feat: 实现 ShapeStyle 配置

src/mscanvas.rs

@@ -651,6 +651,26 @@ impl MSCanvas {
         }
     }
 
+    pub fn fill_rect1(&mut self, p1: Point, p2: Point) {
+        let mut x = p1.x;
+        let mut y = p1.y;
+        let mut width = (p2.x - p1.x);
+        let mut height = (p2.y - p1.y);
+        if width < 0.0 && height < 0.0 {
+            x = p2.x;
+            y = p2.y;
+            width = (p1.x - p2.x);
+            height = (p1.y - p2.y);
+        } else if width < 0.0 {
+            x += width;
+            width = -width;
+        } else if height < 0.0 {
+            y += height;
+            height = -height;
+        }
+        self.fill_rect(x as i32, y as i32, width as i32, height as i32);
+    }
+
     /// 填充一个圆角矩形
     /// - x, y: 左上角坐标
     /// - width, height: 尺寸（必须 > 0）