Launcher: make launcher scrollable (#2881)

Launcher.py

@@ -161,7 +161,7 @@ def launch(exe, in_terminal=False):
 
 
 def run_gui():
-    from kvui import App, ContainerLayout, GridLayout, Button, Label
+    from kvui import App, ContainerLayout, GridLayout, Button, Label, ScrollBox, Widget
     from kivy.uix.image import AsyncImage
     from kivy.uix.relativelayout import RelativeLayout
 
@@ -185,11 +185,16 @@ def run_gui():
             self.container = ContainerLayout()
             self.grid = GridLayout(cols=2)
             self.container.add_widget(self.grid)
-            self.grid.add_widget(Label(text="General"))
+            self.grid.add_widget(Label(text="General", size_hint_y=None, height=40))
-            self.grid.add_widget(Label(text="Clients"))
+            self.grid.add_widget(Label(text="Clients", size_hint_y=None, height=40))
-            button_layout = self.grid  # make buttons fill the window
+            tool_layout = ScrollBox()
+            tool_layout.layout.orientation = "vertical"
+            self.grid.add_widget(tool_layout)
+            client_layout = ScrollBox()
+            client_layout.layout.orientation = "vertical"
+            self.grid.add_widget(client_layout)
 
-            def build_button(component: Component):
+            def build_button(component: Component) -> Widget:
                 """
                 Builds a button widget for a given component.
 
@@ -200,31 +205,26 @@ def run_gui():
                     None. The button is added to the parent grid layout.
 
                 """
-                button = Button(text=component.display_name)
+                button = Button(text=component.display_name, size_hint_y=None, height=40)
                 button.component = component
                 button.bind(on_release=self.component_action)
                 if component.icon != "icon":
                     image = AsyncImage(source=icon_paths[component.icon],
                                        size=(38, 38), size_hint=(None, 1), pos=(5, 0))
-                    box_layout = RelativeLayout()
+                    box_layout = RelativeLayout(size_hint_y=None, height=40)
                     box_layout.add_widget(button)
                     box_layout.add_widget(image)
-                    button_layout.add_widget(box_layout)
+                    return box_layout
-                else:
+                return button
-                    button_layout.add_widget(button)
 
             for (tool, client) in itertools.zip_longest(itertools.chain(
                     self._tools.items(), self._miscs.items(), self._adjusters.items()), self._clients.items()):
                 # column 1
                 if tool:
-                    build_button(tool[1])
+                    tool_layout.layout.add_widget(build_button(tool[1]))
-                else:
-                    button_layout.add_widget(Label())
                 # column 2
                 if client:
-                    build_button(client[1])
+                    client_layout.layout.add_widget(build_button(client[1]))
-                else:
-                    button_layout.add_widget(Label())
 
             return self.container
 

kvui.py

@@ -38,11 +38,13 @@ from kivy.clock import Clock
 from kivy.factory import Factory
 from kivy.properties import BooleanProperty, ObjectProperty
 from kivy.metrics import dp
+from kivy.effects.scroll import ScrollEffect
 from kivy.uix.widget import Widget
 from kivy.uix.button import Button
 from kivy.uix.gridlayout import GridLayout
 from kivy.uix.layout import Layout
 from kivy.uix.textinput import TextInput
+from kivy.uix.scrollview import ScrollView
 from kivy.uix.recycleview import RecycleView
 from kivy.uix.tabbedpanel import TabbedPanel, TabbedPanelItem
 from kivy.uix.boxlayout import BoxLayout
@@ -118,6 +120,17 @@ class ServerToolTip(ToolTip):
     pass
 
 
+class ScrollBox(ScrollView):
+    layout: BoxLayout
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.layout = BoxLayout(size_hint_y=None)
+        self.layout.bind(minimum_height=self.layout.setter("height"))
+        self.add_widget(self.layout)
+        self.effect_cls = ScrollEffect
+
+
 class HovererableLabel(HoverBehavior, Label):
     pass