510 lines
15 KiB
Dart
510 lines
15 KiB
Dart
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import 'package:graphs/src/graph.dart';
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import 'package:graphs/src/curve_painter.dart';
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import 'package:file_picker/file_picker.dart';
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import 'package:flutter/material.dart';
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Graphs getGraph() {
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List<Dot> d = <Dot>[];
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d.add(Dot.fromTwoLists("1", [2], [3]));
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d.add(Dot.fromTwoLists("2", [3], [1]));
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d.add(Dot.fromTwoLists("3", [1], [2]));
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return Graphs.fromList("<EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>", d, true, true);
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}
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class DrawingPage extends StatefulWidget {
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const DrawingPage({Key? key}) : super(key: key);
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@override
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State<StatefulWidget> createState() => _DrawingPageState();
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}
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class _DrawingPageState extends State<DrawingPage> {
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double screenSize = 0;
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Graphs graphData = getGraph();
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List<int?>? intListPath;
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List<bool>? dfsAccessTable;
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//List<int?>? dijkstraTable;
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String op = Operations.none;
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int? startDot;
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int? endDot;
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String? dropdownValue1;
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String? dropdownValue2;
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String currOp = "";
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final _textNameController = TextEditingController();
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final _textLnthController = TextEditingController();
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final _textGrNmController = TextEditingController();
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void clearInputData() {
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setState(() {
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_textLnthController.clear();
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_textNameController.clear();
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dropdownValue1 = null;
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dropdownValue2 = null;
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});
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}
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void clearDropDownVals() {
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setState(() {
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startDot = null;
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intListPath = null;
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dfsAccessTable = null;
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endDot = null;
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currOp = "";
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op = Operations.none;
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});
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}
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// *************buttons*************
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ElevatedButton createButton(String txt, void Function() onPressing) {
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return ElevatedButton(
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onPressed: onPressing,
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style: ButtonStyle(
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backgroundColor: MaterialStateProperty.resolveWith<Color>(
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(states) => Colors.green.shade700)),
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child: Text(txt,
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style: const TextStyle(
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fontSize: 15,
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color: Colors.white70,
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height: 1,
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)),
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);
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}
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void showPopUp(String alertTitle, String err) => showDialog<String>(
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context: context,
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builder: (BuildContext context) => AlertDialog(
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title: Text(alertTitle, style: const TextStyle(fontSize: 26)),
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content: Text(
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err,
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style: const TextStyle(fontSize: 18),
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),
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actions: <Widget>[
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TextButton(
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onPressed: () => Navigator.pop(context, 'OK'),
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child: const Text('OK'),
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),
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],
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),
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);
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// *************buttons*************
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// ***addSpace***
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SizedBox addSpaceH(double h) {
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return SizedBox(height: h);
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}
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SizedBox addSpaceW(double w) {
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return SizedBox(width: w);
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}
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// ***addSpace***
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// *************inputs*************
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Container createInputBox(String text, double width, IconData? icon,
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TextEditingController? controller) {
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if (icon == null) {
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return Container(
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width: width,
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height: 40,
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margin: const EdgeInsets.symmetric(horizontal: 20, vertical: 5),
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child: TextField(
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controller: controller,
