refactor: improve code readability by formatting and restructuring function parameters and logic

hcie-engine-api/src/stroke_brush.rs

@@ -117,17 +117,25 @@ impl Engine {
                 if mask.len() != full_size {
                     let mut full_mask = vec![layer.mask_default_color; full_size];
                     if let Some(mb) = layer.mask_bounds {
-                        let (m_top, m_left, m_bottom, m_right) =
+                        let (m_top, m_left, m_bottom, m_right) = (
-                            (mb[0].max(0) as u32, mb[1].max(0) as u32, mb[2].max(0) as u32, mb[3].max(0) as u32);
+                            mb[0].max(0) as u32,
+                            mb[1].max(0) as u32,
+                            mb[2].max(0) as u32,
+                            mb[3].max(0) as u32,
+                        );
                         let mw = (m_right - m_left) as usize;
                         let mh = (m_bottom - m_top) as usize;
                         if mw > 0 && mh > 0 && mask.len() == mw * mh {
                             for y in 0..mh {
                                 let gy = m_top as usize + y;
-                                if gy >= ch as usize { break; }
+                                if gy >= ch as usize {
+                                    break;
+                                }
                                 for x in 0..mw {
                                     let gx = m_left as usize + x;
-                                    if gx >= cw as usize { break; }
+                                    if gx >= cw as usize {
+                                        break;
+                                    }
                                     full_mask[gy * cw as usize + gx] = mask[y * mw + x];
                                 }
                             }
@@ -181,7 +189,9 @@ impl Engine {
             let cw = self.document.canvas_width as usize;
             let ch = self.document.canvas_height as usize;
             let mask_len = cw * ch;
-            if mask_len == 0 { return; }
+            if mask_len == 0 {
+                return;
+            }
 
             if let Some(layer) = self.document.get_layer_by_id_mut(layer_id) {
                 if layer.mask_pixels.is_none() {
@@ -294,7 +304,13 @@ impl Engine {
 
                 self.draw_target_pixels_or_mask(
                     layer_id,
-                    |pixels, lw, lh, mask_ref, active_stroke_mask, stroke_before_buf, sketch_history| {
+                    |pixels,
+                     lw,
+                     lh,
+                     mask_ref,
+                     active_stroke_mask,
+                     stroke_before_buf,
+                     sketch_history| {
                         let sketch_hist = if tip.style == BrushStyle::Sketch {
                             sketch_history
                         } else {
@@ -361,8 +377,15 @@ impl Engine {
             if self.editing_mask {
                 self.draw_target_pixels_or_mask(
                     layer_id,
-                    |pixels, lw, lh, mask_ref, active_stroke_mask, stroke_before_buf, _sketch_history| {
+                    |pixels,
-                        let mut temp_layer = hcie_protocol::Layer::from_rgba("temp", lw, lh, pixels.to_vec());
+                     lw,
+                     lh,
+                     mask_ref,
+                     active_stroke_mask,
+                     stroke_before_buf,
+                     _sketch_history| {
+                        let mut temp_layer =
+                            hcie_protocol::Layer::from_rgba("temp", lw, lh, pixels.to_vec());
                         draw_brush_stroke(
                             &mut temp_layer,
                             &[(x, y, pressure)],

