Replace SizeRequest with simple Vec2

We may go back to an enum though, to handle text views in LinearLayouts.
But the previous Fixed/AtMost/Unknown distinction was useless.

src/div.rs

@@ -1,3 +1,5 @@
+
+/*
 /// Integer division that rounds up.
 pub fn div_up_usize(p: usize, q: usize) -> usize {
     div_up(p as u32, q as u32) as usize
@@ -11,3 +13,4 @@ pub fn div_up(p: u32, q: u32) -> u32 {
         1 + p / q
     }
 }
+*/

src/orientation.rs

@@ -2,7 +2,7 @@
 use vec::Vec2;
 
 /// Describes a vertical or horizontal orientation for a view.
-#[derive(Clone,Copy,PartialEq)]
+#[derive(Clone,Copy,Debug,PartialEq)]
 pub enum Orientation {
     /// Horizontal orientation
     Horizontal,

src/theme.rs

@@ -295,7 +295,6 @@ impl Color {
         } else if value.len() == 3 {
             // RGB values between 0 and 5 maybe?
             let rgb: Vec<_> = value.chars().map(|c| c as i16 - '0' as i16).collect();
-            println!("{:?}", rgb);
             if rgb.iter().all(|&i| i >= 0 && i < 6) {
                 Some(Color::RgbLowRes(rgb[0] as u8, rgb[1] as u8, rgb[2] as u8))
             } else {

src/view/box_view.rs

@@ -1,5 +1,7 @@
+use std::cmp;
+
 use vec::{ToVec2, Vec2};
-use super::{DimensionRequest, SizeRequest, View, ViewWrapper};
+use super::{View, ViewWrapper};
 
 /// `BoxView` is a wrapper around an other view, with a given minimum size.
 pub struct BoxView<T: View> {
@@ -28,16 +30,18 @@ impl<T: View> BoxView<T> {
 impl<T: View> ViewWrapper for BoxView<T> {
     wrap_impl!(&self.view);
 
-    fn wrap_get_min_size(&self, mut req: SizeRequest) -> Vec2 {
+    fn wrap_get_min_size(&self, mut req: Vec2) -> Vec2 {
         if self.size.x > 0 {
-            req.w = DimensionRequest::AtMost(self.size.x);
+            req.x = cmp::min(self.size.x, req.x);
         }
         if self.size.y > 0 {
-            req.h = DimensionRequest::AtMost(self.size.y);
+            req.y = cmp::min(self.size.y, req.y);
         }
 
         let mut size = self.view.get_min_size(req);
 
+        // Did he think he got to decide?
+        // Of course we have the last word here.
         if self.size.x > 0 {
             size.x = self.size.x;
         }

src/view/button.rs

@@ -3,7 +3,7 @@ use std::rc::Rc;
 use theme::ColorStyle;
 use Cursive;
 use vec::Vec2;
-use view::{SizeRequest, View};
+use view::{View};
 use event::*;
 use printer::Printer;
 
@@ -42,7 +42,7 @@ impl View for Button {
         });
     }
 
-    fn get_min_size(&self, _: SizeRequest) -> Vec2 {
+    fn get_min_size(&self, _: Vec2) -> Vec2 {
         // Meh. Fixed size we are.
         Vec2::new(2 + self.label.chars().count(), 1)
     }

src/view/dialog.rs

@@ -5,7 +5,7 @@ use Cursive;
 use align::*;
 use event::*;
 use theme::ColorStyle;
-use view::{DimensionRequest, Selector, SizeRequest, TextView, View};
+use view::{Selector, TextView, View};
 use view::{Button, SizedView};
 use vec::{ToVec4, Vec2, Vec4};
 use printer::Printer;
@@ -157,9 +157,9 @@ impl View for Dialog {
 
     }
 
-    fn get_min_size(&self, req: SizeRequest) -> Vec2 {
+    fn get_min_size(&self, req: Vec2) -> Vec2 {
         // Padding and borders are not available for kids.
-        let content_req = req.reduced(self.padding.combined() + self.borders.combined());
+        let content_req = req - (self.padding.combined() + self.borders.combined());
         let content_size = self.content.get_min_size(content_req);
 
         let mut buttons_size = Vec2::new(0, 0);
@@ -189,16 +189,13 @@ impl View for Dialog {
 
     fn layout(&mut self, mut size: Vec2) {
         // Padding and borders are taken, sorry.
+        // TODO: handle border-less themes?
         size = size - (self.borders.combined() + self.padding.combined());
-        let req = SizeRequest {
-            w: DimensionRequest::AtMost(size.x),
-            h: DimensionRequest::AtMost(size.y),
-        };
 