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textAlign: TextAlign.center,
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onChanged: (name) => graphData.setName(name),
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decoration: InputDecoration(
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contentPadding:
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const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
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filled: true,
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fillColor: Colors.white,
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//prefixIcon: Icon(icon, color: Colors.black),
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border: const OutlineInputBorder(
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borderRadius: BorderRadius.all(Radius.circular(40))),
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hintStyle: const TextStyle(color: Colors.black38),
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hintText: text),
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));
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}
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return Container(
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width: width,
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height: 40,
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margin: const EdgeInsets.symmetric(horizontal: 20, vertical: 5),
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child: TextField(
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controller: controller,
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textAlign: TextAlign.center,
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decoration: InputDecoration(
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contentPadding:
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const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
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filled: true,
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fillColor: Colors.white,
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prefixIcon: Icon(icon, color: Colors.black),
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border: const OutlineInputBorder(
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borderRadius: BorderRadius.all(Radius.circular(40))),
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hintStyle: const TextStyle(color: Colors.black38),
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hintText: text),
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));
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}
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SizedBox dropList1(double width) {
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var button = DropdownButton(
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hint: const Text(
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'Select dot',
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style: TextStyle(color: Colors.white, fontSize: 13),
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),
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alignment: AlignmentDirectional.bottomEnd,
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value: dropdownValue1,
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isDense: true,
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borderRadius: const BorderRadius.all(Radius.circular(20)),
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dropdownColor: Colors.green.shade800,
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style: const TextStyle(
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color: Colors.white,
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fontSize: 18,
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),
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onChanged: (String? newValue) {
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setState(() {
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dropdownValue1 = newValue;
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});
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},
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items: graphData.getDots().map((location) {
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return DropdownMenuItem(
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child: Text(location.getName()),
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value: location.num.toString(),
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);
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}).toList(),
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);
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return SizedBox(
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child: button,
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width: width,
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);
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}
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SizedBox dropList2(double width) {
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var button = DropdownButton(
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hint: const Text(
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'Select Dot',
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style: TextStyle(color: Colors.white, fontSize: 13),
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),
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alignment: AlignmentDirectional.centerEnd,
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value: dropdownValue2,
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isDense: true,
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borderRadius: const BorderRadius.all(Radius.circular(20)),
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dropdownColor: Colors.green.shade800,
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style: const TextStyle(
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color: Colors.white,
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fontSize: 18,
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),
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onChanged: (String? newValue) {
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setState(() {
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dropdownValue2 = newValue;
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});
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},
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items: graphData.getDots().map((location) {
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return DropdownMenuItem(
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child: Text(location.getName()),
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value: location.num.toString(),
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);
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}).toList(),
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);
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return SizedBox(
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child: button,
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width: width,
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);
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}
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// *************inputs*************
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//*********ButtonsFunctions*********
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void addDotPushed() {
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clearDropDownVals();
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if (_textNameController.text == "") {
