add cpu module with /proc/stat collector, visible grid cells, dark background, and fullscreen dashboard

panels/cpu/cpu_collector.gd

@@ -0,0 +1,51 @@
+extends RefCounted
+class_name CpuCollector
+
+
+var _previous_total: int = 0
+var _previous_idle: int = 0
+var _has_previous: bool = false
+
+
+func collect() -> float:
+    var stats: PackedStringArray = _read_stats()
+    if stats.is_empty():
+        return 0.0
+
+    var total: int = 0
+    var idle: int = 0
+
+    for i in range(1, stats.size()):
+        var val: int = stats[i].to_int()
+        total += val
+        if i == 4:  # idle is the 4th token (index 4)
+            idle = val
+
+    if not _has_previous:
+        _previous_total = total
+        _previous_idle = idle
+        _has_previous = true
+        return 0.0
+
+    var total_delta: int = total - _previous_total
+    var idle_delta: int = idle - _previous_idle
+
+    _previous_total = total
+    _previous_idle = idle
+
+    if total_delta == 0:
+        return 0.0
+
+    return 100.0 * (1.0 - float(idle_delta) / float(total_delta))
+
+
+func _read_stats() -> PackedStringArray:
+    var file := FileAccess.open("/proc/stat", FileAccess.READ)
+    if file == null:
+        return PackedStringArray()
+
+    var line: String = file.get_line()
+    if not line.begins_with("cpu "):
+        return PackedStringArray()
+
+    return line.split(" ", false)

panels/cpu/cpu_module.gd

@@ -0,0 +1,49 @@
+extends ModuleBase
+class_name CpuModule
+
+
+@onready var title_label: Label = %Title
+@onready var label: Label = %Label
+@onready var progress: ProgressBar = %ProgressBar
+
+var _collector: CpuCollector
+
+
+func initialize() -> void:
+    module_title = "CPU"
+    _collector = CpuCollector.new()
+    _style()
+
+
+func refresh(data: Dictionary) -> void:
+    var usage: float = _collector.collect()
+    if usage < 0.0:
+        return
+
+    var pct: int = roundi(usage)
+    label.text = "%d%%" % pct
+    progress.value = pct
+
+
+func _style() -> void:
+    title_label.add_theme_color_override("font_color", Color(0.7, 0.7, 0.8, 1.0))
+
+    label.add_theme_color_override("font_color", Color(0.9, 0.9, 1.0, 1.0))
+    label.add_theme_font_size_override("font_size", 48)
+
+    var fg := StyleBoxFlat.new()
+    fg.bg_color = Color(0.2, 0.5, 0.8, 1.0)
+    fg.corner_radius_top_left = 4
+    fg.corner_radius_top_right = 4
+    fg.corner_radius_bottom_right = 4
+    fg.corner_radius_bottom_left = 4
+
+    var bg := StyleBoxFlat.new()
+    bg.bg_color = Color(0.1, 0.1, 0.14, 1.0)
+    bg.corner_radius_top_left = 4
+    bg.corner_radius_top_right = 4
+    bg.corner_radius_bottom_right = 4
+    bg.corner_radius_bottom_left = 4
+
+    progress.add_theme_stylebox_override("fill", fg)
+    progress.add_theme_stylebox_override("background", bg)