         // Buttons are kings, we give them everything they want.
         let mut buttons_height = 0;
         for button in self.buttons.iter_mut().rev() {
-            let size = button.get_min_size(req);
+            let size = button.get_min_size(size);
             buttons_height = max(buttons_height, size.y + 1);
             button.layout(size);
         }

src/view/edit_view.rs

@@ -4,7 +4,7 @@ use std::cmp::min;
 
 use theme::{ColorStyle, Effect};
 use vec::Vec2;
-use view::{IdView, SizeRequest, View};
+use view::{IdView, View};
 use event::*;
 use printer::Printer;
 
@@ -123,7 +123,7 @@ impl View for EditView {
         self.last_length = size.x;
     }
 
-    fn get_min_size(&self, _: SizeRequest) -> Vec2 {
+    fn get_min_size(&self, _: Vec2) -> Vec2 {
         Vec2::new(self.min_length, 1)
     }
 

src/view/full_view.rs

@@ -1,4 +1,4 @@
-use view::{DimensionRequest, SizeRequest, View, ViewWrapper};
+use view::{View, ViewWrapper};
 use vec::Vec2;
 
 /// Simple wrapper view that asks for all the space it can get.
@@ -16,18 +16,7 @@ impl<T: View> FullView<T> {
 impl<T: View> ViewWrapper for FullView<T> {
     wrap_impl!(&self.view);
 
-    fn wrap_get_min_size(&self, req: SizeRequest) -> Vec2 {
-        let w = match req.w {
-            DimensionRequest::Fixed(w) |
-            DimensionRequest::AtMost(w) => w,
-            DimensionRequest::Unknown => self.view.get_min_size(req).x,
-        };
-        let h = match req.h {
-            DimensionRequest::Fixed(h) |
-            DimensionRequest::AtMost(h) => h,
-            DimensionRequest::Unknown => self.view.get_min_size(req).y,
-        };
-
-        Vec2::new(w, h)
+    fn wrap_get_min_size(&self, req: Vec2) -> Vec2 {
+        req
     }
 }

src/view/linear_layout.rs

@@ -1,4 +1,4 @@
-use view::{DimensionRequest, SizeRequest, View};
+use view::View;
 use vec::Vec2;
 use printer::Printer;
 use orientation::Orientation;
@@ -115,6 +115,8 @@ impl View for LinearLayout {
         for (i, child) in self.children.iter_mut().enumerate() {
             child.view.draw(&printer.sub_printer(offset, child.size, i == self.focus));
 
+            // On the axis given by the orientation,
+            // add the child size to the offset.
             *self.orientation.get_ref(&mut offset) += self.orientation
                                                           .get(&child.size);
         }
@@ -122,18 +124,16 @@ impl View for LinearLayout {
 
     fn layout(&mut self, size: Vec2) {
         // Compute the very minimal required size
-        let req = SizeRequest {
-            w: DimensionRequest::AtMost(size.x),
-            h: DimensionRequest::AtMost(size.y),
-        };
+        // Look how mean we are: we offer the whole size to every child.
+        // As if they could get it all.
         let min_sizes: Vec<Vec2> = self.children
                                        .iter()
-                                       .map(|child| child.view.get_min_size(req))
+                                       .map(|child| Vec2::min(size, child.view.get_min_size(size)))
                                        .collect();
         let min_size = self.orientation.stack(min_sizes.iter());
 
         // Emulate 'non-strict inequality' on integers
-        // (default comparison on Vec2 is strict)
+        // (default comparison on Vec2 is strict, and (0,1).cmp((1,1)) is undefined)
         if !(min_size < size + (1, 1)) {
             // Error! Not enough space! Emergency procedures!
             return;
@@ -160,7 +160,7 @@ impl View for LinearLayout {
         }
     }
 
