public static IRenderer Renderer(AnimationMode mode, FitChartValue value, RectF drawingArea)
{
if (mode == AnimationMode.Linear)
{
return new LinearValueRenderer (drawingArea, value);
}
else
{
return new OverdrawValueRenderer (drawingArea, value);
}
}
private float CalculateSweepAngle(float animationSeek, FitChartValue value)
{
float result;
var totalSizeOfValue = value.StartAngle + value.SweepAngle;
if (totalSizeOfValue > animationSeek) {
result = animationSeek - value.StartAngle;
}
else
{
result = value.SweepAngle;
}
return result;
}
public void SetValue(float value)
{
chartValues.Clear ();
var chartValue = new FitChartValue (value, valueStrokeColor);
chartValue.Paint = BuildPaintForValue();
chartValue.StartAngle = StartAngle;
chartValue.SweepAngle = CalculateSweepAngle(value);
chartValues.Add(chartValue);
maxSweepAngle = chartValue.SweepAngle;
PlayAnimation();
}
public LinearValueRenderer (RectF drawingArea, FitChartValue value) : base(drawingArea, value)
{
}
public BaseRenderer (RectF drawingArea, FitChartValue value)
{
DrawingArea = drawingArea;
Value = value;
}
private void RenderValue(Canvas canvas, FitChartValue value)
{
if (!IsInEditMode)
{
var animationSeek = CalculateAnimationSeek ();
var renderer = RendererFactory.Renderer (AnimationMode, value, drawingArea);
var path = renderer.BuildPath (animationProgress, animationSeek);
if (path != null)
{
canvas.DrawPath (path, value.Paint);
}
}
else
{
var path = new Path ();
path.AddArc (drawingArea, StartAngle, DesignModeSweepAngle);
canvas.DrawPath (path, valueDesignPaint);
}
}
public OverdrawValueRenderer (RectF drawingArea, FitChartValue value) : base(drawingArea, value)
{
}