Initial Commit
This commit is contained in:
Rick Rongen
380
UseCases/Form1.cs
Normal file
380
UseCases/Form1.cs
Normal file
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using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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using Newtonsoft.Json;
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namespace UseCases
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{
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public partial class FrmMain : Form
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{
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[DllImport("kernel32")]
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static extern bool AllocConsole();
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enum AddAction
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{
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Nothing,
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Actor,
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UseCase
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}
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public FrmMain()
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{
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//get the command line arguments
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var args = Environment.GetCommandLineArgs();
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InitializeComponent();
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//check if there are multiple arguments
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if (args.Count() > 1)
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{
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//check if first arguments is a file
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if (File.Exists(args[1]))
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{
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//try to open the file
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OpenFile(args[1]);
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}
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else
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{
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Diagram = new Diagram();
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//initialise default values
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}
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}
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else
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{
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//initialise default values
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Diagram = new Diagram();
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}
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}
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#region variables
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//actors and usecases
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public Diagram Diagram { get; private set; }
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//drawing variables
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private readonly Font _myFont = new Font("Sans Sherif", 20f, FontStyle.Regular);
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private readonly Pen _drawingPen = new Pen(Color.Black, 3f);
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//adding elements
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private AddAction _toAdd = AddAction.Nothing;
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private IDrawable _dragged = null;
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//edit tracker
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private bool _hasEdited = false;
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#endregion
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#region menustrip
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private void exitToolStripMenuItem_Click(object sender, EventArgs e)
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{
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Close();
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}
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private void btAddActor_Click(object sender, EventArgs e)
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{
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_toAdd = AddAction.Actor;
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}
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private void btAddUseCase_Click(object sender, EventArgs e)
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{
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_toAdd = AddAction.UseCase;
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}
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//save in json format
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private void btSave_Click(object sender, EventArgs e)
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{
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//show save file dialog and quit if canceled
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var saveDiag = new SaveFileDialog {Filter = @"*.ucd|*.ucd"};
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if (saveDiag.ShowDialog() != DialogResult.OK) return;
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_hasEdited = false;
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Diagram.Size = Size;
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Diagram.Maximized = WindowState == FormWindowState.Maximized;
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//save to file
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var serialized = JsonConvert.SerializeObject(Diagram, Utils.SerializerSettings);
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File.WriteAllText(saveDiag.FileName, serialized);
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}
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//save png format
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private void btSaveImage_Click(object sender, EventArgs e)
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{
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//show save file dialog and quit if canceled
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var saveDiag = new SaveFileDialog {Filter = @"*.png|*.png"};
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if (saveDiag.ShowDialog() != DialogResult.OK) return;
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//create bitmap and draw usecases and actors to it
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var bmp = new Bitmap(Size.Width, Size.Height);
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var g = Graphics.FromImage(bmp);
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DrawElements(g);
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//save image to file
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bmp.Save(saveDiag.FileName);
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}
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//open json format
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private void btOpen_Click(object sender, EventArgs e)
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{
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//check if anything has been edited
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if (_hasEdited)
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{
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if (
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MessageBox.Show(@"Are you sure you want to load a new file?", @"Load new file",
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MessageBoxButtons.YesNo) == DialogResult.No)
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return;
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}
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//show open file dialog and quit if canceled
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var openDiag = new OpenFileDialog {Filter = @"*.ucd|*ucd"};
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if (openDiag.ShowDialog() != DialogResult.OK) return;
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//open the file
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OpenFile(openDiag.FileName);
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Refresh();
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}
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private void clearToolStripMenuItem_Click(object sender, EventArgs e)
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{
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//check if user realy wants to clear the diagram else return
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if (MessageBox.Show(@"Are you sure you want to clear the diagram?", @"Clear", MessageBoxButtons.YesNo) !=
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DialogResult.Yes) return;
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//clear lists and refresh screen
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Diagram = new Diagram(new Size(430, 372));
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// _actors.Clear();
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// _useCases.Clear();
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WindowState = FormWindowState.Normal;
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Size = Diagram.Size;
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Refresh();
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}
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private void controlsToolStripMenuItem_Click(object sender, EventArgs e)
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{
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MessageBox.Show(@"Pres Ctrl+A or click Add>Actor to add an Actor
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Press Ctrl+U or click File>Use Case to add a Use Case
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Click somwhere on screen to add Use Case or Actor at that position
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Leave name empty to remove
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Click and drag to move usecase or actor
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Press Ctrl+S or click File>Save to save the diagram
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Press Ctrl+Shift+S or click File>Save as image to save diagram as image
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Click File>Clear to clear the diagram
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Press Alt+F4 or click the cross or click File>Exit to close the form
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Click Help>Controls to view this message
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Click Help>About to view information about the application", @"Controls");
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}
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private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
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{
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MessageBox.Show(@"Use Case Designer by Rick Rongen
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Version 1.0
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Developed by order of Fontys Hogerescholen ICT Eindhoven", @"About");
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}
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#endregion
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#region functions
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/// <summary>
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/// Opens an file into form and shows error if it could not be loaded
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/// </summary>
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/// <param name="filename">full path of ile to load</param>
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private void OpenFile(string filename)
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{
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//try to open file
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try
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{
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Diagram = JsonConvert.DeserializeObject<Diagram>(File.ReadAllText(filename), Utils.SerializerSettings);
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WindowState = Diagram.Maximized ? FormWindowState.Maximized : FormWindowState.Normal;
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Size = Diagram.Size;
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Refresh();
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}
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catch (JsonException jex)
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{
