feat: 优化 overlay_pixels

.gitignore

@@ -16,3 +16,5 @@ target/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+mspaint.png

Cargo.lock

@@ -197,6 +197,17 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "async-fs"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8034a681df4aed8b8edbd7fbe472401ecf009251c8b40556b304567052e294c5"
+dependencies = [
+ "async-lock",
+ "blocking",
+ "futures-lite",
+]
+
 [[package]]
 name = "async-io"
 version = "2.6.0"
@@ -226,6 +237,17 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "async-net"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b948000fad4873c1c9339d60f2623323a0cfd3816e5181033c6a5cb68b2accf7"
+dependencies = [
+ "async-io",
+ "blocking",
+ "futures-lite",
+]
+
 [[package]]
 name = "async-process"
 version = "2.5.0"
@@ -549,6 +571,17 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
 
+[[package]]
+name = "chacha20"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f8d983286843e49675a4b7a2d174efe136dc93a18d69130dd18198a6c167601"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core 0.10.0",
+]
+
 [[package]]
 name = "clipboard-win"
 version = "5.4.1"
@@ -727,6 +760,15 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crc32fast"
 version = "1.5.0"
@@ -1019,6 +1061,12 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "float_next_after"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8bf7cc16383c4b8d58b9905a8509f02926ce3058053c056376248d958c9df1e8"
+
 [[package]]
 name = "foldhash"
 version = "0.1.5"
@@ -1222,6 +1270,7 @@ dependencies = [
  "cfg-if",
  "libc",
  "r-efi",
+ "rand_core 0.10.0",
  "wasip2",
  "wasip3",
 ]
@@ -1458,6 +1507,7 @@ dependencies = [
  "iced_core",
  "log",
  "rustc-hash 2.1.1",
+ "smol",
  "wasm-bindgen-futures",
  "wasmtimer",
 ]
@@ -1477,6 +1527,7 @@ dependencies = [
  "image",
  "kamadak-exif",
  "log",
+ "lyon_path",
  "raw-window-handle",
  "rustc-hash 2.1.1",
  "thiserror 2.0.18",
@@ -1551,6 +1602,7 @@ dependencies = [
  "iced_debug",
  "iced_graphics",
  "log",
+ "lyon",
  "rustc-hash 2.1.1",
  "thiserror 2.0.18",
  "wgpu",
@@ -1869,6 +1921,58 @@ version = "0.16.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1dc47f592c06f33f8e3aea9591776ec7c9f9e4124778ff8a3c3b87159f7e593"
 
+[[package]]
+name = "lyon"
+version = "1.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbcb7d54d54c8937364c9d41902d066656817dce1e03a44e5533afebd1ef4352"
+dependencies = [
+ "lyon_algorithms",
+ "lyon_tessellation",
+]
+
+[[package]]
+name = "lyon_algorithms"
+version = "1.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4c0829e28c4f336396f250d850c3987e16ce6db057ffe047ce0dd54aab6b647"
+dependencies = [
+ "lyon_path",
+ "num-traits",
+]
+
+[[package]]
+name = "lyon_geom"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e260b6de923e6e47adfedf6243013a7a874684165a6a277594ee3906021b2343"
+dependencies = [
+ "arrayvec",
+ "euclid",
+ "num-traits",
+]
+
+[[package]]
+name = "lyon_path"
+version = "1.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1aeca86bcfd632a15984ba029b539ffb811e0a70bf55e814ef8b0f54f506fdeb"
+dependencies = [
+ "lyon_geom",
+ "num-traits",
+]
+
+[[package]]
+name = "lyon_tessellation"
+version = "1.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3f586142e1280335b1bc89539f7c97dd80f08fc43e9ab1b74ef0a42b04aa353"
+dependencies = [
+ "float_next_after",
+ "lyon_path",
+ "num-traits",
+]
+
 [[package]]
 name = "malloc_buf"
 version = "0.0.6"
@@ -1954,6 +2058,7 @@ dependencies = [
  "iced",
  "iced_core",
  "image",
+ "rand 0.10.0",
 ]
 
 [[package]]
@@ -2795,7 +2900,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
 dependencies = [
  "rand_chacha",
- "rand_core",
+ "rand_core 0.9.5",
+]
+
+[[package]]
+name = "rand"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc266eb313df6c5c09c1c7b1fbe2510961e5bcd3add930c1e31f7ed9da0feff8"
+dependencies = [
+ "chacha20",
+ "getrandom 0.4.1",
+ "rand_core 0.10.0",
 ]
 
 [[package]]
@@ -2805,7 +2921,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.9.5",
 ]
 
 [[package]]
@@ -2817,6 +2933,12 @@ dependencies = [
  "getrandom 0.3.4",
 ]
 
