From 3025ab70f5fc51819f5980908a8a98d5d6426b7e Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jean-Philippe=20Bruy=C3=A8re?= <jp_bruyere@hotmail.com>
Date: Sat, 26 Aug 2017 18:55:27 +0200
Subject: [PATCH] add corner radius to 3d effect on border

---
 src/GraphicObjects/Border.cs | 91 +++++++++++++++++++++++++++---------
 1 file changed, 68 insertions(+), 23 deletions(-)

diff --git a/src/GraphicObjects/Border.cs b/src/GraphicObjects/Border.cs
index 375d7321..1e502e9a 100644
--- a/src/GraphicObjects/Border.cs
+++ b/src/GraphicObjects/Border.cs
@@ -119,34 +119,79 @@ namespace Crow
 			CairoHelpers.CairoRectangle(gr, rBack, CornerRadius);
 			gr.Fill ();
 
-			if (BorderWidth > 0) {				
-				Foreground.SetAsSource (gr, rBack);
-				CairoHelpers.CairoRectangle(gr, rBack, CornerRadius, BorderWidth);
-			}
-
-			if (BorderStyle != BorderStyle.Normal) {
+			if (BorderStyle == BorderStyle.Normal) {
+				if (BorderWidth > 0) {
+					Foreground.SetAsSource (gr, rBack);
+					CairoHelpers.CairoRectangle(gr, rBack, CornerRadius, BorderWidth);
+				}
+			}else{
 				gr.LineWidth = 1.0;
-				gr.SetSourceColor (sunkenColor);
-				gr.MoveTo (0.5 + rBack.Left, rBack.Bottom);
-				gr.LineTo (0.5 + rBack.Left, 0.5 + rBack.Y);
-				gr.LineTo (rBack.Right, 0.5 + rBack.Y);
-				if (BorderStyle == BorderStyle.Raised) {
-					gr.MoveTo (-1.5 + rBack.Right, 2.0 + rBack.Y);
-					gr.LineTo (-1.5 + rBack.Right, -1.5 + rBack.Bottom);
-					gr.LineTo (2.0 + rBack.Left, -1.5 + rBack.Bottom);
+				if (CornerRadius > 0.0) {
+					double radius = CornerRadius;
+					if ((radius > rBack.Height / 2.0) || (radius > rBack.Width / 2.0))
+						radius = Math.Min(rBack.Height / 2.0, rBack.Width / 2.0);
+					gr.SetSourceColor (sunkenColor);
+					gr.MoveTo(0.5 + rBack.Left, -0.5 + rBack.Bottom - radius);
+					gr.ArcNegative   (0.5 + rBack.Left + radius, -0.5 + rBack.Bottom - radius, radius, Math.PI, Math.PI * 0.75);
+					gr.MoveTo(0.5 + rBack.Left, -0.5 + rBack.Bottom - radius);
+					gr.LineTo(0.5 + rBack.Left, 0.5 + rBack.Top + radius);
+					gr.Arc   (0.5 + rBack.Left + radius, 0.5 + rBack.Top + radius, radius, Math.PI , Math.PI*1.5);
+					gr.LineTo(-0.5 + rBack.Right - radius, 0.5 + rBack.Top);
+					gr.Arc   (-0.5 + rBack.Right - radius, 0.5 + rBack.Top + radius, radius, Math.PI*1.5 , Math.PI*1.75);
+					gr.Stroke();
+					if (BorderStyle == BorderStyle.Raised) {
+						gr.MoveTo (-1.5 + rBack.Right , 1.5 + rBack.Top + radius);
+						gr.ArcNegative (-0.5 + rBack.Right - radius, 0.5 + rBack.Top + radius, radius-1.0, 0, -Math.PI * 0.25);
+						gr.MoveTo (-1.5 + rBack.Right , 1.5 + rBack.Top + radius);
+						gr.LineTo (-1.5 + rBack.Right , -1.5 + rBack.Bottom - radius);
+						gr.Arc (-0.5 + rBack.Right -radius, -0.5 + rBack.Bottom - radius, radius-1.0, 0, Math.PI /2.0);
+						gr.LineTo (1.5 + rBack.Left + radius, -1.5 + rBack.Bottom);
