Add panel view

examples/progress.rs

@@ -17,12 +17,11 @@ fn main() {
 
             let n_max = 1000;
 
-            s.find_id::<Dialog>("dialog")
-                .unwrap()
-                .set_content(ProgressBar::new()
+            s.pop_layer();
+            s.add_layer(Panel::new(FullView::full_width(ProgressBar::new()
                     .range(0, n_max)
                     .with_value(value.clone())
-                    .with_callback(cb.clone()));
+                    .with_callback(cb.clone()))));
 
             // Spawn a thread to process things in the background.
             thread::spawn(move || {
@@ -44,7 +43,7 @@ fn main() {
         .padding((0, 0, 1, 1))
         .with_id("dialog"));
 
-    siv.set_fps(10);
+    siv.set_fps(30);
 
     siv.run();
 }

src/prelude.rs

@@ -9,7 +9,7 @@
 pub use {Cursive, Printer, With};
 pub use event::{Event, Key};
 pub use view::{BoxView, Button, Checkbox, Dialog, EditView, FullView, IdView,
-               Identifiable, KeyEventView, LinearLayout, ListView,
+               Identifiable, KeyEventView, LinearLayout, ListView, Panel,
                ProgressBar, SelectView, Selector, TextView, View};
 pub use vec::Vec2;
 pub use menu::MenuTree;

src/view/mod.rs

@@ -58,6 +58,7 @@ mod linear_layout;
 mod list_view;
 mod menubar;
 mod menu_popup;
+mod panel;
 mod progress_bar;
 mod shadow_view;
 mod select_view;
@@ -92,6 +93,7 @@ pub use self::list_view::ListView;
 pub use self::menubar::Menubar;
 pub use self::menu_popup::MenuPopup;
 pub use self::view_path::ViewPath;
+pub use self::panel::Panel;
 pub use self::progress_bar::ProgressBar;
 pub use self::select_view::SelectView;
 pub use self::shadow_view::ShadowView;

src/view/panel.rs

@@ -0,0 +1,33 @@
+use Printer;
+use vec::Vec2;
+use view::{View, ViewWrapper};
+
+/// Draws a border around a wrapped view.
+pub struct Panel<V: View> {
+    view: V,
+}
+
+impl<V: View> Panel<V> {
+    /// Creates a new panel around the given view.
+    pub fn new(view: V) -> Self {
+        Panel {
+            view: view,
+        }
+    }
+}
+
+
+impl<V: View> ViewWrapper for Panel<V> {
+    wrap_impl!(&self.view);
+
+    fn wrap_get_min_size(&mut self, req: Vec2) -> Vec2 {
+        // TODO: make borders conditional?
+        self.view.get_min_size(req - (2, 2)) + (2, 2)
+    }
+
+    fn wrap_draw(&self, printer: &Printer) {
+        printer.print_box((0, 0), printer.size);
+        self.view
+            .draw(&printer.sub_printer((1, 1), printer.size - (2, 2), true));
+    }
+}