Client: diagrams in local folders (setting)

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Client/Settings.py

@@ -9,10 +9,11 @@ from typing import Callable
 import flet as ft
 import tomlkit
 
+import LocalDiagrams
 from App import App
 from Core import (
-    AppConfig, AssetsDir, AvailableThemes, ChipButton, DataHome, ExportSettings, Home, ImportSettings,
-    InstalledFontFamilies, LoadSharedSettings, Palette, SharedSettings,
+    AppConfig, AssetsDir, AvailableThemes, ChipButton, DataHome, ExportSettings, Home, HumanSize,
+    ImportSettings, InstalledFontFamilies, LoadSharedSettings, Palette, SharedSettings,
 )
 
 DialogWidth = 700
@@ -109,6 +110,16 @@ def ShowSettingsDialog(TheApp: App, OnSaved: Callable[[bool], None], StartCatego
     )
     FontSizeField = ft.TextField(label="Text size", value=str(Config.FontSize), keyboard_type=ft.KeyboardType.NUMBER, width=160)
 
+    LocalDiagramsSwitch = ft.Switch(label="Draw diagrams in local folders", value=Config.LocalDiagrams)
+    ToolsBytes = LocalDiagrams.ToolsSize()
+    LocalDiagramsNote = _Note(
+        "```mermaid blocks (flowcharts and the like) as pictures, drawn on this computer. The first one "
+        "downloads what that needs: ~150 MB with Chrome, Chromium, Brave or Edge installed, ~430 MB without. "
+        "Off: deletes those downloads"
+        + (f" ({HumanSize(ToolsBytes)} now)." if ToolsBytes else ".")
+        + " On a server, the server draws them either way."
+    )
+
     def ToggleMenuEntry(e) -> None:
         SetMenuEntry(not MenuEntryPath.exists())
         MenuButton.content = "Remove from app menu" if MenuEntryPath.exists() else "Add to app menu"
@@ -217,6 +228,8 @@ def ShowSettingsDialog(TheApp: App, OnSaved: Callable[[bool], None], StartCatego
             ft.Divider(height=1, color=Palette.Surface1),
             ft.Text("Markdown editing"),
             MarkdownEditingPicker,
+            LocalDiagramsSwitch,
+            LocalDiagramsNote,
             ft.Divider(height=1, color=Palette.Surface1),
             OwnAppearance,
         ], spacing=12, scroll=ft.ScrollMode.AUTO),
@@ -266,6 +279,8 @@ def ShowSettingsDialog(TheApp: App, OnSaved: Callable[[bool], None], StartCatego
         Config.ShowSidebar = SidebarSwitch.value
         Config.ShowFilesInTree = TreeFilesSwitch.value
         Config.MarkdownEditing = MarkdownEditingPicker.value or Config.MarkdownEditing
+        RemoveDiagramTools = Config.LocalDiagrams and not LocalDiagramsSwitch.value
+        Config.LocalDiagrams = LocalDiagramsSwitch.value
         Config.GraphShowDirectories = GraphDirectoriesSwitch.value
         Config.GraphColourByDepth = ColourByDepthSwitch.value
         Config.GraphShrinkByDepth = ShrinkByDepthSwitch.value
@@ -289,6 +304,14 @@ def ShowSettingsDialog(TheApp: App, OnSaved: Callable[[bool], None], StartCatego
         TheApp.Close()
         OnSaved(SourceAfter != SourceBefore)
         TheApp.Notify("Settings saved.", "success")
+        if RemoveDiagramTools:
+            def RemoveTools() -> None:
+                Freed = LocalDiagrams.ToolsSize()
+                LocalDiagrams.Remove()
+                if Freed:
+                    TheApp.Notify(f"Removed the diagram downloads ({HumanSize(Freed)}).", "success")
+
+            Page.run_thread(RemoveTools)
 
     TheApp.DialogOpen = True
     Page.show_dialog(ft.AlertDialog(