private void DrawArrowsFromChildToParentCommits(Graphics graphics)
{
using (Pen arrowPen = new Pen(Color.Blue, 1))
{
AdjustableArrowCap arrowCap = new AdjustableArrowCap(4, 4);
arrowPen.SetLineCap(System.Drawing.Drawing2D.LineCap.RoundAnchor, System.Drawing.Drawing2D.LineCap.Custom, System.Drawing.Drawing2D.DashCap.Flat);
arrowPen.CustomEndCap = arrowCap;
foreach (var sprite in spritesByCommitHash.Values)
{
var commit = sprite.Revision;
foreach (string parentHash in commit.ParentHashes)
{
if (Plotter.HasPlottedCommit(parentHash) && Plotter.HasPlottedCommit(commit.Hash))
{
var parentSprite = spritesByCommitHash[parentHash];
float fadeInAlpha = Math.Min(parentSprite.Opacity.Value, spritesByCommitHash[commit.Hash].Opacity.Value);
arrowPen.Color = Color.FromArgb((int)(fadeInAlpha * 255), Color.Blue);
Point location = this.GetSpriteDrawingCoordinates(sprite);
Point parentLocation = this.GetSpriteDrawingCoordinates(parentSprite);
Point leftSideOfParent = new Point(parentLocation.X - circleSize / 2, parentLocation.Y);
Point rightSideOfChild = new Point(location.X + circleSize / 2, location.Y);
Point rightSideOfParent = new Point(parentLocation.X + circleSize / 2, parentLocation.Y);
Point leftSideOfChild = new Point(location.X - circleSize / 2, location.Y);
graphics.DrawLine(arrowPen, leftSideOfChild, rightSideOfParent);
}
}
}
}
}
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
if (DesignMode)
{
return;
}
pe.Graphics.SmoothingMode = SmoothingMode.HighQuality;
DrawBackground(pe.Graphics);
foreach (var sprite in spritesByCommitHash.Values)
{
var commit = sprite.Revision;
if (!Plotter.HasPlottedCommit(commit.Hash))
{
continue;
}
Point location = GetSpriteDrawingCoordinates(sprite);
Rectangle commitBounds = new Rectangle(new Point(location.X - cellWidth / 2, location.Y - cellHeight / 2), new Size(cellWidth, cellHeight));
if (pe.ClipRectangle.IntersectsWith(commitBounds))
{
Point circleUpperLeft = new Point(location.X - circleSize / 2, location.Y - circleSize / 2);
Rectangle circleBounds = new Rectangle(circleUpperLeft, new Size(circleSize, circleSize));
DrawCommitCircle(pe.Graphics, sprite, circleBounds);
int lineSpacing = 4;
int yPosition = location.Y + circleSize / 2 + lineSpacing;
string shortCommitHash = commit.Hash.Substring(0, 8);
SizeF stringSize = pe.Graphics.MeasureString(shortCommitHash, this.Font);
pe.Graphics.DrawString(shortCommitHash, this.Font, Brushes.Black, new Point(location.X - (int)stringSize.Width / 2, yPosition));
yPosition += (int)Math.Ceiling(stringSize.Height);
const int labelMaxLength = 13;
if (listOfRefsByCommitHash.ContainsKey(commit.Hash))
{
foreach (GitReference reference in listOfRefsByCommitHash[commit.Hash])
{
if (!ShowRemoteHeads && reference.Type == GitReferenceType.Remote)
{
continue;
}
string branchName = reference.ShortName;
if (branchName.Length > labelMaxLength)
{
branchName = "..." + branchName.Substring(branchName.Length - labelMaxLength, labelMaxLength);
}
Brush refBrush;
switch (reference.Type)
{
case GitReferenceType.Head:
refBrush = Brushes.Blue;
break;
case GitReferenceType.Remote:
refBrush = Brushes.Maroon;
break;
case GitReferenceType.Stash:
refBrush = Brushes.Purple;
break;
case GitReferenceType.Tag:
refBrush = Brushes.DarkGreen;
break;
default:
refBrush = Brushes.Black;
break;
}
stringSize = pe.Graphics.MeasureString(branchName, fontForGitRefs);
var style = FontStyle.Regular;
if (CurrentBranch == reference.ShortName && reference.Type == GitReferenceType.Head)
{
style = FontStyle.Underline;
}
using (Font font = new Font(fontForGitRefs, style))
{
pe.Graphics.DrawString(branchName, font, refBrush, new Point(location.X - (int)stringSize.Width / 2, yPosition));
}
yPosition += (int)Math.Ceiling(stringSize.Height);
}
}
}
}
DrawArrowsFromChildToParentCommits(pe.Graphics);
}