Merge pull request #5920 from penpot/alotor-test-apply-modifiers

✨ Modify shapes geometry instead of transformation matrix

frontend/src/app/render_wasm/api.cljs

@@ -221,8 +221,7 @@
                              (aget buffer 0)
                              (aget buffer 1)
                              (aget buffer 2)
-                             (aget buffer 3)
-                             image-size)
+                             (aget buffer 3))
                      true))))))
 
 (defn set-shape-fills

render-wasm/src/main.rs

@@ -332,21 +332,19 @@ pub extern "C" fn store_font(family_name_size: u32, font_size: u32) {
 }
 
 #[no_mangle]
-pub extern "C" fn store_image(a: u32, b: u32, c: u32, d: u32, size: u32) {
+pub extern "C" fn store_image(a: u32, b: u32, c: u32, d: u32) {
     let state = unsafe { STATE.as_mut() }.expect("Got an invalid state pointer");
     let id = uuid_from_u32_quartet(a, b, c, d);
+    let image_bytes = mem::bytes();
 
-    unsafe {
-        let image_bytes =
-            Vec::<u8>::from_raw_parts(mem::buffer_ptr(), size as usize, size as usize);
-        match state.render_state().add_image(id, &image_bytes) {
-            Err(msg) => {
-                eprintln!("{}", msg);
-            }
-            _ => {}
+    match state.render_state().add_image(id, &image_bytes) {
+        Err(msg) => {
+            eprintln!("{}", msg);
         }
-        mem::free_bytes();
+        _ => {}
     }
+
+    mem::free_bytes();
 }
 
 #[no_mangle]

render-wasm/src/render.rs

@@ -297,24 +297,28 @@ impl RenderState {
 
             self.drawing_surface
                 .canvas()
-                .concat(&transform.invert().unwrap());
+                .concat(&transform.invert().unwrap_or(Matrix::default()));
+        }
+
+        // Clone so we don't change the value in the global state
+        let mut shape = shape.clone();
+
+        if let Some(modifiers) = modifiers {
+            shape.apply_transform(&modifiers);
         }
 
         let center = shape.center();
 
-        // Transform the shape in the center
-        let mut matrix = shape.transform.clone();
+        let mut matrix = shape.transform;
         matrix.post_translate(center);
         matrix.pre_translate(-center);
 
-        if let Some(modifiers) = modifiers {
-            matrix.post_concat(&modifiers);
-        }
-
-        self.drawing_surface.canvas().concat(&matrix);
-
         match &shape.kind {
             Kind::SVGRaw(sr) => {
+                if let Some(modifiers) = modifiers {
+                    self.drawing_surface.canvas().concat(&modifiers);
+                }
+                self.drawing_surface.canvas().concat(&matrix);
                 if let Some(svg) = shape.svg.as_ref() {
                     svg.render(self.drawing_surface.canvas())
                 } else {
@@ -332,12 +336,14 @@ impl RenderState {
                 }
             }
             _ => {
+                self.drawing_surface.canvas().concat(&matrix);
+
                 for fill in shape.fills().rev() {
-                    fills::render(self, shape, fill);
+                    fills::render(self, &shape, fill);
                 }
 
                 for stroke in shape.strokes().rev() {
-                    strokes::render(self, shape, stroke);
+                    strokes::render(self, &shape, stroke);
                 }
 
                 for shadow in shape.inner_shadows().rev().filter(|s| !s.hidden()) {

render-wasm/src/shapes.rs

@@ -348,24 +348,29 @@ impl Shape {
     }
 
     pub fn set_corners(&mut self, raw_corners: (f32, f32, f32, f32)) {
-        let (r1, r2, r3, r4) = raw_corners;
-        let are_straight_corners = r1.abs() <= f32::EPSILON
-            && r2.abs() <= f32::EPSILON
-            && r3.abs() <= f32::EPSILON
-            && r4.abs() <= f32::EPSILON;
+        match self.kind {
+            Kind::Rect(_, _) => {
+                let (r1, r2, r3, r4) = raw_corners;
+                let are_straight_corners = r1.abs() <= f32::EPSILON
+                    && r2.abs() <= f32::EPSILON
+                    && r3.abs() <= f32::EPSILON
+                    && r4.abs() <= f32::EPSILON;
 
