public void Draw(SKCanvas canvas, IReadOnlyViewport viewport, IWidget widget,
float layerOpacity)
{
var scaleBar = (ScaleBarWidget)widget;
if (!scaleBar.CanTransform())
{
return;
}
// If this is the first time, we call this renderer, ...
if (_paintScaleBar == null)
{
// ... than create the paints
_paintScaleBar = CreateScaleBarPaint(SKPaintStyle.Fill);
_paintScaleBarStroke = CreateScaleBarPaint(SKPaintStyle.Stroke);
_paintScaleText = CreateTextPaint(SKPaintStyle.Fill);
_paintScaleTextStroke = CreateTextPaint(SKPaintStyle.Stroke);
}
// Update paints with new values
_paintScaleBar.Color = scaleBar.TextColor.ToSkia(layerOpacity);
_paintScaleBar.StrokeWidth = scaleBar.StrokeWidth * scaleBar.Scale;
_paintScaleBarStroke.Color = scaleBar.Halo.ToSkia(layerOpacity);
_paintScaleBarStroke.StrokeWidth = scaleBar.StrokeWidthHalo * scaleBar.Scale;
_paintScaleText.Color = scaleBar.TextColor.ToSkia(layerOpacity);
_paintScaleText.StrokeWidth = scaleBar.StrokeWidth * scaleBar.Scale;
_paintScaleText.Typeface = SKTypeface.FromFamilyName(scaleBar.Font.FontFamily,
SKFontStyleWeight.Bold, SKFontStyleWidth.Normal, SKFontStyleSlant.Upright);
_paintScaleText.TextSize = (float)scaleBar.Font.Size * scaleBar.Scale;
_paintScaleTextStroke.Color = scaleBar.Halo.ToSkia(layerOpacity);
_paintScaleTextStroke.StrokeWidth = scaleBar.StrokeWidthHalo / 2 * scaleBar.Scale;
_paintScaleTextStroke.Typeface = SKTypeface.FromFamilyName(scaleBar.Font.FontFamily,
SKFontStyleWeight.Bold, SKFontStyleWidth.Normal, SKFontStyleSlant.Upright);
_paintScaleTextStroke.TextSize = (float)scaleBar.Font.Size * scaleBar.Scale;
float scaleBarLength1;
string scaleBarText1;
float scaleBarLength2;
string scaleBarText2;
(scaleBarLength1, scaleBarText1, scaleBarLength2, scaleBarText2) = scaleBar.GetScaleBarLengthAndText(viewport);
// Calc height of scale bar
SKRect textSize = SKRect.Empty;
// Do this, because height of text changes sometimes (e.g. from 2 m to 1 m)
_paintScaleTextStroke.MeasureText("9999 m", ref textSize);
var scaleBarHeight = textSize.Height + (scaleBar.TickLength + scaleBar.StrokeWidthHalo * 0.5f + scaleBar.TextMargin) * scaleBar.Scale;
if (scaleBar.ScaleBarMode == ScaleBarMode.Both && scaleBar.SecondaryUnitConverter != null)
{
scaleBarHeight *= 2;
}
else
{
scaleBarHeight += scaleBar.StrokeWidthHalo * 0.5f * scaleBar.Scale;
}
scaleBar.Height = scaleBarHeight;
// Draw lines
// Get lines for scale bar
var points = scaleBar.GetScaleBarLinePositions(viewport, scaleBarLength1, scaleBarLength2, scaleBar.StrokeWidthHalo);
// BoundingBox for scale bar
BoundingBox envelop = new BoundingBox();
if (points != null)
{
// Draw outline of scale bar
for (int i = 0; i < points.Length; i += 2)
{
canvas.DrawLine((float)points[i].X, (float)points[i].Y, (float)points[i + 1].X, (float)points[i + 1].Y, _paintScaleBarStroke);
}
// Draw scale bar
for (int i = 0; i < points.Length; i += 2)
{
canvas.DrawLine((float)points[i].X, (float)points[i].Y, (float)points[i + 1].X, (float)points[i + 1].Y, _paintScaleBar);
}
envelop = points[0].BoundingBox;
for (int i = 1; i < points.Length; i++)
{
envelop = envelop.Join(points[i].BoundingBox);
}
envelop = envelop.Grow(scaleBar.StrokeWidthHalo * 0.5f * scaleBar.Scale);
}
// Draw text
// Calc text height
SKRect textSize1 = SKRect.Empty;
SKRect textSize2 = SKRect.Empty;
scaleBarText1 = scaleBarText1 ?? string.Empty;
_paintScaleTextStroke.MeasureText(scaleBarText1, ref textSize1);
var(posX1, posY1, posX2, posY2) = scaleBar.GetScaleBarTextPositions(viewport, textSize.ToMapsui(), textSize1.ToMapsui(), textSize2.ToMapsui(), scaleBar.StrokeWidthHalo);
// Now draw text
canvas.DrawText(scaleBarText1, posX1, posY1 - textSize1.Top, _paintScaleTextStroke);
canvas.DrawText(scaleBarText1, posX1, posY1 - textSize1.Top, _paintScaleText);
envelop = envelop.Join(new BoundingBox(posX1, posY1, posX1 + textSize1.Width, posY1 + textSize1.Height));
if (scaleBar.ScaleBarMode == ScaleBarMode.Both && scaleBar.SecondaryUnitConverter != null)
{
// Now draw second text
scaleBarText2 = scaleBarText2 ?? string.Empty;
_paintScaleTextStroke.MeasureText(scaleBarText2, ref textSize2);
canvas.DrawText(scaleBarText2, posX2, posY2 - textSize2.Top, _paintScaleTextStroke);
canvas.DrawText(scaleBarText2, posX2, posY2 - textSize2.Top, _paintScaleText);
envelop = envelop.Join(new BoundingBox(posX2, posY2, posX2 + textSize2.Width, posY2 + textSize2.Height));
}
scaleBar.Envelope = envelop;
if (scaleBar.ShowEnvelop)
{
// Draw a rect around the scale bar for testing
var tempPaint = _paintScaleTextStroke;
canvas.DrawRect(new SKRect((float)envelop.MinX, (float)envelop.MinY, (float)envelop.MaxX, (float)envelop.MaxY), tempPaint);
}
}
private void canvasView_PaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear(SKColors.CornflowerBlue);
int width = e.Info.Width;
int height = e.Info.Height;
// Set transforms
canvas.Translate(width / 2, height / 2);
canvas.Scale(Math.Min(width / 210f, height / 520f));
// Get datetime
DateTime dateTime = DateTime.Now;
// Head
canvas.DrawCircle(0, -160, 75, blackFillPaint);
// Draw ears and eyes
for (int i = 0; i < 2; i++)
{
canvas.Save();
canvas.Scale(2 * i - 1, 1);
canvas.Save();
canvas.Translate(-65, -266);
canvas.DrawPath(catEarPath, blackFillPaint);
canvas.Restore();
canvas.Save();
canvas.Translate(10, -170);
canvas.DrawPath(catEyePath, yellowFillPaint);
canvas.DrawPath(catPupilPath, blackFillPaint);
canvas.Restore();
// Draw whiskers
canvas.DrawLine(10, -120, 100, -100, whiteStrokePaint);
canvas.DrawLine(10, -125, 100, -120, whiteStrokePaint);
canvas.DrawLine(10, -130, 100, -140, whiteStrokePaint);
canvas.DrawLine(10, -135, 100, -160, whiteStrokePaint);
canvas.Restore();
}
// Draw tail
canvas.DrawPath(catTailPath, blackStrokePaint);
// Clock background
canvas.DrawCircle(0, 0, 100, blackFillPaint);
// Hour and minute marks
for (int angle = 0; angle < 360; angle += 6)
{
canvas.DrawCircle(0, -90, angle % 30 == 0 ? 4 : 2, whiteFillPaint);
canvas.RotateDegrees(6);
}
// Hour hand white
canvas.Save();
canvas.RotateDegrees(30 * dateTime.Hour + dateTime.Minute / 2f);
whiteStrokePaint.StrokeWidth = 15;
canvas.DrawLine(0, 0, 0, -50, whiteStrokePaint);
canvas.Restore();
// Hour hand gray
canvas.Save();
canvas.RotateDegrees(30 * dateTime.Hour + dateTime.Minute / 2f);
grayStrokePaint.StrokeWidth = 10;
canvas.DrawLine(0, 0, 0, -50, grayStrokePaint);
canvas.Restore();
// Minute hand white
canvas.Save();
canvas.RotateDegrees(6 * dateTime.Minute + dateTime.Second / 10f);
whiteStrokePaint.StrokeWidth = 10;
canvas.DrawLine(0, 0, 0, -70, whiteStrokePaint);
canvas.Restore();
// Minute hand gray
canvas.Save();
canvas.RotateDegrees(6 * dateTime.Minute + dateTime.Second / 10f);
grayStrokePaint.StrokeWidth = 5;
canvas.DrawLine(0, 0, 0, -70, grayStrokePaint);
canvas.Restore();
// Second hand
canvas.Save();
float seconds = dateTime.Second + dateTime.Millisecond / 1000f;
canvas.RotateDegrees(6 * seconds);
whiteStrokePaint.StrokeWidth = 2;
canvas.DrawLine(0, 0, 0, -80, whiteStrokePaint);
canvas.Restore();
// Draw middle dot
canvas.DrawCircle(0, 0, 3, blackFillPaint);
}
public static void Draw(SKCanvas canvas, double screenWidth, double screenHeight, ZoomInOutWidget zoomInOut,
float layerOpacity)
{
// If this widget belongs to no viewport, than stop drawing
if (zoomInOut.Map == null)
{
return;
}
// If this is the first time, we call this renderer, ...
