Use StringTree to store the rendered layout

And print the entire layout at once

src/musicplayer/musicplayer.gleam

@@ -146,7 +146,6 @@ fn update_playback_time_loop(
   interval_ms: Int,
 ) {
   process.sleep(interval_ms)
-  // TODO only update if state is playing
   update_playback_time(mpv, ui)
 
   update_playback_time_loop(mpv, ui, interval_ms)

src/musicplayer/ui/layout.gleam

@@ -1,11 +1,7 @@
 import gleam/dict
-import gleam/float
-import gleam/int
 import gleam/list
-import gleam/string
 import gleam/string_tree.{type StringTree}
 
-import musicplayer/logging/logging
 import musicplayer/ui/internal
 
 pub type Layout {
@@ -13,109 +9,33 @@ pub type Layout {
 }
 
 pub type Section {
-  Section(String)
-
   Root
   Header
   Search
   PlaybackTime
 }
 
-// pub type Section {
-//   Root
-//   Header
-//   Search
-//   PlaybackTime
-//   Test
-
-//   Row1
-//   A
-//   B
-
-//   Row2
-//   C
-//   D
-// }
-
-pub type NodeType {
-  Container
-  Row
-  Cell
-}
-
-/// A Nodes width and height is in percentage (of the available width/height of its parent Node)
 pub type Node {
-  Node(
-    t: NodeType,
-    content: String,
-    width_percent: Int,
-    height_percent: Int,
-    children: List(Section),
-  )
+  Node(content: String, x: Int, y: Int, children: List(Section))
 }
 
 pub fn new() -> Layout {
   let nodes =
     dict.from_list([
       #(
-        Section("Root"),
-        Node(
-          t: Container,
-          content: "container",
-          width_percent: 100,
-          height_percent: 100,
-          children: [
-            Section("Row1"),
-            Section("Row2"),
-          ],
-        ),
-      ),
-      #(
-        Section("Row1"),
-        Node(
-          t: Row,
-          content: "row 1",
-          width_percent: 100,
-          height_percent: 50,
-          children: [
-            Section("A"),
-            Section("A"),
-          ],
-        ),
-      ),
-      #(
-        Section("A"),
-        Node(
-          t: Cell,
-          content: "cell 1",
-          width_percent: 50,
-          height_percent: 100,
-          children: [],
-        ),
-      ),
-      #(
-        Section("B"),
-        Node(
-          t: Cell,
-          content: "cell 2",
-          width_percent: 50,
-          height_percent: 100,
-          children: [],
-        ),
-      ),
-      #(
-        Section("Row2"),
-        Node(
-          t: Row,
-          content: "row 1",
-          width_percent: 100,
-          height_percent: 50,
-          children: [],
-        ),
+        Root,
+        Node(content: "", x: 0, y: 0, children: [
+          Header,
+          Search,
+          PlaybackTime,
+        ]),
       ),
+      #(Header, Node(content: "Music Player", x: 1, y: 1, children: [])),
+      #(Search, Node(content: "", x: 30, y: 1, children: [])),
+      #(PlaybackTime, Node(content: "00:00", x: 1, y: 2, children: [])),
     ])
 
-  Layout(width: 0, height: 0, nodes: nodes)
+  Layout(0, 0, nodes: nodes)
 }
 
 pub fn update_section(
@@ -141,139 +61,30 @@ pub fn update_dimensions(layout: Layout, width: Int, height: Int) -> Layout {
   Layout(..layout, width:, height:)
 }
 
-pub fn render(layout: Layout) -> Nil {
-  internal.clear_screen()
-  [layout.width, layout.height]
-  |> list.map(int.to_string)
-  |> string.join(" ")
-  |> string.append("layout - render: ", _)
-  |> logging.log
-
-  let container_width = int.to_float(layout.width)
-  let container_height = int.to_float(layout.height)
-  let container_top_left_x = 1
-  let container_top_left_y = 1
-
+pub fn render(layout: Layout, from: Section) -> Nil {
   string_tree.new()
-  |> render_loop(
-    layout,
-    container_width,
-    container_height,
-    container_top_left_x,
-    container_top_left_y,
-    0,
-    Section("Root"),
-    _,
-  )
+  |> render_loop(layout, from, _)
   |> string_tree.to_string
   |> internal.print
 }
 