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//show the console with the error if the user wan't to see it
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if (
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MessageBox.Show(
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$@"Error while loading {filename}\n
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Invallid format or broken data\nGeeks may check console for the exception, pres yes to show console",
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@"Error occured, show console?", MessageBoxButtons.YesNo) == DialogResult.Yes) AllocConsole();
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Console.WriteLine(jex.ToString());
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}
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catch (IOException ioex)
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{
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//show the console with the error if the user wan't to see it
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if (
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MessageBox.Show(
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$@"Error while loading {filename}\nCouldn't open the file or there was an encoding issue.",
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@"Error occured, show console?", MessageBoxButtons.YesNo) == DialogResult.Yes) AllocConsole();
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Console.WriteLine(ioex.ToString());
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}
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finally
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{
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_hasEdited = false;
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}
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}
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/// <summary>
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/// Draws all ellements in actors and useCases to the graphics object
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/// </summary>
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/// <param name="g">graphics object</param>
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private void DrawElements(Graphics g)
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{
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g.SmoothingMode = SmoothingMode.AntiAlias;
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foreach (var drawable in Diagram.Drawable)
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{
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drawable.Draw(g, _myFont, _drawingPen);
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}
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}
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#endregion
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#region mouse
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//handle creation of components
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private void frmMain_Click(object sender, EventArgs e)
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{
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var pos = PointToClient(MousePosition);
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switch (_toAdd)
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{
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case AddAction.Actor:
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//create new actor
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var adiag = new EditActor();
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if (adiag.ShowDialog() == DialogResult.OK && adiag.ActorName != "")
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{
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Diagram.Actors.Add(new Actor(adiag.ActorName, pos));
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}
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Refresh();
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break;
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case AddAction.UseCase:
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//create new useCase
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var udiag = new editUseCase(Diagram.Actors) {UseCase = new UseCase(), CasePos = pos};
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if (udiag.ShowDialog() == DialogResult.OK && udiag.UseCase.Name != "")
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{
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Diagram.UseCases.Add(udiag.UseCase);
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udiag.UseCase.Actors.ForEach(Console.WriteLine);
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}
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Refresh();
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break;
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default:
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case AddAction.Nothing:
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break;
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}
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_toAdd = AddAction.Nothing;
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if (Diagram.UseCases.Any() || Diagram.Actors.Any()) _hasEdited = true;
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}
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//handle editing of components
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private void frmMain_DoubleClick(object sender, EventArgs e)
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{
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var mousepos = PointToClient(MousePosition);
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var closest = GetClosestDrawable(mousepos);
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switch (closest)
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{
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case null:
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return;
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case Actor actor:
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var edAcDiag = new EditActor(actor.Name);
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if (edAcDiag.ShowDialog() == DialogResult.OK)
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{
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if (edAcDiag.ActorName == "")
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{
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//remove actor if name is equal to ""
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Diagram.Actors.Remove(actor);
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foreach (var usecase in Diagram.UseCases)
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{
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//remove this actor from all refering usecases
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usecase.Actors.Remove(actor);
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}
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}
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else
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{
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//update name
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actor.Name = edAcDiag.ActorName;
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}
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}
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break;
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case UseCase useCase:
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var edUcDiag = new editUseCase(Diagram.Actors)
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{
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UseCase = useCase,
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CasePos = useCase.Position
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};
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if (edUcDiag.ShowDialog() == DialogResult.OK)
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{
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if (edUcDiag.UseCase.Name == "")
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{
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//remove usecase if name is equal to ""
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Diagram.UseCases.Remove(useCase);
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}
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}
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break;
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}
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Refresh();
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}
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//move usecase or actor
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private void frmMain_MouseUp(object sender, MouseEventArgs e)
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{
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if (e.Button == MouseButtons.Left && _toAdd == AddAction.Nothing)
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{
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_dragged = null;
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}
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}
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private void frmMain_MouseDown(object sender, MouseEventArgs e)
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{
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//quit if not left mousebutton or adding item
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if (e.Button != MouseButtons.Left || _toAdd != AddAction.Nothing) return;
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//get mouse position in client
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var mousepos = PointToClient(MousePosition);
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var closest = GetClosestDrawable(mousepos);
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if (closest == null)
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return;
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_dragged = closest;
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}
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private void frmMain_MouseMove(object sender, MouseEventArgs e)
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{
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if (_dragged == null) return;
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_dragged.Position = PointToClient(MousePosition);
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Refresh();
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}
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private IDrawable GetClosestDrawable(Point position, double maxDistance = 30d)
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{
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if (!Diagram.UseCases.Any() && !Diagram.Actors.Any())
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return null; // No items to check
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var comm = Diagram.Drawable.Select(org => new
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{
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original = org,
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distance = Math.Sqrt(Math.Pow(org.Position.X - position.X, 2) +
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Math.Pow(org.Position.Y - position.Y, 2))
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}).Aggregate((a1, a2) => a1.distance < a2.distance ? a1 : a2);
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return comm.distance > maxDistance ? null : comm.original;
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}
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#endregion
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private void frmMain_Paint(object sender, PaintEventArgs e)
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{
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//draw actors, use cases and lines
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DrawElements(e.Graphics);
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}
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private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)
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{
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if (!_hasEdited) return;
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if (MessageBox.Show(@"Are you sure you want to exit?", @"exit", MessageBoxButtons.YesNo) !=
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DialogResult.Yes)
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e.Cancel = true;
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}
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}
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}
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