public static ComlinkProject Load(string filename)
{
using var br = new BinaryReader(File.Open(filename, FileMode.Open));
var magic = Encoding.ASCII.GetString(br.ReadBytes(FileMagic.Length));
if (magic != FileMagic)
{
throw new InvalidDataException();
}
var version = br.ReadInt32();
var flags = (ProjectFileFlags)br.ReadByte();
var numNodes = br.ReadInt32();
var graph = new Graph();
for (var i = 0; i < numNodes; i++)
{
graph.Add(ComlinkNode.Deserialize(br));
}
return(new ComlinkProject(graph, new CommandStack <Graph>(graph)));
}
public CreateNodeCommand(ComlinkNode node)
{
_node = node;
}
public void DrawNode(SKCanvas ctx, ComlinkNode node, bool selected)
{
using var headerTextPaint = _paint.Clone().WithColor(0xFF_FFFFFF).WithTypeface(_headerTypeface);
using var textPaint = _paint.Clone().WithColor(0xFF_FFFFFF).WithTypeface(_nodeTypeface);
var headerLineHeight = (int)(headerTextPaint.FontMetrics.Descent - headerTextPaint.FontMetrics.Ascent + headerTextPaint.FontMetrics.Leading);
var headerBaselineOffset = (int)-headerTextPaint.FontMetrics.Ascent;
var lineHeight = (int)(textPaint.FontMetrics.Descent - textPaint.FontMetrics.Ascent + textPaint.FontMetrics.Leading);
var width = GetNodeWidth(node, headerTextPaint, textPaint);
var numPins = Math.Max(node.InputPins.Count, node.OutputPins.Count);
var height = lineHeight * (numPins - 1) - textPaint.FontMetrics.Ascent + textPaint.FontMetrics.Descent + 6;
var x = node.X;
var y = node.Y;
var headerX = x - NodeBorderSize;
var headerY = y - headerLineHeight;
var headerWidth = width + 2 * NodeBorderSize;
var headerHeight = height + headerLineHeight + NodeBorderSize;
if (selected)
{
var selectionStrokeSize = NodeBorderSize / 2f;
using var paint = _paint.Clone();
using var path = SKPathEffect.CreateDash(SelectionStrokeInterval, (float)((DateTime.Now - DateTime.Today).TotalSeconds * 10 % 20));
paint.IsStroke = true;
paint.Color = new SKColor(SelectionBorderColor);
paint.StrokeWidth = selectionStrokeSize;
paint.PathEffect = path;
ctx.DrawRoundRect(headerX - selectionStrokeSize, headerY - selectionStrokeSize, headerWidth + 2 * selectionStrokeSize, headerHeight + 2 * selectionStrokeSize,
NodeCornerRadius + selectionStrokeSize, NodeCornerRadius + selectionStrokeSize, paint);
}
// header
ctx.DrawRoundRect(headerX, headerY, headerWidth, headerHeight, NodeCornerRadius, NodeCornerRadius, _paint.WithColor(node.Color));
// title
ctx.DrawCircle(x + (headerBaselineOffset - NodeBorderSize + 1) / 2f, y - headerLineHeight / 2f, headerLineHeight / 4f, headerTextPaint);
ctx.DrawText(node.Name, x + headerBaselineOffset, y - headerLineHeight + headerBaselineOffset, headerTextPaint);
// body
ctx.DrawRoundRect(x, y, width, height, NodeCornerRadius - NodeBorderSize + 1, NodeCornerRadius - NodeBorderSize + 1, _paint.WithColor(BodyColor));
y -= (int)(textPaint.FontMetrics.Ascent - 3);
var triangleRadius = lineHeight / 10f;
var circleRadius = lineHeight / 3f;
var pinOffset = lineHeight / 4f;
var pY = y;
for (var i = 0; i < node.InputPins.Count; i++, pY += lineHeight)
{
var pin = node.InputPins[i];
if (pin is FlowInputPin)
{
ctx.DrawRoundedTriangle(x - pinOffset / 2, pY - pinOffset, pinOffset, triangleRadius + NodeBorderSize, _paint.WithColor(BodyColor));
ctx.DrawRoundedTriangle(x - pinOffset / 2, pY - pinOffset, pinOffset, triangleRadius, _paint.WithColor(pin.Color));
}
else
{
// input dot
ctx.DrawCircle(x, pY - pinOffset, circleRadius, _paint.WithColor(BodyColor));
ctx.DrawCircle(x, pY - pinOffset, circleRadius - NodeBorderSize, _paint.WithColor(pin.Color));
}
ctx.DrawText(pin.Name, x + lineHeight / 2f, pY, textPaint);
}
pY = y;
for (var i = 0; i < node.OutputPins.Count; i++, pY += lineHeight)
{
var pin = node.OutputPins[i];
if (pin is FlowOutputPin)
{
ctx.DrawRoundedTriangle(x + width - pinOffset / 2, pY - pinOffset, pinOffset, triangleRadius + NodeBorderSize, _paint.WithColor(BodyColor));
ctx.DrawRoundedTriangle(x + width - pinOffset / 2, pY - pinOffset, pinOffset, triangleRadius, _paint.WithColor(pin.Color));
}
else
{
// output dot
ctx.DrawCircle(x + width, pY - pinOffset, circleRadius, _paint.WithColor(BodyColor));
ctx.DrawCircle(x + width, pY - pinOffset, circleRadius - 3, _paint.WithColor(pin.Color));
}
var textWidth = textPaint.MeasureText(pin.Name);
ctx.DrawText(pin.Name, x + width - textWidth - lineHeight / 2f, pY, textPaint);
}
}