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showPopUp("Error", "No name in \"Dot name\" box");
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} else {
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setState(() {
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String? res = graphData.addIsolated(_textNameController.text);
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if (res != null) {
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showPopUp("Error", res);
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}
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});
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}
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clearInputData();
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}
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void addPathPushed() {
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clearDropDownVals();
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if (dropdownValue1 == null) {
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showPopUp("Error", "No dot in first box selected");
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} else if (dropdownValue2 == null) {
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showPopUp("Error", "No dot in second box selected");
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} else if (_textLnthController.text == "" && graphData.getUseLengthBool()) {
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showPopUp("Error", "No length in \"Input length\" box");
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} else {
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int? from = int.parse(dropdownValue1!);
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int? to = int.parse(dropdownValue2!);
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int? len = int.tryParse(_textLnthController.text);
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if (len == null && graphData.getUseLengthBool()) {
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showPopUp("Error",
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"Can't parse input.\nInts only allowed in \"Input length\"");
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} else {
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len ??= 0;
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setState(() {
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String? res = graphData.addPath(from, to, len!);
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if (res != null) showPopUp("Error", res);
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});
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}
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}
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clearInputData();
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}
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void changeOriented() {
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setState(() {
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String? res = graphData.flipUseOrientation();
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if (res != null) showPopUp("Error", res);
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});
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}
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void changeLength() {
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setState(() {
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String? res = graphData.flipUseLength();
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if (res != null) showPopUp("Error", res);
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});
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}
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void delPathPushed() {
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clearDropDownVals();
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if (dropdownValue1 == null) {
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showPopUp("Error", "No dot in first box selected");
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} else if (dropdownValue2 == null) {
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showPopUp("Error", "No dot in second box selected");
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} else {
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int? from = int.tryParse(dropdownValue1!);
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int? to = int.tryParse(dropdownValue2!);
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if (from == null || to == null) {
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showPopUp("Error",
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"Can't parse input.\nInts only allowed in \"Dot number\" and \"Destination number\"");
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} else {
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setState(() {
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String? res = graphData.delPath(from, to);
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if (res != null) {
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showPopUp("Error", res);
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}
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});
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}
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}
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clearInputData();
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}
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void delDotPushed() {
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if (dropdownValue1 != null) {
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setState(() {
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String? res = graphData.delDot(int.parse(dropdownValue1!));
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if (res != null) {
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showPopUp("Error", res);
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}
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});
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} else {
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showPopUp("Error", "Nothing in input");
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}
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clearDropDownVals();
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clearInputData();
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}
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void fileOpener() async {
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FilePickerResult? result =
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await FilePicker.platform.pickFiles(allowedExtensions: ["txt"]);
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if (result != null) {
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if (!result.files.single.path!.endsWith(".txt")) {
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showPopUp("Error", "Can open only \".txt\" files");
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} else {
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setState(() {
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String? res =
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graphData.replaceDataFromFile(result.files.single.path!);
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if (res != null) showPopUp("Error", res);
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});
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}
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} else {
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showPopUp("Error", "No file selected");
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}
