Add clamping of the right side of the tape (#40)

* Add clamping of the right side of the tape

* Bump version

Author: margual56

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "turing-machine"
-version = "1.3.3"
+version = "1.3.4"
 edition = "2021"
 authors = ["Marcos Gutiérrez Alonso <[email protected]>"]
 description = "Turing Machine Simulator"

Cargo.toml

@@ -1,2 +1,2 @@
 [build]
-filehash = false
+filehash = false

Trunk.toml

@@ -239,7 +239,7 @@ impl Widget for &mut TuringWidget {
 
             let pos = center + Vec2::new(self.offset * size.x, 0.0);
 
-            for i in 0..(self.tm.tape.len()) {
+            for i in 0..(self.tm.tape.len() + 5) {
                 let position = Pos2::new(
                     pos.x + (i as f32 - self.tm.tape_position as f32) * size.x,
                     pos.y,
@@ -248,7 +248,10 @@ impl Widget for &mut TuringWidget {
                 if ui.is_rect_visible(rect) {
                     if rect.min.x < self.left {
                         rect.set_left(self.left);
+                    } else if rect.max.x > self.left + ui.ctx().screen_rect().width() - 200.0 {
+                        rect.set_right(self.left + ui.ctx().screen_rect().width() - 200.0);
                     }
+
                     ui.painter()
                         .rect_filled(rect, rounding, Color32::LIGHT_BLUE);
                     ui.painter().rect_stroke(rect, rounding, stroke);
@@ -257,11 +260,17 @@ impl Widget for &mut TuringWidget {
                         ui.painter().text(
                             position,
                             Align2::CENTER_CENTER,
-                            if self.tm.tape[i] { "1" } else { "0" },
+                            if self.tm.get(i).unwrap_or(false) {
+                                "1"
+                            } else {
+                                "0"
+                            },
                             self.font_id.clone(),
                             Color32::BLACK,
                         );
                     }
+                } else {
+                    continue;
                 }
             }