using System;
using System.Windows.Forms;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Configuration.Assemblies;
using System.Collections;
using System.Drawing;
using System.ComponentModel;
using System.Xml;
using CategoryTheory;
using DiagramUI;
using FormulaEditor;
using FormulaEditorUI;
using FormulaEditorUI.Forms;
using FormulaEditor.Drawing;
namespace DataPerformerUI
{
/// <summary>
/// Panel which draws formula
/// </summary>
public class PanelFormula : Panel
{
private char var;
private Control control;
private Button button;
private string formulaString;
private MathFormulaDrawable formula;
private Rectangle formulaRect;
private Image bkgnd;
private Pen linePen = new Pen(Color.Black);
private Brush bkBrush = new SolidBrush(Color.Gray);
private Brush rBrush = new SolidBrush(Color.FromArgb(216, 203, 187));
private Brush blackBrush = new SolidBrush(Color.Black);
private Font font = new Font("Times", MathSymbolFactory.Sizes[0], FontStyle.Bold | FontStyle.Italic);
private Point pointFormula;
private string variables;
// private string cap;
private string[,] sub;
private string[] symbols;
private static string[] staticSymbols;
private int left;
private string cap;
private bool deriv;
private int center;
private int shift;
/// <summary>
/// Constructor
/// </summary>
/// <param name="cap">Caption</param>
/// <param name="control">Control</param>
/// <param name="width">Width</param>
/// <param name="height">Height</param>
/// <param name="variables">Variable</param>
/// <param name="deriv">The "dertivation" sign</param>
/// <param name="sub">Subscripted symbols</param>
/// <param name="symbols">Symbols</param>
public PanelFormula(string cap, Control control, int width, int height, string variables,
bool deriv, string[,] sub, string[] symbols)
{
if (symbols == null)
{
this.symbols = staticSymbols;
}
else
{
if (symbols[0] != null)
{
this.symbols = symbols;
}
}
this.var = cap[0];
this.sub = sub;
this.cap = cap;
this.deriv = deriv;
this.control = control;
this.variables = variables;
Width = width;
Height = height;
center = height / 2;
shift = -10;
button = new Button();
button.Width = 150;
button.Text = ResourceService.Resources.GetControlResource("Edit", DataPerformerUI.Utils.ControlUtilites.Resources);
button.Left = 20;
button.Top = center - button.Height / 2;
Controls.Add(button);
button.Click += new EventHandler(onClick);
setBkgnd();
Paint += new PaintEventHandler(onPaint);
formulaRect = new Rectangle(left, 5, width - left - 5, height - 10);
center = formulaRect.Top + formulaRect.Height / 2;
pointFormula = new Point(left + 30, center);
}
private void setBkgnd()
{
bkgnd = new Bitmap(Width, Height);
Graphics g = Graphics.FromImage(bkgnd);
left = button.Left + button.Width + 30;
g.FillRectangle(bkBrush, 0, 0, Width, Height);
g.DrawRectangle(linePen, 0, 0, Width - 1, Height - 1);
g.DrawString(cap + " =", font, blackBrush, left, center + shift);
if (deriv)
{
g.DrawString(".", font, blackBrush, left, center + shift - font.Height - 3);
}
int w = (int)g.MeasureString(cap, font).Width;
left += 60 + w;
formulaRect = new Rectangle(left, 5, Width - left - 5, Height - 10);
Formula = formulaString;
}
/// <summary>
/// Edited variable
/// </summary>
public char Variable
{
get
{
return var;
}
}
/// <summary>
/// Edited formula
/// </summary>
public string Formula
{
get
{
return formulaString;
}
set
{
if (value == null)
{
return;
}
formulaString = value;
formula = new MathFormulaDrawable(MathFormula.FromString(MathSymbolFactory.Sizes, value), DrawableConverter.Object);
formula.Position = pointFormula;
formula.CalculateFullRelativeRectangle();
formula.CalculatePositions();
Graphics g = Graphics.FromImage(bkgnd);
g.FillRectangle(rBrush, formulaRect.Left, formulaRect.Top, formulaRect.Width, formulaRect.Height);
g.DrawRectangle(linePen, formulaRect.Left, formulaRect.Top, formulaRect.Width, formulaRect.Height);
formula.Draw(g);
}
}
/// <summary>
/// Symbols
/// </summary>
public static string[] Symbols
{
set
{
staticSymbols = value;
}
}
private static void control_Resize(object sender, EventArgs args)
{
Control cont = sender as Control;
foreach (Control c in cont.Controls)
{
c.Width = cont.Width - 40;
if (c is PanelFormula)
{
PanelFormula p = c as PanelFormula;
p.setBkgnd();
}
c.Refresh();
}
}
/// <summary>
/// Sets resize operation for control
/// </summary>
/// <param name="control">The control</param>
public static void SetResize(Control control)
{
control.Resize += new EventHandler(control_Resize);
}
private void onPaint(object sender, PaintEventArgs e)
{
e.Graphics.DrawImage(bkgnd, 0, 0);
}
private void onClick(object sender, System.EventArgs e)
{
FormulaEditorForm f = new FormulaEditorForm(variables, sub, symbols);
if (formulaString != null)
{
f.Formula = formulaString;
}
Form form = null;
Control c = this;
while (true)
{
if (c is Form)
{
form = c as Form;
break;
}
c = c.Parent;
}
f.ShowDialog(form);
if (!f.Accepted)
{
return;
}
Formula = f.Formula;
Refresh();
}
}
}
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