if (paintStroke == null)
{
// ... than create the paints
paintStroke = CreatePaint(zoomInOut.StrokeColor.ToSkia(layerOpacity), stroke, SKPaintStyle.Stroke);
paintBackground = CreatePaint(zoomInOut.BackColor.ToSkia(layerOpacity), stroke, SKPaintStyle.Fill);
paintText = CreatePaint(zoomInOut.TextColor.ToSkia(layerOpacity), stroke, SKPaintStyle.Fill);
}
else
{
// Update paints with new values
paintStroke.Color = zoomInOut.StrokeColor.ToSkia(zoomInOut.Opacity);
paintBackground.Color = zoomInOut.BackColor.ToSkia(zoomInOut.Opacity);
paintText.Color = zoomInOut.TextColor.ToSkia(zoomInOut.Opacity);
}
var posX = zoomInOut.CalculatePositionX(0, (float)screenWidth, zoomInOut.Orientation == Orientation.Vertical ? zoomInOut.Size : zoomInOut.Size * 2 - stroke);
var posY = zoomInOut.CalculatePositionY(0, (float)screenHeight, zoomInOut.Orientation == Orientation.Vertical ? zoomInOut.Size * 2 - stroke : zoomInOut.Size);
// Draw a rect for zoom in button
SKRect rect;
rect = new SKRect(posX, posY, posX + zoomInOut.Size, posY + zoomInOut.Size);
canvas.DrawRoundRect(rect, 2, 2, paintBackground);
canvas.DrawRoundRect(rect, 2, 2, paintStroke);
// Draw rect for zoom out button
if (zoomInOut.Orientation == Orientation.Vertical)
{
rect = new SKRect(posX, posY + zoomInOut.Size, posX + zoomInOut.Size, posY + zoomInOut.Size * 2 - stroke);
}
else
{
rect = new SKRect(posX + zoomInOut.Size, posY, posX + zoomInOut.Size * 2 - stroke, posY + zoomInOut.Size);
}
canvas.DrawRoundRect(rect, 2, 2, paintBackground);
canvas.DrawRoundRect(rect, 2, 2, paintStroke);
// Draw +
canvas.DrawLine(posX + zoomInOut.Size * 0.3f, posY + zoomInOut.Size * 0.5f, posX + zoomInOut.Size * 0.7f, posY + zoomInOut.Size * 0.5f, paintText);
canvas.DrawLine(posX + zoomInOut.Size * 0.5f, posY + zoomInOut.Size * 0.3f, posX + zoomInOut.Size * 0.5f, posY + zoomInOut.Size * 0.7f, paintText);
// Draw -
if (zoomInOut.Orientation == Orientation.Vertical)
{
canvas.DrawLine(posX + zoomInOut.Size * 0.3f, posY - stroke + zoomInOut.Size * 1.5f, posX + zoomInOut.Size * 0.7f, posY - stroke + zoomInOut.Size * 1.5f, paintText);
}
else
{
canvas.DrawLine(posX - stroke + zoomInOut.Size * 1.3f, posY + zoomInOut.Size * 0.5f, posX - stroke + zoomInOut.Size * 1.7f, posY + zoomInOut.Size * 0.5f, paintText);
}
// Perhaps we should resize the Envelop about half of stroke, because of Skia rendering have of line outside
if (zoomInOut.Orientation == Orientation.Vertical)
{
zoomInOut.Envelope = new BoundingBox(posX, posY, posX + rect.Width, posY + rect.Width * 2 - stroke);
}
else
{
zoomInOut.Envelope = new BoundingBox(posX, posY, posX + rect.Width * 2 - stroke, posY + rect.Width);
}
}
private void canvasView_PaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
canvas.DrawPaint(backgroundFillPaint);
int width = e.Info.Width;
int height = e.Info.Height;
// Set transforms
canvas.Translate(width / 2, height / 2);
canvas.Scale(Math.Min(width / 210f, height / 520f));
// Get DateTime
DateTime dateTime = DateTime.Now;
// Head
canvas.DrawCircle(0, -160, 75, blackFillPaint);
// Draw ears and eyes
for (int i = 0; i < 2; i++)
{
canvas.Save();
canvas.Scale(2 * i - 1, 1);
canvas.Save();
canvas.Translate(-65, -255);
canvas.DrawPath(catEarPath, blackFillPaint);
canvas.Restore();
canvas.Save();
canvas.Translate(10, -170);
canvas.DrawPath(catEyePath, greenFillPaint);
canvas.DrawPath(catPupilPath, blackFillPaint);
canvas.Restore();
// Draw whiskers
canvas.DrawLine(10, -120, 100, -100, whiteStrokePaint);
canvas.DrawLine(10, -125, 100, -120, whiteStrokePaint);
canvas.DrawLine(10, -130, 100, -140, whiteStrokePaint);
canvas.DrawLine(10, -135, 100, -160, whiteStrokePaint);
canvas.Restore();
}
// Move Tail
float t = (float)Math.Sin((dateTime.Second % 2 + dateTime.Millisecond / 1000.0) * Math.PI);
catTailPath.Reset();
catTailPath.MoveTo(0, 100);
SKPoint point1 = new SKPoint(-50 * t, 200);
SKPoint point2 = new SKPoint(0, 250 - Math.Abs(50 * t));
SKPoint point3 = new SKPoint(50 * t, 250 - Math.Abs(75 * t));
catTailPath.CubicTo(point1, point2, point3);
canvas.DrawPath(catTailPath, blackStrokePaint);
// Clock background
canvas.DrawCircle(0, 0, 100, blackFillPaint);
// Hour and minute marks
for (int angle = 0; angle < 360; angle += 6)
{
canvas.DrawCircle(0, -90, angle % 30 == 0 ? 4 : 2, whiteFillPaint);
canvas.RotateDegrees(6);
}
// Hour hand
canvas.Save();
canvas.RotateDegrees(30 * dateTime.Hour + dateTime.Minute / 2f);
canvas.DrawPath(hourHandPath, grayFillPaint);
canvas.DrawPath(hourHandPath, whiteStrokePaint);
canvas.Restore();
// Minute hand
canvas.Save();
canvas.RotateDegrees(6 * dateTime.Minute + dateTime.Second / 10f);
canvas.DrawPath(minuteHandPath, grayFillPaint);
canvas.DrawPath(minuteHandPath, whiteStrokePaint);
canvas.Restore();
// Second hand
canvas.Save();
float seconds = dateTime.Second + dateTime.Millisecond / 1000f;
canvas.RotateDegrees(6 * seconds);
whiteStrokePaint.StrokeWidth = 2;
canvas.DrawLine(0, 10, 0, -80, whiteStrokePaint);
canvas.Restore();
}
public byte[] GetImage(string referenceName, int zoomLevel, int chunk)
{
var refer = _service._references.First(r => r.Name == referenceName);
var height = (_service._histograms[refer.Name].Max() + 1) * 15;
using var surface = SKSurface.Create(new SKImageInfo(WIDTH, height));
using SKCanvas canvas = surface.Canvas;
canvas.Clear();
using SKPaint paint = new SKPaint
{
Style = SKPaintStyle.Stroke,
Color = SKColors.Black,
StrokeWidth = 1
};
using SKPaint fillPaint = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.Blue,
StrokeWidth = 1
};
using SKPaint reverseFillPaint = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.Red,
StrokeWidth = 1
};
var startY = 7;
var list = new List <long> {
0
};
using var reader = new StreamReader($"{_service._references.IndexOf(refer)}.tmp");
string line;
while ((line = reader.ReadLine()) != null)
{
var splitLine = line.Split('\t');
var read = new SamFile
{
QueryName = splitLine[0],
ReferenceName = splitLine[1],
StartingPos = int.Parse(splitLine[2]),
DrawExpressions = DataService.GetDrawExpressions(splitLine[3]),
Reverse = bool.Parse(splitLine[4])
};
var realStartingX = zoomLevel * read.StartingPos;
if (realStartingX >= (chunk + 1) * WIDTH)
{
break;
}
var index = list.FindIndex(i => realStartingX > i + 1);
var y = startY * (index != -1 ? index : list.Count);
var lineLength = read.DrawExpressions.Sum(de => de.Length) * zoomLevel;
if (index == -1)
{
list.Add(realStartingX + lineLength);
}
else
{
list[index] = realStartingX + lineLength;
}
realStartingX -= chunk * WIDTH;
if (realStartingX < 0 && realStartingX + lineLength < 0)
{
continue;
}
canvas.DrawLine(new SKPoint(realStartingX, y + 3), new SKPoint(realStartingX + lineLength, y + 3), paint);
var currentX = realStartingX;
foreach (var draw in read.DrawExpressions)
{
if (draw.Type == DrawType.Rectangle)
{
canvas.DrawRect(currentX, y, draw.Length * zoomLevel, 5, read.Reverse ? reverseFillPaint : fillPaint);
canvas.DrawRect(currentX, y, draw.Length * zoomLevel, 5, paint);
}
currentX += draw.Length * zoomLevel;
}
canvas.Flush();
}
var width = (chunk + 1) * WIDTH * zoomLevel > refer.Length * zoomLevel ? refer.Length * zoomLevel % WIDTH : WIDTH;
var realHeight = 7 * (list.Count + 1);
SKPixmap pixmap = surface.Snapshot().Subset(SKRectI.Create(0, 0, width, realHeight)).PeekPixels();
SKData data;
if (realHeight > 15000)
{
data = pixmap.Encode(SKPngEncoderOptions.Default);
}
else
{
var options = new SKWebpEncoderOptions(SKWebpEncoderCompression.Lossless, 100);
data = pixmap.Encode(options);
}
return(data.ToArray());
}
){kind=link}
private void ReadElement(XElement e, SKCanvas canvas, SKPaint stroke, SKPaint fill)
{
// transform matrix
var transform = ReadTransform(e.Attribute("transform")?.Value ?? string.Empty);
canvas.Save();
canvas.Concat(ref transform);
// SVG element
var elementName = e.Name.LocalName;
var isGroup = elementName == "g";
// read style
var style = ReadPaints(e, ref stroke, ref fill, isGroup);
// parse elements
switch (elementName)
{
case "text":
if (stroke != null || fill != null)
{
ReadText(e, canvas, stroke?.Clone(), fill?.Clone());
}
break;
case "rect":
if (stroke != null || fill != null)
{
var x = ReadNumber(e.Attribute("x"));
var y = ReadNumber(e.Attribute("y"));
var width = ReadNumber(e.Attribute("width"));
var height = ReadNumber(e.Attribute("height"));
var rx = ReadNumber(e.Attribute("rx"));
var ry = ReadNumber(e.Attribute("ry"));
var rect = SKRect.Create(x, y, width, height);
if (rx > 0 || ry > 0)
{
if (fill != null)
{
canvas.DrawRoundRect(rect, rx, ry, fill);
}
if (stroke != null)
{
canvas.DrawRoundRect(rect, rx, ry, stroke);
}
}
else
{
if (fill != null)
{
canvas.DrawRect(rect, fill);
}
if (stroke != null)
{
canvas.DrawRect(rect, stroke);
}
}
}
break;
case "ellipse":
if (stroke != null || fill != null)
{
var cx = ReadNumber(e.Attribute("cx"));
var cy = ReadNumber(e.Attribute("cy"));
var rx = ReadNumber(e.Attribute("rx"));
var ry = ReadNumber(e.Attribute("ry"));
if (fill != null)
{
canvas.DrawOval(cx, cy, rx, ry, fill);
}
if (stroke != null)
{
canvas.DrawOval(cx, cy, rx, ry, stroke);
}
}
break;
case "circle":
if (stroke != null || fill != null)
{
var cx = ReadNumber(e.Attribute("cx"));
var cy = ReadNumber(e.Attribute("cy"));
var rr = ReadNumber(e.Attribute("r"));
if (fill != null)
{
canvas.DrawCircle(cx, cy, rr, fill);
}
if (stroke != null)
{
canvas.DrawCircle(cx, cy, rr, stroke);
}
}
break;
case "path":
if (stroke != null || fill != null)
{
var d = e.Attribute("d")?.Value;
if (!string.IsNullOrWhiteSpace(d))
{
var path = SKPath.ParseSvgPathData(d);
if (fill != null)
{
canvas.DrawPath(path, fill);
}
if (stroke != null)
{
canvas.DrawPath(path, stroke);
}
}
}
break;
case "polygon":
case "polyline":
if (stroke != null || fill != null)
{
var close = elementName == "polygon";
var p = e.Attribute("points")?.Value;
if (!string.IsNullOrWhiteSpace(p))
{
var path = ReadPolyPath(p, close);
if (fill != null)
{
canvas.DrawPath(path, fill);
}
if (stroke != null)
{
canvas.DrawPath(path, stroke);
}
}
}
break;
case "g":
if (e.HasElements)
{
// get current group opacity
float groupOpacity = ReadOpacity(style);
if (groupOpacity != 1.0f)
{
var opacity = (byte)(255 * groupOpacity);
var opacityPaint = new SKPaint {
Color = SKColors.Black.WithAlpha(opacity)
};
// apply the opacity
canvas.SaveLayer(opacityPaint);
}
foreach (var gElement in e.Elements())
{
ReadElement(gElement, canvas, stroke?.Clone(), fill?.Clone());
}
// restore state
if (groupOpacity != 1.0f)
{
canvas.Restore();
}
}
break;
case "use":
if (e.HasAttributes)
{
var href = ReadHref(e);
