Add Dialog skeleton

Cargo.toml

@@ -19,3 +19,7 @@ git = "https://github.com/jeaye/ncurses-rs"
 [[example]]
 name = "hello_world"
 path = "examples/hello_world.rs"
+
+[[example]]
+name = "dialog"
+path = "examples/dialog.rs"

examples/dialog.rs

@@ -0,0 +1,14 @@
+extern crate cursive;
+
+use cursive::Cursive;
+use cursive::view::{TextView,Dialog};
+
+fn main() {
+    let mut siv = Cursive::new();
+
+    // Creates a dialog with a single "Quit" button
+    siv.add_layer(Dialog::new(TextView::new("Hello Dialog!"))
+                    .button("Quit", |s,_| s.quit()));
+
+    siv.run();
+}

src/lib.rs

@@ -28,6 +28,9 @@ pub mod printer;
 pub mod vec2;
 
 mod div;
+mod margins;
+
+pub use margins::Margins;
 
 use std::any::Any;
 use std::rc::Rc;

src/margins.rs

@@ -0,0 +1,23 @@
+/// Fixed margins around a rectangular view.
+pub struct Margins {
+    /// Left margin
+    pub left: u32,
+    /// Right margin
+    pub right: u32,
+    /// Top margin
+    pub top: u32,
+    /// Bottom margin
+    pub bottom: u32,
+}
+
+impl Margins {
+    /// Creates new margins.
+    pub fn new(left: u32, right: u32, top: u32, bottom: u32) -> Self {
+        Margins {
+            left: left,
+            right: right,
+            top: top,
+            bottom: bottom,
+        }
+    }
+}

src/vec2.rs

@@ -53,24 +53,26 @@ impl ToVec2 for (usize,usize) {
     }
 }
 
-impl Add for Vec2 {
+impl <T: ToVec2> Add<T> for Vec2 {
     type Output = Vec2;
 
-    fn add(self, other: Vec2) -> Vec2 {
+    fn add(self, other: T) -> Vec2 {
+        let ov = other.to_vec2();
         Vec2 {
-            x: self.x + other.x,
-            y: self.y + other.y,
+            x: self.x + ov.x,
+            y: self.y + ov.y,
         }
     }
 }
 
-impl Sub for Vec2 {
+impl <T: ToVec2> Sub<T> for Vec2 {
     type Output = Vec2;
 
-    fn sub(self, other: Vec2) -> Vec2 {
+    fn sub(self, other: T) -> Vec2 {
+        let ov = other.to_vec2();
         Vec2 {
-            x: self.x - other.x,
-            y: self.y - other.y,
+            x: self.x - ov.x,
+            y: self.y - ov.y,
         }
     }
 }

src/view/dialog.rs

@@ -0,0 +1,56 @@
+use ::Cursive;
+use view::{View,ViewPath,SizeRequest,DimensionRequest};
+use vec2::{Vec2};
+use printer::Printer;
+
+enum Focus {
+    Content,
+    Button(usize),
+    Nothing,
+}
+
+pub struct Dialog {
+    content: Box<View>,
+    buttons: Vec<Box<View>>,
+    focus: Focus,
+}
+
+impl Dialog {
+    pub fn new<V: View + 'static>(view: V) -> Self {
+        Dialog {
+            content: Box::new(view),
+            buttons: Vec::new(),
+            focus: Focus::Nothing,
+        }
+    }
+
+    pub fn button<'a, F>(self, label: &'a str, cb: F) -> Self
+        where F: Fn(&mut Cursive, &ViewPath)
+    {
+        self
+    }
+}
+
+fn offset_request(request: DimensionRequest, offset: i32) -> DimensionRequest {
+    match request {
+        DimensionRequest::Fixed(w) => DimensionRequest::Fixed((w as i32 + offset) as u32),
+        DimensionRequest::AtMost(w) => DimensionRequest::AtMost((w as i32 + offset) as u32),
+        DimensionRequest::Unknown => DimensionRequest::Unknown,
+    }
+}
+
+impl View for Dialog {
+    fn draw(&self, printer: &Printer) {
+        
+    }
+
+    fn get_min_size(&self, size: SizeRequest) -> Vec2 {
+        let content_req = SizeRequest {
+            w: offset_request(size.w, -2),
+            h: offset_request(size.h, -2),
+        };
+        let content_size = self.content.get_min_size(content_req);
+
+        content_size + (2u32,2u32)
+    }
+}

src/view/mod.rs

@@ -5,6 +5,7 @@ mod stack_view;
 mod text_view;
 mod key_event_view;
 mod view_path;
+mod dialog;
 
 use std::any::Any;
 
@@ -13,6 +14,7 @@ pub use self::key_event_view::KeyEventView;
 pub use self::box_view::BoxView;
 pub use self::stack_view::StackView;
 pub use self::text_view::TextView;
+pub use self::dialog::Dialog;
 
 use event::EventResult;
 use vec2::Vec2;

src/view/view_path.rs

@@ -12,4 +12,20 @@ impl ViewPath {
             path: Vec::new(),
         }
     }
+
+    pub fn from<T: ToPath>(path: T) -> Self {
+        path.to_path()
+    }
+}
+
+pub trait ToPath {
+    fn to_path(self) -> ViewPath;
+}
+
+impl <'a> ToPath for &'a [usize] {
+    fn to_path(self) -> ViewPath {
+        ViewPath {
+            path: self.to_owned(),
+        }
+    }
 }