 pub fn render_loop(
   layout: Layout,
-  container_width: Float,
-  container_height: Float,
-  container_top_left_x: Int,
-  container_top_left_y: Int,
-  index: Int,
   from: Section,
-  tree: StringTree,
+  into: StringTree,
 ) -> StringTree {
-  let margin = 2.0
-
   case dict.get(layout.nodes, from) {
-    Error(_) -> tree
+    Error(_) -> into
     Ok(node) -> {
-      let final_tree =
-        list.index_map(node.children, fn(child, i) { #(i, child) })
-        |> list.fold(tree, fn(updated_tree: StringTree, ic: #(Int, Section)) {
-          let #(i, child) = ic
-
-          let cw =
-            container_width
-            *. { int.to_float(node.width_percent) /. 100.0 }
-            -. margin
-            |> float.floor
-
-          let ch =
-            container_height
-            *. { int.to_float(node.height_percent) /. 100.0 }
-            -. margin
-            |> float.floor
-
-          let cx = container_top_left_x + 1
-          let cy = container_top_left_y + 1
-          render_loop(layout, cw, ch, cx, cy, i, child, updated_tree)
-        })
-
-      logging.log("section: " <> string.inspect(from))
-      logging.log("section type: " <> string.inspect(node.t))
-      logging.log("index: " <> string.inspect(index))
-      logging.log("container width: " <> float.to_string(container_width))
-      logging.log("container height: " <> float.to_string(container_height))
-
-      let width =
-        container_width *. { int.to_float(node.width_percent) /. 100.0 }
-        |> float.floor
-        |> float.truncate
-
-      let height =
-        container_height *. { int.to_float(node.height_percent) /. 100.0 }
-        |> float.floor
-        |> float.truncate
-
-      logging.log("section width: " <> int.to_string(width))
-      logging.log("section height: " <> int.to_string(height))
-
-      let #(cx, cy) = case node.t {
-        Container -> #(container_top_left_x, container_top_left_y)
-        Row -> #(
-          container_top_left_x,
-          container_top_left_y + { index * height },
+      let parent =
+        string_tree.append(
+          into,
+          internal.chars_at(node.content, node.x, node.y),
         )
-        Cell -> #(
-          container_top_left_x + { index * width },
-          container_top_left_y,
-        )
-      }
 
-      logging.log("cx: " <> int.to_string(cx))
-      logging.log("cy: " <> int.to_string(cy))
-
-      final_tree
-      |> string_tree.append(draw_box(cx, cy, width, height))
-      // Box heading
-      |> string_tree.append(internal.chars_at(node.content, cx, cy))
+      list.fold(node.children, parent, fn(into_acc, child) {
+        render_loop(layout, child, into_acc)
+      })
     }
   }
 }
-
-fn draw_box(x: Int, y: Int, width: Int, height: Int) -> String {
-  let box_tree = string_tree.new()
-  let box_chars = #("┌", "┐", "└", "┘", "─", "│")
-  let #(tl, tr, bl, br, h, v) = box_chars
-
-  let box_tree =
-    string_tree.append(
-      box_tree,
-      internal.chars_at(tl <> string.repeat(h, width - 2) <> tr, x, y),
-    )
-
-  let box_trees =
-    list.range(1, height - 2)
-    |> list.map(fn(row) {
-      box_tree
-      |> string_tree.append(internal.chars_at(v, x, y + row))
-      |> string_tree.append(internal.chars_at(v, x + width - 1, y + row))
-    })
-
-  string_tree.append(
-    string_tree.concat(box_trees),
-    internal.chars_at(
-      bl <> string.repeat(h, width - 2) <> br,
-      x,
-      y + height - 1,
-    ),
-  )
-  |> string_tree.to_string
-}

src/musicplayer/ui/ui.gleam

@@ -3,7 +3,6 @@ import gleam/int
 import gleam/list
 import gleam/otp/actor
 import gleam/string
-import gleam/string_tree.{type StringTree}
 
 import musicplayer/logging/logging
 import musicplayer/ui/control.{type Control}
@@ -39,7 +38,7 @@ pub fn new() -> Result(Subject(Control), String) {
         internal.clear_screen()
         internal.hide_cursor()
 
-        redraw_loop(redraw)
+        redraw_on_update_loop(redraw)
       })
 
       Ok(ui)
@@ -64,18 +63,21 @@ fn handle_message(
           |> string.append("ui - updating dimensions: ", _)
           |> logging.log
 