hcie-iced-app/crates/hcie-iced-gui/src/app.rs

@@ -2901,11 +2901,14 @@ impl HcieIcedApp {
                 let paint_tool =
                     matches!(tool, Tool::Pen | Tool::Brush | Tool::Eraser | Tool::Spray);
                 if paint_tool && (self.modifiers.control() || self.modifiers.logo()) {
-                    let cx = canvas_x as u32;
-                    let cy = canvas_y as u32;
                     let width = self.documents[self.active_doc].engine.canvas_width();
-                    if cx < width && cy < self.documents[self.active_doc].engine.canvas_height() {
+                    let height = self.documents[self.active_doc].engine.canvas_height();
-                        let index = ((cy * width + cx) * 4) as usize;
+                    if canvas_x >= 0.0
+                        && canvas_y >= 0.0
+                        && (canvas_x as u32) < width
+                        && (canvas_y as u32) < height
+                    {
+                        let index = ((canvas_y as u32 * width + canvas_x as u32) * 4) as usize;
                         if index + 3 < self.documents[self.active_doc].composite_raw.len() {
                             let pixels = &self.documents[self.active_doc].composite_raw;
                             let color = [
@@ -3247,13 +3250,11 @@ impl HcieIcedApp {
                         let is_ctrl = self.modifiers.control() || self.modifiers.logo();
                         if is_ctrl {
                             // Pick color
-                            let cx = x as u32;
-                            let cy = y as u32;
                             let w = self.documents[self.active_doc].engine.canvas_width();
                             let h = self.documents[self.active_doc].engine.canvas_height();
-                            if cx < w && cy < h {
+                            if x >= 0.0 && y >= 0.0 && (x as u32) < w && (y as u32) < h {
                                 let pixels = &self.documents[self.active_doc].composite_raw;
-                                let idx = ((cy * w + cx) * 4) as usize;
+                                let idx = ((y as u32 * w + x as u32) * 4) as usize;
                                 if idx + 3 < pixels.len() {
                                     let color = [
                                         pixels[idx],
@@ -3719,7 +3720,9 @@ impl HcieIcedApp {
             }
 
             Message::LayerSetEditMask(editing) => {
-                self.documents[self.active_doc].engine.set_editing_mask(editing);
+                self.documents[self.active_doc]
+                    .engine
+                    .set_editing_mask(editing);
                 self.documents[self.active_doc].cached_layers =
                     self.documents[self.active_doc].engine.layer_infos();
             }
@@ -6711,10 +6714,8 @@ impl HcieIcedApp {
                     self.settings.tool_settings.vector_angle = angle.to_degrees();
 
                     // Track snap state for visual overlay feedback
-                    let is_rotate = matches!(
+                    let is_rotate =
-                        session.handle,
+                        matches!(session.handle, hcie_engine_api::VectorEditHandle::Rotate);
-                        hcie_engine_api::VectorEditHandle::Rotate
-                    );
                     let is_resize = matches!(
                         session.handle,
                         hcie_engine_api::VectorEditHandle::TopLeft
@@ -7784,7 +7785,8 @@ impl HcieIcedApp {
             }
             Message::PasteImage => {
                 // Check internal clipboard first
-                if let Some(transform) = self.documents[self.active_doc].internal_clipboard.clone() {
+                if let Some(transform) = self.documents[self.active_doc].internal_clipboard.clone()
+                {
                     // Enter transform mode with the clipboard content
                     let mut placed = transform;
                     placed.pos.x += 10.0;
@@ -8481,12 +8483,10 @@ impl HcieIcedApp {
                 return self.update(Message::OpenFileRfd);
             }
 
-            Message::FileOpened(Ok(path)) => {
+            Message::FileOpened(Ok(path)) => match self.open_path_in_new_tab(path, true) {
-                match self.open_path_in_new_tab(path, true) {
+                Ok(_) => return Task::perform(async {}, |_| Message::CompositeRefresh),
-                    Ok(_) => return Task::perform(async {}, |_| Message::CompositeRefresh),
+                Err(error) => log::error!("Failed to open file: {error}"),
-                    Err(error) => log::error!("Failed to open file: {error}"),
+            },
-                }
-            }
 
             Message::FileOpened(Err(e)) => {
                 log::error!("Failed to open file: {}", e);
@@ -9153,9 +9153,7 @@ impl HcieIcedApp {
                     | crate::theme::ThemePreset::ProDark
                     | crate::theme::ThemePreset::Amoled => crate::theme::ThemePreset::ProLight,
                     crate::theme::ThemePreset::PhotoshopLight
-                    | crate::theme::ThemePreset::ProLight => {
+                    | crate::theme::ThemePreset::ProLight => crate::theme::ThemePreset::Photopea,
-                        crate::theme::ThemePreset::Photopea
-                    }
                 };
                 self.theme_state.set_preset(new_preset);
                 self.settings.theme_preset = new_preset;
@@ -10308,10 +10306,8 @@ mod cycle_one_ux_tests {
             .duration_since(std::time::UNIX_EPOCH)
             .unwrap()
             .as_nanos();
-        let path = std::env::temp_dir().join(format!(
+        let path =
-            "hcie-open-tab-{}-{unique}.png",
+            std::env::temp_dir().join(format!("hcie-open-tab-{}-{unique}.png", std::process::id()));
-            std::process::id()
-        ));
         image::save_buffer(
             &path,
             &[255, 0, 0, 255, 0, 255, 0, 255],
@@ -10328,7 +10324,10 @@ mod cycle_one_ux_tests {
         assert_eq!(app.active_doc, 1);
         assert_eq!(app.documents[0].name, original_name);
         assert!(app.documents[0].source_path.is_none());
-        assert_eq!(app.documents[1].source_path.as_deref(), Some(path.as_path()));
+        assert_eq!(
+            app.documents[1].source_path.as_deref(),
+            Some(path.as_path())
+        );
         assert_eq!(app.documents[1].engine.canvas_width(), 2);
         assert_eq!(app.documents[1].engine.canvas_height(), 1);
 