+[[package]]
+name = "rand_core"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c8d0fd677905edcbeedbf2edb6494d676f0e98d54d5cf9bda0b061cb8fb8aba"
+
 [[package]]
 name = "range-alloc"
 version = "0.1.4"
@@ -2856,7 +2978,7 @@ dependencies = [
  "num-traits",
  "paste",
  "profiling",
- "rand",
+ "rand 0.9.2",
  "rand_chacha",
  "simd_helpers",
  "thiserror 2.0.18",
@@ -3230,6 +3352,23 @@ dependencies = [
  "wayland-backend",
 ]
 
+[[package]]
+name = "smol"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a33bd3e260892199c3ccfc487c88b2da2265080acb316cd920da72fdfd7c599f"
+dependencies = [
+ "async-channel",
+ "async-executor",
+ "async-fs",
+ "async-io",
+ "async-lock",
+ "async-net",
+ "async-process",
+ "blocking",
+ "futures-lite",
+]
+
 [[package]]
 name = "smol_str"
 version = "0.2.2"

Cargo.toml

@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-iced = {version =  "0.14.0",  features = ["advanced", "image"]}
+iced = {version =  "0.14.0",  features = ["advanced", "image", "smol", "canvas"]}
 iced_core = "0.14.0"
 image = "0.25.9"
+rand = "0.10.0"

