main axis align

kubi-ui/examples/test.rs

@@ -1,5 +1,5 @@
 use std::time::Instant;
-use glam::{Vec2, IVec2, UVec2};
+use glam::{Vec2, IVec2, UVec2, vec4};
 use glium::{backend::glutin::SimpleWindowBuilder, Surface};
 use winit::{
   event::{Event, WindowEvent},
@@ -7,7 +7,7 @@ use winit::{
 };
 use kubi_ui::{
   KubiUi,
-  backend::glium::GliumUiRenderer, element::{progress_bar::ProgressBar, container::{Container, Sides}, UiElement}, UiSize
+  backend::glium::GliumUiRenderer, element::{progress_bar::ProgressBar, container::{Container, Sides, Alignment}, UiElement, rect::Rect}, UiSize, UiDirection
 };
 
 fn main() {
@@ -34,18 +34,85 @@ fn main() {
 
         kui.begin();
 
+        let z = instant.elapsed().as_secs_f32().sin().powi(2);
+
         kui.add(Container {
           gap: 5.,
           padding: Sides::all(5.),
+          align: (Alignment::Begin, Alignment::Center),
+          size: (UiSize::Percentage(1.), UiSize::Percentage(1.)),
           elements: vec![
             Box::new(ProgressBar {
               value: 0.5,
               ..Default::default()
             }),
+          ],
+          ..Default::default()
+        }, resolution);
+
+        kui.add(Container {
+          gap: 5.,
+          padding: Sides::all(5.),
+          align: (Alignment::End, Alignment::Center),
+          size: (UiSize::Percentage(1.), UiSize::Percentage(1.)),
+          elements: vec![
             Box::new(ProgressBar {
-              value: instant.elapsed().as_secs_f32().sin().powi(2),
+              value: z,
               ..Default::default()
             }),
+            Box::new(Container {
+              size: (UiSize::Percentage(1.), UiSize::Auto),
+              align: (Alignment::Center, Alignment::End),
+              padding: Sides::all(5.),
+              gap: 10.,
+              elements: vec![
+                Box::new(Rect {
+                  size: (UiSize::Percentage(0.5), UiSize::Pixels(30.)),
+                  color: Some(vec4(0.75, 0., 0., 1.))
+                }),
+                Box::new(Rect {
+                  size: (UiSize::Percentage(z / 2. + 0.5), UiSize::Pixels(30.)),
+                  color: Some(vec4(0., 0.75, 0., 1.))
+                }),
+              ],
+              ..Default::default()
+            }),
+            Box::new(Rect {
+              size: (UiSize::Percentage(z / 2. + 0.5), UiSize::Pixels(30.)),
+              color: Some(vec4(0., 0.75, 0., 1.))
+            }),
+            Box::new(Container {
+              gap: 5.,
+              padding: Sides::all(5.),
+              background: Some(vec4(0., 0., 0., 0.5)),
+              direction: UiDirection::Horizontal,
+              elements: {
+                let mut x: Vec<Box<dyn UiElement>> = vec![];
+                for i in 0..10 {
+                  x.push(Box::new(Rect {
+                    size: (UiSize::Pixels(50.), UiSize::Pixels(50.)),
+                    color: if i == 1 {
+                      Some(vec4(0.75, 0.75, 0.75, 0.75))
+                    } else {
+                      Some(vec4(0.5, 0.5, 0.5, 0.75))
+                    }
+                  }));
+                }
+                x
+              },
+              ..Default::default()
+            }),
+            Box::new(Container {
+              background: Some(vec4(1., 0., 0., 1.)),
+              padding: Sides::horizontal_vertical(30., 5.),
+              elements: vec![
+                Box::new(Rect {
+                  size: (UiSize::Pixels(50.), UiSize::Pixels(50.)),
+                  color: Some(vec4(1., 1., 1., 0.75))
+                })
+              ],
+              ..Default::default()
+            })
           ],
           ..Default::default()
         }, resolution);

kubi-ui/src/element/builtin/container.rs

@@ -4,11 +4,12 @@ use crate::{
   UiSize,
   LayoutInfo,
   draw::UiDrawCommand,
-  measure::Response,
+  measure::{Response, Hints},
   state::StateRepo,
   element::UiElement
 };
 