if (href != null)
{
// TODO: copy/process other attributes
var x = ReadNumber(e.Attribute("x"));
var y = ReadNumber(e.Attribute("y"));
var useTransform = SKMatrix.MakeTranslation(x, y);
canvas.Save();
canvas.Concat(ref useTransform);
ReadElement(href, canvas, stroke?.Clone(), fill?.Clone());
canvas.Restore();
}
}
break;
case "line":
if (stroke != null)
{
var x1 = ReadNumber(e.Attribute("x1"));
var x2 = ReadNumber(e.Attribute("x2"));
var y1 = ReadNumber(e.Attribute("y1"));
var y2 = ReadNumber(e.Attribute("y2"));
canvas.DrawLine(x1, y1, x2, y2, stroke);
}
break;
case "switch":
if (e.HasElements)
{
foreach (var ee in e.Elements())
{
var requiredFeatures = ee.Attribute("requiredFeatures");
var requiredExtensions = ee.Attribute("requiredExtensions");
var systemLanguage = ee.Attribute("systemLanguage");
// TODO: evaluate requiredFeatures, requiredExtensions and systemLanguage
var isVisible =
requiredFeatures == null &&
requiredExtensions == null &&
systemLanguage == null;
if (isVisible)
{
ReadElement(ee, canvas, stroke?.Clone(), fill?.Clone());
}
}
}
break;
case "defs":
case "title":
case "desc":
case "description":
// already read earlier
break;
default:
LogOrThrow($"SVG element '{elementName}' is not supported");
break;
}
// restore matrix
canvas.Restore();
}
private void canvas_PaintSurface(object sender, SkiaSharp.Views.Forms.SKPaintSurfaceEventArgs e)
{
SKImageInfo info = e.Info;
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
SKPaint strokePaint = GetPaintColor(SKPaintStyle.Stroke, null, 10, SKStrokeCap.Square);
SKPaint dotPaint = GetPaintColor(SKPaintStyle.Fill, "#DE0469");
SKPaint hrPaint = GetPaintColor(SKPaintStyle.Stroke, "#262626", 4, SKStrokeCap.Square);
SKPaint minPaint = GetPaintColor(SKPaintStyle.Stroke, "#DE0469", 2, SKStrokeCap.Square);
SKPaint bgPaint = GetPaintColor(SKPaintStyle.Fill, "#FFFFFF");
canvas.Clear();
SKRect arcRect = new SKRect(10, 10, info.Width - 10, info.Height - 10);
SKRect bgRect = new SKRect(25, 25, info.Width - 25, info.Height - 25);
canvas.DrawOval(bgRect, bgPaint);
strokePaint.Shader = SKShader.CreateLinearGradient(
new SKPoint(arcRect.Left, arcRect.Top),
new SKPoint(arcRect.Right, arcRect.Bottom),
new SKColor[] { SKColor.Parse("#DE0469"), SKColors.Transparent },
new float[] { 0, 1 },
SKShaderTileMode.Repeat);
path.ArcTo(arcRect, 45, arcLength, true);
canvas.DrawPath(path, strokePaint);
canvas.Translate(info.Width / 2, info.Height / 2);
canvas.Scale(info.Width / 200f);
canvas.Save();
canvas.RotateDegrees(240);
canvas.DrawCircle(0, -75, 2, dotPaint);
canvas.Restore();
DateTime dateTime = DateTime.Now;
//Draw hour hand
canvas.Save();
canvas.RotateDegrees(30 * dateTime.Hour + dateTime.Minute / 2f);
canvas.DrawLine(0, 5, 0, -60, hrPaint);
canvas.Restore();
//Draw minute hand
canvas.Save();
canvas.RotateDegrees(6 * dateTime.Minute + dateTime.Second / 10f);
canvas.DrawLine(0, 10, 0, -90, minPaint);
canvas.Restore();
canvas.DrawCircle(0, 0, 5, dotPaint);
secondsTxt.Text = dateTime.Second.ToString("00");
timeTxt.Text = dateTime.ToString("hh:mm");
periodTxt.Text = dateTime.Hour >= 12 ? "PM" : "AM";
var alarmDiff = alarmDate - dateTime;
alarmTxt.Text = $"{alarmDiff.Hours}h {alarmDiff.Minutes}m until next alarm";
}
public void DrawLine(Vector2 from, Vector2 to)
{
SetLineStyle();
_skiaCanvas.DrawLine(from.ToSkiaPoint(), to.ToSkiaPoint(), _skiaPaint);
}
private void SKCanvasView_PaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear(SKColors.Transparent);
int width = e.Info.Width;
int height = e.Info.Height;
double heightAsDp = Height;
double widthAsDp = Width;
var density = width / widthAsDp;
float tickSizeAsPixel = (float)density * TickSize;
float currentTickSizeAsPixel = (float)density * CurrentTickSize;
float tickWidthAsPixel = (float)density * TickWidth;
TickPaint = new SKPaint()
{
Color = SKColors.Wheat,
Style = SKPaintStyle.StrokeAndFill,
StrokeWidth = tickWidthAsPixel,
IsAntialias = IsAntialias,
};
CurrentTickPaint = new SKPaint()
{
Color = SKColors.MediumVioletRed,
Style = SKPaintStyle.StrokeAndFill,
StrokeWidth = tickWidthAsPixel * 1.5f,
IsAntialias = IsAntialias,
};
EllepsedTickPaint = new SKPaint()
{
Color = SKColors.MidnightBlue,
Style = SKPaintStyle.StrokeAndFill,
StrokeWidth = tickWidthAsPixel,
IsAntialias = IsAntialias,
};
int radius = (width <= height ? width : height) / 2;
float TickMargin = currentTickSizeAsPixel - tickSizeAsPixel;
float degreeStep = (Direction == Direction.Clockwise ? 1 : -1) * (FinishAngleDegree - StartAngleDegree) / TickCount;
float currentTickDegree = CurrentTick * (Direction == Direction.Clockwise ? 1 : -1) * (FinishAngleDegree - StartAngleDegree) / TickCount;
var tickStartRadius = radius - currentTickSizeAsPixel;
var tickEndRadius = radius - TickMargin;
canvas.Translate(width / 2, height / 2);
canvas.Save();
canvas.RotateDegrees(StartAngleDegree);
for (int i = 0; i < TickCount; i++)
{
if (i < CurrentTick)
{
canvas.DrawLine(0, tickStartRadius, 0, tickEndRadius, EllepsedTickPaint);
}
else
{
canvas.DrawLine(0, tickStartRadius, 0, tickEndRadius, TickPaint);
}
canvas.RotateDegrees(degreeStep);
}
canvas.Restore();
canvas.Save();
canvas.RotateDegrees(StartAngleDegree + currentTickDegree);
canvas.DrawLine(0, tickStartRadius, 0, radius, CurrentTickPaint);
canvas.Restore();
}
public byte[] DrawAreaAtSize(ImageStats stats, List <CompletePaintOp> paintOps)
{
//This is the new core drawing function. Once the paint operations have been created, I just draw them here.
//baseline image data stuff
SKBitmap bitmap = new SKBitmap(stats.imageSizeX, stats.imageSizeY, SKColorType.Rgba8888, SKAlphaType.Premul);
SKCanvas canvas = new SKCanvas(bitmap);
canvas.Clear(eraser.Color);
canvas.Scale(1, -1, stats.imageSizeX / 2, stats.imageSizeY / 2);
SKPaint paint = new SKPaint();
foreach (var w in paintOps.OrderByDescending(p => p.paintOp.LayerId).ThenByDescending(p => p.areaSize))
{
paint = cachedPaints[w.paintOp.Id]; //SetPaintForTPP(w.paintOp); // w.paintOp.paint;
if (w.paintOp.FromTag) //FromTag is for when you are saving color data directly to each element, instead of tying it to a styleset.
{
paint.Color = SKColor.Parse(w.tagValue);
}
if (w.paintOp.Randomize) //To randomize the color on every Draw call.
{
paint.Color = new SKColor((byte)r.Next(0, 255), (byte)r.Next(0, 255), (byte)r.Next(0, 255), 99);
}
paint.StrokeWidth = (float)w.lineWidthPixels;
var path = new SKPath();
switch (w.elementGeometry.GeometryType)
{
case "Polygon":
var p = w.elementGeometry as Polygon;
//if (p.Envelope.Length < (stats.degreesPerPixelX * 4)) //This poly's perimeter is too small to draw
//continue;
path.AddPoly(PolygonToSKPoints(p.ExteriorRing, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY));
foreach (var ir in p.Holes)
{
//if (ir.Envelope.Length < (w.lineWidth * 4)) //This poly's perimeter is less than 2x2 pixels in size.
//continue;
path.AddPoly(PolygonToSKPoints(ir, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY));
}
canvas.DrawPath(path, paint);
break;
case "MultiPolygon":
foreach (var p2 in ((MultiPolygon)w.elementGeometry).Geometries)
{
//if (p2.Envelope.Length < (stats.degreesPerPixelX * 4)) //This poly's perimeter is too small to draw
//continue;
var p2p = p2 as Polygon;
path.AddPoly(PolygonToSKPoints(p2p.ExteriorRing, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY));
foreach (var ir in p2p.Holes)
{
//if (ir.Envelope.Length < (stats.degreesPerPixelX * 4)) //This poly's perimeter is too small to draw
// continue;
path.AddPoly(PolygonToSKPoints(ir, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY));
}
canvas.DrawPath(path, paint);
}
break;
case "LineString":
var firstPoint = w.elementGeometry.Coordinates.First();
var lastPoint = w.elementGeometry.Coordinates.Last();
var points = PolygonToSKPoints(w.elementGeometry, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY);
if (firstPoint.Equals(lastPoint))
{
//This is a closed shape. Check to see if it's supposed to be filled in.
if (paint.Style == SKPaintStyle.Fill)
{
path.AddPoly(points);
canvas.DrawPath(path, paint);
continue;
}
}
//if (w.lineWidth < 1) //Don't draw lines we can't see.
//continue;
for (var line = 0; line < points.Length - 1; line++)
{
canvas.DrawLine(points[line], points[line + 1], paint);
}
break;
case "MultiLineString":
//if (w.lineWidth < 1) //Don't draw lines we can't see.
//continue;
foreach (var p3 in ((MultiLineString)w.elementGeometry).Geometries)
{
var points2 = PolygonToSKPoints(p3, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY);
for (var line = 0; line < points2.Length - 1; line++)
{
canvas.DrawLine(points2[line], points2[line + 1], paint);
}
}
break;
case "Point":
var convertedPoint = PolygonToSKPoints(w.elementGeometry, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY);
//If this type has an icon, use it. Otherwise draw a circle in that type's color.
if (!string.IsNullOrEmpty(w.paintOp.FileName))
{
SKBitmap icon = SKBitmap.Decode(TagParser.cachedBitmaps[w.paintOp.FileName]); //TODO optimize by making icons in Initialize.
canvas.DrawBitmap(icon, convertedPoint[0]);
}
else
{
var circleRadius = (float)(ConstantValues.resolutionCell10 / stats.degreesPerPixelX / 2); //I want points to be drawn as 1 Cell10 in diameter.
canvas.DrawCircle(convertedPoint[0], circleRadius, paint);
//TODO re-add outline paint to this DLL not TagParser.
//canvas.DrawCircle(convertedPoint[0], circleRadius, TagParser.outlinePaint);
}
break;
default:
Log.WriteLog("Unknown geometry type found, not drawn.");
break;
}
}
//}
var ms = new MemoryStream();
var skms = new SKManagedWStream(ms);
bitmap.Encode(skms, SKEncodedImageFormat.Png, 100);
var results = ms.ToArray();
skms.Dispose(); ms.Close(); ms.Dispose();
return(results);
}
/// <summary>
/// Creates an SVG image instead of a PNG file, but otherwise operates the same as DrawAreaAtSize.
/// </summary>
/// <param name="stats">the image properties to draw</param>
/// <param name="drawnItems">the list of elements to draw. Will load from the database if null.</param>
/// <param name="styles">a dictionary of TagParserEntries to select to draw</param>
/// <param name="filterSmallAreas">if true, skips entries below a certain size when drawing.</param>
/// <returns>a string containing the SVG XML</returns>
public string DrawAreaAtSizeSVG(ImageStats stats, List <DbTables.Place> drawnItems = null, Dictionary <string, StyleEntry> styles = null, bool filterSmallAreas = true)
{
//TODO: make this take CompletePaintOps
//This is the new core drawing function. Takes in an area, the items to draw, and the size of the image to draw.
