Add icon button variants and expand integration tests

Introduces a Python example for IconButton variants, including normal, disabled, and toggle states. Expands integration tests to cover disabled, selected, and unselected states for standard, filled, filled tonal, and outlined icon buttons, with corresponding golden images for macOS. Minor code cleanups and docstring updates are also included.

Author: FeodorFitsner

packages/flet/lib/src/controls/icon_button.dart

@@ -80,7 +80,7 @@ class _IconButtonControlState extends State<IconButtonControl>
           widget.control.getBoxConstraints("size_constraints");
       var autofocus = widget.control.getBool("autofocus", false)!;
       var enableFeedback = widget.control.getBool("enable_feedback", true)!;
-      var selected = widget.control.getBool("selected", false)!;
+      var selected = widget.control.getBool("selected");
       var mouseCursor = widget.control.getMouseCursor("mouse_cursor");
       var url = widget.control.getUrl("url");
 

packages/flet/lib/src/controls/view.dart

@@ -253,28 +253,6 @@ class _ViewControlState extends State<ViewControl> {
           child: scaffold);
     }
 
-    if (pageData?.widgetsDesign == PageDesign.material) {
-      scaffold = CupertinoTheme(
-        data: pageData?.themeMode == ThemeMode.light ||
-                ((pageData?.themeMode == null ||
-                        pageData?.themeMode == ThemeMode.system) &&
-                    pageData?.brightness == Brightness.light)
-            ? parseCupertinoTheme(
-                control.parent!.get("theme"), context, Brightness.light)
-            : control.parent!.getString("dark_theme") != null
-                ? parseCupertinoTheme(
-                    control.parent!.get("dark_theme"), context, Brightness.dark)
-                : parseCupertinoTheme(
-                    control.parent!.get("theme"), context, Brightness.dark),
-        child: scaffold,
-      );
-    } else if (pageData?.widgetsDesign == PageDesign.cupertino) {
-      scaffold = Theme(
-        data: materialTheme,
-        child: scaffold,
-      );
-    }
-
     var showAppStartupScreen =
         FletBackend.of(context).showAppStartupScreen ?? false;
     var appStartupScreenMessage =

sdk/python/examples/controls/icon_button/variants.py

@@ -0,0 +1,104 @@
+import flet as ft
+
+
+def main(page: ft.Page):
+    page.title = "IconButton variants"
+    page.padding = 10
+    page.horizontal_alignment = ft.CrossAxisAlignment.CENTER
+    page.vertical_alignment = ft.MainAxisAlignment.CENTER
+
+    def toggle_icon_button(e):
+        e.control.selected = not e.control.selected
+
+    page.add(
+        ft.Row(
+            alignment=ft.MainAxisAlignment.CENTER,
+            spacing=50,
+            controls=[
+                # Normal buttons column (enabled only)
+                ft.Column(
+                    horizontal_alignment=ft.CrossAxisAlignment.CENTER,
+                    spacing=20,
+                    controls=[
+                        ft.Text(
+                            "Normal",
+                            theme_style=ft.TextThemeStyle.BODY_MEDIUM,
+                        ),
+                        ft.IconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                        ),
+                        ft.FilledIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                        ),
+                        ft.FilledTonalIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                        ),
+                        ft.OutlinedIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                        ),
+                    ],
+                ),
+                # Disabled buttons column
+                ft.Column(
+                    horizontal_alignment=ft.CrossAxisAlignment.CENTER,
+                    spacing=20,
+                    controls=[
+                        ft.Text(
+                            "Disabled",
+                            theme_style=ft.TextThemeStyle.BODY_MEDIUM,
+                        ),
+                        ft.IconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                            disabled=True,
+                        ),
+                        ft.FilledIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                            disabled=True,
+                        ),
+                        ft.FilledTonalIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                            disabled=True,
+                        ),
+                        ft.OutlinedIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                            disabled=True,
+                        ),
+                    ],
+                ),
+                # Toggle buttons column
+                ft.Column(
+                    horizontal_alignment=ft.CrossAxisAlignment.CENTER,
+                    spacing=20,
+                    controls=[
+                        ft.Text(
+                            "Toggle",
+                            theme_style=ft.TextThemeStyle.BODY_MEDIUM,
+                        ),
+                        ft.IconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                            selected=False,
+                            on_click=toggle_icon_button,
+                        ),
+                        ft.FilledIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                            selected=False,
+                            on_click=toggle_icon_button,
+                        ),
+                        ft.FilledTonalIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                            selected=False,
+                            on_click=toggle_icon_button,
+                        ),
+                        ft.OutlinedIconButton(
+                            icon=ft.Icons.FILTER_DRAMA,
+                            selected=False,
+                            on_click=toggle_icon_button,
+                        ),
+                    ],
+                ),
+            ],
+        ),
+    )
+
+
+ft.run(main)

sdk/python/packages/flet/integration_tests/conftest.py

@@ -1,8 +1,9 @@
 from pathlib import Path
 
-import flet.testing as ftt
 import pytest_asyncio
 
+import flet.testing as ftt
+
 
 @pytest_asyncio.fixture(scope="module")
 async def flet_app(request):