public void DrawArrowsView(LJD.Graphics g, Size viewSize, Action <Rectangle> drawFocusRect) { foreach (var message in eventsHandler.OnDrawArrows()) { if (!message.IsFullyVisible) { continue; } if (message.SelectionState != ArrowSelectionState.NotSelected) { int y = message.Y; int h = message.Height; var r = new Rectangle( 0, y - h + 2, viewSize.Width, h - 2 ); g.FillRectangle(resources.SelectedLineBrush, r); if (message.SelectionState == ArrowSelectionState.FocusedSelectedArrow) { drawFocusRect(r); } } } foreach (var role in eventsHandler.OnDrawRoles()) { var x = role.X; g.DrawLine(resources.RolePen, x, 0, x, viewSize.Height); foreach (var eo in role.ExecutionOccurrences) { LJD.Brush fillBrush; if (eo.DrawMode == ExecutionOccurrenceDrawMode.Normal) { fillBrush = eo.IsHighlighted ? resources.NormalHighlightedExecutionOccurrenceBrush : resources.NormalExecutionOccurrenceBrush; } else if (eo.DrawMode == ExecutionOccurrenceDrawMode.Activity) { fillBrush = eo.IsHighlighted ? resources.ActivityHighlightedExecutionOccurrenceBrush : resources.ActivityExecutionOccurrenceBrush; } else { continue; } g.FillRectangle(fillBrush, eo.Bounds); g.DrawRectangle(eo.IsHighlighted ? resources.HighlightedExecutionOccurrencePen : resources.ExecutionOccurrencePen, eo.Bounds); } } Action <string, LJD.Brush, LJD.Brush, RectangleF> drawTextHelper = (str, back, fore, textRect) => { if (back != null) { var fillSz = g.MeasureString(str, resources.Font, resources.ArrowTextFormat, textRect.Size); var fillRect = new RectangleF(textRect.X, textRect.Y + 4, fillSz.Width, textRect.Height - 5); g.FillRectangle(back, fillRect); } g.DrawString(str, resources.Font, fore, textRect, resources.ArrowTextFormat); }; Action <PointF, bool> drawArrow = (pt, leftToRight) => { var pts = new List <PointF>(4); pts.Add(pt); foreach (var p in resources.ArrowEndShapePoints) { pts.Add(new PointF(pt.X + (leftToRight ? 1f : -1f) * p.X, pt.Y + p.Y)); } g.FillPolygon(resources.NormalArrowTextBrush, pts.ToArray()); }; foreach (var message in eventsHandler.OnDrawArrows()) { int y = message.Y; int x1 = message.FromX; int x2 = message.ToX; int h = message.Height; int w = message.Width; int padding = message.TextPadding; var backBrush = message.SelectionState != ArrowSelectionState.NotSelected ? resources.SelectedLineBrush : resources.ControlBackgroundBrush; var textBrush = message.Color == ArrowColor.Error ? resources.ErrorArrowTextBrush : resources.NormalArrowTextBrush; if (message.Mode == ArrowDrawMode.Arrow || message.Mode == ArrowDrawMode.DottedArrow) { var pen = !message.IsHighlighted ? (message.Mode == ArrowDrawMode.Arrow ? resources.RequestPen : resources.ResponsePen) : (message.Mode == ArrowDrawMode.Arrow ? resources.HighlightedRequestPen : resources.HighlightedResponsePen); if (x1 != x2) { if (message.IsFullyVisible) { drawTextHelper( message.DisplayName, backBrush, textBrush, new RectangleF( Math.Min(x1, x2) + padding, y - h, Math.Abs(x1 - x2) - padding * 2, h ) ); } var nonHorizontal = message.NonHorizontalDrawingData; if (nonHorizontal != null) { g.DrawLines( pen, new[] { new Point(x1, y), new Point(nonHorizontal.VerticalLineX, y), new Point(nonHorizontal.VerticalLineX, nonHorizontal.Y), new Point(nonHorizontal.ToX, nonHorizontal.Y) } ); drawArrow(new PointF(nonHorizontal.ToX, nonHorizontal.Y), x2 > x1); } else { if (message.IsFullyVisible) { g.DrawLine( pen, x1, y, x2, y ); drawArrow(new PointF(x2, y), x2 > x1); } } } else { var midY = y - h / 2; var loopW = 10; var loopH = 10; drawTextHelper( message.DisplayName, backBrush, textBrush, new