private void DrawTicks(Layout layout, Axes axes, SKCanvas canvas)
{
// TODO: this tick drawing code is just a placeholder.
float tickLength = 3;
left.GenerateTicks(axes.y.low, axes.y.high, layout.scaleLeft.Height, 40);
for (int i = 0; i < left.tickPositions.Length; i++)
{
float yPos = axes.GetPixel(0, left.tickPositions[i]).Y;
SKPoint tickRight = new SKPoint(layout.scaleLeft.Right, yPos);
SKPoint tickLeft = new SKPoint(layout.scaleLeft.Right - tickLength, yPos);
canvas.DrawLine(tickLeft, tickRight, left.paint);
SKPaint paint = left.paint;
paint.TextAlign = SKTextAlign.Right;
canvas.DrawText(left.tickLabels[i], tickLeft.X, yPos, paint);
}
right.GenerateTicks(axes.y.low, axes.y.high, layout.scaleRight.Height, 40);
for (int i = 0; i < right.tickPositions.Length; i++)
{
float yPos = axes.GetPixel(0, right.tickPositions[i]).Y;
SKPoint tickRight = new SKPoint(layout.scaleRight.Left + tickLength, yPos);
SKPoint tickLeft = new SKPoint(layout.scaleRight.Left, yPos);
canvas.DrawLine(tickLeft, tickRight, right.paint);
SKPaint paint = left.paint;
paint.TextAlign = SKTextAlign.Left;
canvas.DrawText(right.tickLabels[i], tickRight.X, yPos, paint);
}
bottom.GenerateTicks(axes.x.low, axes.x.high, layout.scaleBottom.Width, 80);
for (int i = 0; i < bottom.tickPositions.Length; i++)
{
float xPos = axes.GetPixel(bottom.tickPositions[i], 0).X;
SKPoint tickTop = new SKPoint(xPos, layout.scaleBottom.Top);
SKPoint tickBottom = new SKPoint(xPos, layout.scaleBottom.Top + tickLength);
canvas.DrawLine(tickTop, tickBottom, bottom.paint);
SKPaint paint = left.paint;
paint.TextAlign = SKTextAlign.Center;
canvas.DrawText(bottom.tickLabels[i], xPos, tickBottom.Y + bottom.paint.TextSize, paint);
}
top.GenerateTicks(axes.x.low, axes.x.high, layout.scaleTop.Width, 80);
for (int i = 0; i < top.tickPositions.Length; i++)
{
float xPos = axes.GetPixel(top.tickPositions[i], 0).X;
SKPoint tickTop = new SKPoint(xPos, layout.scaleTop.Bottom - tickLength);
SKPoint tickBottom = new SKPoint(xPos, layout.scaleTop.Bottom);
canvas.DrawLine(tickTop, tickBottom, top.paint);
SKPaint paint = left.paint;
paint.TextAlign = SKTextAlign.Center;
canvas.DrawText(top.tickLabels[i], xPos, tickTop.Y - 2, paint);
}
}
private void RenderLeft(SKCanvas canvas, Axes axes)
{
SKPaint paintTick = new SKPaint()
{
IsAntialias = true,
TextSize = 12,
TextAlign = SKTextAlign.Right,
Color = SKColor.Parse("#FF000000")
};
SKPaint paintGrid = new SKPaint()
{
IsAntialias = true,
Color = SKColor.Parse("#33000000")
};
SKRect dataRect = axes.GetDataRect();
foreach (Tick tick in ticks)
{
if ((tick.value >= axes.y.low) && (tick.value <= axes.y.high))
{
float yPixel = axes.GetPixel(0, tick.value).Y;
SKPoint dataLeft = new SKPoint(dataRect.Left, yPixel);
SKPoint dataRight = new SKPoint(dataRect.Right, yPixel);
SKPoint tickLeft = new SKPoint(dataRect.Left - length, yPixel);
canvas.DrawLine(tickLeft, dataLeft, paintTick);
canvas.DrawText(tick.label, tickLeft.X - 3, yPixel + paintTick.TextSize * 0.35f, paintTick);
canvas.DrawLine(dataLeft, dataRight, paintGrid);
}
}
}
private void RenderBottom(SKCanvas canvas, Axes axes)
{
SKPaint paintTick = new SKPaint()
{
IsAntialias = true,
TextSize = 12,
TextAlign = SKTextAlign.Center,
Color = SKColor.Parse("#FF000000")
};
SKPaint paintGrid = new SKPaint()
{
IsAntialias = true,