hcie-iced-app/crates/hcie-iced-gui/src/canvas/shader_canvas.rs

@@ -985,8 +985,7 @@ fn should_publish_cursor_status(
     current: (u32, u32),
     elapsed: Option<std::time::Duration>,
 ) -> bool {
-    previous != Some(current)
+    previous != Some(current) && elapsed.map_or(true, |duration| duration >= CURSOR_STATUS_INTERVAL)
-        && elapsed.map_or(true, |duration| duration >= CURSOR_STATUS_INTERVAL)
 }
 
 /// Canvas shader program — implements `iced::widget::shader::Program`.

hcie-iced-app/crates/hcie-iced-gui/src/canvas/viewport.rs

@@ -110,23 +110,44 @@ impl Program<Message> for CanvasViewportProgram {
         let mut frame = Frame::new(bounds.size());
 
         // Draw checkerboard background (tiled to cover display area)
-        let checker_pattern = canvas::Pattern::new(&cfg.checker_handle).mode(canvas::PatternMode::Repeat);
+        let checker_pattern =
-        let checker_path = Path::rectangle(Point::new(origin_x, origin_y), Size::new(display_w, display_h));
+            canvas::Pattern::new(&cfg.checker_handle).mode(canvas::PatternMode::Repeat);
+        let checker_path = Path::rectangle(
+            Point::new(origin_x, origin_y),
+            Size::new(display_w, display_h),
+        );
         frame.fill(&checker_path, checker_pattern);
 
         // Draw composite texture
-        let composite_image = canvas::Image::new(&cfg.composite_handle)
+        let composite_image =
-            .destination_rectangle(Rectangle::new(Point::new(origin_x, origin_y), Size::new(display_w, display_h)));
+            canvas::Image::new(&cfg.composite_handle).destination_rectangle(Rectangle::new(
+                Point::new(origin_x, origin_y),
+                Size::new(display_w, display_h),
+            ));
         frame.draw_image(composite_image);
 
         // Draw canvas border
-        let border_path = Path::rectangle(Point::new(origin_x, origin_y), Size::new(display_w, display_h));
+        let border_path = Path::rectangle(
-        frame.stroke(&border_path, Stroke::default().with_color(Color::from_rgb(0.35, 0.35, 0.35)).with_width(1.0));
+            Point::new(origin_x, origin_y),
+            Size::new(display_w, display_h),
+        );
+        frame.stroke(
+            &border_path,
+            Stroke::default()
+                .with_color(Color::from_rgb(0.35, 0.35, 0.35))
+                .with_width(1.0),
+        );
 
         vec![frame.into_geometry()]
     }
 
-    fn update(&self, state: &mut (), event: iced::Event, bounds: Rectangle, cursor: Cursor) -> (iced::widget::canvas::Status, Option<Message>) {
+    fn update(
+        &self,
+        state: &mut (),
+        event: iced::Event,
+        bounds: Rectangle,
+        cursor: Cursor,
+    ) -> (iced::widget::canvas::Status, Option<Message>) {
         let mut program_state = self.state.lock().unwrap();
 
