Added loading window and window group switching

src/dynalab/ui/windows.py

@@ -1,36 +1,136 @@
 # Copyright (C) 2026 Hector van der Aa <hector@h3cx.dev>
 # Copyright (C) 2026 Association Exergie <association.exergie@gmail.com>
 # SPDX-License-Identifier: GPL-3.0-or-later
-from os import wait
 import dearpygui.dearpygui as dpg
 
 import dpg_gauges as dpgg
 
-from dynalab.tags import MENU_WINDOW_DATA_INPUT
+from dynalab.state import AppState
+from dynalab.tags import (
+    MENU_FILE_QUIT,
+    MENU_RECORD_CONFIGURATION,
+    MENU_WINDOW_DATA_INPUT,
+    MENU_WINDOW_RECORD,
+    WINDOW_DATA_INPUT_GAUGE_GRID,
+    WINDOW_GROUP_DATA_INPUT,
+    WINDOW_GROUP_RECORD,
+)
+from dynalab.ui.routines import switch_window
+
+
+LOADING_WINDOW_WIDTH = 600
+LOADING_WINDOW_HEIGHT = 400
+
+
+def _loading_content_layout(
+    viewport_size: tuple[int, int],
+    logo_size: tuple[int, int],
+    text_size: tuple[int, int],
+    bottom_margin: int = 24,
+) -> tuple[list[float], list[float], float]:
+    viewport_width, viewport_height = viewport_size
+    logo_width, logo_height = logo_size
+    text_width, text_height = text_size
+
+    logo_pos = [
+        (viewport_width - logo_width) / 2,
+        (viewport_height - logo_height) / 2,
+    ]
+    text_row_pos = [
+        0,
+        max(viewport_height - text_height - bottom_margin, 0),
+    ]
+    text_spacer_width = max((viewport_width - text_width) / 2, 0)
+
+    return logo_pos, text_row_pos, text_spacer_width
 
 
 def build_loading() -> None:
-    with dpg.window(label="DynaLab", tag="loading_window", no_collapse=True):
+    with dpg.window(
+        label="DynaLab",
+        tag="loading_window",
+        width=LOADING_WINDOW_WIDTH,
+        height=LOADING_WINDOW_HEIGHT,
+        no_collapse=True,
+        no_resize=True,
+        no_move=True,
+        no_title_bar=True,
+    ):
         dpg.set_global_font_scale(0.5)
-        dpg.add_text(default_value="Loading DynaLab", tag="loading_text")
+
+        with dpg.group(horizontal=False, tag="loading_logo_group"):
+            dpg.add_image(texture_tag="logo", tag="loading_logo")
+
+        with dpg.group(horizontal=True, tag="loading_text_row"):
+            dpg.add_spacer(width=0, tag="loading_text_left_spacer")
+            dpg.add_text(
+                default_value="Loading DynaLab",
+                tag="loading_text",
+                color=(150, 150, 150, 255),
+            )
 
 
-def build_windows() -> None:
+def center_loading_content() -> None:
+    if not dpg.does_item_exist("loading_window"):
+        return
+
+    dpg.set_item_pos("loading_window", [0, 0])
+    dpg.set_item_width("loading_window", LOADING_WINDOW_WIDTH)
+    dpg.set_item_height("loading_window", LOADING_WINDOW_HEIGHT)
+
+    # These may be unavailable before the first rendered frame
+    logo_size = dpg.get_item_rect_size("loading_logo")
+    text_size = dpg.get_item_rect_size("loading_text")
+
+    if logo_size is None or text_size is None:
+        return
+
+    logo_pos, text_row_pos, text_spacer_width = _loading_content_layout(
+        (LOADING_WINDOW_WIDTH, LOADING_WINDOW_HEIGHT), logo_size, text_size
+    )
+
+    dpg.set_item_pos("loading_logo_group", logo_pos)
+    dpg.set_item_pos("loading_text_row", text_row_pos)
+    dpg.set_item_width("loading_text_left_spacer", text_spacer_width)
+
+
+def build_windows(state: AppState) -> None:
     with dpg.window(label="DynaLab", tag="main_window", no_collapse=True):
         with dpg.menu_bar():
             with dpg.menu(label="File"):
-                dpg.add_menu_item(label="Quit", enabled=True)
+                dpg.add_menu_item(tag=MENU_FILE_QUIT, label="Quit", enabled=True)
+            with dpg.menu(label="Record"):
+                dpg.add_menu_item(tag=MENU_RECORD_CONFIGURATION, label="Configuration")
             with dpg.menu(label="Window"):
-                dpg.add_menu_item(label="Data Input")
+                dpg.add_menu_item(
+                    tag=MENU_WINDOW_RECORD,
+                    label="Record",
+                    callback=switch_window,
+                    user_data=state,
+                )
+                dpg.add_menu_item(
+                    tag=MENU_WINDOW_DATA_INPUT,
+                    label="Data Input",
+                    callback=switch_window,
+                    user_data=state,
+                )
 
         with dpg.child_window(
             tag="content_area", autosize_x=True, height=0, border=False
         ):
             # with dpg.group(tag=MENU_WINDOW_DATA_INPUT):
-            with dpgg.gauge_panel(
-                label="Autobreak narrow panel", autosize_x=True, autosize_y=True
-            ):
-                with dpgg.gauge_grid(
-                    columns="auto", min_column_width=180, tag=MENU_WINDOW_DATA_INPUT
+            with dpg.group(tag=WINDOW_GROUP_DATA_INPUT):
+                state.window_map[MENU_WINDOW_DATA_INPUT] = WINDOW_GROUP_DATA_INPUT
+                with dpgg.gauge_panel(
+                    label="Autobreak narrow panel", autosize_x=True, autosize_y=True
                 ):
-                    pass
+                    with dpgg.gauge_grid(
+                        columns="auto",
+                        min_column_width=180,
+                        tag=WINDOW_DATA_INPUT_GAUGE_GRID,
+                    ):
+                        pass
+
+            with dpg.group(tag=WINDOW_GROUP_RECORD, show=False):
+                state.window_map[MENU_WINDOW_RECORD] = WINDOW_GROUP_RECORD
+                dpg.add_text("Some text")