Refactor some image traits a bit

- Use `Size<u32>` were applicable.
- Rename `TextureStore` to `image::Storage`.
- Rename `TextureStoreEntry` to `image::storage::Entry`.
- Wire up `viewport_dimensions` to `iced_glow` for `Svg`.

wgpu/src/backend.rs

@@ -296,7 +296,7 @@ impl backend::Text for Backend {
 
 #[cfg(feature = "image_rs")]
 impl backend::Image for Backend {
-    fn dimensions(&self, handle: &iced_native::image::Handle) -> (u32, u32) {
+    fn dimensions(&self, handle: &iced_native::image::Handle) -> Size<u32> {
         self.image_pipeline.dimensions(handle)
     }
 }
@@ -306,7 +306,7 @@ impl backend::Svg for Backend {
     fn viewport_dimensions(
         &self,
         handle: &iced_native::svg::Handle,
-    ) -> (u32, u32) {
+    ) -> Size<u32> {
         self.image_pipeline.viewport_dimensions(handle)
     }
 }

wgpu/src/image.rs

@@ -10,7 +10,8 @@ use crate::Transformation;
 use atlas::Atlas;
 
 use iced_graphics::layer;
-use iced_native::Rectangle;
+use iced_native::{Rectangle, Size};
+
 use std::cell::RefCell;
 use std::mem;
 
@@ -262,7 +263,7 @@ impl Pipeline {
     }
 
     #[cfg(feature = "image_rs")]
-    pub fn dimensions(&self, handle: &image::Handle) -> (u32, u32) {
+    pub fn dimensions(&self, handle: &image::Handle) -> Size<u32> {
         let mut cache = self.raster_cache.borrow_mut();
         let memory = cache.load(handle);
 
@@ -270,7 +271,7 @@ impl Pipeline {
     }
 
     #[cfg(feature = "svg")]
-    pub fn viewport_dimensions(&self, handle: &svg::Handle) -> (u32, u32) {
+    pub fn viewport_dimensions(&self, handle: &svg::Handle) -> Size<u32> {
         let mut cache = self.vector_cache.borrow_mut();
         let svg = cache.load(handle);
 
@@ -515,15 +516,18 @@ fn add_instances(
             add_instance(image_position, image_size, allocation, instances);
         }
         atlas::Entry::Fragmented { fragments, size } => {
-            let scaling_x = image_size[0] / size.0 as f32;
-            let scaling_y = image_size[1] / size.1 as f32;
+            let scaling_x = image_size[0] / size.width as f32;
+            let scaling_y = image_size[1] / size.height as f32;
 
             for fragment in fragments {
                 let allocation = &fragment.allocation;
 
                 let [x, y] = image_position;
                 let (fragment_x, fragment_y) = fragment.position;
-                let (fragment_width, fragment_height) = allocation.size();
+                let Size {
+                    width: fragment_width,
+                    height: fragment_height,
+                } = allocation.size();
 
                 let position = [
                     x + fragment_x as f32 * scaling_x,
@@ -549,7 +553,7 @@ fn add_instance(
     instances: &mut Vec<Instance>,
 ) {
     let (x, y) = allocation.position();
-    let (width, height) = allocation.size();
+    let Size { width, height } = allocation.size();
     let layer = allocation.layer();
 
     let instance = Instance {

wgpu/src/image/atlas.rs

@@ -4,9 +4,6 @@ mod allocation;
 mod allocator;
 mod layer;
 
-use iced_graphics::image::TextureStore;
-use std::num::NonZeroU32;
-
 pub use allocation::Allocation;
 pub use entry::Entry;
 pub use layer::Layer;
@@ -15,6 +12,11 @@ use allocator::Allocator;
 
 pub const SIZE: u32 = 2048;
 
+use iced_graphics::image;
+use iced_graphics::Size;
+
+use std::num::NonZeroU32;
+
 #[derive(Debug)]
 pub struct Atlas {
     texture: wgpu::Texture,
@@ -112,7 +114,7 @@ impl Atlas {
             }
 
             return Some(Entry::Fragmented {
-                size: (width, height),
+                size: Size::new(width, height),
                 fragments,
             });
         }
@@ -192,7 +194,7 @@ impl Atlas {
         encoder: &mut wgpu::CommandEncoder,
     ) {
         let (x, y) = allocation.position();
-        let (width, height) = allocation.size();
+        let Size { width, height } = allocation.size();
         let layer = allocation.layer();
 
         let extent = wgpu::Extent3d {
@@ -297,7 +299,7 @@ impl Atlas {
     }
 }
 
-impl TextureStore for Atlas {
+impl image::Storage for Atlas {
     type Entry = Entry;
     type State<'a> = (&'a wgpu::Device, &'a mut wgpu::CommandEncoder);
 

wgpu/src/image/atlas/allocation.rs

@@ -1,5 +1,7 @@
 use crate::image::atlas::{self, allocator};
 
+use iced_graphics::Size;
+
 #[derive(Debug)]
 pub enum Allocation {
     Partial {
@@ -19,10 +21,10 @@ impl Allocation {
         }
     }
 
-    pub fn size(&self) -> (u32, u32) {
+    pub fn size(&self) -> Size<u32> {
         match self {
             Allocation::Partial { region, .. } => region.size(),
-            Allocation::Full { .. } => (atlas::SIZE, atlas::SIZE),
+            Allocation::Full { .. } => Size::new(atlas::SIZE, atlas::SIZE),
         }
     }
 

wgpu/src/image/atlas/allocator.rs

@@ -46,10 +46,10 @@ impl Region {
         (rectangle.min.x as u32, rectangle.min.y as u32)
     }
 
-    pub fn size(&self) -> (u32, u32) {
+    pub fn size(&self) -> iced_graphics::Size<u32> {
         let size = self.allocation.rectangle.size();
 
-        (size.width as u32, size.height as u32)
+        iced_graphics::Size::new(size.width as u32, size.height as u32)
     }
 }
 

wgpu/src/image/atlas/entry.rs

@@ -1,17 +1,19 @@
 use crate::image::atlas;
-use iced_graphics::image::TextureStoreEntry;
+
+use iced_graphics::image;
+use iced_graphics::Size;
 
 #[derive(Debug)]
 pub enum Entry {
     Contiguous(atlas::Allocation),
     Fragmented {
-        size: (u32, u32),
+        size: Size<u32>,
         fragments: Vec<Fragment>,
     },
 }
 
-impl TextureStoreEntry for Entry {
-    fn size(&self) -> (u32, u32) {
+impl image::storage::Entry for Entry {
+    fn size(&self) -> Size<u32> {
         match self {
             Entry::Contiguous(allocation) => allocation.size(),
             Entry::Fragmented { size, .. } => *size,