protected override void OnRender (DrawingContext dc)
{
var anialias = dc.Antialias;
dc.Antialias = SnapsToDevicePixels ? Antialias.None : anialias;
var rect = new Rect (StrokeThickness / 2, StrokeThickness / 2,
Width - StrokeThickness / 2, Height - StrokeThickness / 2);
dc.DrawRectangle (Fill, new Pen (Stroke, StrokeThickness), rect);
dc.Antialias = anialias;
}
public Rect TransformBounds (Rect rect)
{
var inverse = this;
var points = new [] {
inverse.TransformPoint (rect.TopLeft),
inverse.TransformPoint (rect.TopRight),
inverse.TransformPoint (rect.BottomLeft) ,
inverse.TransformPoint (rect.BottomRight)
};
var x1 = points.Min (p => p.X);
var y1 = points.Min (p => p.Y);
var x2 = points.Max (p => p.X);
var y2 = points.Max (p => p.Y);
return new Rect (x1, y1, x2 - x1, y2 - y1);
}
protected sealed override void ArrangeCore (Rect finalRect)
{
base.ArrangeCore (finalRect);
Height = VerticalAlignment == VerticalAlignment.Stretch ? finalRect.Height : DesiredSize.Height;
Width = HorizontalAlignment == HorizontalAlignment.Stretch ? finalRect.Width : DesiredSize.Width;
if (LayoutTransform != null) {
//TODO: adjust height and width depends on vertical/horizontal aligments
Height = savedSize.Height;
Width = savedSize.Width;
}
ArrangeOverride (new Size (Width, Height));
}
public override void DrawRectangle (Brush brush, Pen pen, Rect rectangle)
{
if (brush != null) {
if (brush is SolidColorBrush) {
var b = brush as SolidColorBrush;
cr.Color = new Cairo.Color (b.Color.R, b.Color.G, b.Color.B, b.Color.Alfa);
cr.Rectangle (rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
cr.Fill ();
} else if (brush is LinearGradientBrush) {
var b = brush as LinearGradientBrush;
var pattern = new Cairo.LinearGradient (b.StartPoint.X, b.StartPoint.Y, b.EndPoint.X, b.EndPoint.Y);
foreach (var stop in b.GradientStops) {
pattern.AddColorStop (stop.Offset, new Cairo.Color (stop.Color.R, stop.Color.G, stop.Color.B, stop.Color.Alfa));
}
cr.Pattern = pattern;
cr.Rectangle (rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
cr.Fill ();
}
}
if (pen != null) {
cr.Color = new Cairo.Color (pen.Color.R, pen.Color.G, pen.Color.B, pen.Color.Alfa);
cr.LineWidth = pen.Thickness;
cr.Rectangle (rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
cr.Stroke ();
}
}
public override void DrawRoundedRectangle (Brush brush, Pen pen, Rect rectangle, double radiusX, double radiusY)
{
var figure = new PathFigure ();
figure.StartPoint = new Point (rectangle.X + radiusX, rectangle.Y);
figure.Segments.Add (new LineSegment () { Point = new Point(rectangle.X + rectangle.Width - radiusX, rectangle.Y) });
figure.Segments.Add (new ArcSegment ()
{
Point = new Point(rectangle.X + rectangle.Width, rectangle.Y + radiusY),
Size = new Size(radiusX, radiusY),
SweepDirection = SweepDirection.Clockwise,
IsLargeArc = false
}
);
figure.Segments.Add (new LineSegment () { Point = new Point(rectangle.X + rectangle.Width, rectangle.Y + rectangle.Height - radiusY) });
figure.Segments.Add (new ArcSegment ()
{
Point = new Point(rectangle.X + rectangle.Width - radiusX, rectangle.Y + rectangle.Height),
Size = new Size(radiusX, radiusY),
SweepDirection = SweepDirection.Clockwise,
IsLargeArc = false
}
);
figure.Segments.Add (new LineSegment () { Point = new Point(rectangle.X + radiusX, rectangle.Y + rectangle.Height) });
figure.Segments.Add (new ArcSegment ()
{
Point = new Point(rectangle.X, rectangle.Y + rectangle.Height - radiusY),
Size = new Size(radiusX, radiusY),
SweepDirection = SweepDirection.Clockwise,
IsLargeArc = false
}
);
figure.Segments.Add (new LineSegment () { Point = new Point(rectangle.X, rectangle.Y + radiusY) });
figure.Segments.Add (new ArcSegment ()
{
Point = new Point(rectangle.X + radiusX, rectangle.Y),
Size = new Size(radiusX, radiusY),
SweepDirection = SweepDirection.Clockwise,
IsLargeArc = false
}
);
var path = new PathGeometry ();
path.Figures.Add (figure);
}
public abstract void DrawRoundedRectangle (Brush brush, Pen pen, Rect rectangle, double radiusX, double radiusY);
public abstract void DrawRectangle (Brush brush, Pen pen, Rect rectangle);
protected virtual void ArrangeCore (Rect finalRect)
{
VisualTransform = new TranslateTransform (finalRect.X, finalRect.Y);
if (RenderTransform != null)
VisualTransform = new TransformGroup (new [] {VisualTransform, RenderTransform});
}
public void Arrange (Rect finalRect)
{
ArrangeCore (finalRect);
}