-          let layout = layout.update_dimensions(state.layout, width, height)
-
-          process.send(state.redraw, layout)
-          actor.continue(State(..state, layout:))
+          actor.continue(
+            State(
+              ..state,
+              layout: layout.update_dimensions(state.layout, width, height),
+            ),
+          )
         }
       }
     }
     control.UpdateState(section, content) -> {
       let layout = layout.update_section(state.layout, section, content)
+      let state = State(..state, layout:)
 
       actor.send(state.redraw, layout)
-      actor.continue(State(..state, layout:))
+      actor.continue(state)
     }
 
     control.Exit(reply_to) -> {
@@ -86,11 +88,13 @@ fn handle_message(
   }
 }
 
-fn redraw_loop(redraw: Subject(Layout)) -> Nil {
-  process.receive_forever(redraw)
-  |> layout.render
+fn redraw_on_update_loop(redraw: Subject(Layout)) -> Nil {
+  let layout = process.receive_forever(redraw)
 
-  redraw_loop(redraw)
+  internal.clear_screen()
+  layout.render(layout, layout.Root)
+
+  redraw_on_update_loop(redraw)
 }
 
 fn update_dimensions_on_interval(ui: Subject(Control), interval_ms: Int) {
@@ -104,28 +108,3 @@ fn update_dimensions_on_interval(ui: Subject(Control), interval_ms: Int) {
   process.sleep(interval_ms)
   update_dimensions_on_interval(ui, interval_ms)
 }
-// fn render_layout(layout: Layout, from: Section) -> Nil {
-//   string_tree.new()
-//   |> render_layout_loop(layout, from, _)
-//   |> string_tree.to_string
-//   |> ui_internal.print
-// }
-
-// fn render_layout_loop(
-//   layout: Layout,
-//   from: Section,
-//   tree: StringTree,
-// ) -> StringTree {
-//   case dict.get(layout.nodes, from) {
-//     Error(_) -> tree
-//     Ok(node) -> {
-//       let acc_after_children =
-//         list.fold(node.children, tree, fn(current_acc, child_id) {
-//           render_layout_loop(layout, child_id, current_acc)
-//         })
-
-//       acc_after_children
-//       |> string_tree.append(ui_internal.chars_at(node.content, node.x, node.y))
-//     }
-//   }
-// }

test/musicplayer/ui/layout_test.gleam

@@ -1,87 +0,0 @@
-// import gleam/dict
-// import gleam/int
-// import gleeunit
-
-// import musicplayer/ui/layout.{type Node, Layout, Section}
-
-// pub fn main() -> Nil {
-//   gleeunit.main()
-// }
-
-// pub fn foo_test() {
-//   let expected = ""
-
-//   let layout =
-//     Layout(
-//       width: 80,
-//       height: 20,
-//       nodes:,
-//       dict.from_list([
-//         #(
-//           Section("Root"),
-//           Node(
-//             t: Container,
-//             content: "container",
-//             width_percent: 100,
-//             height_percent: 100,
-//             children: [
-//               Section("Row1"),
-//               Section("Row2"),
-//             ],
-//           ),
-//         ),
-//         #(
-//           Section("Row1"),
-//           Node(
-//             t: Row,
-//             content: "row 1",
-//             width_percent: 100,
-//             height_percent: 50,
-//             children: [
-//               Section("A"),
-//               Section("B"),
-//             ],
-//           ),
-//         ),
-//         #(
-//           Section("A"),
-//           Node(
-//             t: Cell,
-//             content: "cell 1",
-//             width_percent: 50,
-//             height_percent: 100,
-//             children: [],
-//           ),
-//         ),
-//         #(
-//           B,
-//           Node(
-//             t: Cell,
-//             content: "cell 2",
-//             width_percent: 50,
-//             height_percent: 100,
-//             children: [],
-//           ),
-//         ),
-//         #(
-//           Section("Row2"),
-//           Node(
-//             t: Row,
-//             content: "row 1",
-//             width_percent: 100,
-//             height_percent: 50,
-//             children: [],
-//           ),
-//         ),
-//       ]),
-//     )
-
-//   let container_width = int.to_float(layout.width)
-//   let container_height = int.to_float(layout.height)
-//   let container_top_left_x = 1
-//   let container_top_left_y = 1
-
-//   let assert Ok(data) =
-//     layout.render_loop(layout, container_width, container_height)
-//   assert data == 123.456789
-// }