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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:visual_graphs/graph_editor/globals.dart'; | ||
| import 'package:visual_graphs/graph_editor/models/graph.dart'; | ||
| import 'package:visual_graphs/helpers/data_structures/pair.dart'; | ||
| import 'package:visual_graphs/helpers/material_color_generator.dart'; | ||
| import 'package:visual_graphs/helpers/notifiers/set_notifier.dart'; | ||
|
|
||
| class Kruskal { | ||
| int weight = 0; | ||
| UnionFind<Vertex> unionFind = UnionFind(); | ||
| final SetNotifier<Edge> includedEdges = SetNotifier<Edge>(); | ||
| ValueNotifier<Edge?> currentEdge = ValueNotifier<Edge?>(null); | ||
|
|
||
| void start() async { | ||
| greyOut(); | ||
| updateColors(); | ||
|
|
||
| List<Edge> edges = Globals.game.graph.edges | ||
| ..sort((a, b) => a.weight.compareTo(b.weight)); | ||
|
|
||
| for (var edge in edges) { | ||
| await Future.delayed(const Duration(milliseconds: 500)); | ||
| await checkEdge(currentEdge.value = edge); | ||
| } | ||
| currentEdge.value = null; | ||
| } | ||
|
|
||
| bool makesCycle(Edge edge) { | ||
| return unionFind.find(edge.from).first == unionFind.find(edge.to).first; | ||
| } | ||
|
|
||
| Future checkEdge(Edge edge) async { | ||
| edge.component | ||
| ..edgeWidth += 2 | ||
| ..setColors(Colors.white, Colors.white); | ||
|
|
||
| edge.from.component | ||
| ..radius = Globals.defaultVertexRadius + 5 | ||
| ..drawBorder = true; | ||
|
|
||
| edge.to.component | ||
| ..radius = Globals.defaultVertexRadius + 5 | ||
| ..drawBorder = true; | ||
|
|
||
| await Future.delayed(const Duration(milliseconds: 500)); | ||
|
|
||
| edge.component.edgeWidth = Globals.defaultEdgeWidth; | ||
| edge.from.component | ||
| ..radius = Globals.defaultVertexRadius | ||
| ..drawBorder = false; | ||
| edge.to.component | ||
| ..radius = Globals.defaultVertexRadius | ||
| ..drawBorder = false; | ||
|
|
||
| if (!edge.isSelfEdge && !makesCycle(edge)) { | ||
| includeEdge(edge); | ||
| } else { | ||
| edge.component.setColors(Colors.black, Colors.black); | ||
| } | ||
| updateColors(); | ||
| } | ||
|
|
||
| void includeEdge(Edge edge) { | ||
| unionFind.union(edge.from, edge.to); | ||
| includedEdges.add(edge); | ||
| weight += edge.weight; | ||
| } | ||
|
|
||
| void updateColors() { | ||
| for (var edge in includedEdges.set) { | ||
| var color = unionFind.find(edge.from).second ?? Colors.white; | ||
| edge.component.setColors(color, color); | ||
| edge.from.component.setColors(color, color); | ||
| edge.to.component.setColors(color, color); | ||
| } | ||
| } | ||
|
|
||
| void greyOut() { | ||
| for (var vertex in Globals.game.graph.vertices) { | ||
| vertex.component.setColors(Colors.grey.shade800, Colors.grey.shade800); | ||
| } | ||
| for (var edge in Globals.game.graph.edges) { | ||
| edge.component.setColors(Colors.grey.shade800, Colors.grey.shade800); | ||
| } | ||
| } | ||
|
|
||
| void clear() { | ||
| weight = 0; | ||
| unionFind.clear(); | ||
| includedEdges.clear(); | ||
| } | ||
| } | ||
|
|
||
| class UnionFind<T> { | ||
| final MaterialColorGenerator materialColorGenerator = | ||
| MaterialColorGenerator(); | ||
|
|
||
| Map<T, Pair<T, Color?>> parent = {}; | ||
|
|
||
| union(T a, T b) { | ||
| var aParent = find(a); | ||
| var bParent = find(b); | ||
|
|
||
| if (aParent.first == bParent.first) { | ||
| return; | ||
| } | ||
|
|
||
| switch ((aParent.second != null, bParent.second != null)) { | ||
| case (true, true): | ||
| parent[aParent.first] = bParent; | ||
| break; | ||
| case (true, false): | ||
| parent[bParent.first] = aParent; | ||
| break; | ||
| case (false, true): | ||
