Add volume control to bottom panel

Changes:
- Import a reworked version of the KUKSA.val client code from the
  Flutter dashboard app, with the aggregated signal Riverpod provider
  replaced with per-signal providers for the signal the homescreen
  needs and a couple of temperature ones it might use.  Using separate
  providers is more in-line with recommended Riverpod best practices.
- Various tweaks to enable using Riverpod.
- Split the bottom panel out into its own widget, and add a stack in
  it to layer the default logo panel with the volume control slider,
  which has been added as a new widget definition to provide the hook
  to drive timer based lowering behavior like the Qt homescreen does.
- The KUKSA.val connection widget has been added to the bottom panel
  rather than overriding the top-level widget as in the dashboard and
  HVAC apps.  This seems preferable with respect to still providing
  some functionality in the event KUKSA.val is unavailable.
- Remove the old demo dashboard and HVAC pages that are now unused,
  along with the image assets they needed, to allow cleaning up
  pubspec.yaml and ease maintenance.

Bug-AGL: SPEC-4659

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I5d9180a3461948a58321564e71134c4961ce0ef7

1 files changed, 0 insertions, 68 deletions

diff --git a/lib/homescreen_model.dart b/lib/homescreen_model.dart
deleted file mode 100644
index 7c1a26f..0000000
--- a/lib/homescreen_model.dart
+++ /dev/null
@@ -1,68 +0,0 @@
-import 'dart:collection';
-
-import 'package:flutter/foundation.dart';
-import 'package:flutter/material.dart';
-
-enum SwitchId {
-  hvacLeftSeat,
-  hvacRigthSeat,
-  hvacAc,
-  hvacAuto,
-  hvacCirculation,
-  hvacFan,
-  hvacAirDown,
-  hvacAirUp,
-  hvacFront,
-  hvacRear,
-}
-
-enum TemperatureId { leftSeat, rightSeat }
-
-class HomescreenModel extends ChangeNotifier {
-  // HVAC page
-
-  // fan speed
-  double _fanSpeed = 20;
-
-  double get fanSpeed => _fanSpeed;
-
-  set fanSpeed(double newhvacFanSpeed) {
-    _fanSpeed = newhvacFanSpeed;
-    notifyListeners();
-  }
-
-  // switch buttons
-  HashMap _switches = new HashMap<SwitchId, bool>();
-
-  bool getSwitchState(SwitchId id) => _switches[id] ?? false;
-
-  void setSwitchState(SwitchId id, bool newValue) {
-    _switches[id] = newValue;
-    notifyListeners();
-  }
-
-  void flipSwitch(SwitchId id) {
-    _switches[id] = !_switches[id];
-    notifyListeners();
-  }
-
-  // temperatures
-  HashMap _temperatures = new HashMap<TemperatureId, int>();
-
-  int getTemperature(TemperatureId id) => _temperatures[id] ?? 22;
-
-  void setTemperature(TemperatureId id, int newTemp) {
-    _temperatures[id] = newTemp;
-    notifyListeners();
-  }
-
-  HomescreenModel() {
-    // initialize the values
-    for (var id in SwitchId.values) {
-      _switches[id] = false;
-    }
-    for (var id in TemperatureId.values) {
-      _temperatures[id] = 22;
-    }
-  }
-}