frame api redesign :3

hui/Cargo.toml

@@ -26,7 +26,7 @@ document-features = "0.2"
 derive_setters = "0.1"
 derive_more = "0.99"
 tinyset = "0.4"
-enum_dispatch = "0.3"
+#enum_dispatch = "0.3"
 
 [features]
 default = ["builtin_elements", "builtin_font", "pixel_perfect_text"]

hui/src/frame.rs

@@ -1,67 +1,12 @@
-pub mod point;
-pub mod layer;
 use glam::Vec2;
-use layer::{FrameLayer, FrameLayerImpl};
 use crate::draw::UiDrawCommandList;
 
-///XXX: this is not used yet, and also kinda a mess, simplify?
-///Maybe limit to a single layer? (aka `Frame` will be just one of the options)
-///Because currently, this is just a duplicate of the dormal draw command system, but with a different name...
-///Then, there's no need for the positioning stuff too, which is a bit overkill and is kinda code duplication too!
-///aka Frame::Rectangle, Frame::NinePatch, ...
+pub mod point;
+mod rect;
+pub mod stack;
 
-/// A frame, which can contain multiple layers
-///
-/// Use these to construct complex backgrounds
-#[derive(Default, Clone)]
-pub struct Frame {
-  /// Layers of the frame
-  layers: Vec<FrameLayer>
-}
-
-impl<T: Into<FrameLayer>> From<T> for Frame {
-  fn from(layer: T) -> Self {
-    let mut frame = Self::default();
-    frame.add(layer.into());
-    frame
-  }
-}
-
-impl Frame {
-  /// Get the layer with the given index
-  #[inline]
-  pub fn layer(&self, index: usize) -> Option<&FrameLayer> {
-    self.layers.get(index)
-  }
-
-  /// Get a mutable reference to the layer with the given index
-  #[inline]
-  pub fn layer_mut(&mut self, index: usize) -> Option<&mut FrameLayer> {
-    self.layers.get_mut(index)
-  }
-
-  /// Add a layer to the frame
-  #[inline]
-  pub fn add(&mut self, layer: impl Into<FrameLayer>) -> &mut Self {
-    self.layers.push(layer.into());
-    self
-  }
-
-  /// Add a layer to the back of the frame
-  #[inline]
-  pub fn add_back(&mut self, layer: impl Into<FrameLayer>) -> &mut Self {
-    self.layers.insert(0, layer.into());
-    self
-  }
-
-  #[inline]
-  pub fn finish(&mut self) -> Self {
-    self.clone()
-  }
-
-  pub(crate) fn draw(&self, draw: &mut UiDrawCommandList, position: Vec2, parent_size: Vec2) {
-    for layer in &self.layers {
-      layer.draw(draw, position, parent_size);
-    }
-  }
+pub use rect::FrameRect;
+
+pub trait Frame {
+  fn draw(&self, draw: &mut UiDrawCommandList, position: Vec2, parent_size: Vec2);
 }

hui/src/frame/rect.rs

@@ -1,25 +1,13 @@
 use glam::Vec2;
-use enum_dispatch::enum_dispatch;
 use crate::{
   color,
   draw::{ImageHandle, RoundedCorners, UiDrawCommand, UiDrawCommandList},
   rect::{Corners, FillColor},
 };
-use super::point::FramePoint2d;
-
-#[enum_dispatch]
-pub(crate) trait FrameLayerImpl {
-  fn draw(&self, draw: &mut UiDrawCommandList, position: Vec2, parent_size: Vec2);
-}
+use super::{Frame, point::FramePoint2d};
 
 #[derive(Clone, Copy)]
-#[enum_dispatch(FrameLayerImpl)]
-pub enum FrameLayer {
-  Rect(RectFrame),
-}
-
-#[derive(Clone, Copy)]
-pub struct RectFrame {
+pub struct FrameRect {
   /// Background color of the frame\
   ///
   /// If the container has a background texture, it will be multiplied by this color
@@ -44,13 +32,25 @@ pub struct RectFrame {
   pub corner_radius: Corners<f32>,
 }
 
-impl<T: Into<FillColor>> From<T> for RectFrame {
-  fn from(color: T) -> Self {
+// impl<T: Into<FillColor>> From<T> for FrameRect {
+//   fn from(color: T) -> Self {
+//     Self::from_color(color)
+//   }
+// }
+
+impl From<FillColor> for FrameRect {
+  fn from(color: FillColor) -> Self {
     Self::from_color(color)
   }
 }
 
-impl RectFrame {
+impl From<ImageHandle> for FrameRect {
+  fn from(image: ImageHandle) -> Self {
+    Self::from_image(image)
+  }
+}
+
+impl FrameRect {
   pub fn from_color(color: impl Into<FillColor>) -> Self {
     Self {
       color: color.into(),
@@ -58,14 +58,6 @@ impl RectFrame {
     }
   }
 
-  pub fn from_color_rounded(color: impl Into<FillColor>, corner_radius: impl Into<Corners<f32>>) -> Self {
-    Self {
-      color: color.into(),
-      corner_radius: corner_radius.into(),
-      ..Self::default()
-    }
-  }
-
   pub fn from_image(image: ImageHandle) -> Self {
     Self {
       color: color::WHITE.into(),
@@ -82,17 +74,17 @@ impl RectFrame {
     }
   }
 
-  pub fn from_color_image_rounded(color: impl Into<FillColor>, image: ImageHandle, corner_radius: impl Into<Corners<f32>>) -> Self {
+  pub fn with_corner_radius(radius: impl Into<Corners<f32>>) -> Self {
     Self {
-      color: color.into(),
-      image: Some(image),
-      corner_radius: corner_radius.into(),
+      corner_radius: radius.into(),
       ..Self::default()
     }
   }
 
-  /// Inset the rectangle by the given amount
-  pub fn inset(self, inset: f32) -> Self {
+  //TODO: deprecate and replace
+
+  /// Inset the rectangle by the given amount in pixels
+  pub fn with_inset(self, inset: f32) -> Self {
     Self {
       top_left: self.top_left + Vec2::splat(inset).into(),
       bottom_right: self.bottom_right - Vec2::splat(inset).into(),
@@ -101,7 +93,7 @@ impl RectFrame {
   }
 }
 
-impl Default for RectFrame {
+impl Default for FrameRect {
   fn default() -> Self {
     Self {
       color: FillColor::default(),
@@ -113,7 +105,7 @@ impl Default for RectFrame {
   }
 }
 
-impl FrameLayerImpl for RectFrame {
+impl Frame for FrameRect {
   fn draw(&self, draw: &mut UiDrawCommandList, position: Vec2, parent_size: Vec2) {
     //TODO: handle bottom_right < top_left
     let top_left = self.top_left.resolve(parent_size);

hui/src/frame/stack.rs

@@ -0,0 +1,22 @@
+use glam::Vec2;
+use crate::draw::UiDrawCommandList;
+use super::Frame;
+
+pub struct FrameStack(pub Box<dyn Frame>, pub Box<dyn Frame>);
+
+impl Frame for FrameStack {
+  fn draw(&self, draw: &mut UiDrawCommandList, position: Vec2, parent_size: Vec2) {
+    self.0.draw(draw, position, parent_size);
+    self.1.draw(draw, position, parent_size);
+  }
+}
+
+pub trait FrameStackExt: Frame {
+  fn stack(self, other: impl Frame + 'static) -> FrameStack;
+}
+
+impl<T: Frame + 'static> FrameStackExt for T {
+  fn stack(self, other: impl Frame + 'static) -> FrameStack {
+    FrameStack(Box::new(self), Box::new(other))
+  }
+}