//The drawn items get their paint pulled from the TagParser's list. If I need multiple match lists, I'll need to make a way
//to pick which list of tagparser rules to use.
if (styles == null)
{
styles = TagParser.allStyleGroups.First().Value;
}
double minimumSize = 0;
if (filterSmallAreas)
{
minimumSize = stats.degreesPerPixelX; //don't draw elements under 1 pixel in size. at slippy zoom 12, this is approx. 1 pixel for a Cell10.
}
var db = new PraxisContext();
var geo = Converters.GeoAreaToPolygon(stats.area);
if (drawnItems == null)
{
drawnItems = GetPlaces(stats.area, filterSize: minimumSize);
}
//baseline image data stuff
//SKBitmap bitmap = new SKBitmap(stats.imageSizeX, stats.imageSizeY, SKColorType.Rgba8888, SKAlphaType.Premul);
var bounds = new SKRect(0, 0, stats.imageSizeX, stats.imageSizeY);
MemoryStream s = new MemoryStream();
SKCanvas canvas = SKSvgCanvas.Create(bounds, s); //output not guaranteed to be complete until the canvas is deleted?!?
//SKCanvas canvas = new SKCanvas(bitmap);
var bgColor = SKColor.Parse(styles["background"].PaintOperations.First().HtmlColorCode);
//Backgound is a named style, unmatched will be the last entry and transparent.
canvas.Clear(bgColor);
canvas.Scale(1, -1, stats.imageSizeX / 2, stats.imageSizeY / 2);
SKPaint paint = new SKPaint();
//I guess what I want here is a list of an object with an elementGeometry object for the shape, and a paintOp attached to it
var pass1 = drawnItems.Select(d => new { d.AreaSize, d.ElementGeometry, paintOp = styles[d.GameElementName].PaintOperations });
var pass2 = new List <CompletePaintOp>(drawnItems.Count() * 2);
foreach (var op in pass1)
{
foreach (var po in op.paintOp)
{
pass2.Add(new CompletePaintOp(op.ElementGeometry, op.AreaSize, po, "", po.LineWidthDegrees * stats.pixelsPerDegreeX));
}
}
foreach (var w in pass2.OrderByDescending(p => p.paintOp.LayerId).ThenByDescending(p => p.areaSize))
{
paint = cachedPaints[w.paintOp.Id];
if (paint.Color.Alpha == 0)
{
continue; //This area is transparent, skip drawing it entirely.
}
if (stats.degreesPerPixelX > w.paintOp.MaxDrawRes || stats.degreesPerPixelX < w.paintOp.MinDrawRes)
{
continue; //This area isn't drawn at this scale.
}
var path = new SKPath();
switch (w.elementGeometry.GeometryType)
{
//Polygons without holes are super easy and fast: draw the path.
//Polygons with holes require their own bitmap to be drawn correctly and then overlaid onto the canvas.
//I want to use paths to fix things for performance reasons, but I have to use Bitmaps because paths apply their blend mode to
//ALL elements already drawn, not just the last one.
case "Polygon":
var p = w.elementGeometry as Polygon;
path.AddPoly(PolygonToSKPoints(p, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY));
foreach (var hole in p.InteriorRings)
{
path.AddPoly(PolygonToSKPoints(hole, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY));
}
canvas.DrawPath(path, paint);
break;
case "MultiPolygon":
foreach (var p2 in ((MultiPolygon)w.elementGeometry).Geometries)
{
var p2p = p2 as Polygon;
path.AddPoly(PolygonToSKPoints(p2p, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY));
foreach (var hole in p2p.InteriorRings)
{
path.AddPoly(PolygonToSKPoints(hole, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY));
}
canvas.DrawPath(path, paint);
}
break;
case "LineString":
var firstPoint = w.elementGeometry.Coordinates.First();
var lastPoint = w.elementGeometry.Coordinates.Last();
var points = PolygonToSKPoints(w.elementGeometry, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY);
if (firstPoint.Equals(lastPoint))
{
//This is a closed shape. Check to see if it's supposed to be filled in.
if (paint.Style == SKPaintStyle.Fill)
{
path.AddPoly(points);
canvas.DrawPath(path, paint);
continue;
}
}
for (var line = 0; line < points.Length - 1; line++)
{
canvas.DrawLine(points[line], points[line + 1], paint);
}
break;
case "MultiLineString":
foreach (var p3 in ((MultiLineString)w.elementGeometry).Geometries)
{
var points2 = PolygonToSKPoints(p3, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY);
for (var line = 0; line < points2.Length - 1; line++)
{
canvas.DrawLine(points2[line], points2[line + 1], paint);
}
}
break;
case "Point":
var convertedPoint = PolygonToSKPoints(w.elementGeometry, stats.area, stats.degreesPerPixelX, stats.degreesPerPixelY);
//If this type has an icon, use it. Otherwise draw a circle in that type's color.
if (!string.IsNullOrEmpty(w.paintOp.FileName))
{
SKBitmap icon = SKBitmap.Decode(TagParser.cachedBitmaps[w.paintOp.FileName]); //TODO optimize by creating in Initialize
canvas.DrawBitmap(icon, convertedPoint[0]);
}
else
{
var circleRadius = (float)(ConstantValues.resolutionCell10 / stats.degreesPerPixelX / 2); //I want points to be drawn as 1 Cell10 in diameter.
canvas.DrawCircle(convertedPoint[0], circleRadius, paint);
}
break;
default:
Log.WriteLog("Unknown geometry type found, not drawn.");
break;
}
}
canvas.Flush();
canvas.Dispose();
canvas = null;
s.Position = 0;
var svgData = new StreamReader(s).ReadToEnd();
return(svgData);
}
public override void Draw(SKCanvas canvas, SKPaint paint, int x, int y)
{
canvas.DrawLine(new SKPoint(x - 100, y), new SKPoint(x + 100, y), paint);
}
public void Render(SKCanvas canvas, MapDataContext mapDataContext)
{
var solarSystemVertexes = new List <SolarSystemVertex>();
foreach (var solarSystem in mapDataContext.SolarSystems)
{
solarSystemVertexes.Add(new SolarSystemVertex(solarSystem));
}
var voronoiMesh = VoronoiMesh.Create <SolarSystemVertex, SolarySystemTriangulationCell>(solarSystemVertexes);
var voronoiCells = CreateVoronoiCells(voronoiMesh);
using (var paint = new SKPaint())
{
paint.Style = SKPaintStyle.Fill;
paint.IsAntialias = true;
foreach (var cell in voronoiCells)
{
var solarSystem = cell.SolarSystemVertex.SolarSystem;
var cellVertices = cell.SolarSystemVoronoiEdges;
var points = SortVertices(cellVertices.SelectMany(x => new List <SKPoint>()
{
x.PointOne, x.PointTwo
}).Distinct().ToList()).ToArray();
if (solarSystem.allianceID != null && solarSystem.allianceID != 0)
{
var md5 = MD5.Create();
var hash = md5.ComputeHash(Encoding.UTF8.GetBytes(solarSystem.allianceID.ToString()));
paint.Color = new SKColor(hash[0], hash[1], hash[2]).WithAlpha(60);
var path = new SKPath();
// for (var i = 0; i < cellVertices.Count(); i++)
// {
// path.MoveTo(cellVertices[i].PointOne);
// path.LineTo(cellVertices[i].PointTwo);
// }
path.MoveTo(points.First());
for (var i = 0; i < points.Count(); i++)
{
path.LineTo(points[i]);
}
path.LineTo(points.First());
canvas.DrawPath(path, paint);
// canvas.DrawPoints(SKPointMode.Polygon, points, paint);
}
else
{
paint.Color = new SKColor(0xB0, 0xB0, 0xFF).WithAlpha(50);
var path = new SKPath();
for (var i = 0; i < cellVertices.Count(); i++)
{
path.MoveTo(cellVertices[i].PointOne);
path.LineTo(cellVertices[i].PointTwo);
}
// canvas.DrawPath(path, paint);
}
// paint.Color = new SKColor(randomBytes[0], randomBytes[1], randomBytes[2]);
}
canvas.DrawLine(new SKPoint(0.0f, 0.0f), new SKPoint(100.0f, 100.0f), paint);
}
}
public static void DrawLine(this SKCanvas canvas, float x1, float y1, float x2, float y2, SKColor color, int thickness = 1)
{
using var paint = new SKPaint { Color = color, StrokeWidth = thickness };
canvas.DrawLine(x1, y1, x2, y2, paint);
}
public override bool Draw(SKCanvas c)
{
c.DrawLine(Point1.X, Point1.Y, Point2.X, Point2.Y, Paint);
return(true);
}
private void OnCanvasViewPaintSurfaceAsync(object sender, SKPaintSurfaceEventArgs e)
{
var ArenaCell = (SKCanvasView)sender;
int[] index = new int[2] {
int.Parse(ArenaCell.StyleId[0].ToString()), int.Parse(ArenaCell.StyleId[1].ToString())
};
SKImageInfo info = e.Info;
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
if (ArenaCell.StyleId == "98")
{
if (GameViewModel.PlayerSymbol == 'X')
{
x = info.Width;
y = info.Height;
canvas.DrawLine(40, 40, x - 40, y - 40, paint);
canvas.DrawLine(40, y - 40, x - 40, 40, paint);
}
else
{
x = info.Width;
canvas.DrawCircle(info.Width / 2, info.Height / 2, (x / 2) - 30, paint);
}
return;
}
else if (ArenaCell.StyleId == "99")
{
if (GameViewModel.OpponentSymbol == 'X')
{
x = info.Width;
y = info.Height;
canvas.DrawLine(40, 40, x - 40, y - 40, paint);
canvas.DrawLine(40, y - 40, x - 40, 40, paint);
}
else
{
x = info.Width;
canvas.DrawCircle(info.Width / 2, info.Height / 2, (x / 2) - 30, paint);
}
return;
}
else if (GameViewModel.ArenaMatrix[index[0], index[1]] == ' ')
{
return;
}
else if (GameViewModel.ArenaMatrix[index[0], index[1]] == 'X')
{
x = info.Width;
y = info.Height;
canvas.DrawLine(35, 35, x - 35, y - 35, paint);
canvas.DrawLine(35, y - 35, x - 35, 35, paint);
}
else
{
x = info.Width;
int i = 35;
canvas.DrawCircle(info.Width / 2, info.Height / 2, (x / 2) - i, paint);
}
}
private void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
SKCanvasView canvasView = (SKCanvasView)sender;
Pattern pattern = (Pattern)canvasView.BindingContext;
canvas.Clear();
int diagramsize = pattern.Fretboard.GetLength(1) - pattern.FirstFret + 1;
diagramsize = diagramsize > 5 ? diagramsize : 5;
int scale = info.Width / diagramsize;
int scalecenter = (int)(scale * 0.5f);
int neckright = (int)(scale * 3.5f);
int radius = (int)(scale * 0.4f);
int firstfret = pattern.FirstFret;
int numfrets = pattern.Fretboard.GetLength(1);
int numstrings = pattern.Fretboard.GetLength(0);
const int pad = 15;
int i, j;
SKPaint notes = new SKPaint
{
Style = SKPaintStyle.StrokeAndFill,
Color = Color.Black.ToSKColor(),
StrokeWidth = 1,
TextSize = scale
};
SKPaint lines = new SKPaint
{
Style = SKPaintStyle.StrokeAndFill,
StrokeWidth = 5,
Color = Color.LightGray.ToSKColor()
};
// Draw the frets
for (j = firstfret; j < numfrets + 1 || j < 4; j++)
{
int fretheight = (j - pattern.FirstFret + 1) * scale + pad;
canvas.DrawLine(scalecenter, fretheight, neckright, fretheight, lines);
}
// Draw the strings
lines.Color = Color.Black.ToSKColor();
for (i = 0; i < numstrings; i++)
{
int stringpos = (i + 1) * scale - scalecenter;
canvas.DrawLine(stringpos, 0, stringpos, info.Height, lines);
}
// Draw the notes
for (i = 0; i < numstrings; i++)
