public override void Highlight(DrawingContext dc, GeometryStyleBase geometryStyle)
{
if (null == dc || !(geometryStyle is LineStyle))
{
return;
}
LineStyle style = geometryStyle as LineStyle;
Pen pen = new Pen(style.LineBrush, 6);
pen.DashStyle = style.DashStyle;
if (pen.CanFreeze)
{
pen.Freeze();
}
if (!_moving)
{
_beforeMoveFirstPoint = geometryStyle.FirstPoint;
_beforeMoveSecondPoint = geometryStyle.SecondPoint;
}
dc.DrawLine(pen, geometryStyle.FirstPoint, geometryStyle.SecondPoint);
}
public virtual void Move(DrawingContext dc, GeometryStyleBase geometryStyle, double offsetX, double offsetY)
{
if (null == dc)
{
return;
}
geometryStyle.FirstPoint = new Point()
{
X = _beforeMoveFirstPoint.X + offsetX, Y = _beforeMoveFirstPoint.Y + offsetY
};
geometryStyle.SecondPoint = new Point()
{
X = _beforeMoveSecondPoint.X + offsetX, Y = _beforeMoveSecondPoint.Y + offsetY
};
if (geometryStyle.Highlight)
{
Highlight(dc, geometryStyle);
}
else
{
Render(dc, geometryStyle);
}
_moving = true;
}
public override void Render(DrawingContext dc, GeometryStyleBase geometryStyle)
{
if (null == dc || !(geometryStyle is TextStyle))
{
return;
}
TextStyle style = geometryStyle as TextStyle;
if (style.Font == null)
{
return;
}
FontFamily fontFamily = new FontFamily(style.Font.FontFamily.Name);
if (!_moving)
{
_beforeMoveFirstPoint = geometryStyle.FirstPoint;
_beforeMoveSecondPoint = geometryStyle.SecondPoint;
}
if (style.Text == null)
{
dc.DrawRectangle(Brushes.Transparent, _pen, new Rect(geometryStyle.FirstPoint, geometryStyle.SecondPoint));
}
else
{
dc.DrawText(new FormattedText(style.Text, new System.Globalization.CultureInfo("zh-cn"), FlowDirection.LeftToRight,
new Typeface(fontFamily, style.Font.Italic ? FontStyles.Italic : FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
style.Font.Size, style.Foreground), geometryStyle.FirstPoint);
}
}
public override void Render(DrawingContext dc, GeometryStyleBase geometryStyle)
{
if (null == dc || !(geometryStyle is RectangleStyle))
{
return;
}
RectangleStyle style = geometryStyle as RectangleStyle;
Pen pen = new Pen(style.LineBrush, 6);
pen.DashStyle = style.DashStyle;
if (pen.CanFreeze)
{
pen.Freeze();
}
if (!_moving)
{
_beforeMoveFirstPoint = geometryStyle.FirstPoint;
_beforeMoveSecondPoint = geometryStyle.SecondPoint;
}
dc.DrawRectangle(style.FillBrush, pen, new Rect(geometryStyle.FirstPoint, geometryStyle.SecondPoint));
}
public override void Excute(GeometryStyleBase style)
{
if (style == null || style is LineStyle)
{
return;
}
double dx = style.SecondPoint.X - style.FirstPoint.X;
double dy = style.SecondPoint.Y - style.FirstPoint.Y;
double atan = Math.Atan(dy / dx);
if (dx > 0)
{
if (dy > 0)
{
style.SecondPoint = new Point(style.SecondPoint.X, style.FirstPoint.Y + dx);
}
else
{
style.SecondPoint = new Point(style.SecondPoint.X, style.FirstPoint.Y - dx);
}
}
else
{
if (dy > 0)
{
style.SecondPoint = new Point(style.SecondPoint.X, style.FirstPoint.Y - dx);
}
else
{
style.SecondPoint = new Point(style.SecondPoint.X, style.FirstPoint.Y + dx);
}
}
}
public override void Render(DrawingContext dc, GeometryStyleBase geometryStyle)
{
if (null == dc || !(geometryStyle is CircleStyle))
{
return;
}
CircleStyle style = geometryStyle as CircleStyle;
Pen pen = new Pen(style.LineBrush, 6);
pen.DashStyle = style.DashStyle;
if (pen.CanFreeze)
{
pen.Freeze();
}
if (!_moving)
{
_beforeMoveFirstPoint = geometryStyle.FirstPoint;
