From 2803ac03dbe7366836f175112a119cad7a0942bd Mon Sep 17 00:00:00 2001
From: griffi-gh <prasol258@gmail.com>
Date: Tue, 21 Nov 2023 01:03:04 +0100
Subject: [PATCH] wip new gui

---
 kubi/src/gui_v2.rs | 92 ++++++++++++++++++++++++++++++++++++++++++++++
 kubi/src/lib.rs    |  1 +
 2 files changed, 93 insertions(+)
 create mode 100644 kubi/src/gui_v2.rs

diff --git a/kubi/src/gui_v2.rs b/kubi/src/gui_v2.rs
new file mode 100644
index 0000000..f1df83e
--- /dev/null
+++ b/kubi/src/gui_v2.rs
@@ -0,0 +1,92 @@
+use glam::{Vec2, vec2, Vec4};
+use shipyard::Unique;
+
+pub enum UiSize {
+  Auto,
+  Percentage(f32),
+  Pixels(f32),
+}
+
+struct LayoutInfo {
+  position: Vec2,
+  max_preferred_size: Vec2,
+}
+
+struct Response {
+  size: Vec2
+}
+
+pub trait UiElement {
+  fn process(&self, layout: &LayoutInfo, draw: &mut Vec<UiDrawCall>) -> Response;
+  fn measure(&self, layout: &LayoutInfo) -> Option<Response> { None }
+}
+
+pub enum LayoutDirection {
+  Horizontal,
+  Vertical
+}
+
+pub struct LayoutBox {
+  pub direction: LayoutDirection,
+  pub gap: f32,
+  pub elements: Vec<Box<dyn UiElement>>,
+}
+
+struct ProgressBar {
+  size: (UiSize, UiSize),
+  value: f32,
+  color_foreground: Vec4,
+  color_background: Vec4,
+}
+
+const BAR_HEIGHT: f32 = 20.0;
+
+impl UiElement for ProgressBar {
+  fn measure(&self, layout: &LayoutInfo) -> Option<Response> {
+    let width = match self.size.0 {
+      UiSize::Auto => layout.max_preferred_size.x,
+      UiSize::Percentage(p) => layout.max_preferred_size.x * p,
+      UiSize::Pixels(p) => p,
+    };
+    let height = match self.size.1 {
+      UiSize::Auto => BAR_HEIGHT,
+      UiSize::Percentage(p) => layout.max_preferred_size.y * p,
+      UiSize::Pixels(p) => p,
+    };
+    let size = Vec2::new(width, height);
+    Some(Response { size })
+  }
+
+  fn process(&self, layout: &LayoutInfo, draw: &mut Vec<UiDrawCall>) -> Response {
+    let measure = self.measure(layout).unwrap();
+
+    draw.push(UiDrawCall::Rectangle {
+      position: layout.position,
+      size: measure.size,
+      color: self.color_background
+    });
+    draw.push(UiDrawCall::Rectangle {
+      position: layout.position,
+      size: measure.size * vec2(self.value, 1.0),
+      color: self.color_foreground
+    });
+
+    measure
+  }
+}
+
+enum UiDrawCall {
+  Rectangle {
+    ///Position in pixels
+    position: Vec2,
+    ///Size in pixels
+    size: Vec2,
+    ///Color (RGBA)
+    color: Vec4,
+  }
+}
+
+#[derive(Unique)]
+struct UiDrawCalls {
+  pub calls: Vec<UiDrawCall>,
+}
diff --git a/kubi/src/lib.rs b/kubi/src/lib.rs
index 889d76d..67cf8c1 100644
--- a/kubi/src/lib.rs
+++ b/kubi/src/lib.rs
@@ -30,6 +30,7 @@ pub(crate) mod cursor_lock;
 pub(crate) mod control_flow;
 pub(crate) mod state;
 pub(crate) mod gui;
+pub(crate) mod gui_v2;
 pub(crate) mod networking;
 pub(crate) mod init;
 pub(crate) mod color;