{
for (j = firstfret; j < numfrets; j++)
{
if (pattern.Fretboard[i, j] <= 0)
{
continue;
}
int x = (i + 1) * scale - scalecenter;
int y = (j - pattern.FirstFret + 1) * scale - scalecenter + pad;
canvas.DrawCircle(x, y, radius, notes);
}
}
// Draw the nut
lines.Color = Color.Black.ToSKColor();
lines.StrokeWidth = pad * 2;
canvas.DrawLine(scalecenter, 0, neckright, 0, lines);
// Draw the first fret number, if any
if (firstfret > 0)
{
canvas.DrawText($"{firstfret + 1}", 4 * scale, scale - scalecenter + (int)(pad * 1.5f), notes);
}
}
public void Draw(SKCanvas canvas, IReadOnlyViewport viewport, IWidget widget, float layerOpacity)
{
canvas.RotateDegrees((float)viewport.Rotation, 0.0f, 0.0f);
var TL = viewport.ScreenToWorld(canvas.LocalClipBounds.Left, canvas.LocalClipBounds.Top);
var BR = viewport.ScreenToWorld(canvas.LocalClipBounds.Right, canvas.LocalClipBounds.Bottom);
var width = viewport.Extent.Width;
var height = viewport.Extent.Height;
var usedLineOffset = lineOffset;
uint usedLineOffsetInt = (uint)usedLineOffset;
IEnumerable <SKPaint> usedPaints = paints;
if (viewport.Resolution > 0.25)
{
usedLineOffset *= 10; // hide 10m layer
usedLineOffsetInt *= 10; // hide 10m layer
usedPaints = paintsL2;
}
if (viewport.Resolution > 3)
{
usedLineOffset *= 10; // hide 100m layer
usedLineOffsetInt *= 10; // hide 100m layer
usedPaints = paintsL3;
}
int lineCount100M = (int)(100 / usedLineOffset);
//How many lines are 1000m
int lineCount1000M = (int)(1000 / usedLineOffset);
if (lineCount100M == 0)
{
lineCount100M = 9000; //will never be reached, if we only render 1k's
}
double screenWidthPerLine = canvas.LocalClipBounds.Width / (width / usedLineOffset);
double screenHeightPerLine = canvas.LocalClipBounds.Height / (height / usedLineOffset);
//World coordinates of first lineOffset line
var first100mW = (TL.X + (usedLineOffset - TL.X % usedLineOffset));
var first100mH = (TL.Y + (usedLineOffset - TL.Y % usedLineOffset));
//Screen offset of first lineOffset line
double offsetCW = ((first100mW - TL.X) / usedLineOffset) * screenWidthPerLine;
double offsetCH = screenHeightPerLine + ((TL.Y - first100mH) / usedLineOffset) * screenHeightPerLine;
//offset of next 1k
int KOffsetW = (int)((first100mW % 1000) / usedLineOffset);
if (KOffsetW < 0)
{
KOffsetW = 10 + KOffsetW;
}
int KOffsetH = (int)((first100mH % 1000) / usedLineOffset) - 1;
if (lineCount1000M > 1)
{
KOffsetH = lineCount1000M - KOffsetH;
}
for (double curX = offsetCW; curX < canvas.LocalClipBounds.Right; curX += screenWidthPerLine)
{
var worldPos = viewport.ScreenToWorld(curX, 0).X;
var Xgrid10KM = (uint)(worldPos / 10000) % 10;
var Xgrid1KM = (uint)(worldPos / 1000) % 10;
var Xgrid100m = (uint)(worldPos / 100) % 10;
//var Xgrid10m = (uint)(worldPos / 10) % 10;
string gridPosString;
if (usedLineOffsetInt == 1000)
{
gridPosString = $"{Xgrid10KM}{Xgrid1KM}";
}
else if (usedLineOffsetInt == 100)
{
gridPosString = $"{Xgrid10KM}{Xgrid1KM}{Xgrid100m}";
}
else
{
gridPosString = $"{Xgrid10KM}{Xgrid1KM}{Xgrid100m}{(uint)(worldPos / 10) % 10}";
}
SKPaint paint;
if (KOffsetW >= 1000 && KOffsetW % 1000 == 0)
{
paint = usedPaints.ElementAt(0);
}
if (KOffsetW >= 100 && KOffsetW % 100 == 0)
{
paint = usedPaints.ElementAt(2);
}
else if (KOffsetW >= 10 && KOffsetW % 10 == 0)
{
paint = usedPaints.ElementAt(1);
}
else
{
paint = usedPaints.ElementAt(0);
}
if (KOffsetW == lineCount1000M)
{
KOffsetW = 0;
}
canvas.DrawLine((float)curX, 0, (float)curX, canvas.LocalClipBounds.Height, paint);
using (var gtext = SKTextBlob.Create(gridPosString, markerFont))
canvas.DrawText(gtext, (float)(curX + screenWidthPerLine / 2) - gtext.Bounds.MidX,
20 + gtext.Bounds.MidY,
paint100m);
KOffsetW++;
}
for (double curH = offsetCH; curH < canvas.LocalClipBounds.Bottom; curH += screenHeightPerLine)
{
var worldPos = viewport.ScreenToWorld(0, curH).Y;
var Xgrid10KM = (uint)(worldPos / 10000) % 10;
var Xgrid1KM = (uint)(worldPos / 1000) % 10;
var Xgrid100m = (uint)(worldPos / 100) % 10;
//var Xgrid10m = (uint)(worldPos / 10) % 10;
string gridPosString;
if (usedLineOffsetInt == 1000)
{
gridPosString = $"{Xgrid10KM}{Xgrid1KM}";
}
else if (usedLineOffsetInt == 100)
{
gridPosString = $"{Xgrid10KM}{Xgrid1KM}{Xgrid100m}";
}
else
{
gridPosString = $"{Xgrid10KM}{Xgrid1KM}{Xgrid100m}{(uint)(worldPos / 10) % 10}";
}
SKPaint paint;
if (KOffsetH >= 100 && KOffsetH % 100 == 0)
{
paint = usedPaints.ElementAt(2);
}
else if (KOffsetH >= 10 && KOffsetH % 10 == 0)
{
paint = usedPaints.ElementAt(1);
}
else
{
paint = usedPaints.ElementAt(0);
}
if (KOffsetH == lineCount1000M)
{
KOffsetH = 0;
}
canvas.DrawLine(0, (float)curH, canvas.LocalClipBounds.Width, (float)curH, paint);
using (var gtext = SKTextBlob.Create(gridPosString, markerFont))
canvas.DrawText(gtext, 0,
(float)(curH + screenWidthPerLine / 2) - gtext.Bounds.MidY,
paint100m);
KOffsetH++;
}
}
private void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
SKImageInfo info = e.Info;
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear(SKColors.Silver);
canvas.Translate(info.Width / 2, info.Height / 2);
SKPaint paint = new SKPaint
{
IsAntialias = true,
Color = SKColors.Black,
StrokeWidth = 2
};
canvas.DrawLine(-info.Width / 2, 0, info.Width / 2, 0, paint);
canvas.DrawLine(0, -info.Height / 2, 0, info.Height / 2, paint);
SKPaint paintA = new SKPaint
{
IsAntialias = true,
Color = SKColors.Red,
Style = SKPaintStyle.Fill
};
SKPath pathA = new SKPath();
pathA.MoveTo(0, 0);
pathA.LineTo(0.1f * info.Width, -0.1f * info.Height);
pathA.LineTo(0.3f * info.Width, -0.2f * info.Height);
pathA.LineTo(0.5f * info.Width, -0.4f * info.Height);
pathA.LineTo(0, -0.5f * info.Height);
pathA.LineTo(-0.5f * info.Width, -0.4f * info.Height);
pathA.LineTo(-0.3f * info.Width, -0.2f * info.Height);
pathA.LineTo(-0.1f * info.Width, -0.1f * info.Height);
pathA.Close();
canvas.DrawPath(pathA, paintA);
//SKPaint paintB= new SKPaint
//{
// IsAntialias = true,
// Color = SKColors.Blue,
// Style = SKPaintStyle.Fill
//};
//SKPath pathB = new SKPath();
//pathB.MoveTo(0, 0);
//pathB.LineTo(info.Width / 8, -info.Height / 4);
//pathB.LineTo(0, -info.Height / 2);
//pathB.LineTo(-info.Width / 8, -info.Height / 4);
//pathB.Close();
//canvas.DrawPath(pathB, paintB);
}
public override void Line(double x1, double y1, double x2, double y2)
{
_skCanvas.DrawLine((float)x1, (float)y1, (float)x2, (float)y2, _stroke);
}
public override void DrawContent(SKCanvas canvas, int width, int height)
{
var total = this.Entries.Count();
if (total > 0)
{
var captionHeight = this.Entries.Max(x =>
{
var result = 0.0f;
var hasLabel = !string.IsNullOrEmpty(x.Label);
var hasValueLabel = !string.IsNullOrEmpty(x.ValueLabel);
if (hasLabel || hasValueLabel)
{
var hasOffset = hasLabel && hasValueLabel;
var captionMargin = this.LabelTextSize * 0.60f;
var space = hasOffset ? captionMargin : 0;
if (hasLabel)
{
result += this.LabelTextSize;
}
if (hasValueLabel)
{
result += this.LabelTextSize;
}
}
return(result);
});
var center = new SKPoint(width / 2, height / 2);
var radius = ((Math.Min(width, height) - (2 * Margin)) / 2) - captionHeight;
var rangeAngle = (float)((Math.PI * 2) / total);
var startAngle = (float)Math.PI;
var nextEntry = this.Entries.First();
var nextAngle = startAngle;
var nextPoint = this.GetPoint(nextEntry.Value, center, nextAngle, radius);
this.DrawBorder(canvas, center, radius);
for (int i = 0; i < total; i++)
{
var angle = nextAngle;
var entry = nextEntry;
var point = nextPoint;
var nextIndex = (i + 1) % total;
nextAngle = startAngle + (rangeAngle * nextIndex);
nextEntry = this.Entries.ElementAt(nextIndex);
nextPoint = this.GetPoint(nextEntry.Value, center, nextAngle, radius);
// Border center bars
using (var paint = new SKPaint()
{
Style = SKPaintStyle.Stroke,
StrokeWidth = this.BorderLineSize,
Color = this.BorderLineColor,
IsAntialias = true,
})
{
var borderPoint = this.GetPoint(this.MaxValue, center, angle, radius);
canvas.DrawLine(point.X, point.Y, borderPoint.X, borderPoint.Y, paint);
}
// Values points and lines
using (var paint = new SKPaint()
{
Style = SKPaintStyle.Stroke,
StrokeWidth = this.BorderLineSize,
Color = entry.Color.WithAlpha((byte)(entry.Color.Alpha * 0.75f)),
PathEffect = SKPathEffect.CreateDash(new[] { this.BorderLineSize, this.BorderLineSize * 2 }, 0),
IsAntialias = true,
})
{
var amount = Math.Abs(entry.Value - this.AbsoluteMinimum) / this.ValueRange;
canvas.DrawCircle(center.X, center.Y, radius * amount, paint);
}
canvas.DrawGradientLine(center, entry.Color.WithAlpha(0), point, entry.Color.WithAlpha((byte)(entry.Color.Alpha * 0.75f)), this.LineSize);
canvas.DrawGradientLine(point, entry.Color, nextPoint, nextEntry.Color, this.LineSize);
canvas.DrawPoint(point, entry.Color, this.PointSize, this.PointMode);
// Labels
var labelPoint = this.GetPoint(this.MaxValue, center, angle, radius + this.LabelTextSize + (this.PointSize / 2));
var alignment = SKTextAlign.Left;
if ((Math.Abs(angle - (startAngle + Math.PI)) < Epsilon) || (Math.Abs(angle - Math.PI) < Epsilon))
{
alignment = SKTextAlign.Center;
}
else if (angle > (float)(startAngle + Math.PI))
{
alignment = SKTextAlign.Right;
}
canvas.DrawCaptionLabels(entry.Label, entry.TextColor, entry.ValueLabel, entry.Color, this.LabelTextSize, labelPoint, alignment);
}
}
}
private void OnPaintSample(object sender, SkiaSharp.Views.Forms.SKPaintSurfaceEventArgs e)
{
surfaceWidth = e.Info.Width;
surfaceHeight = e.Info.Height;
myCanvas = e.Surface.Canvas;
float side = Math.Min(surfaceHeight, surfaceWidth) * 0.5f;
switch (_重繪狀態)
{
case 重繪狀態.第一次初始化:
myCanvas.Clear(Color.Gray.ToSKColor()); //paint it black
break;
case 重繪狀態.清除:
myCanvas.Clear(Color.Black.ToSKColor()); //paint it black
myCanvas.Clear(Color.Red.ToSKColor()); //paint it black
myCanvas.Clear(Color.Blue.ToSKColor()); //paint it black
myCanvas.Clear(Color.Gray.ToSKColor()); //paint it black
break;
case 重繪狀態.繪製點:
var foo = 1;
using (SKPaint paint = new SKPaint())
{
paint.Color = Color.FromHex("00FF00").ToSKColor();
paint.StrokeWidth = 5;
Random rm = new Random();
for (int i = 0; i < 3000; i++)
{
//myCanvas.DrawPoint(rm.Next(300), rm.Next(300), SKColor.Parse("#00eFF00"));
