New main branch for flutter/flet rewrite

melter/gui.py

@@ -0,0 +1,97 @@
+import flet as ft
+from functools import lru_cache
+from mtpy.meltpool_tomography import MeltpoolTomography
+import panel as pn
+from time import sleep
+
+
+URL = "localhost"
+PORT = 1234
+PBAR_WIDTH = 256
+
+
+def main(page: ft.Page):
+    page.title = "Minimal GUI Test"
+
+    page.window_height = 100.0
+    page.window_width = 512.0
+    page.max_height = 100.0
+    page.max_width = 512.0
+    page.max_window_height = 100.0
+    page.max_window_width = 512.0
+    page.update()
+    placeholder = ft.Row(
+        [ft.ProgressRing()],
+        alignment=ft.MainAxisAlignment.CENTER,
+        height=100,
+        width=512,
+    )
+    page.add(placeholder)
+    page.window_height = 100.0
+    page.window_width = 512.0
+    sleep(0.1)
+    page.update()
+
+    # webview = ft.WebView(f"http://{URL}:{PORT}")
+    pbar = ft.ProgressBar(width=PBAR_WIDTH)
+    pbar.value = 0
+
+    def pbar_wrapper(iterator, length=None, *args, **kwargs):
+        l = length if length is not None else len(iterator)
+        increment = PBAR_WIDTH // l
+        pbar.value = 0
+        for i in iterator:
+            page.update()
+            yield i
+            pbar.value += increment
+            page.update()
+        pbar.value = PBAR_WIDTH
+        page.update()
+
+    @lru_cache(maxsize=1)
+    def get_engine():
+        mt = MeltpoolTomography()
+        mt.loader.progressbar = pbar_wrapper
+        return mt
+
+    mt = get_engine()
+
+    def open_filepicker(_):
+        return file_picker.get_directory_path()
+
+    def on_dialog_result(e: ft.FilePickerResultEvent):
+        mt.read_layers(e.path)
+        plot = mt.scatter2d()
+        scatter_pane = pn.pane.HoloViews(plot)
+        pn.serve(scatter_pane, PORT, URL, show=True)
+        page.update()
+
+
+    file_picker = ft.FilePicker(on_result=on_dialog_result)
+    page.overlay.append(file_picker)
+    file_picker_button = ft.ElevatedButton(
+        "Choose files...",
+        on_click=open_filepicker,
+    )
+
+    page.remove(placeholder)
+    page.add(
+        ft.Column(
+            [
+                ft.Row(
+                    [
+                        file_picker_button,
+                        pbar,
+                    ],
+                    alignment=ft.MainAxisAlignment.CENTER,
+                ),
+                # webview,
+            ],
+            alignment=ft.MainAxisAlignment.CENTER,
+        )
+    )
+    sleep(0.1)
+
+    page.window_height = 100.0
+    page.window_width = 512.0
+    page.update()