| parent[aParent.first] = bParent; | ||
| break; | ||
| case (false, false): | ||
| var color = materialColorGenerator.next(); | ||
| parent[aParent.first] = Pair(bParent.first, color); | ||
| parent[bParent.first] = Pair(bParent.first, color); | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| Pair<T, Color?> find(T a) { | ||
| if (parent[a] == null) { | ||
| parent[a] = Pair(a, null); | ||
| return parent[a]!; | ||
| } else { | ||
| if (parent[a]!.first == a) { | ||
| return parent[a]!; | ||
| } else { | ||
| return parent[a] = find(parent[a]!.first); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| void clear() { | ||
| parent.clear(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,212 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:visual_graphs/graph_editor/globals.dart'; | ||
| import 'package:visual_graphs/graph_editor/widgets/game_info_box.dart'; | ||
|
|
||
| class EditorControls extends StatefulWidget { | ||
| const EditorControls({super.key}); | ||
|
|
||
| @override | ||
| State<EditorControls> createState() => _EditorControlsState(); | ||
| } | ||
|
|
||
| class _EditorControlsState extends State<EditorControls> { | ||
| @override | ||
| Widget build(BuildContext context) { | ||
| bool smallScreen = MediaQuery.of(context).size.width < 600; | ||
|
|
||
| if (Globals.game.gameMode == GameMode.pickVertex) { | ||
| return Padding( | ||
| padding: const EdgeInsets.all(20.0), | ||
| child: Row( | ||
| mainAxisSize: MainAxisSize.max, | ||
| crossAxisAlignment: CrossAxisAlignment.center, | ||
| mainAxisAlignment: MainAxisAlignment.start, | ||
| children: [ | ||
| const SizedBox(width: 40), | ||
| const Spacer(), | ||
| const Text( | ||
| "Pick a vertex", | ||
| style: TextStyle( | ||
| color: Colors.white, | ||
| fontSize: 20, | ||
| ), | ||
| ), | ||
| const Spacer(), | ||
| SizedBox( | ||
| width: 40, | ||
| child: IconButton.filledTonal( | ||
| tooltip: "Cancel", | ||
| onPressed: () => Globals.game.restorePreviousGameMode(), | ||
| icon: const Icon(Icons.cancel), | ||
| style: squareIconButtonStyle, | ||
| ), | ||
| ) | ||
| ], | ||
| ), | ||
| ); | ||
| } | ||
|
|
||
| return Padding( | ||
| padding: const EdgeInsets.all(20.0), | ||
| child: Column( | ||
| mainAxisSize: MainAxisSize.max, | ||
| mainAxisAlignment: MainAxisAlignment.start, | ||
| crossAxisAlignment: CrossAxisAlignment.start, | ||
| children: [ | ||
| if (Globals.game.gameMode == GameMode.lockedMode) | ||
| IconButton.filled( | ||
| onPressed: () => Globals.game.gameMode = GameMode.defaultMode, | ||
| icon: const Icon(Icons.edit), | ||
| style: squareIconButtonStyle, | ||
| ), | ||
| if (Globals.game.gameMode != GameMode.lockedMode) | ||
| Column( | ||
| mainAxisAlignment: MainAxisAlignment.start, | ||
| mainAxisSize: MainAxisSize.min, | ||
| crossAxisAlignment: CrossAxisAlignment.start, | ||
| children: [ | ||
| Row( | ||
| mainAxisAlignment: MainAxisAlignment.start, | ||
| mainAxisSize: MainAxisSize.max, | ||
| crossAxisAlignment: CrossAxisAlignment.center, | ||
| children: [ | ||
| IconButton.filledTonal( | ||
| onPressed: () => | ||
| Globals.game.gameMode = GameMode.lockedMode, | ||
| icon: const Icon(Icons.done), | ||
| style: squareIconButtonStyle, | ||
| ), | ||
| const Spacer(), | ||
| ValueListenableBuilder( | ||
| valueListenable: Globals.game.undoStack.stackSizeNotifier, | ||
| builder: (context, size, child) { | ||
| return IconButton.filled( | ||
| icon: const Icon(Icons.undo), | ||
| onPressed: size == 0 ? null : Globals.game.undo, | ||
| tooltip: "Undo", | ||
| disabledColor: Colors.grey, | ||
| ); | ||
| }, | ||
| ), | ||
| ], | ||
| ), | ||
| const SizedBox(height: 10), | ||
