/// <summary>
/// </summary>
/// <param name="canvas"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="i"></param>
/// <param name="p0"></param>
/// <param name="p1"></param>
private void DrawLine(SKCanvas canvas, int width, int height, int i, GraphIndex p0, GraphIndex p1)
{
using (var paint = new SKPaint())
{
paint.Color = SKColors.DarkBlue;
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = 4 * _scale;
paint.IsAntialias = true;
paint.StrokeCap = SKStrokeCap.Round;
var x0 = _paddingW + _availableW * (i - 1) / (_sizeX - 1);
var y0 = height - (_paddingH * 2f + 0.8f * _availableH * (p0.Y - _minY) / _sizeY);
var x1 = _paddingW + _availableW * i / (_sizeX - 1);
var y1 = height - (_paddingH * 2f + 0.8f * _availableH * (p1.Y - _minY) / _sizeY);
var colors = new[]
{
CalcColor(p0.Y),
CalcColor(p1.Y)
};
var shader = SKShader.CreateLinearGradient(new SKPoint(x0, y0), new SKPoint(x1, y1), colors, null, SKShaderTileMode.Clamp);
paint.Shader = shader;
canvas.DrawLine(x0, y0, x1, y1, paint);
}
}
/// <summary>
/// </summary>
/// <param name="canvas"></param>
/// <param name="p"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="scale"></param>
private static void DrawYVal(SKCanvas canvas, GraphIndex p, float x, float y, float scale)
{
using (var paint = new SKPaint())
{
if (p.Hide)
{
return;
}
paint.Color = SKColors.White;
paint.TextSize = 18 * scale;
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = 5 * scale;
paint.IsAntialias = true;
using (var paint2 = new SKPaint())
{
paint2.Style = SKPaintStyle.Fill;
paint2.Color = CalcColor(p.Y);
paint2.TextSize = 18 * scale;
paint2.FakeBoldText = true;
paint2.IsAntialias = true;
SKRect textBounds;
var yLabel = XameteoApp.Instance.Temperature.Convert(p.Y);
paint.MeasureText(yLabel, ref textBounds);
canvas.DrawText(yLabel, x - textBounds.MidX, y + 2 * textBounds.Top, paint);
canvas.DrawText(yLabel, x - textBounds.MidX, y + 2 * textBounds.Top, paint2);
}
}
}
/// <summary>
/// </summary>
/// <param name="canvas"></param>
/// <param name="p"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="scale"></param>
private void DrawLabel(SKCanvas canvas, GraphIndex p, float x, float y, float scale)
{
using (var paint = new SKPaint())
{
if (p.Hide)
{
return;
}
SKRect textBounds;
paint.Color = new SKColor(27, 30, 35);
paint.StrokeWidth = 1 * scale;
paint.IsAntialias = true;
paint.TextSize = 15 * scale;
paint.Style = SKPaintStyle.StrokeAndFill;
paint.MeasureText(p.Label, ref textBounds);
canvas.DrawText(p.Label, x - textBounds.MidX, _availableH - textBounds.Top + _paddingH, paint);
}
}
/// <summary>
/// </summary>
/// <param name="canvas"></param>
/// <param name="p"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="scale"></param>
private void DrawWeatherImag(SKCanvas canvas, GraphIndex p, float x, float y, float scale)
{
using (var paint = new SKPaint())
{
if (p.Hide || p.ImageId == null)
{
return;
}
var assembly = GetType().GetTypeInfo().Assembly;
using (var stream = assembly.GetManifestResourceStream(p.ImageId))
using (var skStream = new SKManagedStream(stream))
{
var bitmap = SKBitmap.Decode(skStream);
var left = x - scale * bitmap.Width / 2;
var top = y - scale * bitmap.Height / 2;
var right = left + scale * bitmap.Width * 1.2f;
var bottom = top + scale * bitmap.Height * 1.2f;
canvas.DrawBitmap(bitmap, new SKRect(left, top, right, bottom));
}
}
}