myCanvas.DrawPoint(rm.Next(surfaceWidth), rm.Next(surfaceHeight), paint);
}
}
break;
case 重繪狀態.收集資料:
using (SKPaint paint = new SKPaint())
{
paint.Color = Color.FromHex("FF0000").ToSKColor();
paint.StrokeWidth = 3;
Random rm = new Random();
for (int i = 0; i < surfaceWidth; i++)
{
var fooPM = rm.Next(10);
if (fooPM >= 5)
{
fooPM = -1;
}
else
{
fooPM = 1;
}
var fooY = surfaceHeight - (32 + i / 3 + (rm.Next(10) * fooPM));
var fooX = i;
myCanvas.DrawPoint(fooX, fooY, paint);
}
}
break;
case 重繪狀態.繪製線:
using (SKPaint paint = new SKPaint())
{
paint.Color = Color.Pink.ToSKColor();
paint.StrokeWidth = 7;
Random rm = new Random();
var fooPreX = 0;
var fooPreY = surfaceHeight - 100;
for (int i = 0; i < surfaceWidth / 10; i++)
{
var fooPM = rm.Next(13);
if (fooPM >= 5)
{
fooPM = -1;
}
else
{
fooPM = 1;
}
var fooY = surfaceHeight - (100 + i + (rm.Next(50) * fooPM));
var fooX = i * 10;
myCanvas.DrawLine(fooPreX, fooPreY, fooX, fooY, paint);
fooPreX = fooX;
fooPreY = fooY;
}
}
break;
default:
break;
}
return;
using (SKPaint paint = new SKPaint())
{
myCanvas.Clear(Color.Gray.ToSKColor()); //paint it black
SKRect r1 = new SKRect(10f, 20f, side, side);
paint.Color = Color.Blue.ToSKColor();
myCanvas.DrawRect(r1, paint);
paint.Color = Color.Red.ToSKColor();
myCanvas.DrawOval(r1, paint);
paint.Color = Color.FromHex("00FF00").ToSKColor();
paint.StrokeWidth = 5;
Random rm = new Random();
for (int i = 0; i < 3000; i++)
{
myCanvas.DrawPoint(rm.Next(300), rm.Next(300), paint);
//myCanvas.DrawPoint(rm.Next(300), rm.Next(300), SKColor.Parse("#00FF00"));
}
paint.Color = Color.Green.ToSKColor();
paint.TextSize = 64.0f;
paint.IsAntialias = true;
paint.Color = new SKColor(0x9C, 0xAF, 0xB7);
paint.IsStroke = true;
paint.StrokeWidth = 3;
paint.TextAlign = SKTextAlign.Center;
myCanvas.DrawText("這是Xamarin.Forms", 200f, 200f, paint);
myCanvas.DrawText("這是Xamarin.Forms", surfaceWidth / 2f, surfaceHeight / 2f, paint);
}
}
public SKData DrawHistogram(string referenceName, int zoom, int chunk)
{
var refer = _service._references.FirstOrDefault(r => r.Name == referenceName);
if (chunk == 0 && zoom == 10)
{
LoadReference(referenceName);
}
using var surface = SKSurface.Create(new SKImageInfo(refer.Length * zoom, 220));
using SKCanvas canvas = surface.Canvas;
canvas.Clear();
using SKPaint paint = new SKPaint
{
Style = SKPaintStyle.StrokeAndFill,
Color = SKColors.Blue,
StrokeWidth = 1
};
using SKPaint linePaint = new SKPaint
{
Style = SKPaintStyle.Stroke,
Color = SKColors.Black,
StrokeWidth = 1
};
using SKPaint dashPaint = new SKPaint
{
Style = SKPaintStyle.Stroke,
Color = SKColors.Black,
StrokeWidth = 1,
PathEffect = SKPathEffect.CreateDash(new[] { 20f, 5f }, 0)
};
var histData = _service._histograms[refer.Name];
var scale = (float)(100 / histData.Average());
for (int i = 0; i < refer.Length; i++)
{
canvas.DrawRect(i * zoom + 5, 200 - (histData[i] * scale), zoom, histData[i] * scale, paint);
}
canvas.DrawLine(5, 0, 5, 200, linePaint);
canvas.DrawLine(5, 199, refer.Length * zoom, 199, linePaint);
var average = (int)(Math.Round(histData.Average()));
canvas.DrawLine(5, average * scale, refer.Length * zoom, average * scale, dashPaint);
using SKPaint textPaint = new SKPaint
{
Style = SKPaintStyle.StrokeAndFill,
Color = SKColors.Black,
StrokeWidth = 1,
TextSize = 20,
Typeface = SKTypeface.FromFamilyName("Courier New"),
SubpixelText = true
};
canvas.DrawText(average.ToString(), 6, average * scale - 2, textPaint);
var cnt = textPaint.MeasureText("ACGT");
if (zoom == 10)
{
textPaint.TextSize = textPaint.TextSize * 40 / cnt;
var shaper = new SKShaper(SKTypeface.FromFamilyName("Courier New"));
canvas.DrawShapedText(shaper, reference, 5, 215, textPaint);
}
var width = (chunk + 1) * WIDTH * zoom > refer.Length * zoom ? refer.Length * zoom % WIDTH : WIDTH;
SKPixmap pixmap = surface.Snapshot().Subset(SKRectI.Create(chunk * WIDTH, 0, width, canvas.DeviceClipBounds.Height)).PeekPixels();
var options = new SKWebpEncoderOptions(SKWebpEncoderCompression.Lossless, 100);
return(pixmap.Encode(options));
}
/// <summary>
/// Creates a bitmap of the graph.
/// </summary>
/// <param name="Settings">Graph settings.</param>
/// <param name="States">State object(s) that contain graph-specific information about its inner states.
/// These can be used in calls back to the graph object to make actions on the generated graph.</param>
/// <returns>Bitmap</returns>
public override SKImage CreateBitmap(GraphSettings Settings, out object[] States)
{
using (SKSurface Surface = SKSurface.Create(Settings.Width, Settings.Height, SKImageInfo.PlatformColorType, SKAlphaType.Premul))
{
SKCanvas Canvas = Surface.Canvas;
States = new object[0];
Canvas.Clear(Settings.BackgroundColor);
int x1, y1, x2, y2, x3, y3, w, h;
x1 = Settings.MarginLeft;
x2 = Settings.Width - Settings.MarginRight;
y1 = Settings.MarginTop;
y2 = Settings.Height - Settings.MarginBottom;
if (!string.IsNullOrEmpty(this.labelY))
{
x1 += (int)(Settings.LabelFontSize * 2 + 0.5);
}
if (!string.IsNullOrEmpty(this.labelX))
{
y2 -= (int)(Settings.LabelFontSize * 2 + 0.5);
}
if (!string.IsNullOrEmpty(this.title))
{
y1 += (int)(Settings.LabelFontSize * 2 + 0.5);
}
IVector YLabels = GetLabels(ref this.minY, ref this.maxY, this.y, Settings.ApproxNrLabelsY, out LabelType YLabelType);
SKPaint Font = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
HintingLevel = SKPaintHinting.Full,
SubpixelText = true,
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = Settings.AxisColor,
Typeface = SKTypeface.FromFamilyName(Settings.FontName, SKTypefaceStyle.Normal),
TextSize = (float)Settings.LabelFontSize
};
float Size;
double MaxSize = 0;
if (this.showYAxis)
{
foreach (IElement Label in YLabels.ChildElements)
{
Size = Font.MeasureText(LabelString(Label, YLabelType));
if (Size > MaxSize)
{
MaxSize = Size;
}
}
}
x3 = (int)Math.Ceiling(x1 + MaxSize) + Settings.MarginLabel;
IVector XLabels = GetLabels(ref this.minX, ref this.maxX, this.x, Settings.ApproxNrLabelsX, out LabelType XLabelType);
MaxSize = 0;
if (this.showXAxis)
{
foreach (IElement Label in XLabels.ChildElements)
{
Size = Font.MeasureText(LabelString(Label, XLabelType));
if (Size > MaxSize)
{
MaxSize = Size;
}
}
}
y3 = (int)Math.Floor(y2 - MaxSize) - Settings.MarginLabel;
w = x2 - x3;
h = y3 - y1;
SKPaint AxisBrush = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = Settings.AxisColor
};
SKPaint GridBrush = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = Settings.GridColor
};
SKPaint AxisPen = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
IsAntialias = true,
Style = SKPaintStyle.Stroke,
Color = Settings.AxisColor,
StrokeWidth = Settings.AxisWidth
};
SKPaint GridPen = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
IsAntialias = true,
Style = SKPaintStyle.Stroke,
Color = Settings.GridColor,
StrokeWidth = Settings.GridWidth
};
double OrigoX;
double OrigoY;
if (this.minX.AssociatedSet is IAbelianGroup AgX)
{
OrigoX = Scale(new ObjectVector(AgX.AdditiveIdentity), this.minX, this.maxX, x3, w)[0];
}
else
{
OrigoX = 0;
}
if (this.minY.AssociatedSet is IAbelianGroup AgY)
{
OrigoY = Scale(new ObjectVector(AgY.AdditiveIdentity), this.minY, this.maxY, y3, -h)[0];
}
else
{
OrigoY = 0;
}
DrawingArea DrawingArea = new DrawingArea(this.minX, this.maxX, this.minY, this.maxY, x3, y3, w, -h, (float)OrigoX, (float)OrigoY);
double[] LabelYY = DrawingArea.ScaleY(YLabels);
int i = 0;
float f;
string s;
foreach (IElement Label in YLabels.ChildElements)
{
Size = Font.MeasureText(s = LabelString(Label, YLabelType));
f = (float)LabelYY[i++];
if (this.showGrid)
{
if (Label is DoubleNumber && ((DoubleNumber)Label).Value == 0)
{
Canvas.DrawLine(x3, f, x2, f, AxisPen);
}
else
{
Canvas.DrawLine(x3, f, x2, f, GridPen);
}
}
if (this.showYAxis)
{
f += (float)Settings.LabelFontSize * 0.5f;
Canvas.DrawText(s, x3 - Size - Settings.MarginLabel, f, Font);
}
}
double[] LabelXX = DrawingArea.ScaleX(XLabels);
i = 0;
foreach (IElement Label in XLabels.ChildElements)
{
Size = Font.MeasureText(s = LabelString(Label, XLabelType));
f = (float)LabelXX[i++];
if (this.showGrid)
{
if (Label is DoubleNumber && ((DoubleNumber)Label).Value == 0)
{
Canvas.DrawLine(f, y1, f, y3, AxisPen);
}
else
{
Canvas.DrawLine(f, y1, f, y3, GridPen);
}
}
if (this.showXAxis)
{
f -= Size * 0.5f;
if (f < x3)
{
f = x3;
}
else if (f + Size > x3 + w)
{
f = x3 + w - Size;
}
Canvas.DrawText(s, f, y3 + Settings.MarginLabel + (float)Settings.LabelFontSize, Font);
}
}
Font.Dispose();
Font = null;
Font = new SKPaint()
{
FilterQuality = SKFilterQuality.High,
HintingLevel = SKPaintHinting.Full,
SubpixelText = true,
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = Settings.AxisColor,
Typeface = SKTypeface.FromFamilyName(Settings.FontName, SKTypefaceStyle.Bold),
TextSize = (float)(Settings.LabelFontSize * 1.5)
};
if (!string.IsNullOrEmpty(this.title))
{
Size = Font.MeasureText(this.title);
f = x3 + (x2 - x3 - Size) * 0.5f;
if (f < x3)
{
f = x3;
}
else if (f + Size > x3 + w)
{
f = x3 + w - Size;
}
Canvas.DrawText(this.title, f, (float)(Settings.MarginTop + 1.5 * Settings.LabelFontSize), Font);
}
if (!string.IsNullOrEmpty(this.labelX))
{
Size = Font.MeasureText(this.labelX);
f = x3 + (x2 - x3 - Size) * 0.5f;
if (f < x3)
{
f = x3;
}
else if (f + Size > x3 + w)
{
f = x3 + w - Size;
}
Canvas.DrawText(this.labelX, f, (float)(y2 + 0.45 * Settings.LabelFontSize), Font);
}
if (!string.IsNullOrEmpty(this.labelY))
{
Size = Font.MeasureText(this.labelY);
f = y3 - (y3 - y1 - Size) * 0.5f;
if (f - Size < y1)
{
f = y1 + Size;
}
else if (f > y3 + h)
{
f = y3 + h;
}
Canvas.Translate((float)(Settings.MarginLeft + 0.05 * Settings.LabelFontSize), f);
Canvas.RotateDegrees(-90);
Canvas.DrawText(this.labelY, 0, 0, Font);
Canvas.ResetMatrix();
}
IEnumerator <IVector> ex = this.x.GetEnumerator();
IEnumerator <IVector> ey = this.y.GetEnumerator();
IEnumerator <object[]> eParameters = this.parameters.GetEnumerator();
IEnumerator <DrawCallback> eCallbacks = this.callbacks.GetEnumerator();
SKPoint[] Points;
SKPoint[] PrevPoints = null;
object[] PrevParameters = null;
DrawCallback PrevCallback = null;