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
 pub enum Alignment {
   Begin,
   Center,
@@ -51,8 +52,9 @@ impl<T: Clone> Sides<T> {
 }
 
 pub struct Container {
-  pub min_size: (UiSize, UiSize),
-  pub max_size: (UiSize, UiSize),
+  // pub min_size: (UiSize, UiSize),
+  // pub max_size: (UiSize, UiSize),
+  pub size: (UiSize, UiSize),
   pub direction: UiDirection,
   //pub reverse: bool,
   pub gap: f32,
@@ -67,13 +69,15 @@ pub struct Container {
 impl Default for Container {
   fn default() -> Self {
     Self {
-      min_size: (UiSize::Auto, UiSize::Auto),
-      max_size: (UiSize::Auto, UiSize::Auto),
+      // min_size: (UiSize::Auto, UiSize::Auto),
+      // max_size: (UiSize::Auto, UiSize::Auto),
+      size: (UiSize::Auto, UiSize::Auto),
       direction: UiDirection::Vertical,
       //reverse: false,
       gap: 0.,
       padding: Sides::all(0.),
-      align: (Alignment::Center, Alignment::Begin),
+      ///Primary/secondary axis
+      align: (Alignment::Begin, Alignment::Begin),
       background: Default::default(),
       borders: Default::default(),
       clip: Default::default(),
@@ -83,7 +87,8 @@ impl Default for Container {
 }
 
 impl Container {
-  pub fn measure_max_size(&self, layout: &LayoutInfo) -> Vec2 {
+  pub fn measure_max_inner_size(&self, layout: &LayoutInfo) -> Vec2 {
+    //TODO take explicit size into account
     layout.max_size - vec2(
       self.padding.left + self.padding.right,
       self.padding.top + self.padding.bottom,
@@ -94,28 +99,55 @@ impl Container {
 impl UiElement for Container {
   fn measure(&self, state: &StateRepo, layout: &LayoutInfo) -> Response {
     let mut size = Vec2::ZERO;
+    //if matches!(self.size.0, UiSize::Auto) || matches!(self.size.1, UiSize::Auto) {
     let mut leftover_gap = Vec2::ZERO;
     for element in &self.elements {
       let measure = element.measure(state, &LayoutInfo {
         position: layout.position + size,
-        max_size: self.measure_max_size(layout), // - size TODO
+        max_size: self.measure_max_inner_size(layout), // - size TODO
         direction: self.direction,
       });
       match self.direction {
         UiDirection::Horizontal => {
-          size.x += measure.desired_size.x + self.gap;
-          size.y = size.y.max(measure.desired_size.y);
+          size.x += measure.size.x + self.gap;
+          size.y = size.y.max(measure.size.y);
           leftover_gap.x = self.gap;
         },
         UiDirection::Vertical => {
-          size.x = size.x.max(measure.desired_size.x);
-          size.y += measure.desired_size.y + self.gap;
+          size.x = size.x.max(measure.size.x);
+          size.y += measure.size.y + self.gap;
           leftover_gap.y = self.gap;
         }
       }
     }
     size -= leftover_gap;
-    Response { desired_size: size }
+
+    let inner_content_size = Some(size);
+
+    size += vec2(
+      self.padding.left + self.padding.right,
+      self.padding.top + self.padding.bottom,
+    );
+
+    match self.size.0 {
+      UiSize::Auto => (),
+      UiSize::Percentage(percentage) => size.x = layout.max_size.x * percentage,
+      UiSize::Pixels(pixels) => size.x = pixels,
+    }
+    match self.size.1 {
+      UiSize::Auto => (),
+      UiSize::Percentage(percentage) => size.y = layout.max_size.y * percentage,
+      UiSize::Pixels(pixels) => size.y = pixels,
+    }
+
+    Response {
+      size,
+      hints: Hints {
+        inner_content_size,
+        ..Default::default()
+      },
+      user_data: None
+    }
   }
 
