Add lines and boxes to printer.

Dialog now draws its box.

src/printer.rs

@@ -20,6 +20,32 @@ impl Printer {
         ncurses::mvwprintw(self.win, (p.y + self.offset.y) as i32, (p.x + self.offset.x) as i32, text);
     }
 
+    /// Prints a vertical line using the given character.
+    pub fn print_vline<T: ToVec2>(&self, c: char, start: T, len: u32) {
+        let p = start.to_vec2();
+        ncurses::mvwvline(self.win, (p.y + self.offset.y) as i32, (p.x + self.offset.x) as i32, c as u64, len as i32);
+    }
+
+    /// Prints a horizontal line using the given character.
+    pub fn print_hline<T: ToVec2>(&self, c: char, start: T, len: u32) {
+        let p = start.to_vec2();
+        ncurses::mvwhline(self.win, (p.y + self.offset.y) as i32, (p.x + self.offset.x) as i32, c as u64, len as i32);
+    }
+
+    pub fn print_box<T: ToVec2>(&self, start: T, size: T, corners: char, horizontal: char, vertical: char) {
+        let start_v = start.to_vec2();
+        let size_v = size.to_vec2() - (1,1);
+
+        self.print(start_v, &corners.to_string());
+        self.print(start_v + size_v.keep_x(), &corners.to_string());
+        self.print(start_v + size_v.keep_y(), &corners.to_string());
+        self.print(start_v + size_v, &corners.to_string());
+        self.print_hline(horizontal, start_v + (1,0), size_v.x - 1);
+        self.print_hline(horizontal, start_v + (1,0) + size_v.keep_y(), size_v.x - 1);
+        self.print_vline(vertical, start_v + (0,1), size_v.y - 1);
+        self.print_vline(vertical, start_v + (0,1) + size_v.keep_x(), size_v.y - 1);
+    }
+
     /// Returns a printer on a subset of this one's area.
     pub fn sub_printer<S: ToVec2>(&self, offset: S, size: S) -> Printer {
         let offset_v = offset.to_vec2();

src/vec.rs

@@ -56,6 +56,12 @@ impl ToVec2 for Vec2 {
     }
 }
 
+impl ToVec2 for (i32,i32) {
+    fn to_vec2(self) -> Vec2 {
+        (self.0 as u32, self.1 as u32).to_vec2()
+    }
+}
+
 impl ToVec2 for (u32,u32) {
     fn to_vec2(self) -> Vec2 {
         Vec2::new(self.0, self.1)

src/view/dialog.rs

@@ -79,10 +79,8 @@ impl View for Dialog {
 
         self.content.draw(&printer.sub_printer(self.borders.top_left() + self.padding.top_left(), inner_size), focused && self.focus == Focus::Content);
 
-        printer.print(Vec2::new(0,0), "+");
+        printer.print_box(Vec2::new(0,0), printer.size, '+', '-', '|');
-        printer.print(Vec2::new(printer.size.x-1, 0), "+");
+
-        printer.print(Vec2::new(0, printer.size.y-1), "+");
-        printer.print(Vec2::new(printer.size.x-1, printer.size.y-1), "+");
     }
 
     fn get_min_size(&self, req: SizeRequest) -> Vec2 {
@@ -135,6 +133,14 @@ impl View for Dialog {
             },
             Focus::Button(i) => match self.buttons[i].on_key_event(ch) {
                 EventResult::Ignored => match ch {
+                    ncurses::KEY_UP => {
+                        if self.content.take_focus() {
+                            self.focus = Focus::Content;
+                            EventResult::consume()
+                        } else {
+                            EventResult::Ignored
+                        }
+                    },
                     ncurses::KEY_RIGHT if i+1 < self.buttons.len() => {
                         self.focus = Focus::Button(i+1);
                         EventResult::consume()