while (ex.MoveNext() && ey.MoveNext() && eParameters.MoveNext() && eCallbacks.MoveNext())
{
Points = DrawingArea.Scale(ex.Current, ey.Current);
if (PrevCallback != null && eCallbacks.Current.Target.GetType() == PrevCallback.Target.GetType())
{
eCallbacks.Current(Canvas, Points, eParameters.Current, PrevPoints, PrevParameters, DrawingArea);
}
else
{
eCallbacks.Current(Canvas, Points, eParameters.Current, null, null, DrawingArea);
}
PrevPoints = Points;
PrevParameters = eParameters.Current;
PrevCallback = eCallbacks.Current;
}
SKImage Result = Surface.Snapshot();
if (Font != null)
{
Font.Dispose();
}
AxisBrush.Dispose();
GridBrush.Dispose();
GridPen.Dispose();
AxisPen.Dispose();
States = new object[] { DrawingArea };
return(Result);
}
}
//METHODS
/**********************************************************************
*********************************************************************/
// do the drawing
static void PaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
info = e.Info;
var surfaceWidth = info.Width;
var surfaceHeight = info.Height;
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
if (canvas != null)
{
canvas.Clear(); //Important! Otherwise the drawing will look messed up in iOS
}
/*important: the coordinate system starts in the upper left corner*/
float lborder = canvas.LocalClipBounds.Left;
float tborder = canvas.LocalClipBounds.Top;
float rborder = canvas.LocalClipBounds.Right;
float bborder = canvas.LocalClipBounds.Bottom;
xe = rborder / 100; //using the variable surfacewidth instead would mess everything up
ye = bborder / 100;
MakeSKPaint(); //depends on xe and ye and therfore has to be called after they were initialized
/*********************HERE GOES THE DRAWING************************/
//draw background for ram and disc: pink and yellow
float bgRamY1 = 1 + rowWidth;
float bgRamY2 = bgRamY1 + (rowWidth * ramSize);
float bgDiscY1 = bgRamY2;
float bgDiscY2 = bgDiscY1 + (rowWidth * discSize);
SKRect sk_rBackgroundRam = new SKRect(1 * xe, bgRamY1 * ye, 99 * xe, bgRamY2 * ye); //left , top, right, bottom
SKRect sk_rBackgroundDisc = new SKRect(1 * xe, bgDiscY1 * ye, 99 * xe, bgDiscY2 * ye); //left , top, right, bottom
canvas.DrawRect(sk_rBackgroundRam, sk_PaintYellow); //left, top, right, bottom, color
canvas.DrawRect(sk_rBackgroundDisc, sk_PaintPink);
//draw the words RAM and DISC
float blackTextSize = sk_blackText.TextSize;
float posTexty = (0.5f + rowWidth + (rowWidth / 2.0f)) * ye + (blackTextSize / 2.0f); // ye is already calculated in blacktextsize
float posTextx = columnCenter * xe + xe; //its already centered when specified in new SKPaint (...
for (int i = 0; i < ramSize; i++)
{
canvas.DrawText("RAM", posTextx, posTexty, sk_blackText);
posTexty += rowWidth * ye;
}
for (int i = 0; i < discSize; i++)
{
canvas.DrawText(App._disk, posTextx, posTexty, sk_blackText);
posTexty += rowWidth * ye;
}
//draw the page sequence
float blackTextNumbersSize = sk_blackTextNumbers.TextSize;
float posTexty2 = ((rowWidth / 2.0f)) * ye + (blackTextNumbersSize / 2.0f) - 0.4f * ye;
float posTextx2 = (1 + columnCenter + columnWidth) * xe;
foreach (var p in SequenceList)
{
canvas.DrawText(p.ToString(), posTextx2, posTexty2, sk_blackTextNumbers);
posTextx2 += columnWidth * xe;
}
//prepare a square
float posPFX1 = 1 + columnWidth; // 1 + columnWidth + (columnWidth / 6) * 1;
float posPFX2 = posPFX1 + columnWidth; // posPFX1 + (columnWidth / 6) * 4;
float posPFY1 = 1 + rowWidth; //1 + rowWidth + (rowWidth / 10) * 1;
float posPFY2 = posPFY1 + rowWidth; // posPFY1 + (rowWidth / 10) * 8;
//prepare a circle
float radius = 0;
float cx = 1 + columnWidth + columnCenter;
float cy = 1 + rowWidth + rowCenter;
//if (rowWidth > columnWidth){ radius = columnWidth / 2.6f * xe;}
//else{ radius = rowWidth / 2.2f * ye;}
radius = xPercent(0.025f);
//draw pagefails
for (int step = 0; step <= PageReplacementStrategies.currentStep; step++)
{
if (PageReplacementStrategies.ram[step, 0, 3] == 2)
{
//with replacement(circle)
canvas.DrawCircle(cx * xe, cy * ye, radius, sk_PaintWhite); //center x, center y, radius, paint
canvas.DrawCircle(cx * xe, cy * ye, radius, sk_PaintBlue); //center x, center y, radius,
}
else if (PageReplacementStrategies.ram[step, 0, 3] == 1)
{
//without replacement (square)
//SKRect sk_Pagefail = new SKRect(posPFX1 * xe, posPFY1 * ye, posPFX2 * xe, posPFY2 * ye); //left , top, right, bottom
SKRect sk_Pagefail = new SKRect(posPFX1 * xe, posPFY1 * ye, posPFX2 * xe, posPFY2 * ye); //left , top, right,
canvas.DrawRect(sk_Pagefail, sk_PaintWhite); //left, top, right, bottom, color
canvas.DrawRect(sk_Pagefail, sk_PaintBlue); //left, top, right, bottom, color
}
posPFX1 += columnWidth;
posPFX2 = posPFX1 + columnWidth;// posPFX1 + (columnWidth / 6) * 4;
cx += columnWidth;
}
//draw Ram: for every step thats done yet, look for pages in ram
float posXText = (1 + columnCenter + columnWidth) * xe;
float posYText = (rowWidth + (rowWidth / 2.0f)) * ye + (blackTextNumbersSize / 2.0f);
for (int step = 0; step <= PageReplacementStrategies.currentStep; step++)
{
for (int ram = 0; ram <= PageReplacementStrategies.ram.GetUpperBound(1); ram++)
{
int page = PageReplacementStrategies.ram[step, ram, 0];
if (page != -1)
{
canvas.DrawText(page.ToString(), posXText, posYText, sk_blackTextNumbers);
}
posYText += rowWidth * ye;
}
posYText = (rowWidth + (rowWidth / 2.0f)) * ye + (blackTextNumbersSize / 2.0f);
posXText += columnWidth * xe;
}
//draw Disc: for evry step thats done yet, look for pages in disc
posXText = (1 + columnCenter + columnWidth) * xe;
posYText += rowWidth * ye;
for (int step = 0; step <= PageReplacementStrategies.currentStep; step++)
{
for (int disc = 0; disc <= PageReplacementStrategies.disc.GetUpperBound(1); disc++)
{
int page = PageReplacementStrategies.disc[step, disc];
if (page != -1)
{
canvas.DrawText(page.ToString(), posXText, posYText, sk_blackTextNumbers);
}
posYText += rowWidth * ye;
}
posYText = (rowWidth * (ramSize + 1) + (rowWidth / 2.0f)) * ye + (blackTextNumbersSize / 2.0f);
posXText += columnWidth * xe;
}
//draw M-Bits and R-Bits
float posXbit = (1 + columnWidth + columnCenter - columnCenter / 2) * xe;
float blackTextSmallSize = sk_blackTextSmall.TextSize;
float blankSpace = rowWidth * ye - blackTextSmallSize * 2.000f;
if (blankSpace < 0.000f)
{
blankSpace = 0.000f;
}
float spaceY = blankSpace / 3.0000f;
float posYRbit = 0.4f * ye + rowWidth * ye + spaceY + blackTextSmallSize;
float posYMbit = 0.4f * ye + rowWidth * ye + spaceY + blackTextSmallSize + spaceY + blackTextSmallSize;
if (PageReplacementStrategies.strategy == "RNU FIFO Second Chance" || PageReplacementStrategies.strategy == "RNU FIFO")
{
for (int step = 0; step <= PageReplacementStrategies.currentStep; step++)
{
for (int ram = 0; ram <= PageReplacementStrategies.ram.GetUpperBound(1); ram++)
{
if (PageReplacementStrategies.ram[step, ram, 0] != -1)
{
String rBitValue = PageReplacementStrategies.ram[step, ram, 1].ToString();
String mBitValue = PageReplacementStrategies.ram[step, ram, 2].ToString();
if (PageReplacementStrategies.ram[step, ram, 4] == 0)
{
canvas.DrawText(rBitValue, posXbit, posYRbit, sk_blackTextSmall);
}
else
{
canvas.DrawText(rBitValue, posXbit, posYRbit, sk_redTextSmall);
}
if (PageReplacementStrategies.ram[step, ram, 5] == 0)
{
canvas.DrawText(mBitValue, posXbit, posYMbit, sk_blackTextSmall);
}
else
{
canvas.DrawText(mBitValue, posXbit, posYMbit, sk_redTextSmall);
}
}
posYMbit += rowWidth * ye;
posYRbit += rowWidth * ye;
}
posXbit += columnWidth * xe;
posYMbit = 0.4f * ye + rowWidth * ye + spaceY + blackTextSmallSize + spaceY + blackTextSmallSize;
posYRbit = 0.4f * ye + rowWidth * ye + spaceY + blackTextSmallSize;
}
}
//Draw rows and colums
float posCol = 1;
for (int i = 0; i <= colums; i++)
{
if (i == 0 || i == 1 || i == colums)
{ //first, second and last line is fat
canvas.DrawLine(new SKPoint(posCol * xe, 1 * ye), new SKPoint(posCol * xe, 99 * ye), sk_PaintFat);
}
else
{
canvas.DrawLine(new SKPoint(posCol * xe, 1 * ye), new SKPoint(posCol * xe, 99 * ye), sk_PaintThin);
}
posCol += columnWidth;
}
float posRow = 1;
for (int i = 0; i <= rows; i++)
{
if (i == 0 || i == 1 || i == rows || i == ramSize + 1)
{ //first, second and last line is fat, also the seperating line between ram and disc
canvas.DrawLine(new SKPoint(1 * xe, posRow * ye), new SKPoint(99 * xe, posRow * ye), sk_PaintFat);
}
else
{
canvas.DrawLine(new SKPoint(1 * xe, posRow * ye), new SKPoint(99 * xe, posRow * ye), sk_PaintThin);
}
posRow += rowWidth;
}
//execute all drawing actions
canvas.Flush();
}
public static (bool newRow, int usedWidth) DrawLine(SKCanvas canvas, SKBitmap bitmap, List <SKPoint> points, SKPaint paint, int size = 6, string text = "", int labelRow = 0, int labelXOffset = 0, bool drawPoint = false, float labelYHeight = -1, SKBitmap bitmapIcon = null)
{
bool newRow = false;
if (paint == null)
{
paint = new SKPaint()
{
Color = WhiteColor
}
}
;
// Dont fill the rectangles
paint.Style = SKPaintStyle.Stroke;
int xOffset = 120; // TODO maybe trough padding
float usedLabelWidth = paint.MeasureText(text) + 70 /* buffer */;
if (xOffset + labelXOffset + usedLabelWidth > bitmap.Width)
{
labelRow++;
labelXOffset = 0;
newRow = true;
}
if (points.Count == 0)
{
return(false, -1);
}
SKPoint prevPoint = points.First();
foreach (var point in points)
{
if (drawPoint)
{
canvas.DrawRect(new SKRect(point.X - size / 2, point.Y - size / 2, point.X + size / 2, point.Y + size / 2), paint);
}
canvas.DrawLine(prevPoint, point, paint);
prevPoint = point;
}
// draw Legend
int height = bitmap.Height;
int yOffset = 25; // TODO Make padding depending
int iconDist = 20;
var textPaint = MediumTextPaint;
int yBase = height - yOffset - (int)textPaint.TextSize / 2 + labelRow * 20;
int xBase = xOffset + labelXOffset;
if (drawPoint)
{
canvas.DrawRect(new SKRect(xBase - size / 2 - iconDist / 2, yBase - size / 2, xBase + size / 2 - iconDist / 2, yBase + size / 2), paint);
}
canvas.DrawLine(new SKPoint(xBase - iconDist, yBase), new SKPoint(xBase, yBase), paint);
canvas.DrawText(text, new SKPoint(xBase + 5, yBase + size), textPaint); // TODO Correct paint?
