/// <summary>
/// Draw border at specified position.
/// </summary>
/// <param name="g">Instance for graphics object.</param>
/// <param name="x">X coordinate of start point.</param>
/// <param name="y">Y coordinate of start point.</param>
/// <param name="x2">X coordinate of end point.</param>
/// <param name="y2">Y coordinate of end point.</param>
/// <param name="style">Style flag of border.</param>
/// <param name="color">Color of border.</param>
/// <param name="bgPen">Fill pen used when drawing double outline.</param>
public void DrawLine(PlatformGraphics g, RGFloat x, RGFloat y, RGFloat x2, RGFloat y2, BorderLineStyle style,
SolidColor color, RGPen bgPen = null)
{
if (style == BorderLineStyle.None)
{
return;
}
#if WINFORM || WPF || ANDROID
#if WINFORM
RGPen p = pens[(byte)style];
lock (p)
{
p.Color = color;
p.StartCap = System.Drawing.Drawing2D.LineCap.Square;
p.EndCap = System.Drawing.Drawing2D.LineCap.Square;
g.DrawLine(p, new RGPointF(x, y), new RGPointF(x2, y2));
}
#elif WPF
// get template pen from cache list
var tp = pens[(byte)style];
// create new WPF pen
var p = new RGPen(new RGSolidBrush(color), tp.Thickness);
// copy the pen style from template
p.DashStyle = tp.DashStyle;
p.StartLineCap = System.Windows.Media.PenLineCap.Square;
p.EndLineCap = System.Windows.Media.PenLineCap.Square;
System.Windows.Media.GuidelineSet gs = new System.Windows.Media.GuidelineSet();
double halfPenWidth = p.Thickness / 2;
gs.GuidelinesX.Add(x + halfPenWidth);
gs.GuidelinesY.Add(y + halfPenWidth);
gs.GuidelinesX.Add(x2 + halfPenWidth);
gs.GuidelinesY.Add(y2 + halfPenWidth);
g.PushGuidelineSet(gs);
g.DrawLine(p, new RGPointF(x, y), new RGPointF(x2, y2));
#elif ANDROID
g.DrawLine(x, y, x2, y2, p);
#endif
if (style == BorderLineStyle.DoubleLine && bgPen != null)
{
lock (bgPen)
{
#if WINFORM || WPF
g.DrawLine(bgPen, new RGPointF(x, y), new RGPointF(x2, y2));
#elif ANDROID
g.DrawLine(x, y, x2, y2, bgPen);
#endif // WPF
}
}
#if WPF
g.Pop();
#endif // WPF
//#endif // WINFORM || WPF || ANDROID
#elif iOS
using (var path = new CGPath())
{
path.AddLines(new CGPoint[] { new CGPoint(x, y), new CGPoint(x2, y2) });
switch (style)
{
default:
case BorderLineStyle.Solid:
g.AddPath(path);
g.SetStrokeColor(color);
g.DrawPath(CGPathDrawingMode.Stroke);
break;
}
}
#endif // iOS
}