src/color_box.rs

@@ -0,0 +1,246 @@
+use iced::color;
+use iced::mouse;
+use iced::widget::canvas::{self, Cache, Geometry};
+use iced::{Color, Point, Rectangle, Renderer, Size, Theme};
+
+use crate::mscanvas::MSColor;
+
+pub struct CurrentColorBox {
+    cache: Cache,
+    foreground_color: MSColor,
+    background_color: MSColor,
+}
+
+impl CurrentColorBox {
+    pub fn new(foreground_color: MSColor, background_color: MSColor) -> Self {
+        Self {
+            cache: Cache::default(),
+            foreground_color,
+            background_color,
+        }
+    }
+}
+
+impl<Message> canvas::Program<Message> for CurrentColorBox {
+    type State = ();
+
+    fn draw(
+        &self,
+        _state: &Self::State,
+        renderer: &Renderer,
+        _theme: &Theme,
+        bounds: Rectangle,
+        _cursor: mouse::Cursor,
+    ) -> Vec<Geometry> {
+        let geometry = self.cache.draw(renderer, bounds.size(), |frame| {
+            // let palette = theme.palette();
+
+            let gray1 = color!(0x808080);
+            let gray2 = color!(0xc0c0c0);
+            let Size { width, height } = frame.size();
+
+            frame.fill_rectangle(Point::ORIGIN, Size::new(width - 1.0, 1.0), gray1);
+            frame.fill_rectangle(Point::ORIGIN, Size::new(1.0, height - 1.0), gray1);
+            frame.fill_rectangle(
+                Point::new(width - 2.0, 1.0),
+                Size::new(1.0, height - 2.0),
+                gray2,
+            );
+            frame.fill_rectangle(
+                Point::new(1.0, height - 2.0),
+                Size::new(width - 2.0, 1.0),
+                gray2,
+            );
+
+            frame.fill_rectangle(
+                Point::new(1.0, 1.0),
+                Size::new(width - 3.0, 1.0),
+                Color::BLACK,
+            );
+            frame.fill_rectangle(
+                Point::new(1.0, 1.0),
+                Size::new(1.0, height - 3.0),
+                Color::BLACK,
+            );
+
+            frame.fill_rectangle(
+                Point::new(width - 1.0, 0.0),
+                Size::new(1.0, height),
+                Color::WHITE,
+            );
+            frame.fill_rectangle(
+                Point::new(0.0, height - 1.0),
+                Size::new(width, 1.0),
+                Color::WHITE,
+            );
+
+            let tile_colors = [Color::WHITE, gray2];
+            let mut tile_idx = 0;
+            for y in 2..(height - 2.0) as i32 {
+                for x in 2..(width - 2.0) as i32 {
+                    frame.fill_rectangle(
+                        Point::new(x as f32, y as f32),
+                        Size::new(1.0, 1.0),
+                        tile_colors[tile_idx],
+                    );
+                    tile_idx += 1;
+                    if tile_idx >= tile_colors.len() {
+                        tile_idx = 0;
+                    }
+                }
+            }
+
+            let box_size: f32 = 20.0;
+            let fore_x: f32 = 6.0;
+            let fore_y: f32 = 8.0;
+            let back_x: f32 = fore_x + box_size / 2.0 + 2.0;
+            let back_y: f32 = fore_y + box_size / 2.0 + 2.0;
+
+            // 背景颜色展示框
+            frame.fill_rectangle(
+                Point::new(back_x, back_y),
+                Size::new(box_size, 1.0),
+                Color::WHITE,
+            );
+            frame.fill_rectangle(
+                Point::new(back_x, back_y),
+                Size::new(1.0, box_size),
+                Color::WHITE,
+            );
+            frame.fill_rectangle(
+                Point::new(back_x + box_size - 1.0, back_y + 1.0),
+                Size::new(1.0, box_size - 1.0),
+                gray1,
+            );
+            frame.fill_rectangle(
+                Point::new(back_x + 1.0, back_y + box_size - 1.0),
+                Size::new(box_size - 1.0, 1.0),
+                gray1,
+            );
+
+            frame.fill_rectangle(
+                Point::new(back_x + 1.0, back_y + 1.0),
+                Size::new(box_size - 2.0, box_size - 2.0),
+                gray2,
+            );
+            frame.fill_rectangle(
+                Point::new(back_x + 2.0, back_y + 2.0),
+                Size::new(box_size - 4.0, box_size - 4.0),
+                self.background_color.into_color(),
+            );
+
+            // 前景颜色展示框
+            frame.fill_rectangle(
+                Point::new(fore_x, fore_y),
+                Size::new(box_size, 1.0),
+                Color::WHITE,
+            );
+            frame.fill_rectangle(
+                Point::new(fore_x, fore_y),
+                Size::new(1.0, box_size),
+                Color::WHITE,
+            );
+            frame.fill_rectangle(
+                Point::new(fore_x + box_size - 1.0, fore_y + 1.0),
+                Size::new(1.0, box_size - 1.0),
+                gray1,
+            );
+            frame.fill_rectangle(
+                Point::new(fore_x + 1.0, fore_y + box_size - 1.0),
+                Size::new(box_size - 1.0, 1.0),
+                gray1,
+            );
+
+            frame.fill_rectangle(
+                Point::new(fore_x + 1.0, fore_y + 1.0),
+                Size::new(box_size - 2.0, box_size - 2.0),
+                gray2,
+            );
+            frame.fill_rectangle(
+                Point::new(fore_x + 2.0, fore_y + 2.0),
+                Size::new(box_size - 4.0, box_size - 4.0),
+                self.foreground_color.into_color(),
+            );
+        });
+
+        vec![geometry]
+    }
+}
+
+pub struct ColorSelectionBox {
+    cache: Cache,
+    color: MSColor,
+}
+
+impl ColorSelectionBox {
+    pub fn new(color: MSColor) -> ColorSelectionBox {
+        Self {
+            cache: Cache::default(),
+            color,
+        }
+    }
+}
+
+impl<Message> canvas::Program<Message> for ColorSelectionBox {
+    type State = ();
+
+    fn draw(
+        &self,
+        _state: &Self::State,
+        renderer: &Renderer,
+        _theme: &Theme,
+        bounds: Rectangle,
+        _cursor: mouse::Cursor,
+    ) -> Vec<Geometry> {
+        let geometry = self.cache.draw(renderer, bounds.size(), |frame| {
+            // let palette = theme.palette();
+
+            let gray1 = color!(0x808080);
+            let gray2 = color!(0xc0c0c0);
+            let Size { width, height } = frame.size();
+
+            frame.fill_rectangle(Point::ORIGIN, Size::new(width - 1.0, 1.0), gray1);
+            frame.fill_rectangle(Point::ORIGIN, Size::new(1.0, height - 1.0), gray1);
+            frame.fill_rectangle(
+                Point::new(width - 2.0, 1.0),
+                Size::new(1.0, height - 2.0),
+                gray2,
+            );
+            frame.fill_rectangle(
+                Point::new(1.0, height - 2.0),
+                Size::new(width - 2.0, 1.0),
+                gray2,
+            );
+
+            frame.fill_rectangle(
+                Point::new(1.0, 1.0),
+                Size::new(width - 3.0, 1.0),
+                Color::BLACK,
+            );
+            frame.fill_rectangle(
+                Point::new(1.0, 1.0),
+                Size::new(1.0, height - 3.0),
+                Color::BLACK,
+            );
+
+            frame.fill_rectangle(
+                Point::new(width - 1.0, 0.0),
+                Size::new(1.0, height),
+                Color::WHITE,
+            );
+            frame.fill_rectangle(
+                Point::new(0.0, height - 1.0),
+                Size::new(width, 1.0),
+                Color::WHITE,
+            );
+
+            frame.fill_rectangle(
+                Point::new(2.0, 2.0),
+                Size::new(width - 4.0, height - 4.0),
+                self.color.into_color(),
+            );
+        });
+
+        vec![geometry]
+    }
+}

src/main.rs

@@ -1,3 +1,4 @@
+mod color_box;
 mod image_button;
 mod mouse_area;
 mod mscanvas;