-    fn get_min_size(&self, req: SizeRequest) -> Vec2 {
+    fn get_min_size(&self, req: Vec2) -> Vec2 {
         // First, make a naive scenario: everything will work fine.
         let sizes: Vec<Vec2> = self.children
                                    .iter()

src/view/mod.rs

@@ -5,7 +5,6 @@ mod view_wrapper;
 
 // Essentials components
 mod position;
-mod request;
 mod view_path;
 
 // Helper bases
@@ -36,7 +35,6 @@ use printer::Printer;
 
 pub use self::position::{Position, Offset};
 
-pub use self::request::{DimensionRequest, SizeRequest};
 pub use self::scroll::ScrollBase;
 
 pub use self::id_view::IdView;
@@ -65,7 +63,7 @@ pub trait View {
     }
 
     /// Returns the minimum size the view requires under the given restrictions.
-    fn get_min_size(&self, SizeRequest) -> Vec2 {
+    fn get_min_size(&self, Vec2) -> Vec2 {
         Vec2::new(1, 1)
     }
 

src/view/select_view.rs

@@ -4,7 +4,7 @@ use std::rc::Rc;
 use theme::ColorStyle;
 use Cursive;
 use align::*;
-use view::{DimensionRequest, IdView, SizeRequest, View};
+use view::{IdView, View};
 use event::{Event, EventResult, Key};
 use vec::Vec2;
 use printer::Printer;
@@ -150,7 +150,10 @@ impl<T: 'static> View for SelectView<T> {
         });
     }
 
-    fn get_min_size(&self, req: SizeRequest) -> Vec2 {
+    fn get_min_size(&self, req: Vec2) -> Vec2 {
+        // Items here are not compressible.
+        // So no matter what the horizontal requirements are,
+        // we'll still return our longest item.
         let w = self.items
                     .iter()
                     .map(|item| item.label.len())
@@ -158,13 +161,7 @@ impl<T: 'static> View for SelectView<T> {
                     .unwrap_or(1);
         let h = self.items.len();
 
-        let scrolling = if let DimensionRequest::Fixed(r_h) = req.h {
-            r_h < h
-        } else if let DimensionRequest::AtMost(r_h) = req.h {
-            r_h < h
-        } else {
-            false
-        };
+        let scrolling = req.y < h;
 
         // Add 2 spaces for the scrollbar if we need
         let w = if scrolling {

src/view/shadow_view.rs

@@ -1,4 +1,4 @@
-use view::{SizeRequest, View, ViewWrapper};
+use view::{View, ViewWrapper};
 use printer::Printer;
 use vec::Vec2;
 use theme::ColorStyle;
@@ -20,8 +20,8 @@ impl<T: View> ShadowView<T> {
 impl<T: View> ViewWrapper for ShadowView<T> {
     wrap_impl!(&self.view);
 
-    fn wrap_get_min_size(&self, req: SizeRequest) -> Vec2 {
-        self.view.get_min_size(req.reduced((2, 2))) + (2, 2)
+    fn wrap_get_min_size(&self, req: Vec2) -> Vec2 {
+        self.view.get_min_size(req - (2, 2)) + (2, 2)
     }
 
     fn wrap_layout(&mut self, size: Vec2) {

src/view/stack_view.rs

@@ -1,7 +1,7 @@
 use std::any::Any;
 
 use vec::Vec2;
-use view::{DimensionRequest, Selector, ShadowView, SizeRequest, View, Position};
+use view::{Selector, ShadowView, View, Position};
 use event::{Event, EventResult};
 use printer::Printer;
 use theme::ColorStyle;
@@ -78,14 +78,10 @@ impl View for StackView {
     fn layout(&mut self, size: Vec2) {
         // The call has been made, we can't ask for more space anymore.
         // Let's make do with what we have.
-        let req = SizeRequest {
-            w: DimensionRequest::AtMost(size.x),
-            h: DimensionRequest::AtMost(size.y),
-        };
 
         for layer in &mut self.layers {
             // Give each guy what he asks for, within the budget constraints.
-            layer.size = Vec2::min(size, layer.view.get_min_size(req));
+            layer.size = Vec2::min(size, layer.view.get_min_size(size));
             layer.view.layout(layer.size);
 
