public void DrawLineString(LineString lineString, LineStyle lineStyle, PointStyle vertexStyle, bool fast)
{
LineString viewLineString = (LineString)Viewport.GetViewGeometry(lineString);
AM.PolylineGeometry geometry = new AM.PolylineGeometry(
viewLineString.Coordinates.Select(c => new A.Point(c.X, c.Y)), false);
m_Context.DrawGeometry(null, GetPen(lineStyle), geometry);
DrawCoordinates(viewLineString.Coordinates, vertexStyle, fast);
}
private static void DrawEllipseInternal(AM.DrawingContext dc, AM.IBrush brush, AM.Pen pen, bool isStroked, bool isFilled, ref Rect2 rect)
{
if (!isFilled && !isStroked)
{
return;
}
var r = new A.Rect(rect.X, rect.Y, rect.Width, rect.Height);
var g = new AM.EllipseGeometry(r);
dc.DrawGeometry(
isFilled ? brush : null,
isStroked ? pen : null,
g);
}
public void TransformLine(TextView textView, DrawingContext drawingContext, VisualLine line)
{
if (markers == null)
{
return;
}
var markersInLine = markers.FindOverlappingSegments(line);
foreach (var marker in markersInLine)
{
if (marker.EndOffset < textView.TextDocument.TextLength)
{
foreach (var r in VisualLineGeometryBuilder.GetRectsForSegment(textView, marker))
{
var startPoint = r.BottomLeft;
var endPoint = r.BottomRight;
var usedPen = new Pen(new SolidColorBrush(marker.MarkerColor), 1);
const double offset = 2.5;
var count = Math.Max((int) ((endPoint.X - startPoint.X)/offset) + 1, 4);
var geometry = new StreamGeometry();
using (var ctx = geometry.Open())
{
ctx.BeginFigure(startPoint, false);
foreach (var point in CreatePoints(startPoint, endPoint, offset, count))
{
ctx.LineTo(point);
}
ctx.EndFigure(false);
}
drawingContext.DrawGeometry(Brushes.Transparent, usedPen, geometry);
break;
}
}
}
}
private static void DrawLineCurveInternal(AM.DrawingContext _dc, AM.Pen pen, bool isStroked, ref A.Point pt1, ref A.Point pt2, double curvature, CurveOrientation orientation, PointAlignment pt1a, PointAlignment pt2a)
{
if (isStroked)
{
var sg = new AM.StreamGeometry();
using (var sgc = sg.Open())
{
sgc.BeginFigure(new A.Point(pt1.X, pt1.Y), false);
double p1x = pt1.X;
double p1y = pt1.Y;
double p2x = pt2.X;
double p2y = pt2.Y;
LineShapeExtensions.GetCurvedLineBezierControlPoints(orientation, curvature, pt1a, pt2a, ref p1x, ref p1y, ref p2x, ref p2y);
sgc.CubicBezierTo(
new A.Point(p1x, p1y),
new A.Point(p2x, p2y),
new A.Point(pt2.X, pt2.Y));
sgc.EndFigure(false);
}
_dc.DrawGeometry(null, pen, sg);
}
}
private void Draw(AM.DrawingContext context, DrawCommand command, Stack <Stack <IDisposable> > pushedStates)
{
switch (command)
{
case GeometryClipDrawCommand geometryClipDrawCommand:
{
var geometryPushedState = context.PushGeometryClip(geometryClipDrawCommand.Clip);
var currentPushedStates = pushedStates.Peek();
currentPushedStates.Push(geometryPushedState);
}
break;
case ClipDrawCommand clipDrawCommand:
{
var clipPushedState = context.PushClip(clipDrawCommand.Clip);
var currentPushedStates = pushedStates.Peek();
currentPushedStates.Push(clipPushedState);
}
break;
case SaveDrawCommand _:
{
pushedStates.Push(new Stack <IDisposable>());
}
break;
case RestoreDrawCommand _:
{
var currentPushedStates = pushedStates.Pop();
while (currentPushedStates.Count > 0)
{
var pushedState = currentPushedStates.Pop();
pushedState.Dispose();
}
}
break;
case SetTransformDrawCommand setTransformDrawCommand:
{
var transformPreTransform = context.PushSetTransform(setTransformDrawCommand.Matrix);
var currentPushedStates = pushedStates.Peek();
currentPushedStates.Push(transformPreTransform);
}
break;
case SaveLayerDrawCommand saveLayerDrawCommand:
{
pushedStates.Push(new Stack <IDisposable>());
}
break;
case ImageDrawCommand imageDrawCommand:
{
context.DrawImage(
imageDrawCommand.Source,
imageDrawCommand.SourceRect,
imageDrawCommand.DestRect,
imageDrawCommand.BitmapInterpolationMode);
}
break;
case GeometryDrawCommand geometryDrawCommand:
{
context.DrawGeometry(
geometryDrawCommand.Brush,
geometryDrawCommand.Pen,
geometryDrawCommand.Geometry);
}
break;
case LineDrawCommand lineDrawCommand:
{
context.DrawLine(
lineDrawCommand.Pen,
lineDrawCommand.P1,
lineDrawCommand.P2);
}
break;
case RectangleDrawCommand rectangleDrawCommand:
{
context.DrawRectangle(
rectangleDrawCommand.Brush,
rectangleDrawCommand.Pen,
rectangleDrawCommand.Rect,
rectangleDrawCommand.RadiusX,
rectangleDrawCommand.RadiusY);
}
break;
case TextDrawCommand textDrawCommand:
{
context.DrawText(