panels/cpu/cpu_module.tscn

@@ -0,0 +1,40 @@
+[gd_scene format=3 uid="uid://bq3bs2hb4r7fb"]
+
+[ext_resource type="Script" path="res://panels/cpu/cpu_module.gd" id="1"]
+
+[node name="CpuModule" type="PanelContainer"]
+anchors_preset = 0
+script = ExtResource("1")
+
+[node name="MarginContainer" type="MarginContainer" parent="."]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+theme_constant_overrides/margin_left = 12
+theme_constant_overrides/margin_top = 12
+theme_constant_overrides/margin_right = 12
+theme_constant_overrides/margin_bottom = 12
+
+[node name="VBoxContainer" type="VBoxContainer" parent="MarginContainer"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+
+[node name="Title" type="Label" parent="MarginContainer/VBoxContainer"]
+unique_name_in_owner = true
+text = "CPU"
+
+[node name="Spacer" type="Control" parent="MarginContainer/VBoxContainer"]
+size_flags_vertical = 3
+
+[node name="Label" type="Label" parent="MarginContainer/VBoxContainer"]
+unique_name_in_owner = true
+horizontal_alignment = 1
+size_flags_horizontal = 4
+
+[node name="ProgressBar" type="ProgressBar" parent="MarginContainer/VBoxContainer"]
+unique_name_in_owner = true
+size_flags_horizontal = 4
+max_value = 100.0
+value = 0.0
+show_percentage = false

scenes/dashboard.gd

@@ -3,6 +3,36 @@ extends Control
 
 @onready var grid: DashboardGrid = %DashboardGrid
 
+var _modules: Array = []
+
 
 func _ready() -> void:
     get_window().mode = Window.MODE_FULLSCREEN
+    _set_background()
+    _add_modules()
+
+
+func _set_background() -> void:
+    var bg := StyleBoxFlat.new()
+    bg.bg_color = Color(0.08, 0.08, 0.12, 1.0)
+    add_theme_stylebox_override("panel", bg)
+
+
+func _add_modules() -> void:
+    var cpu := preload("res://panels/cpu/cpu_module.tscn").instantiate()
+    grid.place_module(cpu, 0, 0)
+    _modules.append(cpu)
+
+    # Start a timer to refresh all modules every second
+    var timer := Timer.new()
+    timer.timeout.connect(_refresh_modules)
+    timer.autostart = true
+    timer.wait_time = 1.0
+    add_child(timer)
+
+
+func _refresh_modules() -> void:
+    var data: Dictionary = {}
+    for mod in _modules:
+        if is_instance_valid(mod) and mod.has_method("refresh"):
+            mod.refresh(data)

scripts/dashboard_grid.gd

@@ -91,10 +91,27 @@ func _build_cells() -> void:
             var cell := PanelContainer.new()
             cell.name = "Cell_%d_%d" % [col, row]
             cell.mouse_filter = Control.MOUSE_FILTER_PASS
+            _style_cell(cell)
             add_child(cell)
             _cells[row].append(cell)
 
 
+func _style_cell(cell: PanelContainer) -> void:
+    var style := StyleBoxFlat.new()
+    style.bg_color = Color(0.14, 0.14, 0.18, 1.0)
+    style.border_width_left = 1
+    style.border_width_top = 1
+    style.border_width_right = 1
+    style.border_width_bottom = 1
+    style.border_color = Color(0.25, 0.25, 0.35, 1.0)
+    style.corner_radius_top_left = 6
+    style.corner_radius_top_right = 6
+    style.corner_radius_bottom_right = 6
+    style.corner_radius_bottom_left = 6
+    cell.add_theme_stylebox_override("panel", style)
+    cell.add_theme_stylebox_override("panel_focused", style)
+
+
 func _teardown_cells() -> void:
     for child in get_children():
         remove_child(child)
@@ -138,8 +155,8 @@ func _save_modules() -> void:
 
 func _restore_modules() -> void:
     for key in _module_positions:
-        var parts := key.split(",")
+        var parts: PackedStringArray = key.split(",")
-        var col := int(parts[0])
+        var col: int = int(parts[0])
         var row := int(parts[1])
         var module: Control = _module_positions[key]
 
@@ -149,7 +166,7 @@ func _restore_modules() -> void:
             # Place in the last available cell if original position no longer exists
             if _cells.size() > 0 and _cells[0].size() > 0:
                 var last_row := _cells.size() - 1
-                var last_col := _cells[last_row].size() - 1
+                var last_col: int = _cells[last_row].size() - 1
                 _set_cell_child(_cells[last_row][last_col], module)
             else:
                 module.queue_free()