/// <summary>
/// Constructor
/// </summary>
/// <param name="control">component the editor component</param>
/// <param name="formula">formula the formula for edit</param>
public FormulaEditorPerformer(IControl control, MathFormulaDrawable formula)
{
this.virtualControl = control;
this.formula = formula;
newCursor = formula;
/* keyPressEventHandler = new KeyPressEventHandler(keyPress);
* keyUpEventHandler = new KeyEventHandler(keyUp);
* keySymbol = this;*/
}
/// <summary>
/// Mouse move event handler in move symbol mode
/// </summary>
protected void move()
{
DrawCursor();
if (formulaRectangle.Contains(imagePoint))
{
newCursor = formula.GetInsertedObject(imagePoint);
}
DrawCursor(oldCursor, false, true);
if (oldCursor != newCursor)
{
oldCursor = newCursor;
}
DrawCursor(newCursor, true, true);
}
/// <summary>
/// Sets formula
/// </summary>
/// <param name="str"></param>
/// <param name="sizes"></param>
public void SetFormula(string str, int[] sizes)
{
string s = "";
if (str != null)
{
s = str;
}
MathFormula f = MathFormula.FromString(sizes, s);
MathFormulaDrawable form = new MathFormulaDrawable(f, DrawableConverter.Object);
form.Sizes = sizes;
formula = form;
newCursor = form;
DrawFormula();
}
/// <summary>
/// Gets object to insert
/// </summary>
/// <param name="p">position of the object</param>
/// <returns>The object</returns>
public IInsertedObject GetInsertedObject(Point p)
{
for (int i = 0; i < Count; i++)
{
MathSymbol find = this[i];
IInsertedObject obj = MathSymbolDrawable.GetInsertedObject(find, p);
if (obj != null)
{
return(obj);
}
}
if (endRectangle.Contains(p))
{
return(this);
}
return(null);
}
/// <summary>
/// Sets a new editing formula
/// </summary>
/// <param name="formula">The formula</param>
/// <param name="rectangle">The new rectangle of new formula</param>
public void SetFormula(MathFormulaDrawable formula, Rectangle rectangle)
{
this.formula = formula;
newCursor = this.formula;
Rectangle r = formulaRectangle;
r.X = rectangle.X;
r.Y = rectangle.Y;
r.Width = rectangle.Width;
r.Height = rectangle.Height;
Point p = pointFormula;
p.X = r.X + 20;
p.Y = r.Y + r.Height / 2;
this.formula.Position = p;
this.formula.CalculateFullRelativeRectangle();
this.formula.CalculatePositions();
}
/// <summary>
/// Draws cursor in insert/delete mode
/// </summary>
/// <param name="obj">The selected object</param>
/// <param name="b">The new/old flag</param>
/// <param name="insert">The insert/delete flag</param>
protected void DrawCursor(IInsertedObject obj, bool b, bool insert)
{
if (obj == null)
{
return;
}
Rectangle r;
if (insert)
{
r = obj.InsertedRect;
}
else
{
r = ((IDrawableSymbol)obj).PureDrawable.FullRectangle;
}
Image im;
if (b)
{
im = cursorImage;
}
else
{
im = iBkgnd;
}
Graphics g = virtualControl.Graphics;
Point p = transPoint;
dRect.X = r.X + p.X;
dRect.Y = r.Y + p.Y;
dRect.Width = r.Width;
dRect.Height = r.Height;
sRect.X = r.X;
sRect.Y = r.Y;
sRect.Width = r.Width;
sRect.Height = r.Height;
g.DrawImage(im, dRect, sRect, GraphicsUnit.Pixel);
g.Dispose();
}
