GuiContext>,
     ) -> Box<dyn std::any::Any + Send> {
         let (unscaled_width, unscaled_height) = self.params.editor_state.size();
-        let scaling_factor = self.scaling_factor.load();
+        let scaling_factor = self.scaling_factor.load(Ordering::Acquire);
         let move_scaling_factor = self.scaling_factor.clone();
         let gui_context = context.clone();
         let params = self.params.clone();
-        let window = Window::open_parented(&parent, WindowOpenOptions {
+        let window = Window::open_parented(
-            title: AirFreshener::NAME.to_owned(),
+            &parent,
-            size: baseview::Size { width: unscaled_width as f64, height: unscaled_height as f64 },
+            WindowOpenOptions {
-            scale: scaling_factor.map(|factor| WindowScalePolicy::ScaleFactor(factor as f64)).unwrap_or(WindowScalePolicy::SystemScaleFactor),
+                title: AirFreshener::NAME.to_owned(),
-            gl_config: Some(GlConfig {
+                size: baseview::Size {
-                version: (3, 2),
+                    width: unscaled_width as f64,
-                red_bits: 8,
+                    height: unscaled_height as f64,
-                green_bits: 8,
+                },
-                blue_bits: 8,
+                #[cfg(target_os = "macos")]
-                alpha_bits: 8,
+                scale: WindowScalePolicy::SystemScaleFactor,
-                samples: None,
+                #[cfg(not(target_os = "macos"))]
-                srgb: true,
+                scale: WindowScalePolicy::ScaleFactor(scaling_factor as f64),
-                double_buffer: true,
+                gl_config: Some(GlConfig {
-                vsync: false,
+                    version: (3, 2),
-              ..Default::default()  
+                    red_bits: 8,
-            })
+                    green_bits: 8,
-        }, move |window: &mut baseview::Window<'_>| -> PluginGui {
+                    blue_bits: 8,
-            PluginGui::new(window, gui_context, params, move_scaling_factor)
+                    alpha_bits: 8,
-        });
+                    samples: None,
+                    srgb: true,
+                    double_buffer: true,
+                    vsync: false,
+                    ..Default::default()
+                }),
+            },
+            move |window: &mut baseview::Window<'_>| -> PluginGui {
+                PluginGui::new(window, gui_context, params, move_scaling_factor)
+            },
+        );
         self.params.editor_state.open.store(true, Ordering::Release);
         Box::new(EditorHandle {
             state: self.params.editor_state.clone(),
-            window
+            window,
         })
     }
 
@@ -67,7 +75,7 @@ impl Editor for EditorWindow {
         if self.params.editor_state.is_open() {
             return false;
         }
-        self.scaling_factor.store(Some(factor));
+        self.scaling_factor.store(factor, Ordering::Release);
         true
     }