public virtual DrawingShape GetShape(CanvasEventArgs canvasEventArgs, TikzStyle style)
{
if (canvasEventArgs.MouseState == MouseState.DOWN)
{
dummy = new DrawingShape(new TikzLine(new Shapes.ArrowLine(), null), ShapeState.START);
previousMousePos = canvasEventArgs.Point;
}
else
{
Point mousePos = canvasEventArgs.Point;
Vector delta = mousePos - previousMousePos;
previousMousePos = mousePos;
foreach (TikzShape s in shapes)
{
Canvas.SetLeft(s.Shape, Canvas.GetLeft(s.Shape) + delta.X);
Canvas.SetTop(s.Shape, Canvas.GetTop(s.Shape) + delta.Y);
}
if (canvasEventArgs.MouseState == MouseState.UP)
{
dummy.ShapeState = ShapeState.FINISHED;
}
else if (canvasEventArgs.MouseState == MouseState.MOVE)
{
dummy.ShapeState = ShapeState.DRAWING;
}
}
dummy.RemoveOnFinish = true;
return(dummy);
}
public static List <TikzShape> Parse(string data)
{
MatchCollection matches = svgRegexes[0].Matches(data);
List <TikzShape> result = new List <TikzShape>();
foreach (Match m in matches)
{
string line = m.Value;
string d = svgRegexes[1].Match(line).Groups[1].Value;
System.Windows.Shapes.Path p = new System.Windows.Shapes.Path
{
Data = Geometry.Parse(d)
};
//Parse style
string rawStrokeColor = GetSVGProperty(line, "stroke");
string rawFillColor = GetSVGProperty(line, "fill");
string rawStrokeWidth = GetSVGProperty(line, "stroke-width");
string rawStrokeDasharray = GetSVGProperty(line, "stroke-dasharray");
string rawStrokeOpacity = GetSVGProperty(line, "stroke-opacity");
string rawFillOpacity = GetSVGProperty(line, "fill-opacity");
double strokeOpacity = double.TryParse(rawStrokeOpacity, out double o) ? o : 1.0;
double fillOpacity = double.TryParse(rawFillOpacity, out double of) ? of : 1.0;
TikzStyle s = new TikzStyle(parseSVGColor(rawStrokeColor, strokeOpacity),
parseSVGColor(rawFillColor, fillOpacity), LineEnding.NONE, praseSVGStrokeWidth(rawStrokeWidth), parseSVGDashArray(rawStrokeDasharray));
p.SetStyle(s);
result.Add(new TikzPath(p, s, line));
}
return(result);
}
public virtual DrawingShape GetShape(CanvasEventArgs canvasEventArgs, TikzStyle style)
{
if (canvasEventArgs.MouseState == MouseState.DOWN)
{
Rectangle rect = new Rectangle();
rect.SetStyle(TikzStyle.SelectionStyle);
current = new DrawingShape(new TikzRectangle(rect, null), ShapeState.START);
current.RemoveOnFinish = true;
firstPoint = canvasEventArgs.Point;
}
else
{
current.TikzShape.Shape.Width = Math.Abs(firstPoint.X - canvasEventArgs.Point.X);
current.TikzShape.Shape.Height = Math.Abs(firstPoint.Y - canvasEventArgs.Point.Y);
current.TikzShape.Shape.Margin = new Thickness(Math.Min(firstPoint.X, canvasEventArgs.Point.X), Math.Min(firstPoint.Y, canvasEventArgs.Point.Y), 0, 0);
if (canvasEventArgs.MouseState == MouseState.UP)
{
current.ShapeState = ShapeState.FINISHED;
}
else if (canvasEventArgs.MouseState == MouseState.MOVE)
{
current.ShapeState = ShapeState.DRAWING;
}
}
return(current);
}
public TikzPath(Path path, TikzStyle style, string rawData) : base(path, style)
{
this.path = path;
this.rawData = rawData;
pathData = SVGParser.GetSVGProperty(rawData, "d");
Canvas.SetLeft(this.path, 0);
Canvas.SetTop(this.path, 0);
}
public DrawingShape GetShape(CanvasEventArgs canvasEventArgs, TikzStyle style)
{
if (canvasEventArgs.MouseState == MouseState.DOWN)
{
Ellipse ellipse = new Ellipse
{
StrokeThickness = style.LineWidth.GetLineWidth(),
};
ellipse.SetStyle(style);
current = new DrawingShape(new TikzEllipse(ellipse, style), ShapeState.START);
firstPoint = canvasEventArgs.Point;
}
else
{
double x = Math.Min(canvasEventArgs.Point.X, firstPoint.X);
