diff --git a/src/lib.rs b/src/lib.rs
index 8c11e5e..fdab802 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -25,7 +25,7 @@ extern crate ncurses;
 pub mod event;
 pub mod view;
 pub mod printer;
-pub mod vec2;
+pub mod vec;
 
 mod div;
 mod margins;
@@ -36,7 +36,7 @@ use std::any::Any;
 use std::rc::Rc;
 use std::collections::HashMap;
 
-use vec2::Vec2;
+use vec::Vec2;
 use view::View;
 use printer::Printer;
 use view::{StackView,ViewPath};
diff --git a/src/margins.rs b/src/margins.rs
index bd9cccc..4dd524e 100644
--- a/src/margins.rs
+++ b/src/margins.rs
@@ -1,3 +1,5 @@
+use vec::Vec2;
+
 /// Fixed margins around a rectangular view.
 pub struct Margins {
     /// Left margin
@@ -20,4 +22,16 @@ impl Margins {
             bottom: bottom,
         }
     }
+
+    pub fn horizontal(&self) -> u32 {
+        self.left + self.right
+    }
+
+    pub fn vertical(&self) -> u32 {
+        self.top + self.bottom
+    }
+
+    pub fn combined(&self) -> Vec2 {
+        Vec2::new(self.horizontal(), self.vertical())
+    }
 }
diff --git a/src/printer.rs b/src/printer.rs
index 1fb7257..259d87d 100644
--- a/src/printer.rs
+++ b/src/printer.rs
@@ -1,7 +1,7 @@
 //! Makes drawing on ncurses windows easier.
 
 use ncurses;
-use vec2::{Vec2,ToVec2};
+use vec::{Vec2,ToVec2};
 
 /// Wrapper around a subset of a ncurses window.
 pub struct Printer {
diff --git a/src/vec2.rs b/src/vec.rs
similarity index 100%
rename from src/vec2.rs
rename to src/vec.rs
diff --git a/src/view/box_view.rs b/src/view/box_view.rs
index a7e834d..d6ba4d4 100644
--- a/src/view/box_view.rs
+++ b/src/view/box_view.rs
@@ -1,5 +1,5 @@
 use event::EventResult;
-use vec2::{Vec2,ToVec2};
+use vec::{Vec2,ToVec2};
 use super::{View,SizeRequest};
 use printer::Printer;
 
diff --git a/src/view/dialog.rs b/src/view/dialog.rs
index ab96a17..81ea66b 100644
--- a/src/view/dialog.rs
+++ b/src/view/dialog.rs
@@ -1,6 +1,6 @@
 use ::Cursive;
 use view::{View,ViewPath,SizeRequest,DimensionRequest};
-use vec2::{Vec2};
+use vec::{Vec2};
 use printer::Printer;
 
 enum Focus {
diff --git a/src/view/key_event_view.rs b/src/view/key_event_view.rs
index e2b38d7..83600eb 100644
--- a/src/view/key_event_view.rs
+++ b/src/view/key_event_view.rs
@@ -3,7 +3,7 @@ use std::rc::Rc;
 
 use ::Cursive;
 use event::{EventResult,Callback};
-use vec2::{Vec2};
+use vec::{Vec2};
 use super::{View,SizeRequest,ViewPath};
 use printer::Printer;
 
diff --git a/src/view/mod.rs b/src/view/mod.rs
index 4f7e0e9..80ddfee 100644
--- a/src/view/mod.rs
+++ b/src/view/mod.rs
@@ -17,7 +17,7 @@ pub use self::text_view::TextView;
 pub use self::dialog::Dialog;
 
 use event::EventResult;
-use vec2::Vec2;
+use vec::Vec2;
 use printer::Printer;
 
 /// Describe constraints on a view layout in one dimension.
diff --git a/src/view/stack_view.rs b/src/view/stack_view.rs
index 0d2d875..8db29da 100644
--- a/src/view/stack_view.rs
+++ b/src/view/stack_view.rs
@@ -1,6 +1,6 @@
 use std::cmp::max;
 
-use vec2::Vec2;
+use vec::Vec2;
 use view::{View,SizeRequest,DimensionRequest};
 use event::EventResult;
 use printer::Printer;
diff --git a/src/view/text_view.rs b/src/view/text_view.rs
index 7f98dae..45656aa 100644
--- a/src/view/text_view.rs
+++ b/src/view/text_view.rs
@@ -1,6 +1,6 @@
 use std::cmp;
 
-use vec2::Vec2;
+use vec::Vec2;
 use view::{View,DimensionRequest,SizeRequest};
 use div::*;
 use printer::Printer;