   fn process(&self, measure: &Response, state: &mut StateRepo, layout: &LayoutInfo, draw: &mut Vec<UiDrawCommand>) {
@@ -125,7 +157,7 @@ impl UiElement for Container {
     if let Some(color) = self.background {
       draw.push(UiDrawCommand::Rectangle {
         position,
-        size: measure.desired_size,
+        size: measure.size,
         color
       });
     }
@@ -134,48 +166,61 @@ impl UiElement for Container {
     position += vec2(self.padding.left, self.padding.top);
 
     //alignment
-    //TODO: REQUIRES MAX MEASURE SIZES!
-    // match self.align.0 {
-    //   Alignment::Begin => (),
-    //   Alignment::Center => {
-    //     position.x += (layout.max_size.x - measure.desired_size.x) / 2.;
-    //   },
-    //   Alignment::End => {
-    //     position.x += layout.max_size.x - measure.desired_size.x;
-    //   }
-    // }
-    // match self.align.1 {
-    //   Alignment::Begin => (),
-    //   Alignment::Center => {
-    //     position.y += (layout.max_size.y - measure.desired_size.y) / 2.;
-    //   },
-    //   Alignment::End => {
-    //     position.y += layout.max_size.y - measure.desired_size.y;
-    //   }
-    // }
+    match (self.align.0, self.direction) {
+      (Alignment::Begin, _) => (),
+      (Alignment::Center, UiDirection::Horizontal) => {
+        position.x += (measure.size.x - measure.hints.inner_content_size.unwrap().x) / 2.;
+      },
+      (Alignment::Center, UiDirection::Vertical) => {
+        position.y += (measure.size.y - measure.hints.inner_content_size.unwrap().y) / 2.;
+      },
+      (Alignment::End, UiDirection::Horizontal) => {
+        position.x += measure.size.x - measure.hints.inner_content_size.unwrap().x - self.padding.right - self.padding.left;
+      },
+      (Alignment::End, UiDirection::Vertical) => {
+        position.y += measure.size.y - measure.hints.inner_content_size.unwrap().y - self.padding.bottom - self.padding.top;
+      }
+    }
 
     for element in &self.elements {
       //(passing max size from layout rather than actual bounds for the sake of consistency with measure() above)
 
-      let layout = LayoutInfo {
+      let mut el_layout = LayoutInfo {
         position,
-        max_size: self.measure_max_size(layout),
+        max_size: self.measure_max_inner_size(layout),
         direction: self.direction,
       };
 
       //measure
-      let el_measure = element.measure(state, &layout);
+      let el_measure = element.measure(state, &el_layout);
+
+      //align (on sec. axis)
+      match (self.align.1, self.direction) {
+        (Alignment::Begin, _) => (),
+        (Alignment::Center, UiDirection::Horizontal) => {
+          el_layout.position.y += (measure.size.y - self.padding.bottom - self.padding.top - el_measure.size.y) / 2.;
+        },
+        (Alignment::Center, UiDirection::Vertical) => {
+          el_layout.position.x += (measure.size.x - self.padding.left - self.padding.right - el_measure.size.x) / 2.;
+        },
+        (Alignment::End, UiDirection::Horizontal) => {
+          el_layout.position.y += measure.size.y - el_measure.size.y - self.padding.bottom;
+        },
+        (Alignment::End, UiDirection::Vertical) => {
+          el_layout.position.x += measure.size.x - el_measure.size.x - self.padding.right;
+        }
+      }
 