if (labelYHeight > 0)
{
var specialPaint = textPaint;
specialPaint.Color = paint.Color;
canvas.DrawText(text, new SKPoint(bitmap.Width - 140 /* TODO dynamic trough padding */, labelYHeight), specialPaint); // TODO Correct paint?
if (bitmapIcon != null)
{
canvas.DrawBitmap(bitmapIcon, new SKPoint(bitmap.Width - 140 /* TODO dynamic trough padding */, labelYHeight));
}
}
return(newRow, (int)usedLabelWidth);
}
private void DrawAxes()
{
bool VerticalOrientation = this.canvasView.Width < this.canvasView.Height ? true : false;
SKCanvas canvas = this.fullPlotSurface.Canvas;
SKPaint yAxisUnitPaint = new SKPaint
{
Color = SKColors.Gray,
TextAlign = SKTextAlign.Right,
IsAntialias = true,
TextSize = 14f
};
SKPaint refLinePaint = new SKPaint
{
Color = SKColors.LightGray,
Style = SKPaintStyle.Stroke,
StrokeWidth = 1f,
PathEffect = SKPathEffect.CreateDash(new float[] { 6f, 3f }, 0),
IsAntialias = true
};
//draw y axis
float gridBottomX = this.gridPosX;
float gridBottomY = this.gridHeight;
for (float UVNum = minY; UVNum <= maxY; ++UVNum)
{
float unitsFromGridBottom = UVNum * this.unitsPerUVLevel;
float curUVPointX = gridBottomX;
float curUVPointY = gridBottomY - unitsFromGridBottom;
if (VerticalOrientation)
{
// draw line
canvas.DrawLine(curUVPointX, curUVPointY, (float)this.canvasView.Width, curUVPointY, refLinePaint);
}
if (UVNum % this.deltaY == 0f || UVNum == 0f)
{
// write text at each reference point
float paddingX = 5f;
float paddingY = (yAxisUnitPaint.TextSize * 0.3f);
canvas.DrawText(UVNum.ToString(), curUVPointX - paddingX, curUVPointY + paddingY, yAxisUnitPaint);
// draw line
canvas.DrawLine(curUVPointX, curUVPointY, (float)this.canvasView.Width, curUVPointY, refLinePaint);
}
}
SKPaint axisLabelPaint = new SKPaint
{
Color = SKColors.Gray,
TextAlign = SKTextAlign.Center,
IsAntialias = true,
TextSize = 18f
};
float verAxisPosX = axisLabelPaint.TextSize * 0.8f;
float verAxisPosY = gridBottomY / 2f;
canvas.Save();
canvas.RotateDegrees(-90, verAxisPosX, verAxisPosY);
canvas.DrawText("UV Level", verAxisPosX, verAxisPosY, axisLabelPaint);
canvas.Restore();
SKPaint timeAxisMarks = new SKPaint
{
Color = SKColors.LightGray,
Style = SKPaintStyle.Stroke,
StrokeWidth = 1f,
IsAntialias = true
};
SKPaint xAxisUnitPaint = new SKPaint
{
Color = SKColors.Gray,
TextAlign = SKTextAlign.Center,
IsAntialias = true,
TextSize = 14f
};
//for each x mark
for (TimeSpan timeValue = minX; timeValue <= maxX; timeValue = timeValue.Add(TimeSpan.FromHours(1.0d)))
{
int hourValue = timeValue.Hours;
int minuteValue = timeValue.Minutes;
string timeText = hourValue.ToString() + ":" + minuteValue.ToString("D2");
float displacementFromBottom = (float)(timeValue.TotalMinutes - minX.TotalMinutes) * this.unitsPerMinute;
float curTimePointX = gridBottomX + displacementFromBottom;
float curTimePointY = gridBottomY;
float markLength = 5f;
if (timeValue.TotalMinutes % this.deltaX.TotalMinutes == 0)
{
//major mark
markLength = 10f;
canvas.DrawText(timeText, curTimePointX, curTimePointY + (paddingHeight), xAxisUnitPaint);
}
canvas.DrawLine(curTimePointX, curTimePointY, curTimePointX, curTimePointY + markLength, timeAxisMarks);
}
}
public override void DrawContent(SKCanvas canvas, int width, int height)
{
var total = Entries?.Count() ?? 0;
if (total > 0)
{
var captionHeight = Entries.Max(x =>
{
var result = 0.0f;
var hasLabel = !string.IsNullOrEmpty(x.Label);
var hasValueLabel = !string.IsNullOrEmpty(x.ValueLabel);
if (hasLabel || hasValueLabel)
{
var hasOffset = hasLabel && hasValueLabel;
var captionMargin = LabelTextSize * 0.60f;
var space = hasOffset ? captionMargin : 0;
if (hasLabel)
{
result += LabelTextSize;
}
if (hasValueLabel)
{
result += LabelTextSize;
}
}
return(result);
});
var center = new SKPoint(width / 2, height / 2);
var radius = ((Math.Min(width, height) - (2 * Margin)) / 2) - captionHeight;
var rangeAngle = (float)((Math.PI * 2) / total);
var startAngle = (float)Math.PI;
var nextEntry = Entries.First();
var nextAngle = startAngle;
var nextPoint = GetPoint(nextEntry.Value * AnimationProgress, center, nextAngle, radius);
DrawBorder(canvas, center, radius);
using (var clip = new SKPath())
{
clip.AddCircle(center.X, center.Y, radius);
for (int i = 0; i < total; i++)
{
var angle = nextAngle;
var entry = nextEntry;
var point = nextPoint;
var nextIndex = (i + 1) % total;
nextAngle = startAngle + (rangeAngle * nextIndex);
nextEntry = Entries.ElementAt(nextIndex);
nextPoint = GetPoint(nextEntry.Value * AnimationProgress, center, nextAngle, radius);
canvas.Save();
canvas.ClipPath(clip);
// Border center bars
using (var paint = new SKPaint()
{
Style = SKPaintStyle.Stroke,
StrokeWidth = BorderLineSize,
Color = BorderLineColor,
IsAntialias = true,
})
{
var borderPoint = GetPoint(MaxValue, center, angle, radius);
canvas.DrawLine(point.X, point.Y, borderPoint.X, borderPoint.Y, paint);
}
// Values points and lines
using (var paint = new SKPaint()
{
Style = SKPaintStyle.Stroke,
StrokeWidth = BorderLineSize,
Color = entry.Color.WithAlpha((byte)(entry.Color.Alpha * 0.75f * AnimationProgress)),
PathEffect = SKPathEffect.CreateDash(new[] { BorderLineSize, BorderLineSize * 2 }, 0),
IsAntialias = true,
})
{
var amount = Math.Abs(entry.Value - AbsoluteMinimum) / ValueRange;
canvas.DrawCircle(center.X, center.Y, radius * amount, paint);
}
canvas.DrawGradientLine(center, entry.Color.WithAlpha(0), point, entry.Color.WithAlpha((byte)(entry.Color.Alpha * 0.75f)), LineSize);
canvas.DrawGradientLine(point, entry.Color, nextPoint, nextEntry.Color, LineSize);
canvas.DrawPoint(point, entry.Color, PointSize, PointMode);
canvas.Restore();
// Labels
var labelPoint = new SKPoint(0, radius + LabelTextSize + (PointSize / 2));
var rotation = SKMatrix.CreateRotation(angle);
labelPoint = center + rotation.MapPoint(labelPoint);
var alignment = SKTextAlign.Left;
if ((Math.Abs(angle - (startAngle + Math.PI)) < Epsilon) || (Math.Abs(angle - Math.PI) < Epsilon))
{
alignment = SKTextAlign.Center;
}
else if (angle > (float)(startAngle + Math.PI))
{
alignment = SKTextAlign.Right;
}
canvas.DrawCaptionLabels(entry.Label, entry.TextColor, TextDirection, LabelTextSpacing, entry.ValueLabel, entry.Color.WithAlpha((byte)(255 * AnimationProgress)), LabelTextSize, labelPoint, alignment, base.Typeface, out var _);
}
}
}
}
public void DrawLine(IPen pen, CanvasPoint p1, CanvasPoint p2)
{
_canvas?.DrawLine(p1.ToSKPoint(), p2.ToSKPoint(), GetSKPaint(pen));
}
public void DrawLine(Pen pen, float x1, float y1, float x2, float y2)
{
_image.DrawLine(x1, y1, x2, y2, pen.SKPaint());
}