-        let corners = if are_straight_corners {
-            None
-        } else {
-            Some([
-                (r1, r1).into(),
-                (r2, r2).into(),
-                (r3, r3).into(),
-                (r4, r4).into(),
-            ])
-        };
+                let corners = if are_straight_corners {
+                    None
+                } else {
+                    Some([
+                        (r1, r1).into(),
+                        (r2, r2).into(),
+                        (r3, r3).into(),
+                        (r4, r4).into(),
+                    ])
+                };
 
-        self.kind = Kind::Rect(self.selrect, corners);
+                self.kind = Kind::Rect(self.selrect, corners);
+            }
+            _ => {}
+        }
     }
 
     pub fn set_svg(&mut self, svg: skia::svg::Dom) {
@@ -494,6 +499,52 @@ impl Shape {
             _ => None,
         }
     }
+
+    fn transform_selrect(&mut self, transform: &Matrix) {
+        let mut center = self.selrect.center();
+        center = transform.map_point(center);
+
+        let bounds = self.bounds().transform(&transform);
+        self.transform = bounds.transform_matrix().unwrap_or(Matrix::default());
+
+        let width = bounds.width();
+        let height = bounds.height();
+
+        self.selrect = Rect::from_xywh(
+            center.x - width / 2.0,
+            center.y - height / 2.0,
+            width,
+            height,
+        );
+    }
+
+    pub fn apply_transform(&mut self, transform: &Matrix) {
+        match &self.kind {
+            Kind::Rect(_, c) => {
+                let c = c.clone();
+                self.transform_selrect(&transform);
+                self.kind = Kind::Rect(self.selrect, c);
+            }
+            Kind::Circle(_) => {
+                self.transform_selrect(&transform);
+                self.kind = Kind::Circle(self.selrect);
+            }
+            Kind::Path(path) => {
+                let mut path = path.clone();
+                self.transform_selrect(&transform);
+                path.transform(&transform);
+                self.kind = Kind::Path(path);
+            }
+            Kind::Bool(bool_type, path) => {
+                let bool_type = *bool_type;
+                let mut path = path.clone();
+                self.transform_selrect(&transform);
+                path.transform(&transform);
+                self.kind = Kind::Bool(bool_type, path);
+            }
+            _ => {}
+        }
+    }
 }
 
 #[cfg(test)]
@@ -512,4 +563,21 @@ mod tests {
         shape.add_fill(Fill::Solid(Color::TRANSPARENT));
         assert_eq!(shape.fills.get(0), Some(&Fill::Solid(Color::TRANSPARENT)))
     }
+
+    #[test]
+    fn test_apply_transform() {
+        let mut shape = Shape::new(Uuid::new_v4());
+        shape.set_shape_type(Type::Rect);
+        shape.set_selrect(0.0, 10.0, 10.0, 0.0);
+        shape.apply_transform(Matrix::scale((2.0, 2.0)));
+
+        match shape.kind {
+            Kind::Rect(r, _) => {
+                //println!(">>>{r:?}");
+                assert_eq!(r.width(), 20.0);
+                assert_eq!(r.height(), 20.0);
+            }
+            _ => assert!(false),
+        }
+    }
 }

render-wasm/src/shapes/paths.rs

@@ -1,4 +1,4 @@
-use skia_safe as skia;
+use skia_safe::{self as skia, Matrix};
 use std::array::TryFromSliceError;
 
 type Point = (f32, f32);
@@ -144,4 +144,8 @@ impl Path {
     pub fn is_open(&self) -> bool {
         self.open
     }
+
+    pub fn transform(&mut self, mtx: &Matrix) {
+        self.skia_path.transform(mtx);
+    }
 }