       //process
-      element.process(&el_measure, state, &layout, draw);
+      element.process(&el_measure, state, &el_layout, draw);
 
       //layout
       match self.direction {
         UiDirection::Horizontal => {
-          position.x += el_measure.desired_size.x + self.gap;
+          position.x += el_measure.size.x + self.gap;
         },
         UiDirection::Vertical => {
-          position.y += el_measure.desired_size.y + self.gap;
+          position.y += el_measure.size.y + self.gap;
         }
       }
     }

kubi-ui/src/element/builtin/progress_bar.rs

@@ -33,7 +33,7 @@ impl UiElement for ProgressBar {
 
   fn measure(&self, _: &StateRepo, layout: &LayoutInfo) -> Response {
     Response {
-      desired_size: vec2(
+      size: vec2(
         match self.size.0 {
           UiSize::Auto => layout.max_size.x.max(300.),
           UiSize::Percentage(p) => layout.max_size.x * p,
@@ -44,7 +44,9 @@ impl UiElement for ProgressBar {
           UiSize::Percentage(p) => layout.max_size.y * p,
           UiSize::Pixels(p) => p,
         }
-      )
+      ),
+      hints: Default::default(),
+      user_data: None,
     }
   }
 
@@ -53,14 +55,14 @@ impl UiElement for ProgressBar {
     if value < 1. {
       draw.push(UiDrawCommand::Rectangle {
         position: layout.position,
-        size: measure.desired_size,
+        size: measure.size,
         color: self.color_background
       });
     }
     if value > 0. {
       draw.push(UiDrawCommand::Rectangle {
         position: layout.position,
-        size: measure.desired_size * vec2(value, 1.0),
+        size: measure.size * vec2(value, 1.0),
         color: self.color_foreground
       });
     }

kubi-ui/src/element/builtin/rect.rs

@@ -25,7 +25,7 @@ impl Default for Rect {
 impl UiElement for Rect {
   fn measure(&self, _state: &StateRepo, layout: &LayoutInfo) -> Response {
     Response {
-      desired_size: vec2(
+      size: vec2(
         match self.size.0 {
           UiSize::Auto => layout.max_size.x,
           UiSize::Percentage(percentage) => layout.max_size.x * percentage,
@@ -36,7 +36,9 @@ impl UiElement for Rect {
           UiSize::Percentage(percentage) => layout.max_size.y * percentage,
           UiSize::Pixels(pixels) => pixels,
         },
-      )
+      ),
+      hints: Default::default(),
+      user_data: None
     }
   }
 
@@ -44,7 +46,7 @@ impl UiElement for Rect {
     if let Some(color) = self.color {
       draw.push(UiDrawCommand::Rectangle {
         position: layout.position,
-        size: measure.desired_size,
+        size: measure.size,
         color,
       });
     }

kubi-ui/src/element/builtin/spacer.rs

@@ -19,10 +19,12 @@ impl Default for Spacer {
 impl UiElement for Spacer {
   fn measure(&self, state: &StateRepo, layout: &LayoutInfo) -> Response {
     Response {
-      desired_size: match layout.direction {
+      size: match layout.direction {
         UiDirection::Horizontal => vec2(self.0, 0.),
         UiDirection::Vertical => vec2(0., self.0),
-      }
+      },
+      hints: Default::default(),
+      user_data: None
     }
   }
 

kubi-ui/src/measure.rs

@@ -1,5 +1,15 @@
 use glam::Vec2;
 
-pub struct Response {
-  pub desired_size: Vec2
+#[derive(Default)]
+#[non_exhaustive]
+pub struct Hints {
+  pub inner_content_size: Option<Vec2>,
+  pub inner_content_size_cache: Option<Vec<Vec2>>,
+}
+
+#[derive(Default)]
+pub struct Response {
+  pub size: Vec2,
+  pub hints: Hints,
+  pub user_data: Option<Box<dyn std::any::Any>>,
 }