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clearDropDownVals();
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clearInputData();
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}
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void fileSaver() async {
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String? outputFile = await FilePicker.platform.saveFile(
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dialogTitle: 'Please select an output file:',
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fileName: 'output-file.txt',
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allowedExtensions: ["txt"]);
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if (outputFile == null) {
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showPopUp("Error", "Save cancelled");
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} else {
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if (!outputFile.endsWith(".txt")) {
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outputFile += ".txt";
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}
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graphData.printToFile(outputFile);
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}
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clearDropDownVals();
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clearInputData();
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}
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void bfsPushed() {
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clearDropDownVals();
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if (dropdownValue1 == null) {
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showPopUp("Error", "No dot in first box selected");
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} else if (dropdownValue2 == null) {
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showPopUp("Error", "No dot in second box selected");
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} else {
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setState(() {
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startDot = int.parse(dropdownValue1!);
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endDot = int.parse(dropdownValue2!);
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currOp = "OP: BFS from $startDot to $endDot";
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op = Operations.bfs;
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intListPath = graphData.bfsPath(startDot!, endDot!);
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});
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if (intListPath == null) {
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showPopUp("Info", "There is no path");
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}
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}
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clearInputData();
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}
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void dfsPushed() {
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clearDropDownVals();
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if (dropdownValue1 == null) {
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showPopUp("Error", "No dot in first box selected");
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} else {
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setState(() {
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startDot = int.parse(dropdownValue1!);
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op = Operations.dfs;
|
|||
|
|
currOp = "OP: DFS from $startDot";
|
|||
|
|
dfsAccessTable = graphData.dfsIterative(startDot!);
|
|||
|
|
});
|
|||
|
|
if (dfsAccessTable == null) {
|
|||
|
|
showPopUp("Err", "report this error.");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
clearInputData();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void dijkstraPushed() {
|
|||
|
|
clearDropDownVals();
|
|||
|
|
if (dropdownValue1 == null) {
|
|||
|
|
showPopUp("Error", "No number in \"Dot number\" box");
|
|||
|
|
} else {
|
|||
|
|
setState(() {
|
|||
|
|
startDot = int.parse(dropdownValue1!);
|
|||
|
|
currOp = "OP: Dijkstra from $startDot";
|
|||
|
|
op = Operations.dijkstra;
|
|||
|
|
intListPath = graphData.dijkstra(startDot!);
|
|||
|
|
});
|
|||
|
|
if (intListPath == null) {
|
|||
|
|
showPopUp("Err", "report this error.");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
clearInputData();
|
|||
|
|
}
|
|||
|
|
//*********ButtonsFunctions*********
|
|||
|
|
|
|||
|
|
// build
|
|||
|
|
@override
|
|||
|
|
Widget build(BuildContext context) {
|
|||
|
|
screenSize = MediaQuery.of(context).size.width;
|
|||
|
|
_textGrNmController.text = graphData.getName();
|
|||
|
|
return MaterialApp(
|
|||
|
|
home: Scaffold(
|
|||
|
|
appBar: AppBar(
|
|||
|
|
title: const Align(
|
|||
|
|
alignment: Alignment.topLeft,
|
|||
|
|
child: Text("Graph name:\n",
|
|||
|
|
style: TextStyle(
|
|||
|
|
fontSize: 18,
|
|||
|
|
color: Colors.white,
|
|||
|
|
))),
|
|||
|
|
toolbarHeight: 110,
|
|||
|
|
flexibleSpace: Container(
|
|||
|
|
color: Colors.green.shade900,
|
|||
|
|
child: Column(children: <Widget>[
|
|||
|
|
const SizedBox(height: 5),
|
|||
|
|
Row(children: [
|
|||
|
|
addSpaceW(screenSize / 8 + 19),
|
|||
|
|
createButton("\nAdd dot\n", addDotPushed),
|
|||
|
|
createInputBox("Dot name", screenSize / 4 - 25, Icons.label,
|
|||
|
|
_textNameController),
|
|||
|
|
addSpaceW(8),
|
|||
|
|
createButton("\nAdd path\n", addPathPushed),
|
|||
|
|
createInputBox("Input length", screenSize / 4 - 25,
|
|||
|
|
Icons.arrow_right_alt_outlined, _textLnthController),
|
|||
|
|
]),
|
|||
|
|
addSpaceH(3),
|
|||
|
|
Row(children: [
|
|||
|
|
addSpaceW(6),
|
|||
|
|
createInputBox(
|
|||
|
|
"Name", screenSize / 8 - 25, null, _textGrNmController),
|
|||
|
|
createButton("\nDel dot \n", delDotPushed),
|
|||
|
|
addSpaceW(54),
|
|||
|
|
dropList1(screenSize / 4 - 80),
|
|||
|
|
addSpaceW(53),
|
|||
|
|
createButton("\nDel path\n", delPathPushed),
|
|||
|
|
addSpaceW(54),
|
|||
|
|
dropList2(screenSize / 4 - 80),
|
|||
|
|
]),
|
|||
|
|
]),
|
|||
|
|
),
|
|||
|
|
actions: [
|
|||
|
|
IconButton(
|
|||
|
|
onPressed: () {
|
|||
|
|
setState(() {
|
|||
|
|
clearDropDownVals();
|
|||
|
|
graphData.flushData();
|
|||
|
|
clearInputData();
|
|||
|
|
});
|
|||
|
|
},
|
|||
|
|
icon: const Icon(Icons.delete_sweep),
|
|||
|
|
iconSize: 60,
|
|||
|
|
),
|
|||
|
|
]),
|
|||
|
|
body: CustomPaint(
|
|||
|
|
painter: CurvePainter(
|
|||
|
|
graphData: graphData,
|
|||
|
|
intListPath: intListPath,
|
|||
|
|
dfsAccessTable: dfsAccessTable,
|
|||
|
|
start: startDot,
|
|||
|
|
end: endDot,
|
|||
|
|
op: op),
|
|||
|
|
child: Align(
|
|||
|
|
alignment: Alignment.topRight,
|
|||
|
|
child: ButtonBar(
|
|||
|
|
mainAxisSize: MainAxisSize.min,
|
|||
|
|
children: <Widget>[
|
|||
|
|
Text(
|
|||
|
|
currOp,
|
|||
|
|
style: const TextStyle(fontSize: 14, color: Colors.black),
|
|||
|
|
),
|
|||
|
|
createButton("Bfs", bfsPushed),
|
|||
|
|
createButton("Dfs", dfsPushed),
|
|||
|
|
createButton("Dijkstra", dijkstraPushed),
|
|||
|
|
createButton("Kruskal", () {
|
|||
|
|
clearDropDownVals();
|
|||
|
|
setState(() {
|
|||
|
|
currOp = "OP: Kruscal algo";
|
|||
|
|
graphData.kruskal();
|
|||
|
|
});
|
|||
|
|
clearInputData();
|
|||
|
|
}),
|
|||
|
|
createButton("Clear OP", () {
|
|||
|
|
clearDropDownVals();
|
|||
|
|
clearInputData();
|
|||
|
|
}),
|
|||
|
|
createButton(graphData.getUseLengthStr(), changeLength),
|
|||
|
|
createButton(graphData.getDoubleSidedStr(), changeOriented),
|
|||
|
|
createButton("Save to file", fileSaver),
|
|||
|
|
createButton("Load from file", fileOpener),
|
|||
|
|
],
|
|||
|
|
),
|
|||
|
|
),
|
|||
|
|
),
|
|||
|
|
));
|
|||
|
|
}
|
|||
|
|
}
|