/// <summary>
/// Gets the <see cref="GraphicsPath"/> for this element.
/// </summary>
public override GraphicsPath Path(ISvgRenderer renderer)
{
if (_path == null || IsPathDirty)
{
var halfStrokeWidth = base.StrokeWidth / 2;
// If it is to render, don't need to consider stroke
if (renderer != null)
{
halfStrokeWidth = 0;
this.IsPathDirty = false;
}
// If the corners aren't to be rounded just create a rectangle
if (CornerRadiusX.Value == 0.0f && CornerRadiusY.Value == 0.0f)
{
var loc_y = Location.Y.ToDeviceValue(renderer, UnitRenderingType.Vertical, this);
var loc_x = Location.X.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
// Starting location which take consideration of stroke width
SvgPoint strokedLocation = new SvgPoint(loc_x - halfStrokeWidth, loc_y - halfStrokeWidth);
var width = this.Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this) + halfStrokeWidth * 2;
var height = this.Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, this) + halfStrokeWidth * 2;
var rectangle = new RectangleF(strokedLocation.ToDeviceValue(renderer, this), new SizeF(width, height));
_path = new GraphicsPath();
_path.StartFigure();
_path.AddRectangle(rectangle);
_path.CloseFigure();
}
else
{
_path = new GraphicsPath();
var arcBounds = new RectangleF();
var lineStart = new PointF();
var lineEnd = new PointF();
var width = Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
var height = Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, this);
var rx = Math.Min(CornerRadiusX.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this) * 2, width);
var ry = Math.Min(CornerRadiusY.ToDeviceValue(renderer, UnitRenderingType.Vertical, this) * 2, height);
var location = Location.ToDeviceValue(renderer, this);
// Start
_path.StartFigure();
// Add first arc
arcBounds.Location = location;
arcBounds.Width = rx;
arcBounds.Height = ry;
_path.AddArc(arcBounds, 180, 90);
// Add first line
lineStart.X = Math.Min(location.X + rx, location.X + width * 0.5f);
lineStart.Y = location.Y;
lineEnd.X = Math.Max(location.X + width - rx, location.X + width * 0.5f);
lineEnd.Y = lineStart.Y;
_path.AddLine(lineStart, lineEnd);
// Add second arc
arcBounds.Location = new PointF(location.X + width - rx, location.Y);
_path.AddArc(arcBounds, 270, 90);
// Add second line
lineStart.X = location.X + width;
lineStart.Y = Math.Min(location.Y + ry, location.Y + height * 0.5f);
lineEnd.X = lineStart.X;
lineEnd.Y = Math.Max(location.Y + height - ry, location.Y + height * 0.5f);
_path.AddLine(lineStart, lineEnd);
// Add third arc
arcBounds.Location = new PointF(location.X + width - rx, location.Y + height - ry);
_path.AddArc(arcBounds, 0, 90);
// Add third line
lineStart.X = Math.Max(location.X + width - rx, location.X + width * 0.5f);
lineStart.Y = location.Y + height;
lineEnd.X = Math.Min(location.X + rx, location.X + width * 0.5f);
lineEnd.Y = lineStart.Y;
_path.AddLine(lineStart, lineEnd);
// Add third arc
arcBounds.Location = new PointF(location.X, location.Y + height - ry);
_path.AddArc(arcBounds, 90, 90);
// Add fourth line
lineStart.X = location.X;
lineStart.Y = Math.Max(location.Y + height - ry, location.Y + height * 0.5f);
lineEnd.X = lineStart.X;
lineEnd.Y = Math.Min(location.Y + ry, location.Y + height * 0.5f);
_path.AddLine(lineStart, lineEnd);
// Close
_path.CloseFigure();
}
}
return(_path);
}
/// <summary>
/// Gets the <see cref="GraphicsPath"/> for this element.
/// </summary>
public override GraphicsPath Path(ISvgRenderer renderer)
{
if (_path == null || IsPathDirty)
{
var halfStrokeWidth = base.StrokeWidth / 2;
// If it is to render, don't need to consider stroke
if (renderer != null)
{
halfStrokeWidth = 0;
this.IsPathDirty = false;
}
// If the corners aren't to be rounded just create a rectangle
if (renderer == null || (CornerRadiusX.Value == 0.0f && CornerRadiusY.Value == 0.0f))
{
var loc_y = Location.Y.ToDeviceValue(renderer, UnitRenderingType.Vertical, this);
var loc_x = Location.X.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
// Starting location which take consideration of stroke width
SvgPoint strokedLocation = new SvgPoint(loc_x - halfStrokeWidth, loc_y - halfStrokeWidth);
var width = this.Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this) + halfStrokeWidth * 2;
var height = this.Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, this) + halfStrokeWidth * 2;
var location = strokedLocation.ToDeviceValue(renderer, this);
var size = new Vector2(width, height);
_path = new GraphicsPath();
_path.StartFigure();
_path.AddElement(new RectangleElement(location, size));
_path.CloseFigure();
}
else
{
_path = new GraphicsPath();
var lineStart = new Vector2();
var lineEnd = new Vector2();
var width = Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
var height = Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, this);
var rx = Math.Min(CornerRadiusX.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this) * 2, width);
var ry = Math.Min(CornerRadiusY.ToDeviceValue(renderer, UnitRenderingType.Vertical, this) * 2, height);
var location = Location.ToDeviceValue(renderer, this);
// Start
_path.StartFigure();
var lines = new List <LineElement>();
var corners = new List <Vector2>();
// Add first line
lineStart.X = Math.Min(location.X + rx, location.X + width * 0.5f);
lineStart.Y = location.Y;
lineEnd.X = Math.Max(location.X + width - rx, location.X + width * 0.5f);
lineEnd.Y = lineStart.Y;
lines.Add(new LineElement(lineStart, lineEnd));
corners.Add(location);
// Add second line
lineStart.X = location.X + width;
lineStart.Y = Math.Min(location.Y + ry, location.Y + height * 0.5f);
lineEnd.X = lineStart.X;
lineEnd.Y = Math.Max(location.Y + height - ry, location.Y + height * 0.5f);
lines.Add(new LineElement(lineStart, lineEnd));
corners.Add(new Vector2(location.X + width, location.Y));
// Add third line
lineStart.X = Math.Max(location.X + width - rx, location.X + width * 0.5f);
lineStart.Y = location.Y + height;
lineEnd.X = Math.Min(location.X + rx, location.X + width * 0.5f);
lineEnd.Y = lineStart.Y;
lines.Add(new LineElement(lineStart, lineEnd));
corners.Add(new Vector2(location.X + width, location.Y + height));
// Add fourth line
lineStart.X = location.X;
lineStart.Y = Math.Max(location.Y + height - ry, location.Y + height * 0.5f);
lineEnd.X = lineStart.X;
lineEnd.Y = Math.Min(location.Y + ry, location.Y + height * 0.5f);
lines.Add(new LineElement(lineStart, lineEnd));
corners.Add(new Vector2(location.X, location.Y + height));
_path.AddElement(lines[0]);
_path.AddElement(lines[1]);
_path.AddElement(lines[2]);
_path.AddElement(lines[3]);
addCorner(_path, lines[3].End, corners[0], lines[0].Start, rx, ry);
addCorner(_path, lines[0].End, corners[1], lines[1].Start, rx, ry);
addCorner(_path, lines[1].End, corners[2], lines[2].Start, rx, ry);
addCorner(_path, lines[2].End, corners[3], lines[3].Start, rx, ry);
// Close
_path.CloseFigure();
}
}
return(_path);
}