double y = Math.Min(canvasEventArgs.Point.Y, firstPoint.Y);
double w = Math.Max(canvasEventArgs.Point.X, firstPoint.X) - x;
double h = Math.Max(canvasEventArgs.Point.Y, firstPoint.Y) - y;
if (canvasEventArgs.ModKey)
{
if (canvasEventArgs.Point.X > firstPoint.X)
{
w = h;
}
else if (canvasEventArgs.Point.Y > firstPoint.Y)
{
h = w;
}
else
{
double b = Math.Min(firstPoint.X - canvasEventArgs.Point.X, firstPoint.Y - canvasEventArgs.Point.Y);
w = b;
h = b;
x = firstPoint.X - b;
y = firstPoint.Y - b;
}
}
Canvas.SetLeft(current.TikzShape.Shape, x);
Canvas.SetTop(current.TikzShape.Shape, y);
current.TikzShape.Shape.Width = w;
current.TikzShape.Shape.Height = h;
if (canvasEventArgs.MouseState == MouseState.UP)
{
current.ShapeState = ShapeState.FINISHED;
}
else if (canvasEventArgs.MouseState == MouseState.MOVE)
{
current.ShapeState = ShapeState.DRAWING;
}
}
return(current);
}
public static void SetStyle(this Shape s, TikzStyle style)
{
s.Stroke = new SolidColorBrush(style.StrokeColor);
s.Fill = new SolidColorBrush(style.FillColor);
s.StrokeThickness = style.LineWidth.GetLineWidth();
s.StrokeDashArray = style.LineType.GetDashArray();
s.StrokeStartLineCap = style.LineEnding.GetLineCaps()[0];
s.StrokeEndLineCap = style.LineEnding.GetLineCaps()[1];
s.StrokeDashCap = style.LineEnding.GetLineCaps()[2];
}
public virtual DrawingShape GetShape(CanvasEventArgs canvasEventArgs, TikzStyle style)
{
if (canvasEventArgs.MouseState == MouseState.DOWN)
{
Rectangle rect = new Rectangle();
rect.SetStyle(style);
current = new DrawingShape(new TikzRectangle(rect, style), ShapeState.START);
firstPoint = canvasEventArgs.Point;
}
else
{
double x = Math.Min(canvasEventArgs.Point.X, firstPoint.X);
double y = Math.Min(canvasEventArgs.Point.Y, firstPoint.Y);
double w = Math.Max(canvasEventArgs.Point.X, firstPoint.X) - x;
double h = Math.Max(canvasEventArgs.Point.Y, firstPoint.Y) - y;
if (canvasEventArgs.ModKey)
{
if (canvasEventArgs.Point.X > firstPoint.X)
{
w = h;
}
else if (canvasEventArgs.Point.Y > firstPoint.Y)
{
h = w;
}
else
{
double b = Math.Min(firstPoint.X - canvasEventArgs.Point.X, firstPoint.Y - canvasEventArgs.Point.Y);
w = b;
h = b;
x = firstPoint.X - b;
y = firstPoint.Y - b;
}
}
Canvas.SetLeft(current.TikzShape.Shape, x);
Canvas.SetTop(current.TikzShape.Shape, y);
current.TikzShape.Shape.Width = w;
current.TikzShape.Shape.Height = h;
if (canvasEventArgs.MouseState == MouseState.UP)
{
current.ShapeState = ShapeState.FINISHED;
}
else if (canvasEventArgs.MouseState == MouseState.MOVE)
{
current.ShapeState = ShapeState.DRAWING;
}
}
return(current);
}
public DrawingShape GetShape(CanvasEventArgs canvasEventArgs, TikzStyle style)
{
if (canvasEventArgs.MouseState == MouseState.DOWN)
{
firstPoint = canvasEventArgs.Point;
ArrowLine line = new ArrowLine
{
X1 = firstPoint.X,
X2 = firstPoint.X,
Y1 = firstPoint.Y,
Y2 = firstPoint.Y,
};
line.SetStyle(style);
current = new DrawingShape(new TikzLine(line, style), ShapeState.START);
}
else
{
if (current.TikzShape.Shape is not ArrowLine l)
{
throw new Exception("Shape-Tool type mismatch, tool type: LineTool, expected shape type Line");
}
l.X2 = canvasEventArgs.Point.X;
l.Y2 = canvasEventArgs.Point.Y;
if (canvasEventArgs.ModKey)
{
//Snap mode, from start to one of axis contraints
//Axis constraints are divided by 45deg angles
//Get angle between start point and mouse pointer
//origin Axis X
double angle = Math.Atan2(l.Y2 - l.Y1, l.X2 - l.X1); //rads
//Determine constraint axis based on angle between X axis and current line
//22.5 -> pi/8
//X AXIS -> 0
