private void GraphGrid_PaintSurface(object sender, SkiaSharp.Views.Desktop.SKPaintSurfaceEventArgs e)
{
GridSurface = e.Surface;
GridCanvas = GridSurface.Canvas;
GridCanvas.Clear(SKColors.White);
if (GridYEnabled)
{
// draw y grid lines
pixelsPerUnitY = graphGrid.CanvasSize.Height / (GridYMax - GridYMin);
float stepSizeY = GridYStep;
float gridYText = GridYMax;
for (float y = 0; y <= graphGrid.CanvasSize.Height; y += (stepSizeY * pixelsPerUnitY))
{
GridCanvas.DrawLine(0, y, graphGrid.CanvasSize.Width, y, GridPaint1);
GridCanvas.DrawText(gridYText.ToString(), 5, y - 5, GridText1);
gridYText -= stepSizeY;
}
}
if (GridXEnabled)
{
// draw x grid lines
float pixelsPerUnitX = graphGrid.CanvasSize.Width / (GridXMax - GridXMin);
float stepSizeX = GridXStep;
for (float x = 0; x <= graphGrid.CanvasSize.Width; x += (stepSizeX * pixelsPerUnitX))
{
GridCanvas.DrawLine(x, 0, x, graphGrid.CanvasSize.Height, GridPaint1);
}
}
// rpint the legend
float x1 = 300;
float x2 = x1 + 120;
float x3 = x2 + 120;
float x4 = x3 + 120;
float x5 = x4 + 120;
float y1 = 30;
GridCanvas.DrawText(Legend1, x1, y1, GraphPaint1);
GridCanvas.DrawText(Legend2, x2, y1, GraphPaint2);
GridCanvas.DrawText(Legend3, x3, y1, GraphPaint3);
GridCanvas.DrawText(Legend4, x4, y1, GraphPaint4);
GridCanvas.DrawText(Legend5, x5, y1, GraphPaint5);
if (!AutoScale)
{
refresh = true;
}
}
private void GraphGrid_PaintSurface(object sender, SkiaSharp.Views.Desktop.SKPaintSurfaceEventArgs e)
{
GridSurface = e.Surface;
GridCanvas = GridSurface.Canvas;
GridCanvas.Clear(SKColors.Black);
if (GridYEnabled)
{
// draw y grid lines
pixelsPerUnitY = graphGrid.CanvasSize.Height / (GridYMax - GridYMin);
float stepSizeY = GridYStep;
for (float y = 0; y <= graphGrid.CanvasSize.Height; y += (stepSizeY * pixelsPerUnitY))
{
GridCanvas.DrawLine(0, y, graphGrid.CanvasSize.Width, y, GridPaint1);
}
}
if (GridXEnabled)
{
// draw x grid lines
float pixelsPerUnitX = graphGrid.CanvasSize.Width / (GridXMax - GridXMin);
float stepSizeX = GridXStep;
for (float x = 0; x <= graphGrid.CanvasSize.Width; x += (stepSizeX * pixelsPerUnitX))
{
GridCanvas.DrawLine(x, 0, x, graphGrid.CanvasSize.Height, GridPaint1);
}
}
if (!AutoScale)
{
refresh = true;
}
}
