private void CPDrawCheckBoxInternal (Graphics dc, Rectangle rectangle, ButtonState state, bool mixed)
{
Pen check_pen = (mixed) ? Pens.Gray : Pens.Black;
Rectangle cb_rect = new Rectangle (rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
if ((state & ButtonState.All) == ButtonState.All) {
cb_rect.Width -= 2;
cb_rect.Height -= 2;
dc.FillRectangle (SystemBrushes.Control, cb_rect.X, cb_rect.Y, cb_rect.Width - 1, cb_rect.Height - 1);
dc.DrawRectangle (SystemPens.ControlDark, cb_rect.X, cb_rect.Y, cb_rect.Width - 1, cb_rect.Height - 1);
check_pen = SystemPens.ControlDark;
} else
if ((state & ButtonState.Flat) == ButtonState.Flat) {
cb_rect.Width -= 2;
cb_rect.Height -= 2;
if ((state & ButtonState.Inactive) == ButtonState.Inactive)
dc.FillRectangle (SystemBrushes.ControlLight, cb_rect.X, cb_rect.Y, cb_rect.Width - 1, cb_rect.Height - 1);
else
dc.FillRectangle (Brushes.White, cb_rect.X, cb_rect.Y, cb_rect.Width - 1, cb_rect.Height - 1);
dc.DrawRectangle (SystemPens.ControlDark, cb_rect.X, cb_rect.Y, cb_rect.Width - 1, cb_rect.Height - 1);
} else {
cb_rect.Width -= 1;
cb_rect.Height -= 1;
int check_box_visible_size = (cb_rect.Height > cb_rect.Width) ? cb_rect.Width : cb_rect.Height;
int x_pos = Math.Max (0, cb_rect.X + (cb_rect.Width / 2) - check_box_visible_size / 2);
int y_pos = Math.Max (0, cb_rect.Y + (cb_rect.Height / 2) - check_box_visible_size / 2);
Rectangle rect = new Rectangle (x_pos, y_pos, check_box_visible_size, check_box_visible_size);
if (((state & ButtonState.Pushed) == ButtonState.Pushed) || ((state & ButtonState.Inactive) == ButtonState.Inactive)) {
dc.FillRectangle (ResPool.GetHatchBrush (HatchStyle.Percent50,
Color.FromArgb (Clamp (ColorControl.R + 3, 0, 255),
ColorControl.G, ColorControl.B),
ColorControl), rect.X + 2, rect.Y + 2, rect.Width - 3, rect.Height - 3);
} else
dc.FillRectangle (SystemBrushes.ControlLightLight, rect.X + 2, rect.Y + 2, rect.Width - 3, rect.Height - 3);
Pen pen = SystemPens.ControlDark;
dc.DrawLine (pen, rect.X, rect.Y, rect.X, rect.Bottom - 1);
dc.DrawLine (pen, rect.X + 1, rect.Y, rect.Right - 1, rect.Y);
pen = SystemPens.ControlDarkDark;
dc.DrawLine (pen, rect.X + 1, rect.Y + 1, rect.X + 1, rect.Bottom - 2);
dc.DrawLine (pen, rect.X + 2, rect.Y + 1, rect.Right - 2, rect.Y + 1);
pen = SystemPens.ControlLightLight;
dc.DrawLine (pen, rect.Right, rect.Y, rect.Right, rect.Bottom);
dc.DrawLine (pen, rect.X, rect.Bottom, rect.Right, rect.Bottom);
// oh boy, matching ms is like fighting against windmills
using (Pen h_pen = new Pen (ResPool.GetHatchBrush (HatchStyle.Percent50,
Color.FromArgb (Clamp (ColorControl.R + 3, 0, 255),
ColorControl.G, ColorControl.B), ColorControl))) {
dc.DrawLine (h_pen, rect.X + 1, rect.Bottom - 1, rect.Right - 1, rect.Bottom - 1);
dc.DrawLine (h_pen, rect.Right - 1, rect.Y + 1, rect.Right - 1, rect.Bottom - 1);
}
if ((state & ButtonState.Inactive) == ButtonState.Inactive)
check_pen = SystemPens.ControlDark;
}
if ((state & ButtonState.Checked) == ButtonState.Checked) {
int check_size = (cb_rect.Height > cb_rect.Width) ? cb_rect.Width / 2: cb_rect.Height / 2;
if (check_size < 7) {
int lineWidth = Math.Max (3, check_size / 3);
int Scale = Math.Max (1, check_size / 9);
Rectangle rect = new Rectangle (cb_rect.X + (cb_rect.Width / 2) - (int)Math.Ceiling ((float)check_size / 2) - 1, cb_rect.Y + (cb_rect.Height / 2) - (check_size / 2) - 1,
check_size, check_size);
for (int i = 0; i < lineWidth; i++) {
dc.DrawLine (check_pen, rect.Left + lineWidth / 2, rect.Top + lineWidth + i, rect.Left + lineWidth / 2 + 2 * Scale, rect.Top + lineWidth + 2 * Scale + i);
dc.DrawLine (check_pen, rect.Left + lineWidth / 2 + 2 * Scale, rect.Top + lineWidth + 2 * Scale + i, rect.Left + lineWidth / 2 + 6 * Scale, rect.Top + lineWidth - 2 * Scale + i);
}
} else {
int lineWidth = Math.Max (3, check_size / 3) + 1;
int x_half = cb_rect.Width / 2;
int y_half = cb_rect.Height / 2;
Rectangle rect = new Rectangle (cb_rect.X + x_half - (check_size / 2) - 1, cb_rect.Y + y_half - (check_size / 2),
check_size, check_size);
int gradient_left = check_size / 3;
int gradient_right = check_size - gradient_left - 1;
for (int i = 0; i < lineWidth; i++) {
dc.DrawLine (check_pen, rect.X, rect.Bottom - 1 - gradient_left - i, rect.X + gradient_left, rect.Bottom - 1 - i);
dc.DrawLine (check_pen, rect.X + gradient_left, rect.Bottom - 1 - i, rect.Right - 1, rect.Bottom - i - 1 - gradient_right);
}
}
}
}