//45 -> PI/4
//90 -> PI/2
//135 -> PI/2 + PI/4 = 3PI/4
//180 -> PI
//180 -> -PI
//225 -> -3PI/4
//270 -> -PI/2
//360 -> 0
double snapAngle = Math.Ceiling(angle / (Math.PI / 8.0)) * (Math.PI / 8.0);
//calculate new points based on snapAngle
double maxDim = Math.Max(Math.Abs(l.X2 - l.X1), Math.Abs(l.Y2 - l.Y1));
l.X2 = l.X1 + Math.Cos(snapAngle) * maxDim;
l.Y2 = l.Y1 + Math.Sin(snapAngle) * maxDim;
}
if (canvasEventArgs.MouseState == MouseState.UP)
{
current.ShapeState = ShapeState.FINISHED;
Canvas.SetLeft(l, 0);
Canvas.SetTop(l, 0);
}
else if (canvasEventArgs.MouseState == MouseState.MOVE)
{
current.ShapeState = ShapeState.DRAWING;
}
}
return(current);
}
public TikzEllipse(Ellipse ellipse, TikzStyle tikzStyle) : base(ellipse, tikzStyle)
{
}
public TikzLine(ArrowLine line, TikzStyle tikzStyle) : base(line, tikzStyle)
{
}
public TikzBezier(ArrowPath path, TikzStyle tikzStyle) : base(path, tikzStyle)
{
}
public TikzRectangle(Rectangle rectangle, TikzStyle tikzStyle) : base(rectangle, tikzStyle)
{
}
protected TikzShape(Shape shape, TikzStyle tikzStyle)
{
Shape = shape;
TikzStyle = tikzStyle;
}
public virtual DrawingShape GetShape(CanvasEventArgs canvasEventArgs, TikzStyle style)
{
return(null);
}
public DrawingShape GetShape(CanvasEventArgs a, TikzStyle style)
{
if (click == 0) // first click, draw a straight line
{
if (a.MouseState == MouseState.DOWN)
{
//FIXME: small bug here, sometimes when a user clicks for the first time long line appears for a split second, noticeable but should not influence performance
firstPoint = a.Point;
bezier = new BezierSegment()
{
Point3 = a.Point.GetSystemPoint()
};
figure = new PathFigure();
figure.Segments.Add(bezier);
path = new ArrowPath();
path.SetStyle(style);
path.Margin = ShapeUtils.GetMargin(firstPoint.X, firstPoint.Y);
pf = new PathFigure[] { figure };
path.Data = new PathGeometry(pf);
current = new DrawingShape(
new TikzBezier(path, style),
ShapeState.START
);
}
else if (a.MouseState == MouseState.MOVE)
{
bezier.Point3 = GetPointWithoutMargin(firstPoint, a.Point);
}
else
{
bezier.Point3 = GetPointWithoutMargin(firstPoint, a.Point);
click++;
}
return(current);
}
else if (click == 1) // second click, select first control point
{
if (a.MouseState == MouseState.DOWN)
{
secondPointSelected = true;
bezier.Point1 = GetPointWithoutMargin(firstPoint, a.Point);
}
else if (a.MouseState == MouseState.MOVE)
{
if (secondPointSelected)
{
bezier.Point1 = GetPointWithoutMargin(firstPoint, a.Point);
}
}
else
{
bezier.Point1 = GetPointWithoutMargin(firstPoint, a.Point);
click++;
}
return(current);
}
else if (click == 2) // third click, select second control point
{
if (a.MouseState == MouseState.DOWN)
{
thirdPointSelected = true;
bezier.Point2 = GetPointWithoutMargin(firstPoint, a.Point);
}
else if (a.MouseState == MouseState.MOVE)
{
if (thirdPointSelected)
{
bezier.Point2 = GetPointWithoutMargin(firstPoint, a.Point);
}
}
else
{
bezier.Point2 = GetPointWithoutMargin(firstPoint, a.Point);
current.ShapeState = ShapeState.FINISHED;
click = 0;
secondPointSelected = thirdPointSelected = false;
}
Canvas.SetLeft(current.TikzShape.Shape, 0);
Canvas.SetTop(current.TikzShape.Shape, 0);
return(current);
}
else
{
throw new Exception("Sth went wrong, bezier line should be drawn in 3 clicks");
}
}
public LocalShapeData(string toolName, List <CanvasEventArgs> keyPoints, TikzStyle style)
{
ToolName = toolName;
KeyPoints = keyPoints;
Style = style;
}
private void RebuildStyle()
{
CurrentStyle = new TikzStyle(StrokeColor, FillColor, LineEnding, LineWidth, LineType);
}