| SegmentedButton<GameMode>( | ||
| segments: [ | ||
| ButtonSegment( | ||
| value: GameMode.defaultMode, | ||
| label: !smallScreen ? const Text("Default") : null, | ||
| icon: const Icon(Icons.mouse), | ||
| tooltip: smallScreen ? "Default Mode" : null, | ||
| ), | ||
| ButtonSegment( | ||
| value: GameMode.addVertex, | ||
| label: !smallScreen ? const Text("Add Vertex") : null, | ||
| icon: const Icon(Icons.add), | ||
| tooltip: smallScreen ? "Add Vertex" : null, | ||
| ), | ||
| ButtonSegment( | ||
| value: GameMode.addEdge, | ||
| label: !smallScreen ? const Text("Add Edge") : null, | ||
| icon: const Icon(Icons.linear_scale), | ||
| tooltip: smallScreen ? "Add Edge" : null, | ||
| ), | ||
| ButtonSegment( | ||
| value: GameMode.deleteComponent, | ||
| label: !smallScreen ? const Text("Delete") : null, | ||
| icon: const Icon(Icons.delete), | ||
| tooltip: smallScreen ? "Delete" : null, | ||
| ), | ||
| ], | ||
| style: SegmentedButton.styleFrom( | ||
| backgroundColor: Theme.of(context).colorScheme.surface, | ||
| foregroundColor: Theme.of(context).colorScheme.primary, | ||
| selectedForegroundColor: | ||
| Theme.of(context).colorScheme.onPrimary, | ||
| selectedBackgroundColor: | ||
| Theme.of(context).colorScheme.primary, | ||
| ), | ||
| showSelectedIcon: false, | ||
| selected: {Globals.game.gameMode}, | ||
| onSelectionChanged: (p0) => Globals.game.gameMode = p0.first, | ||
| ), | ||
| const SizedBox(height: 10), | ||
| if (Globals.game.gameMode == GameMode.addEdge) | ||
| Card( | ||
| margin: EdgeInsets.zero, | ||
| child: Padding( | ||
| padding: const EdgeInsets.symmetric( | ||
| horizontal: 8, | ||
| vertical: 0, | ||
| ), | ||
| child: Row( | ||
| mainAxisSize: MainAxisSize.min, | ||
| mainAxisAlignment: MainAxisAlignment.start, | ||
| children: [ | ||
| Checkbox.adaptive( | ||
| visualDensity: VisualDensity.compact, | ||
| value: Globals.game.addEdgeModeIsDirected, | ||
| onChanged: (value) => setState(() => | ||
| Globals.game.addEdgeModeIsDirected = value!), | ||
| ), | ||
| const Text("Directed"), | ||
| const SizedBox(width: 20), | ||
| Checkbox.adaptive( | ||
| value: Globals.game.addEdgeModeIsWeighted, | ||
| visualDensity: VisualDensity.compact, | ||
| onChanged: (value) => setState(() => | ||
| Globals.game.addEdgeModeIsWeighted = value!), | ||
| ), | ||
| const Text("Weighted"), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| if (Globals.game.gameMode == GameMode.addEdge) | ||
| const SizedBox(height: 10), | ||
| ElevatedButton.icon( | ||
| onPressed: () => Globals.game.clearGraph(), | ||
| label: const Text("Clear Graph"), | ||
| icon: const Icon(Icons.clear), | ||
| ), | ||
| ], | ||
| ), | ||
| const Spacer(), | ||
| Row( | ||
| mainAxisSize: MainAxisSize.max, | ||
| mainAxisAlignment: MainAxisAlignment.start, | ||
| children: [ | ||
| IconButton( | ||
| onPressed: () => Globals.game.centerCamera(), | ||
| icon: const Icon( | ||
| Icons.center_focus_strong, | ||
| color: Colors.white, | ||
| ), | ||
| tooltip: "Center Camera", | ||
| ), | ||
| const Spacer(), | ||
| FloatingActionButton.small( | ||
| tooltip: "Help", | ||
| onPressed: () { | ||
| showDialog( | ||
| context: context, | ||
| builder: (context) => const GameInfoBox(), | ||
| ); | ||
| }, | ||
| child: const Icon(Icons.help), | ||
| ), | ||
| ], | ||
| ), | ||
| ], | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| final squareIconButtonStyle = ButtonStyle( | ||
| shape: WidgetStateProperty.all<RoundedRectangleBorder>( | ||
| RoundedRectangleBorder( | ||
| borderRadius: BorderRadius.circular(10), | ||
| ), | ||
| ), | ||
| ); |
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