+						gr.Arc (0.5 + rBack.Left + radius, -0.5 + rBack.Bottom - radius, radius-1.0, Math.PI / 2.0, Math.PI*0.75 );
+						gr.Stroke ();
+
+						gr.SetSourceColor (raiseColor);
+						gr.MoveTo (1.5 + rBack.Left, -1.5 + rBack.Bottom - radius);
+						gr.ArcNegative (0.5 + rBack.Left + radius, -0.5 + rBack.Bottom - radius, radius - 1.0, Math.PI, Math.PI * 0.75);
+						gr.MoveTo (1.5 + rBack.Left, -1.5 + rBack.Bottom - radius);
+						gr.LineTo (1.5 + rBack.Left, 1.5 + rBack.Top + radius);
+						gr.Arc (0.5 + rBack.Left + radius, 0.5 + rBack.Top + radius, radius - 1.0, Math.PI, Math.PI * 1.5);
+						gr.LineTo (-1.5 + rBack.Right - radius, 1.5 + rBack.Top);
+						gr.Arc (-0.5 + rBack.Right - radius, 0.5 + rBack.Top + radius, radius - 1.0, Math.PI * 1.5, Math.PI * 1.75);
+					} else {
+						gr.Stroke ();
+						gr.SetSourceColor (raiseColor);
+					}
+					gr.MoveTo (-0.5 + rBack.Right , 0.5 + rBack.Top + radius);
+					gr.ArcNegative (-0.5 + rBack.Right - radius, 0.5 + rBack.Top + radius, radius, 0, -Math.PI * 0.25);
+					gr.MoveTo (-0.5 + rBack.Right , 0.5 + rBack.Top + radius);
+					gr.LineTo (-0.5 + rBack.Right , -0.5 + rBack.Bottom - radius);
+					gr.Arc (-0.5 + rBack.Right -radius, -0.5 + rBack.Bottom - radius, radius, 0, Math.PI /2.0);
+					gr.LineTo (0.5 + rBack.Left + radius, -0.5 + rBack.Bottom);
+					gr.Arc (0.5 + rBack.Left + radius, -0.5 + rBack.Bottom - radius, radius, Math.PI / 2.0, Math.PI*0.75 );
 					gr.Stroke ();
-					gr.SetSourceColor (raiseColor);
-					gr.MoveTo (1.5 + rBack.Left, -1.0 + rBack.Bottom);
-					gr.LineTo (1.5 + rBack.Left, 1.5 + rBack.Y);
-					gr.LineTo (rBack.Right, 1.5 + rBack.Y);
 				} else {
+					gr.SetSourceColor (sunkenColor);
+					gr.MoveTo (0.5 + rBack.Left, rBack.Bottom);
+					gr.LineTo (0.5 + rBack.Left, 0.5 + rBack.Y);
+					gr.LineTo (rBack.Right, 0.5 + rBack.Y);
+					if (BorderStyle == BorderStyle.Raised) {
+						gr.MoveTo (-1.5 + rBack.Right, 2.0 + rBack.Y);
+						gr.LineTo (-1.5 + rBack.Right, -1.5 + rBack.Bottom);
+						gr.LineTo (2.0 + rBack.Left, -1.5 + rBack.Bottom);
+						gr.Stroke ();
+						gr.SetSourceColor (raiseColor);
+						gr.MoveTo (1.5 + rBack.Left, -1.0 + rBack.Bottom);
+						gr.LineTo (1.5 + rBack.Left, 1.5 + rBack.Y);
+						gr.LineTo (rBack.Right, 1.5 + rBack.Y);
+					} else {
+						gr.Stroke ();
+						gr.SetSourceColor (raiseColor);
+					}
+					gr.MoveTo (-0.5 + rBack.Right, 1.5 + rBack.Y);
+					gr.LineTo (-0.5 + rBack.Right, -0.5 + rBack.Bottom);
+					gr.LineTo (1.0 + rBack.Left, -0.5 + rBack.Bottom);
 					gr.Stroke ();
-					gr.SetSourceColor (raiseColor);
 				}
-				gr.MoveTo (-0.5 + rBack.Right, 1.5 + rBack.Y);
-				gr.LineTo (-0.5 + rBack.Right, -0.5 + rBack.Bottom);
-				gr.LineTo (1.0 + rBack.Left, -0.5 + rBack.Bottom);
-				gr.Stroke ();
 			}
 
 			gr.Save ();
-- 
2.47.3