add fill option to rectangle canvas struct

examples/canvas.rs

@@ -37,6 +37,7 @@ impl App {
                 width: 10.0,
                 height: 10.0,
                 color: Color::Yellow,
+                fill: false
             },
             playground: Rect::new(10, 10, 100, 100),
             vx: 1.0,

examples/demo/ui.rs

@@ -345,6 +345,7 @@ where
                 width: 10.0,
                 height: 10.0,
                 color: Color::Yellow,
+                fill: false
             });
             for (i, s1) in app.servers.iter().enumerate() {
                 for s2 in &app.servers[i + 1..] {

src/widgets/canvas/rectangle.rs

@@ -11,40 +11,63 @@ pub struct Rectangle {
     pub width: f64,
     pub height: f64,
     pub color: Color,
+    pub fill: bool
 }
 
 impl Shape for Rectangle {
     fn draw(&self, painter: &mut Painter) {
-        let lines: [Line; 4] = [
-            Line {
-                x1: self.x,
-                y1: self.y,
-                x2: self.x,
-                y2: self.y + self.height,
-                color: self.color,
-            },
-            Line {
-                x1: self.x,
-                y1: self.y + self.height,
-                x2: self.x + self.width,
-                y2: self.y + self.height,
-                color: self.color,
-            },
-            Line {
-                x1: self.x + self.width,
-                y1: self.y,
-                x2: self.x + self.width,
-                y2: self.y + self.height,
-                color: self.color,
-            },
-            Line {
-                x1: self.x,
-                y1: self.y,
-                x2: self.x + self.width,
-                y2: self.y,
-                color: self.color,
-            },
-        ];
+
+        let mut lines: Vec<Line> = Vec::new();
+
+        if !self.fill {
+            lines = [
+                Line {
+                    x1: self.x,
+                    y1: self.y,
+                    x2: self.x,
+                    y2: self.y + self.height,
+                    color: self.color,
+                },
+                Line {
+                    x1: self.x,
+                    y1: self.y + self.height,
+                    x2: self.x + self.width,
+                    y2: self.y + self.height,
+                    color: self.color,
+                },
+                Line {
+                    x1: self.x + self.width,
+                    y1: self.y,
+                    x2: self.x + self.width,
+                    y2: self.y + self.height,
+                    color: self.color,
+                },
+                Line {
+                    x1: self.x,
+                    y1: self.y,
+                    x2: self.x + self.width,
+                    y2: self.y,
+                    color: self.color,
+                },
+            ].to_vec();
+        }else{
+
+            let mut n: f64 = 0.0;
+
+            while n < self.height {
+                lines.push(Line{
+                    x1: self.x,
+                    y1: self.y + n,
+                    x2: self.x + self.width,
+                    y2: self.y + n,
+                    color: self.color
+                });
+
+                n += 0.5
+            }
+
+        }
+
         for line in &lines {
             line.draw(painter);
         }