public override void Rewind(uint idx)
{
m_idx = idx;
switch (idx)
{
default:
case 0: // Background
m_vertex = 0;
m_vx[0] = m_Bounds.Left - m_border_extra;
m_vy[0] = m_Bounds.Bottom - m_border_extra;
m_vx[1] = m_Bounds.Right + m_border_extra;
m_vy[1] = m_Bounds.Bottom - m_border_extra;
m_vx[2] = m_Bounds.Right + m_border_extra;
m_vy[2] = m_Bounds.Top + m_border_extra;
m_vx[3] = m_Bounds.Left - m_border_extra;
m_vy[3] = m_Bounds.Top + m_border_extra;
break;
case 1: // Triangle
m_vertex = 0;
if (m_descending)
{
m_vx[0] = m_Bounds.Left;
m_vy[0] = m_Bounds.Bottom;
m_vx[1] = m_Bounds.Right;
m_vy[1] = m_Bounds.Bottom;
m_vx[2] = m_Bounds.Left;
m_vy[2] = m_Bounds.Top;
m_vx[3] = m_Bounds.Left;
m_vy[3] = m_Bounds.Bottom;
}
else
{
m_vx[0] = m_Bounds.Left;
m_vy[0] = m_Bounds.Bottom;
m_vx[1] = m_Bounds.Right;
m_vy[1] = m_Bounds.Bottom;
m_vx[2] = m_Bounds.Right;
m_vy[2] = m_Bounds.Top;
m_vx[3] = m_Bounds.Left;
m_vy[3] = m_Bounds.Bottom;
}
break;
case 2:
m_text.Text = m_label;
if (m_label.Length > 0)
{
string buf;
buf = string.Format(m_label, Value());
m_text.Text = buf;
}
m_text.StartPoint(m_Bounds.Left, m_Bounds.Bottom);
m_text.SetFontSize((m_Bounds.Top - m_Bounds.Bottom) * 1.2);
m_text_poly.Width(m_text_thickness);
m_text_poly.LineJoin(MathStroke.ELineJoin.round_join);
m_text_poly.LineCap(MathStroke.ELineCap.round_cap);
m_text_poly.Rewind(0);
break;
case 3: // pointer preview
m_ellipse.Init(m_xs1 + (m_xs2 - m_xs1) * m_preview_value,
(m_ys1 + m_ys2) / 2.0,
m_Bounds.Top - m_Bounds.Bottom,
m_Bounds.Top - m_Bounds.Bottom,
32);
break;
case 4: // pointer
NormalizeValue(false);
m_ellipse.Init(m_xs1 + (m_xs2 - m_xs1) * m_value,
(m_ys1 + m_ys2) / 2.0,
m_Bounds.Top - m_Bounds.Bottom,
m_Bounds.Top - m_Bounds.Bottom,
32);
m_ellipse.Rewind(0);
break;
case 5:
m_storage.RemoveAll();
if (m_num_steps != 0)
{
uint i;
double d = (m_xs2 - m_xs1) / m_num_steps;
if (d > 0.004)
{
d = 0.004;
}
for (i = 0; i < m_num_steps + 1; i++)
{
double x = m_xs1 + (m_xs2 - m_xs1) * i / m_num_steps;
m_storage.move_to(x, m_Bounds.Bottom);
m_storage.line_to(x - d * (m_Bounds.Right - m_Bounds.Left), m_Bounds.Bottom - m_border_extra);
m_storage.line_to(x + d * (m_Bounds.Right - m_Bounds.Left), m_Bounds.Bottom - m_border_extra);
}
}
break;
}
}