RectangleF( x1 + loopW + padding, y - h, message.Width - (loopW + padding * 2), h ) ); g.DrawLines( pen, new[] { new Point(x1, midY - loopH / 2), new Point(x1 + loopW, midY - loopH / 2), new Point(x1 + loopW, midY + loopH / 2), new Point(x1, midY + loopH / 2), } ); drawArrow(new PointF(x1, midY + loopH / 2), false); } } else if (message.Mode == ArrowDrawMode.Bookmark) { if (!message.IsFullyVisible) { continue; } float radius = h / 4f; var textRect = new RectangleF( message.MinX - w / 2 + padding, y - h, (message.MaxX - message.MinX + w) - padding * 2, h ); var sz = g.MeasureString("ABC", resources.Font, resources.ArrowTextFormat, textRect.Size).ToSize(); var r = new RectangleF(textRect.X, y - sz.Height - 1, textRect.Width, sz.Height); r.Inflate(radius, 0); g.PushState(); g.EnableAntialiasing(true); g.FillRoundRectangle(resources.BookmarkArrowBackgroundBrush, r, radius); g.DrawRoundRectangle(resources.BookmarkArrowPen, r, radius); g.PopState(); SizeF q = new SizeF(3, 3).Scale(resources.DpiScale); if (x1 - q.Width > r.Left && x1 + q.Width < r.Right) { PointF[] pts; pts = new [] { new PointF(x1 - q.Width, r.Top + r.Height / 2), new PointF(x1 - q.Width, r.Top), new PointF(x1, r.Top - q.Height), new PointF(x1 + q.Width, r.Top), new PointF(x1 + q.Width, r.Top + r.Height / 2), }; g.FillPolygon(resources.BookmarkArrowBackgroundBrush, pts); g.DrawLines(resources.BookmarkArrowPen, pts.Skip(1).Take(3).ToArray()); pts = new [] { new PointF(x1 + q.Width, r.Bottom - r.Height / 2), new PointF(x1 + q.Width, r.Bottom), new PointF(x1, r.Bottom + q.Height), new PointF(x1 - q.Width, r.Bottom), new PointF(x1 - q.Width, r.Bottom - r.Height / 2), }; g.FillPolygon(resources.BookmarkArrowBackgroundBrush, pts); g.DrawLines(resources.BookmarkArrowPen, pts.Skip(1).Take(3).ToArray()); } drawTextHelper( message.DisplayName, null, textBrush, textRect ); } else if (message.Mode == ArrowDrawMode.UserAction || message.Mode == ArrowDrawMode.StateChange || message.Mode == ArrowDrawMode.APICall || message.Mode == ArrowDrawMode.ActivityLabel) { if (!message.IsFullyVisible) { continue; } var icon = message.Mode == ArrowDrawMode.UserAction ? resources.UserActionImage : null; float radius = h / 4f; var r = new RectangleF( x1 - (w - radius), y - h, (w - radius) * 2, h ); var sz = g.MeasureString(message.DisplayName, resources.Font, resources.UserActionTextFormat, r.Size); var szh = sz.Height; var boxRect = new RectangleF( x1 - sz.Width / 2, y - szh - 1, sz.Width, szh ); boxRect.Inflate(radius, 0); g.PushState(); g.EnableAntialiasing(true); LJD.Brush backgroundBrush = null; LJD.Pen strokePen = resources.UserActionFramePen; if (message.Mode == ArrowDrawMode.UserAction || message.Mode == ArrowDrawMode.APICall) { backgroundBrush = resources.UserActionBrush; } else if (message.Mode == ArrowDrawMode.StateChange) { backgroundBrush = resources.StateChangeBrush; } else if (message.Mode == ArrowDrawMode.ActivityLabel) { backgroundBrush = resources.ActivityExecutionOccurrenceBrush; if (message.IsHighlighted) { strokePen = resources.HighlightedExecutionOccurrencePen; } } g.FillRoundRectangle( backgroundBrush, boxRect, radius ); g.DrawRoundRectangle( strokePen, boxRect, radius ); g.PopState(); g.DrawString(message.DisplayName, resources.Font, textBrush, boxRect, resources.UserActionTextFormat); if (icon != null) { var iconsz = icon.GetSize(width: 10f).Scale(resources.DpiScale); g.DrawImage( icon, new RectangleF( (int)(boxRect.Left - iconsz.Width * 1.3f), (int)(boxRect.Y + (boxRect.Height - iconsz.Height) / 2), iconsz.Width, iconsz.Height ) ); } } } }