private void canvas_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
_selectedFigure = null;
for (int i = 0; i < _figures.Count; i++)
{
Figure fig = _figures.getAt(i);
if (fig.ptInRegion(e.X, e.Y))
{
_selectedFigure = fig;
break;
}
}
if (_selectedFigure != null)
{
_selectedFigure.popup(canvas, e.Location);
}
else
{
mainPopup.popup(canvas, e.Location);
}
}
else
{
_selectedFigure = null;
for (int i = 0; i < _figures.Count; i++)
{
Figure fig = _figures.getAt(i);
if (fig.ptInRegion(e.X, e.Y))
{
_selectedFigure = fig;
break;
}
}
if (_selectedFigure != null)
{
_figures.removeFigure(_selectedFigure);
_currentX = e.X;
_currentY = e.Y;
_actionMode = MOVING;
canvas.Invalidate();
return;
}
Graphics g = canvas.CreateGraphics();
Pen aPen = new Pen(Color.Black, 2);
if (whatToDraw == DRAW_RECT)
{
_selectedFigure = new Box(canvas, e.X, e.Y, e.X, e.Y);
_selectedFigure.setPopup(boxPopup);
}
else if (whatToDraw == DRAW_LINE)
{
_selectedFigure = new Line(canvas, e.X, e.Y, e.X, e.Y);
_selectedFigure.setPopup(linePopup);
}
else if (whatToDraw == DRAW_CIRCLE)
{
_selectedFigure = new Circle(canvas, e.X, e.Y, e.X, e.Y);
_selectedFigure.setPopup(circlePopup);
}
else if (whatToDraw == DRAW_POINT)
{
_selectedFigure = new Point(canvas, e.X, e.Y);
_selectedFigure.setPopup(pointPopup);
}
_selectedFigure.draw(g);
bMousePressed = true;
_actionMode = DRAWING;
}
}
public void popup(PictureBox canvas, System.Drawing.Point pos)
{
_popup.popup(canvas, pos);
}