         match event {
@@ -140,17 +161,22 @@ impl Program<Message> for CanvasViewportProgram {
                     iced::mouse::Event::ButtonPressed(iced::mouse::Button::Left) => {
                         if let Some(pos) = program_state.last_cursor {
                             if bounds.contains(pos) {
-                                let (cx, cy) = viewport_to_canvas(pos, bounds, &program_state.config);
+                                let (cx, cy) =
+                                    viewport_to_canvas(pos, bounds, &program_state.config);
                                 if let Some((cx, cy)) = (cx, cy) {
-                                    return (iced::widget::canvas::Status::Captured, Some(Message::CanvasPointerPressed { x: cx, y: cy }));
+                                    return (
+                                        iced::widget::canvas::Status::Captured,
+                                        Some(Message::CanvasPointerPressed { x: cx, y: cy }),
+                                    );
                                 }
                             }
                         }
                         (iced::widget::canvas::Status::Captured, None)
                     }
-                    iced::mouse::Event::ButtonReleased(iced::mouse::Button::Left) => {
+                    iced::mouse::Event::ButtonReleased(iced::mouse::Button::Left) => (
-                        (iced::widget::canvas::Status::Captured, Some(Message::CanvasPointerReleased))
+                        iced::widget::canvas::Status::Captured,
-                    }
+                        Some(Message::CanvasPointerReleased),
+                    ),
                     iced::mouse::Event::Scrolled { delta } => {
                         if program_state.is_hovered {
                             let scroll_delta = match delta {
@@ -164,7 +190,12 @@ impl Program<Message> for CanvasViewportProgram {
                                 let new_zoom = (old_zoom * factor).clamp(0.1, 10.0);
 
                                 if let Some(cursor_pos) = program_state.last_cursor {
-                                    let (canvas_x, canvas_y) = viewport_to_canvas(cursor_pos, bounds, &program_state.config).unwrap_or((0.0, 0.0));
+                                    let (canvas_x, canvas_y) = viewport_to_canvas(
+                                        cursor_pos,
+                                        bounds,
+                                        &program_state.config,
+                                    )
+                                    .unwrap_or((0.0, 0.0));
 
                                     // Calculate new pan_offset to keep cursor over same canvas point
                                     let display_w = program_state.config.engine_w as f32 * new_zoom;
@@ -174,11 +205,18 @@ impl Program<Message> for CanvasViewportProgram {
                                     let new_default_origin_x = (bounds.width - display_w) / 2.0;
                                     let new_default_origin_y = (bounds.height - display_h) / 2.0;
 
-                                    program_state.config.pan_offset.x = new_origin_x - new_default_origin_x;
+                                    program_state.config.pan_offset.x =
-                                    program_state.config.pan_offset.y = new_origin_y - new_default_origin_y;
+                                        new_origin_x - new_default_origin_x;
+                                    program_state.config.pan_offset.y =
+                                        new_origin_y - new_default_origin_y;
                                 }
                                 program_state.config.zoom = new_zoom;
-                                return (iced::widget::canvas::Status::Captured, Some(Message::CanvasZoom { delta: scroll_delta }));
+                                return (
+                                    iced::widget::canvas::Status::Captured,
+                                    Some(Message::CanvasZoom {
+                                        delta: scroll_delta,
+                                    }),
+                                );
                             }
                         }
                         (iced::widget::canvas::Status::Ignored, None)
@@ -190,7 +228,12 @@ impl Program<Message> for CanvasViewportProgram {
         }
     }
 
-    fn mouse_interaction(&self, _state: &(), bounds: Rectangle, cursor: Cursor) -> iced::mouse::Interaction {
+    fn mouse_interaction(
+        &self,
+        _state: &(),
+        bounds: Rectangle,
+        cursor: Cursor,
+    ) -> iced::mouse::Interaction {
         if cursor.is_over(bounds) {
             iced::mouse::Interaction::Crosshair
         } else {
@@ -203,7 +246,11 @@ impl Program<Message> for CanvasViewportProgram {
 ///
 /// Returns signed canvas coordinates even when the cursor is outside the canvas
 /// image so brush strokes can start or continue beyond the visible edges.
-fn viewport_to_canvas(viewport_pos: Point, bounds: Rectangle, config: &CanvasViewportConfig) -> Option<(f32, f32)> {
+fn viewport_to_canvas(
+    viewport_pos: Point,
+    bounds: Rectangle,
+    config: &CanvasViewportConfig,
+) -> Option<(f32, f32)> {
     let display_w = config.engine_w as f32 * config.zoom;
     let display_h = config.engine_h as f32 * config.zoom;