_beforeMoveSecondPoint = geometryStyle.SecondPoint;
}
dc.DrawEllipse(style.FillBrush, pen, new Point(
(geometryStyle.FirstPoint.X + geometryStyle.SecondPoint.X) / 2, (geometryStyle.FirstPoint.Y + geometryStyle.SecondPoint.Y) / 2),
Math.Abs(geometryStyle.FirstPoint.X - geometryStyle.SecondPoint.X) / 2, Math.Abs(geometryStyle.FirstPoint.Y - geometryStyle.SecondPoint.Y) / 2);
}
public override void Render(DrawingContext dc, GeometryStyleBase geometryStyle)
{
if (null == dc || !(geometryStyle is ImageStyle))
{
return;
}
ImageStyle style = geometryStyle as ImageStyle;
if (!_moving)
{
_beforeMoveFirstPoint = geometryStyle.FirstPoint;
_beforeMoveSecondPoint = geometryStyle.SecondPoint;
}
if (style.ImageUri == null)
{
dc.DrawRectangle(Brushes.Transparent, _pen, new Rect(geometryStyle.FirstPoint, geometryStyle.SecondPoint));
}
else
{
BitmapSource source = new System.Windows.Media.Imaging.BitmapImage(style.ImageUri);
dc.DrawImage(source, new Rect(geometryStyle.FirstPoint, geometryStyle.SecondPoint));
}
}
public override void Excute(GeometryStyleBase style)
{
if (style == null || !(style is LineStyle))
{
return;
}
double dx = style.SecondPoint.X - style.FirstPoint.X;
double dy = style.SecondPoint.Y - style.FirstPoint.Y;
double atan = Math.Atan(dy / dx);
if (atan <= Math.PI / 2 - 0.57)
{
style.SecondPoint = new Point(style.SecondPoint.X, style.FirstPoint.Y);
}
else if (atan >= Math.PI / 2 + 0.57)
{
style.SecondPoint = new Point(style.FirstPoint.X, style.SecondPoint.Y);
}
else
{
style.SecondPoint = new Point(style.SecondPoint.X, style.FirstPoint.Y
+ Math.Abs((style.SecondPoint.X - style.FirstPoint.X)));
}
}
public void Excute(GeometryStyleBase style)
{
if (style == null)
{
return;
}
foreach (var strategy in this)
{
strategy.Excute(style);
}
}
public override void Render(DrawingContext dc, GeometryStyleBase geometryStyle)
{
if (null == dc || !(geometryStyle is TriangleStyle))
{
return;
}
TriangleStyle style = geometryStyle as TriangleStyle;
Pen pen = new Pen(style.LineBrush, 6);
pen.DashStyle = style.DashStyle;
if (pen.CanFreeze)
{
pen.Freeze();
}
if (!_moving)
{
_beforeMoveFirstPoint = geometryStyle.FirstPoint;
_beforeMoveSecondPoint = geometryStyle.SecondPoint;
}
PathGeometry triangle = new PathGeometry();
PathFigure figure = new PathFigure();
figure.IsClosed = true;
figure.StartPoint = new Point((geometryStyle.FirstPoint.X + geometryStyle.SecondPoint.X) / 2, geometryStyle.FirstPoint.Y);
figure.Segments = new PathSegmentCollection()
{
new LineSegment()
{
Point = geometryStyle.SecondPoint
},
new LineSegment()
{
Point = new Point(geometryStyle.FirstPoint.X, geometryStyle.SecondPoint.Y)
}
};
triangle.Figures = new PathFigureCollection()
{
figure
};
dc.DrawGeometry(style.FillBrush, pen, triangle);
}
public abstract void Highlight(DrawingContext dc, GeometryStyleBase geometryStyle);
public void Refresh(DrawingContext dc, GeometryStyleBase geometryStyle)
{
Render(dc, geometryStyle);
}
public abstract void Render(DrawingContext dc, GeometryStyleBase geometryStyle);
public void Hide(DrawingContext dc, GeometryStyleBase geometryStyle)
{
//什么也不干就是隐藏
}
public abstract void Excute(GeometryStyleBase style);
public Image(GeometryStyleBase style, GeometryBaseAction action)
: base()
{
Style = style;
Action = action;
}
public Triangle(GeometryStyleBase style, GeometryBaseAction action)
: base()
{
Style = style;
Action = action;
}
