/// <summary>
/// Fills the image list with icons according to the selected colors
/// </summary>
protected override void RefreshImageList()
{
if (_style == ImageComboStyle.Common)
{
return;
}
_list.Images.Clear();
int width = _style == ImageComboStyle.PointShape ? 20 : 64;
Size sz = new Size(width, 16);
_list.ImageSize = sz;
int imgHeight = _list.ImageSize.Height;
int imgWidth = _list.ImageSize.Width;
var rect = new Rectangle(PADDING_X, PADDING_Y, imgWidth - 1 - PADDING_X * 2, imgHeight - 1 - PADDING_Y * 2);
var foreColor = Enabled ? Color.Black : Color.Gray;
for (int i = 0; i < _itemCount; i++)
{
var img = new Bitmap(imgWidth, imgHeight, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
var g = Graphics.FromImage(img);
switch (_style)
{
// frame type combo
case ImageComboStyle.FrameType:
{
if (i == 0)
{
g.FillRectangle(new SolidBrush(_color1), rect);
g.DrawRectangle(new Pen(foreColor), rect);
}
else if (i == 1)
{
g.FillEllipse(new SolidBrush(_color1), rect);
g.DrawEllipse(new Pen(foreColor), rect);
}
else if (i == 2)
{
float left = rect.X;
float right = rect.X + rect.Width;
float top = rect.Y;
float bottom = rect.Y + rect.Height;
GraphicsPath path = new GraphicsPath();
path.StartFigure();
path.AddLine(left + (rect.Height / 4), top, right - (rect.Height / 4), top);
path.AddLine(right - (rect.Height / 4), top, right, (top + bottom) / 2);
path.AddLine(right, (top + bottom) / 2, right - (rect.Height / 4), bottom);
path.AddLine(right - (rect.Height / 4), bottom, left + (rect.Height / 4), bottom);
path.AddLine(left + (rect.Height / 4), bottom, left, (top + bottom) / 2);
path.AddLine(left, (top + bottom) / 2, left + (rect.Height / 4), top);
path.CloseFigure();
g.FillPath(new SolidBrush(_color1), path);
g.DrawPath(new Pen(foreColor), path);
path.Dispose();
}
break;
}
// linear gradient combo
case ImageComboStyle.LinearGradient:
{
if ((LinearGradient)i == LinearGradient.None)
{
g.FillRectangle(new SolidBrush(_color1), rect);
g.DrawRectangle(new Pen(_outlineColor), rect);
}
else
{
LinearGradientBrush lgb = new LinearGradientBrush(rect, _color1, _color2, (LinearGradientMode)i);
g.FillRectangle(lgb, rect);
g.DrawRectangle(new Pen(_outlineColor), rect);
lgb.Dispose();
}
break;
}
// line style combo
case ImageComboStyle.LineStyle:
{
var pen = new Pen(_outlineColor)
{
DashStyle = (DashStyle)i, Width = 2
};
g.DrawLine(pen, new Point(rect.Left, rect.Top + rect.Height / 2),
new Point(rect.Right, rect.Top + rect.Height / 2));
break;
}
// line width combo
case ImageComboStyle.LineWidth:
{
var pen = new Pen(_outlineColor)
{
Width = i + 1
};
g.DrawLine(pen, new Point(rect.Left, rect.Top + rect.Height / 2),
new Point(rect.Right, rect.Top + rect.Height / 2));
break;
}
case ImageComboStyle.PointShape:
{
IGeometryStyle sdo = new GeometryStyle();
sdo.Fill.Color = _color1;
sdo.Line.Color = _outlineColor;
var marker = sdo.Marker;
marker.VectorMarker = (VectorMarkerType)i;
marker.Type = MarkerType.Vector;
marker.Size = 12;
if (marker.VectorMarker == VectorMarkerType.Star)
{
marker.VectorSideCount = 5;
marker.Rotation = 17;
marker.Size = 14;
}
else if (marker.VectorMarker == VectorMarkerType.Arrow)
{
marker.Size = 14;
marker.Rotation = 0;
}
else
{
marker.VectorSideCount = 4;
marker.Rotation = 0;
marker.Size = 12;
}
sdo.DrawPoint(g, 0.0f, 0.0f, imgWidth, imgHeight, BackColor);
break;
}
case ImageComboStyle.HatchStyle:
{
HatchBrush br = new HatchBrush((HatchStyle)i, _color1, Color.Transparent);
g.FillRectangle(br, rect);
g.DrawRectangle(new Pen(_outlineColor), rect);
br.Dispose();
break;
}
case ImageComboStyle.HatchStyleWithNone:
{
if (i == 0)
{
g.FillRectangle(new SolidBrush(_color1), rect);
g.DrawRectangle(new Pen(_outlineColor), rect);
}
else
{
HatchBrush br = new HatchBrush((HatchStyle)(i - 1), _color1, Color.Transparent);
g.FillRectangle(br, rect);
g.DrawRectangle(new Pen(_outlineColor), rect);
br.Dispose();
}
break;
}
default: return;
}
_list.Images.Add(img);
}
}