Color = SKColor.Parse("#33000000")
};
SKRect dataRect = axes.GetDataRect();
foreach (Tick tick in ticks)
{
if ((tick.value >= axes.x.low) && (tick.value <= axes.x.high))
{
float xPixel = axes.GetPixel(tick.value, 0).X;
SKPoint dataTop = new SKPoint(xPixel, dataRect.Top);
SKPoint dataBot = new SKPoint(xPixel, dataRect.Bottom);
SKPoint tickBot = new SKPoint(xPixel, dataRect.Bottom + length);
canvas.DrawLine(dataBot, tickBot, paintTick);
canvas.DrawText(tick.label, xPixel, tickBot.Y + paintTick.TextSize, paintTick);
canvas.DrawLine(dataBot, dataTop, paintGrid);
}
}
}
private void RenderLeft(SKCanvas canvas, Axes axes)
{
var yTickPaint = new SKPaint()
{
IsAntialias = true,
TextSize = 12,
TextAlign = SKTextAlign.Right,
Color = yTickColor
};
var gridPaint = new SKPaint()
{
IsAntialias = true,
Color = gridColor
};
SKRect dataRect = axes.GetDataRect();
foreach (Tick tick in ticks)
{
if ((tick.value >= axes.y.low) && (tick.value <= axes.y.high))
{
float yPixel = axes.GetPixel(0, tick.value).Y;
SKPoint dataLeft = new SKPoint(dataRect.Left, yPixel);
SKPoint dataRight = new SKPoint(dataRect.Right, yPixel);
SKPoint tickLeft = new SKPoint(dataRect.Left - length, yPixel);
canvas.DrawLine(tickLeft, dataLeft, yTickPaint);
canvas.DrawText(tick.label, tickLeft.X - 3, yPixel + yTickPaint.TextSize * 0.35f, yTickPaint);
canvas.DrawLine(dataLeft, dataRight, gridPaint);
}
}
}
private void RenderBottom(SKCanvas canvas, Axes axes)
{
var xTickPaint = new SKPaint()
{
IsAntialias = true,
TextSize = 12,
TextAlign = SKTextAlign.Center,
Color = xTickColor
};
var gridPaint = new SKPaint()
{
IsAntialias = true,
Color = gridColor
};
SKRect dataRect = axes.GetDataRect();
foreach (Tick tick in ticks)
{
if ((tick.value >= axes.x.low) && (tick.value <= axes.x.high))
{
float xPixel = axes.GetPixel(tick.value, 0).X;
SKPoint dataTop = new SKPoint(xPixel, dataRect.Top);
SKPoint dataBot = new SKPoint(xPixel, dataRect.Bottom);
SKPoint tickBot = new SKPoint(xPixel, dataRect.Bottom + length);
canvas.DrawLine(dataBot, tickBot, xTickPaint);
canvas.DrawText(tick.label, xPixel, tickBot.Y + xTickPaint.TextSize, xTickPaint);
canvas.DrawLine(dataBot, dataTop, gridPaint);
}
}
}
private void RenderLeft(Graphics gfx, Axes axes)
{
RectangleF dataRect = axes.GetDataRect();
StringFormat sf = Tools.StringFormat(Tools.AlignHoriz.right, Tools.AlignVert.center);
foreach (Tick tick in ticks)
{
if ((tick.value >= axes.y.low) && (tick.value <= axes.y.high))
{
float yPixel = axes.GetPixel(0, tick.value).Y;
gfx.DrawLine(Pens.LightGray, dataRect.Left, yPixel, dataRect.Right, yPixel);
gfx.DrawLine(Pens.Black, dataRect.Left, yPixel, dataRect.Left - length, yPixel);
gfx.DrawString(tick.label, font, brush, new PointF(dataRect.Left - length, yPixel), sf);
}
}
}
private void RenderBottom(Graphics gfx, Axes axes)
{
RectangleF dataRect = axes.GetDataRect();
StringFormat sf = Tools.StringFormat(Tools.AlignHoriz.center, Tools.AlignVert.top);
foreach (Tick tick in ticks)
{
if ((tick.value >= axes.x.low) && (tick.value <= axes.x.high))
{
float xPixel = axes.GetPixel(tick.value, 0).X;
gfx.DrawLine(Pens.LightGray, xPixel, dataRect.Bottom, xPixel, dataRect.Top);
gfx.DrawLine(Pens.Black, xPixel, dataRect.Bottom, xPixel, dataRect.Bottom + length);
gfx.DrawString(tick.label, font, brush, new PointF(xPixel, dataRect.Bottom + length), sf);
}
}
}