             // We do it here instead of when adding a new layer because...?
@@ -97,16 +93,13 @@ impl View for StackView {
         }
     }
 
-    fn get_min_size(&self, size: SizeRequest) -> Vec2 {
+    fn get_min_size(&self, size: Vec2) -> Vec2 {
         // The min size is the max of all children's
-        let mut s = Vec2::new(1, 1);
 
-        for layer in &self.layers {
-            let vs = layer.view.get_min_size(size);
-            s = Vec2::max(s, vs);
-        }
-
-        s
+        self.layers
+            .iter()
+            .map(|layer| layer.view.get_min_size(size))
+            .fold(Vec2::new(1, 1), Vec2::max)
     }
 
     fn take_focus(&mut self) -> bool {

src/view/text_view.rs

@@ -1,8 +1,7 @@
 use std::cmp::max;
 
 use vec::Vec2;
-use view::{DimensionRequest, SizeRequest, View};
-use div::*;
+use view::View;
 use printer::Printer;
 use align::*;
 use event::*;
@@ -105,15 +104,6 @@ impl TextView {
             .fold(0, |sum, x| sum + x)
     }
 
-    // Given the specified height,
-    // how many columns do we need to properly display?
-    fn get_num_cols(&self, max_height: usize) -> usize {
-        let len = self.content.chars().count();
-        (div_up_usize(len, max_height)..len)
-            .find(|w| self.get_num_lines(*w) <= max_height)
-            .unwrap()
-    }
-
     // In the absence of any constraint, what size would we like?
     fn get_ideal_size(&self) -> Vec2 {
         let mut max_width = 0;
@@ -244,34 +234,19 @@ impl View for TextView {
         EventResult::Consumed(None)
     }
 
-    fn get_min_size(&self, size: SizeRequest) -> Vec2 {
-        match (size.w, size.h) {
-            // If we have no directive, ask for a single big line.
-            // TODO: what if the text has newlines??
-            (DimensionRequest::Unknown, DimensionRequest::Unknown) => self.get_ideal_size(),
-            (DimensionRequest::Fixed(w), _) => {
-                // In a BoxView or something.
-                let h = self.get_num_lines(w);
-                Vec2::new(w, h)
-            }
-            (_, DimensionRequest::Fixed(h)) => {
-                let w = self.get_num_cols(h);
-                Vec2::new(w, h)
-            }
-            (DimensionRequest::AtMost(w), _) => {
-                // Don't _force_ the max width, but take it if we have to.
-                let ideal = self.get_ideal_size();
+    fn get_min_size(&self, size: Vec2) -> Vec2 {
+        // If we have no directive, ask for a single big line.
+        // TODO: what if the text has newlines??
+        // Don't _force_ the max width, but take it if we have to.
+        let ideal = self.get_ideal_size();
 
-                if w >= ideal.x {
-                    // This is the cheap path
-                    ideal
-                } else {
-                    // This is the expensive one :(
-                    let h = self.get_num_lines(w);
-                    Vec2::new(w, h)
-                }
-            }
-            _ => unreachable!(),
+        if size.x >= ideal.x {
+            ideal
+        } else {
+            // Ok, se we have less width than we'd like.
+            // Take everything we can, and plan our height accordingly.
+            let h = self.get_num_lines(size.x);
+            Vec2::new(size.x, h)
         }
     }
 

src/view/view_wrapper.rs

@@ -1,7 +1,7 @@
 use std::any::Any;
 
 use vec::Vec2;
-use view::{Selector, SizeRequest, View};
+use view::{Selector, View};
 use printer::Printer;
 use event::{Event, EventResult};
 
@@ -21,7 +21,7 @@ pub trait ViewWrapper {
     }
 
     /// Wraps the get_min_size method.
-    fn wrap_get_min_size(&self, req: SizeRequest) -> Vec2 {
+    fn wrap_get_min_size(&self, req: Vec2) -> Vec2 {
         self.get_view().get_min_size(req)
     }
 
@@ -50,7 +50,7 @@ impl<T: ViewWrapper> View for T {
         self.wrap_draw(printer);
     }
 
-    fn get_min_size(&self, req: SizeRequest) -> Vec2 {
+    fn get_min_size(&self, req: Vec2) -> Vec2 {
         self.wrap_get_min_size(req)
     }