textDrawCommand.Brush,
textDrawCommand.Origin,
textDrawCommand.FormattedText);
}
break;
}
}
private void DrawSpiroShape(DrawingContext dc, SpiroShape shape, bool isSelected)
{
string data;
var result = SpiroEditor.Data.TryGetValue(shape, out data);
if (result && !string.IsNullOrEmpty(data))
{
var geometry = StreamGeometry.Parse(data);
if (isSelected)
{
var cache = FromCache(_hitGeometryStyle);
dc.DrawGeometry(
shape.IsFilled ? cache.FillBrush : null,
shape.IsStroked ? cache.StrokePen : null,
geometry);
}
else
{
var cache = FromCache(_geometryStyle);
dc.DrawGeometry(
shape.IsFilled ? cache.FillBrush : null,
shape.IsStroked ? cache.StrokePen : null,
geometry);
}
}
}
private void DrawSpiroPoint(DrawingContext dc, IBrush brush, Pen pen, SpiroControlPoint point)
{
switch (point.Type)
{
case SpiroPointType.Corner:
dc.FillRectangle(brush, new Rect(point.X - 3.5, point.Y - 3.5, 7, 7));
break;
case SpiroPointType.G4:
case SpiroPointType.G2:
case SpiroPointType.Left:
case SpiroPointType.Right:
case SpiroPointType.End:
case SpiroPointType.OpenContour:
case SpiroPointType.EndOpenContour:
var tm = Translate(point.X, point.Y);
var tt = dc.PushPreTransform(tm);
dc.DrawGeometry(null, pen, EndKnot);
tt.Dispose();
break;
}
}
private void DrawSpiroKnot(DrawingContext dc, IBrush brush, Pen pen, SpiroKnot knot)
{
switch (knot.Type)
{
case SpiroPointType.Corner:
dc.FillRectangle(brush, new Rect(knot.X - 3.5, knot.Y - 3.5, 7, 7));
break;
case SpiroPointType.G4:
FillEllipse(dc, brush, new GuidePoint(knot.X, knot.Y), 3.5, 3.5);
break;
case SpiroPointType.G2:
{
var rm = Rotation(ToRadians(knot.Theta), new Vector(knot.X, knot.Y));
var rt = dc.PushPreTransform(rm);
dc.FillRectangle(brush, new Rect(knot.X - 1.5, knot.Y - 3.5, 3, 7));
rt.Dispose();
}
break;
case SpiroPointType.Left:
{
var rm = Rotation(ToRadians(knot.Theta), new Vector(knot.X, knot.Y));
var tm = Translate(knot.X, knot.Y);
var rt = dc.PushPreTransform(rm);
var tt = dc.PushPreTransform(tm);
dc.DrawGeometry(brush, null, LeftKnot);
tt.Dispose();
rt.Dispose();
}
break;
case SpiroPointType.Right:
{
var rm = Rotation(ToRadians(knot.Theta), new Vector(knot.X, knot.Y));
var tm = Translate(knot.X, knot.Y);
var rt = dc.PushPreTransform(rm);
var tt = dc.PushPreTransform(tm);
dc.DrawGeometry(brush, null, RightKnot);
tt.Dispose();
rt.Dispose();
}
break;
case SpiroPointType.End:
{
var rm = Rotation(ToRadians(knot.Theta), new Vector(knot.X, knot.Y));
var tm = Translate(knot.X, knot.Y);
var rt = dc.PushPreTransform(rm);
var tt = dc.PushPreTransform(tm);
dc.DrawGeometry(null, pen, EndKnot);
tt.Dispose();
rt.Dispose();
}
break;
case SpiroPointType.OpenContour:
{
var rm = Rotation(ToRadians(knot.Theta), new Vector(knot.X, knot.Y));
var tm = Translate(knot.X, knot.Y);
var rt = dc.PushPreTransform(rm);
var tt = dc.PushPreTransform(tm);
dc.DrawGeometry(null, pen, OpenContourKnot);
tt.Dispose();
rt.Dispose();
}
break;
case SpiroPointType.EndOpenContour:
{
var rm = Rotation(ToRadians(knot.Theta), new Vector(knot.X, knot.Y));
var tm = Translate(knot.X, knot.Y);
var rt = dc.PushPreTransform(rm);
var tt = dc.PushPreTransform(tm);
dc.DrawGeometry(null, pen, EndOpenContourKnot);
tt.Dispose();
rt.Dispose();
}
break;
}
}
private static void FillEllipse(DrawingContext dc, IBrush brush, GuidePoint point, double radiusX, double radiusY)
{
var g = new EllipseGeometry(new Rect(point.X - radiusX, point.Y - radiusY, 2.0 * radiusX, 2.0 * radiusY));
dc.DrawGeometry(brush, null, g);
}
protected internal override void OnRender(DrawingContext drawingContext)
{
Pen pen = (this.Stroke != null) ? new Pen(this.Stroke, this.StrokeThickness) : null;
Rect shapeBounds = this.RenderedGeometry.GetRenderBounds(pen);
Matrix matrix = Matrix.Identity;
if (this.Stretch != Stretch.None)
{
double scaleX = this.ActualWidth / shapeBounds.Width;
double scaleY = this.ActualHeight / shapeBounds.Height;
switch (this.Stretch)
{
case Stretch.Uniform:
scaleX = scaleY = Math.Min(scaleX, scaleY);
break;
case Stretch.UniformToFill:
// Hmm, in WPF appears to be the same as Uniform. This can't be right...
scaleX = scaleY = Math.Min(scaleX, scaleY);
break;
}
matrix.Translate(-shapeBounds.X, -shapeBounds.Y);
matrix.Scale(scaleX, scaleY);
matrix.Translate(
(this.ActualWidth - (shapeBounds.Width * scaleX)) / 2,
(this.ActualHeight - (shapeBounds.Height * scaleY)) / 2);
}
drawingContext.DrawGeometry(this.Fill, pen, this.RenderedGeometry, matrix);
}
